[Cpp] CMake: include GNUInstallDirs unconditionally to have CMAKE_INSTALL_DOCDIR available

jmairboeck · jmairboeck · commit 54b11cc7dd6a · 2023-02-11T16:20:44.000+01:00
Signed-off-by: Joachim Mairböck &lt;j.mairboeck@gmail.com&gt;
diff --git a/runtime/Cpp/CMakeLists.txt b/runtime/Cpp/CMakeLists.txt
@@ -158,10 +158,11 @@ if(WITH_DEMO)
  add_subdirectory(demo)
 endif(WITH_DEMO)
 
+include(GNUInstallDirs)
+
 # Generate CMake Package Files only if install is active
 if (ANTLR4_INSTALL)
 
-  include(GNUInstallDirs)
   include(CMakePackageConfigHelpers)
 
   if(NOT ANTLR4_CMAKE_DIR)
