1From 4ab41404cb85684125d73977cadebf83bbc246f5 Mon Sep 17 00:00:00 2001
2From: =?UTF-8?q?R=C3=A9mi=20Denis-Courmont?= <remi@remlab.net>
3Date: Sat, 22 Jan 2022 11:34:38 +0200
4Subject: [PATCH] opengl: missing library check
5
6Traditionally the presence of the header file was not considered
7sufficient, though this was somewhat forgotten with the prevalence of
8pkg-config.
9
10However most libraries have portable headers, while the shared library
11is platform-dependent. It is common for the header to be present while
12the library is absent with "multilib" installations (i.e. Linux
13installation with multiple architectures).
14
15Downloaded from upstream commit:
16https://code.videolan.org/videolan/vlc/-/commit/4ab41404cb85684125d73977cadebf83bbc246f5
17
18Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
19---
20 configure.ac | 9 ++++++---
21 1 file changed, 6 insertions(+), 3 deletions(-)
22
23diff --git a/configure.ac b/configure.ac
24index 2f50808d597..0d57fadbf8b 100644
25--- a/configure.ac
26+++ b/configure.ac
27@@ -3169,7 +3169,6 @@ have_gl="no"
28 PKG_CHECK_MODULES([GL], [gl], [
29   have_gl="yes"
30 ], [
31-  AC_MSG_CHECKING([for OpenGL])
32   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
33 #ifdef _WIN32
34 # include <GL/glew.h>
35@@ -3179,13 +3178,17 @@ PKG_CHECK_MODULES([GL], [gl], [
36     [int t0 = GL_TEXTURE0;]])
37   ], [
38     GL_CFLAGS=""
39-    have_gl="yes"
40     AS_IF([test "${SYS}" != "mingw32"], [
41-      GL_LIBS="-lGL"
42+      AC_CHECK_LIB([GL], [glTexture2D], [
43+        have_gl="yes"
44+        GL_LIBS="-lGL"
45+      ])
46     ], [
47+      have_gl="yes"
48       GL_LIBS="-lopengl32"
49     ])
50   ])
51+  AC_MSG_CHECKING([for OpenGL])
52   AC_MSG_RESULT([${have_gl}])
53 ])
54 AM_CONDITIONAL([HAVE_GL], [test "${have_gl}" = "yes"])
55--
56GitLab
57
58