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## # vcpkg_test_cmake
##
## Tests a built package for CMake `find_package()` integration.
##
## ## Usage:
## ```cmake
## vcpkg_test_cmake(PACKAGE_NAME <name> [MODULE])
## ```
##
## ## Parameters:
##
## ### PACKAGE_NAME
## The expected name to find with `find_package()`.
##
## ### MODULE
## Indicates that the library expects to be found via built-in CMake targets.
##
function(vcpkg_test_cmake)
# The following issues need to be addressed before re-enabling this function.
# 1. Use the actual vcpkg toolchain file.
# 2. Select a generator in the same method as vcpkg_configure_cmake() as though the PREFER_NINJA flag was always passed.
# 3. Fully emulate the toolchain file for the just-built package (just adding it to CMAKE_PREFIX_PATH is not enough).
return()
cmake_parse_arguments(_tc "MODULE" "PACKAGE_NAME" "" ${ARGN})
if(NOT DEFINED _tc_PACKAGE_NAME)
message(FATAL_ERROR "PACKAGE_NAME must be specified")
endif()
if(_tc_MODULE)
set(PACKAGE_TYPE MODULE)
else()
set(PACKAGE_TYPE CONFIG)
endif()
if(VCPKG_PLATFORM_TOOLSET STREQUAL "v142")
message(STATUS "Skipping CMake integration test due to v142 / CMake interaction issues")
return()
endif()
message(STATUS "Performing CMake integration test")
file(REMOVE_RECURSE ${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-test)
file(MAKE_DIRECTORY ${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-test)
#Generate Dummy source
# set(VCPKG_TEST_SOURCE ${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-test/CMakeIntegration.cpp)
# file(WRITE ${VCPKG_TEST_SOURCE} "int main() \{\n")
# file(APPEND ${VCPKG_TEST_SOURCE} "return 0;}")
# Generate test source CMakeLists.txt
set(VCPKG_TEST_CMAKELIST ${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-test/CMakeLists.txt)
file(WRITE ${VCPKG_TEST_CMAKELIST} "cmake_minimum_required(VERSION 3.10)\n")
file(APPEND ${VCPKG_TEST_CMAKELIST} "set(CMAKE_PREFIX_PATH \"${CURRENT_PACKAGES_DIR};${CURRENT_INSTALLED_DIR}\")\n")
file(APPEND ${VCPKG_TEST_CMAKELIST} "\n")
file(APPEND ${VCPKG_TEST_CMAKELIST} "find_package(${_tc_PACKAGE_NAME} ${PACKAGE_TYPE} REQUIRED)\n")
#To properly test if the package is actually working haveway correctly we have to link all targets of a package to
#a test executable and than actually build it. This will not discover if every symbol exported by the library is available/linked
#but it will doscover if all files which are linked by a target actual exist. Problem is: How to discover all targets?
# file(APPEND ${VCPKG_TEST_CMAKELIST} "add_executable(${_tc_PACKAGE_NAME}_exe ${VCPKG_TEST_SOURCE})\n")
# file(APPEND ${VCPKG_TEST_CMAKELIST} "target_link_libraries(${_tc_PACKAGE_NAME}_exe PRIVATE ${_tc_PACKAGE_NAME})\n")
if(DEFINED _VCPKG_CMAKE_GENERATOR)
set(VCPKG_CMAKE_TEST_GENERATOR "${_VCPKG_CMAKE_GENERATOR}")
else()
set(VCPKG_CMAKE_TEST_GENERATOR Ninja)
endif()
# Run cmake config with a generated CMakeLists.txt
set(LOGPREFIX "${CURRENT_BUILDTREES_DIR}/test-cmake-${TARGET_TRIPLET}")
execute_process(
COMMAND ${CMAKE_COMMAND} -G ${VCPKG_CMAKE_TEST_GENERATOR} .
OUTPUT_FILE "${LOGPREFIX}-out.log"
ERROR_FILE "${LOGPREFIX}-err.log"
RESULT_VARIABLE error_code
WORKING_DIRECTORY ${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-test
)
if(error_code)
message(FATAL_ERROR "CMake integration test failed; unable to find_package(${_tc_PACKAGE_NAME} ${PACKAGE_TYPE} REQUIRED)")
endif()
endfunction()
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