-dnl Copyright (C) 2005, 2006, 2007, 2008, 2011 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2006, 2007, 2008, 2011, 2012
+dnl Free Software Foundation, Inc.
dnl
dnl This file is part of GCC.
dnl
fi])
AC_DEFUN([gcc_AC_INITFINI_ARRAY],
-[AC_ARG_ENABLE(initfini-array,
+[AC_REQUIRE([gcc_SUN_LD_VERSION])dnl
+AC_ARG_ENABLE(initfini-array,
[ --enable-initfini-array use .init_array/.fini_array sections],
[], [
AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
gcc_cv_initfini_array, [dnl
if test "x${build}" = "x${target}" && test "x${build}" = "x${host}"; then
- AC_RUN_IFELSE([AC_LANG_SOURCE([
-#ifdef __ia64__
+ case "${target}" in
+ ia64-*)
+ AC_RUN_IFELSE([AC_LANG_SOURCE([
+#ifndef __ELF__
+#error Not an ELF OS
+#endif
/* We turn on .preinit_array/.init_array/.fini_array support for ia64
if it can be used. */
static int x = -1;
int main (void) { return x; }
int foo (void) { x = 0; }
int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;
-#else
-extern void abort ();
-static int count;
-
-static void
-init1005 ()
-{
- if (count != 0)
- abort ();
- count = 1005;
-}
-void (*const init_array1005[]) ()
- __attribute__ ((section (".init_array.01005"), aligned (sizeof (void *))))
- = { init1005 };
-static void
-fini1005 ()
-{
- if (count != 1005)
- abort ();
-}
-void (*const fini_array1005[]) ()
- __attribute__ ((section (".fini_array.01005"), aligned (sizeof (void *))))
- = { fini1005 };
-
-static void
-ctor1007 ()
-{
- if (count != 1005)
- abort ();
- count = 1007;
-}
-void (*const ctors1007[]) ()
- __attribute__ ((section (".ctors.64528"), aligned (sizeof (void *))))
- = { ctor1007 };
-static void
-dtor1007 ()
-{
- if (count != 1007)
- abort ();
- count = 1005;
-}
-void (*const dtors1007[]) ()
- __attribute__ ((section (".dtors.64528"), aligned (sizeof (void *))))
- = { dtor1007 };
-
-static void
-init65530 ()
-{
- if (count != 1007)
- abort ();
- count = 65530;
-}
-void (*const init_array65530[]) ()
- __attribute__ ((section (".init_array.65530"), aligned (sizeof (void *))))
- = { init65530 };
-static void
-fini65530 ()
-{
- if (count != 65530)
- abort ();
- count = 1007;
-}
-void (*const fini_array65530[]) ()
- __attribute__ ((section (".fini_array.65530"), aligned (sizeof (void *))))
- = { fini65530 };
-
-static void
-ctor65535 ()
-{
- if (count != 65530)
- abort ();
- count = 65535;
-}
-void (*const ctors65535[]) ()
- __attribute__ ((section (".ctors"), aligned (sizeof (void *))))
- = { ctor65535 };
-static void
-dtor65535 ()
-{
- if (count != 65535)
- abort ();
- count = 65530;
-}
-void (*const dtors65535[]) ()
- __attribute__ ((section (".dtors"), aligned (sizeof (void *))))
- = { dtor65535 };
-
-int
-main ()
-{
- return 0;
-}
-#endif
])],
[gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no],
- [gcc_cv_initfini_array=no])
- else
- AC_MSG_CHECKING(cross compile... guessing)
- gcc_cv_initfini_array=no
- fi])
+ [gcc_cv_initfini_array=no]);;
+ *)
+ gcc_cv_initfini_array=no
+ if test $in_tree_ld = yes ; then
+ if test "$gcc_cv_gld_major_version" -eq 2 \
+ -a "$gcc_cv_gld_minor_version" -ge 22 \
+ -o "$gcc_cv_gld_major_version" -gt 2 \
+ && test $in_tree_ld_is_elf = yes; then
+ gcc_cv_initfini_array=yes
+ fi
+ elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
+ cat > conftest.s <<\EOF
+.section .dtors,"a",%progbits
+.balign 4
+.byte 'A', 'A', 'A', 'A'
+.section .ctors,"a",%progbits
+.balign 4
+.byte 'B', 'B', 'B', 'B'
+.section .fini_array.65530,"a",%progbits
+.balign 4
+.byte 'C', 'C', 'C', 'C'
+.section .init_array.65530,"a",%progbits
+.balign 4
+.byte 'D', 'D', 'D', 'D'
+.section .dtors.64528,"a",%progbits
+.balign 4
+.byte 'E', 'E', 'E', 'E'
+.section .ctors.64528,"a",%progbits
+.balign 4
+.byte 'F', 'F', 'F', 'F'
+.section .fini_array.01005,"a",%progbits
+.balign 4
+.byte 'G', 'G', 'G', 'G'
+.section .init_array.01005,"a",%progbits
+.balign 4
+.byte 'H', 'H', 'H', 'H'
+.text
+.globl _start
+_start:
+EOF
+ if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
+ && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
+ && $gcc_cv_objdump -s -j .init_array conftest \
+ | grep HHHHFFFFDDDDBBBB > /dev/null 2>&1 \
+ && $gcc_cv_objdump -s -j .fini_array conftest \
+ | grep GGGGEEEECCCCAAAA > /dev/null 2>&1; then
+ gcc_cv_initfini_array=yes
+ fi
+changequote(,)dnl
+ rm -f conftest conftest.*
+changequote([,])dnl
+ fi
+ AC_PREPROC_IFELSE([AC_LANG_SOURCE([
+#ifndef __ELF__
+# error Not an ELF OS
+#endif
+#include <stdlib.h>
+#if defined __GLIBC_PREREQ
+# if __GLIBC_PREREQ (2, 4)
+# else
+# error GLIBC 2.4 required
+# endif
+#else
+# if defined __sun__ && defined __svr4__
+ /* Solaris ld.so.1 supports .init_array/.fini_array since Solaris 8. */
+# else
+# error The C library not known to support .init_array/.fini_array
+# endif
+#endif
+])],[
+ case "${target}" in
+ *-*-solaris2.8*)
+ # .init_array/.fini_array support was introduced in Solaris 8
+ # patches 109147-08 (sparc) and 109148-08 (x86). Since ld.so.1 and
+ # ld are guaranteed to be updated in lockstep, we can check ld -V
+ # instead. Unfortunately, proper ld version numbers were only
+ # introduced in rev. -14, so we check for that.
+ if test "$gcc_cv_sun_ld_vers_minor" -lt 272; then
+ gcc_cv_initfini_array=no
+ fi
+ ;;
+ *-*-solaris2.9* | *-*-solaris2.1[[0-9]]*)
+ # .init_array/.fini_array support is present since Solaris 9 FCS.
+ ;;
+ esac
+], [gcc_cv_initfini_array=no]);;
+ esac
+ else
+ AC_MSG_CHECKING(cross compile... guessing)
+ gcc_cv_initfini_array=no
+ fi])
enable_initfini_array=$gcc_cv_initfini_array
])
if test $enable_initfini_array = yes; then
- AC_DEFINE(HAVE_INITFINI_ARRAY, 1,
+ AC_DEFINE(HAVE_INITFINI_ARRAY_SUPPORT, 1,
[Define .init_array/.fini_array sections are available and working.])
fi])
$7
fi])])
+dnl gcc_SUN_LD_VERSION
+dnl
+dnl Determines Sun linker version numbers, setting gcc_cv_sun_ld_vers to
+dnl the complete version number and gcc_cv_sun_ld_vers_{major, minor} to
+dnl the corresponding fields.
+dnl
+dnl ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
+dnl numbers can be used in ld.so.1 feature checks even if a different
+dnl linker is configured.
+dnl
+AC_DEFUN([gcc_SUN_LD_VERSION],
+[changequote(,)dnl
+if test "x${build}" = "x${target}" && test "x${build}" = "x${host}"; then
+ case "${target}" in
+ *-*-solaris2*)
+ #
+ # Solaris 2 ld -V output looks like this for a regular version:
+ #
+ # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
+ #
+ # but test versions add stuff at the end:
+ #
+ # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
+ #
+ gcc_cv_sun_ld_ver=`/usr/ccs/bin/ld -V 2>&1`
+ if echo "$gcc_cv_sun_ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
+ gcc_cv_sun_ld_vers=`echo $gcc_cv_sun_ld_ver | sed -n \
+ -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
+ gcc_cv_sun_ld_vers_major=`expr "$gcc_cv_sun_ld_vers" : '\([0-9]*\)'`
+ gcc_cv_sun_ld_vers_minor=`expr "$gcc_cv_sun_ld_vers" : '[0-9]*\.\([0-9]*\)'`
+ fi
+ ;;
+ esac
+fi
+changequote([,])dnl
+])
+
dnl GCC_TARGET_TEMPLATE(KEY)
dnl ------------------------
dnl Define KEY as a valid configure key on the target machine.
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