From 455b1af214a4c17fc101ca76f417d93dca91e77a Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Thu, 19 Feb 2004 19:25:11 +0000
Subject: [PATCH] When --enable-debug is used, for every -I provided to
 $CPPFLAGS we add a corresponding -isystem, if using gcc, to inhibit warnings
 on those headers.

---
 configure.ac | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index c1ffe3d..dc1ec20 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1214,7 +1214,19 @@ AC_HELP_STRING([--disable-debug],[Disable debug options]),
        
        fi
 
-       CFLAGS="$CFLAGS $WARN"
+       NEWFLAGS=""
+       for flag in $CPPFLAGS; do
+         case "$flag" in
+          -I*)
+            dnl include path
+            add=`echo $flag | sed 's/^-I/-isystem /g'`
+            NEWFLAGS="$NEWFLAGS $add"
+            ;;
+         esac
+       done
+
+       CFLAGS="$CFLAGS $WARN $NEWFLAGS"
+
     fi
     dnl strip off optimizer flags
     NEWFLAGS=""
-- 
2.7.4