opengl extra libs appened to main list too early

Former-commit-id: 014faea59457fe9ac17e6ac88164c9d87b40ebfd

shared/cmake/CMakeLists.txt

@@ -326,7 +326,6 @@ if(LIBIGL_WITH_OPENGL)
     endif()
   endif()
   set(LIBIGL_OPENGL_EXTRA_LIBRARIES ${OPENGL_gl_LIBRARY})
-  list(APPEND LIBIGL_EXTRA_LIBRARIES ${LIBIGL_OPENGL_EXTRA_LIBRARIES})
 
   ### GLEW for linux and windows
   if((UNIX AND NOT APPLE) OR WIN32) ### Compile glew if needed
@@ -337,6 +336,7 @@ if(LIBIGL_WITH_OPENGL)
     list(APPEND LIBIGL_INCLUDE_DIRS "${NANOGUI_DIR}/ext/glew/include")
     list(APPEND LIBIGL_OPENGL_EXTRA_LIBRARIES "glew")
   endif()
+  list(APPEND LIBIGL_EXTRA_LIBRARIES ${LIBIGL_OPENGL_EXTRA_LIBRARIES})
 
   if(LIBIGL_WITH_OPENGL_GLFW)
     set(GLFW_INCLUDE_DIRS "${NANOGUI_DIR}/ext/glfw/include")