configure.in 123 KB
Newer Older
1
dnl  Autoconf script for GNU Emacs
David J. MacKenzie's avatar
David J. MacKenzie committed
2 3 4
dnl To rebuild the `configure' script from this, execute the command
dnl 	autoconf
dnl in the directory containing this script.
5
dnl If you changed any AC_DEFINES, also run autoheader.
6
dnl
7 8 9
dnl  Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2003, 2004,
dnl    2005, 2006, 2007, 2008, 2009, 2010
dnl    Free Software Foundation, Inc.
10
dnl
11
dnl  This file is part of GNU Emacs.
12
dnl
13
dnl  GNU Emacs is free software: you can redistribute it and/or modify
14
dnl  it under the terms of the GNU General Public License as published by
15 16
dnl  the Free Software Foundation, either version 3 of the License, or
dnl  (at your option) any later version.
17
dnl
18 19 20 21
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.
22
dnl
23
dnl  You should have received a copy of the GNU General Public License
24
dnl  along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
25

26
AC_PREREQ(2.65)
Chong Yidong's avatar
Chong Yidong committed
27
AC_INIT(emacs, 24.0.50)
28
AC_CONFIG_HEADER(src/config.h:src/config.in)
29
AC_CONFIG_SRCDIR(src/lisp.h)
David J. MacKenzie's avatar
David J. MacKenzie committed
30

31 32 33 34
dnl Support for --program-prefix, --program-suffix and
dnl --program-transform-name options
AC_ARG_PROGRAM

35 36 37 38
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.
David J. MacKenzie's avatar
David J. MacKenzie committed
39
lispdir='${datadir}/emacs/${version}/lisp'
40
locallisppath='${datadir}/emacs/${version}/site-lisp:'\
41 42
'${datadir}/emacs/site-lisp'
lisppath='${locallisppath}:${lispdir}:${datadir}/emacs/${version}/leim'
David J. MacKenzie's avatar
David J. MacKenzie committed
43
etcdir='${datadir}/emacs/${version}/etc'
44
archlibdir='${libexecdir}/emacs/${version}/${configuration}'
David J. MacKenzie's avatar
David J. MacKenzie committed
45
docdir='${datadir}/emacs/${version}/etc'
46
gamedir='${localstatedir}/games/emacs'
47 48

gameuser=games
David J. MacKenzie's avatar
David J. MacKenzie committed
49

50 51 52 53 54 55 56 57 58 59 60 61
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
62
])dnl
63 64 65 66 67 68 69 70 71 72 73 74

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
75 76
])dnl

77 78
OPTION_DEFAULT_ON([pop],[don't support POP mail retrieval with movemail])
if test "$with_pop" = yes; then
Dave Love's avatar
Dave Love committed
79
   AC_DEFINE(MAIL_USE_POP)
80
fi
81
AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
82

83
OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
84
if test "$with_kerberos" != no; then
85
   AC_DEFINE(KERBEROS)
86
fi
87 88
AH_TEMPLATE(KERBEROS,
	    [Define to support Kerberos-authenticated POP mail retrieval.])dnl
89

90
OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
91 92
if test "${with_kerberos5}" != no; then
  if test "${with_kerberos}" = no; then
93 94 95
    with_kerberos=yes
    AC_DEFINE(KERBEROS)
  fi
96
  AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
97
fi
98

99
OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
Glenn Morris's avatar
Glenn Morris committed
100 101
dnl FIXME hesiod support may not be present, so it seems like an error
dnl to define, or at least use, this unconditionally.
102
if test "$with_hesiod" != no; then
103
  AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
104
fi
Pavel Janík's avatar
Pavel Janík committed
105

Glenn Morris's avatar
Glenn Morris committed
106 107 108 109 110 111 112 113 114 115 116 117 118 119
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.]))

120
OPTION_DEFAULT_ON([sound],[don't compile with sound support])
Pavel Janík's avatar
Pavel Janík committed
121

122
OPTION_DEFAULT_ON([sync-input],[process async input synchronously])
123 124 125 126
if test "$with_sync_input" = yes; then
   AC_DEFINE(SYNC_INPUT, 1, [Process async input synchronously.])
fi

127
dnl FIXME currently it is not the last.
David J. MacKenzie's avatar
David J. MacKenzie committed
128 129 130
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.
131
AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
132
 [use an X toolkit (KIT one of: yes or gtk, gtk3, lucid or athena, motif, no)])],
David J. MacKenzie's avatar
David J. MacKenzie committed
133
[	  case "${withval}" in
Glenn Morris's avatar
Glenn Morris committed
134
	    y | ye | yes )	val=gtk ;;
David J. MacKenzie's avatar
David J. MacKenzie committed
135 136
	    n | no )		val=no  ;;
	    l | lu | luc | luci | lucid )	val=lucid ;;
137
	    a | at | ath | athe | athen | athena )	val=athena ;;
David J. MacKenzie's avatar
David J. MacKenzie committed
138
	    m | mo | mot | moti | motif )	val=motif ;;
Jan Djärv's avatar
Jan Djärv committed
139
	    g | gt | gtk  )	val=gtk ;;
140
	    gtk3  )	val=gtk3 ;;
David J. MacKenzie's avatar
David J. MacKenzie committed
141
	    * )
142
AC_MSG_ERROR([`--with-x-toolkit=$withval' is invalid;
143 144
this option's value should be `yes', `no', `lucid', `athena', `motif', `gtk' or
`gtk3'.  `yes' and `gtk' are synonyms. `athena' and `lucid' are synonyms.])
David J. MacKenzie's avatar
David J. MacKenzie committed
145 146 147 148
	    ;;
	  esac
	  with_x_toolkit=$val
])
149

150 151 152 153 154 155 156 157
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])
158
OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
159
OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
160

161
OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
Miles Bader's avatar
Miles Bader committed
162 163 164
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])

165 166 167
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])
168
OPTION_DEFAULT_OFF([ns],[use nextstep (Cocoa or GNUstep) windowing system])
169 170

OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
171
OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
172
OPTION_DEFAULT_ON([gconf],[don't compile with GConf support])
Karel Klíc's avatar
Karel Klíc committed
173
OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
Ted Zlatanov's avatar
Ted Zlatanov committed
174
OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
175

176 177 178 179 180
## 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])

181 182 183 184 185 186 187 188 189
## 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)
190

191
AC_ARG_WITH([pkg-config-prog],dnl
192
[AS_HELP_STRING([--with-pkg-config-prog=PATH],
193
                  [path to pkg-config for finding GTK and librsvg])])
194 195 196 197 198
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
199

Glenn Morris's avatar
Glenn Morris committed
200 201 202
CRT_DIR=
AC_ARG_WITH([crt-dir],dnl
[AS_HELP_STRING([--with-crt-dir=DIR],[directory containing crtn.o etc.
Glenn Morris's avatar
Glenn Morris committed
203
The default is /usr/lib, or /usr/lib64 on some platforms.])])
Glenn Morris's avatar
Glenn Morris committed
204 205
CRT_DIR="${with_crt_dir}"

206 207 208 209 210 211 212
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

213
AC_ARG_ENABLE(ns-self-contained,
214 215 216
[AS_HELP_STRING([--disable-ns-self-contained],
                [disable self contained build under NeXTstep])],
   EN_NS_SELF_CONTAINED=$enableval,
217 218
   EN_NS_SELF_CONTAINED=yes)

219
AC_ARG_ENABLE(asserts,
220
[AS_HELP_STRING([--enable-asserts], [compile code with asserts enabled])],
221 222 223
      USE_XASSERTS=$enableval,
      USE_XASSERTS=no)

224
AC_ARG_ENABLE(maintainer-mode,
225 226 227
[AS_HELP_STRING([--enable-maintainer-mode],
                [enable make rules and dependencies not useful (and sometimes
		 confusing) to the casual installer])],
228 229 230 231 232 233 234 235 236
      USE_MAINTAINER_MODE=$enableval,
      USE_MAINTAINER_MODE=no)
if test $USE_MAINTAINER_MODE = yes; then
  MAINT=
else
  MAINT=#
fi
AC_SUBST(MAINT)

Lute Kamstra's avatar
Lute Kamstra committed
237
AC_ARG_ENABLE(locallisppath,
238 239 240
[AS_HELP_STRING([--enable-locallisppath=PATH],
                [directories Emacs should search for lisp files specific
		 to this site])],
Lute Kamstra's avatar
Lute Kamstra committed
241 242 243 244 245 246
if test "${enableval}" = "no"; then
  locallisppath=
elif test "${enableval}" != "yes"; then
  locallisppath=${enableval}
fi)

247
AC_ARG_ENABLE(checking,
248 249 250 251 252 253
[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])],
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
[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

311 312 313 314 315 316 317 318 319 320
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)


321
AC_ARG_ENABLE(profiling,
322 323 324
[AS_HELP_STRING([--enable-profiling],
		[build emacs with profiling support.
		 This might not work on all platforms])],
325 326 327 328 329 330 331 332
[ac_enable_profiling="${enableval}"],[])
if test x$ac_enable_profiling != x ; then
   PROFILING_CFLAGS="-DPROFILING=1 -pg"
   PROFILING_LDFLAGS="-pg"
else
   PROFILING_CFLAGS=
   PROFILING_LDFLAGS=
fi
333 334
AC_SUBST(PROFILING_CFLAGS)
AC_SUBST(PROFILING_LDFLAGS)
335

336 337 338 339 340 341 342
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])

David J. MacKenzie's avatar
David J. MacKenzie committed
343
#### Make srcdir absolute, if it isn't already.  It's important to
344
#### avoid running the path through pwd unnecessarily, since pwd can
David J. MacKenzie's avatar
David J. MacKenzie committed
345 346
#### give you automounter prefixes, which can go away.  We do all this
#### so Emacs can find its files when run uninstalled.
347 348
## Make sure CDPATH doesn't affect cd (in case PWD is relative).
unset CDPATH
David J. MacKenzie's avatar
David J. MacKenzie committed
349 350 351 352 353
case "${srcdir}" in
  /* ) ;;
  . )
    ## We may be able to use the $PWD environment variable to make this
    ## absolute.  But sometimes PWD is inaccurate.
354 355 356 357
    ## 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 ${PWD} ; sh -c pwd)`" = ".`pwd`"  ;
David J. MacKenzie's avatar
David J. MacKenzie committed
358 359 360 361 362 363 364 365 366 367 368 369
    then
      srcdir="$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
Dave Love's avatar
Dave Love committed
370
  AC_MSG_WARN([[The directory tree `${srcdir}' is being used
David J. MacKenzie's avatar
David J. MacKenzie committed
371 372 373
   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
Dave Love's avatar
Dave Love committed
374 375
   now do `make distclean' in ${srcdir},
   and then run $0 again.]])
David J. MacKenzie's avatar
David J. MacKenzie committed
376 377 378 379 380 381 382 383 384
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=$host
385
configuration=${host_alias-${build_alias-$host}}
David J. MacKenzie's avatar
David J. MacKenzie committed
386

Dave Love's avatar
Dave Love committed
387 388 389 390
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.
391 392 393 394
dnl
dnl Since Emacs can't find matching pairs of quotes, boundaries are
dnl indicated by comments.
dnl quotation begins
Dave Love's avatar
Dave Love committed
395
[
David J. MacKenzie's avatar
David J. MacKenzie committed
396 397 398 399 400 401

### 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
402
### based on the machine portion of the configuration name, and an s/*.h
David J. MacKenzie's avatar
David J. MacKenzie committed
403 404
### file based on the operating system portion.  However, it turns out
### that each m/*.h file is pretty manufacturer-specific - for
Dan Nicolaescu's avatar
Dan Nicolaescu committed
405 406
### example mips.h is MIPS
### So we basically have to have a special case for each
David J. MacKenzie's avatar
David J. MacKenzie committed
407 408 409 410 411 412 413 414 415 416 417
### 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
  ## FreeBSD ports
419
  *-*-freebsd* )
420 421
    opsys=freebsd
    case "${canonical}" in
422 423 424 425 426 427 428 429
      alpha*)           machine=alpha ;;
      amd64-*|x86_64-*) machine=amdx86-64 ;;
      arm*)             machine=arm ;;
      ia64-*)           machine=ia64 ;;
      i[3456]86-*)      machine=intel386 ;;
      powerpc-*)        machine=macppc ;;
      sparc-*)          machine=sparc ;;
      sparc64-*)        machine=sparc ;;
430 431 432
    esac
  ;;

433 434 435 436
  ## FreeBSD kernel + glibc based userland
  *-*-kfreebsd*gnu* )
    opsys=gnu-kfreebsd
    case "${canonical}" in
437 438 439 440 441 442 443
      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 ;;
444 445 446
    esac
  ;;

David J. MacKenzie's avatar
David J. MacKenzie committed
447 448 449 450
  ## NetBSD ports
  *-*-netbsd* )
    opsys=netbsd
    case "${canonical}" in
451 452 453 454 455 456 457 458 459 460 461
      alpha*)      machine=alpha ;;
      x86_64-*)    machine=amdx86-64 ;;
      arm-*)       machine=arm ;;
      hppa-*)      machine=hp800 ;;
      i[3456]86-*) machine=intel386 ;;
      m68k-*)      machine=m68k ;;
      powerpc-*)   machine=macppc ;;
      mips-*)      machine=mips ;;
      mipse[bl]-*) machine=mips ;;
      sparc*-)     machine=sparc ;;
      vax-*)       machine=vax ;;
David J. MacKenzie's avatar
David J. MacKenzie committed
462 463 464
    esac
  ;;

465 466 467 468
  ## OpenBSD ports
  *-*-openbsd* )
    opsys=openbsd
    case "${canonical}" in
469 470 471 472 473 474 475 476
      alpha*)    machine=alpha ;;
      x86_64-*)  machine=amdx86-64 ;;
      arm-*)     machine=arm ;;
      hppa-*)    machine=hp800 ;;
      i386-*)    machine=intel386 ;;
      powerpc-*) machine=macppc ;;
      sparc*)    machine=sparc ;;
      vax-*)     machine=vax ;;
477 478 479
    esac
  ;;

480
  alpha*-*-linux-gnu* )
481
    machine=alpha opsys=gnu-linux
482 483
  ;;

484 485 486 487
  arm*-*-linux-gnu* )
    machine=arm opsys=gnu-linux
  ;;

488 489 490 491
  ## Apple Darwin / Mac OS X
  *-apple-darwin* )
    case "${canonical}" in
      i[3456]86-* )  machine=intel386 ;;
492
      powerpc-* )    machine=macppc ;;
493
      x86_64-* )     machine=amdx86-64 ;;
494 495 496 497 498 499 500 501 502 503 504 505 506
      * )            unported=yes ;;
    esac
    opsys=darwin
    # Define CPP as follows to make autoconf work correctly.
    CPP="${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
  ;;

507 508 509 510 511 512 513 514 515
  ## HP 9000 series 700 and 800, running HP/UX
  hppa*-hp-hpux10.2* )
    machine=hp800 opsys=hpux10-20
  ;;
  hppa*-hp-hpux1[1-9]* )
    machine=hp800 opsys=hpux11
    CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
  ;;

516 517 518 519
  hppa*-*-linux-gnu* )
    machine=hp800 opsys=gnu-linux
  ;;

David J. MacKenzie's avatar
David J. MacKenzie committed
520
  ## IBM machines
Dave Love's avatar
Dave Love committed
521
  s390-*-linux-gnu* )
522 523
    machine=ibms390 opsys=gnu-linux
  ;;
524 525
  s390x-*-linux-gnu* )
    machine=ibms390x opsys=gnu-linux
526
  ;;
527
  rs6000-ibm-aix4.[23]* )
528 529
    machine=ibmrs6000 opsys=aix4-2
  ;;
530
  powerpc-ibm-aix4.[23]*  )
531 532
    machine=ibmrs6000 opsys=aix4-2
  ;;
533
  rs6000-ibm-aix[56]* )
Eli Zaretskii's avatar
Eli Zaretskii committed
534 535
    machine=ibmrs6000 opsys=aix4-2
  ;;
536
  powerpc-ibm-aix[56]*  )
537 538
    machine=ibmrs6000 opsys=aix4-2
  ;;
David J. MacKenzie's avatar
David J. MacKenzie committed
539

540 541 542 543 544
  ## Macintosh PowerPC
  powerpc*-*-linux-gnu* )
    machine=macppc opsys=gnu-linux
  ;;

David J. MacKenzie's avatar
David J. MacKenzie committed
545 546
  ## Silicon Graphics machines
  ## Iris 4D
Karl Heuer's avatar
Karl Heuer committed
547 548
  mips-sgi-irix6.5 )
    machine=iris4d opsys=irix6-5
549 550 551 552
    # 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"
553
    NON_GCC_TEST_OPTIONS="-D_LANGUAGE_C"
Karl Heuer's avatar
Karl Heuer committed
554
  ;;
David J. MacKenzie's avatar
David J. MacKenzie committed
555 556

  ## Suns
Dave Love's avatar
Dave Love committed
557
  sparc-*-linux-gnu* | sparc64-*-linux-gnu* )
558
    machine=sparc opsys=gnu-linux
Karl Heuer's avatar
Karl Heuer committed
559 560
  ;;

561
  *-sun-solaris* \
Dan Nicolaescu's avatar
Dan Nicolaescu committed
562
    | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
563
    | x86_64-*-solaris2*    | x86_64-*-sunos5*)
David J. MacKenzie's avatar
David J. MacKenzie committed
564
    case "${canonical}" in
565
      i[3456]86-*-* )     machine=intel386 ;;
566
      amd64-*-*|x86_64-*-*)	machine=amdx86-64 ;;
David J. MacKenzie's avatar
David J. MacKenzie committed
567 568 569 570
      sparc* )		machine=sparc ;;
      * )		unported=yes ;;
    esac
    case "${canonical}" in
571 572 573 574 575
      *-sunos5.6* | *-solaris2.6* )
		opsys=sol2-6
		NON_GNU_CPP=/usr/ccs/lib/cpp
		RANLIB="ar -ts"
		;;
576
      *-sunos5.[7-9]* | *-solaris2.[7-9]* )
577
		opsys=sol2-6
578 579
		emacs_check_sunpro_c=yes
		NON_GNU_CPP=/usr/ccs/lib/cpp
Dan Nicolaescu's avatar
Dan Nicolaescu committed
580
		;;
581 582 583 584
      *-sunos5* | *-solaris* )
		opsys=sol2-10
		emacs_check_sunpro_c=yes
		NON_GNU_CPP=/usr/ccs/lib/cpp
David J. MacKenzie's avatar
David J. MacKenzie committed
585 586
		;;
    esac
587 588 589 590 591 592 593 594 595 596 597
    ## 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
David J. MacKenzie's avatar
David J. MacKenzie committed
598 599
  ;;

600 601 602 603 604
  ## IA-64
  ia64*-*-linux* )
    machine=ia64 opsys=gnu-linux
  ;;

605
  ## Intel 386 machines where we don't care about the manufacturer.
606
  i[3456]86-*-* )
David J. MacKenzie's avatar
David J. MacKenzie committed
607 608
    machine=intel386
    case "${canonical}" in
Juanma Barranquero's avatar
Juanma Barranquero committed
609
      *-cygwin )                opsys=cygwin ;;
610
      *-darwin* )               opsys=darwin
611 612
                                CPP="${CC-cc} -E -no-cpp-precomp"
 				;;
613
      *-linux-gnu* )		opsys=gnu-linux ;;
614
      *-sysv4.2uw* )	  	opsys=unixware; NON_GNU_CPP=/lib/cpp ;;
615 616
      *-sysv5uw* )	  	opsys=unixware; NON_GNU_CPP=/lib/cpp ;;
      *-sysv5OpenUNIX* )  	opsys=unixware; NON_GNU_CPP=/lib/cpp ;;
David J. MacKenzie's avatar
David J. MacKenzie committed
617 618 619 620
      ## Otherwise, we'll fall through to the generic opsys code at the bottom.
    esac
  ;;

621
  ## m68k Linux-based GNU system
622 623
  m68k-*-linux-gnu* )
    machine=m68k opsys=gnu-linux
624 625
  ;;

626
  ## Mips Linux-based GNU system
627 628
  mips-*-linux-gnu* | mipsel-*-linux-gnu* \
    | mips64-*-linux-gnu* | mips64el-*-linux-gnu* )
629 630 631
    machine=mips opsys=gnu-linux
  ;;

Andreas Schwab's avatar
Andreas Schwab committed
632 633
  ## AMD x86-64 Linux-based GNU system
  x86_64-*-linux-gnu* )
634
    machine=amdx86-64 opsys=gnu-linux
Andreas Schwab's avatar
Andreas Schwab committed
635 636
  ;;

637
  ## Tensilica Xtensa Linux-based GNU system
Miles Bader's avatar
Miles Bader committed
638
  xtensa*-*-linux-gnu* )
639 640 641
    machine=xtensa opsys=gnu-linux
    ;;

642 643 644 645 646
  ## SuperH Linux-based GNU system
  sh[34]*-*-linux-gnu* )
    machine=sh3 opsys=gnu-linux
  ;;

David J. MacKenzie's avatar
David J. MacKenzie committed
647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666
  * )
    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

Dave Love's avatar
Dave Love committed
667
]
668
dnl quotation ends
David J. MacKenzie's avatar
David J. MacKenzie committed
669 670

if test $unported = yes; then
Dave Love's avatar
Dave Love committed
671 672
  AC_MSG_ERROR([Emacs hasn't been ported to `${canonical}' systems.
Check `etc/MACHINES' for recognized configuration names.])
David J. MacKenzie's avatar
David J. MacKenzie committed
673 674 675 676 677 678 679 680 681
fi

machfile="m/${machine}.h"
opsysfile="s/${opsys}.h"


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

682 683 684
# Save the value of CFLAGS that the user specified.
SPECIFIED_CFLAGS="$CFLAGS"

685
dnl Sets GCC=yes if using gcc.
Andreas Schwab's avatar
Andreas Schwab committed
686
AC_PROG_CC
David J. MacKenzie's avatar
David J. MacKenzie committed
687 688 689 690 691 692

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

693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710
## 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

David J. MacKenzie's avatar
David J. MacKenzie committed
711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727
#### 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

728 729 730 731
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"
732
fi
David J. MacKenzie's avatar
David J. MacKenzie committed
733

734
dnl checks for Unix variants
735
AC_USE_SYSTEM_EXTENSIONS
736

737 738 739 740 741 742 743 744 745 746 747 748 749
### Use -Wno-pointer-sign if the compiler supports it
AC_MSG_CHECKING([whether gcc understands -Wno-pointer-sign])
SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wno-pointer-sign"
AC_TRY_COMPILE([], [], has_option=yes, has_option=no,)
if test $has_option = yes; then
   C_WARNINGS_SWITCH="-Wno-pointer-sign $C_WARNINGS_SWITCH"
fi
AC_MSG_RESULT($has_option)
CFLAGS="$SAVE_CFLAGS"
unset has_option
unset SAVE_CFLAGS

750 751 752 753 754 755 756 757 758 759 760 761 762
### 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

763 764 765 766 767 768 769 770 771 772 773 774 775
### 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
776 777 778 779 780 781 782 783 784 785 786 787 788 789

### 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

790
AC_SUBST(C_WARNINGS_SWITCH)
791 792


Dave Love's avatar
Dave Love committed
793
#### Some other nice autoconf tests.
David J. MacKenzie's avatar
David J. MacKenzie committed
794 795 796 797

dnl checks for programs
AC_PROG_CPP
AC_PROG_INSTALL
798 799 800
if test "x$RANLIB" = x; then
  AC_PROG_RANLIB
fi
801 802 803 804 805 806 807 808 809 810 811 812 813 814

## 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

David Kastrup's avatar
David Kastrup committed
815 816 817
AC_PATH_PROG(INSTALL_INFO, install-info)
AC_PATH_PROG(INSTALL_INFO, install-info,, /usr/sbin)
AC_PATH_PROG(INSTALL_INFO, install-info,:, /sbin)
818 819
dnl Don't use GZIP, which is used by gzip for additional parameters.
AC_PATH_PROG(GZIP_PROG, gzip)
David J. MacKenzie's avatar
David J. MacKenzie committed
820

821

822
## Need makeinfo >= 4.6 (?) to build the manuals.
823
AC_PATH_PROG(MAKEINFO, makeinfo, no)
824
dnl By this stage, configure has already checked for egrep and set EGREP,
825 826
dnl or exited with an error if no egrep was found.
if test "$MAKEINFO" != "no" && \
Glenn Morris's avatar
Glenn Morris committed
827
  test x"`$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
828
   MAKEINFO=no
829 830
fi

831 832 833 834
## 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).
835 836
## In a Bazaar checkout on the other hand, the manuals are not included.
## So makeinfo is a requirement to build from Bazaar, and configure
837 838
## should test for it as it does for any other build requirement.
## We use the presence of $srcdir/info/emacs to distinguish a release,
839
## with pre-built manuals, from a Bazaar checkout.
840 841 842
if test "$MAKEINFO" = "no"; then
  if test "x${with_makeinfo}" = "xno"; then
    MAKEINFO=off
843
  elif test ! -e $srcdir/info/emacs; then
844 845
    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.
846
Either install a suitable version of makeinfo, or re-run configure
847 848
with the `--without-makeinfo' option to build without the manuals.] )
  fi
849
fi
850

851 852 853 854 855 856 857 858 859 860 861 862
dnl Add our options to ac_link now, after it is set up.

if test x$GCC = xyes && test "x$GCC_LINK_TEST_OPTIONS" != x
then
  ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
fi

if test x$GCC = x && test "x$NON_GCC_LINK_TEST_OPTIONS" != x
then
  ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
fi

863 864 865
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.)
Richard M. Stallman's avatar
Richard M. Stallman committed
866 867 868
dnl Treat GCC specially since it just gives a non-fatal `unrecognized option'
dnl if not built to support GNU ld.

869
late_LDFLAGS=$LDFLAGS
870
if test "$GCC" = yes; then
Richard M. Stallman's avatar
Richard M. Stallman committed
871 872 873 874
  LDFLAGS="$LDFLAGS -Wl,-znocombreloc"
else
  LDFLAGS="$LDFLAGS -znocombreloc"
fi
875

Lute Kamstra's avatar
Lute Kamstra committed
876
AC_MSG_CHECKING([for -znocombreloc])
877 878 879 880 881
AC_LINK_IFELSE([main(){return 0;}],
  [AC_MSG_RESULT(yes)],
  LDFLAGS=$late_LDFLAGS
  [AC_MSG_RESULT(no)])

882

883 884 885 886
# The value of CPP is a quoted variable reference, so we need to do this
# to get its actual value...
CPP=`eval "echo $CPP"`

887

888 889 890 891 892 893 894 895 896 897 898 899
dnl Not used by any currently supported platform.
dnl The function dump-emacs will not be defined and temacs will do
dnl (load "loadup") automatically unless told otherwise.
CANNOT_DUMP=no
case "$opsys" in
  your-opsys-here)
   CANNOT_DUMP=yes
   AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
  ;;
esac
AC_SUBST(CANNOT_DUMP)

900

901 902
UNEXEC_OBJ=unexelf.o
case "$opsys" in
903
  # MSDOS uses unexcoff.o
904
  # MSWindows uses unexw32.o
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
  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).
   # 
   # 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
   # 
   # 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
932

933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960
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...
   test "$machine" = "mips" && LD_SWITCH_SYSTEM="-G 0"
   ;;

  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"

961 962 963 964 965 966 967 968 969 970
## 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.
971 972 973 974 975
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
976

977 978 979 980 981 982 983 984 985 986 987 988 989 990 991

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
992 993
  else
    UNEXEC_OBJ=unexalpha.o 
994 995 996 997
  fi
fi
AC_SUBST(C_SWITCH_MACHINE)

998
AC_SUBST(UNEXEC_OBJ)
999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010

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)


1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026
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" ;;

  sol2*) LIBS_SYSTEM="-lsocket -lnsl -lkstat" ;;

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

1027 1028 1029 1030 1031 1032

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

if test x"${OVERRIDE_CPPFLAGS}" != x; then
  CPPFLAGS="${OVERRIDE_CPPFLAGS}"
else
1033
  CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1034 1035
fi

1036 1037 1038
dnl For AC_FUNC_GETLOADAVG, at least:
AC_CONFIG_LIBOBJ_DIR(src)

Dave Love's avatar
Dave Love committed
1039 1040 1041
dnl Do this early because it can frob feature test macros for Unix-98 &c.
AC_SYS_LARGEFILE

1042

Glenn Morris's avatar
Glenn Morris committed
1043 1044
## If user specified a crt-dir, use that unconditionally.
if test "X$CRT_DIR" = "X"; then
Glenn Morris's avatar
Glenn Morris committed
1045

Glenn Morris's avatar
Glenn Morris committed
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
  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.])

1075
fi
Glenn Morris's avatar
Glenn Morris committed
1076 1077 1078

AC_SUBST(CRT_DIR)

1079 1080 1081 1082 1083 1084 1085
LIB_MATH=-lm
LIB_STANDARD=
START_FILES=

case $opsys in
  cygwin )
    LIB_MATH=
1086
    START_FILES='pre-crt0.o'
1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105
    ;;
  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 )
1106
    if test -f $CRT_DIR/crti.o; then
1107 1108 1109 1110 1111 1112 1113
	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
    ;;
1114 1115
esac

1116 1117
AC_SUBST(LIB_MATH)
AC_SUBST(START_FILES)
1118

1119
dnl This function definition taken from Gnome 2.0
1120 1121 1122 1123 1124 1125
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

1126
  AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
1127 1128 1129 1130 1131 1132 1133 1134 1135

  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)

1136
        if $PKG_CONFIG --exists "$2" 2>&AS_MESSAGE_LOG_FD; then
1137 1138 1139 1140
            AC_MSG_RESULT(yes)
            succeeded=yes

            AC_MSG_CHECKING($1_CFLAGS)
1141
            $1_CFLAGS=`$PKG_CONFIG --cflags "$2"|sed -e 's,///*,/,g'`
1142 1143 1144
            AC_MSG_RESULT($$1_CFLAGS)

            AC_MSG_CHECKING($1_LIBS)
1145
            $1_LIBS=`$PKG_CONFIG --libs "$2"|sed -e 's,///*,/,g'`
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
            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
])


Pavel Janík's avatar
Pavel Janík committed
1173 1174
if test "${with_sound}" != "no"; then
  # Sound support for GNU/Linux and the free BSDs.
1175 1176
  AC_CHECK_HEADERS(machine/soundcard.h sys/soundcard.h soundcard.h, 
    have_sound_header=yes)
Pavel Janík's avatar
Pavel Janík committed
1177 1178 1179
  # Emulation library used on NetBSD.
  AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
  AC_SUBST(LIBSOUND)
1180 1181 1182 1183 1184

  ALSA_REQUIRED=1.0.0
  ALSA_MODULES="alsa >= $ALSA_REQUIRED"
  PKG_CHECK_MODULES(ALSA, $ALSA_MODULES, HAVE_ALSA=yes, HAVE_ALSA=no)
  if test $HAVE_ALSA = yes; then
1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204
    SAVE_CFLAGS="$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"
1205 1206 1207 1208
    LIBSOUND="$LIBSOUND $ALSA_LIBS"
    CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
    AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
  fi
1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221

  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

1222
  AC_SUBST(CFLAGS_SOUND)
Pavel Janík's avatar
Pavel Janík committed
1223
fi
Gerd Moellmann's avatar
Gerd Moellmann committed
1224

David J. MacKenzie's avatar
David J. MacKenzie committed
1225
dnl checks for header files