vcpkg/scripts/cmake/vcpkg_internal_get_cmake_vars.cmake
Alexander Neumann 8de4ee858f
[vcpkg/scripts] Add a way to get cmake compiler settings/flags (#12936)
* add function get_cmake_vars

* fine tuning.

* apply to make based ports.

* add log suffix on not windows platforms

* fix c&p error

* add previous LINK env

* setup env on windows and extract cpp flags correctly.

* Apply suggestions from code review

* commit changes from fontconfig PR

* Apply suggestions from code review

Co-authored-by: nicole mazzuca <mazzucan@outlook.com>

* cleanup docs

* add conversion from somelib.lib to -lsomelib

* add missing ar-lib wrapper

* small but important regex correction

* add latest changes from update_fontconfig PR

* Apply suggestions from code review

first set which don't need special attention

Co-authored-by: ras0219 <533828+ras0219@users.noreply.github.com>

* Apply suggestions from code review

one more simple change

Co-authored-by: ras0219 <533828+ras0219@users.noreply.github.com>

* [x264] set env AS

* fix bugs due to refactor

* use subpath everywhere

* apply changes from CR

* remove unnecessary lines 41 & 44

* remove flag transformation

* reintroduce the flag / to - transformation for MSVC

* Apply suggestions from code review

Co-authored-by: ras0219 <533828+ras0219@users.noreply.github.com>

* rename the function

* rename function/variables

* transform flags list

* Apply suggestions from code review

* fix vcpkg_build_make due to the variable name change

* fix another case of function renaming regressions

* only rename config.log if it exists

* actually add the script after vcpkg_common_functions was deleted.

* remove setting of ldflags if path contains spaces

Co-authored-by: nicole mazzuca <mazzucan@outlook.com>
Co-authored-by: ras0219 <533828+ras0219@users.noreply.github.com>
2020-11-10 09:52:02 -08:00

59 lines
2.3 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-${TARGET_TRIPLET}
)
file(WRITE "${${_gcv_OUTPUT_FILE}}" "include(\"${CURRENT_BUILDTREES_DIR}/cmake-vars-${TARGET_TRIPLET}-dbg.cmake.log\")\ninclude(\"${CURRENT_BUILDTREES_DIR}/cmake-vars-${TARGET_TRIPLET}-rel.cmake.log\")")
endfunction()