### from the file `./configure.in'.
### To rebuild it, execute the command
### autoconf
-### in the this directory. You must have autoconf version 2.12 or later.
+### in the this directory. You must have autoconf version 2.13 or later.
### This file is part of XEmacs.
dnl We use the m4 quoting characters [ ] (as established by the
dnl autoconf system), so quote them like this: [[foo]]
-AC_PREREQ(2.12)dnl
+AC_PREREQ(2.13)dnl
dnl Redefine some standard autoconf macros
dnl here is how XEmacs is different:
dnl - no cache file
m68*-sony-* ) machine=news ;;
mips-sony-* ) machine=news-risc ;;
clipper-* ) machine=clipper ;;
- arm-* ) machine=arm ;;
- armv[34][lb]-* ) machine=arm ;;
+ arm* ) machine=arm ;;
ns32k-* ) machine=ns32000 ;;
esac
fi
fi
+dnl Search for GCC specific build problems we know about
+if test "$GCC" = "yes"; then
+AC_MSG_CHECKING(for buggy gcc versions)
+GCC_VERSION=`$CC --version`
+case `uname -s`:`uname -m`:$GCC_VERSION in
+ dnl egcs 2.90.21 (egcs-1.00 release)
+ dnl egcs 2.90.29 (egcs-1.0.3 release)
+ *:sun4*:2.8.1|*:sun4*:egcs-2.90.*)
+ dnl Don't use -O2 with gcc 2.8.1 and egcs 1.0 under SPARC architectures
+ dnl without also using `-fno-schedule-insns'.
+ case "$CFLAGS" in
+ *-O2*|*-O3*)
+ case "$CFLAGS" in
+ *-fno-schedule-insns*) ;;
+ *)
+ AC_MSG_RESULT(Yes)
+ AC_MSG_WARN(Don't use -O2 with gcc 2.8.1 and egcs 1.0 under SPARC architectures)
+ AC_MSG_WARN(without also using -fno-schedule-insns.)
+ AC_MSG_ERROR(Aborting due to known problem)
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+ dnl egcs-2.91.57 (egcs-1.1 release)
+ dnl egcs-2.91.66 (egcs-1.1.2 release)
+ Linux:alpha:egcs-2.91.*)
+ AC_MSG_RESULT(Yes)
+ AC_MSG_WARN(There have been reports of egcs-1.1 not compiling XEmacs correctly on)
+ AC_MSG_WARN(Alpha Linux. There have also been reports that egcs-1.0.3a is O.K.)
+ AC_MSG_ERROR(Aborting due to known problem)
+ ;;
+ *:i*86*:2.7.2*)
+ case "$GCC_VERSION" in
+ 2.7.2)
+ case "$CFLAGS" in
+ *-O2*|*-O3*)
+ case "$CFLAGS" in
+ *-fno-strength-reduce*) ;;
+ *)
+ AC_MSG_RESULT(Yes)
+ AC_MSG_WARN(Don't use -O2 with gcc 2.7.2 under Intel/XXX without also using)
+ AC_MSG_WARN(-fno-strength-reduce.)
+ AC_MSG_ERROR(Aborting due to known problem)
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+ esac
+ case "$CFLAGS" in
+ *-fno-caller-saves*) ;;
+ *)
+ AC_MSG_RESULT(Yes)
+ AC_MSG_WARN(Don't use -O2 with gcc 2.7.2 under Intel/XXX without also using)
+ AC_MSG_WARN(-fno-caller-saves.)
+ AC_MSG_ERROR(Aborting due to known problem)
+ ;;
+ esac
+ ;;
+esac
+fi
+AC_MSG_RESULT(No)
+
dnl Inform compiler that certain flags are meant for the linker
dnl XE_PROTECT_LINKER_FLAGS(shell_var)
define([XE_PROTECT_LINKER_FLAGS], [
AC_PROG_YACC
dnl checks for header files
-AC_CHECK_HEADERS(mach/mach.h sys/stropts.h sys/timeb.h sys/time.h unistd.h)
-AC_CHECK_HEADERS(utime.h locale.h libgen.h fcntl.h ulimit.h cygwin/version.h)
-AC_CHECK_HEADERS(kstat.h sys/pstat.h inttypes.h sys/un.h a.out.h)
+AC_CHECK_HEADERS(dnl
+ a.out.h dnl
+ cygwin/version.h dnl
+ fcntl.h dnl
+ inttypes.h dnl
+ libgen.h dnl
+ locale.h dnl
+ mach/mach.h dnl
+ sys/param.h dnl
+ sys/pstat.h dnl
+ sys/stropts.h dnl
+ sys/time.h dnl
+ sys/timeb.h dnl
+ sys/un.h dnl
+ kstat.h dnl
+ ulimit.h dnl
+ unistd.h dnl
+ utime.h dnl
+)
AC_HEADER_SYS_WAIT
AC_HEADER_STDC
AC_HEADER_TIME
fi
dnl Link with "-z ignore" on Solaris if supported
-if test "$opsys" = "sol2" -a "$os_release" -ge 56; then
- AC_MSG_CHECKING(for \"-z ignore\" linker flag)
- case "`ld -h 2>&1`" in
- *-z\ ignore\|record* ) AC_MSG_RESULT(yes)
- XE_PREPEND(-z ignore, ld_switch_site) ;;
- *) AC_MSG_RESULT(no) ;;
- esac
+if test "$opsys" = "sol2"; then
+ if test "$os_release" -ge 56; then
+ AC_MSG_CHECKING(for \"-z ignore\" linker flag)
+ case "`ld -h 2>&1`" in
+ *-z\ ignore\|record* ) AC_MSG_RESULT(yes)
+ XE_PREPEND(-z ignore, ld_switch_site) ;;
+ *) AC_MSG_RESULT(no) ;;
+ esac
+ fi
fi
dnl ----------------------