From ab50935afcecc343a4b770f8248d0dc71485145d Mon Sep 17 00:00:00 2001
From: Max Horn
Date: Thu, 18 Apr 2013 19:56:07 +0200
Subject: CONFIGURE: Do not pass LDFLAGS to compiler when -c is specified

This fixes compatibility issues with clang when using -enable-Werror:
clang generates a warning when being passed both "-c" and linker-only
flags like "-L" or "-l". Combined with -Werror, this causes a spurious
configure failure.
---
 configure | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 70648631e7..db347c160d 100755
--- a/configure
+++ b/configure
@@ -230,7 +230,11 @@ cc_check_no_clean() {
 	echo >> "$TMPLOG"
 	echo "$CXX $LDFLAGS $CXXFLAGS $TMPC -o $TMPO$HOSTEXEEXT $@" >> "$TMPLOG"
 	rm -f "$TMPO$HOSTEXEEXT"
-	( $CXX $LDFLAGS $CXXFLAGS "$TMPC" -o "$TMPO$HOSTEXEEXT" "$@" ) >> "$TMPLOG" 2>&1
+	if test "-c" = "$*" ; then
+		( $CXX $CXXFLAGS "$TMPC" -o "$TMPO$HOSTEXEEXT" "$@" ) >> "$TMPLOG" 2>&1
+	else
+		( $CXX $LDFLAGS $CXXFLAGS "$TMPC" -o "$TMPO$HOSTEXEEXT" "$@" ) >> "$TMPLOG" 2>&1
+	fi
 	TMPR="$?"
 	echo "return code: $TMPR" >> "$TMPLOG"
 	echo >> "$TMPLOG"
@@ -1566,7 +1570,7 @@ EOF
 
 	if test -n "$_host"; then
 		# In cross-compiling mode, we cannot run the result
-		eval "$1 $CXXFLAGS $LDFLAGS -o $TMPO.o -c tmp_cxx_compiler.cpp" 2> /dev/null && cc_check_clean tmp_cxx_compiler.cpp
+		eval "$1 $CXXFLAGS -o $TMPO.o -c tmp_cxx_compiler.cpp" 2> /dev/null && cc_check_clean tmp_cxx_compiler.cpp
 	else
 		eval "$1 $CXXFLAGS $LDFLAGS -o $TMPO$HOSTEXEEXT tmp_cxx_compiler.cpp" 2> /dev/null && eval "$TMPO$HOSTEXEEXT 2> /dev/null" && cc_check_clean tmp_cxx_compiler.cpp
 	fi
-- 
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