From 1e4a95361c71e8073f448012c3eeb6f09cc9a814 Mon Sep 17 00:00:00 2001
From: Joseph Myers <joseph@codesourcery.com>
Date: Wed, 10 Oct 2012 22:07:36 +0000
Subject: Use $CXX not cc1plus to locate C++ headers.

---
 ChangeLog    | 3 +++
 configure    | 5 ++---
 configure.in | 5 ++---
 3 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 31662fc753..e093b8f8f7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2012-10-10  Joseph Myers  <joseph@codesourcery.com>
 
+	* configure.in: Run $CXX, not cc1plus, to locate C++ headers.
+	* configure: Regenerated.
+
 	* Makeconfig (+link-static-before-libc): Don't include
 	$(link-static-libc).
 
diff --git a/configure b/configure
index a5e93160be..74ff690cf9 100755
--- a/configure
+++ b/configure
@@ -5342,10 +5342,9 @@ if test -n "$sysheaders"; then
 -isystem `echo $sysheaders | sed 's/:/ -isystem /g'`"
   if test -n "$CXX"; then
     CXX_SYSINCLUDES=
-    cxxversion=`$CXX -dumpversion 2>&5` &&
     cxxmachine=`$CXX -dumpmachine 2>&5` &&
-    cxxplus=`$CXX -print-prog-name=cc1plus`
-    cxxheaders=`$cxxplus -v /dev/null 2>&1 | sed -n '/ \//{p;q;}' | sed 's/ //'`
+    cxxheaders=`$CXX -v -S -x c++ /dev/null -o /dev/null 2>&1 \
+	| sed -n -e '1,/#include/d' -e '/^ \//{p;q;}' | sed 's/ //'`
     test "x$cxxheaders" != x && test "x$i" != "x$cxxheaders" &&
     CXX_SYSINCLUDES="$CXX_SYSINCLUDES -isystem $cxxheaders \
 -isystem $cxxheaders/$cxxmachine -isystem $cxxheaders/backward"
diff --git a/configure.in b/configure.in
index b9b5703648..facde5e55a 100644
--- a/configure.in
+++ b/configure.in
@@ -973,10 +973,9 @@ if test -n "$sysheaders"; then
 -isystem `echo $sysheaders | sed 's/:/ -isystem /g'`"
   if test -n "$CXX"; then
     CXX_SYSINCLUDES=
-    cxxversion=`$CXX -dumpversion 2>&AS_MESSAGE_LOG_FD` &&
     cxxmachine=`$CXX -dumpmachine 2>&AS_MESSAGE_LOG_FD` &&
-    cxxplus=`$CXX -print-prog-name=cc1plus`
-    cxxheaders=`$cxxplus -v /dev/null 2>&1 | sed -n '/ \//{p;q;}' | sed 's/ //'`
+    cxxheaders=`$CXX -v -S -x c++ /dev/null -o /dev/null 2>&1 \
+	| sed -n -e '1,/#include/d' -e '/^ \//{p;q;}' | sed 's/ //'`
     test "x$cxxheaders" != x && test "x$i" != "x$cxxheaders" &&
     CXX_SYSINCLUDES="$CXX_SYSINCLUDES -isystem $cxxheaders \
 -isystem $cxxheaders/$cxxmachine -isystem $cxxheaders/backward"
-- 
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