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CMakeLists.txt
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CMakeLists.txt
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####
# General information
####
# Required CMAKE
cmake_minimum_required(VERSION 3.16 FATAL_ERROR)
# Define Project
project("bezman"
VERSION 0.0.1
DESCRIPTION
"A header library to facilitate the manipulation of Bezier-splines"
LANGUAGES CXX)
# Options
option(BEZMAN_GOOGLETEST "Build with GoogleTest" ON)
option(BEZMAN_USE_COMPILE_OPTIONS "Populates INTERFACE compile flags" ON)
# Config
set(namespace "${PROJECT_NAME}::")
set(TARGETS_EXPORT_NAME "${PROJECT_NAME}Targets")
set(MY_FANCY_TARGET_NAME "${PROJECT_NAME}")
set(MY_FANCY_LOGGER_TARGET "logging")
set(lib_destination "lib")
set(config_destination "${lib_destination}/cmake/${PROJECT_NAME}")
set(gen_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")
set(version_config "${gen_dir}/${PROJECT_NAME}ConfigVersion.cmake")
set(project_config "${gen_dir}/${PROJECT_NAME}Config.cmake")
set(include_destination "include")
set(include_destination_headers ${include_destination}/${PROJECT_NAME})
# Set defaults
# Build type
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Debug)
endif()
# Install prefix
if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
set(default_install_dir ${CMAKE_CURRENT_SOURCE_DIR}/install)
message(STATUS
"Setting default install prefix: "
"${default_install_dir}")
set(CMAKE_INSTALL_PREFIX
${default_install_dir} CACHE PATH "" FORCE)
endif()
# Print out information
message(STATUS "Compile using ${CMAKE_CXX_COMPILER_ID} compiler")
if(CMAKE_BUILD_TYPE MATCHES Debug)
message(STATUS "Build debug!")
else()
message(STATUS "Build release!")
endif()
# Set compile information
if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
set(OPTIMIZATION_FLAGS -O3)
set(RUNTIME_CHECKS_DEBUG -D_GLIBCXX_DEBUG)
set(WARNING_FLAGS -Wall -Wextra -Wpedantic -Wzero-as-null-pointer-constant
-Wno-unused>)
elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
set(OPTIMIZATION_FLAGS -O3)
set(RUNTIME_CHECKS_DEBUG)
set(WARNING_FLAGS
-Wall -Wextra -Wmost -Wextra -Wpedantic
-Wunreachable-code -Wshadow -Wfloat-equal -Weffc++
-Wno-unused-parameter -Wno-unused-variable
$<$<BOOL:${BEZMAN_GOOGLETEST}>:-Wno-gnu-zero-variadic-macro-arguments>)
elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
set(OPTIMIZATION_FLAGS /O2)
else()
message(WARNING "Unsupported compiler: ${CMAKE_CXX_COMPILER_ID}")
endif()
# Add Files by going through directory structure and add support for IDEs
add_subdirectory(src)
set_source_files_properties(${HEADERS}
PROPERTIES
LANGUAGE CXX
HEADER_FILE_ONLY TRUE)
source_group(TREE ${PROJECT_SOURCE_DIR} FILES ${HEADERS})
# Define Targets
# 1. My fancy target, bezman
add_library(${MY_FANCY_TARGET_NAME} INTERFACE)
add_library(${namespace}${MY_FANCY_TARGET_NAME} ALIAS ${MY_FANCY_TARGET_NAME})
target_compile_definitions(${MY_FANCY_TARGET_NAME}
INTERFACE
$<$<NOT:$<CONFIG:Debug>>:NDEBUG>)
target_include_directories(${MY_FANCY_TARGET_NAME}
INTERFACE
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/..>
$<INSTALL_INTERFACE:${incl_dest}>)
# As a header only library, it does not make sense to populate interface
# compile options unless it is absolutely necessary.
# Currently none of the flags are necessary for bezman to work. However,
# here's option to not disturb previous workflows.
if(BEZMAN_USE_COMPILE_OPTIONS)
target_compile_options(${MY_FANCY_TARGET_NAME} INTERFACE
$<$<BOOL:$<CONFIG:Release>>:${OPTIMIZATION_FLAGS}>
$<$<BOOL:$<CONFIG:Debug>>:${RUNTIME_CHECKS_DEBUG}>
${WARNING_FLAGS})
string(CONCAT COMPILE_OPTION_WARNING_PHRASE_0
"****************************************************************\n"
"BEZMAN's default compile options will propagate to all the "
"libraries that links BEZMAN. "
)
set(COMPILE_OPTION_WARNING_PHRASE_1
"If you want to DISABLE this behavior, you can RE-INSTALL BEZMAN with"
)
string(CONCAT COMPILE_OPTION_WARNING_PHRASE_2
"\n-DBEZMAN_USE_COMPILE_FLAGS=OFF.\n"
"Following options(flags) will be added: "
"$<$<BOOL:$<CONFIG:Release>>:${OPTIMIZATION_FLAGS}>"
"$<$<BOOL:$<CONFIG:Debug>>:${RUNTIME_CHECKS_DEBUG}>"
"${WARNING_FLAGS}\n"
"****************************************************************"
)
endif()
string(CONCAT BEZMAN_COMPILE_OPTION_WARNING
${COMPILE_OPTION_WARNING_PHRASE_0}
${COMPILE_OPTION_WARNING_PHRASE_1}
${COMPILE_OPTION_WARNING_PHRASE_2}
)
# Give warning directly, if bezman is likely a dependency in other project
get_directory_property(BEZMAN_NOT_TOPLEVEL_PROJECT PARENT_DIRECTORY)
if(BEZMAN_NOT_TOPLEVEL_PROJECT AND BEZMAN_USE_COMPILE_OPTIONS)
set(COMPILE_OPTION_WARNING_PHRASE_1
"You can DISABLE it by setting"
)
message(WARNING
${COMPILE_OPTION_WARNING_PHRASE_0}
${COMPILE_OPTION_WARNING_PHRASE_1}
${COMPILE_OPTION_WARNING_PHRASE_2}
)
endif()
target_compile_features(${MY_FANCY_TARGET_NAME} INTERFACE cxx_std_17)
# 2. logging
add_library(${MY_FANCY_LOGGER_TARGET} INTERFACE)
add_library(
${namespace}${MY_FANCY_LOGGER_TARGET} ALIAS ${MY_FANCY_LOGGER_TARGET}
)
target_compile_definitions(${MY_FANCY_LOGGER_TARGET} INTERFACE ENABLE_LOGGING)
# Install and provide testing
# Always download and build googletest
if(BEZMAN_GOOGLETEST)
message(STATUS "Build tests!")
message(STATUS "---- downloading and building GoogleTest...")
include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/AddGoogleTest.cmake)
add_subdirectory(tests)
else()
message(STATUS "No tests!")
endif()
# Load cmake Macros
include(CMakePackageConfigHelpers)
# Set Up Version
write_basic_package_version_file(
"${version_config}" COMPATIBILITY SameMajorVersion
)
# Automatic configuration file
configure_package_config_file(
"cmake/config.cmake.in"
"${project_config}"
INSTALL_DESTINATION "${config_destination}"
)
## INSTALLATION PROCESS
install(
TARGETS ${MY_FANCY_TARGET_NAME}
EXPORT ${TARGETS_EXPORT_NAME}
INCLUDES DESTINATION ${include_destination}
)
install(
TARGETS ${MY_FANCY_LOGGER_TARGET}
EXPORT ${TARGETS_EXPORT_NAME}
)
install(
FILES ${project_config} ${version_config}
DESTINATION ${config_destination}
)
install(
EXPORT ${TARGETS_EXPORT_NAME}
NAMESPACE ${namespace}
DESTINATION ${config_destination}
)