* configure: Regenerate to track ../common/common.m4 changes.

[deliverable/binutils-gdb.git] / gdb / configure.ac

diff --git a/gdb/configure.ac b/gdb/configure.ac
index 95d5b0846868c5615482f1fb87fdacc4742b58d7..0a92812df36f1f52252bcdf06b9c0b7270bc3c4d 100644 (file)
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -1268,6 +1268,29 @@ if test "x$gdb_cv_sys_syscall_h_has_tkill" = "xyes" && test "x$ac_cv_func_syscal
   AC_DEFINE(HAVE_TKILL_SYSCALL, 1, [Define if you support the tkill syscall.])
 fi
 
+dnl Check if we can disable the virtual address space randomization.
+dnl The functionality of setarch -R.
+AC_CHECK_DECLS([ADDR_NO_RANDOMIZE],,, [#include <sys/personality.h>])
+define([PERSONALITY_TEST], [AC_LANG_PROGRAM([#include <sys/personality.h>], [
+#      if !HAVE_DECL_ADDR_NO_RANDOMIZE
+#       define ADDR_NO_RANDOMIZE 0x0040000
+#      endif
+       /* Test the flag could be set and stays set.  */
+       personality (personality (0xffffffff) | ADDR_NO_RANDOMIZE);
+       if (!(personality (personality (0xffffffff)) & ADDR_NO_RANDOMIZE))
+          return 1])])
+AC_RUN_IFELSE([PERSONALITY_TEST],
+             [have_personality=true],
+             [have_personality=false],
+             [AC_LINK_IFELSE([PERSONALITY_TEST],
+                             [have_personality=true],
+                             [have_personality=false])])
+if $have_personality
+then
+    AC_DEFINE([HAVE_PERSONALITY], 1,
+             [Define if you support the personality syscall.])
+fi
+
 dnl Handle optional features that can be enabled.
 
 AC_ARG_WITH(sysroot,