cpp-utilities/cmake/modules/TemplateFinder.cmake

21 lines
1.3 KiB
CMake

if(NOT DEFINED FIND_TEMPLATE_FILE_EXISTS)
set(FIND_TEMPLATE_FILE_EXISTS true)
function(find_template_file FILE_NAME PROJECT_VAR_NAME OUTPUT_VAR)
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/cmake/templates/${FILE_NAME}.in")
# check own source directory
set(${OUTPUT_VAR} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/templates/${FILE_NAME}.in" 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/${FILE_NAME}.in")
# check sources of project
set(${OUTPUT_VAR} "${${PROJECT_VAR_NAME}_SOURCE_DIR}/cmake/templates/${FILE_NAME}.in" 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}.in")
# check installed version of project
set(${OUTPUT_VAR} "${${PROJECT_VAR_NAME}_CONFIG_DIRS}/templates/${FILE_NAME}.in" 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()
endif()