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lz4/build/cmake/CMakeLists.txt

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CMake
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# CMake support for LZ4
#
# To the extent possible under law, the author(s) have dedicated all
# copyright and related and neighboring rights to this software to
# the public domain worldwide. This software is distributed without
# any warranty.
#
# For details, see <http://creativecommons.org/publicdomain/zero/1.0/>.
cmake_minimum_required(VERSION 3.5)
set(LZ4_TOP_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../..")
# Parse version information
function(parse_lz4_version VERSION_TYPE)
file(STRINGS "${LZ4_TOP_SOURCE_DIR}/lib/lz4.h" version_line REGEX "^#define LZ4_VERSION_${VERSION_TYPE} +([0-9]+).*$")
string(REGEX REPLACE "^#define LZ4_VERSION_${VERSION_TYPE} +([0-9]+).*$" "\\1" version_number "${version_line}")
set(LZ4_VERSION_${VERSION_TYPE} ${version_number} PARENT_SCOPE)
endfunction()
foreach(version_type IN ITEMS MAJOR MINOR RELEASE)
parse_lz4_version(${version_type})
endforeach()
set(LZ4_VERSION_STRING "${LZ4_VERSION_MAJOR}.${LZ4_VERSION_MINOR}.${LZ4_VERSION_RELEASE}")
mark_as_advanced(LZ4_VERSION_STRING LZ4_VERSION_MAJOR LZ4_VERSION_MINOR LZ4_VERSION_RELEASE)
message(STATUS "Creating build script for LZ4 version: ${LZ4_VERSION_STRING}")
project(LZ4 VERSION ${LZ4_VERSION_STRING} LANGUAGES C)
option(LZ4_BUILD_CLI "Build lz4 program" ON)
option(LZ4_BUILD_LEGACY_LZ4C "Build lz4c program with legacy argument support" OFF)
# Determine if LZ4 is being built as part of another project.
# If LZ4 is bundled in another project, we don't want to install anything.
# Default behavior can be overridden by setting the LZ4_BUNDLED_MODE variable.
if(NOT DEFINED LZ4_BUNDLED_MODE)
get_directory_property(LZ4_IS_SUBPROJECT PARENT_DIRECTORY)
if(LZ4_IS_SUBPROJECT)
set(LZ4_BUNDLED_MODE ON)
else()
set(LZ4_BUNDLED_MODE OFF)
endif()
endif()
mark_as_advanced(LZ4_BUNDLED_MODE)
# CPack
if(NOT LZ4_BUNDLED_MODE AND NOT CPack_CMake_INCLUDED)
set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "LZ4 compression library")
set(CPACK_PACKAGE_DESCRIPTION_FILE "${LZ4_TOP_SOURCE_DIR}/README.md")
set(CPACK_RESOURCE_FILE_LICENSE "${LZ4_TOP_SOURCE_DIR}/LICENSE")
set(CPACK_PACKAGE_VERSION_MAJOR ${LZ4_VERSION_MAJOR})
set(CPACK_PACKAGE_VERSION_MINOR ${LZ4_VERSION_MINOR})
set(CPACK_PACKAGE_VERSION_PATCH ${LZ4_VERSION_RELEASE})
include(CPack)
endif(NOT LZ4_BUNDLED_MODE AND NOT CPack_CMake_INCLUDED)
# Allow people to choose whether to build shared or static libraries
# via the BUILD_SHARED_LIBS option unless we are in bundled mode, in
# which case we always use static libraries.
include(CMakeDependentOption)
CMAKE_DEPENDENT_OPTION(BUILD_SHARED_LIBS "Build shared libraries" ON "NOT LZ4_BUNDLED_MODE" OFF)
CMAKE_DEPENDENT_OPTION(BUILD_STATIC_LIBS "Build static libraries" OFF "BUILD_SHARED_LIBS" ON)
if(NOT BUILD_SHARED_LIBS AND NOT BUILD_STATIC_LIBS)
message(FATAL_ERROR "Both BUILD_SHARED_LIBS and BUILD_STATIC_LIBS have been disabled")
endif()
set(LZ4_LIB_SOURCE_DIR "${LZ4_TOP_SOURCE_DIR}/lib")
set(LZ4_PROG_SOURCE_DIR "${LZ4_TOP_SOURCE_DIR}/programs")
include_directories("${LZ4_LIB_SOURCE_DIR}")
# CLI sources
file(GLOB LZ4_SOURCES
"${LZ4_LIB_SOURCE_DIR}/*.c")
file(GLOB LZ4_CLI_SOURCES
"${LZ4_PROG_SOURCE_DIR}/*.c")
list(APPEND LZ4_CLI_SOURCES ${LZ4_SOURCES}) # LZ4_CLI always use liblz4 sources directly.
# Whether to use position independent code for the static library. If
# we're building a shared library this is ignored and PIC is always
# used.
if(NOT DEFINED CMAKE_POSITION_INDEPENDENT_CODE OR CMAKE_POSITION_INDEPENDENT_CODE)
set(LZ4_POSITION_INDEPENDENT_LIB_DEFAULT ON)
else()
set(LZ4_POSITION_INDEPENDENT_LIB_DEFAULT OFF)
endif()
option(LZ4_POSITION_INDEPENDENT_LIB "Use position independent code for static library (if applicable)" ${LZ4_POSITION_INDEPENDENT_LIB_DEFAULT})
# liblz4
include(GNUInstallDirs)
set(LZ4_LIBRARIES_BUILT)
if(BUILD_SHARED_LIBS)
add_library(lz4_shared SHARED ${LZ4_SOURCES})
target_include_directories(lz4_shared
PUBLIC $<BUILD_INTERFACE:${LZ4_LIB_SOURCE_DIR}>
INTERFACE $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
set_target_properties(lz4_shared PROPERTIES
OUTPUT_NAME lz4
SOVERSION "${LZ4_VERSION_MAJOR}"
VERSION "${LZ4_VERSION_STRING}")
if(MSVC)
target_compile_definitions(lz4_shared PRIVATE
LZ4_DLL_EXPORT=1)
endif()
list(APPEND LZ4_LIBRARIES_BUILT lz4_shared)
endif()
if(BUILD_STATIC_LIBS)
set(STATIC_LIB_NAME lz4)
if (MSVC AND BUILD_SHARED_LIBS)
set(STATIC_LIB_NAME lz4_static)
endif()
add_library(lz4_static STATIC ${LZ4_SOURCES})
target_include_directories(lz4_static
PUBLIC $<BUILD_INTERFACE:${LZ4_LIB_SOURCE_DIR}>
INTERFACE $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
set_target_properties(lz4_static PROPERTIES
OUTPUT_NAME ${STATIC_LIB_NAME}
POSITION_INDEPENDENT_CODE ${LZ4_POSITION_INDEPENDENT_LIB})
list(APPEND LZ4_LIBRARIES_BUILT lz4_static)
endif()
# Add unified target.
add_library(lz4 INTERFACE)
list(APPEND LZ4_LIBRARIES_BUILT lz4)
if(BUILD_SHARED_LIBS)
target_link_libraries(lz4 INTERFACE lz4_shared)
else()
target_link_libraries(lz4 INTERFACE lz4_static)
endif()
# xxhash namespace
if(BUILD_SHARED_LIBS)
target_compile_definitions(lz4_shared PRIVATE
XXH_NAMESPACE=LZ4_)
endif()
if(BUILD_STATIC_LIBS)
target_compile_definitions(lz4_static PRIVATE
XXH_NAMESPACE=LZ4_)
endif()
# lz4
if (LZ4_BUILD_CLI)
set(LZ4_PROGRAMS_BUILT lz4cli)
add_executable(lz4cli ${LZ4_CLI_SOURCES})
set_target_properties(lz4cli PROPERTIES OUTPUT_NAME lz4)
endif()
# lz4c
if (LZ4_BUILD_LEGACY_LZ4C)
list(APPEND LZ4_PROGRAMS_BUILT lz4c)
add_executable(lz4c ${LZ4_CLI_SOURCES})
set_target_properties(lz4c PROPERTIES COMPILE_DEFINITIONS "ENABLE_LZ4C_LEGACY_OPTIONS")
endif()
# Extra warning flags
if(MSVC)
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /W4")
else()
include (CheckCCompilerFlag)
foreach (flag
# GCC-style
-pedantic-errors
-Wall
-Wextra
-Wundef
-Wcast-qual
-Wcast-align
-Wshadow
-Wswitch-enum
-Wdeclaration-after-statement
-Wstrict-prototypes
-Wpointer-arith)
# Because https://gcc.gnu.org/wiki/FAQ#wnowarning
string(REGEX REPLACE "\\-Wno\\-(.+)" "-W\\1" flag_to_test "${flag}")
string(REGEX REPLACE "[^a-zA-Z0-9]+" "_" test_name "CFLAG_${flag_to_test}")
check_c_compiler_flag("${ADD_COMPILER_FLAGS_PREPEND} ${flag_to_test}" ${test_name})
if(${test_name})
set(CMAKE_C_FLAGS_DEBUG "${flag} ${CMAKE_C_FLAGS_DEBUG}")
endif()
unset(test_name)
unset(flag_to_test)
endforeach (flag)
endif()
if(NOT LZ4_BUNDLED_MODE)
install(TARGETS ${LZ4_PROGRAMS_BUILT}
BUNDLE DESTINATION "${CMAKE_INSTALL_BINDIR}"
RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
install(TARGETS ${LZ4_LIBRARIES_BUILT}
EXPORT lz4Targets
LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
install(FILES
"${LZ4_LIB_SOURCE_DIR}/lz4.h"
"${LZ4_LIB_SOURCE_DIR}/lz4hc.h"
"${LZ4_LIB_SOURCE_DIR}/lz4frame.h"
"${LZ4_LIB_SOURCE_DIR}/lz4file.h"
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
install(FILES "${LZ4_PROG_SOURCE_DIR}/lz4.1"
DESTINATION "${CMAKE_INSTALL_MANDIR}/man1")
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/liblz4.pc"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
include(CMakePackageConfigHelpers)
write_basic_package_version_file(
"${CMAKE_CURRENT_BINARY_DIR}/lz4ConfigVersion.cmake"
VERSION ${LZ4_VERSION_STRING}
COMPATIBILITY SameMajorVersion)
set(LZ4_PKG_INSTALLDIR "${CMAKE_INSTALL_LIBDIR}/cmake/lz4")
configure_package_config_file(
"${CMAKE_CURRENT_LIST_DIR}/lz4Config.cmake.in"
"${CMAKE_CURRENT_BINARY_DIR}/lz4Config.cmake"
INSTALL_DESTINATION ${LZ4_PKG_INSTALLDIR})
export(EXPORT lz4Targets
FILE ${CMAKE_CURRENT_BINARY_DIR}/lz4Targets.cmake
NAMESPACE LZ4::)
install(EXPORT lz4Targets
FILE lz4Targets.cmake
NAMESPACE LZ4::
DESTINATION ${LZ4_PKG_INSTALLDIR})
install(FILES
${CMAKE_CURRENT_BINARY_DIR}/lz4Config.cmake
${CMAKE_CURRENT_BINARY_DIR}/lz4ConfigVersion.cmake
DESTINATION ${LZ4_PKG_INSTALLDIR})
# Install lz4cat and unlz4 symlinks on Unix systems
if(UNIX AND LZ4_BUILD_CLI)
foreach(cli_tool IN ITEMS lz4cat unlz4)
# Create a custom target for the symlink creation
add_custom_target("create_${cli_tool}_symlink" ALL
COMMAND ${CMAKE_COMMAND} -E create_symlink
$<TARGET_FILE_NAME:lz4cli> ${cli_tool}
COMMENT "Creating symlink for ${cli_tool}"
VERBATIM)
# Install the symlink into the binary installation directory
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${cli_tool}"
DESTINATION ${CMAKE_INSTALL_BINDIR}
RENAME ${cli_tool})
endforeach()
# create manpage aliases
foreach(f lz4cat unlz4)
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/${f}.1" ".so man1/lz4.1\n")
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${f}.1"
DESTINATION "${CMAKE_INSTALL_MANDIR}/man1")
endforeach()
endif(UNIX AND LZ4_BUILD_CLI)
endif(NOT LZ4_BUNDLED_MODE)
# pkg-config
set(PREFIX "${CMAKE_INSTALL_PREFIX}")
if("${CMAKE_INSTALL_FULL_LIBDIR}" STREQUAL "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}")
set(LIBDIR "\${prefix}/${CMAKE_INSTALL_LIBDIR}")
else()
set(LIBDIR "${CMAKE_INSTALL_FULL_LIBDIR}")
endif()
if("${CMAKE_INSTALL_FULL_INCLUDEDIR}" STREQUAL "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_INCLUDEDIR}")
set(INCLUDEDIR "\${prefix}/${CMAKE_INSTALL_INCLUDEDIR}")
else()
set(INCLUDEDIR "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
endif()
# for liblz4.pc substitution
set(VERSION ${LZ4_VERSION_STRING})
configure_file(${LZ4_LIB_SOURCE_DIR}/liblz4.pc.in liblz4.pc @ONLY)
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