cpp-utilities/cmake/modules/TemplateFinder.cmake

39 lines
1.7 KiB
CMake

cmake_minimum_required(VERSION 3.17.0 FATAL_ERROR)
# prevent multiple inclusion
if (DEFINED TEMPLATE_FINDER_LOADED)
return()
endif ()
set(TEMPLATE_FINDER_LOADED YES)
function (find_template_file FILE_NAME_WITHOUT_EXTENSION PROJECT_VAR_NAME OUTPUT_VAR)
find_template_file_full_name("${FILE_NAME_WITHOUT_EXTENSION}.in" "${PROJECT_VAR_NAME}" "${OUTPUT_VAR}")
set(${OUTPUT_VAR}
"${${OUTPUT_VAR}}"
PARENT_SCOPE)
endfunction ()
function (find_template_file_full_name FILE_NAME PROJECT_VAR_NAME OUTPUT_VAR)
if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/cmake/templates/${FILE_NAME}")
# check own source directory
set(${OUTPUT_VAR}
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/templates/${FILE_NAME}"
PARENT_SCOPE)
message(STATUS "Using template for ${FILE_NAME} from own (${META_PROJECT_NAME}) source directory.")
elseif (EXISTS "${${PROJECT_VAR_NAME}_SOURCE_DIR}/cmake/templates/${FILE_NAME}")
# check sources of project
set(${OUTPUT_VAR}
"${${PROJECT_VAR_NAME}_SOURCE_DIR}/cmake/templates/${FILE_NAME}"
PARENT_SCOPE)
message(STATUS "Using template for ${FILE_NAME} from ${PROJECT_VAR_NAME} source directory.")
elseif (EXISTS "${${PROJECT_VAR_NAME}_CONFIG_DIRS}/templates/${FILE_NAME}")
# check installed version of project
set(${OUTPUT_VAR}
"${${PROJECT_VAR_NAME}_CONFIG_DIRS}/templates/${FILE_NAME}"
PARENT_SCOPE)
message(STATUS "Using template for ${FILE_NAME} from ${PROJECT_VAR_NAME} installation.")
else ()
message(FATAL_ERROR "Template for ${FILE_NAME} file can not be located.")
endif ()
endfunction ()