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Restructure CMakeLists.txt to be suitable for CPM.cmake #111

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Restructure CMakeLists.txt to be suitable for CPM.cmake #111

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170 changes: 87 additions & 83 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -5,26 +5,11 @@ project(tl-expected
VERSION 1.0.0
LANGUAGES CXX)

include(CMakePackageConfigHelpers)
include(CMakeDependentOption)
include(GNUInstallDirs)
include(FetchContent)
include(CTest)

if (NOT DEFINED CMAKE_CXX_STANDARD)
set(CMAKE_CXX_STANDARD 14)
endif()

option(EXPECTED_BUILD_PACKAGE "Build package files as well" ON)

cmake_dependent_option(EXPECTED_BUILD_TESTS
"Enable tl::expected tests" ON
"BUILD_TESTING" OFF)

cmake_dependent_option(EXPECTED_BUILD_PACKAGE_DEB
"Create a DEB" ON
"EXPECTED_BUILD_PACKAGE" OFF)

add_library(expected INTERFACE)
target_include_directories(expected
INTERFACE
Expand All @@ -35,83 +20,102 @@ if (NOT CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
add_library(tl::expected ALIAS expected)
endif()

# Installation help
configure_package_config_file(
"${PROJECT_SOURCE_DIR}/cmake/${PROJECT_NAME}-config.cmake.in"
"${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake"
INSTALL_DESTINATION "share/cmake/${PROJECT_NAME}")

write_basic_package_version_file(
"${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config-version.cmake"
COMPATIBILITY SameMajorVersion
ARCH_INDEPENDENT)

install(TARGETS expected
EXPORT ${PROJECT_NAME}-targets
INCLUDES DESTINATION "${CMAKE_INSTALL_DATADIR}")

install(EXPORT ${PROJECT_NAME}-targets
DESTINATION "${CMAKE_INSTALL_DATADIR}/cmake/${PROJECT_NAME}"
NAMESPACE tl::
FILE "${PROJECT_NAME}-targets.cmake")

install(FILES
"${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config-version.cmake"
"${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake"
DESTINATION "${CMAKE_INSTALL_DATADIR}/cmake/${PROJECT_NAME}")

install(DIRECTORY "include/" TYPE INCLUDE)

if(EXPECTED_BUILD_TESTS)
set(CMAKE_POLICY_DEFAULT_CMP0077 NEW)
set(CATCH_INSTALL_HELPERS OFF)
set(CATCH_BUILD_TESTING OFF)
set(CATCH_INSTALL_DOCS OFF)
FetchContent_Declare(Catch2 URL
https://github.com/catchorg/Catch2/archive/v2.9.2.zip)
FetchContent_MakeAvailable(Catch2)

file(GLOB test-sources CONFIGURE_DEPENDS tests/*.cpp)
list(FILTER test-sources EXCLUDE REGEX "tests/test.cpp")
add_executable(${PROJECT_NAME}-tests "${test-sources}")
target_compile_options(${PROJECT_NAME}-tests PRIVATE
$<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wall -Wextra>)

target_link_libraries(${PROJECT_NAME}-tests
PRIVATE
Catch2::Catch2
expected)
add_test(NAME tl::expected::tests COMMAND ${PROJECT_NAME}-tests)
endif()
if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
# Project is configured as root (not subdirectory) -> include tests and packaging
include(CMakePackageConfigHelpers)
include(CMakeDependentOption)
include(GNUInstallDirs)
include(FetchContent)
include(CTest)

if (NOT EXPECTED_BUILD_PACKAGE)
return()
endif()
option(EXPECTED_BUILD_PACKAGE "Build package files as well" ON)

list(APPEND source-generators TBZ2 TGZ TXZ ZIP)
cmake_dependent_option(EXPECTED_BUILD_TESTS
"Enable tl::expected tests" ON
"BUILD_TESTING" OFF)

if (CMAKE_HOST_WIN32)
list(APPEND binary-generators "WIX")
endif()
cmake_dependent_option(EXPECTED_BUILD_PACKAGE_DEB
"Create a DEB" ON
"EXPECTED_BUILD_PACKAGE" OFF)

if (EXPECTED_BUILD_PACKAGE_DEB)
list(APPEND binary-generators "DEB")
endif()
# Installation help
configure_package_config_file(
"${PROJECT_SOURCE_DIR}/cmake/${PROJECT_NAME}-config.cmake.in"
"${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake"
INSTALL_DESTINATION "share/cmake/${PROJECT_NAME}")

if (EXPECTED_BUILD_RPM)
list(APPEND binary-generators "RPM")
endif()
write_basic_package_version_file(
"${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config-version.cmake"
COMPATIBILITY SameMajorVersion
ARCH_INDEPENDENT)

install(TARGETS expected
EXPORT ${PROJECT_NAME}-targets
INCLUDES DESTINATION "${CMAKE_INSTALL_DATADIR}")

install(EXPORT ${PROJECT_NAME}-targets
DESTINATION "${CMAKE_INSTALL_DATADIR}/cmake/${PROJECT_NAME}"
NAMESPACE tl::
FILE "${PROJECT_NAME}-targets.cmake")

install(FILES
"${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config-version.cmake"
"${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake"
DESTINATION "${CMAKE_INSTALL_DATADIR}/cmake/${PROJECT_NAME}")

install(DIRECTORY "include/" TYPE INCLUDE)

if(EXPECTED_BUILD_TESTS)
set(CMAKE_POLICY_DEFAULT_CMP0077 NEW)
set(CATCH_INSTALL_HELPERS OFF)
set(CATCH_BUILD_TESTING OFF)
set(CATCH_INSTALL_DOCS OFF)
FetchContent_Declare(Catch2 URL
https://github.com/catchorg/Catch2/archive/v2.9.2.zip)
FetchContent_MakeAvailable(Catch2)

file(GLOB test-sources CONFIGURE_DEPENDS tests/*.cpp)
list(FILTER test-sources EXCLUDE REGEX "tests/test.cpp")
add_executable(${PROJECT_NAME}-tests "${test-sources}")
target_compile_options(${PROJECT_NAME}-tests PRIVATE
$<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wall -Wextra>)

target_link_libraries(${PROJECT_NAME}-tests
PRIVATE
Catch2::Catch2
expected)
add_test(NAME tl::expected::tests COMMAND ${PROJECT_NAME}-tests)
endif()

if (NOT EXPECTED_BUILD_PACKAGE)
return()
endif()

list(APPEND source-generators TBZ2 TGZ TXZ ZIP)

if (CMAKE_HOST_WIN32)
list(APPEND binary-generators "WIX")
endif()

if (EXPECTED_BUILD_PACKAGE_DEB)
list(APPEND binary-generators "DEB")
endif()

if (EXPECTED_BUILD_RPM)
list(APPEND binary-generators "RPM")
endif()


set(CPACK_SOURCE_GENERATOR ${source-generators})
set(CPACK_GENERATOR ${binary-generators})
set(CPACK_SOURCE_GENERATOR ${source-generators})
set(CPACK_GENERATOR ${binary-generators})

set(CPACK_PACKAGE_FILE_NAME "${PROJECT_NAME}-${PROJECT_VERSION}")
set(CPACK_SOURCE_PACKAGE_FILE_NAME "${CPACK_PACKAGE_FILE_NAME}")
set(CPACK_PACKAGE_FILE_NAME "${PROJECT_NAME}-${PROJECT_VERSION}")
set(CPACK_SOURCE_PACKAGE_FILE_NAME "${CPACK_PACKAGE_FILE_NAME}")

set(CPACK_DEBIAN_PACKAGE_MAINTAINER "Sy Brand")
set(CPACK_DEBIAN_PACKAGE_MAINTAINER "Sy Brand")

list(APPEND CPACK_SOURCE_IGNORE_FILES /.git/ /build/ .gitignore .DS_Store)
list(APPEND CPACK_SOURCE_IGNORE_FILES /.git/ /build/ .gitignore .DS_Store)

include(CPack)
include(CPack)

endif()