configure: Implement --enable-host-pie

[thirdparty/gcc.git] / libiberty / configure

diff --git a/libiberty/configure b/libiberty/configure
index 65fc500200279e5cc7250ef1323d18ad36a5ddda..b8a19c421108afc822c62545c50b754742a1b7a8 100755 (executable)
--- a/libiberty/configure
+++ b/libiberty/configure
@@ -5258,8 +5258,8 @@ case "${enable_shared}" in
   *) shared=yes ;;
 esac
 
-# ...unless --enable-host-shared was passed from top-level config:
-if [ "${enable_host_shared}" = "yes" ]; then
+# ...unless --enable-host-{shared,pie} was passed from top-level config:
+if [ "${enable_host_shared}" = "yes" ] || [ "${enable_host_pie}" = "yes" ]; then
   shared=yes
 fi
 
@@ -6784,7 +6784,10 @@ else
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-find_stack_direction ()
+#include <stdlib.h>
+
+int
+find_stack_direction (void)
 {
   static char *addr = 0;
   auto char dummy;
@@ -6796,7 +6799,9 @@ find_stack_direction ()
   else
     return (&dummy > addr) ? 1 : -1;
 }
-main ()
+
+int
+main (void)
 {
   exit (find_stack_direction() < 0);
 }
@@ -7621,6 +7626,8 @@ else
 
 /* Test by Jim Wilson and Kaveh Ghazi.
    Check whether strncmp reads past the end of its string parameters. */
+#include <stdlib.h>
+#include <string.h>
 #include <sys/types.h>
 
 #ifdef HAVE_FCNTL_H
@@ -7648,7 +7655,8 @@ else
 
 #define MAP_LEN 0x10000
 
-main ()
+int
+main (void)
 {
 #if defined(HAVE_MMAP) || defined(HAVE_MMAP_ANYWHERE)
   char *p;