From 6aabccecf83b251bdf0a2dfdb647603c0e70f5c3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C3=ABl=20Carr=C3=A9?= <funman@videolan.org>
Date: Sun, 3 Dec 2006 14:06:06 +0000
Subject: [PATCH] forward port [18125] Compile glx plugin only if all required
 headers are present

---
 configure.ac | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 6ec7ef6eec..695ead4d77 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3667,11 +3667,16 @@ if test "${enable_glx}" != "no" &&
   (test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce" ||
    test "${enable_glx}" = "yes"); then
   CPPFLAGS="${CPPFLAGS_save} ${X_CFLAGS}"
-  AC_CHECK_HEADERS(X11/Xlib.h GL/glu.h GL/glx.h, [
+  AC_CHECK_HEADERS(X11/Xlib.h GL/glu.h GL/glx.h)
+  AC_COMPILE_IFELSE(AC_LANG_PROGRAM(
+    [[#if !defined(HAVE_X11_XLIB_H) || !defined(HAVE_GL_GLU_H) || !defined(HAVE_GL_GLX_H)
+    choke me
+    #endif]]),
+    [
       VLC_ADD_PLUGINS([glx])
       VLC_ADD_LDFLAGS([glx],[${X_LIBS} ${X_PRE_LIBS} -lX11 -lXext -lGL -lGLU])
       VLC_ADD_CPPFLAGS([glx],[${X_CFLAGS}])
-   ],[AC_MSG_ERROR([Please install GL development package. Alternatively you can also configure with --disable-glx.])])
+    ],[AC_MSG_ERROR([Please install GL development package. Alternatively you can also configure with --disable-glx.])])
   CPPFLAGS="${CPPFLAGS_save}"
 fi