Revision: miles@gnu.org--gnu-2004/emacs--unicode--0--patch-44

[gnu-emacs] / configure.in

diff --git a/configure.in b/configure.in
index 8663ce9765c5a62cd6c91797aa8abb18821154e5..52c35bb2b097db7c44546ec39f06cfb7da257cb2 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -3,7 +3,7 @@ dnl To rebuild the `configure' script from this, execute the command
 dnl    autoconf
 dnl in the directory containing this script.
 dnl
-dnl  Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2003
+dnl  Copyright (C) 1994, 95, 96, 1999, 2000, 01, 02, 03, 2004
 dnl  Free Software Foundation, Inc.
 dnl
 dnl  This file is part of GNU Emacs.
@@ -170,15 +170,6 @@ if test `pwd` != `(cd ${srcdir} && pwd)` \
    use GNU make.  If you do not have GNU make, then you must
    now do `make distclean' in ${srcdir},
    and then run $0 again.]])
-
-[extrasub='/^VPATH[     ]*=/c\
-vpath %.c $(srcdir)\
-vpath %.h $(srcdir)\
-vpath %.y $(srcdir)\
-vpath %.l $(srcdir)\
-vpath %.s $(srcdir)\
-vpath %.in $(srcdir)\
-vpath %.texi $(srcdir)']
 fi
 
 #### Given the configuration name, set machfile and opsysfile to the
@@ -1135,6 +1126,12 @@ dnl see the `changequote' comment above.
     machine=powermac 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
   ;;
 
   ## AMD x86-64 Linux-based GNU system
@@ -1267,9 +1264,39 @@ then
   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=$LDFLAGS
+if test "$GCC" = yes; then
+  LDFLAGS="$LDFLAGS -Wl,-znocombreloc"
+else
+  LDFLAGS="$LDFLAGS -znocombreloc"
+fi
+
+AC_MSG_CHECKING([For -znocombreloc])
+AC_LINK_IFELSE([main(){return 0;}],
+  [AC_MSG_RESULT(yes)],
+  LDFLAGS=$late_LDFLAGS
+  [AC_MSG_RESULT(no)])
+
 dnl checks for Unix variants
 AC_AIX
 
+dnl check if exec-shield is present.
+AC_CHECK_FILE(/proc/sys/kernel/exec-shield, emacs_cv_execshield=1,
+                                           emacs_cv_execshield=0)
+if test "$emacs_cv_execshield" = 1; then
+   AC_PATH_PROG(SETARCH, setarch, no)
+   AC_SUBST(SETARCH)
+   if test "$setarch" != no; then
+     AC_DEFINE(HAVE_EXECSHIELD, 1, [Define to 1 if this OS has exec shield.])
+   fi
+fi
+
 #### Extract some information from the operating system and machine files.
 
 AC_CHECKING([the machine- and system-dependent files to find out
@@ -2326,7 +2353,7 @@ utimes setrlimit setpgid getcwd getwd shutdown getaddrinfo \
 __fpending mblen mbrlen mbsinit strsignal setitimer ualarm index rindex \
 sendto recvfrom getsockopt setsockopt getsockname getpeername \
 gai_strerror mkstemp getline getdelim mremap memmove fsync bzero \
-memset memcmp memmove difftime memcpy mempcpy mblen mbrlen posix_memalign)
+memset memcmp difftime memcpy mempcpy mblen mbrlen posix_memalign)
 
 AC_CHECK_HEADERS(sys/un.h)