Add --sysroot flag to CPPFLAGS, not CFLAGS

Originally committed as revision 19405 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 1 insertions, 1 deletions

diff --git a/configure b/configure
index 3be7aa0f5e..34aba9149e 100755
--- a/configure
+++ b/configure
@@ -1490,7 +1490,7 @@ set_default as
 if test -n "$sysroot"; then
     case "$cc_type" in
         gcc)
-            add_cflags  --sysroot="$sysroot"
+            add_cppflags --sysroot="$sysroot"
             add_ldflags --sysroot="$sysroot"
         ;;
     esac