X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=tests%2Fest-epsilon.c;h=5ff0a8aca8a763065d14032b7d4476100c58678d;hb=81171348791b325db2393f072fcf8bd93277d20d;hp=ea4fa3572f13aa323fec3dd8d2f6251e0ba8666d;hpb=c90db01dc8d5462a3da22771ffa7c96f5ea31217;p=flightgear.git

diff --git a/tests/est-epsilon.c b/tests/est-epsilon.c
index ea4fa3572..5ff0a8aca 100644
--- a/tests/est-epsilon.c
+++ b/tests/est-epsilon.c
@@ -1,5 +1,19 @@
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#ifdef HAVE_WINDOWS_H
+#  include <windows.h>
+#endif
+
 #include <stdio.h>
-#include <GL/glut.h>
+
+#include <simgear/compiler.h>
+#if defined( __APPLE__)
+# include <OpenGL/OpenGL.h>
+#else
+# include <GL/gl.h>
+#endif
 
 int main() {
     GLfloat a, t;