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Build: Add very limited experimental CMake support.

This does *NOT* replace the Autotools-based build system in
the foreseeable future. See the comment in the beginning
of CMakeLists.txt.

So far this has been tested only on GNU/Linux but I commit
it anyway to make it easier for others to test. Since I
haven't played much with CMake before, it's likely that
there are things that have been done in a silly or wrong
way and need to be fixed.
This commit is contained in:
Lasse Collin 2020-02-24 23:38:16 +02:00
parent 21bd4701fc
commit 7e3493d40e
7 changed files with 1151 additions and 0 deletions

643
CMakeLists.txt Normal file
View file

@ -0,0 +1,643 @@
#############################################################################
#
# Very limited CMake support for building some parts of XZ Utils
#
# For now, this is indented to be useful to build static or shared liblzma
# on Windows with MSVC (to avoid the need to maintain Visual Studio project
# files). Building liblzma on a few other platforms should work too but it
# is somewhat experimental and not as portable as using ./configure.
#
# On some platforms this builds also xz and xzdec, but these are
# highly experimental and meant for testing only:
# - No large file support on those 32-bit platforms that need it
# - No replacement getopt_long(), libc must have it
# - No sandboxing support
# - No translations
# - No xz symlinks are installed
#
# Other missing things:
# - No xzgrep or other scripts or their symlinks
# - No tests (no test failures either!)
#
# NOTE: Even if the code compiles without warnings, the end result may be
# different than via ./configure. Specifically, the list of #defines
# may be different (if so, probably this CMakeLists.txt got them wrong).
#
# This file provides the following installation components (if you only
# need liblzma, install only its components!):
# - liblzma_Runtime
# - liblzma_Development
# - xz (on some platforms only)
# - xzdec (on some platforms only)
#
# To find the target liblzma::liblzma from other packages, use the CONFIG
# option with find_package() to avoid a conflict with the FindLibLZMA module
# with case-insensitive file systems. For example, to require liblzma 5.2.5
# or a newer compatible version:
#
# find_package(liblzma 5.2.5 REQUIRED CONFIG)
# target_link_libraries(my_application liblzma::liblzma)
#
#############################################################################
#
# Author: Lasse Collin
#
# This file has been put into the public domain.
# You can do whatever you want with this file.
#
#############################################################################
cmake_minimum_required(VERSION 3.13...3.16 FATAL_ERROR)
include(CheckSymbolExists)
include(CheckStructHasMember)
include(cmake/tuklib_integer.cmake)
include(cmake/tuklib_cpucores.cmake)
include(cmake/tuklib_physmem.cmake)
include(cmake/tuklib_progname.cmake)
include(cmake/tuklib_mbstr.cmake)
# Get the package version from version.h into XZ_VERSION variable.
file(READ src/liblzma/api/lzma/version.h XZ_VERSION)
string(REGEX REPLACE
"^.*\n\
#define LZMA_VERSION_MAJOR ([0-9]+)\n\
#define LZMA_VERSION_MINOR ([0-9]+)\n\
#define LZMA_VERSION_PATCH ([0-9]+)\n\
.*$"
"\\1.\\2.\\3" XZ_VERSION ${XZ_VERSION})
# Among other things, this gives us variables xz_VERSION and xz_VERSION_MAJOR.
project(xz VERSION ${XZ_VERSION} LANGUAGES C)
# Definitions common to all targets:
add_compile_definitions(
# Package info:
PACKAGE_NAME="XZ Utils"
PACKAGE_BUGREPORT="lasse.collin@tukaani.org"
PACKAGE_URL="https://tukaani.org/xz/"
# Features:
HAVE_CHECK_CRC32
HAVE_CHECK_CRC64
HAVE_CHECK_SHA256
HAVE_DECODERS
HAVE_DECODER_ARM
HAVE_DECODER_ARMTHUMB
HAVE_DECODER_DELTA
HAVE_DECODER_IA64
HAVE_DECODER_LZMA1
HAVE_DECODER_LZMA2
HAVE_DECODER_POWERPC
HAVE_DECODER_SPARC
HAVE_DECODER_X86
HAVE_ENCODERS
HAVE_ENCODER_ARM
HAVE_ENCODER_ARMTHUMB
HAVE_ENCODER_DELTA
HAVE_ENCODER_IA64
HAVE_ENCODER_LZMA1
HAVE_ENCODER_LZMA2
HAVE_ENCODER_POWERPC
HAVE_ENCODER_SPARC
HAVE_ENCODER_X86
HAVE_MF_BT2
HAVE_MF_BT3
HAVE_MF_BT4
HAVE_MF_HC3
HAVE_MF_HC4
# Standard headers and types are available:
HAVE_STDBOOL_H
HAVE__BOOL
HAVE_STDINT_H
HAVE_INTTYPES_H
# Disable assert() checks when no build type has been specified. Non-empty
# build types like "Release" and "Debug" handle this by default.
$<$<CONFIG:>:NDEBUG>
)
# _GNU_SOURCE and such definitions. This specific macro is special since
# it also adds the definitions to CMAKE_REQUIRED_DEFINITIONS.
tuklib_use_system_extensions(ALL)
# This is needed by liblzma and xz.
tuklib_integer(ALL)
# Check for clock_gettime(). Do this before checking for threading so
# that we know there if CLOCK_MONOTONIC is available.
if(NOT WIN32 AND NOT DEFINED CACHE{HAVE_CLOCK_GETTIME})
check_symbol_exists(clock_gettime time.h HAVE_CLOCK_GETTIME)
if(NOT HAVE_CLOCK_GETTIME)
# With glibc <= 2.17 or Solaris 10 this needs librt.
unset(HAVE_CLOCK_GETTIME CACHE)
list(INSERT CMAKE_REQUIRED_LIBRARIES 0 rt)
check_symbol_exists(clock_gettime time.h HAVE_CLOCK_GETTIME)
# If it was found now, add it to all targets and keep it
# in CMAKE_REQUIRED_LIBRARIES for further tests too.
if(HAVE_CLOCK_GETTIME)
link_libraries(rt)
else()
list(REMOVE_AT CMAKE_REQUIRED_LIBRARIES 0)
endif()
endif()
if(HAVE_CLOCK_GETTIME)
# Check if CLOCK_MONOTONIC is available for clock_gettime().
check_symbol_exists(CLOCK_MONOTONIC time.h HAVE_DECL_CLOCK_MONOTONIC)
# HAVE_DECL_CLOCK_MONOTONIC should always be defined to 0 or 1
# when clock_gettime is available.
add_compile_definitions(
HAVE_CLOCK_GETTIME
HAVE_DECL_CLOCK_MONOTONIC=$<BOOL:${HAVE_DECL_CLOCK_MONOTONIC}>
)
endif()
endif()
# Threading support:
set(THREADS_PREFER_PTHREAD_FLAG TRUE)
find_package(Threads REQUIRED)
if(CMAKE_USE_WIN32_THREADS_INIT)
add_compile_definitions(MYTHREAD_VISTA)
else()
add_compile_definitions(MYTHREAD_POSIX)
# Check if pthread_condattr_setclock() exists to use CLOCK_MONOTONIC.
if(HAVE_DECL_CLOCK_MONOTONIC)
list(INSERT CMAKE_REQUIRED_LIBRARIES 0 ${CMAKE_THREAD_LIBS_INIT})
check_symbol_exists(pthread_condattr_setclock pthread.h
HAVE_PTHREAD_CONDATTR_SETCLOCK)
tuklib_add_definition_if(ALL HAVE_PTHREAD_CONDATTR_SETCLOCK)
endif()
endif()
# Options for new enough GCC or Clang on any arch or operating system:
if(CMAKE_C_COMPILER_ID MATCHES GNU|Clang)
# configure.ac has a long list but it won't be copied here:
add_compile_options(-Wall -Wextra)
endif()
#############################################################################
# liblzma
#############################################################################
option(BUILD_SHARED_LIBS "Build liblzma as a shared library instead of static")
add_library(liblzma
src/common/mythread.h
src/common/sysdefs.h
src/common/tuklib_common.h
src/common/tuklib_config.h
src/common/tuklib_cpucores.c
src/common/tuklib_cpucores.h
src/common/tuklib_integer.h
src/common/tuklib_physmem.c
src/common/tuklib_physmem.h
src/liblzma/api/lzma.h
src/liblzma/api/lzma/base.h
src/liblzma/api/lzma/bcj.h
src/liblzma/api/lzma/block.h
src/liblzma/api/lzma/check.h
src/liblzma/api/lzma/container.h
src/liblzma/api/lzma/delta.h
src/liblzma/api/lzma/filter.h
src/liblzma/api/lzma/hardware.h
src/liblzma/api/lzma/index.h
src/liblzma/api/lzma/index_hash.h
src/liblzma/api/lzma/lzma12.h
src/liblzma/api/lzma/stream_flags.h
src/liblzma/api/lzma/version.h
src/liblzma/api/lzma/vli.h
src/liblzma/check/check.c
src/liblzma/check/check.h
src/liblzma/check/crc32_fast.c
src/liblzma/check/crc32_table.c
src/liblzma/check/crc32_table_be.h
src/liblzma/check/crc32_table_le.h
src/liblzma/check/crc64_fast.c
src/liblzma/check/crc64_table.c
src/liblzma/check/crc64_table_be.h
src/liblzma/check/crc64_table_le.h
src/liblzma/check/crc_macros.h
src/liblzma/check/sha256.c
src/liblzma/common/alone_decoder.c
src/liblzma/common/alone_decoder.h
src/liblzma/common/alone_encoder.c
src/liblzma/common/auto_decoder.c
src/liblzma/common/block_buffer_decoder.c
src/liblzma/common/block_buffer_encoder.c
src/liblzma/common/block_buffer_encoder.h
src/liblzma/common/block_decoder.c
src/liblzma/common/block_decoder.h
src/liblzma/common/block_encoder.c
src/liblzma/common/block_encoder.h
src/liblzma/common/block_header_decoder.c
src/liblzma/common/block_header_encoder.c
src/liblzma/common/block_util.c
src/liblzma/common/common.c
src/liblzma/common/common.h
src/liblzma/common/easy_buffer_encoder.c
src/liblzma/common/easy_decoder_memusage.c
src/liblzma/common/easy_encoder.c
src/liblzma/common/easy_encoder_memusage.c
src/liblzma/common/easy_preset.c
src/liblzma/common/easy_preset.h
src/liblzma/common/file_info.c
src/liblzma/common/filter_buffer_decoder.c
src/liblzma/common/filter_buffer_encoder.c
src/liblzma/common/filter_common.c
src/liblzma/common/filter_common.h
src/liblzma/common/filter_decoder.c
src/liblzma/common/filter_decoder.h
src/liblzma/common/filter_encoder.c
src/liblzma/common/filter_encoder.h
src/liblzma/common/filter_flags_decoder.c
src/liblzma/common/filter_flags_encoder.c
src/liblzma/common/hardware_cputhreads.c
src/liblzma/common/hardware_physmem.c
src/liblzma/common/index.c
src/liblzma/common/index.h
src/liblzma/common/index_decoder.c
src/liblzma/common/index_decoder.h
src/liblzma/common/index_encoder.c
src/liblzma/common/index_encoder.h
src/liblzma/common/index_hash.c
src/liblzma/common/memcmplen.h
src/liblzma/common/outqueue.c
src/liblzma/common/outqueue.h
src/liblzma/common/stream_buffer_decoder.c
src/liblzma/common/stream_buffer_encoder.c
src/liblzma/common/stream_decoder.c
src/liblzma/common/stream_decoder.h
src/liblzma/common/stream_encoder.c
src/liblzma/common/stream_encoder_mt.c
src/liblzma/common/stream_flags_common.c
src/liblzma/common/stream_flags_common.h
src/liblzma/common/stream_flags_decoder.c
src/liblzma/common/stream_flags_encoder.c
src/liblzma/common/vli_decoder.c
src/liblzma/common/vli_encoder.c
src/liblzma/common/vli_size.c
src/liblzma/delta/delta_common.c
src/liblzma/delta/delta_common.h
src/liblzma/delta/delta_decoder.c
src/liblzma/delta/delta_decoder.h
src/liblzma/delta/delta_encoder.c
src/liblzma/delta/delta_encoder.h
src/liblzma/delta/delta_private.h
src/liblzma/lz/lz_decoder.c
src/liblzma/lz/lz_decoder.h
src/liblzma/lz/lz_encoder.c
src/liblzma/lz/lz_encoder.h
src/liblzma/lz/lz_encoder_hash.h
src/liblzma/lz/lz_encoder_hash_table.h
src/liblzma/lz/lz_encoder_mf.c
src/liblzma/lzma/fastpos.h
src/liblzma/lzma/fastpos_table.c
src/liblzma/lzma/lzma2_decoder.c
src/liblzma/lzma/lzma2_decoder.h
src/liblzma/lzma/lzma2_encoder.c
src/liblzma/lzma/lzma2_encoder.h
src/liblzma/lzma/lzma_common.h
src/liblzma/lzma/lzma_decoder.c
src/liblzma/lzma/lzma_decoder.h
src/liblzma/lzma/lzma_encoder.c
src/liblzma/lzma/lzma_encoder.h
src/liblzma/lzma/lzma_encoder_optimum_fast.c
src/liblzma/lzma/lzma_encoder_optimum_normal.c
src/liblzma/lzma/lzma_encoder_presets.c
src/liblzma/lzma/lzma_encoder_private.h
src/liblzma/rangecoder/price.h
src/liblzma/rangecoder/price_table.c
src/liblzma/rangecoder/range_common.h
src/liblzma/rangecoder/range_decoder.h
src/liblzma/rangecoder/range_encoder.h
src/liblzma/simple/arm.c
src/liblzma/simple/armthumb.c
src/liblzma/simple/ia64.c
src/liblzma/simple/powerpc.c
src/liblzma/simple/simple_coder.c
src/liblzma/simple/simple_coder.h
src/liblzma/simple/simple_decoder.c
src/liblzma/simple/simple_decoder.h
src/liblzma/simple/simple_encoder.c
src/liblzma/simple/simple_encoder.h
src/liblzma/simple/simple_private.h
src/liblzma/simple/sparc.c
src/liblzma/simple/x86.c
)
target_include_directories(liblzma PRIVATE
src/liblzma/api
src/liblzma/common
src/liblzma/check
src/liblzma/lz
src/liblzma/rangecoder
src/liblzma/lzma
src/liblzma/delta
src/liblzma/simple
src/common
)
target_link_libraries(liblzma Threads::Threads)
# Put the tuklib functions under the lzma_ namespace.
target_compile_definitions(liblzma PRIVATE TUKLIB_SYMBOL_PREFIX=lzma_)
tuklib_cpucores(liblzma)
tuklib_physmem(liblzma)
# immintrin.h:
include(CheckIncludeFile)
check_include_file(immintrin.h HAVE_IMMINTRIN_H)
if(HAVE_IMMINTRIN_H)
target_compile_definitions(liblzma PRIVATE HAVE_IMMINTRIN_H)
# SSE2 intrinsics:
include(CheckCSourceCompiles)
check_c_source_compiles("
#include <immintrin.h>
int main(void)
{
__m128i x = { 0 };
_mm_movemask_epi8(x);
return 0;
}
"
HAVE__MM_MOVEMASK_EPI8)
tuklib_add_definition_if(liblzma HAVE__MM_MOVEMASK_EPI8)
endif()
# Support -fvisiblity=hidden when building shared liblzma.
# These lines do nothing on Windows (even under Cygwin).
# HAVE_VISIBILITY should always be defined to 0 or 1.
if(BUILD_SHARED_LIBS)
set_target_properties(liblzma PROPERTIES C_VISIBILITY_PRESET hidden)
target_compile_definitions(liblzma PRIVATE HAVE_VISIBILITY=1)
else()
target_compile_definitions(liblzma PRIVATE HAVE_VISIBILITY=0)
endif()
if(WIN32)
if(BUILD_SHARED_LIBS)
# Add the Windows resource file for liblzma.dll.
target_sources(liblzma PRIVATE src/liblzma/liblzma_w32res.rc)
# Export the public API symbols with __declspec(dllexport).
target_compile_definitions(liblzma PRIVATE DLL_EXPORT)
else()
# Disable __declspec(dllimport) when linking against static liblzma.
target_compile_definitions(liblzma INTERFACE LZMA_API_STATIC)
endif()
elseif(CMAKE_SYSTEM_NAME MATCHES "^Linux$|^FreeBSD$")
# Symbol versioning for shared liblzma. This doesn't affect static builds.
target_link_options(liblzma PRIVATE
-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/src/liblzma/liblzma.map
)
set_target_properties(liblzma PROPERTIES
LINK_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/src/liblzma/liblzma.map
LINK_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/src/common/common_w32res.rc
)
endif()
set_target_properties(liblzma PROPERTIES
# At least for now the package versioning matches the rules used for
# shared library versioning (excluding development releases) so it is
# fine to use the package version here.
SOVERSION ${xz_VERSION_MAJOR}
VERSION ${xz_VERSION}
# It's liblzma.so or liblzma.dll, not libliblzma.so or lzma.dll.
# Avoid the name lzma.dll because it would conflict with LZMA SDK.
PREFIX ""
)
# Create liblzmaConfigVersion.cmake.
#
# FIXME: SameMajorVersion is correct for stable releases but it is wrong
# for development releases where each release may have incompatible changes.
include(CMakePackageConfigHelpers)
write_basic_package_version_file(
${CMAKE_CURRENT_BINARY_DIR}/liblzmaConfigVersion.cmake
VERSION ${liblzma_VERSION}
COMPATIBILITY SameMajorVersion)
# Create liblzmaConfig.cmake.
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/liblzmaConfig.cmake
"include(CMakeFindDependencyMacro)
set(THREADS_PREFER_PTHREAD_FLAG TRUE)
find_dependency(Threads)
include(\"\${CMAKE_CURRENT_LIST_DIR}/liblzmaTargets.cmake\")
")
# Set CMAKE_INSTALL_LIBDIR and friends.
include(GNUInstallDirs)
# Install the library binary. The INCLUDES specifies the include path that
# is exported for other projects to use but it doesn't install any files.
install(TARGETS liblzma EXPORT liblzmaTargets
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
COMPONENT liblzma_Runtime
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
COMPONENT liblzma_Runtime
NAMELINK_COMPONENT liblzma_Development
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
COMPONENT liblzma_Development
INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
# Install the liblzma API headers. These use a subdirectory so
# this has to be done as a separate step.
install(DIRECTORY src/liblzma/api/
COMPONENT liblzma_Development
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
FILES_MATCHING PATTERN "*.h")
# Install the CMake files that other packages can use to find liblzma.
set(liblzma_INSTALL_CMAKEDIR
${CMAKE_INSTALL_LIBDIR}/cmake/liblzma
CACHE STRING "Path to liblzma's .cmake files")
install(EXPORT liblzmaTargets
NAMESPACE liblzma::
FILE liblzmaTargets.cmake
DESTINATION ${liblzma_INSTALL_CMAKEDIR}
COMPONENT liblzma_Development)
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/liblzmaConfig.cmake
${CMAKE_CURRENT_BINARY_DIR}/liblzmaConfigVersion.cmake
DESTINATION ${liblzma_INSTALL_CMAKEDIR}
COMPONENT liblzma_Development)
#############################################################################
# getopt_long
#############################################################################
# The command line tools needs this.
check_symbol_exists(getopt_long getopt.h HAVE_GETOPT_LONG)
#############################################################################
# xzdec
#############################################################################
if(HAVE_GETOPT_LONG)
add_executable(xzdec
src/common/sysdefs.h
src/common/tuklib_common.h
src/common/tuklib_config.h
src/common/tuklib_exit.c
src/common/tuklib_exit.h
src/common/tuklib_gettext.h
src/common/tuklib_progname.c
src/common/tuklib_progname.h
src/xzdec/xzdec.c
)
target_include_directories(xzdec PRIVATE
src/common
src/liblzma/api
)
target_link_libraries(xzdec PRIVATE liblzma)
tuklib_progname(xzdec)
install(TARGETS xzdec
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
COMPONENT xzdec)
if(UNIX)
install(FILES src/xzdec/xzdec.1
DESTINATION ${CMAKE_INSTALL_MANDIR}/man1
COMPONENT xzdec)
endif()
endif()
#############################################################################
# xz
#############################################################################
if(NOT MSVC AND HAVE_GETOPT_LONG)
add_executable(xz
src/common/mythread.h
src/common/sysdefs.h
src/common/tuklib_common.h
src/common/tuklib_config.h
src/common/tuklib_exit.c
src/common/tuklib_exit.h
src/common/tuklib_gettext.h
src/common/tuklib_integer.h
src/common/tuklib_mbstr.h
src/common/tuklib_mbstr_fw.c
src/common/tuklib_mbstr_width.c
src/common/tuklib_open_stdxxx.c
src/common/tuklib_open_stdxxx.h
src/common/tuklib_progname.c
src/common/tuklib_progname.h
src/xz/args.c
src/xz/args.h
src/xz/coder.c
src/xz/coder.h
src/xz/file_io.c
src/xz/file_io.h
src/xz/hardware.c
src/xz/hardware.h
src/xz/list.c
src/xz/list.h
src/xz/main.c
src/xz/main.h
src/xz/message.c
src/xz/message.h
src/xz/mytime.c
src/xz/mytime.h
src/xz/options.c
src/xz/options.h
src/xz/private.h
src/xz/signals.c
src/xz/signals.h
src/xz/suffix.c
src/xz/suffix.h
src/xz/util.c
src/xz/util.h
)
target_include_directories(xz PRIVATE
src/common
src/liblzma/api
)
target_link_libraries(xz PRIVATE liblzma)
target_compile_definitions(xz PRIVATE ASSUME_RAM=128)
tuklib_progname(xz)
tuklib_mbstr(xz)
check_symbol_exists(optreset getopt.h HAVE_OPTRESET)
tuklib_add_definition_if(xz HAVE_OPTRESET)
check_symbol_exists(posix_fadvise fcntl.h HAVE_POSIX_FADVISE)
tuklib_add_definition_if(xz HAVE_POSIX_FADVISE)
# How to get file time:
check_struct_has_member("struct stat" st_atim.tv_nsec
"sys/types.h;sys/stat.h"
HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC)
if(HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC)
tuklib_add_definitions(xz HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC)
else()
check_struct_has_member("struct stat" st_atimespec.tv_nsec
"sys/types.h;sys/stat.h"
HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC)
if(HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC)
tuklib_add_definitions(xz HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC)
else()
check_struct_has_member("struct stat" st_atimensec
"sys/types.h;sys/stat.h"
HAVE_STRUCT_STAT_ST_ATIMENSEC)
tuklib_add_definition_if(xz HAVE_STRUCT_STAT_ST_ATIMENSEC)
endif()
endif()
# How to set file time:
check_symbol_exists(futimens "sys/types.h;sys/stat.h" HAVE_FUTIMENS)
if(HAVE_FUTIMENS)
tuklib_add_definitions(xz HAVE_FUTIMENS)
else()
check_symbol_exists(futimes "sys/time.h" HAVE_FUTIMES)
if(HAVE_FUTIMES)
tuklib_add_definitions(xz HAVE_FUTIMES)
else()
check_symbol_exists(futimesat "sys/time.h" HAVE_FUTIMESAT)
if(HAVE_FUTIMESAT)
tuklib_add_definitions(xz HAVE_FUTIMESAT)
else()
check_symbol_exists(utimes "sys/time.h" HAVE_UTIMES)
if(HAVE_UTIMES)
tuklib_add_definitions(xz HAVE_UTIMES)
else()
check_symbol_exists(_futime "sys/utime.h" HAVE__FUTIME)
if(HAVE__FUTIME)
tuklib_add_definitions(xz HAVE__FUTIME)
else()
check_symbol_exists(utime "utime.h" HAVE_UTIME)
tuklib_add_definition_if(xz HAVE_UTIME)
endif()
endif()
endif()
endif()
endif()
install(TARGETS xz
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
COMPONENT xz)
install(FILES src/xz/xz.1
DESTINATION ${CMAKE_INSTALL_MANDIR}/man1
COMPONENT xz)
endif()

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#
# tuklib_common.cmake - common functions and macros for tuklib_*.cmake files
#
# Author: Lasse Collin
#
# This file has been put into the public domain.
# You can do whatever you want with this file.
#
function(tuklib_add_definitions TARGET_OR_ALL DEFINITIONS)
if(TARGET_OR_ALL STREQUAL "ALL")
add_compile_definitions(${DEFINITIONS})
else()
target_compile_definitions(${TARGET_OR_ALL} PRIVATE ${DEFINITIONS})
endif()
endfunction()
function(tuklib_add_definition_if TARGET_OR_ALL VAR)
if(${VAR})
tuklib_add_definitions(${TARGET_OR_ALL} ${VAR})
endif()
endfunction()
# This is an over-simplified version of AC_USE_SYSTEM_EXTENSIONS in Autoconf
# or gl_USE_SYSTEM_EXTENSIONS in gnulib.
macro(tuklib_use_system_extensions TARGET_OR_ALL)
if(NOT WIN32)
# FIXME? The Solaris-specific __EXTENSIONS__ should be conditional
# even on Solaris. See gnulib: git log m4/extensions.m4.
# FIXME? gnulib and autoconf.git has lots of new stuff.
tuklib_add_definitions(${TARGET_OR_ALL}
_GNU_SOURCE
__EXTENSIONS__
_POSIX_PTHREAD_SEMANTICS
_TANDEM_SOURCE
_ALL_SOURCE
)
list(APPEND CMAKE_REQUIRED_DEFINITIONS
-D_GNU_SOURCE
-D__EXTENSIONS__
-D_POSIX_PTHREAD_SEMANTICS
-D_TANDEM_SOURCE
-D_ALL_SOURCE
)
endif()
endmacro()

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#
# tuklib_cpucores.cmake - see tuklib_cpucores.m4 for description and comments
#
# Author: Lasse Collin
#
# This file has been put into the public domain.
# You can do whatever you want with this file.
#
include(${CMAKE_CURRENT_LIST_DIR}/tuklib_common.cmake)
include(CheckCSourceCompiles)
include(CheckIncludeFile)
function(tuklib_cpucores_internal_check)
if(CACHE{TUKLIB_CPUCORES_DEFINITIONS})
return()
endif()
if(WIN32 OR CYGWIN)
# Nothing to do, the tuklib_cpucores.c handles it.
set(TUKLIB_CPUCORES_DEFINITIONS "" CACHE INTERNAL "")
return()
endif()
# glibc-based systems (GNU/Linux and GNU/kFreeBSD) have
# sched_getaffinity(). The CPU_COUNT() macro was added in glibc 2.9.
# glibc 2.9 is old enough that if someone uses the code on older glibc,
# the fallback to sysconf() should be good enough.
#
# NOTE: This required that _GNU_SOURCE is defined. We assume that whatever
# feature test macros the caller wants to use are already set in
# CMAKE_REQUIRED_DEFINES and in the target defines.
check_c_source_compiles("
#include <sched.h>
int main(void)
{
cpu_set_t cpu_mask;
sched_getaffinity(0, sizeof(cpu_mask), &cpu_mask);
return CPU_COUNT(&cpu_mask);
}
"
TUKLIB_CPUCORES_SCHED_GETAFFINITY)
if(TUKLIB_CPUCORES_SCHED_GETAFFINITY)
set(TUKLIB_CPUCORES_DEFINITIONS
"TUKLIB_CPUCORES_SCHED_GETAFFINITY"
CACHE INTERNAL "")
return()
endif()
# FreeBSD has both cpuset and sysctl. Look for cpuset first because
# it's a better approach.
#
# This test would match on GNU/kFreeBSD too but it would require
# -lfreebsd-glue when linking and thus in the current form this would
# fail on GNU/kFreeBSD. The above test for sched_getaffinity() matches
# on GNU/kFreeBSD so the test below should never run on that OS.
check_c_source_compiles("
#include <sys/param.h>
#include <sys/cpuset.h>
int main(void)
{
cpuset_t set;
cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1,
sizeof(set), &set);
return 0;
}
"
TUKLIB_CPUCORES_CPUSET)
if(TUKLIB_CPUCORES_CPUSET)
set(TUKLIB_CPUCORES_DEFINITIONS "HAVE_PARAM_H;TUKLIB_CPUCORES_CPUSET"
CACHE INTERNAL "")
return()
endif()
# On OS/2, both sysconf() and sysctl() pass the tests in this file,
# but only sysctl() works. On QNX it's the opposite: only sysconf() works
# (although it assumes that _POSIX_SOURCE, _XOPEN_SOURCE, and
# _POSIX_C_SOURCE are undefined or alternatively _QNX_SOURCE is defined).
#
# We test sysctl() first and intentionally break the sysctl() test on QNX
# so that sysctl() is never used on QNX.
check_include_file(sys/param.h HAVE_SYS_PARAM_H)
if(HAVE_SYS_PARAM_H)
list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_PARAM_H)
endif()
check_c_source_compiles("
#ifdef __QNX__
compile error
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#include <sys/sysctl.h>
int main(void)
{
int name[2] = { CTL_HW, HW_NCPU };
int cpus;
size_t cpus_size = sizeof(cpus);
sysctl(name, 2, &cpus, &cpus_size, NULL, 0);
return 0;
}
"
TUKLIB_CPUCORES_SYSCTL)
if(TUKLIB_CPUCORES_SYSCTL)
if(HAVE_SYS_PARAM_H)
set(TUKLIB_CPUCORES_DEFINITIONS
"HAVE_PARAM_H;TUKLIB_CPUCORES_SYSCTL"
CACHE INTERNAL "")
else()
set(TUKLIB_CPUCORES_DEFINITIONS
"TUKLIB_CPUCORES_SYSCTL"
CACHE INTERNAL "")
endif()
return()
endif()
# Many platforms support sysconf().
check_c_source_compiles("
#include <unistd.h>
int main(void)
{
long i;
#ifdef _SC_NPROCESSORS_ONLN
/* Many systems using sysconf() */
i = sysconf(_SC_NPROCESSORS_ONLN);
#else
/* IRIX */
i = sysconf(_SC_NPROC_ONLN);
#endif
return 0;
}
"
TUKLIB_CPUCORES_SYSCONF)
if(TUKLIB_CPUCORES_SYSCONF)
set(TUKLIB_CPUCORES_DEFINITIONS "TUKLIB_CPUCORES_SYSCONF"
CACHE INTERNAL "")
return()
endif()
# HP-UX
check_c_source_compiles("
#include <sys/param.h>
#include <sys/pstat.h>
int main(void)
{
struct pst_dynamic pst;
pstat_getdynamic(&pst, sizeof(pst), 1, 0);
(void)pst.psd_proc_cnt;
return 0;
}
"
TUKLIB_CPUCORES_PSTAT_GETDYNAMIC)
if(TUKLIB_CPUCORES_PSTAT_GETDYNAMIC)
set(TUKLIB_CPUCORES_DEFINITIONS "TUKLIB_CPUCORES_PSTAT_GETDYNAMIC"
CACHE INTERNAL "")
return()
endif()
endfunction()
function(tuklib_cpucores TARGET_OR_ALL)
message(STATUS "Checking how to detect the number of available CPU cores")
tuklib_cpucores_internal_check()
if(NOT DEFINED CACHE{TUKLIB_CPUCORES_DEFINITIONS})
set(TUKLIB_CPUCORES_FOUND 0 PARENT_SCOPE)
message(WARNING
"No method to detect the number of CPU cores was found")
else()
set(TUKLIB_CPUCORES_FOUND 1 PARENT_SCOPE)
tuklib_add_definitions(${TARGET_OR_ALL} ${TUKLIB_CPUCORES_DEFINITIONS})
endif()
endfunction()

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#
# tuklib_integer.cmake - see tuklib_integer.m4 for description and comments
#
# Author: Lasse Collin
#
# This file has been put into the public domain.
# You can do whatever you want with this file.
#
include(${CMAKE_CURRENT_LIST_DIR}/tuklib_common.cmake)
include(TestBigEndian)
include(CheckCSourceCompiles)
include(CheckIncludeFile)
include(CheckSymbolExists)
function(tuklib_integer TARGET_OR_ALL)
# Check for endianness. Unlike the Autoconf's AC_C_BIGENDIAN, this doesn't
# support Apple universal binaries. The CMake module will leave the
# variable unset so we can catch that situation here instead of continuing
# as if we were little endian.
test_big_endian(WORDS_BIGENDIAN)
if(NOT DEFINED WORDS_BIGENDIAN)
message(FATAL_ERROR "Cannot determine endianness")
endif()
tuklib_add_definition_if(${TARGET_OR_ALL} WORDS_BIGENDIAN)
# Look for a byteswapping method.
check_c_source_compiles("
int main(void)
{
__builtin_bswap16(1);
__builtin_bswap32(1);
__builtin_bswap64(1);
return 0;
}
"
HAVE___BUILTIN_BSWAPXX)
if(HAVE___BUILTIN_BSWAPXX)
tuklib_add_definitions(${TARGET_OR_ALL} HAVE___BUILTIN_BSWAPXX)
else()
check_include_file(byteswap.h HAVE_BYTESWAP_H)
if(HAVE_BYTESWAP_H)
tuklib_add_definitions(${TARGET_OR_ALL} HAVE_BYTESWAP_H)
check_symbol_exists(bswap_16 byteswap.h HAVE_BSWAP_16)
tuklib_add_definition_if(${TARGET_OR_ALL} HAVE_BSWAP_16)
check_symbol_exists(bswap_32 byteswap.h HAVE_BSWAP_32)
tuklib_add_definition_if(${TARGET_OR_ALL} HAVE_BSWAP_32)
check_symbol_exists(bswap_64 byteswap.h HAVE_BSWAP_64)
tuklib_add_definition_if(${TARGET_OR_ALL} HAVE_BSWAP_64)
else()
check_include_file(sys/endian.h HAVE_SYS_ENDIAN_H)
if(HAVE_SYS_ENDIAN_H)
tuklib_add_definitions(${TARGET_OR_ALL} HAVE_SYS_ENDIAN_H)
else()
check_include_file(sys/byteorder.h HAVE_SYS_BYTEORDER_H)
tuklib_add_definition_if(${TARGET_OR_ALL} HAVE_SYS_BYTEORDER_H)
endif()
endif()
endif()
# 16-bit and 32-bit unaligned access is fast on x86(-64),
# big endian PowerPC, and usually on 32/64-bit ARM too.
# There are others too and ARM could be a false match.
#
# Guess the default value for the option.
# CMake's ability to give info about the target arch seems bad.
# The the same arch can have different name depending on the OS.
#
# FIXME: The regex is based on guessing, not on factual information!
#
# NOTE: Compared to the Autoconf test, this lacks the GCC/Clang test
# on ARM and always assumes that unaligned is fast on ARM.
set(FAST_UNALIGNED_GUESS OFF)
if(CMAKE_SYSTEM_PROCESSOR MATCHES
[Xx3456]86|^[Xx]64|^[Aa][Mm][Dd]64|^[Aa][Rr][Mm]|^aarch|^powerpc|^ppc)
if(NOT WORDS_BIGENDIAN OR
NOT CMAKE_SYSTEM_PROCESSOR MATCHES ^powerpc|^ppc)
set(FAST_UNALIGNED_GUESS ON)
endif()
endif()
option(TUKLIB_FAST_UNALIGNED_ACCESS
"Enable if the system supports *fast* unaligned memory access with 16-bit and 32-bit integers."
${FAST_UNALIGNED_GUESS})
tuklib_add_definition_if(${TARGET_OR_ALL} TUKLIB_FAST_UNALIGNED_ACCESS)
# Unsafe type punning:
option(TUKLIB_USE_UNSAFE_TYPE_PUNNING
"This introduces strict aliasing violations and \
may result in broken code. However, this might improve performance \
in some cases, especially with old compilers \
(e.g. GCC 3 and early 4.x on x86, GCC < 6 on ARMv6 and ARMv7)."
OFF)
tuklib_add_definition_if(${TARGET_OR_ALL} TUKLIB_USE_UNSAFE_TYPE_PUNNING)
# Check for GCC/Clang __builtin_assume_aligned().
check_c_source_compiles(
"int main(void) { __builtin_assume_aligned(\"\", 1); return 0; }"
HAVE___BUILTIN_ASSUME_ALIGNED)
tuklib_add_definition_if(${TARGET_OR_ALL} HAVE___BUILTIN_ASSUME_ALIGNED)
endfunction()

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#
# tuklib_mbstr.cmake - see tuklib_mbstr.m4 for description and comments
#
# Author: Lasse Collin
#
# This file has been put into the public domain.
# You can do whatever you want with this file.
#
include(${CMAKE_CURRENT_LIST_DIR}/tuklib_common.cmake)
include(CheckSymbolExists)
function(tuklib_mbstr TARGET_OR_ALL)
check_symbol_exists(mbrtowc wchar.h HAVE_MBRTOWC)
tuklib_add_definition_if(${TARGET_OR_ALL} HAVE_MBRTOWC)
# NOTE: wcwidth() requires _GNU_SOURCE or _XOPEN_SOURCE on GNU/Linux.
check_symbol_exists(wcwidth wchar.h HAVE_WCWIDTH)
tuklib_add_definition_if(${TARGET_OR_ALL} HAVE_WCWIDTH)
endfunction()

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#
# tuklib_physmem.cmake - see tuklib_physmem.m4 for description and comments
#
# NOTE: Compared tuklib_physmem.m4, this lacks support for Tru64, IRIX, and
# Linux sysinfo() (usually sysconf() is used on GNU/Linux).
#
# Author: Lasse Collin
#
# This file has been put into the public domain.
# You can do whatever you want with this file.
#
include(${CMAKE_CURRENT_LIST_DIR}/tuklib_common.cmake)
include(CheckCSourceCompiles)
include(CheckIncludeFile)
function(tuklib_physmem_internal_check)
if(CACHE{TUKLIB_PHYSMEM_DEFINITIONS})
return()
endif()
# Shortcut on Windows:
if(WIN32 OR CYGWIN)
# Nothing to do, the tuklib_physmem.c handles it.
set(TUKLIB_PHYSMEM_DEFINITIONS "" CACHE INTERNAL "")
return()
endif()
# Full check for special cases:
check_c_source_compiles("
#if defined(_WIN32) || defined(__CYGWIN__) || defined(__OS2__) \
|| defined(__DJGPP__) || defined(__VMS) \
|| defined(AMIGA) || defined(__AROS__) || defined(__QNX__)
int main(void) { return 0; }
#else
compile error
#endif
"
TUKLIB_PHYSMEM_SPECIAL)
if(TUKLIB_PHYSMEM_SPECIAL)
# Nothing to do, the tuklib_physmem.c handles it.
set(TUKLIB_PHYSMEM_DEFINITIONS "" CACHE INTERNAL "")
return()
endif()
# Look for AIX-specific solution before sysconf(), because the test
# for sysconf() will pass on AIX but won't actually work
# (sysconf(_SC_PHYS_PAGES) compiles but always returns -1 on AIX).
check_c_source_compiles("
#include <sys/systemcfg.h>
int main(void)
{
(void)_system_configuration.physmem;
return 0;
}
"
TUKLIB_PHYSMEM_AIX)
if(TUKLIB_PHYSMEM_AIX)
set(TUKLIB_PHYSMEM_DEFINITIONS "TUKLIB_PHYSMEM_AIX" CACHE INTERNAL "")
return()
endif()
# sysconf()
check_c_source_compiles("
#include <unistd.h>
int main(void)
{
long i;
i = sysconf(_SC_PAGESIZE);
i = sysconf(_SC_PHYS_PAGES);
return 0;
}
"
TUKLIB_PHYSMEM_SYSCONF)
if(TUKLIB_PHYSMEM_SYSCONF)
set(TUKLIB_PHYSMEM_DEFINITIONS "TUKLIB_PHYSMEM_SYSCONF"
CACHE INTERNAL "")
return()
endif()
# sysctl()
check_include_file(sys/param.h HAVE_SYS_PARAM_H)
if(HAVE_SYS_PARAM_H)
list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_PARAM_H)
endif()
check_c_source_compiles("
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#include <sys/sysctl.h>
int main(void)
{
int name[2] = { CTL_HW, HW_PHYSMEM };
unsigned long mem;
size_t mem_ptr_size = sizeof(mem);
sysctl(name, 2, &mem, &mem_ptr_size, NULL, 0);
return 0;
}
"
TUKLIB_PHYSMEM_SYSCTL)
if(TUKLIB_PHYSMEM_SYSCTL)
if(HAVE_SYS_PARAM_H)
set(TUKLIB_PHYSMEM_DEFINITIONS
"HAVE_PARAM_H;TUKLIB_PHYSMEM_SYSCTL"
CACHE INTERNAL "")
else()
set(TUKLIB_PHYSMEM_DEFINITIONS
"TUKLIB_PHYSMEM_SYSCTL"
CACHE INTERNAL "")
endif()
return()
endif()
# HP-UX
check_c_source_compiles("
#include <sys/param.h>
#include <sys/pstat.h>
int main(void)
{
struct pst_static pst;
pstat_getstatic(&pst, sizeof(pst), 1, 0);
(void)pst.physical_memory;
(void)pst.page_size;
return 0;
}
"
TUKLIB_PHYSMEM_PSTAT_GETSTATIC)
if(TUKLIB_PHYSMEM_PSTAT_GETSTATIC)
set(TUKLIB_PHYSMEM_DEFINITIONS "TUKLIB_PHYSMEM_PSTAT_GETSTATIC"
CACHE INTERNAL "")
return()
endif()
endfunction()
function(tuklib_physmem TARGET_OR_ALL)
message(STATUS "Checking how to detect the amount of physical memory")
tuklib_physmem_internal_check()
if(NOT DEFINED CACHE{TUKLIB_PHYSMEM_DEFINITIONS})
set(TUKLIB_PHYSMEM_FOUND 0 PARENT_SCOPE)
message(WARNING
"No method to detect the amount of physical memory was found")
else()
set(TUKLIB_PHYSMEM_FOUND 1 PARENT_SCOPE)
tuklib_add_definitions(${TARGET_OR_ALL} ${TUKLIB_PHYSMEM_DEFINITIONS})
endif()
endfunction()

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#
# tuklib_progname.cmake - see tuklib_progname.m4 for description and comments
#
# Author: Lasse Collin
#
# This file has been put into the public domain.
# You can do whatever you want with this file.
#
include(${CMAKE_CURRENT_LIST_DIR}/tuklib_common.cmake)
include(CheckSymbolExists)
function(tuklib_progname TARGET_OR_ALL)
# NOTE: This glibc extension requires _GNU_SOURCE.
check_symbol_exists(program_invocation_name errno.h
HAVE_DECL_PROGRAM_INVOCATION_NAME)
tuklib_add_definition_if(${TARGET_OR_ALL}
HAVE_DECL_PROGRAM_INVOCATION_NAME)
endfunction()