vcpkg/scripts/cmake/vcpkg_internal_get_cmake_vars.cmake
2020-11-17 09:26:16 -08:00

66 lines
2.6 KiB
CMake

## # vcpkg_internal_get_cmake_vars
##
## **Only for internal use in vcpkg helpers. Behavior and arguments will change without notice.**
## Runs a cmake configure with a dummy project to extract certain cmake variables
##
## ## Usage
## ```cmake
## vcpkg_internal_get_cmake_vars(
## [OUTPUT_FILE <output_file_with_vars>]
## [OPTIONS <-DUSE_THIS_IN_ALL_BUILDS=1>...]
## )
## ```
##
## ## Parameters
## ### OPTIONS
## Additional options to pass to the test configure call
##
## ### OUTPUT_FILE
## Variable to return the path to the generated cmake file with the detected `CMAKE_` variables set as `VCKPG_DETECTED_`
##
## ## Notes
## If possible avoid usage in portfiles.
##
## ## Examples
##
## * [vcpkg_configure_make](https://github.com/Microsoft/vcpkg/blob/master/scripts/cmake/vcpkg_configure_make.cmake)
function(vcpkg_internal_get_cmake_vars)
cmake_parse_arguments(PARSE_ARGV 0 _gcv "" "OUTPUT_FILE" "OPTIONS")
if(_gcv_UNPARSED_ARGUMENTS)
message(FATAL_ERROR "${CMAKE_CURRENT_FUNCTION} was passed unparsed arguments: '${_gcv_UNPARSED_ARGUMENTS}'")
endif()
if(NOT _gcv_OUTPUT_FILE)
message(FATAL_ERROR "${CMAKE_CURRENT_FUNCTION} requires parameter OUTPUT_FILE!")
endif()
if(${_gcv_OUTPUT_FILE})
debug_message("OUTPUT_FILE ${${_gcv_OUTPUT_FILE}}")
else()
set(DEFAULT_OUT "${CURRENT_BUILDTREES_DIR}/cmake-vars-${TARGET_TRIPLET}.cmake.log") # So that the file gets included in CI artifacts.
set(${_gcv_OUTPUT_FILE} "${DEFAULT_OUT}" PARENT_SCOPE)
set(${_gcv_OUTPUT_FILE} "${DEFAULT_OUT}")
endif()
vcpkg_configure_cmake(
SOURCE_PATH "${SCRIPTS}/get_cmake_vars"
OPTIONS ${_gcv_OPTIONS} "-DVCPKG_BUILD_TYPE=${VCPKG_BUILD_TYPE}"
OPTIONS_DEBUG "-DVCPKG_OUTPUT_FILE:PATH=${CURRENT_BUILDTREES_DIR}/cmake-vars-${TARGET_TRIPLET}-dbg.cmake.log"
OPTIONS_RELEASE "-DVCPKG_OUTPUT_FILE:PATH=${CURRENT_BUILDTREES_DIR}/cmake-vars-${TARGET_TRIPLET}-rel.cmake.log"
PREFER_NINJA
LOGNAME get-cmake-vars-${TARGET_TRIPLET}
)
set(_include_string)
if(NOT DEFINED VCPKG_BUILD_TYPE OR VCPKG_BUILD_TYPE STREQUAL "release")
string(APPEND _include_string "include(\"${CURRENT_BUILDTREES_DIR}/cmake-vars-${TARGET_TRIPLET}-rel.cmake.log\")\n")
endif()
if(NOT DEFINED VCPKG_BUILD_TYPE OR VCPKG_BUILD_TYPE STREQUAL "debug")
string(APPEND _include_string "include(\"${CURRENT_BUILDTREES_DIR}/cmake-vars-${TARGET_TRIPLET}-dbg.cmake.log\")\n")
endif()
file(WRITE "${${_gcv_OUTPUT_FILE}}" "${_include_string}")
endfunction()