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* z_vcpkg_get_cmake_vars(): Use build-type-specific cache variable if VCPKG_BUILD_TYPE is defined Some ports (e.g. gettext) execute debug and release builds manually (with different options). If a globally cached copy of cmake vars file is used, the second build type has no cmake vars defined (e.g. CFLAGS is empty) because generated and globally cached cmake vars file includes only cmake vars for the first build type * Apply suggestions from code review Co-authored-by: nicole mazzuca <83086508+strega-nil-ms@users.noreply.github.com> Co-authored-by: nicole mazzuca <83086508+strega-nil-ms@users.noreply.github.com>
73 lines
2.9 KiB
CMake
73 lines
2.9 KiB
CMake
#[===[.md:
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# z_vcpkg_get_cmake_vars
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**Only for internal use in vcpkg helpers. Behavior and arguments will change without notice.**
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Runs a cmake configure with a dummy project to extract certain cmake variables
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## Usage
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```cmake
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z_vcpkg_get_cmake_vars(<out-var>)
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```
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`z_vcpkg_get_cmake_vars(cmake_vars_file)` sets `<out-var>` to
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a path to a generated CMake file, with the detected `CMAKE_*` variables
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re-exported as `VCPKG_DETECTED_*`.
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## Notes
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Avoid usage in portfiles.
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All calls to `z_vcpkg_get_cmake_vars` will result in the same output file;
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the output file is not generated multiple times.
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## Examples
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* [vcpkg_configure_make](https://github.com/Microsoft/vcpkg/blob/master/scripts/cmake/vcpkg_configure_make.cmake)
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### Basic Usage
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```cmake
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z_vcpkg_get_cmake_vars(cmake_vars_file)
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include("${cmake_vars_file}")
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message(STATUS "detected CXX flags: ${VCPKG_DETECTED_CXX_FLAGS}")
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```
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#]===]
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function(z_vcpkg_get_cmake_vars out_file)
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cmake_parse_arguments(PARSE_ARGV 1 arg "" "" "")
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if(DEFINED arg_UNPARSED_ARGUMENTS)
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message(FATAL_ERROR "${CMAKE_CURRENT_FUNCTION} was passed extra arguments: ${arg_UNPARSED_ARGUMENTS}")
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endif()
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if(DEFINED VCPKG_BUILD_TYPE)
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set(cmake_vars_file "${CURRENT_BUILDTREES_DIR}/cmake-vars-${TARGET_TRIPLET}-${VCPKG_BUILD_TYPE}.cmake.log")
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set(cache_var "Z_VCPKG_GET_CMAKE_VARS_FILE_${VCPKG_BUILD_TYPE}")
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else()
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set(cmake_vars_file "${CURRENT_BUILDTREES_DIR}/cmake-vars-${TARGET_TRIPLET}.cmake.log")
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set(cache_var Z_VCPKG_GET_CMAKE_VARS_FILE)
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endif()
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if(NOT DEFINED CACHE{${cache_var}})
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set(${cache_var} "${cmake_vars_file}"
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CACHE PATH "The file to include to access the CMake variables from a generated project.")
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vcpkg_configure_cmake(
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SOURCE_PATH "${SCRIPTS}/get_cmake_vars"
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OPTIONS_DEBUG "-DVCPKG_OUTPUT_FILE:PATH=${CURRENT_BUILDTREES_DIR}/cmake-vars-${TARGET_TRIPLET}-dbg.cmake.log"
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OPTIONS_RELEASE "-DVCPKG_OUTPUT_FILE:PATH=${CURRENT_BUILDTREES_DIR}/cmake-vars-${TARGET_TRIPLET}-rel.cmake.log"
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PREFER_NINJA
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LOGNAME get-cmake-vars-${TARGET_TRIPLET}
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Z_GET_CMAKE_VARS_USAGE # ignore vcpkg_cmake_configure, be quiet, don't set variables...
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)
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set(include_string "")
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if(NOT DEFINED VCPKG_BUILD_TYPE OR VCPKG_BUILD_TYPE STREQUAL "release")
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string(APPEND include_string "include(\"\${CMAKE_CURRENT_LIST_DIR}/cmake-vars-${TARGET_TRIPLET}-rel.cmake.log\")\n")
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endif()
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if(NOT DEFINED VCPKG_BUILD_TYPE OR VCPKG_BUILD_TYPE STREQUAL "debug")
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string(APPEND include_string "include(\"\${CMAKE_CURRENT_LIST_DIR}/cmake-vars-${TARGET_TRIPLET}-dbg.cmake.log\")\n")
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endif()
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file(WRITE "${cmake_vars_file}" "${include_string}")
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endif()
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set("${out_file}" "${${cache_var}}" PARENT_SCOPE)
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endfunction()
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