X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=configure.ac;h=da482a0d3f25a72b2a713acad4f063ed25739000;hb=fce276e16071947919e1e24eaae0288cfa8edfdd;hp=372287a330380647d713b6fcca92351f2ce7c113;hpb=ede4c6f2996fce6f94c0edea7ef99da7e971396a;p=ghc-hetmet.git

diff --git a/configure.ac b/configure.ac
index 372287a..da482a0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -962,12 +962,6 @@ AC_SUBST(GhcLibsWithReadline)
 dnl ** check if it is safe to include both <time.h> and <sys/time.h>
 AC_HEADER_TIME
 
-dnl ** how do we get a timezone name, and UTC offset ?
-AC_STRUCT_TIMEZONE
-
-dnl ** do we have altzone?
-FP_DECL_ALTZONE
-
 dnl ** do we have long longs?
 AC_CHECK_TYPES([long long])
 
@@ -1136,17 +1130,25 @@ dnl    (.subsections-via-symbols assembler directive)
 
 
 AC_MSG_CHECKING(for .subsections_via_symbols)
-AC_TRY_COMPILE(,[__asm__ (".subsections_via_symbols");],
-    [
-        AC_MSG_RESULT(yes)
-        AC_DEFINE([HAVE_SUBSECTIONS_VIA_SYMBOLS],[1],
-            [Define to 1 if Apple-style dead-stripping is supported.])
+AC_COMPILE_IFELSE(
+    [AC_LANG_PROGRAM([], [__asm__ (".subsections_via_symbols");])],
+    [AC_MSG_RESULT(yes)
+     AC_DEFINE([HAVE_SUBSECTIONS_VIA_SYMBOLS],[1],
+               [Define to 1 if Apple-style dead-stripping is supported.])
     ],
-    [
-        AC_MSG_RESULT(no)
-        AC_DEFINE([HAVE_SUBSECTIONS_VIA_SYMBOLS],[0],
-            [Define to 1 if Apple-style dead-stripping is supported.])
-    ])
+    [AC_MSG_RESULT(no)])
+
+dnl *** check for GNU non-executable stack note support (ELF only)
+dnl     (.section .note.GNU-stack,"",@progbits)
+
+AC_MSG_CHECKING(for GNU non-executable stack support)
+AC_COMPILE_IFELSE(
+    [AC_LANG_PROGRAM([__asm__ (".section .note.GNU-stack,\"\",@progbits");], [0])],
+    [AC_MSG_RESULT(yes)
+     AC_DEFINE([HAVE_GNU_NONEXEC_STACK],[1],
+               [Define to 1 if GNU non-executable stack notes are supported.])
+    ],
+    [AC_MSG_RESULT(no)])
 
 dnl ** check for librt
 AC_CHECK_LIB(rt, clock_gettime)