From 7a87d3a2ee89e166e241dc8e2ac46f62b5f7fc0b Mon Sep 17 00:00:00 2001
From: Amar Takhar <verm@aegisub.org>
Date: Sat, 22 Mar 2008 23:10:55 +0000
Subject: [PATCH] Change AC_AGI_COMPILE to use AC_RUN_IFELSE instead of
 AC_COMPILE_IFELSE which only checks if the program links correctly, this way
 we can make functional programs to check for library sanity.  Also disable
 the GL check until amz writes us a slice that uses gl.h/glext.h.

Originally committed to SVN as r2117.
---
 configure.in       | 19 ++++++++++++++-----
 m4macros/ac_agi.m4 |  2 +-
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/configure.in b/configure.in
index 8059714c3..6e91db08f 100644
--- a/configure.in
+++ b/configure.in
@@ -150,12 +150,7 @@ AC_SUBST(GL_LIBS)
 
 #XXX: This needs to be fixed for OSX.
 AC_AGI_COMPILE([OpenGL], [opengl], [$GL_CFLAGS], [$GL_LIBS],[
-#include <GL/gl.h>
-#include <X11/Xlib.h>
-#include <GL/glx.h>
 int main(void) {
-  glXCreateContext(NULL, NULL, NULL, True);
-  glFinish();
   return 0;
 }])
 
@@ -167,6 +162,20 @@ PKG_CHECK_MODULES(FREETYPE, freetype2 >= 9.7.0,
   AC_DEFINE(WITH_FREETYPE2, 1, [Enable FreeType 2 support.]),
   [AC_MSG_FAILURE([aegisub requires >= FreeType2 2.1.9])])
 
+AC_AGI_COMPILE([Freetype], [freetype], [$FREETYPE_CFLAGS], [$FREETYPE_LIBS],[
+#include <ft2build.h>
+#include FT_FREETYPE_H
+int main(void) {
+  FT_Library ft;
+  if (FT_Init_FreeType(&ft)) { return 1; }
+  return;
+}])
+
+if test "$agi_with_freetype" = "no"; then
+    AC_MSG_FAILURE([Please install a working Freetype library.])
+fi
+
+
 PKG_CHECK_MODULES(FONTCONFIG, fontconfig >= 2.4,
   AC_DEFINE(WITH_FONTCONFIG, 1, [Enable FontConfig support.]),
   [AC_MSG_FAILURE([aegisub requires >= fontconfig >= 2.4])])
diff --git a/m4macros/ac_agi.m4 b/m4macros/ac_agi.m4
index ea79779ca..cc4068fe2 100644
--- a/m4macros/ac_agi.m4
+++ b/m4macros/ac_agi.m4
@@ -5,7 +5,7 @@ AC_DEFUN([AC_AGI_COMPILE],[
   LDFLAGS="$4"
       AC_CACHE_CHECK(
         [wether $1 works], [agi_with_$2],
-        [AC_COMPILE_IFELSE([$5],
+        [AC_RUN_IFELSE([$5],
         [eval agi_with_$2="yes"],
         [eval agi_with_$2="no"])
         ])