#
IF(0) # CMake handles policy settings in its own build.
CMAKE_MINIMUM_REQUIRED(VERSION 2.8.12 FATAL_ERROR)
if(POLICY CMP0065)
cmake_policy(SET CMP0065 NEW) #3.4 don't use `-rdynamic` with executables
endif()
if(POLICY CMP0074)
cmake_policy(SET CMP0074 NEW) #3.12.0 `find_package()`` uses ``<PackageName>_ROOT`` variables.
endif()
ENDIF()
#
PROJECT(libarchive C)
#
SET(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/build/cmake")
if(NOT CMAKE_RUNTIME_OUTPUT_DIRECTORY)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${libarchive_BINARY_DIR}/bin)
endif()
IF(0) # CMake handles build type selection in its own build.
#
# Set the Build type for make based generators.
# You can choose following types:
# Debug : Debug build
# Release : Release build
# RelWithDebInfo : Release build with Debug Info
# MinSizeRel : Release Min Size build
IF(NOT CMAKE_BUILD_TYPE)
SET(CMAKE_BUILD_TYPE "Release" CACHE STRING "Build Type" FORCE)
ENDIF(NOT CMAKE_BUILD_TYPE)
# Set a value type to properly display CMAKE_BUILD_TYPE on GUI if the
# value type is "UNINITIALIZED".
GET_PROPERTY(cached_type CACHE CMAKE_BUILD_TYPE PROPERTY TYPE)
IF("${cached_type}" STREQUAL "UNINITIALIZED")
SET(CMAKE_BUILD_TYPE "${CMAKE_BUILD_TYPE}" CACHE STRING "Build Type" FORCE)
ENDIF("${cached_type}" STREQUAL "UNINITIALIZED")
# Check the Build Type.
IF(NOT "${CMAKE_BUILD_TYPE}"
MATCHES "^(Debug|Release|RelWithDebInfo|MinSizeRel)\$")
MESSAGE(FATAL_ERROR
"Unknown keyword for CMAKE_BUILD_TYPE: ${CMAKE_BUILD_TYPE}\n"
"Acceptable keywords: Debug,Release,RelWithDebInfo,MinSizeRel")
ENDIF(NOT "${CMAKE_BUILD_TYPE}"
MATCHES "^(Debug|Release|RelWithDebInfo|MinSizeRel)\$")
ENDIF()
# On MacOS, prefer MacPorts libraries to system libraries.
# I haven't come up with a compelling argument for this to be conditional.
list(APPEND CMAKE_PREFIX_PATH /opt/local)
# Enable @rpath in the install name.
# detail in "cmake --help-policy CMP0042"
SET(CMAKE_MACOSX_RPATH ON)
#
# Version - read from 'version' file.
#
FILE(STRINGS ${CMAKE_CURRENT_SOURCE_DIR}/build/version _version)
STRING(REGEX REPLACE
"^([0-9])[0-9][0-9][0-9][0-9][0-9][0-9][a-z]*$" "\\1" _major ${_version})
STRING(REGEX REPLACE
"^[0-9]([0-9][0-9][0-9])[0-9][0-9][0-9][a-z]*$" "\\1" _minor ${_version})
STRING(REGEX REPLACE
"^[0-9][0-9][0-9][0-9]([0-9][0-9][0-9])[a-z]*$" "\\1" _revision ${_version})
STRING(REGEX REPLACE
"^[0-9][0-9][0-9][0-9][0-9][0-9][0-9]([a-z]*)$" "\\1" _quality ${_version})
SET(_version_number ${_major}${_minor}${_revision})
STRING(REGEX REPLACE "[0]*([^0]*[0-9])$" "\\1" _trimmed_minor ${_minor})
STRING(REGEX REPLACE "[0]*([^0]*[0-9])$" "\\1" _trimmed_revision ${_revision})
#
SET(VERSION "${_major}.${_trimmed_minor}.${_trimmed_revision}${_quality}")
SET(BSDCPIO_VERSION_STRING "${VERSION}")
SET(BSDTAR_VERSION_STRING "${VERSION}")
SET(BSDCAT_VERSION_STRING "${VERSION}")
SET(LIBARCHIVE_VERSION_NUMBER "${_version_number}")
SET(LIBARCHIVE_VERSION_STRING "${VERSION}")
# INTERFACE_VERSION increments with every release
# libarchive 2.7 == interface version 9 = 2 + 7
# libarchive 2.8 == interface version 10 = 2 + 8
# libarchive 2.9 == interface version 11 = 2 + 9
# libarchive 3.0 == interface version 12
# libarchive 3.1 == interface version 13
math(EXPR INTERFACE_VERSION "13 + ${_minor}")
# Set SOVERSION == Interface version
# ?? Should there be more here ??
SET(SOVERSION "${INTERFACE_VERSION}")
# Enable CMAKE_PUSH_CHECK_STATE() and CMAKE_POP_CHECK_STATE() macros
# saving and restoring the state of the variables.
INCLUDE(${CMake_SOURCE_DIR}/Modules/CMakePushCheckState.cmake)
# Initialize the state of the variables. This initialization is not
# necessary but this shows you what value the variables initially have.
SET(CMAKE_REQUIRED_DEFINITIONS)
SET(CMAKE_REQUIRED_INCLUDES)
SET(CMAKE_REQUIRED_LIBRARIES)
SET(CMAKE_REQUIRED_FLAGS)
# Disable warnings to avoid changing 3rd party code.
IF(CMAKE_C_COMPILER_ID MATCHES
"^(GNU|LCC|Clang|AppleClang|IBMClang|XLClang|XL|VisualAge|SunPro|HP|Intel|IntelLLVM|NVHPC)$")
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
ELSEIF(CMAKE_C_COMPILER_ID STREQUAL "PathScale")
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -woffall")
ENDIF()
# Activate POSIX APIs.
if(CMAKE_SYSTEM_NAME MATCHES "^(Linux)$")
add_definitions(-D_DEFAULT_SOURCE -D_BSD_SOURCE)
string(APPEND CMAKE_REQUIRED_DEFINITIONS " -D_DEFAULT_SOURCE -D_BSD_SOURCE")
endif()
if(NOT CMAKE_SYSTEM_NAME MATCHES "BSD|Darwin|Windows")
add_definitions(-D_XOPEN_SOURCE=600)
string(APPEND CMAKE_REQUIRED_DEFINITIONS " -D_XOPEN_SOURCE=600")
endif()
IF(0) # CMake does not need flags specific to libarchive upstream development.
if (CMAKE_BUILD_TYPE STREQUAL "Debug")
OPTION(ENABLE_WERROR "Treat warnings as errors - default is ON for Debug, OFF otherwise." ON)
else ()
OPTION(ENABLE_WERROR "Treat warnings as errors - default is ON for Debug, OFF otherwise." OFF)
endif ()
# Especially for early development, we want to be a little
# aggressive about diagnosing build problems; this can get
# relaxed somewhat in final shipping versions.
IF (CMAKE_C_COMPILER_ID MATCHES "^GNU$" OR
CMAKE_C_COMPILER_ID MATCHES "^Clang$")
SET(CMAKE_REQUIRED_FLAGS "-Wall -Wformat -Wformat-security")
#################################################################
# Set compile flags for all build types.
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wformat -Wformat-security")
if (ENABLE_WERROR)
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
endif ()
#################################################################
# Set compile flags for debug build.
# This is added into CMAKE_C_FLAGS when CMAKE_BUILD_TYPE is "Debug"
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -g")
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wextra")
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wunused")
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wshadow")
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wmissing-prototypes")
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wcast-qual")
# Ideally this will be a compile/link time check, yet there's no obvious way
# how considering how old our minimum required cmake version is. The official
# cmake.org side does not host the manual pages even. Normally we can use
# either of the following two, yet neither is supported as of 3.0.2
# - check_linker_flag - does not exist
# - try_compile - does not support linker flags
#
# The CI fails with this on MacOS
IF(NOT CMAKE_SYSTEM_NAME MATCHES "Darwin")
# Place the functions and data into separate sections, allowing the linker
# to garbage collect the unused ones.
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ffunction-sections -fdata-sections")
SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--gc-sections")
SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--gc-sections")
# Printing the discarded section is "too much", so enable on demand.
#SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} -Wl,--print-gc-sections")
#SET(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_SHARED_LINKER_FLAGS_DEBUG} -Wl,--print-gc-sections")
ENDIF(NOT CMAKE_SYSTEM_NAME MATCHES "Darwin")
ENDIF (CMAKE_C_COMPILER_ID MATCHES "^GNU$" OR
CMAKE_C_COMPILER_ID MATCHES "^Clang$")
IF (CMAKE_C_COMPILER_ID MATCHES "^XL$")
SET(CMAKE_C_COMPILER "xlc_r")
SET(CMAKE_REQUIRED_FLAGS "-qflag=e:e -qformat=sec")
#################################################################
# Set compile flags for all build types.
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -qflag=e:e -qformat=sec")
if (ENABLE_WERROR)
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -qhalt=w")
endif ()
#################################################################
# Set compile flags for debug build.
# This is added into CMAKE_C_FLAGS when CMAKE_BUILD_TYPE is "Debug"
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -g")
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -qflag=w:w")
SE