From 9b6c1eb2cc3ff3b048950050f3b30bdb0d10a1c8 Mon Sep 17 00:00:00 2001
From: Neil Roberts <neil@linux.intel.com>
Date: Mon, 18 Jul 2011 18:47:44 +0100
Subject: [PATCH] configure: Add configure options to override the GL library
 name

This adds 3 configure options to override the library name that gets
dlopened for GL, GLES and GLESv2. This could be useful for distro
maintainers who have an unusual name for the libraries (for example,
on OpenBSD the GL library appears to be called libGL.so.4). This could
at least be simpler than having to create a distro patch.

The configure options would be used like this:

./configure --with-gl-libname=libGL.so \
            --with-gles1-libname=libGLESv1.so \
            --with-gles2-libname=libGLESv2.so

https://bugzilla.gnome.org/show_bug.cgi?id=654593
---
 configure.ac | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/configure.ac b/configure.ac
index a31d65fa8..117e3e286 100644
--- a/configure.ac
+++ b/configure.ac
@@ -540,6 +540,20 @@ AM_CONDITIONAL([COGL_DRIVER_GL_SUPPORTED], [test "x$enable_gl" = "xyes"])
 AM_CONDITIONAL([COGL_DRIVER_GLES_SUPPORTED],
                [test "x$enable_gles1" = "xyes" || test "x$enable_gles2" = "xyes"])
 
+dnl Allow the GL library names to be overridden with configure options
+AC_ARG_WITH([gl-libname],
+            [AS_HELP_STRING([--with-gl-libname],
+                            override the name of the GL library to dlopen)],
+            [COGL_GL_LIBNAME="$withval"])
+AC_ARG_WITH([gles1-libname],
+            [AS_HELP_STRING([--with-gles1-libname],
+                            override the name of the GLESv1 library to dlopen)],
+            [COGL_GLES1_LIBNAME="$withval"])
+AC_ARG_WITH([gles2-libname],
+            [AS_HELP_STRING([--with-gles2-libname],
+                            override the name of the GLESv2 library to dlopen)],
+            [COGL_GLES2_LIBNAME="$withval"])
+
 AC_SUBST([COGL_GL_LIBNAME])
 AC_SUBST([COGL_GLES1_LIBNAME])
 AC_SUBST([COGL_GLES2_LIBNAME])
@@ -957,6 +971,12 @@ echo ""
 # Features
 echo " • Features:"
 echo "        Drivers: ${enabled_drivers}"
+AS_IF([test "x$GL_LIBRARY_DIRECTLY_LINKED" != xyes],
+      [for driver in $enabled_drivers; do
+         driver=`echo $driver | tr "[gles]" "[GLES]"`
+         libname=`eval echo \\$COGL_${driver}_LIBNAME`
+         echo "        Library name for $driver: $libname"
+       done])
 echo "        GL Window System APIs:${GL_WINSYS_APIS}"
 if test "x$SUPPORT_EGL" = "xyes"; then
 echo "        EGL Platforms:${EGL_PLATFORMS}"