From f7a74742e69119d7133c8d9619ae94175faed068 Mon Sep 17 00:00:00 2001
From: Jeff Johnston <jjohnstn@redhat.com>
Date: Fri, 7 Jan 2005 18:04:39 +0000
Subject: 2005-01-07  Paul Brook  <paul@codesourcery.com>

        * configure.in: Add test for .init_array.
        * configure: Regenerate.
        * newlib.hin: Add HAVE_INITFINI_ARRAY.
        * libc/misc/Makefile.am: Add init.c
        * libc/misc/Makefile.in: Regenerate.
        * libc/misc/init.c: New file.
        * libc/sys/arm/crt0.S: Call __libc_{init,fini}_array instead of
        _init/_fini if they exist.
---
 newlib/configure.in | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'newlib/configure.in')

diff --git a/newlib/configure.in b/newlib/configure.in
index dbc4cb5ef..d666136a1 100644
--- a/newlib/configure.in
+++ b/newlib/configure.in
@@ -329,6 +329,31 @@ if test "x${iconv_encodings}" != "x" \
   done
 fi;
 
+AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
+	       libc_cv_initfinit_array, [dnl
+cat > conftest.c <<EOF
+int _start (void) { return 0; }
+int __start (void) { return 0; }
+int foo (void) { return 1; }
+int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;
+EOF
+if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c
+		   -static -nostartfiles -nostdlib 1>&AS_MESSAGE_LOG_FD])
+then
+  if readelf -S conftest | grep -e INIT_ARRAY > /dev/null; then
+    libc_cv_initfinit_array=yes
+  else
+    libc_cv_initfinit_array=no
+  fi
+else
+  libc_cv_initfinit_array=no
+fi
+rm -f conftest*])
+AC_SUBST(libc_cv_initfinit_array)
+if test $libc_cv_initfinit_array = yes; then
+  AC_DEFINE_UNQUOTED(HAVE_INITFINI_ARRAY)
+fi
+
 AC_OUTPUT(Makefile,
 [if test -n "$CONFIG_FILES"; then
   unset ac_file
-- 
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