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* configure.in (OTHER_OBJ): Always include vm-limit.o on Cygwin.
Elsewhere, maybe include it.
* src/Makefile.in (vmlimitobj) [!SYSTEM_MALLOC]: New variable.
(OTHER_OBJ): Define as a separate variable, for clarity.

* configure: Regenerate.

* configure.in (TOOLKIT_LIBW) [HAVE_GTK]: Set to $GTK_LIBS.
(OLDXMENU, LIBXMENU): New output variables.
* src/Makefile.in (OLDXMENU, LIBXMENU) [HAVE_MENUS]:
Set with configure, not cpp.
(LIBW): Remove, replace with $TOOLKIT_LIBW.

* configure.in (OTHER_OBJ): New output variable.
* src/Makefile.in (mallocobj): Remove.
(otherobj): Simplify using @OTHER_OBJ@.

* src/Makefile.in (dispnew.o, frame.o, fringe.o, font.o, fontset.o)
(keyboard.o, window.o, xdisp.o, xfaces.o, menu.o):
Don't bother making nsgui.h dependency platform-specific.

* process.c (read_process_output, exec_sentinel): Don't burp if the
sentinel/filter kills the current buffer.

Fixes: debbugs:6060

* eval.c (Fautoload): Set doc to a unique number rather than to 0.
Remove unused var `args'.
* lisp.h (XSETCARFASTINT, XSETCDRFASTINT): Remove.
(LOADHIST_ATTACH): Wrap with do...while to avoid surprises for callers.
* doc.c (store_function_docstring): Use XSETCAR.

* src/Makefile.in (BASE_WINDOW_SUPPORT, X_WINDOW_SUPPORT): New variables.
(WINDOW_SUPPORT) [HAVE_WINDOW_SYSTEM]: Use them.

* configure.in (CYGWIN_OBJ): New output variable.
* src/Makefile.in (CYGWIN_OBJ): Set with configure, not cpp.

* configure.in (GPM_MOUSE_SUPPORT): New output variable.
* src/Makefile.in (GPM_MOUSE_SUPPORT): New, set by configure.
(MOUSE_SUPPORT) [!HAVE_MOUSE]: Use $GPM_MOUSE_SUPPORT.

* configure.in (FONT_OBJ): New output variable.
* src/Makefile.in (FONT_OBJ): New, set by configure.
(FONT_DRIVERS): Use $FONT_OBJ.

* configure.in (LIBXMU): New output variable.

* src/Makefile.in (LIBXMU): Set with configure, not cpp.
* src/s/aix4-2.h (LIBXMU):
* src/s/hpux10-20.h (LIBXMU):
Remove definition, now set in configure.

* configure.in (NS_OBJ, NS_SUPPORT): New output variables.
* src/Makefile.in (NS_OBJ, NS_SUPPORT): Set with configure, not cpp.

* configure.in (LIBXTR6): New output variable.  Move unixware special
case here from src/s/unixware.h.

* src/Makefile.in (LIBXTR6): Set with configure, not cpp.
* src/s/unixware.h (NEED_LIBW): Remove definition.

* admin/CPP-DEFINES: Remove NEED_LIBW.

* configure.in (LUCID_LIBW, MOTIF_LIBW): No longer substitute in Makefiles.
(TOOLKIT_LIBW): New output variable, replacing LUCID_LIBW/MOTIF_LIBW.

* src/Makefile.in (LUCID_LIBW, MOTIF_LIBW): Remove, replacing by...
(TOOLKIT_LIBW): New, set by configure.
(@X_TOOLKIT_TYPE@): No longer define it.

* configure.in (HAVE_MOTIF_2_1): Remove unused variable.
(LIBXP): No longer substitute in Makefiles.
(MOTIF_LIBW): New output variable.  Move system-specific settings here
from src/s files.

* src/Makefile.in (LIBXP): Remove, since included in MOTIF_LIBW.
(MOTIF_LIBW): Set with configure, not cpp.
* s/aix4-2.h (LIB_MOTIF):
* s/gnu-linux.h (LIB_MOTIF):
* s/unixware.h (LIB_MOTIF): Move to configure.in.

* admin/CPP-DEFINES: Remove LIB_MOTIF.

* Makefile.in (C_SWITCH_SYSTEM, C_SWITCH_MACHINE, C_SWITCH_X_SITE): Remove
definitions and undefs.  Inline definitions in the only user.
(ALL_CFLAGS): Substitute C_SWITCH_X_SYSTEM using autoconf.

* Makefile.in (C_SWITCH_X_SYSTEM): Define using autoconf.

* Makefile.in (C_SWITCH_X_SYSTEM): Define using autoconf.

* configure.in (C_SWITCH_X_SYSTEM): Define using autoconf, not cpp.

* Makefile.in (LIB_X11_LIB): Remove, inline in the only user.
(obj): Use autoconf for unexec instead of cpp.

* configure.in (LIB_X11_LIB): Remove, inline in the only user.
(unexec): Define unconditionally, all platforms define
UNEXEC.  AC_SUBST it.
(UNEXEC_SRC): Remove, unused.

* configure.in (--with-crt-dir): Doc fix (now valid for all platforms).
(CRT_DIR): On (powerpc64|sparc64)-*-linux-gnu*, default to /usr/lib64.
On hpux10-20, default to /lib.

* src/m/amdx86-64.h (START_FILES, LIB_STANDARD): Change the logic around,
since the defaults (set by the system file) are fine in most cases.
[GNU_LINUX, __OpenBSD__, __NetBSD__, __APPLE__]: Remove sections.
* src/m/ibms390x.h (START_FILES, LIB_STANDARD):
* src/m/macppc.h (START_FILES, LIB_STANDARD) [GNU_LINUX]:
* src/m/sparc.h (START_FILES, LIB_STANDARD) [__linux__]:
Remove definitions, since they are set correctly in s/gnu-linux.h.
* src/s/freebsd.h (START_FILES, LIB_STANDARD):
* src/s/gnu-linux.h (START_FILES, LIB_STANDARD):
* src/s/hpux10-20.h (START_FILES):
* src/s/netbsd.h (START_FILES, LIB_STANDARD, START_FILES_1, END_FILES_1):
Use $CRT_DIR in place of fixed /usr/lib, /lib directories.

* src/Makefile.in: Comment.

* configure.in (LUCID_LIBW, LIBXP, WIDGET_OBJ): New output variables.

* src/Makefile.in (LIBXP, LUCID_LIBW, WIDGET_OBJ): Set via configure.
(MOTIF_LIBW): Use $LIBXP.
(otherobj): Use $WIDGET_OBJ.

* Makefile.in (LIBS_MACHINE): Remove all uses, unused.
* configure.in (LIBS_MACHINE): Remove, unused.

* s/darwin.h (LIB_MATH): Do not define here, move to configure.
* s/cygwin.h (LIB_MATH): Likewise.
* Makefile.in (LIB_MATH): Do not define with cpp.
(LIBES): Use autoconf for LIB_MATH.

* configure.in (LIB_MATH): New output variable.  Set it for some systems.

* fns.c (concat2, concat3, nconc2):
* eval.c (apply1, call1, call2, call3, call4, call5, call6)
(call7): Remove NO_ARG_ARRAY usage, assume it's always true.
* m/xtensa.h (NO_ARG_ARRAY):
* m/template.h (NO_ARG_ARRAY):
* m/sparc.h (NO_ARG_ARRAY):
* m/sh3.h (NO_ARG_ARRAY):
* m/mips.h (NO_ARG_ARRAY):
* m/macppc.h (NO_ARG_ARRAY):
* m/iris4d.h (NO_ARG_ARRAY):
* m/intel386.h (NO_ARG_ARRAY):
* m/ibms390x.h (NO_ARG_ARRAY):
* m/ibms390.h (NO_ARG_ARRAY):
* m/ibmrs6000.h (NO_ARG_ARRAY):
* m/ia64.h (NO_ARG_ARRAY):
* m/hp800.h (NO_ARG_ARRAY):
* m/arm.h (NO_ARG_ARRAY):
* m/amdx86-64.h (NO_ARG_ARRAY):
* m/alpha.h (NO_ARG_ARRAY): Remove definition.

 xdisp.c (iterate_out_of_display_property): New function, body from pop_it.
 (pop_it): Use it.

 xdisp.c (display_line): Don't assume 2nd call to
 get_next_display_element cannot return zero.

* m/amdx86-64.h (START_FILES, LIB_STANDARD) [__OpenBSD__]:
For clarity, revert to using fixed /usr/lib rather than $CRT_DIR.
(START_FILES, LIB_STANDARD) [__FreeBSD__]: Merge into the generic case,
since CRT_DIR defaults to /usr/lib.  Suggested by Dan Nicolaescu.

 xdisp.c (display_line): Use `reseat' instead of `reseat_1', and
 use `get_next_display_element' and `set_iterator_to_next' to
 advance to the next character, when looking for the character that
 begins the next row.

 .gdbinit: Add a "set Fmake_symbol" line to force GDB load the
 definition of "struct Lisp_Symbol".

 .gdbinit: Add a "set Fmake_symbol" line to force GDB to load the
 definition of "struct Lisp_Symbol".

* configure.in (CRT_DIR): New output variable.
(--with-crt-dir): New option.  (Bug#5655)
(HAVE_LIB64_DIR): Remove.

* src/Makefile.in (CRT_DIR): New variable, set by configure.
* src/m/amdx86-64.h, m/ibms390x.h (START_FILES, LIB_STANDARD):
Use $CRT_DIR rather than HAVE_LIB64_DIR.  (Bug#5655)

* Makefile.in (ALL_CFLAGS): Remove C_SWITCH_X_MACHINE, unused.

* s/freebsd.h (C_SWITCH_SYSTEM):
* s/hpux10-20.h (C_SWITCH_X_SYSTEM, LD_SWITCH_X_DEFAULT):
* s/netbsd.h (C_SWITCH_SYSTEM):
* s/openbsd.h (LD_SWITCH_X_DEFAULT): Remove, configure takes care
of these.

* m/intel386.h (CRT0_DUMMIES): Remove, inline value in the only
user: ecrt0.c.
(SOLARIS2): Remove LOAD_AVE_TYPE, LOAD_AVE_CVT, LIBS_MACHINE, unused.
(USG5_4): Move LOAD_AVE_TYPE, LOAD_AVE_CVT, FSCALE definitions to
the only user: s/unixware.h.
* ecrt0.c: Remove #ifndef static.  Inline CRT0_DUMMIES definition
from m/intel386.h.
* s/unixware.h (LOAD_AVE_TYPE, LOAD_AVE_CVT, FSCALE): Definitions
moved here from m/intel386.h.