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Modernized CMake, added Boost::headers dependency and install option #564

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merged 1 commit into from
Jul 1, 2024
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Modernized CMake, added Boost::headers dependency and install option #564

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1 change: 1 addition & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
@@ -1,2 +1,3 @@
build*/
site/
.cache/
96 changes: 55 additions & 41 deletions CMakeLists.txt
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Expand Up @@ -4,57 +4,71 @@
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#
cmake_minimum_required(VERSION 2.8)
project(Boost.DI CXX)
set(CXX_STANDARD 14 CACHE STRING "C++ Standard Version. [14|17|20]")
cmake_minimum_required(VERSION 3.13)
project(Boost.DI LANGUAGES CXX)

add_library(${PROJECT_NAME} INTERFACE)
target_include_directories(
${PROJECT_NAME} INTERFACE
${CMAKE_CURRENT_SOURCE_DIR}/include
${CMAKE_CURRENT_SOURCE_DIR}/extension/include
)

if(${CMAKE_CXX_COMPILER_ID} STREQUAL GNU)
set(COMPILER_SPECIFIC_CXX_STANDARD "-std=c++${CXX_STANDARD}")
string(REPLACE "14" "1y" COMPILER_SPECIFIC_CXX_STANDARD ${COMPILER_SPECIFIC_CXX_STANDARD})
string(REPLACE "17" "1z" COMPILER_SPECIFIC_CXX_STANDARD ${COMPILER_SPECIFIC_CXX_STANDARD})
string(REPLACE "20" "2a" COMPILER_SPECIFIC_CXX_STANDARD ${COMPILER_SPECIFIC_CXX_STANDARD})

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMPILER_SPECIFIC_CXX_STANDARD} -fno-exceptions -pedantic -pedantic-errors -Wall -Wextra -Werror")
if(CMAKE_VERSION VERSION_LESS 3.21)
# Emulates CMake 3.21+ behavior.
if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
set(PROJECT_IS_TOP_LEVEL ON)
set(${PROJECT_NAME}_IS_TOP_LEVEL ON)
else()
set(PROJECT_IS_TOP_LEVEL OFF)
set(${PROJECT_NAME}_IS_TOP_LEVEL OFF)
endif()
endif()

elseif (${CMAKE_CXX_COMPILER_ID} STREQUAL Clang OR ${CMAKE_CXX_COMPILER_ID} STREQUAL AppleClang)
set(COMPILER_SPECIFIC_CXX_STANDARD "-std=c++${CXX_STANDARD}")
string(REPLACE "14" "1y" COMPILER_SPECIFIC_CXX_STANDARD ${COMPILER_SPECIFIC_CXX_STANDARD})
string(REPLACE "17" "1z" COMPILER_SPECIFIC_CXX_STANDARD ${COMPILER_SPECIFIC_CXX_STANDARD})
string(REPLACE "20" "2a" COMPILER_SPECIFIC_CXX_STANDARD ${COMPILER_SPECIFIC_CXX_STANDARD})
include(GNUInstallDirs)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMPILER_SPECIFIC_CXX_STANDARD} -fno-exceptions -pedantic -pedantic-errors -Wall -Wextra -Werror")

elseif (${CMAKE_CXX_COMPILER_ID} STREQUAL MSVC)
set(COMPILER_SPECIFIC_CXX_STANDARD "/std:c++${CXX_STANDARD}")
string(REPLACE "20" "latest" COMPILER_SPECIFIC_CXX_STANDARD ${COMPILER_SPECIFIC_CXX_STANDARD})
find_package(Boost REQUIRED COMPONENTS headers)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMPILER_SPECIFIC_CXX_STANDARD} /W3 /EHsc /Zc:__cplusplus")
set(CMAKE_CXX_STANDARD_REQUIRED ON)

else()
message(WARNING "Unsupported compiler!")
if(NOT DEFINED CMAKE_CXX_STANDARD)
set(CMAKE_CXX_STANDARD 14)
elseif(CMAKE_CXX_STANDARD LESS 14)
message(FATAL_ERROR "Boost.DI requires at least C++14")
endif()

if (CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
set(IS_TOPLEVEL_PROJECT TRUE)
else ()
set(IS_TOPLEVEL_PROJECT FALSE)
endif ()
add_library(${PROJECT_NAME} INTERFACE)
target_include_directories(
${PROJECT_NAME} INTERFACE
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/extension/include>
)
target_link_libraries(${PROJECT_NAME} INTERFACE Boost::headers)

option(BOOST_DI_OPT_BUILD_TESTS "Build and perform Boost.DI tests" ${PROJECT_IS_TOP_LEVEL})

option(BOOST_DI_OPT_BUILD_TESTS "Build and perform Boost.DI tests" ${IS_TOPLEVEL_PROJECT})
if (BOOST_DI_OPT_BUILD_TESTS)
if(BOOST_DI_OPT_BUILD_TESTS)
enable_testing()
add_subdirectory(extension/test)
add_subdirectory(test)
endif ()
endif()

option(BOOST_DI_OPT_BUILD_EXAMPLES "Build perform Boost.DI examples" ${PROJECT_IS_TOP_LEVEL})

option(BOOST_DI_OPT_BUILD_EXAMPLES "Build perform Boost.DI examples" ${IS_TOPLEVEL_PROJECT})
if (BOOST_DI_OPT_BUILD_EXAMPLES)
if(BOOST_DI_OPT_BUILD_EXAMPLES)
add_subdirectory(example)
endif ()
endif()

option(BOOST_DI_OPT_INSTALL "Install Boost.DI" "NOT ${PROJECT_IS_TOP_LEVEL}")

if(BOOST_DI_OPT_INSTALL)
install(
TARGETS ${PROJECT_NAME}
EXPORT ${PROJECT_NAME}Config
INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)

install(
EXPORT ${PROJECT_NAME}Config
DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
NAMESPACE Boost::
)

install(
DIRECTORY ${CMAKE_SOURCE_DIR}/include/
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)
endif()
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