When with_gtk is selected but GTK3 is not present the current logic
fails to check for GTK2. This edit corrects this.
if(NOT WITH_GTK_2_X)
CHECK_MODULE(gtk+-3.0 HAVE_GTK3)
set(HAVE_GTK HAVE_GTK3)
- else()
+ endif()
+ if(NOT HAVE_GTK)
CHECK_MODULE(gtk+-2.0 HAVE_GTK)
if(HAVE_GTK AND (ALIASOF_gtk+-2.0_VERSION VERSION_LESS MIN_VER_GTK))
message (FATAL_ERROR "GTK support requires a minimum version of ${MIN_VER_GTK} (${ALIASOF_gtk+-2.0_VERSION} found)")