added target_always_include

Author: dk949

CMakeLists.txt

@@ -17,6 +17,7 @@ include(cmake/compiler_warnings.cmake)
 include(cmake/doxygen.cmake)
 include(cmake/sanitizers.cmake)
 include(cmake/macro_prefix.cmake)
+include(cmake/always_include.cmake)
 
 add_subdirectory(src)
 add_subdirectory(project_config)

cmake/always_include.cmake

@@ -0,0 +1,7 @@
+function(target_always_include target access file)
+    if (MSVC)
+        target_compile_options(${target} ${access} "/FI${file}")
+    else()
+        target_compile_options(${target} ${access} "-include${file}")
+    endif()
+endfunction()