[FFmpeg-cvslog] configure: Add check_builtin convenience function

[Diego Biurrun]

ffmpeg | branch: master | Diego Biurrun <diego at biurrun.de> | Mon Mar  4 22:59:41 2013 +0100| [9c7d85b3b45a77742b1e69c48ab33f9c8a2e6f35] | committer: Diego Biurrun

configure: Add check_builtin convenience function

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9c7d85b3b45a77742b1e69c48ab33f9c8a2e6f35
---

 configure |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/configure b/configure
index 157517f..f4c04a3 100755
--- a/configure
+++ b/configure
@@ -937,6 +937,16 @@ check_struct(){
         enable_safe "${struct}_${member}"
 }
 
+check_builtin(){
+    log check_builtin "$@"
+    name=$1
+    headers=$2
+    builtin=$3
+    shift 3
+    disable "$name"
+    check_code ld "$headers" "$builtin" "$@" && enable "$name"
+}
+
 require(){
     name="$1"
     header="$2"