From 7eff2bf8e27599c1c94217b2bb1b73d4b7d18e59 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20M=C3=BCller?= <schnitzeltony@googlemail.com>
Date: Wed, 6 May 2015 10:45:22 +0200
Subject: [PATCH 1/4] select platforms based on configuration results
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Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
Fetched from pull #81 on github for libepoxy:
https://github.com/anholt/libepoxy/pull/81/commits
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
---
 configure.ac          | 13 +++++--------
 src/dispatch_common.c |  9 ++++++---
 src/dispatch_common.h |  9 +++++----
 3 files changed, 16 insertions(+), 15 deletions(-)

diff --git a/configure.ac b/configure.ac
index 2d67726..225ab73 100644
--- a/configure.ac
+++ b/configure.ac
@@ -58,6 +58,10 @@ AC_CHECK_HEADER([KHR/khrplatform.h],
 # uintptr_t to a void *") by default.  Kill that.
 XORG_TESTSET_CFLAG(CWARNFLAGS, [-Wno-int-conversion])
 
+PKG_CHECK_MODULES(X11, [x11], [x11=yes], [x11=no])
+
+AM_CONDITIONAL(HAVE_X11, test x$x11 = xyes)
+
 has_znow=yes
 
 case $host_os in
@@ -86,7 +90,7 @@ case $host_os in
         ;;
     *)
         build_egl=yes
-        build_glx=yes
+        build_glx=$x11
         build_wgl=no
         # On platforms with dlopen, we load everything dynamically and
         # don't link against a specific window system or GL implementation.
@@ -144,13 +148,6 @@ esac
 
 AC_SUBST([VISIBILITY_CFLAGS])
 
-PKG_CHECK_MODULES(X11, [x11], [x11=yes], [x11=no])
-if test x$x11 = xno -a x$build_glx = xyes; then
-    AC_MSG_ERROR([libX11 headers (libx11-dev) required to build with GLX support])
-fi
-
-AM_CONDITIONAL(HAVE_X11, test x$x11 = xyes)
-
 PKG_CHECK_MODULES(GL, [gl], [gl=yes], [gl=no])
 
 AC_CONFIG_FILES([
diff --git a/src/dispatch_common.c b/src/dispatch_common.c
index 013027f..163d348 100644
--- a/src/dispatch_common.c
+++ b/src/dispatch_common.c
@@ -656,10 +656,13 @@ epoxy_get_proc_address(const char *name)
 #elif defined(__APPLE__)
     return epoxy_gl_dlsym(name);
 #else
+#if PLATFORM_HAS_GLX
     if (epoxy_current_context_is_glx()) {
         return glXGetProcAddressARB((const GLubyte *)name);
-    } else {
+    } else
+#endif /* PLATFORM_HAS_GLX */
 #if PLATFORM_HAS_EGL
+    {
         GLenum egl_api = epoxy_egl_get_current_gl_context_api();
 
         switch (egl_api) {
@@ -669,10 +672,10 @@ epoxy_get_proc_address(const char *name)
         case EGL_NONE:
             break;
         }
-#endif
     }
+#endif /* PLATFORM_HAS_EGL */
     errx(1, "Couldn't find current GLX or EGL context.\n");
-#endif
+#endif /* _WIN32 | __APPLE__*/
 }
 
 WRAPPER_VISIBILITY (void)
diff --git a/src/dispatch_common.h b/src/dispatch_common.h
index 676a4d5..2728b45 100644
--- a/src/dispatch_common.h
+++ b/src/dispatch_common.h
@@ -21,12 +21,13 @@
  * IN THE SOFTWARE.
  */
 
+#include <config.h>
 #include <stdbool.h>
 
 #ifdef _WIN32
 #define PLATFORM_HAS_EGL 0
 #define PLATFORM_HAS_GLX 0
-#define PLATFORM_HAS_WGL 1
+#define PLATFORM_HAS_WGL BUILD_WGL
 #define EPOXY_IMPORTEXPORT __declspec(dllexport)
 #elif defined(__APPLE__)
 #define PLATFORM_HAS_EGL 0
@@ -34,13 +35,13 @@
 #define PLATFORM_HAS_WGL 0
 #define EPOXY_IMPORTEXPORT
 #elif defined(ANDROID)
-#define PLATFORM_HAS_EGL 1
+#define PLATFORM_HAS_EGL BUILD_EGL
 #define PLATFORM_HAS_GLX 0
 #define PLATFORM_HAS_WGL 0
 #define EPOXY_IMPORTEXPORT
 #else
-#define PLATFORM_HAS_EGL 1
-#define PLATFORM_HAS_GLX 1
+#define PLATFORM_HAS_EGL BUILD_EGL
+#define PLATFORM_HAS_GLX BUILD_GLX
 #define PLATFORM_HAS_WGL 0
 #define EPOXY_IMPORTEXPORT
 #endif