configure: proper OpenGL/GLX probe
Probe for GL and GLX symbols and X11 library. This fixes a build error
where the header files are available but the libraries are not.
Signed-off-by: Michael Walle <michael@walle.cc>
diff --git a/configure b/configure
index 46a7594..d44d6b8 100755
--- a/configure
+++ b/configure
@@ -2442,9 +2442,9 @@
#include <X11/Xlib.h>
#include <GL/gl.h>
#include <GL/glx.h>
-int main(void) { return GL_VERSION != 0; }
+int main(void) { glBegin(0); glXQueryVersion(0,0,0); return 0; }
EOF
- if compile_prog "" "-lGL" ; then
+ if compile_prog "" "-lGL -lX11" ; then
opengl=yes
else
if test "$opengl" = "yes" ; then
