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CMakeLists.txt
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#
# File : CMakeLists.txt
# ( cmake-based build system configuration file )
#
# Basic usage :
#
# - cmake .
# - make
#
# ( https://gmic.eu )
#
# Author : Sander Knopper
# ( https://github.com/saknopper )
#
# Based on work by Ștefan Talpalaru
# ( https://github.com/stefantalpalaru )
#
# Licenses : This file is 'dual-licensed', you have to choose one
# of the two licenses below to apply.
#
# CeCILL-C
# The CeCILL-C license is close to the GNU LGPL.
# ( http://cecill.info/licences/Licence_CeCILL-C_V1-en.html )
#
# or CeCILL v2.1
# The CeCILL license is compatible with the GNU GPL.
# ( http://cecill.info/licences/Licence_CeCILL_V2.1-en.html )
#
# This software is governed either by the CeCILL or the CeCILL-C license
# under French law and abiding by the rules of distribution of free software.
# You can use, modify and or redistribute the software under the terms of
# the CeCILL or CeCILL-C licenses as circulated by CEA, CNRS and INRIA
# at the following URL: "http://cecill.info".
#
# As a counterpart to the access to the source code and rights to copy,
# modify and redistribute granted by the license, users are provided only
# with a limited warranty and the software's author, the holder of the
# economic rights, and the successive licensors have only limited
# liability.
#
# In this respect, the user's attention is drawn to the risks associated
# with loading, using, modifying and/or developing or reproducing the
# software by the user in light of its specific status of free software,
# that may mean that it is complicated to manipulate, and that also
# therefore means that it is reserved for developers and experienced
# professionals having in-depth computer knowledge. Users are therefore
# encouraged to load and test the software's suitability as regards their
# requirements in conditions enabling the security of their systems and/or
# data to be ensured and, more generally, to use and operate it in the
# same conditions as regards security.
#
# The fact that you are presently reading this means that you have had
# knowledge of the CeCILL and CeCILL-C licenses and that you accept its terms.
#
cmake_minimum_required(VERSION 3.14.0)
if(CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR)
message("Build directory is equal to source directory. Binaries will be put in the src directory.")
message("")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/src/" CACHE FILEPATH "Output directory for all targets." FORCE)
set(GMIC_BINARIES_PATH ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
else()
set(GMIC_BINARIES_PATH ${CMAKE_BINARY_DIR})
endif()
set(CMAKE_CXX_STANDARD 11)
set(CXX_STANDARD_REQUIRED ON)
project(gmic CXX C)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
find_package(PkgConfig)
include(FeatureSummary)
include(GNUInstallDirs)
find_package(CImg REQUIRED)
find_package(GMicStdlib REQUIRED)
# options controlling the build process
option(BUILD_LIB "Build the GMIC shared library" ON)
option(BUILD_LIB_STATIC "Build the GMIC static library" ON)
option(BUILD_CLI "Build the CLI interface" ON)
option(BUILD_MAN "Build the manpage" ON)
option(BUILD_BASH_COMPLETION "Build Bash completion" ON)
option(CUSTOM_CFLAGS "Override default compiler optimization flags" OFF)
option(ENABLE_DYNAMIC_LINKING "Dynamically link the binaries to the GMIC shared library" OFF)
option(ENABLE_LTO "Enable -flto (Link Time Optimizer) on gcc and clang" OFF)
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Release)
endif()
# compile flags
set(CMAKE_POSITION_INDEPENDENT_CODE True)
list(APPEND GMIC_CXX_COMPILE_FLAGS -Dcimg_use_vt100 -Dgmic_is_parallel -Dcimg_use_abort)
if(APPLE)
list(APPEND GMIC_CXX_COMPILE_FLAGS -mmacosx-version-min=10.8 -stdlib=libc++ -Wno-error=c++11-narrowing -Wc++11-extensions -fpermissive)
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
list(APPEND GMIC_CXX_COMPILE_FLAGS -Wno-error=c++11-narrowing -fpermissive)
else()
list(APPEND GMIC_CXX_COMPILE_FLAGS -Wno-error=narrowing -fno-ipa-sra -fpermissive)
endif()
if(NOT "${PRERELEASE_TAG}" STREQUAL "")
list(APPEND GMIC_CXX_COMPILE_FLAGS "-Dgmic_prerelease=\"${PRERELEASE_TAG}\"")
endif()
if (ENABLE_LTO)
# https://stackoverflow.com/a/47370726/160386
include(CheckIPOSupported)
check_ipo_supported(RESULT supported OUTPUT error)
if(supported)
message(STATUS "IPO / LTO enabled")
set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
else()
message(STATUS "IPO / LTO not supported: <${error}>")
endif()
endif()
if(ENABLE_DYNAMIC_LINKING)
if(NOT BUILD_LIB)
message(FATAL_ERROR "ENABLE_DYNAMIC_LINKING needs BUILD_LIB")
endif()
set(CMAKE_SKIP_RPATH TRUE)
endif()
string(TOLOWER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_LOWER)
if (${CMAKE_BUILD_TYPE_LOWER} STREQUAL "debug")
list(PREPEND GMIC_CXX_COMPILE_FLAGS -g -ansi -Wall -Wextra -pedantic -Dcimg_verbosity=3)
endif()
if (${CMAKE_BUILD_TYPE_LOWER} STREQUAL "relwithdebinfo")
list(PREPEND GMIC_CXX_COMPILE_FLAGS -g)
endif()
if (NOT CUSTOM_CFLAGS)
if (${CMAKE_BUILD_TYPE_LOWER} STREQUAL "debug")
list(PREPEND GMIC_CXX_COMPILE_FLAGS -Og)
else()
list(PREPEND GMIC_CXX_COMPILE_FLAGS -O3)
endif()
endif()
# source files
set(CLI_Sources src/gmic.cpp)
if(BUILD_LIB)
add_library(libgmic SHARED ${CLI_Sources})
target_compile_options(libgmic PRIVATE ${GMIC_CXX_COMPILE_FLAGS} -Dgmic_core)
set_target_properties(libgmic PROPERTIES SOVERSION "1" OUTPUT_NAME "gmic")
target_link_libraries(libgmic
PRIVATE
CImg::CImg
GMicStdlib::Stdlib
)
target_include_directories(libgmic
PUBLIC
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>
)
install(TARGETS libgmic EXPORT GmicTargets
PUBLIC_HEADER DESTINATION "${CMAKE_INSTALL_LIBDIR}"
LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
)
install(FILES src/gmic.h DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
endif()
if(BUILD_LIB_STATIC)
add_library(libgmicstatic STATIC ${CLI_Sources})
target_compile_options(libgmicstatic PRIVATE ${GMIC_CXX_COMPILE_FLAGS} -Dgmic_core)
set_target_properties(libgmicstatic PROPERTIES OUTPUT_NAME "gmic")
target_link_libraries(libgmicstatic
CImg::CImg
GMicStdlib::Stdlib
)
target_include_directories(libgmicstatic
PUBLIC
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>
)
install(TARGETS libgmicstatic EXPORT GmicTargets ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}")
install(FILES src/gmic.h DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
endif()
if(BUILD_CLI)
add_executable(gmic src/gmic_cli.cpp)
target_compile_options(gmic PRIVATE ${GMIC_CXX_COMPILE_FLAGS})
if(ENABLE_DYNAMIC_LINKING)
target_link_libraries(gmic
PUBLIC
libgmic
PRIVATE
CImg::CImg
)
else()
target_link_libraries(gmic libgmicstatic)
endif()
install(TARGETS gmic RUNTIME DESTINATION bin LIBRARY DESTINATION lib)
endif()
if(BUILD_MAN)
file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/man)
add_custom_command(
OUTPUT ${CMAKE_BINARY_DIR}/man/gmic.1
DEPENDS gmic
COMMAND LD_LIBRARY_PATH=${GMIC_BINARIES_PATH} ${GMIC_BINARIES_PATH}/gmic ${CMAKE_SOURCE_DIR}/src/gmic_stdlib.gmic it ${CMAKE_SOURCE_DIR}/src/gmic_stdlib.gmic reference man > ${CMAKE_BINARY_DIR}/man/gmic.1
)
add_custom_target(man ALL DEPENDS ${CMAKE_BINARY_DIR}/man/gmic.1)
install(FILES ${CMAKE_BINARY_DIR}/man/gmic.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1/)
endif()
if(BUILD_BASH_COMPLETION)
file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/resources)
add_custom_command(
OUTPUT ${CMAKE_BINARY_DIR}/resources/gmic_bashcompletion.sh
DEPENDS gmic
COMMAND LD_LIBRARY_PATH=${GMIC_BINARIES_PATH} ${GMIC_BINARIES_PATH}/gmic ${CMAKE_SOURCE_DIR}/src/gmic_stdlib.gmic it ${CMAKE_SOURCE_DIR}/src/gmic_stdlib.gmic parse_cli bashcompletion > ${CMAKE_BINARY_DIR}/resources/gmic_bashcompletion.sh
)
add_custom_target(bashcompletion ALL DEPENDS ${CMAKE_BINARY_DIR}/resources/gmic_bashcompletion.sh)
install(FILES ${CMAKE_BINARY_DIR}/resources/gmic_bashcompletion.sh
DESTINATION ${CMAKE_INSTALL_DATADIR}/bash-completion/completions
RENAME gmic
)
endif()
include(CMakePackageConfigHelpers)
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/GmicConfig.cmake.in" "@PACKAGE_INIT@\ninclude(\${CMAKE_CURRENT_LIST_DIR}/GmicTargets.cmake)\n")
configure_package_config_file(
${CMAKE_CURRENT_BINARY_DIR}/GmicConfig.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/GmicConfig.cmake
INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/gmic
)
install(EXPORT GmicTargets DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/gmic)
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/GmicConfig.cmake DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/gmic)
feature_summary(WHAT ALL)