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

[gnu-emacs] / configure.in

diff --git a/configure.in b/configure.in
index b7318b8f8054e3725223a72ac9ae11ba6fc92a9d..52c35bb2b097db7c44546ec39f06cfb7da257cb2 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -1286,6 +1286,17 @@ AC_LINK_IFELSE([main(){return 0;}],
 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
@@ -2342,7 +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)