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-rw-r--r--config/ChangeLog5
-rw-r--r--config/elf.m427
2 files changed, 32 insertions, 0 deletions
diff --git a/config/ChangeLog b/config/ChangeLog
index 9e524fc..a881349 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,8 @@
+2010-01-02 Richard Guenther <rguenther@suse.de>
+
+ PR lto/41529
+ * elf.m4: New file.
+
2009-11-30 Joseph Myers <joseph@codesourcery.com>
* largefile.m4 (ACX_LARGEFILE): Require AC_CANONICAL_HOST and
diff --git a/config/elf.m4 b/config/elf.m4
new file mode 100644
index 0000000..44d0249
--- /dev/null
+++ b/config/elf.m4
@@ -0,0 +1,27 @@
+dnl Copyright (C) 2010 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Paolo Bonzini.
+
+dnl usage: ACX_ELF_TARGET_IFELSE([if-elf], [if-not-elf])
+AC_DEFUN([ACX_ELF_TARGET_IFELSE], [
+AC_REQUIRE([AC_CANONICAL_TARGET])
+
+target_elf=no
+case $target in
+ *-darwin* | *-aix* | *-cygwin* | *-mingw* | *-aout* | *-*coff* | \
+ *-msdosdjgpp* | *-netware* | *-vms* | *-wince* | *-*-pe* | \
+ alpha*-dec-osf* | *-interix*)
+ target_elf=no
+ ;;
+ *)
+ target_elf=yes
+ ;;
+esac
+
+AS_IF([test $target_elf = yes], [$1], [$2])
+])