commit 5380706be71cb539789db88aea3d1f457e7b0698
Author:     Albrecht Schlosser <albrechts.fltk@online.de>
AuthorDate: Sat Aug 15 13:30:11 2020 +0200
Commit:     Albrecht Schlosser <albrechts.fltk@online.de>
CommitDate: Sat Aug 15 13:30:11 2020 +0200

    Fix compiler warning in example [-Wliteral-suffix]
    
    [gcc] warning: invalid suffix on literal; C++11 requires a space
      between literal and string macro [-Wliteral-suffix]

 examples/OpenGL3-glut-test.cxx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git examples/OpenGL3-glut-test.cxx examples/OpenGL3-glut-test.cxx
index 4688cde..81a22c2 100644
--- examples/OpenGL3-glut-test.cxx
+++ examples/OpenGL3-glut-test.cxx
@@ -113,7 +113,7 @@ void initShaders(void)
 #define SHADING_LANG_VERS "130"
 #endif
   // load shaders
-  const char *vv = "#version "SHADING_LANG_VERS"\n\
+  const char *vv = "#version " SHADING_LANG_VERS "\n\
   in  vec3 in_Position;\
   in  vec3 in_Color;\
   out vec3 ex_Color;\
@@ -123,7 +123,7 @@ void initShaders(void)
     gl_Position = vec4(in_Position, 1.0);\
   }";
 
-  const char *ff = "#version "SHADING_LANG_VERS"\n\
+  const char *ff = "#version " SHADING_LANG_VERS "\n\
   precision highp float;\
   in  vec3 ex_Color;\
   out vec4 out_Color;\