[Buildroot] [RFC] package/sdl2_ttf: include GL/gl.h while checking for OpenGL support

Romain Naour romain.naour at gmail.com
Thu Dec 29 00:47:35 UTC 2016


Since SDL2 2.0.4, SDL2 OpenGL headers (SDL_opengl.h) are unconditionally
installed even if the OpenGL support has been disabled. So the SDL_ttf
build system enable the OpenGL support without checking for a GL
provider.

Include GL/gl.h in the compile test.

Fixes:
http://autobuild.buildroot.net/results/639/6397856cae5a7e139b449435feadaafaff312870

Signed-off-by: Romain Naour <romain.naour at gmail.com>
---
 ...nclude-GL-gl.h-while-checking-for-OpenGL-.patch | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 package/sdl2_ttf/0001-configure-include-GL-gl.h-while-checking-for-OpenGL-.patch

diff --git a/package/sdl2_ttf/0001-configure-include-GL-gl.h-while-checking-for-OpenGL-.patch b/package/sdl2_ttf/0001-configure-include-GL-gl.h-while-checking-for-OpenGL-.patch
new file mode 100644
index 0000000..c2808b4
--- /dev/null
+++ b/package/sdl2_ttf/0001-configure-include-GL-gl.h-while-checking-for-OpenGL-.patch
@@ -0,0 +1,38 @@
+From 90874329ef6af3a7b74c5e9e2389fc2dad9a6044 Mon Sep 17 00:00:00 2001
+From: Romain Naour <romain.naour at gmail.com>
+Date: Thu, 29 Dec 2016 01:35:18 +0100
+Subject: [PATCH] configure: include GL/gl.h while checking for OpenGL support
+
+Since SDL2 2.0.4, SDL2 OpenGL headers (SDL_opengl.h) are unconditionally
+installed even if the OpenGL support has been disabled. So the SDL_ttf
+build system enable the OpenGL support without checking for a GL
+provider.
+
+Include GL/gl.h in the compile test.
+
+Fixes:
+http://autobuild.buildroot.net/results/639/6397856cae5a7e139b449435feadaafaff312870
+
+Signed-off-by: Romain Naour <romain.naour at gmail.com>
+---
+Maybe we should also check for libGL:
+AC_CHECK_LIB([GL], [glXCreateContext]...
+---
+ configure.in | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/configure.in b/configure.in
+index 9b36e15..daa1be3 100644
+--- a/configure.in
++++ b/configure.in
+@@ -165,6 +165,7 @@ esac
+ AC_MSG_CHECKING(for OpenGL support)
+ have_opengl=no
+ AC_TRY_COMPILE([
++ #include <GL/gl.h>
+  #include "SDL_opengl.h"
+ ],[
+  GLuint texture;
+-- 
+2.9.3
+
-- 
2.9.3



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