configure.in 121 KB
Newer Older
1 2 3 4 5 6
dnl  Autoconf script for GNU Emacs
dnl To rebuild the `configure' script from this, execute the command
dnl 	autoconf
dnl in the directory containing this script.
dnl If you changed any AC_DEFINES, also run autoheader.
dnl
7
dnl Copyright (C) 1994-1996, 1999-2011  Free Software Foundation, Inc.
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
dnl
dnl  This file is part of GNU Emacs.
dnl
dnl  GNU Emacs is free software: you can redistribute it and/or modify
dnl  it under the terms of the GNU General Public License as published by
dnl  the Free Software Foundation, either version 3 of the License, or
dnl  (at your option) any later version.
dnl
dnl  GNU Emacs is distributed in the hope that it will be useful,
dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
dnl  GNU General Public License for more details.
dnl
dnl  You should have received a copy of the GNU General Public License
dnl  along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

AC_PREREQ(2.65)
AC_INIT(emacs, 24.0.50)
AC_CONFIG_HEADER(src/config.h:src/config.in)
AC_CONFIG_SRCDIR(src/lisp.h)
Paul Eggert's avatar
Paul Eggert committed
28
AM_INIT_AUTOMAKE
29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202

dnl Support for --program-prefix, --program-suffix and
dnl --program-transform-name options
AC_ARG_PROGRAM

dnl It is important that variables on the RHS not be expanded here,
dnl hence the single quotes.  This is per the GNU coding standards, see
dnl (autoconf) Installation Directory Variables
dnl See also epaths.h below.
lispdir='${datadir}/emacs/${version}/lisp'
locallisppath='${datadir}/emacs/${version}/site-lisp:'\
'${datadir}/emacs/site-lisp'
lisppath='${locallisppath}:${lispdir}:${datadir}/emacs/${version}/leim'
etcdir='${datadir}/emacs/${version}/etc'
archlibdir='${libexecdir}/emacs/${version}/${configuration}'
docdir='${datadir}/emacs/${version}/etc'
gamedir='${localstatedir}/games/emacs'

dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
dnl Create a new --with option that defaults to being disabled.
dnl NAME is the base name of the option.  The shell variable with_NAME
dnl   will be set to either the user's value (if the option is
dnl   specified; 'yes' for a plain --with-NAME) or to 'no' (if the
dnl   option is not specified).  Note that the shell variable name is
dnl   constructed as autoconf does, by replacing non-alphanumeric
dnl   characters with "_".
dnl HELP-STRING is the help text for the option.
AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
  AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
    m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
])dnl

dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
dnl Create a new --with option that defaults to being enabled.  NAME
dnl   is the base name of the option.  The shell variable with_NAME
dnl   will be set either to 'no' (for a plain --without-NAME) or to
dnl   'yes' (if the option is not specified).  Note that the shell
dnl   variable name is constructed as autoconf does, by replacing
dnl   non-alphanumeric characters with "_".
dnl HELP-STRING is the help text for the option.
AC_DEFUN([OPTION_DEFAULT_ON], [dnl
  AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
   m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=yes])dnl
])dnl

OPTION_DEFAULT_ON([pop],[don't support POP mail retrieval with movemail])
if test "$with_pop" = yes; then
   AC_DEFINE(MAIL_USE_POP)
fi
AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl

OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
if test "$with_kerberos" != no; then
   AC_DEFINE(KERBEROS)
fi
AH_TEMPLATE(KERBEROS,
	    [Define to support Kerberos-authenticated POP mail retrieval.])dnl

OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
if test "${with_kerberos5}" != no; then
  if test "${with_kerberos}" = no; then
    with_kerberos=yes
    AC_DEFINE(KERBEROS)
  fi
  AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
fi

OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
dnl FIXME hesiod support may not be present, so it seems like an error
dnl to define, or at least use, this unconditionally.
if test "$with_hesiod" != no; then
  AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
fi

OPTION_DEFAULT_OFF([mmdf],[support MMDF mailboxes])
if test "$with_mmdf" != no; then
   AC_DEFINE(MAIL_USE_MMDF, 1, [Define to support MMDF mailboxes in movemail.])
fi

OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
if test "$with_mail_unlink" != no; then
   AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
fi

AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
    [string giving default POP mail host])],
    AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))

OPTION_DEFAULT_ON([sound],[don't compile with sound support])

OPTION_DEFAULT_ON([sync-input],[process async input synchronously])
if test "$with_sync_input" = yes; then
   AC_DEFINE(SYNC_INPUT, 1, [Process async input synchronously.])
fi

dnl FIXME currently it is not the last.
dnl This should be the last --with option, because --with-x is
dnl added later on when we find the path of X, and it's best to
dnl keep them together visually.
AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
 [use an X toolkit (KIT one of: yes or gtk, gtk3, lucid or athena, motif, no)])],
[	  case "${withval}" in
	    y | ye | yes )	val=gtk ;;
	    n | no )		val=no  ;;
	    l | lu | luc | luci | lucid )	val=lucid ;;
	    a | at | ath | athe | athen | athena )	val=athena ;;
	    m | mo | mot | moti | motif )	val=motif ;;
	    g | gt | gtk  )	val=gtk ;;
	    gtk3  )	val=gtk3 ;;
	    * )
AC_MSG_ERROR([`--with-x-toolkit=$withval' is invalid;
this option's value should be `yes', `no', `lucid', `athena', `motif', `gtk' or
`gtk3'.  `yes' and `gtk' are synonyms. `athena' and `lucid' are synonyms.])
	    ;;
	  esac
	  with_x_toolkit=$val
])

dnl _ON results in a '--without' option in the --help output, so
dnl the help text should refer to "don't compile", etc.
OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])

OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])

OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
OPTION_DEFAULT_OFF([ns],[use nextstep (Cocoa or GNUstep) windowing system])

OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
OPTION_DEFAULT_ON([gconf],[don't compile with GConf support])
OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])

## For the times when you want to build Emacs but don't have
## a suitable makeinfo, and can live without the manuals.
dnl http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01844.html
OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])

## This is an option because I do not know if all info/man support
## compressed files, nor how to test if they do so.
OPTION_DEFAULT_ON([compress-info],[don't compress the installed Info pages])
if test $with_compress_info = yes; then
   GZIP_INFO=yes
else
   GZIP_INFO=
fi
AC_SUBST(GZIP_INFO)

AC_ARG_WITH([pkg-config-prog],dnl
[AS_HELP_STRING([--with-pkg-config-prog=PATH],
                  [path to pkg-config for finding GTK and librsvg])])
if test "X${with_pkg_config_prog}" != X; then
   if test "${with_pkg_config_prog}" != yes; then
      PKG_CONFIG="${with_pkg_config_prog}"
   fi
fi

CRT_DIR=
AC_ARG_WITH([crt-dir],dnl
[AS_HELP_STRING([--with-crt-dir=DIR],[directory containing crtn.o etc.
The default is /usr/lib, or /usr/lib64 on some platforms.])])
CRT_DIR="${with_crt_dir}"

203 204 205 206 207 208
AC_ARG_WITH(gameuser,dnl
[AS_HELP_STRING([--with-gameuser=USER],[user for shared game score files])])
test "X${with_gameuser}" != X && test "${with_gameuser}" != yes \
  && gameuser="${with_gameuser}"
test "X$gameuser" = X && gameuser=games

209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417
AC_ARG_WITH([gnustep-conf],dnl
[AS_HELP_STRING([--with-gnustep-conf=PATH],[path to GNUstep.conf; default $GNUSTEP_CONFIG_FILE, or /etc/GNUstep/GNUstep.conf])])
test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
  GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
test "X$GNUSTEP_CONFIG_FILE" = "X" && \
     GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf

AC_ARG_ENABLE(ns-self-contained,
[AS_HELP_STRING([--disable-ns-self-contained],
                [disable self contained build under NeXTstep])],
   EN_NS_SELF_CONTAINED=$enableval,
   EN_NS_SELF_CONTAINED=yes)

AC_ARG_ENABLE(asserts,
[AS_HELP_STRING([--enable-asserts], [compile code with asserts enabled])],
      USE_XASSERTS=$enableval,
      USE_XASSERTS=no)

AC_ARG_ENABLE(maintainer-mode,
[AS_HELP_STRING([--enable-maintainer-mode],
                [enable make rules and dependencies not useful (and sometimes
		 confusing) to the casual installer])],
      USE_MAINTAINER_MODE=$enableval,
      USE_MAINTAINER_MODE=no)
if test $USE_MAINTAINER_MODE = yes; then
  MAINT=
else
  MAINT=#
fi
AC_SUBST(MAINT)

AC_ARG_ENABLE(locallisppath,
[AS_HELP_STRING([--enable-locallisppath=PATH],
                [directories Emacs should search for lisp files specific
		 to this site])],
if test "${enableval}" = "no"; then
  locallisppath=
elif test "${enableval}" != "yes"; then
  locallisppath=${enableval}
fi)

AC_ARG_ENABLE(checking,
[AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
		[enable expensive run-time checks.  With LIST,
		 enable only specific categories of checks.
		 Categories are: all,yes,no.
		 Flags are: stringbytes, stringoverrun, stringfreelist,
		 xmallocoverrun, conslist])],
[ac_checking_flags="${enableval}"],[])
IFS="${IFS= 	}"; ac_save_IFS="$IFS"; IFS="$IFS,"
for check in $ac_checking_flags
do
	case $check in
	# these set all the flags to specific states
	yes)		ac_enable_checking=1 ;;
	no)		ac_enable_checking= ;
			ac_gc_check_stringbytes= ;
	                ac_gc_check_string_overrun= ;
	                ac_gc_check_string_free_list= ;
	                ac_xmalloc_overrun= ;
	                ac_gc_check_cons_list= ;;
	all)		ac_enable_checking=1 ;
			ac_gc_check_stringbytes=1 ;
	                ac_gc_check_string_overrun=1 ;
	                ac_gc_check_string_free_list=1 ;
	                ac_xmalloc_overrun=1 ;
	                ac_gc_check_cons_list=1 ;;
	# these enable particular checks
	stringbytes) 	ac_gc_check_stringbytes=1 ;;
	stringoverrun) 	ac_gc_check_string_overrun=1 ;;
	stringfreelist) ac_gc_check_string_free_list=1 ;;
	xmallocoverrun)	ac_xmalloc_overrun=1 ;;
	conslist)	ac_gc_check_cons_list=1 ;;
	*)	AC_MSG_ERROR(unknown check category $check) ;;
	esac
done
IFS="$ac_save_IFS"

if test x$ac_enable_checking != x ; then
  AC_DEFINE(ENABLE_CHECKING, 1,
[Enable expensive run-time checking of data types?])
fi
if test x$ac_gc_check_stringbytes != x ; then
  AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
[Define this temporarily to hunt a bug.  If defined, the size of
   strings is redundantly recorded in sdata structures so that it can
   be compared to the sizes recorded in Lisp strings.])
fi
if test x$ac_gc_check_stringoverrun != x ; then
  AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
[Define this to check for short string overrun.])
fi
if test x$ac_gc_check_string_free_list != x ; then
  AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
[Define this to check the string free list.])
fi
if test x$ac_xmalloc_overrun != x ; then
  AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
[Define this to check for malloc buffer overrun.])
fi
if test x$ac_gc_check_cons_list != x ; then
  AC_DEFINE(GC_CHECK_CONS_LIST, 1,
[Define this to check for errors in cons list.])
fi

AC_ARG_ENABLE(use-lisp-union-type,
[AS_HELP_STRING([--enable-use-lisp-union-type],
                [use a union for the Lisp_Object data type.
		This is only useful for development for catching certain types of bugs.])],
if test "${enableval}" != "no"; then
   AC_DEFINE(USE_LISP_UNION_TYPE, 1,
   [Define this to use a lisp union for the Lisp_Object data type.])
fi)


AC_ARG_ENABLE(profiling,
[AS_HELP_STRING([--enable-profiling],
		[build emacs with profiling support.
		 This might not work on all platforms])],
[ac_enable_profiling="${enableval}"],[])
if test x$ac_enable_profiling != x ; then
   PROFILING_CFLAGS="-DPROFILING=1 -pg"
else
   PROFILING_CFLAGS=
fi
AC_SUBST(PROFILING_CFLAGS)

AC_ARG_ENABLE(autodepend,
[AS_HELP_STRING([--enable-autodepend],
		[automatically generate dependencies to .h-files.
 		 Requires GNU Make and Gcc. Enabled if GNU Make and Gcc is
 		 found])],
[ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])

#### Make srcdir absolute, if it isn't already.  It's important to
#### avoid running the path through pwd unnecessarily, since pwd can
#### give you automounter prefixes, which can go away.  We do all this
#### so Emacs can find its files when run uninstalled.
## Make sure CDPATH doesn't affect cd (in case PWD is relative).
unset CDPATH
case "${srcdir}" in
  /* ) ;;
  . )
    ## We may be able to use the $PWD environment variable to make this
    ## absolute.  But sometimes PWD is inaccurate.
    ## Note: we used to use ${PWD} at the end instead of `pwd`,
    ## but that tested only for a well-formed and valid PWD,
    ## it did not object when PWD was well-formed and valid but just wrong.
    if test ".${PWD}" != "." && test ".`(cd ${PWD} ; sh -c pwd)`" = ".`pwd`"  ;
    then
      srcdir="$PWD"
    else
      srcdir="`(cd ${srcdir}; pwd)`"
    fi
  ;;
  *  ) srcdir="`(cd ${srcdir}; pwd)`" ;;
esac

#### Check if the source directory already has a configured system in it.
if test `pwd` != `(cd ${srcdir} && pwd)` \
   && test -f "${srcdir}/src/config.h" ; then
  AC_MSG_WARN([[The directory tree `${srcdir}' is being used
   as a build directory right now; it has been configured in its own
   right.  To configure in another directory as well, you MUST
   use GNU make.  If you do not have GNU make, then you must
   now do `make distclean' in ${srcdir},
   and then run $0 again.]])
fi

#### Given the configuration name, set machfile and opsysfile to the
#### names of the m/*.h and s/*.h files we should use.

### Canonicalize the configuration name.

AC_CANONICAL_HOST
canonical=$host
configuration=${host_alias-${build_alias-$host}}

dnl This used to use changequote, but, apart from `changequote is evil'
dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
dnl the great gob of text.  Thus it's not processed for possible expansion.
dnl Just make sure the brackets remain balanced.
dnl
dnl Since Emacs can't find matching pairs of quotes, boundaries are
dnl indicated by comments.
dnl quotation begins
[

### If you add support for a new configuration, add code to this
### switch statement to recognize your configuration name and select
### the appropriate operating system and machine description files.

### You would hope that you could choose an m/*.h file pretty much
### based on the machine portion of the configuration name, and an s/*.h
### file based on the operating system portion.  However, it turns out
### that each m/*.h file is pretty manufacturer-specific - for
### example mips.h is MIPS
### So we basically have to have a special case for each
### configuration name.
###
### As far as handling version numbers on operating systems is
### concerned, make sure things will fail in a fixable way.  If
### /etc/MACHINES doesn't say anything about version numbers, be
### prepared to handle anything reasonably.  If version numbers
### matter, be sure /etc/MACHINES says something about it.

machine='' opsys='' unported=no
case "${canonical}" in

418 419 420 421 422 423 424 425 426 427 428 429 430 431 432
  ## GNU/Linux ports
  *-*-linux-gnu*)
    opsys=gnu-linux
    case ${canonical} in
      alpha*)	machine=alpha ;;
      s390-*)	machine=ibms390 ;;
      s390x-*)	machine=ibms390x ;;
      powerpc*)	machine=macppc ;;
      sparc*)	machine=sparc ;;
      ia64*)	machine=ia64 ;;
      m68k*)	machine=m68k ;;
      x86_64*)	machine=amdx86-64 ;;
    esac
  ;;

433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508
  ## FreeBSD ports
  *-*-freebsd* )
    opsys=freebsd
    case "${canonical}" in
      alpha*)           machine=alpha ;;
      amd64-*|x86_64-*) machine=amdx86-64 ;;
      ia64-*)           machine=ia64 ;;
      i[3456]86-*)      machine=intel386 ;;
      powerpc-*)        machine=macppc ;;
      sparc-*)          machine=sparc ;;
      sparc64-*)        machine=sparc ;;
    esac
  ;;

  ## FreeBSD kernel + glibc based userland
  *-*-kfreebsd*gnu* )
    opsys=gnu-kfreebsd
    case "${canonical}" in
      alpha*)           machine=alpha ;;
      amd64-*|x86_64-*) machine=amdx86-64 ;;
      ia64-*)           machine=ia64 ;;
      i[3456]86-*)      machine=intel386 ;;
      powerpc-*)        machine=macppc ;;
      sparc-*)          machine=sparc ;;
      sparc64-*)        machine=sparc ;;
    esac
  ;;

  ## NetBSD ports
  *-*-netbsd* )
    opsys=netbsd
    case "${canonical}" in
      alpha*)      machine=alpha ;;
      x86_64-*)    machine=amdx86-64 ;;
      i[3456]86-*) machine=intel386 ;;
      m68k-*)      machine=m68k ;;
      powerpc-*)   machine=macppc ;;
      sparc*-)     machine=sparc ;;
      vax-*)       machine=vax ;;
    esac
  ;;

  ## OpenBSD ports
  *-*-openbsd* )
    opsys=openbsd
    case "${canonical}" in
      alpha*)    machine=alpha ;;
      x86_64-*)  machine=amdx86-64 ;;
      i386-*)    machine=intel386 ;;
      powerpc-*) machine=macppc ;;
      sparc*)    machine=sparc ;;
      vax-*)     machine=vax ;;
    esac
  ;;

  ## Apple Darwin / Mac OS X
  *-apple-darwin* )
    case "${canonical}" in
      i[3456]86-* )  machine=intel386 ;;
      powerpc-* )    machine=macppc ;;
      x86_64-* )     machine=amdx86-64 ;;
      * )            unported=yes ;;
    esac
    opsys=darwin
    # Define CPP as follows to make autoconf work correctly.
    CPP="${CC-cc} -E -no-cpp-precomp"
    # Use fink packages if available.
    if test -d /sw/include && test -d /sw/lib; then
      GCC_TEST_OPTIONS="-I/sw/include -L/sw/lib"
      CPP="${CPP} ${GCC_TEST_OPTIONS}"
      NON_GCC_TEST_OPTIONS=${GCC_TEST_OPTIONS}
    fi
  ;;

  ## HP 9000 series 700 and 800, running HP/UX
  hppa*-hp-hpux10.2* )
509
    opsys=hpux10-20
510 511
  ;;
  hppa*-hp-hpux1[1-9]* )
512
    opsys=hpux11
513 514 515
    CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
  ;;

516 517
  ia64*-hp-hpux1[1-9]* )
    machine=hp800 opsys=hpux11
518 519
    ## FIXME.  Peter O'Gorman reports that dumping using unexelf.o doesn't
    ## work either: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=6811
Paul Eggert's avatar
Paul Eggert committed
520
    CANNOT_DUMP=yes
521 522
  ;;

523 524 525 526
  hppa*-*-linux-gnu* )
    machine=hp800 opsys=gnu-linux
  ;;

527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634
  ## IBM machines
  rs6000-ibm-aix4.[23]* )
    machine=ibmrs6000 opsys=aix4-2
  ;;
  powerpc-ibm-aix4.[23]*  )
    machine=ibmrs6000 opsys=aix4-2
  ;;
  rs6000-ibm-aix[56]* )
    machine=ibmrs6000 opsys=aix4-2
  ;;
  powerpc-ibm-aix[56]*  )
    machine=ibmrs6000 opsys=aix4-2
  ;;

  ## Silicon Graphics machines
  ## Iris 4D
  mips-sgi-irix6.5 )
    machine=iris4d opsys=irix6-5
    # Without defining _LANGUAGE_C, things get masked out in the headers
    # so that, for instance, grepping for `free' in stdlib.h fails and
    # AC_HEADER_STD_C fails.   (MIPSPro 7.2.1.2m compilers, Irix 6.5.3m).
    NON_GNU_CPP="/lib/cpp -D_LANGUAGE_C"
    NON_GCC_TEST_OPTIONS="-D_LANGUAGE_C"
  ;;

  ## Suns
  *-sun-solaris* \
    | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
    | x86_64-*-solaris2*    | x86_64-*-sunos5*)
    case "${canonical}" in
      i[3456]86-*-* )     machine=intel386 ;;
      amd64-*-*|x86_64-*-*)	machine=amdx86-64 ;;
      sparc* )		machine=sparc ;;
      * )		unported=yes ;;
    esac
    case "${canonical}" in
      *-sunos5.6* | *-solaris2.6* )
		opsys=sol2-6
		NON_GNU_CPP=/usr/ccs/lib/cpp
		RANLIB="ar -ts"
		;;
      *-sunos5.[7-9]* | *-solaris2.[7-9]* )
		opsys=sol2-6
		emacs_check_sunpro_c=yes
		NON_GNU_CPP=/usr/ccs/lib/cpp
		;;
      *-sunos5* | *-solaris* )
		opsys=sol2-10
		emacs_check_sunpro_c=yes
		NON_GNU_CPP=/usr/ccs/lib/cpp
		;;
    esac
    ## Watch out for a compiler that we know will not work.
    case "${canonical}" in
     *-solaris* | *-sunos5* )
		if [ "x$CC" = x/usr/ucb/cc ]; then
		  ## /usr/ucb/cc doesn't work;
		  ## we should find some other compiler that does work.
		  unset CC
		fi
		;;
      *) ;;
    esac
  ;;

  ## Intel 386 machines where we don't care about the manufacturer.
  i[3456]86-*-* )
    machine=intel386
    case "${canonical}" in
      *-cygwin )                opsys=cygwin ;;
      *-darwin* )               opsys=darwin
                                CPP="${CC-cc} -E -no-cpp-precomp"
 				;;
      *-sysv4.2uw* )	  	opsys=unixware; NON_GNU_CPP=/lib/cpp ;;
      *-sysv5uw* )	  	opsys=unixware; NON_GNU_CPP=/lib/cpp ;;
      *-sysv5OpenUNIX* )  	opsys=unixware; NON_GNU_CPP=/lib/cpp ;;
      ## Otherwise, we'll fall through to the generic opsys code at the bottom.
    esac
  ;;

  * )
    unported=yes
  ;;
esac

### If the code above didn't choose an operating system, just choose
### an operating system based on the configuration name.  You really
### only want to use this when you have no idea what the right
### operating system is; if you know what operating systems a machine
### runs, it's cleaner to make it explicit in the case statement
### above.
if test x"${opsys}" = x; then
  case "${canonical}" in
    *-gnu* )				opsys=gnu ;;
    * )
      unported=yes
    ;;
  esac
fi

]
dnl quotation ends

if test $unported = yes; then
  AC_MSG_ERROR([Emacs hasn't been ported to `${canonical}' systems.
Check `etc/MACHINES' for recognized configuration names.])
fi

635 636 637 638 639
if test -n "$machine"; then
  machfile="m/${machine}.h"
else
  machfile=
fi
640 641 642 643 644 645 646 647 648 649 650
opsysfile="s/${opsys}.h"


#### Choose a compiler.
test -n "$CC" && cc_specified=yes

# Save the value of CFLAGS that the user specified.
SPECIFIED_CFLAGS="$CFLAGS"

dnl Sets GCC=yes if using gcc.
AC_PROG_CC
Paul Eggert's avatar
Paul Eggert committed
651 652 653 654
AM_PROG_CC_C_O

# Initialize gnulib right after verifying that the C compiler works.
gl_EARLY
655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791

# On Suns, sometimes $CPP names a directory.
if test -n "$CPP" && test -d "$CPP"; then
  CPP=
fi

## If not using gcc, and on Solaris, and no CPP specified, see if
## using a Sun compiler, which needs -Xs to prevent whitespace.
if test x"$GCC" != xyes && test x"$emacs_check_sunpro_c" = xyes && \
 test x"$CPP" = x; then
  AC_MSG_CHECKING([whether we are using a Sun C compiler])
  AC_CACHE_VAL(emacs_cv_sunpro_c,
  [AC_TRY_LINK([],
[#ifndef __SUNPRO_C
fail;
#endif
], emacs_cv_sunpro_c=yes, emacs_cv_sunpro_c=no)])
  AC_MSG_RESULT($emacs_cv_sunpro_c)

  if test x"$emacs_cv_sunpro_c" = xyes; then
    NON_GNU_CPP="$CC -E -Xs"
  fi
fi

#### Some systems specify a CPP to use unless we are using GCC.
#### Now that we know whether we are using GCC, we can decide whether
#### to use that one.
if test "x$NON_GNU_CPP" != x && test x$GCC != xyes && test "x$CPP" = x
then
  CPP="$NON_GNU_CPP"
fi

#### Some systems specify a CC to use unless we are using GCC.
#### Now that we know whether we are using GCC, we can decide whether
#### to use that one.
if test "x$NON_GNU_CC" != x && test x$GCC != xyes &&
  test x$cc_specified != xyes
then
  CC="$NON_GNU_CC"
fi

if test x$GCC = xyes; then
  test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
else
  test "x$NON_GCC_TEST_OPTIONS" != x && CC="$CC $NON_GCC_TEST_OPTIONS"
fi

### Use -Wdeclaration-after-statement if the compiler supports it
AC_MSG_CHECKING([whether gcc understands -Wdeclaration-after-statement])
SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wdeclaration-after-statement"
AC_TRY_COMPILE([], [], has_option=yes, has_option=no,)
if test $has_option = yes; then
   C_WARNINGS_SWITCH="-Wdeclaration-after-statement $C_WARNINGS_SWITCH"
fi
AC_MSG_RESULT($has_option)
CFLAGS="$SAVE_CFLAGS"
unset has_option
unset SAVE_CFLAGS

### Use -Wold-style-definition if the compiler supports it
# This can be removed when conversion to standard C is finished.
AC_MSG_CHECKING([whether gcc understands -Wold-style-definition])
SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wold-style-definition"
AC_TRY_COMPILE([], [], has_option=yes, has_option=no,)
if test $has_option = yes; then
   C_WARNINGS_SWITCH="-Wold-style-definition $C_WARNINGS_SWITCH"
fi
AC_MSG_RESULT($has_option)
CFLAGS="$SAVE_CFLAGS"
unset has_option
unset SAVE_CFLAGS

### Use -Wimplicit-function-declaration if the compiler supports it
AC_MSG_CHECKING([whether gcc understands -Wimplicit-function-declaration])
SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wimplicit-function-declaration"
AC_TRY_COMPILE([], [], has_option=yes, has_option=no,)
if test $has_option = yes; then
   C_WARNINGS_SWITCH="-Wimplicit-function-declaration $C_WARNINGS_SWITCH"
fi
AC_MSG_RESULT($has_option)
CFLAGS="$SAVE_CFLAGS"
unset has_option
unset SAVE_CFLAGS

AC_SUBST(C_WARNINGS_SWITCH)


#### Some other nice autoconf tests.

dnl checks for programs
AC_PROG_CPP
AC_PROG_INSTALL
if test "x$RANLIB" = x; then
  AC_PROG_RANLIB
fi

## Although we're running on an amd64 kernel, we're actually compiling for
## the x86 architecture.  The user should probably have provided an
## explicit --build to `configure', but if everything else than the kernel
## is running in i386 mode, we can help them out.
if test "$machine" = "amdx86-64"; then
  AC_CHECK_DECL([i386])
  if test "$ac_cv_have_decl_i386" = "yes"; then
    canonical=`echo "$canonical" | sed -e 's/^amd64/i386/' -e 's/^x86_64/i386/'`
    machine=intel386
    machfile="m/${machine}.h"
  fi
fi

AC_PATH_PROG(INSTALL_INFO, install-info)
AC_PATH_PROG(INSTALL_INFO, install-info,, /usr/sbin)
AC_PATH_PROG(INSTALL_INFO, install-info,:, /sbin)
dnl Don't use GZIP, which is used by gzip for additional parameters.
AC_PATH_PROG(GZIP_PROG, gzip)


## Need makeinfo >= 4.6 (?) to build the manuals.
AC_PATH_PROG(MAKEINFO, makeinfo, no)
dnl By this stage, configure has already checked for egrep and set EGREP,
dnl or exited with an error if no egrep was found.
if test "$MAKEINFO" != "no" && \
  test x"`$MAKEINFO --version 2> /dev/null | $EGREP 'texinfo[[^0-9]]*([[1-4]][[0-9]]+|[[5-9]]|4\.[[6-9]]|4\.[[1-5]][[0-9]]+)'`" = x; then
   MAKEINFO=no
fi

## Makeinfo is unusual.  For a released Emacs, the manuals are
## pre-built, and not deleted by the normal clean rules.  makeinfo is
## therefore in the category of "special tools" not normally required, which
## configure does not have to check for (eg autoconf itself).
## In a Bazaar checkout on the other hand, the manuals are not included.
## So makeinfo is a requirement to build from Bazaar, and configure
## should test for it as it does for any other build requirement.
## We use the presence of $srcdir/info/emacs to distinguish a release,
## with pre-built manuals, from a Bazaar checkout.
792 793
HAVE_MAKEINFO=yes

794
if test "$MAKEINFO" = "no"; then
795
  MAKEINFO=makeinfo
796
  if test "x${with_makeinfo}" = "xno"; then
797
    HAVE_MAKEINFO=no
798 799 800 801 802 803 804
  elif test ! -e $srcdir/info/emacs; then
    AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.6, and your
source tree does not seem to have pre-built manuals in the `info' directory.
Either install a suitable version of makeinfo, or re-run configure
with the `--without-makeinfo' option to build without the manuals.] )
  fi
fi
805
AC_SUBST(HAVE_MAKEINFO)
806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843

dnl Add our options to ac_link now, after it is set up.

if test x$GCC = xyes; then
  test "x$GCC_LINK_TEST_OPTIONS" != x && \
    ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
else
  test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
    ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
fi

dnl We need -znocombreloc if we're using a relatively recent GNU ld.
dnl If we can link with the flag, it shouldn't do any harm anyhow.
dnl (Don't use `-z nocombreloc' as -z takes no arg on Irix.)
dnl Treat GCC specially since it just gives a non-fatal `unrecognized option'
dnl if not built to support GNU ld.

late_LDFLAGS=$LDFLAGS
if test x$GCC = xyes; then
  LDFLAGS="$LDFLAGS -Wl,-znocombreloc"
else
  LDFLAGS="$LDFLAGS -znocombreloc"
fi

AC_MSG_CHECKING([for -znocombreloc])
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
  [AC_MSG_RESULT(yes)],
  LDFLAGS=$late_LDFLAGS
  [AC_MSG_RESULT(no)])


# The value of CPP is a quoted variable reference, so we need to do this
# to get its actual value...
CPP=`eval "echo $CPP"`


dnl The function dump-emacs will not be defined and temacs will do
dnl (load "loadup") automatically unless told otherwise.
844
test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
845
case "$opsys" in
846
  your-opsys-here) CANNOT_DUMP=yes ;;
847
esac
848 849 850 851

test "$CANNOT_DUMP" = "yes" && \
  AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])

852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875
AC_SUBST(CANNOT_DUMP)


UNEXEC_OBJ=unexelf.o
case "$opsys" in
  # MSDOS uses unexcoff.o
  # MSWindows uses unexw32.o
  aix4-2)
   UNEXEC_OBJ=unexaix.o
   ;;
  cygwin)
   UNEXEC_OBJ=unexcw.o
   ;;
  darwin)
   UNEXEC_OBJ=unexmacosx.o
   ;;
  hpux10-20 | hpux11)
   UNEXEC_OBJ=unexhp9k800.o
   ;;
  sol2-10)
   # Use the Solaris dldump() function, called from unexsol.c, to dump
   # emacs, instead of the generic ELF dump code found in unexelf.c.
   # The resulting binary has a complete symbol table, and is better
   # for debugging and other observability tools (debuggers, pstack, etc).
Paul Eggert's avatar
Paul Eggert committed
876
   #
877 878 879
   # If you encounter a problem using dldump(), please consider sending
   # a message to the OpenSolaris tools-linking mailing list:
   #      http://mail.opensolaris.org/mailman/listinfo/tools-linking
Paul Eggert's avatar
Paul Eggert committed
880
   #
881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897
   # It is likely that dldump() works with older Solaris too, but this has
   # not been tested, so for now this change is for Solaris 10 or newer.
   UNEXEC_OBJ=unexsol.o
   ;;
esac

LD_SWITCH_SYSTEM=
case "$opsys" in
  freebsd)
   ## Let `ld' find image libs and similar things in /usr/local/lib.
   ## The system compiler, GCC, has apparently been modified to not
   ## look there, contrary to what a stock GCC would do.
   LD_SWITCH_SYSTEM=-L/usr/local/lib
   ;;

  gnu-linux)
   ## cpp test was "ifdef __mips__", but presumably this is equivalent...
898
   case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946
   ;;

  netbsd)
   LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
   ;;

  openbsd)
   ## Han Boetes <han@mijncomputer.nl> says this is necessary,
   ## otherwise Emacs dumps core on elf systems.
   LD_SWITCH_SYSTEM="-Z"
   ;;
esac
AC_SUBST(LD_SWITCH_SYSTEM)

ac_link="$ac_link $LD_SWITCH_SYSTEM"

## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_AUX,
## which has not been defined yet.  When this was handled with cpp,
## it was expanded to null when configure sourced the s/*.h file.
## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
## (or somesuch), but because it is supposed to go at the _front_
## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
## Compare with the gnu-linux case below, which added to the end
## of LD_SWITCH_SYSTEM, and so can instead go at the front of
## LD_SWITCH_SYSTEM_TEMACS.
case "$opsys" in
  netbsd|openbsd)
   ## _AUX_RPATH is like _AUX, but uses -rpath instead of -R.
   LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_AUX_RPATH) $LD_SWITCH_SYSTEM" ;;
esac


C_SWITCH_MACHINE=
if test "$machine" = "alpha"; then
  AC_CHECK_DECL([__ELF__])
  if test "$ac_cv_have_decl___ELF__" = "yes"; then
    ## With ELF, make sure that all common symbols get allocated to in the
    ## data section.  Otherwise, the dump of temacs may miss variables in
    ## the shared library that have been initialized.  For example, with
    ## GNU libc, __malloc_initialized would normally be resolved to the
    ## shared library's .bss section, which is fatal.
    if test "x$GCC" = "xyes"; then
      C_SWITCH_MACHINE="-fno-common"
    else
      AC_MSG_ERROR([What gives?  Fix me if DEC Unix supports ELF now.])
    fi
  else
Paul Eggert's avatar
Paul Eggert committed
947
    UNEXEC_OBJ=unexalpha.o
948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973
  fi
fi
AC_SUBST(C_SWITCH_MACHINE)

AC_SUBST(UNEXEC_OBJ)

C_SWITCH_SYSTEM=
## Some programs in src produce warnings saying certain subprograms
## are too complex and need a MAXMEM value greater than 2000 for
## additional optimization.  --nils@exp-math.uni-essen.de
test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
  C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
## It is redundant in glibc2, since we define _GNU_SOURCE.
AC_SUBST(C_SWITCH_SYSTEM)


LIBS_SYSTEM=
case "$opsys" in
  ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
  aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;

  freebsd) LIBS_SYSTEM="-lutil" ;;

  hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;

974
  sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125

  ## Motif needs -lgen.
  unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
esac
AC_SUBST(LIBS_SYSTEM)


### Make sure subsequent tests use flags consistent with the build flags.

if test x"${OVERRIDE_CPPFLAGS}" != x; then
  CPPFLAGS="${OVERRIDE_CPPFLAGS}"
else
  CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
fi

dnl Do this early because it can frob feature test macros for Unix-98 &c.
AC_SYS_LARGEFILE


## If user specified a crt-dir, use that unconditionally.
if test "X$CRT_DIR" = "X"; then

  case "$canonical" in
    x86_64-*-linux-gnu* | s390x-*-linux-gnu*)
    ## On x86-64 and s390x GNU/Linux distributions, the standard library
    ## can be in a variety of places.  We only try /usr/lib64 and /usr/lib.
    ## For anything else (eg /usr/lib32), it is up the user to specify
    ## the location (bug#5655).
    ## Test for crtn.o, not just the directory, because sometimes the
    ## directory exists but does not have the relevant files (bug#1287).
    ## FIXME better to test for binary compatibility somehow.
    test -e /usr/lib64/crtn.o && CRT_DIR=/usr/lib64
    ;;

    powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*) CRT_DIR=/usr/lib64 ;;
  esac

  case "$opsys" in
    hpux10-20) CRT_DIR=/lib ;;
  esac

  ## Default is /usr/lib.
  test "X$CRT_DIR" = "X" && CRT_DIR=/usr/lib

else

  ## Some platforms don't use any of these files, so it is not
  ## appropriate to put this test outside the if block.
  test -e $CRT_DIR/crtn.o || test -e $CRT_DIR/crt0.o || \
    AC_MSG_ERROR([crt*.o not found in specified location.])

fi

AC_SUBST(CRT_DIR)

LIB_MATH=-lm
LIB_STANDARD=
START_FILES=

case $opsys in
  cygwin )
    LIB_MATH=
    START_FILES='pre-crt0.o'
    ;;
  darwin )
    ## Adding -lm confuses the dynamic linker, so omit it.
    LIB_MATH=
    START_FILES='pre-crt0.o'
    ;;
  freebsd )
    LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o $(CRT_DIR)/crtn.o'
    START_FILES='pre-crt0.o $(CRT_DIR)/crt1.o $(CRT_DIR)/crti.o $(CRT_DIR)/crtbegin.o'
    ;;
  gnu-linux | gnu-kfreebsd )
    LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtn.o'
    START_FILES='pre-crt0.o $(CRT_DIR)/crt1.o $(CRT_DIR)/crti.o'
    ;;
  hpux10-20 | hpux11 )
    LIB_STANDARD=-lc
    START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o'
    ;;
  netbsd | openbsd )
    if test -f $CRT_DIR/crti.o; then
	LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o $(CRT_DIR)/crtn.o'
        START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o $(CRT_DIR)/crti.o $(CRT_DIR)/crtbegin.o'
    else
	LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o'
	START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o $(CRT_DIR)/crtbegin.o'
    fi
    ;;
esac

AC_SUBST(LIB_MATH)
AC_SUBST(START_FILES)

dnl This function definition taken from Gnome 2.0
dnl PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4, action-if, action-not)
dnl defines GSTUFF_LIBS, GSTUFF_CFLAGS, see pkg-config man page
dnl also defines GSTUFF_PKG_ERRORS on error
AC_DEFUN([PKG_CHECK_MODULES], [
  succeeded=no

  AC_PATH_PROG(PKG_CONFIG, pkg-config, no)

  if test "$PKG_CONFIG" = "no" ; then
     ifelse([$4], , [AC_MSG_ERROR([
      *** The pkg-config script could not be found. Make sure it is in your path, or give the full path to pkg-config with the PKG_CONFIG environment variable or --with-pkg-config-prog.  Or see http://www.freedesktop.org/software/pkgconfig to get pkg-config.])], [$4])
  else
     PKG_CONFIG_MIN_VERSION=0.9.0
     if $PKG_CONFIG --atleast-pkgconfig-version $PKG_CONFIG_MIN_VERSION; then
        AC_MSG_CHECKING(for $2)

        if $PKG_CONFIG --exists "$2" 2>&AS_MESSAGE_LOG_FD; then
            AC_MSG_RESULT(yes)
            succeeded=yes

            AC_MSG_CHECKING($1_CFLAGS)
            $1_CFLAGS=`$PKG_CONFIG --cflags "$2"|sed -e 's,///*,/,g'`
            AC_MSG_RESULT($$1_CFLAGS)

            AC_MSG_CHECKING($1_LIBS)
            $1_LIBS=`$PKG_CONFIG --libs "$2"|sed -e 's,///*,/,g'`
            AC_MSG_RESULT($$1_LIBS)
        else
            AC_MSG_RESULT(no)
            $1_CFLAGS=""
            $1_LIBS=""
            ## If we have a custom action on failure, don't print errors, but
            ## do set a variable so people can do so.
            $1_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
            ifelse([$4], ,echo $$1_PKG_ERRORS,)
        fi

        AC_SUBST($1_CFLAGS)
        AC_SUBST($1_LIBS)
     else
        echo "*** Your version of pkg-config is too old. You need version $PKG_CONFIG_MIN_VERSION or newer."
        echo "*** See http://www.freedesktop.org/software/pkgconfig"
     fi
  fi

  if test $succeeded = yes; then
     ifelse([$3], , :, [$3])
  else
     ifelse([$4], , [AC_MSG_ERROR([Library requirements ($2) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.])], [$4])
  fi
])


if test "${with_sound}" != "no"; then
  # Sound support for GNU/Linux and the free BSDs.
Paul Eggert's avatar
Paul Eggert committed
1126
  AC_CHECK_HEADERS(machine/soundcard.h sys/soundcard.h soundcard.h,
1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318
    have_sound_header=yes)
  # Emulation library used on NetBSD.
  AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
  AC_SUBST(LIBSOUND)

  ALSA_REQUIRED=1.0.0
  ALSA_MODULES="alsa >= $ALSA_REQUIRED"
  PKG_CHECK_MODULES(ALSA, $ALSA_MODULES, HAVE_ALSA=yes, HAVE_ALSA=no)
  if test $HAVE_ALSA = yes; then
    SAVE_CFLAGS="$CFLAGS"
    SAVE_LDFLAGS="$LDFLAGS"
    CFLAGS="$ALSA_CFLAGS $CFLAGS"
    LDFLAGS="$ALSA_LIBS $LDFLAGS"
    AC_TRY_COMPILE([#include <asoundlib.h>], [snd_lib_error_set_handler (0);],
                    emacs_alsa_normal=yes,
	            emacs_alsa_normal=no)
    if test "$emacs_alsa_normal" != yes; then
      AC_TRY_COMPILE([#include <alsa/asoundlib.h>],
                     [snd_lib_error_set_handler (0);],
                     emacs_alsa_subdir=yes,
	             emacs_alsa_subdir=no)
      if test "$emacs_alsa_subdir" != yes; then
        AC_MSG_ERROR([pkg-config found alsa, but it does not compile.  See config.log for error messages.])
      fi
      ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
    fi

    CFLAGS="$SAVE_CFLAGS"
    LDFLAGS="$SAVE_LDFLAGS"
    LIBSOUND="$LIBSOUND $ALSA_LIBS"
    CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
    AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
  fi

  dnl Define HAVE_SOUND if we have sound support.  We know it works and
  dnl compiles only on the specified platforms.  For others, it
  dnl probably doesn't make sense to try.
  if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
     case "$opsys" in
       dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
       gnu-linux|freebsd|netbsd)
         AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
         ;;
     esac
  fi

  AC_SUBST(CFLAGS_SOUND)
fi

dnl checks for header files
AC_CHECK_HEADERS(sys/select.h sys/time.h unistd.h utime.h \
  linux/version.h sys/systeminfo.h limits.h \
  stdio_ext.h fcntl.h coff.h pty.h sys/mman.h \
  sys/vlimit.h sys/resource.h locale.h sys/_mbstate_t.h \
  sys/utsname.h pwd.h utmp.h dirent.h util.h)

AC_MSG_CHECKING(if personality LINUX32 can be set)
AC_TRY_COMPILE([#include <sys/personality.h>], [personality (PER_LINUX32)],
               emacs_cv_personality_linux32=yes,
	       emacs_cv_personality_linux32=no)
AC_MSG_RESULT($emacs_cv_personality_linux32)

if test $emacs_cv_personality_linux32 = yes; then
  AC_DEFINE(HAVE_PERSONALITY_LINUX32, 1,
            [Define to 1 if personality LINUX32 can be set.])
fi

dnl On Solaris 8 there's a compilation warning for term.h because
dnl it doesn't define `bool'.
AC_CHECK_HEADERS(term.h, , , -)
AC_HEADER_STDC
AC_HEADER_TIME
AC_CHECK_DECLS([sys_siglist])
if test $ac_cv_have_decl_sys_siglist != yes; then
  # For Tru64, at least:
  AC_CHECK_DECLS([__sys_siglist])
  if test $ac_cv_have_decl___sys_siglist = yes; then
    AC_DEFINE(sys_siglist, __sys_siglist,
              [Define to any substitute for sys_siglist.])
  fi
fi
AC_HEADER_SYS_WAIT

dnl Some systems have utime.h but don't declare the struct anyplace.
AC_CACHE_CHECK(for struct utimbuf, emacs_cv_struct_utimbuf,
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTIME_H
#include <utime.h>
#endif], [static struct utimbuf x; x.actime = x.modtime;],
  emacs_cv_struct_utimbuf=yes, emacs_cv_struct_utimbuf=no))
if test $emacs_cv_struct_utimbuf = yes; then
  AC_DEFINE(HAVE_STRUCT_UTIMBUF, 1, [Define to 1 if `struct utimbuf' is declared by <utime.h>.])
fi

dnl checks for typedefs
AC_TYPE_SIGNAL

dnl Check for speed_t typedef.
AC_CACHE_CHECK(for speed_t, emacs_cv_speed_t,
  [AC_TRY_COMPILE([#include <termios.h>], [speed_t x = 1;],
    emacs_cv_speed_t=yes, emacs_cv_speed_t=no)])
if test $emacs_cv_speed_t = yes; then
  AC_DEFINE(HAVE_SPEED_T, 1,
  	   [Define to 1 if `speed_t' is declared by <termios.h>.])
fi

AC_CACHE_CHECK(for struct timeval, emacs_cv_struct_timeval,
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif], [static struct timeval x; x.tv_sec = x.tv_usec;],
  emacs_cv_struct_timeval=yes, emacs_cv_struct_timeval=no))
HAVE_TIMEVAL=$emacs_cv_struct_timeval
if test $emacs_cv_struct_timeval = yes; then
  AC_DEFINE(HAVE_TIMEVAL, 1, [Define to 1 if `struct timeval' is declared by <sys/time.h>.])
fi

AC_CACHE_CHECK(for struct exception, emacs_cv_struct_exception,
AC_TRY_COMPILE([#include <math.h>],
[static struct exception x; x.arg1 = x.arg2 = x.retval; x.name = ""; x.type = 1;],
  emacs_cv_struct_exception=yes, emacs_cv_struct_exception=no))
HAVE_EXCEPTION=$emacs_cv_struct_exception
if test $emacs_cv_struct_exception != yes; then
  AC_DEFINE(NO_MATHERR, 1, [Define to 1 if you don't have struct exception in math.h.])
fi

AC_CHECK_HEADERS(sys/socket.h)
AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif])

dnl checks for structure members
AC_STRUCT_TM
AC_STRUCT_TIMEZONE
AC_CHECK_MEMBER(struct tm.tm_gmtoff,
		[AC_DEFINE(HAVE_TM_GMTOFF, 1,
			   [Define to 1 if `tm_gmtoff' is member of `struct tm'.])],,
		[#include <time.h>])
AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
		  struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
		  struct ifreq.ifr_addr], , ,
		 [AC_INCLUDES_DEFAULT
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#if HAVE_NET_IF_H
#include <net/if.h>
#endif])

dnl checks for compiler characteristics

dnl Testing __STDC__ to determine prototype support isn't good enough.
dnl DEC C, for instance, doesn't define it with default options, and
dnl is used on 64-bit systems (OSF Alphas).  Similarly for volatile
dnl and void *.
AC_C_PROTOTYPES
AC_C_VOLATILE
AC_C_CONST
dnl This isn't useful because we can't turn on use of `inline' unless
dnl the compiler groks `extern inline'.
dnl AC_C_INLINE
AC_CACHE_CHECK([for void * support], emacs_cv_void_star,
  [AC_TRY_COMPILE(, [void * foo;],
                   emacs_cv_void_star=yes, emacs_cv_void_star=no)])
if test $emacs_cv_void_star = yes; then
  AC_DEFINE(POINTER_TYPE, void)
else
  AC_DEFINE(POINTER_TYPE, char)
fi
AH_TEMPLATE(POINTER_TYPE,
	    [Define as `void' if your compiler accepts `void *'; otherwise
	     define as `char'.])dnl

dnl Check for endianess
AC_C_BIGENDIAN

1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331
AC_CACHE_CHECK([for  __attribute__ ((__aligned__ (expr)))],
  [emacs_cv_attribute_aligned],
  [AC_COMPILE_IFELSE(
     [AC_LANG_PROGRAM(
	[[char __attribute__ ((__aligned__ (1 << 3))) c;]],
	[[]])],
     [emacs_cv_attribute_aligned=yes],
     [emacs_cv_attribute_aligned=no])])
if test $emacs_cv_attribute_aligned = yes; then
  AC_DEFINE([HAVE_ATTRIBUTE_ALIGNED], 1,
    [Define to 1 if GCC-style __attribute__ ((__aligned__ (expr))) works.])
fi

1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505
dnl check for Make feature
AC_PROG_MAKE_SET

DEPFLAGS=
MKDEPDIR=":"
deps_frag=deps.mk
dnl check for GNU Make if we have GCC and autodepend is on.
if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
   AC_MSG_CHECKING([whether we are using GNU Make])
   HAVE_GNU_MAKE=no
   testval=`make --version 2>/dev/null | grep 'GNU Make'`
   if test "x$testval" != x; then
      HAVE_GNU_MAKE=yes
   else
      ac_enable_autodepend=no
   fi
   AC_MSG_RESULT([$HAVE_GNU_MAKE])
   if test $HAVE_GNU_MAKE = yes; then
      AC_MSG_CHECKING([whether gcc understands -MMD -MF])
      SAVE_CFLAGS="$CFLAGS"
      CFLAGS="$CFLAGS -MMD -MF deps.d"
      AC_TRY_COMPILE([], [], , ac_enable_autodepend=no)
      CFLAGS="$SAVE_CFLAGS"
      test -f deps.d || ac_enable_autodepend=no
      rm -rf deps.d
      AC_MSG_RESULT([$ac_enable_autodepend])
   fi
   if test $ac_enable_autodepend = yes; then
      DEPFLAGS='-MMD -MF ${DEPDIR}/$*.d'
      ## In parallel builds, another make might create depdir between
      ## the first test and mkdir, so stick another test on the end.
      ## Or use mkinstalldirs?  mkdir -p is not portable.
      MKDEPDIR='test -d ${DEPDIR} || mkdir ${DEPDIR} || test -d ${DEPDIR}'
      deps_frag=autodeps.mk
   fi
fi
deps_frag=$srcdir/src/$deps_frag
AC_SUBST(MKDEPDIR)
AC_SUBST(DEPFLAGS)
AC_SUBST_FILE(deps_frag)


dnl checks for operating system services
AC_SYS_LONG_FILE_NAMES

#### Choose a window system.

AC_PATH_X
if test "$no_x" = yes; then
  window_system=none
else
  window_system=x11
fi

## Workaround for bug in autoconf <= 2.62.
## http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01551.html
## No need to do anything special for these standard directories.
if test -n "${x_libraries}" && test x"${x_libraries}" != xNONE; then

   x_libraries=`echo :${x_libraries}: | sed -e 's|:/usr/lib64:|:|g' -e 's|:/lib64:|:|g' -e 's|^:||' -e 's|:$||'`

fi

LD_SWITCH_X_SITE_AUX=
LD_SWITCH_X_SITE_AUX_RPATH=
if test "${x_libraries}" != NONE; then
  if test -n "${x_libraries}"; then
    LD_SWITCH_X_SITE=-L`echo ${x_libraries} | sed -e "s/:/ -L/g"`
    LD_SWITCH_X_SITE_AUX=-R`echo ${x_libraries} | sed -e "s/:/ -R/g"`
    LD_SWITCH_X_SITE_AUX_RPATH=`echo ${LD_SWITCH_X_SITE_AUX} | sed -e 's/-R/-Wl,-rpath,/'`
  fi
  x_default_search_path=""
  x_search_path=${x_libraries}
  if test -z "${x_search_path}"; then
    x_search_path=/usr/lib
  fi
  for x_library in `echo ${x_search_path}: | \
		    sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
    x_search_path="\
${x_library}/X11/%L/%T/%N%C%S:\
${x_library}/X11/%l/%T/%N%C%S:\
${x_library}/X11/%T/%N%C%S:\
${x_library}/X11/%L/%T/%N%S:\
${x_library}/X11/%l/%T/%N%S:\
${x_library}/X11/%T/%N%S"
    if test x"${x_default_search_path}" = x; then
      x_default_search_path=${x_search_path}
    else
      x_default_search_path="${x_search_path}:${x_default_search_path}"
    fi
  done
fi
AC_SUBST(LD_SWITCH_X_SITE_AUX)
AC_SUBST(LD_SWITCH_X_SITE_AUX_RPATH)

if test "${x_includes}" != NONE && test -n "${x_includes}"; then
  C_SWITCH_X_SITE=-I`echo ${x_includes} | sed -e "s/:/ -I/g"`
fi

if test x"${x_includes}" = x; then
  bitmapdir=/usr/include/X11/bitmaps
else
  # accumulate include directories that have X11 bitmap subdirectories
  bmd_acc="dummyval"
  for bmd in `echo ${x_includes} | sed -e "s/:/ /g"`; do
    if test -d "${bmd}/X11/bitmaps"; then
      bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
    fi
    if test -d "${bmd}/bitmaps"; then
      bmd_acc="${bmd_acc}:${bmd}/bitmaps"
    fi
  done
  if test ${bmd_acc} != "dummyval"; then
    bitmapdir=`echo ${bmd_acc} | sed -e "s/^dummyval://"`
  fi
fi

HAVE_NS=no
NS_IMPL_COCOA=no
NS_IMPL_GNUSTEP=no
tmp_CPPFLAGS="$CPPFLAGS"
tmp_CFLAGS="$CFLAGS"
CPPFLAGS="$CPPFLAGS -x objective-c"
CFLAGS="$CFLAGS -x objective-c"
TEMACS_LDFLAGS2="\${LDFLAGS}"
dnl I don't think it's especially important, but src/Makefile.in
dnl (now the only user of ns_appdir) used to go to the trouble of adding a
dnl trailing "/" to it, so now we do it here.
if test "${with_ns}" != no; then
  if test "${opsys}" = darwin; then
     NS_IMPL_COCOA=yes
     ns_appdir=`pwd`/nextstep/Emacs.app
     ns_appbindir=${ns_appdir}/Contents/MacOS/
     ns_appresdir=${ns_appdir}/Contents/Resources
     ns_appsrc=${srcdir}/nextstep/Cocoa/Emacs.base
  elif test -f $GNUSTEP_CONFIG_FILE; then
     NS_IMPL_GNUSTEP=yes
     ns_appdir=`pwd`/nextstep/Emacs.app
     ns_appbindir=${ns_appdir}/
     ns_appresdir=${ns_appdir}/Resources
     ns_appsrc=${srcdir}/nextstep/GNUstep/Emacs.base
     dnl FIXME sourcing this several times in subshells seems inefficient.
     GNUSTEP_SYSTEM_HEADERS="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_SYSTEM_HEADERS)"
     GNUSTEP_SYSTEM_LIBRARIES="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_SYSTEM_LIBRARIES)"
     dnl I seemed to need these as well with GNUstep-startup 0.25.
     GNUSTEP_LOCAL_HEADERS="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_LOCAL_HEADERS)"
     GNUSTEP_LOCAL_LIBRARIES="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_LOCAL_LIBRARIES)"
     test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
       GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
     test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
       GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
     CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
     CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
     LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
     LIB_STANDARD=
     START_FILES=
     TEMACS_LDFLAGS2=
  fi
  AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
  		  [AC_MSG_ERROR([`--with-ns' was specified, but the include
  files are missing or cannot be compiled.])])
  NS_HAVE_NSINTEGER=yes
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <Foundation/NSObjCRuntime.h>],
                                     [NSInteger i;])],
		    ns_have_nsinteger=yes,
		    ns_have_nsinteger=no)
  if test $ns_have_nsinteger = no; then
    NS_HAVE_NSINTEGER=no
  fi
fi
AC_SUBST(TEMACS_LDFLAGS2)

ns_frag=/dev/null
NS_OBJ=
Tom Tromey's avatar
Tom Tromey committed
1506
NS_OBJC_OBJ=
1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517
NS_SUPPORT=
if test "${HAVE_NS}" = yes; then
  window_system=nextstep
  with_xft=no
  # set up packaging dirs
  exec_prefix=${ns_appbindir}
  libexecdir=${ns_appbindir}/libexec
  if test "${EN_NS_SELF_CONTAINED}" = yes; then
     prefix=${ns_appresdir}
  fi
  ns_frag=$srcdir/src/ns.mk
Tom Tromey's avatar
Tom Tromey committed
1518 1519
  NS_OBJ="fontset.o fringe.o image.o"
  NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o nsfont.o"
1520 1521 1522 1523 1524
  NS_SUPPORT="\${lispsource}/emacs-lisp/easymenu.elc \${lispsource}/term/ns-win.elc"
fi
CFLAGS="$tmp_CFLAGS"
CPPFLAGS="$tmp_CPPFLAGS"
AC_SUBST(NS_OBJ)
Tom Tromey's avatar
Tom Tromey committed
1525
AC_SUBST(NS_OBJC_OBJ)
1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815
AC_SUBST(NS_SUPPORT)
AC_SUBST(LIB_STANDARD)
AC_SUBST_FILE(ns_frag)

case "${window_system}" in
  x11 )
    HAVE_X_WINDOWS=yes
    HAVE_X11=yes
    case "${with_x_toolkit}" in
      athena | lucid ) USE_X_TOOLKIT=LUCID ;;
      motif ) USE_X_TOOLKIT=MOTIF ;;
      gtk ) with_gtk=yes
dnl Dont set this for GTK.  A lot of tests below assumes Xt when
dnl USE_X_TOOLKIT is set.
            USE_X_TOOLKIT=none ;;
      gtk3 ) with_gtk3=yes
             USE_X_TOOLKIT=none ;;
      no ) USE_X_TOOLKIT=none ;;
dnl If user did not say whether to use a toolkit, make this decision later:
dnl use the toolkit if we have gtk, or X11R5 or newer.
      * ) USE_X_TOOLKIT=maybe ;;
    esac
  ;;
  nextstep | none )
    HAVE_X_WINDOWS=no
    HAVE_X11=no
    USE_X_TOOLKIT=none
  ;;
esac

if test "$window_system" = none && test "X$with_x" != "Xno"; then
   AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
   if test "$HAVE_XSERVER" = true ||
      test -n "$DISPLAY" ||
      test "`echo /usr/lib/libX11.*`" != "/usr/lib/libX11.*"; then
        AC_MSG_ERROR([You seem to be running X, but no X development libraries
were found.  You should install the relevant development files for X
and for the toolkit you want, such as Gtk+, Lesstif or Motif.  Also make
sure you have development files for image handling, i.e.
tiff, gif, jpeg, png and xpm.
If you are sure you want Emacs compiled without X window support, pass
  --without-x
to configure.])
   fi
fi

### If we're using X11, we should use the X menu package.
HAVE_MENUS=no
case ${HAVE_X11} in
  yes ) HAVE_MENUS=yes ;;
esac

# Do the opsystem or machine files prohibit the use of the GNU malloc?
# Assume not, until told otherwise.
GNU_MALLOC=yes
doug_lea_malloc=yes
AC_CHECK_FUNC(malloc_get_state, ,doug_lea_malloc=no)
AC_CHECK_FUNC(malloc_set_state, ,doug_lea_malloc=no)
AC_CACHE_CHECK(whether __after_morecore_hook exists,
	       emacs_cv_var___after_morecore_hook,
[AC_TRY_LINK([extern void (* __after_morecore_hook)();],[__after_morecore_hook = 0],
  emacs_cv_var___after_morecore_hook=yes,
  emacs_cv_var___after_morecore_hook=no)])
if test $emacs_cv_var___after_morecore_hook = no; then
  doug_lea_malloc=no
fi


dnl See comments in aix4-2.h about maybe using system malloc there.
system_malloc=no
case "$opsys" in
  ## darwin ld insists on the use of malloc routines in the System framework.
  darwin|sol2-10) system_malloc=yes ;;
esac

if test "${system_malloc}" = "yes"; then
  AC_DEFINE(SYSTEM_MALLOC, 1, [Define to use system malloc.])
  GNU_MALLOC=no
  GNU_MALLOC_reason="
    (The GNU allocators don't work with this system configuration.)"
  GMALLOC_OBJ=
  VMLIMIT_OBJ=
else
  test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
  VMLIMIT_OBJ=vm-limit.o
fi
AC_SUBST(GMALLOC_OBJ)
AC_SUBST(VMLIMIT_OBJ)

if test "$doug_lea_malloc" = "yes" ; then
  if test "$GNU_MALLOC" = yes ; then
    GNU_MALLOC_reason="
      (Using Doug Lea's new malloc from the GNU C Library.)"
  fi
  AC_DEFINE(DOUG_LEA_MALLOC, 1,
	    [Define to 1 if you are using the GNU C Library.])

  ## Use mmap directly for allocating larger buffers.
  ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
  ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
  ## Does the AC_FUNC_MMAP test below make this check unecessary?
  case "$opsys" in
    gnu*) REL_ALLOC=no ;;
  esac
fi

if test x"${REL_ALLOC}" = x; then
  REL_ALLOC=${GNU_MALLOC}
fi

use_mmap_for_buffers=no
case "$opsys" in
  freebsd|irix6-5) use_mmap_for_buffers=yes ;;
esac

AC_FUNC_MMAP
if test $use_mmap_for_buffers = yes; then
  AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
  REL_ALLOC=no
fi

LIBS="$LIBS_SYSTEM $LIBS"

dnl If found, this defines HAVE_LIBDNET, which m/pmax.h checks,
dnl and also adds -ldnet to LIBS, which Autoconf uses for checks.
AC_CHECK_LIB(dnet, dnet_ntoa)
dnl This causes -lresolv to get used in subsequent tests,
dnl which causes failures on some systems such as HPUX 9.
dnl AC_CHECK_LIB(resolv, gethostbyname)

dnl FIXME replace main with a function we actually want from this library.
AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")

AC_CHECK_LIB(pthreads, cma_open)

## Note: when using cpp in s/aix4.2.h, this definition depended on
## HAVE_LIBPTHREADS.  That was not defined earlier in configure when
## the system file was sourced.  Hence the value of LIBS_SYSTEM
## added to LIBS in configure would never contain the pthreads part,
## but the value used in Makefiles might.  FIXME?
##
## -lpthreads seems to be necessary for Xlib in X11R6, and should
## be harmless on older versions of X where it happens to exist.
test "$opsys" = "aix4-2" && \
  test $ac_cv_lib_pthreads_cma_open = yes && \
  LIBS_SYSTEM="$LIBS_SYSTEM -lpthreads"

dnl Check for need for bigtoc support on IBM AIX

case ${host_os} in
aix*)
  AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
    case $GCC in
    yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
    *) gdb_cv_bigtoc=-bbigtoc ;;
    esac

    LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
    AC_TRY_LINK([], [int i;], [], [gdb_cv_bigtoc=])
  ])
  ;;
esac

# Change CFLAGS and CPPFLAGS temporarily so that C_SWITCH_X_SITE gets
# used for the tests that follow.  We set them back to REAL_CFLAGS and
# REAL_CPPFLAGS later on.

REAL_CFLAGS="$CFLAGS"
REAL_CPPFLAGS="$CPPFLAGS"

if test "${HAVE_X11}" = "yes"; then
  DEFS="$C_SWITCH_X_SITE $DEFS"
  LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
  LIBS="-lX11 $LIBS"
  CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
  CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"

  # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
  # This is handled by LD_SWITCH_X_SITE_AUX during the real build,
  # but it's more convenient here to set LD_RUN_PATH
  # since this also works on hosts that don't understand LD_SWITCH_X_SITE_AUX.
  if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
    LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
    export LD_RUN_PATH
  fi

  if test "${opsys}" = "gnu-linux"; then
    AC_MSG_CHECKING(whether X on GNU/Linux needs -b to link)
    AC_TRY_LINK([],
     [XOpenDisplay ("foo");],
     [xlinux_first_failure=no],
     [xlinux_first_failure=yes])
    if test "${xlinux_first_failure}" = "yes"; then
      OLD_LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE"
      OLD_C_SWITCH_X_SITE="$C_SWITCH_X_SITE"
      OLD_CPPFLAGS="$CPPFLAGS"
      OLD_LIBS="$LIBS"
      LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
      C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
      CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
      LIBS="$LIBS -b i486-linuxaout"
      AC_TRY_LINK([],
       [XOpenDisplay ("foo");],
       [xlinux_second_failure=no],
       [xlinux_second_failure=yes])
      if test "${xlinux_second_failure}" = "yes"; then
	# If we get the same failure with -b, there is no use adding -b.
	# So take it out.  This plays safe.
	LD_SWITCH_X_SITE="$OLD_LD_SWITCH_X_SITE"
	C_SWITCH_X_SITE="$OLD_C_SWITCH_X_SITE"
	CPPFLAGS="$OLD_CPPFLAGS"
	LIBS="$OLD_LIBS"
        AC_MSG_RESULT(no)
      else
        AC_MSG_RESULT(yes)
      fi
    else
      AC_MSG_RESULT(no)
    fi
  fi

  # Reportedly, some broken Solaris systems have XKBlib.h but are missing
  # header files included from there.
  AC_MSG_CHECKING(for Xkb)
  AC_TRY_LINK([#include <X11/Xlib.h>
#include <X11/XKBlib.h>],
	[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);],
	emacs_xkb=yes, emacs_xkb=no)
  AC_MSG_RESULT($emacs_xkb)
  if test $emacs_xkb = yes; then
    AC_DEFINE(HAVE_XKBGETKEYBOARD, 1, [Define to 1 if you have the XkbGetKeyboard function.])
  fi

  AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
XScreenNumberOfScreen XSetWMProtocols)
fi

if test "${window_system}" = "x11"; then
  AC_MSG_CHECKING(X11 version 6)
  AC_CACHE_VAL(emacs_cv_x11_version_6,
  [AC_TRY_LINK([#include <X11/Xlib.h>],
[#if XlibSpecificationRelease < 6
fail;
#endif
], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
  if test $emacs_cv_x11_version_6 = yes; then
    AC_MSG_RESULT(6 or newer)
    AC_DEFINE(HAVE_X11R6, 1,
	      [Define to 1 if you have the X11R6 or newer version of Xlib.])
    AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
    ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
    ## XIM support.
    case "$opsys" in
      sol2-*) : ;;
      *) AC_DEFINE(HAVE_X11R6_XIM, 1,
           [Define if you have usable X11R6-style XIM support.])
         ;;
    esac
  else
    AC_MSG_RESULT(before 6)
  fi
fi


### Use -lrsvg-2 if available, unless `--with-rsvg=no' is specified.
HAVE_RSVG=no
if test "${HAVE_X11}" = "yes" || test "${NS_IMPL_GNUSTEP}" = "yes"; then
  if test "${with_rsvg}" != "no"; then
    RSVG_REQUIRED=2.11.0
    RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"

    PKG_CHECK_MODULES(RSVG, $RSVG_MODULE, HAVE_RSVG=yes, :)
    AC_SUBST(RSVG_CFLAGS)
    AC_SUBST(RSVG_LIBS)

    if test $HAVE_RSVG = yes; then
      AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
      CFLAGS="$CFLAGS $RSVG_CFLAGS"
      LIBS="$RSVG_LIBS $LIBS"
    fi
  fi
fi

HAVE_IMAGEMAGICK=no
if test "${HAVE_X11}" = "yes"; then
  if test "${with_imagemagick}" != "no"; then
    IMAGEMAGICK_MODULE="Wand"
    PKG_CHECK_MODULES(IMAGEMAGICK, $IMAGEMAGICK_MODULE, HAVE_IMAGEMAGICK=yes, :)
    AC_SUBST(IMAGEMAGICK_CFLAGS)
    AC_SUBST(IMAGEMAGICK_LIBS)
Paul Eggert's avatar
Paul Eggert committed
1816

1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995
    if test $HAVE_IMAGEMAGICK = yes; then
      AC_DEFINE(HAVE_IMAGEMAGICK, 1, [Define to 1 if using imagemagick.])
      CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
      LIBS="$IMAGEMAGICK_LIBS $LIBS"
      AC_CHECK_FUNCS(MagickExportImagePixels)
    fi
  fi
fi


HAVE_GTK=no
if test "${with_gtk3}" = "yes"; then
  GLIB_REQUIRED=2.6
  GTK_REQUIRED=2.90
  GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"

  dnl Checks for libraries.
  PKG_CHECK_MODULES(GTK, $GTK_MODULES, pkg_check_gtk=yes, pkg_check_gtk=no)
  if test "$pkg_check_gtk" = "no" && test "$USE_X_TOOLKIT" != "maybe"; then
     AC_MSG_ERROR($GTK_PKG_ERRORS)
  fi
fi

if test "$pkg_check_gtk" != "yes"; then
  HAVE_GTK=no
if test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
  GLIB_REQUIRED=2.6
  GTK_REQUIRED=2.6
  GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"

  dnl Checks for libraries.
  PKG_CHECK_MODULES(GTK, $GTK_MODULES, pkg_check_gtk=yes, pkg_check_gtk=no)
  if test "$pkg_check_gtk" = "no" && test "$USE_X_TOOLKIT" != "maybe"; then
     AC_MSG_ERROR($GTK_PKG_ERRORS)
  fi
fi
fi

GTK_OBJ=
if test x"$pkg_check_gtk" = xyes; then

  AC_SUBST(GTK_CFLAGS)
  AC_SUBST(GTK_LIBS)
  C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
  CFLAGS="$CFLAGS $GTK_CFLAGS"
  LIBS="$GTK_LIBS $LIBS"
  dnl Try to compile a simple GTK program.
  GTK_COMPILES=no
  AC_CHECK_FUNCS(gtk_main, GTK_COMPILES=yes)
  if test "${GTK_COMPILES}" != "yes"; then
    if test "$USE_X_TOOLKIT" != "maybe"; then
      AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log.  Maybe some x11-devel files missing?]);
    fi
  else
    HAVE_GTK=yes
    AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
    GTK_OBJ=gtkutil.o
    USE_X_TOOLKIT=none
    if $PKG_CONFIG --atleast-version=2.10 gtk+-2.0; then
      :
    else
      AC_MSG_WARN([[Your version of Gtk+ will have problems with
       closing open displays.  This is no problem if you just use
       one display, but if you use more than one and close one of them
       Emacs may crash.]])
      sleep 3
    fi
  fi

fi
AC_SUBST(GTK_OBJ)


if test "${HAVE_GTK}" = "yes"; then

  dnl  GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
  dnl  a lot if #ifdef:s, say we have toolkit scrollbars.
  if test "$with_toolkit_scroll_bars" != no; then
    with_toolkit_scroll_bars=yes
  fi

  dnl  Check if we have the old file selection dialog declared and
  dnl  in the link library.  In 2.x it may be in the library,
  dnl  but not declared if deprecated featured has been selected out.
  dnl  AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
  HAVE_GTK_FILE_SELECTION=no
  AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
                   HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
#include <gtk/gtk.h>])
  if test "$HAVE_GTK_FILE_SELECTION" = yes; then
    AC_CHECK_FUNCS(gtk_file_selection_new)
  fi

  dnl Check if pthreads are available.  Emacs only needs this when using
  dnl gtk_file_chooser under Gnome.
    HAVE_GTK_AND_PTHREAD=no
    AC_CHECK_HEADERS(pthread.h)
    if test "$ac_cv_header_pthread_h"; then
      AC_CHECK_LIB(pthread, pthread_self, HAVE_GTK_AND_PTHREAD=yes)
    fi
    if test "$HAVE_GTK_AND_PTHREAD" = yes; then
      case "${canonical}" in
        *-hpux*) ;;
        *) GTK_LIBS="$GTK_LIBS -lpthread" ;;
      esac
      AC_DEFINE(HAVE_GTK_AND_PTHREAD, 1,
               [Define to 1 if you have GTK and pthread (-lpthread).])
    fi

  dnl Check for functions introduced in 2.14 and later.
  AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
                 gtk_dialog_get_action_area gtk_widget_get_sensitive \
                 gtk_widget_get_mapped gtk_adjustment_get_page_size \
                 gtk_orientable_set_orientation)

fi

dnl D-Bus has been tested under GNU/Linux only.  Must be adapted for
dnl other platforms.  Support for higher D-Bus versions than 1.0 is
dnl also not configured.
HAVE_DBUS=no
DBUS_OBJ=
if test "${with_dbus}" = "yes"; then
   PKG_CHECK_MODULES(DBUS, dbus-1 >= 1.0, HAVE_DBUS=yes, HAVE_DBUS=no)
   if test "$HAVE_DBUS" = yes; then
     LIBS="$LIBS $DBUS_LIBS"
     AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
     AC_CHECK_FUNCS([dbus_watch_get_unix_fd])
     DBUS_OBJ=dbusbind.o
   fi
fi
AC_SUBST(DBUS_OBJ)

dnl GConf has been tested under GNU/Linux only.
dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
HAVE_GCONF=no
if test "${HAVE_X11}" = "yes" && test "${with_gconf}" = "yes"; then
   PKG_CHECK_MODULES(GCONF, gconf-2.0 >= 2.13, HAVE_GCONF=yes, HAVE_GCONF=no)
   if test "$HAVE_GCONF" = yes; then
      AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
      dnl Newer GConf doesn't link with g_objects, so this is not defined.
      AC_CHECK_FUNCS([g_type_init])
   fi
fi

dnl SELinux is available for GNU/Linux only.
HAVE_LIBSELINUX=no
LIBSELINUX_LIBS=
if test "${with_selinux}" = "yes"; then
   AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
   if test "$HAVE_LIBSELINUX" = yes; then
      AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
      LIBSELINUX_LIBS=-lselinux
   fi
fi
AC_SUBST(LIBSELINUX_LIBS)

HAVE_GNUTLS=no
if test "${with_gnutls}" = "yes" ; then
  PKG_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.2.4], HAVE_GNUTLS=yes, HAVE_GNUTLS=no)
  if test "${HAVE_GNUTLS}" = "yes"; then
    AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
  fi
fi
AC_SUBST(LIBGNUTLS_LIBS)
AC_SUBST(LIBGNUTLS_CFLAGS)

dnl Do not put whitespace before the #include statements below.
dnl Older compilers (eg sunos4 cc) choke on it.
HAVE_XAW3D=no
LUCID_LIBW=
if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
  if test "$with_xaw3d" != no; then
    AC_MSG_CHECKING(for xaw3d)
    AC_CACHE_VAL(emacs_cv_xaw3d,
    [AC_TRY_LINK([
#include <X11/Intrinsic.h>
#include <X11/Xaw3d/Simple.h>],
      [],
1996 1997
      [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
                    emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072
      emacs_cv_xaw3d=no)])
  else
    emacs_cv_xaw3d=no
  fi
  if test $emacs_cv_xaw3d = yes; then
    AC_MSG_RESULT([yes; using Lucid toolkit])
    USE_X_TOOLKIT=LUCID
    HAVE_XAW3D=yes
    LUCID_LIBW=-lXaw3d
    AC_DEFINE(HAVE_XAW3D, 1,
              [Define to 1 if you have the Xaw3d library (-lXaw3d).])
  else
    AC_MSG_RESULT(no)
    AC_MSG_CHECKING(for libXaw)
    AC_CACHE_VAL(emacs_cv_xaw,
    [AC_TRY_LINK([
#include <X11/Intrinsic.h>
#include <X11/Xaw/Simple.h>],
      [],
      emacs_cv_xaw=yes,
      emacs_cv_xaw=no)])
    if test $emacs_cv_xaw = yes; then
      AC_MSG_RESULT([yes; using Lucid toolkit])
      USE_X_TOOLKIT=LUCID
      LUCID_LIBW=-lXaw
    elif test x"${USE_X_TOOLKIT}" = xLUCID; then
      AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
    else
      AC_MSG_RESULT([no; do not use toolkit by default])
      USE_X_TOOLKIT=none
    fi
  fi
fi

X_TOOLKIT_TYPE=$USE_X_TOOLKIT

LIBXTR6=
if test "${USE_X_TOOLKIT}" != "none"; then
  AC_MSG_CHECKING(X11 toolkit version)
  AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
  [AC_TRY_LINK([#include <X11/Intrinsic.h>],
[#if XtSpecificationRelease < 6
fail;
#endif
], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
  HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
  if test $emacs_cv_x11_toolkit_version_6 = yes; then
    AC_MSG_RESULT(6 or newer)
    AC_DEFINE(HAVE_X11XTR6, 1,
	      [Define to 1 if you have the X11R6 or newer version of Xt.])
    LIBXTR6="-lSM -lICE"
    case "$opsys" in
      ## Use libw.a along with X11R6 Xt.
      unixware) LIBXTR6="$LIBXTR6 -lw" ;;
    esac
  else
    AC_MSG_RESULT(before 6)
  fi

dnl If using toolkit, check whether libXmu.a exists.
dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
  OLDLIBS="$LIBS"
  if test x$HAVE_X11XTR6 = xyes; then
    LIBS="-lXt -lSM -lICE $LIBS"
  else
    LIBS="-lXt $LIBS"
  fi
  AC_CHECK_LIB(Xmu, XmuConvertStandardSelection)
  test $ac_cv_lib_Xmu_XmuConvertStandardSelection = no && LIBS="$OLDLIBS"
fi
AC_SUBST(LIBXTR6)

dnl FIXME the logic here seems weird, but this is what cpp was doing.
dnl Why not just test for libxmu in the normal way?
LIBXMU=-lXmu
2073 2074
case $opsys in
  ## These systems don't supply Xmu.
2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253
  hpux* | aix4-2 )
    test "X$ac_cv_lib_Xmu_XmuConvertStandardSelection" != "Xyes" && LIBXMU=
    ;;
esac
AC_SUBST(LIBXMU)

# On Irix 6.5, at least, we need XShapeQueryExtension from -lXext for Xaw3D.
if test "${HAVE_X11}" = "yes"; then
  if test "${USE_X_TOOLKIT}" != "none"; then
    AC_CHECK_LIB(Xext, XShapeQueryExtension)
  fi
fi

LIBXP=
if test "${USE_X_TOOLKIT}" = "MOTIF"; then
  AC_CACHE_CHECK(for Motif version 2.1, emacs_cv_motif_version_2_1,
  [AC_TRY_COMPILE([#include <Xm/Xm.h>],
    [#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
int x = 5;
#else
Motif version prior to 2.1.
#endif],
    emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
  if test $emacs_cv_motif_version_2_1 = yes; then
    AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
  else
    AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
    # We put this in CFLAGS temporarily to precede other -I options
    # that might be in CFLAGS temporarily.
    # We put this in CPPFLAGS where it precedes the other -I options.
    OLD_CPPFLAGS=$CPPFLAGS
    OLD_CFLAGS=$CFLAGS
    CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
    CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
    [AC_TRY_COMPILE([#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>],
      [int x = 5;],
      emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
    if test $emacs_cv_lesstif = yes; then
      # Make sure this -I option remains in CPPFLAGS after it is set
      # back to REAL_CPPFLAGS.
      # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
      # have those other -I options anyway.  Ultimately, having this
      # directory ultimately in CPPFLAGS will be enough.
      REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
      LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
    else
      CFLAGS=$OLD_CFLAGS
      CPPFLAGS=$OLD_CPPFLAGS
    fi
  fi
fi

dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
dnl using Motif or Xaw3d is available, and unless
dnl --with-toolkit-scroll-bars=no was specified.

AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
	    [Define to 1 if we should use toolkit scroll bars.])dnl
USE_TOOLKIT_SCROLL_BARS=no
if test "${with_toolkit_scroll_bars}" != "no"; then
  if test "${USE_X_TOOLKIT}" != "none"; then
    if test "${USE_X_TOOLKIT}" = "MOTIF"; then
      AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
      HAVE_XAW3D=no
      USE_TOOLKIT_SCROLL_BARS=yes
    elif test "${HAVE_XAW3D}" = "yes"; then
      AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
      USE_TOOLKIT_SCROLL_BARS=yes
    fi
  elif test "${HAVE_GTK}" = "yes"; then
    AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
    USE_TOOLKIT_SCROLL_BARS=yes
  elif test "${HAVE_NS}" = "yes"; then
    AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
    USE_TOOLKIT_SCROLL_BARS=yes
  fi
fi

dnl See if XIM is available.
AC_TRY_COMPILE([
	  #include <X11/Xlib.h>
	  #include <X11/Xresource.h>],
	 [XIMProc  callback;],
	 [HAVE_XIM=yes
	 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
	 HAVE_XIM=no)

dnl `--with-xim' now controls only the initial value of use_xim at run time.

if test "${with_xim}" != "no"; then
  AC_DEFINE(USE_XIM, 1,
	    [Define to 1 if we should use XIM, if it is available.])
fi


if test "${HAVE_XIM}" != "no"; then
  late_CFLAGS=$CFLAGS
  if test "$GCC" = yes; then
    CFLAGS="$CFLAGS --pedantic-errors"
  fi
  AC_TRY_COMPILE([
#include <X11/Xlib.h>
#include <X11/Xresource.h>],
[Display *display;
XrmDatabase db;
char *res_name;
char *res_class;
XIMProc  callback;
XPointer *client_data;
#ifndef __GNUC__
/* If we're not using GCC, it's probably not XFree86, and this is
   probably right, but we can't use something like --pedantic-errors.  */
extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
                                           char*, XIMProc, XPointer*);
#endif
(void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
   client_data);],
    [emacs_cv_arg6_star=yes])
  AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
         [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
either XPointer or XPointer*.])dnl
  if test "$emacs_cv_arg6_star" = yes; then
    AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
  else
    AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
  fi
  CFLAGS=$late_CFLAGS
fi

### Start of font-backend (under any platform) section.
# (nothing here yet -- this is a placeholder)
### End of font-backend (under any platform) section.

### Start of font-backend (under X11) section.
if test "${HAVE_X11}" = "yes"; then
   PKG_CHECK_MODULES(FONTCONFIG, fontconfig >= 2.2.0, HAVE_FC=yes, HAVE_FC=no)

   ## Use -lXft if available, unless `--with-xft=no'.
   HAVE_XFT=maybe
    if test "${HAVE_FC}" = "no" || test "x${with_x}" = "xno"; then
      with_xft="no";
    fi
    if test "x${with_xft}" != "xno"; then

      PKG_CHECK_MODULES(XFT, xft >= 0.13.0, , HAVE_XFT=no)
      ## Because xftfont.c uses XRenderQueryExtension, we also
      ## need to link to -lXrender.
      HAVE_XRENDER=no
      AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
      if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
	OLD_CPPFLAGS="$CPPFLAGS"
	OLD_CFLAGS="$CFLAGS"
	OLD_LIBS="$LIBS"
	CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
	CFLAGS="$CFLAGS $XFT_CFLAGS"
	XFT_LIBS="-lXrender $XFT_LIBS"
	LIBS="$XFT_LIBS $LIBS"
	AC_CHECK_HEADER(X11/Xft/Xft.h,
	  AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS))

	if test "${HAVE_XFT}" = "yes"; then
	  AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
	    AC_SUBST(XFT_LIBS)
	  C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
	else
	  CPPFLAGS="$OLD_CPPFLAGS"
	  CFLAGS="$OLD_CFLAGS"
	  LIBS="$OLD_LIBS"
	fi                        # "${HAVE_XFT}" = "yes"
      fi                          # "$HAVE_XFT" != no
    fi                            # "x${with_xft}" != "xno"

    dnl For the "Does Emacs use" message at the end.
    if test "$HAVE_XFT" != "yes"; then
       HAVE_XFT=no
    fi

    ## We used to allow building with FreeType and without Xft.
    ## However, the ftx font backend driver is not in good shape.
2254
    HAVE_FREETYPE=$HAVE_XFT
2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516

    HAVE_LIBOTF=no
    if test "${HAVE_FREETYPE}" = "yes"; then
      AC_DEFINE(HAVE_FREETYPE, 1,
		[Define to 1 if using the freetype and fontconfig libraries.])
      if test "${with_libotf}" != "no"; then
	PKG_CHECK_MODULES(LIBOTF, libotf, HAVE_LIBOTF=yes,
			  HAVE_LIBOTF=no)
	if test "$HAVE_LIBOTF" = "yes"; then
	  AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
	  AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
		       HAVE_OTF_GET_VARIATION_GLYPHS=yes,
		       HAVE_OTF_GET_VARIATION_GLYPHS=no)
	  if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
	    AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
		      [Define to 1 if libotf has OTF_get_variation_glyphs.])
	  fi
	fi
      fi
    dnl FIXME should there be an error if HAVE_FREETYPE != yes?
    dnl Does the new font backend require it, or can it work without it?
    fi

    HAVE_M17N_FLT=no
    if test "${HAVE_LIBOTF}" = yes; then
      if test "${with_m17n_flt}" != "no"; then
	PKG_CHECK_MODULES(M17N_FLT, m17n-flt, HAVE_M17N_FLT=yes, HAVE_M17N_FLT=no)
	if test "$HAVE_M17N_FLT" = "yes"; then
	  AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
	fi
      fi
    fi
else
    HAVE_XFT=no
    HAVE_FREETYPE=no
    HAVE_LIBOTF=no
    HAVE_M17N_FLT=no
fi

### End of font-backend (under X11) section.

AC_SUBST(FREETYPE_CFLAGS)
AC_SUBST(FREETYPE_LIBS)
AC_SUBST(FONTCONFIG_CFLAGS)
AC_SUBST(FONTCONFIG_LIBS)
AC_SUBST(LIBOTF_CFLAGS)
AC_SUBST(LIBOTF_LIBS)
AC_SUBST(M17N_FLT_CFLAGS)
AC_SUBST(M17N_FLT_LIBS)

### Use -lXpm if available, unless `--with-xpm=no'.
HAVE_XPM=no
LIBXPM=
if test "${HAVE_X11}" = "yes"; then
  if test "${with_xpm}" != "no"; then
    AC_CHECK_HEADER(X11/xpm.h,
      [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
    if test "${HAVE_XPM}" = "yes"; then
      AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
      AC_EGREP_CPP(no_return_alloc_pixels,
      [#include "X11/xpm.h"
#ifndef XpmReturnAllocPixels
no_return_alloc_pixels
#endif
      ], HAVE_XPM=no, HAVE_XPM=yes)

      if test "${HAVE_XPM}" = "yes"; then
	AC_MSG_RESULT(yes)
      else
	AC_MSG_RESULT(no)
      fi
    fi
  fi

  if test "${HAVE_XPM}" = "yes"; then
    AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm libary (-lXpm).])
    LIBXPM=-lXpm
  fi
fi
AC_SUBST(LIBXPM)

### Use -ljpeg if available, unless `--with-jpeg=no'.
HAVE_JPEG=no
LIBJPEG=
if test "${HAVE_X11}" = "yes"; then
  if test "${with_jpeg}" != "no"; then
    dnl Checking for jpeglib.h can lose because of a redefinition of
    dnl  HAVE_STDLIB_H.
    AC_CHECK_HEADER(jerror.h,
      [AC_CHECK_LIB(jpeg, jpeg_destroy_compress, HAVE_JPEG=yes)])
  fi

  AH_TEMPLATE(HAVE_JPEG, [Define to 1 if you have the jpeg library (-ljpeg).])dnl
  if test "${HAVE_JPEG}" = "yes"; then
    AC_DEFINE(HAVE_JPEG)
    AC_EGREP_CPP([version= *(6[2-9]|[7-9][0-9])],
        [#include <jpeglib.h>
	 version=JPEG_LIB_VERSION
],
        [AC_DEFINE(HAVE_JPEG)],
        [AC_MSG_WARN([libjpeg found, but not version 6b or later])
        HAVE_JPEG=no])
  fi
  if test "${HAVE_JPEG}" = "yes"; then
    LIBJPEG=-ljpeg
  fi
fi
AC_SUBST(LIBJPEG)

### Use -lpng if available, unless `--with-png=no'.
HAVE_PNG=no
LIBPNG=
if test "${HAVE_X11}" = "yes"; then
  if test "${with_png}" != "no"; then
    # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
    # in /usr/include/libpng.
    AC_CHECK_HEADERS(png.h libpng/png.h)
    if test "$ac_cv_header_png_h" = yes || test "$ac_cv_header_libpng_png_h" = yes ; then
      AC_CHECK_LIB(png, png_get_channels, HAVE_PNG=yes, , -lz -lm)
    fi
  fi

  if test "${HAVE_PNG}" = "yes"; then
    AC_DEFINE(HAVE_PNG, 1, [Define to 1 if you have the png library (-lpng).])
    LIBPNG="-lpng -lz -lm"
  fi
fi
AC_SUBST(LIBPNG)

### Use -ltiff if available, unless `--with-tiff=no'.
HAVE_TIFF=no
LIBTIFF=
if test "${HAVE_X11}" = "yes"; then
  if test "${with_tiff}" != "no"; then
    AC_CHECK_HEADER(tiffio.h,
      [tifflibs="-lz -lm"
      # At least one tiff package requires the jpeg library.
      if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
      AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
  fi

  if test "${HAVE_TIFF}" = "yes"; then
    AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
    dnl FIXME -lz -lm, as per libpng?
    LIBTIFF=-ltiff
  fi
fi
AC_SUBST(LIBTIFF)

### Use -lgif or -lungif if available, unless `--with-gif=no'.
HAVE_GIF=no
LIBGIF=
if test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no"; then
  AC_CHECK_HEADER(gif_lib.h,
# EGifPutExtensionLast only exists from version libungif-4.1.0b1.
# Earlier versions can crash Emacs.
    [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])

  if test "$HAVE_GIF" = yes; then
    LIBGIF=-lgif
  elif test "$HAVE_GIF" = maybe; then
# If gif_lib.h but no libgif, try libungif.
    AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
    test "$HAVE_GIF" = yes && LIBGIF=-lungif
  fi

  if test "${HAVE_GIF}" = "yes"; then
    AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
  fi
fi
AC_SUBST(LIBGIF)

dnl Check for required libraries.
if test "${HAVE_X11}" = "yes"; then
  MISSING=""
  WITH_NO=""
  test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
    MISSING="libXpm" && WITH_NO="--with-xpm=no"
  test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
    MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
  test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
    MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
  test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
    MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
  test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
    MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"

  if test "X${MISSING}" != X; then
    AC_MSG_ERROR([The following required libraries were not found:
    $MISSING
Maybe some development libraries/packages are missing?
If you don't want to link with them give
    $WITH_NO
as options to configure])
  fi
fi

### Use -lgpm if available, unless `--with-gpm=no'.
HAVE_GPM=no
LIBGPM=
MOUSE_SUPPORT=
if test "${with_gpm}" != "no"; then
  AC_CHECK_HEADER(gpm.h,
    [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])

  if test "${HAVE_GPM}" = "yes"; then
    AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
    LIBGPM=-lgpm
    ## May be reset below.
    MOUSE_SUPPORT="\$(GPM_MOUSE_SUPPORT)"
  fi
fi
AC_SUBST(LIBGPM)

dnl Check for malloc/malloc.h on darwin
AC_CHECK_HEADER(malloc/malloc.h, [AC_DEFINE(HAVE_MALLOC_MALLOC_H, 1, [Define to 1 if you have the <malloc/malloc.h> header file.])])

C_SWITCH_X_SYSTEM=
### Use NeXTstep API to implement GUI.
if test "${HAVE_NS}" = "yes"; then
  AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on Mac OS X.])
  if test "${NS_IMPL_COCOA}" = "yes"; then
    AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under MacOS X.])
    GNU_OBJC_CFLAGS=
  fi
  if test "${NS_IMPL_GNUSTEP}" = "yes"; then
    AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
    # See also .m.o rule in Makefile.in */
    # FIXME: are all these flags really needed?  Document here why.  */
    C_SWITCH_X_SYSTEM="-D_REENTRANT -fPIC -fno-strict-aliasing"
    GNU_OBJC_CFLAGS="-fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
  fi
  if test "${NS_HAVE_NSINTEGER}" = "yes"; then
    AC_DEFINE(NS_HAVE_NSINTEGER, 1, [Define to 1 if `NSInteger' is defined.])
  fi
  # We also have mouse menus.
  HAVE_MENUS=yes
  OTHER_FILES=ns-app
fi


### Use session management (-lSM -lICE) if available
HAVE_X_SM=no
LIBXSM=
if test "${HAVE_X11}" = "yes"; then
  AC_CHECK_HEADER(X11/SM/SMlib.h,
    [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])

  if test "${HAVE_X_SM}" = "yes"; then
    AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
    LIBXSM="-lSM -lICE"
    case "$LIBS" in
      *-lSM*) ;;
      *)      LIBS="$LIBXSM $LIBS" ;;
    esac
  fi
fi
AC_SUBST(LIBXSM)

### Use libxml (-lxml2) if available
if test "${with_xml2}" != "no"; then
  ### I'm not sure what the version number should be, so I just guessed.
2517
  PKG_CHECK_MODULES(LIBXML2, libxml-2.0 > 2.6.17, HAVE_LIBXML2=yes, HAVE_LIBXML2=no)
2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633
  if test "${HAVE_LIBXML2}" = "yes"; then
    LIBS="$LIBXML2_LIBS $LIBS"
    AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no)
    if test "${HAVE_LIBXML2}" = "yes"; then
      AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
    else
      LIBXML2_LIBS=""
      LIBXML2_CFLAGS=""
    fi
  fi
fi
AC_SUBST(LIBXML2_LIBS)
AC_SUBST(LIBXML2_CFLAGS)

# If netdb.h doesn't declare h_errno, we must declare it by hand.
AC_CACHE_CHECK(whether netdb declares h_errno,
	       emacs_cv_netdb_declares_h_errno,
[AC_TRY_LINK([#include <netdb.h>],
  [return h_errno;],
  emacs_cv_netdb_declares_h_errno=yes, emacs_cv_netdb_declares_h_errno=no)])
if test $emacs_cv_netdb_declares_h_errno = yes; then
  AC_DEFINE(HAVE_H_ERRNO, 1, [Define to 1 if netdb.h declares h_errno.])
fi

AC_FUNC_ALLOCA

dnl src/alloca.c has been removed.  Could also check if $ALLOCA is set?
dnl FIXME is there an autoconf test that does the right thing, without
dnl needing to call A_M_E afterwards?
if test x"$ac_cv_func_alloca_works" != xyes; then
   AC_MSG_ERROR( [a system implementation of alloca is required] )
fi

# fmod, logb, and frexp are found in -lm on most systems.
# On HPUX 9.01, -lm does not contain logb, so check for sqrt.
AC_CHECK_LIB(m, sqrt)

# Check for mail-locking functions in a "mail" library.  Probably this should
# have the same check as for liblockfile below.
AC_CHECK_LIB(mail, maillock, have_mail=yes, have_mail=no)
if test $have_mail = yes; then
  LIBS_MAIL=-lmail
  LIBS="$LIBS_MAIL $LIBS"
  AC_DEFINE(HAVE_LIBMAIL, 1, [Define to 1 if you have the `mail' library (-lmail).])
else
  LIBS_MAIL=
fi
dnl Debian, at least:
AC_CHECK_LIB(lockfile, maillock, have_lockfile=yes, have_lockfile=no)
if test $have_lockfile = yes; then
   LIBS_MAIL=-llockfile
   LIBS="$LIBS_MAIL $LIBS"
   AC_DEFINE(HAVE_LIBLOCKFILE, 1, [Define to 1 if you have the `lockfile' library (-llockfile).])
else
# If we have the shared liblockfile, assume we must use it for mail
# locking (e.g. Debian).  If we couldn't link against liblockfile
# (no liblockfile.a installed), ensure that we don't need to.
  dnl This works for files generally, not just executables.
  dnl Should we look elsewhere for it?  Maybe examine /etc/ld.so.conf?
  AC_CHECK_PROG(liblockfile, liblockfile.so, yes, no,
                /usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH)
  if test $ac_cv_prog_liblockfile = yes; then
    AC_MSG_ERROR([Shared liblockfile found but can't link against it.
This probably means that movemail could lose mail.
There may be a `development' package to install containing liblockfile.])
  fi
fi
AC_CHECK_FUNCS(touchlock)
AC_CHECK_HEADERS(maillock.h)
AC_SUBST(LIBS_MAIL)

## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
## interlock access to the mail spool.  The alternative is a lock file named
## /usr/spool/mail/$USER.lock.
mail_lock=no
case "$opsys" in
  aix4-2) mail_lock="lockf" ;;

  gnu|freebsd|netbsd|openbsd|darwin|irix6-5) mail_lock="flock" ;;

  ## On GNU/Linux systems, both methods are used by various mail programs.
  ## I assume most people are using newer mailers that have heard of flock.
  ## Change this if you need to.
  ## Debian contains a patch which says: ``On Debian/GNU/Linux systems,
  ## configure gets the right answers, and that means *NOT* using flock.
  ## Using flock is guaranteed to be the wrong thing. See Debian Policy
  ## for details.'' and then uses `#ifdef DEBIAN'.  Unfortunately the
  ## Debian maintainer hasn't provided a clean fix for Emacs.
  ## movemail.c will use `maillock' when MAILDIR, HAVE_LIBMAIL and
  ## HAVE_MAILLOCK_H are defined, so the following appears to be the
  ## correct logic.  -- fx
  ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
  ## liblockfile is a Free Software replacement for libmail, used on
  ## Debian systems and elsewhere. -rfr.
  gnu-*)
    mail_lock="flock"
    if test $have_mail = yes || test $have_lockfile = yes; then
      test $ac_cv_header_maillock_h = yes && mail_lock=no
    fi
    ;;
esac

BLESSMAIL_TARGET=
case "$mail_lock" in
  flock) AC_DEFINE(MAIL_USE_FLOCK, 1, [Define if the mailer uses flock to interlock the mail spool.]) ;;

  lockf) AC_DEFINE(MAIL_USE_LOCKF, 1, [Define if the mailer uses lockf to interlock the mail spool.]) ;;

  *) BLESSMAIL_TARGET="need-blessmail" ;;
esac
AC_SUBST(BLESSMAIL_TARGET)


AC_CHECK_FUNCS(gethostname getdomainname dup2 \
rename closedir mkdir rmdir sysinfo getrusage get_current_dir_name \
random lrand48 logb frexp fmod rint cbrt ftime setsid \
Paul Eggert's avatar
Paul Eggert committed
2634
strerror fpathconf select euidaccess getpagesize tzset setlocale \
2635 2636 2637 2638 2639 2640 2641
utimes getrlimit setrlimit setpgid getcwd getwd shutdown getaddrinfo \
__fpending mblen mbrlen mbsinit strsignal setitimer ualarm strchr strrchr \
sendto recvfrom getsockopt setsockopt getsockname getpeername \
gai_strerror mkstemp getline getdelim mremap memmove fsync sync \
memset memcmp difftime memcpy mempcpy mblen mbrlen posix_memalign \
cfmakeraw cfsetspeed isnan copysign __executable_start)

2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652
dnl Cannot use AC_CHECK_FUNCS
AC_CACHE_CHECK([for __builtin_unwind_init],
	       emacs_cv_func___builtin_unwind_init,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
		emacs_cv_func___builtin_unwind_init=yes,
		emacs_cv_func___builtin_unwind_init=no)])
if test $emacs_cv_func___builtin_unwind_init = yes; then
  AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
	    [Define to 1 if you have the `__builtin_unwind_init' function.])
fi

2653 2654 2655 2656 2657 2658
AC_CHECK_HEADERS(sys/un.h)

AC_FUNC_FSEEKO

AC_FUNC_GETPGRP

Paul Eggert's avatar
Paul Eggert committed
2659
# Configure gnulib.
2660
gl_ASSERT_NO_GNULIB_POSIXCHECK
Paul Eggert's avatar
Paul Eggert committed
2661
gl_ASSERT_NO_GNULIB_TESTS
Paul Eggert's avatar
Paul Eggert committed
2662 2663
gl_INIT

Paul Eggert's avatar
Paul Eggert committed
2664 2665 2666 2667 2668 2669 2670 2671 2672
# Emacs does not care about lstat's behavior on files whose names end in
# trailing slashes, so it does not use the gnulib lstat module.
# However, Emacs does want the "#define lstat stat" in sys/stat.h
# when lstat does not exist, so it pretends to use the lstat module
# even though it implements only the lstat-checking part of that module.
AC_CHECK_FUNCS_ONCE([lstat])
test $ac_cv_func_lstat = yes || HAVE_LSTAT=0
gl_SYS_STAT_MODULE_INDICATOR([lstat])

2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722