From: Wouter Wijngaards <wouter@nlnetlabs.nl>
Date: Tue, 1 Nov 2011 13:39:38 +0000 (+0000)
Subject: - fix -flto detection on Lion for llvm-gcc.
X-Git-Tag: release-1.4.14rc1~30
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=939c103a736e879519a1d4de4dc2848ba7c464a8;p=thirdparty%2Funbound.git

- fix -flto detection on Lion for llvm-gcc.


git-svn-id: file:///svn/unbound/trunk@2537 be551aaa-1e26-0410-a405-d3ace91eadb9
---

diff --git a/acx_nlnetlabs.m4 b/acx_nlnetlabs.m4
index c319a2bc9..0690d9902 100644
--- a/acx_nlnetlabs.m4
+++ b/acx_nlnetlabs.m4
@@ -2,7 +2,8 @@
 # Copyright 2009, Wouter Wijngaards, NLnet Labs.   
 # BSD licensed.
 #
-# Version 14
+# Version 15
+# 2011-11-01 Fix FLTO test for llvm on Lion.
 # 2011-08-01 Fix nonblock test (broken at v13).
 # 2011-08-01 Fix autoconf 2.68 warnings
 # 2011-06-23 Add ACX_CHECK_FLTO to check -flto.
@@ -394,7 +395,14 @@ AC_DEFUN([ACX_CHECK_FLTO],
 [AC_MSG_CHECKING([if $CC supports -flto])
 BAKCFLAGS="$CFLAGS"
 CFLAGS="$CFLAGS -flto"
-AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [AC_MSG_RESULT(yes)], [CFLAGS="$BAKCFLAGS" ; AC_MSG_RESULT(no)])
+AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [
+    if $CC $CFLAGS conftest.c 2>&1 | grep "warning: no debug symbols in executable" >/dev/null; then
+	CFLAGS="$BAKCFLAGS"
+	AC_MSG_RESULT(no)
+    else
+	AC_MSG_RESULT(yes)
+    fi
+], [CFLAGS="$BAKCFLAGS" ; AC_MSG_RESULT(no)])
 ])
 
 dnl Check the printf-format attribute (if any)
diff --git a/doc/Changelog b/doc/Changelog
index 9ea409a04..eb8be376b 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -4,6 +4,7 @@
 	- documentation for new options: ssl-upstream, ssl-service-key and
 	  ssl-service.pem.
 	- iana portlist updated.
+	- fix -flto detection on Lion for llvm-gcc.
 
 31 October 2011: Wouter
 	- dns over ssl support, ssl-service-pem and ssl-service-key files