############################################################################# # # Very limited CMake support for building some parts of XZ Utils # # For now, this is intended 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 sandboxing support # - No translations # # Other missing things: # - No xzgrep or other scripts or their symlinks # - No xz tests (liblzma tests only) # # 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...3.27 FATAL_ERROR) include(CMakePushCheckState) include(CheckIncludeFile) include(CheckSymbolExists) include(CheckStructHasMember) include(CheckCSourceCompiles) 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) # We need a compiler that supports enough C99 or newer (variable-length arrays # aren't needed, those are optional in C17). Setting CMAKE_C_STANDARD here # makes it the default for all targets. It doesn't affect the INTERFACE so # liblzma::liblzma won't end up with INTERFACE_COMPILE_FEATURES "c_std_99" # (the API headers are C89 and C++ compatible). set(CMAKE_C_STANDARD 99) set(CMAKE_C_STANDARD_REQUIRED ON) # On Apple OSes, don't build executables as bundles: set(CMAKE_MACOSX_BUNDLE OFF) # windres from GNU binutils can be tricky with command line arguments # that contain spaces or other funny characters. Unfortunately we need # a space in PACKAGE_NAME. Using \x20 to encode the US-ASCII space seems # to work in both cmd.exe and /bin/sh. # # However, even \x20 isn't enough in all situations, resulting in # "syntax error" from windres. Using --use-temp-file prevents windres # from using popen() and this seems to fix the problem. # # llvm-windres from Clang/LLVM 16.0.6 and older: The \x20 results # in "XZx20Utils" in the compiled binary. The option --use-temp-file # makes no difference. # # llvm-windres 17.0.0 and later: It emulates GNU windres more accurately, so # the workarounds used with GNU windres must be used with llvm-windres too. # # CMake 3.27 doesn't have CMAKE_RC_COMPILER_ID so we rely on # CMAKE_C_COMPILER_ID. if(WIN32 AND (CMAKE_C_COMPILER_ID STREQUAL "GNU" OR ( CMAKE_C_COMPILER_ID STREQUAL "Clang" AND CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL "17"))) # Use workarounds with GNU windres and llvm-windres >= 17.0.0. The \x20 # in PACKAGE_NAME works with gcc and clang too so we don't need to worry # how to pass different flags to windres and the C compiler. string(APPEND CMAKE_RC_FLAGS " --use-temp-file") set(PACKAGE_NAME "XZ\\x20Utils") else() # Elsewhere a space is safe. This also keeps things compatible with # EBCDIC in case CMake-based build is ever done on such a system. set(PACKAGE_NAME "XZ Utils") endif() # Definitions common to all targets: add_compile_definitions( # Package info: PACKAGE_NAME="${PACKAGE_NAME}" PACKAGE_BUGREPORT="xz@tukaani.org" PACKAGE_URL="https://tukaani.org/xz/" # Standard headers and types are available: HAVE_STDBOOL_H HAVE__BOOL HAVE_STDINT_H HAVE_INTTYPES_H # Always enable CRC32 since liblzma should never build without it. HAVE_CHECK_CRC32 # Disable assert() checks when no build type has been specified. Non-empty # build types like "Release" and "Debug" handle this by default. $<$:NDEBUG> ) ###################### # System definitions # ###################### # _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) 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. # Add librt for the next check for HAVE_CLOCK_GETTIME. If it is # found after including the library, we know that librt is required. list(INSERT CMAKE_REQUIRED_LIBRARIES 0 rt) check_symbol_exists(clock_gettime time.h HAVE_CLOCK_GETTIME_LIBRT) # If it was found now, add librt to all targets and keep it in # CMAKE_REQUIRED_LIBRARIES for further tests too. if(HAVE_CLOCK_GETTIME_LIBRT) link_libraries(rt) else() list(REMOVE_AT CMAKE_REQUIRED_LIBRARIES 0) endif() endif() if(HAVE_CLOCK_GETTIME OR HAVE_CLOCK_GETTIME_LIBRT) add_compile_definitions(HAVE_CLOCK_GETTIME) # Check if CLOCK_MONOTONIC is available for clock_gettime(). check_symbol_exists(CLOCK_MONOTONIC time.h HAVE_CLOCK_MONOTONIC) tuklib_add_definition_if(ALL HAVE_CLOCK_MONOTONIC) 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_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/crc_macros.h src/liblzma/common/block_util.c src/liblzma/common/common.c src/liblzma/common/common.h src/liblzma/common/easy_preset.c src/liblzma/common/easy_preset.h src/liblzma/common/filter_common.c src/liblzma/common/filter_common.h src/liblzma/common/hardware_physmem.c src/liblzma/common/index.c src/liblzma/common/index.h src/liblzma/common/memcmplen.h src/liblzma/common/stream_flags_common.c src/liblzma/common/stream_flags_common.h src/liblzma/common/string_conversion.c src/liblzma/common/vli_size.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 ) ###################### # Size optimizations # ###################### option(ENABLE_SMALL "Reduce code size at expense of speed. \ This may be useful together with CMAKE_BUILD_TYPE=MinSizeRel.") if(ENABLE_SMALL) add_compile_definitions(HAVE_SMALL) endif() ########## # Checks # ########## set(ADDITIONAL_SUPPORTED_CHECKS crc64 sha256) set(ADDITIONAL_CHECK_TYPES "${ADDITIONAL_SUPPORTED_CHECKS}" CACHE STRING "Additional check types to support (crc32 is always built)") foreach(CHECK IN LISTS ADDITIONAL_CHECK_TYPES) if(NOT CHECK IN_LIST ADDITIONAL_SUPPORTED_CHECKS) message(SEND_ERROR "'${CHECK}' is not a supported check type") endif() endforeach() if(ENABLE_SMALL) target_sources(liblzma PRIVATE src/liblzma/check/crc32_small.c) else() target_sources(liblzma PRIVATE 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 ) endif() if("crc64" IN_LIST ADDITIONAL_CHECK_TYPES) add_compile_definitions("HAVE_CHECK_CRC64") if(ENABLE_SMALL) target_sources(liblzma PRIVATE src/liblzma/check/crc64_small.c) else() target_sources(liblzma PRIVATE 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 ) endif() endif() if("sha256" IN_LIST ADDITIONAL_CHECK_TYPES) add_compile_definitions("HAVE_CHECK_SHA256") target_sources(liblzma PRIVATE src/liblzma/check/sha256.c) endif() ################# # Match finders # ################# set(SUPPORTED_MATCH_FINDERS hc3 hc4 bt2 bt3 bt4) set(MATCH_FINDERS "${SUPPORTED_MATCH_FINDERS}" CACHE STRING "Match finders to support (at least one is required for LZMA1 or LZMA2)") foreach(MF IN LISTS MATCH_FINDERS) if(MF IN_LIST SUPPORTED_MATCH_FINDERS) string(TOUPPER "${MF}" MF_UPPER) add_compile_definitions("HAVE_MF_${MF_UPPER}") else() message(SEND_ERROR "'${MF}' is not a supported match finder") endif() endforeach() ############# # Threading # ############# # Supported thread methods: # ON - autodetect the best threading method. The autodetection will # prefer Windows threading (win95 or vista) over posix if both are # available. vista threads will be used over win95 unless it is a # 32-bit build. # OFF - Disable threading. # posix - Use posix threading, or throw an error if not available. # win95 - Use Windows win95 threading, or throw an error if not available. # vista - Use Windows vista threading, or throw an error if not available. set(SUPPORTED_THREAD_METHODS ON OFF posix win95 vista) set(ENABLE_THREADS ON CACHE STRING "Threading method type to support. Set to 'OFF' to disable threading") # Create dropdown in CMake GUI since only 1 threading method is possible # to select in a build. set_property(CACHE ENABLE_THREADS PROPERTY STRINGS "${SUPPORTED_THREAD_METHODS}") # This is a flag variable set when win95 threads are used. We must ensure # the combination of enable_small and win95 threads is not used without a # compiler supporting attribute __constructor__. set(USE_WIN95_THREADS OFF) if(NOT ENABLE_THREADS IN_LIST SUPPORTED_THREAD_METHODS) message(SEND_ERROR "'${ENABLE_THREADS}' is not a supported thread type") endif() if(ENABLE_THREADS) # Also set THREADS_PREFER_PTHREAD_FLAG since the flag has no effect # for Windows threading. set(THREADS_PREFER_PTHREAD_FLAG TRUE) find_package(Threads REQUIRED) # If both Windows and posix threading are available, prefer Windows. # Note that on Cygwin CMAKE_USE_WIN32_THREADS_INIT is false. if(CMAKE_USE_WIN32_THREADS_INIT AND NOT ENABLE_THREADS STREQUAL "posix") if(ENABLE_THREADS STREQUAL "win95" OR (ENABLE_THREADS STREQUAL "ON" AND CMAKE_SIZEOF_VOID_P EQUAL 4)) # Use Windows 95 (and thus XP) compatible threads. # This avoids use of features that were added in # Windows Vista. This is used for 32-bit x86 builds for # compatibility reasons since it makes no measurable difference # in performance compared to Vista threads. set(USE_WIN95_THREADS ON) add_compile_definitions(MYTHREAD_WIN95) else() add_compile_definitions(MYTHREAD_VISTA) endif() elseif(CMAKE_USE_PTHREADS_INIT) if(ENABLE_THREADS STREQUAL "posix" OR ENABLE_THREADS STREQUAL "ON") # Overwrite ENABLE_THREADS in case it was set to "ON". # The threading library only needs to be explicitly linked # for posix threads, so this is needed for creating # liblzma-config.cmake later. set(ENABLE_THREADS "posix") target_link_libraries(liblzma Threads::Threads) add_compile_definitions(MYTHREAD_POSIX) # Check if pthread_condattr_setclock() exists to # use CLOCK_MONOTONIC. if(HAVE_CLOCK_MONOTONIC) list(INSERT CMAKE_REQUIRED_LIBRARIES 0 "${CMAKE_THREAD_LIBS_INIT}") check_symbol_exists(pthread_condattr_setclock pthread.h HAVE_PTHREAD_CONDATTR_SETCLOCK) tuklib_add_definition_if(ALL HAVE_PTHREAD_CONDATTR_SETCLOCK) endif() else() message(SEND_ERROR "Windows thread method requested, but a compatible " "library could not be found") endif() else() message(SEND_ERROR "No supported threading library found") endif() target_sources(liblzma PRIVATE src/common/tuklib_cpucores.c src/common/tuklib_cpucores.h src/liblzma/common/hardware_cputhreads.c src/liblzma/common/outqueue.c src/liblzma/common/outqueue.h ) endif() ############ # Encoders # ############ set(SIMPLE_FILTERS x86 arm armthumb arm64 powerpc ia64 sparc ) # The SUPPORTED_FILTERS are shared between Encoders and Decoders # since only lzip does not appear in both lists. lzip is a special # case anyway, so it is handled separately in the Decoders section. set(SUPPORTED_FILTERS lzma1 lzma2 delta "${SIMPLE_FILTERS}" ) set(ENCODERS "${SUPPORTED_FILTERS}" CACHE STRING "Encoders to support") # If LZMA2 is enabled, then LZMA1 must also be enabled. if(NOT "lzma1" IN_LIST ENCODERS AND "lzma2" IN_LIST ENCODERS) message(SEND_ERROR "LZMA2 encoder requires that LZMA1 is also enabled") endif() # If LZMA1 is enabled, then at least one match finder must be enabled. if(MATCH_FINDERS STREQUAL "" AND "lzma1" IN_LIST ENCODERS) message(SEND_ERROR "At least 1 match finder is required for an " "LZ-based encoder") endif() set(HAVE_DELTA_CODER OFF) set(SIMPLE_ENCODERS OFF) set(HAVE_ENCODERS OFF) foreach(ENCODER IN LISTS ENCODERS) if(ENCODER IN_LIST SUPPORTED_FILTERS) set(HAVE_ENCODERS ON) if(NOT SIMPLE_ENCODERS AND ENCODER IN_LIST SIMPLE_FILTERS) set(SIMPLE_ENCODERS ON) endif() string(TOUPPER "${ENCODER}" ENCODER_UPPER) add_compile_definitions("HAVE_ENCODER_${ENCODER_UPPER}") else() message(SEND_ERROR "'${ENCODER}' is not a supported encoder") endif() endforeach() if(HAVE_ENCODERS) add_compile_definitions(HAVE_ENCODERS) target_sources(liblzma PRIVATE src/liblzma/common/alone_encoder.c src/liblzma/common/block_buffer_encoder.c src/liblzma/common/block_buffer_encoder.h src/liblzma/common/block_encoder.c src/liblzma/common/block_encoder.h src/liblzma/common/block_header_encoder.c src/liblzma/common/easy_buffer_encoder.c src/liblzma/common/easy_encoder.c src/liblzma/common/easy_encoder_memusage.c src/liblzma/common/filter_buffer_encoder.c src/liblzma/common/filter_encoder.c src/liblzma/common/filter_encoder.h src/liblzma/common/filter_flags_encoder.c src/liblzma/common/index_encoder.c src/liblzma/common/index_encoder.h src/liblzma/common/stream_buffer_encoder.c src/liblzma/common/stream_encoder.c src/liblzma/common/stream_flags_encoder.c src/liblzma/common/vli_encoder.c ) if(ENABLE_THREADS) target_sources(liblzma PRIVATE src/liblzma/common/stream_encoder_mt.c ) endif() if(SIMPLE_ENCODERS) target_sources(liblzma PRIVATE src/liblzma/simple/simple_encoder.c src/liblzma/simple/simple_encoder.h ) endif() if("lzma1" IN_LIST ENCODERS) target_sources(liblzma PRIVATE 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_private.h src/liblzma/lzma/fastpos.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/rangecoder/price.h src/liblzma/rangecoder/price_table.c src/liblzma/rangecoder/range_encoder.h ) if(NOT ENABLE_SMALL) target_sources(liblzma PRIVATE src/liblzma/lzma/fastpos_table.c) endif() endif() if("lzma2" IN_LIST ENCODERS) target_sources(liblzma PRIVATE src/liblzma/lzma/lzma2_encoder.c src/liblzma/lzma/lzma2_encoder.h ) endif() if("delta" IN_LIST ENCODERS) set(HAVE_DELTA_CODER ON) target_sources(liblzma PRIVATE src/liblzma/delta/delta_encoder.c src/liblzma/delta/delta_encoder.h ) endif() endif() ############ # Decoders # ############ set(DECODERS "${SUPPORTED_FILTERS}" CACHE STRING "Decoders to support") set(SIMPLE_DECODERS OFF) set(HAVE_DECODERS OFF) foreach(DECODER IN LISTS DECODERS) if(DECODER IN_LIST SUPPORTED_FILTERS) set(HAVE_DECODERS ON) if(NOT SIMPLE_DECODERS AND DECODER IN_LIST SIMPLE_FILTERS) set(SIMPLE_DECODERS ON) endif() string(TOUPPER "${DECODER}" DECODER_UPPER) add_compile_definitions("HAVE_DECODER_${DECODER_UPPER}") else() message(SEND_ERROR "'${DECODER}' is not a supported decoder") endif() endforeach() if(HAVE_DECODERS) add_compile_definitions(HAVE_DECODERS) target_sources(liblzma PRIVATE src/liblzma/common/alone_decoder.c src/liblzma/common/alone_decoder.h src/liblzma/common/auto_decoder.c src/liblzma/common/block_buffer_decoder.c src/liblzma/common/block_decoder.c src/liblzma/common/block_decoder.h src/liblzma/common/block_header_decoder.c src/liblzma/common/easy_decoder_memusage.c src/liblzma/common/file_info.c src/liblzma/common/filter_buffer_decoder.c src/liblzma/common/filter_decoder.c src/liblzma/common/filter_decoder.h src/liblzma/common/filter_flags_decoder.c src/liblzma/common/index_decoder.c src/liblzma/common/index_decoder.h src/liblzma/common/index_hash.c src/liblzma/common/stream_buffer_decoder.c src/liblzma/common/stream_decoder.c src/liblzma/common/stream_flags_decoder.c src/liblzma/common/stream_decoder.h src/liblzma/common/vli_decoder.c ) if(ENABLE_THREADS) target_sources(liblzma PRIVATE src/liblzma/common/stream_decoder_mt.c ) endif() if(SIMPLE_DECODERS) target_sources(liblzma PRIVATE src/liblzma/simple/simple_decoder.c src/liblzma/simple/simple_decoder.h ) endif() if("lzma1" IN_LIST DECODERS) target_sources(liblzma PRIVATE src/liblzma/lzma/lzma_decoder.c src/liblzma/lzma/lzma_decoder.h src/liblzma/rangecoder/range_decoder.h src/liblzma/lz/lz_decoder.c src/liblzma/lz/lz_decoder.h ) endif() if("lzma2" IN_LIST DECODERS) target_sources(liblzma PRIVATE src/liblzma/lzma/lzma2_decoder.c src/liblzma/lzma/lzma2_decoder.h ) endif() if("delta" IN_LIST DECODERS) set(HAVE_DELTA_CODER ON) target_sources(liblzma PRIVATE src/liblzma/delta/delta_decoder.c src/liblzma/delta/delta_decoder.h ) endif() endif() # Some sources must appear if the filter is configured as either # an encoder or decoder. if("lzma1" IN_LIST ENCODERS OR "lzma1" IN_LIST DECODERS) target_sources(liblzma PRIVATE src/liblzma/rangecoder/range_common.h src/liblzma/lzma/lzma_encoder_presets.c src/liblzma/lzma/lzma_common.h ) endif() if(HAVE_DELTA_CODER) target_sources(liblzma PRIVATE src/liblzma/delta/delta_common.c src/liblzma/delta/delta_common.h src/liblzma/delta/delta_private.h ) endif() if(SIMPLE_ENCODERS OR SIMPLE_DECODERS) target_sources(liblzma PRIVATE src/liblzma/simple/simple_coder.c src/liblzma/simple/simple_coder.h src/liblzma/simple/simple_private.h ) endif() foreach(SIMPLE_CODER IN LISTS SIMPLE_FILTERS) if(SIMPLE_CODER IN_LIST ENCODERS OR SIMPLE_CODER IN_LIST DECODERS) target_sources(liblzma PRIVATE "src/liblzma/simple/${SIMPLE_CODER}.c") endif() endforeach() ############# # MicroLZMA # ############# option(MICROLZMA_ENCODER "MicroLZMA encoder (needed by specific applications only)" ON) option(MICROLZMA_DECODER "MicroLZMA decoder (needed by specific applications only)" ON) if(MICROLZMA_ENCODER) if(NOT "lzma1" IN_LIST ENCODERS) message(SEND_ERROR "The LZMA1 encoder is required to support the " "MicroLZMA encoder") endif() target_sources(liblzma PRIVATE src/liblzma/common/microlzma_encoder.c) endif() if(MICROLZMA_DECODER) if(NOT "lzma1" IN_LIST DECODERS) message(SEND_ERROR "The LZMA1 decoder is required to support the " "MicroLZMA decoder") endif() target_sources(liblzma PRIVATE src/liblzma/common/microlzma_decoder.c) endif() ############################# # lzip (.lz) format support # ############################# option(LZIP_DECODER "Support lzip decoder" ON) if(LZIP_DECODER) # If lzip decoder support is requested, make sure LZMA1 decoder is enabled. if(NOT "lzma1" IN_LIST DECODERS) message(SEND_ERROR "The LZMA1 decoder is required to support the " "lzip decoder") endif() add_compile_definitions(HAVE_LZIP_DECODER) target_sources(liblzma PRIVATE src/liblzma/common/lzip_decoder.c src/liblzma/common/lzip_decoder.h ) endif() ### # Put the tuklib functions under the lzma_ namespace. target_compile_definitions(liblzma PRIVATE TUKLIB_SYMBOL_PREFIX=lzma_) tuklib_cpucores(liblzma) tuklib_physmem(liblzma) # While liblzma can be built without tuklib_cpucores or tuklib_physmem # modules, the liblzma API functions lzma_cputhreads() and lzma_physmem() # will then be useless (which isn't too bad but still unfortunate). Since # I expect the CMake-based builds to be only used on systems that are # supported by these tuklib modules, problems with these tuklib modules # are considered a hard error for now. This hopefully helps to catch bugs # in the CMake versions of the tuklib checks. if(NOT TUKLIB_CPUCORES_FOUND OR NOT TUKLIB_PHYSMEM_FOUND) # Use SEND_ERROR instead of FATAL_ERROR. If someone reports a bug, # seeing the results of the remaining checks can be useful too. message(SEND_ERROR "tuklib_cpucores() or tuklib_physmem() failed. " "Unless you really are building for a system where these " "modules are not supported (unlikely), this is a bug in the " "included cmake/tuklib_*.cmake files that should be fixed. " "To build anyway, edit this CMakeLists.txt to ignore this error.") endif() # Check for __attribute__((__constructor__)) support. # This needs -Werror because some compilers just warn # about this being unsupported. cmake_push_check_state() set(CMAKE_REQUIRED_FLAGS "-Werror") check_c_source_compiles(" __attribute__((__constructor__)) static void my_constructor_func(void) { return; } int main(void) { return 0; } " HAVE_FUNC_ATTRIBUTE_CONSTRUCTOR) cmake_pop_check_state() tuklib_add_definition_if(liblzma HAVE_FUNC_ATTRIBUTE_CONSTRUCTOR) # The Win95 threading lacks a thread-safe one-time initialization function. # The one-time initialization is needed for crc32_small.c and crc64_small.c # create the CRC tables. So if small mode is enabled, the threading mode is # win95, and the compiler does not support attribute constructor, then we # would end up with a multithreaded build that is thread-unsafe. As a # result this configuration is not allowed. if(USE_WIN95_THREADS AND ENABLE_SMALL AND NOT HAVE_FUNC_ATTRIBUTE_CONSTRUCTOR) message(SEND_ERROR "Threading method win95 and ENABLE_SMALL " "cannot be used at the same time with a compiler " "that doesn't support " "__attribute__((__constructor__))") endif() # Check for __attribute__((__ifunc__())) support. option(ALLOW_ATTR_IFUNC "Allow use of __attribute__((__ifunc__())) if \ supported by the system" ON) if(ALLOW_ATTR_IFUNC) cmake_push_check_state() set(CMAKE_REQUIRED_FLAGS "-Werror") check_c_source_compiles(" static void func(void) { return; } static void (*resolve_func(void)) (void) { return func; } void func_ifunc(void) __attribute__((__ifunc__(\"resolve_func\"))); int main(void) { return 0; } /* * 'clang -Wall' incorrectly warns that resolve_func is * unused (-Wunused-function). Correct assembly output is * still produced. This problem exists at least in Clang * versions 4 to 17. The following silences the bogus warning: */ void make_clang_quiet(void); void make_clang_quiet(void) { resolve_func()(); } " HAVE_FUNC_ATTRIBUTE_IFUNC) cmake_pop_check_state() tuklib_add_definition_if(liblzma HAVE_FUNC_ATTRIBUTE_IFUNC) endif() # cpuid.h check_include_file(cpuid.h HAVE_CPUID_H) tuklib_add_definition_if(liblzma HAVE_CPUID_H) # immintrin.h: check_include_file(immintrin.h HAVE_IMMINTRIN_H) if(HAVE_IMMINTRIN_H) target_compile_definitions(liblzma PRIVATE HAVE_IMMINTRIN_H) # SSE2 intrinsics: check_c_source_compiles(" #include 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) # CLMUL intrinsic: check_c_source_compiles(" #include #if defined(__e2k__) && __iset__ < 6 # error #endif #if (defined(__GNUC__) || defined(__clang__)) && !defined(__EDG__) __attribute__((__target__(\"ssse3,sse4.1,pclmul\"))) #endif __m128i my_clmul(__m128i a) { const __m128i b = _mm_set_epi64x(1, 2); return _mm_clmulepi64_si128(a, b, 0); } int main(void) { return 0; } " HAVE_USABLE_CLMUL) tuklib_add_definition_if(liblzma HAVE_USABLE_CLMUL) 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) set_target_properties(liblzma PROPERTIES LINK_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/src/common/common_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(BUILD_SHARED_LIBS AND CMAKE_SYSTEM_NAME STREQUAL "Linux") # GNU/Linux-specific symbol versioning for shared liblzma. # Note that adding link options doesn't affect static builds # but HAVE_SYMBOL_VERSIONS_LINUX must not be used with static builds # because it would put symbol versions into the static library which # can cause problems. It's clearer if all symver related things are # omitted when not building a shared library. # # NOTE: Set it explicitly to 1 to make it clear that versioning is # done unconditionally in the C files. target_compile_definitions(liblzma PRIVATE HAVE_SYMBOL_VERSIONS_LINUX=1) target_link_options(liblzma PRIVATE "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/src/liblzma/liblzma_linux.map" ) set_target_properties(liblzma PROPERTIES LINK_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/src/liblzma/liblzma_linux.map" ) elseif(BUILD_SHARED_LIBS AND CMAKE_SYSTEM_NAME STREQUAL "FreeBSD") # Symbol versioning for shared liblzma for non-GNU/Linux. # FIXME? What about Solaris? target_link_options(liblzma PRIVATE "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/src/liblzma/liblzma_generic.map" ) set_target_properties(liblzma PROPERTIES LINK_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/src/liblzma/liblzma_generic.map" ) 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 liblzma-config-version.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( "${CMAKE_CURRENT_BINARY_DIR}/liblzma-config-version.cmake" VERSION "${liblzma_VERSION}" COMPATIBILITY SameMajorVersion) # Create liblzma-config.cmake. We use this spelling instead of # liblzmaConfig.cmake to make find_package work in case insensitive # manner even with case sensitive file systems. This gives more consistent # behavior between operating systems. This optionally includes a dependency # on a threading library, so the contents are created in two separate parts. # The "second half" is always needed, so create it first. set(LZMA_CONFIG_CONTENTS "include(\"\${CMAKE_CURRENT_LIST_DIR}/liblzma-targets.cmake\") if(NOT TARGET LibLZMA::LibLZMA) # Be compatible with the spelling used by the FindLibLZMA module. This # doesn't use ALIAS because it would make CMake resolve LibLZMA::LibLZMA # to liblzma::liblzma instead of keeping the original spelling. Keeping # the original spelling is important for good FindLibLZMA compatibility. add_library(LibLZMA::LibLZMA INTERFACE IMPORTED) set_target_properties(LibLZMA::LibLZMA PROPERTIES INTERFACE_LINK_LIBRARIES liblzma::liblzma) endif() ") if(ENABLE_THREADS STREQUAL "posix") set(LZMA_CONFIG_CONTENTS "include(CMakeFindDependencyMacro) set(THREADS_PREFER_PTHREAD_FLAG TRUE) find_dependency(Threads) ${LZMA_CONFIG_CONTENTS} ") endif() file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/liblzma-config.cmake" "${LZMA_CONFIG_CONTENTS}") # Set CMAKE_INSTALL_LIBDIR and friends. include(GNUInstallDirs) # Install the library binary. The INCLUDES specifies the include path that # is exported for other projects to use but it doesn't install any files. install(TARGETS liblzma EXPORT liblzmaTargets RUNTIME DESTINATION "${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 "${CMAKE_INSTALL_LIBDIR}/cmake/liblzma" CACHE STRING "Path to liblzma's .cmake files") install(EXPORT liblzmaTargets NAMESPACE liblzma:: FILE liblzma-targets.cmake DESTINATION "${liblzma_INSTALL_CMAKEDIR}" COMPONENT liblzma_Development) install(FILES "${CMAKE_CURRENT_BINARY_DIR}/liblzma-config.cmake" "${CMAKE_CURRENT_BINARY_DIR}/liblzma-config-version.cmake" DESTINATION "${liblzma_INSTALL_CMAKEDIR}" COMPONENT liblzma_Development) ############################################################################# # libgnu (getopt_long) ############################################################################# # This mirrors how the Autotools build system handles the getopt_long # replacement, calling the object library libgnu since the replacement # version comes from Gnulib. add_library(libgnu OBJECT) # CMake requires that even an object library must have at least once source # file. So we give it a header file that results in no output files. target_sources(libgnu PRIVATE lib/getopt.in.h) # The Ninja Generator requires setting the linker language since it cannot # guess the programming language of just a header file. Setting this # property avoids needing an empty .c file or an non-empty unnecessary .c # file. set_target_properties(libgnu PROPERTIES LINKER_LANGUAGE C) # Create /lib directory in the build directory and add it to the include path. file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/lib") target_include_directories(libgnu PUBLIC "${CMAKE_CURRENT_BINARY_DIR}/lib") # Include /lib from the source directory. It does no harm even if none of # the Gnulib replacements are used. target_include_directories(libgnu PUBLIC lib) # The command line tools need getopt_long in order to parse arguments. If # the system does not have a getopt_long implementation we can use the one # from Gnulib instead. check_symbol_exists(getopt_long getopt.h HAVE_GETOPT_LONG) if(NOT HAVE_GETOPT_LONG) # Set the __GETOPT_PREFIX definition to "rpl_" (replacement) to avoid # name conflicts with libc symbols. The same prefix is set if using # the Autotools build (m4/getopt.m4). target_compile_definitions(libgnu PUBLIC "__GETOPT_PREFIX=rpl_") # Create a custom copy command to copy the getopt header to the build # directory and re-copy it if it is updated. (Gnulib does it this way # because it allows choosing which .in.h files to actually use in the # build. We need just getopt.h so this is a bit overcomplicated for # a single header file only.) add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/lib/getopt.h" COMMAND "${CMAKE_COMMAND}" -E copy "${CMAKE_CURRENT_SOURCE_DIR}/lib/getopt.in.h" "${CMAKE_CURRENT_BINARY_DIR}/lib/getopt.h" MAIN_DEPENDENCY "${CMAKE_CURRENT_SOURCE_DIR}/lib/getopt.in.h" VERBATIM) target_sources(libgnu PRIVATE lib/getopt1.c lib/getopt.c lib/getopt_int.h lib/getopt-cdefs.h lib/getopt-core.h lib/getopt-ext.h lib/getopt-pfx-core.h lib/getopt-pfx-ext.h "${CMAKE_CURRENT_BINARY_DIR}/lib/getopt.h" ) endif() ############################################################################# # xzdec ############################################################################# if(HAVE_DECODERS AND (NOT MSVC OR MSVC_VERSION GREATER_EQUAL 1900)) add_executable(xzdec src/common/sysdefs.h src/common/tuklib_common.h src/common/tuklib_config.h src/common/tuklib_exit.c src/common/tuklib_exit.h src/common/tuklib_gettext.h src/common/tuklib_progname.c src/common/tuklib_progname.h src/xzdec/xzdec.c ) target_include_directories(xzdec PRIVATE src/common src/liblzma/api ) target_link_libraries(xzdec PRIVATE liblzma libgnu) if(WIN32) # Add the Windows resource file for xzdec.exe. target_sources(xzdec PRIVATE src/xzdec/xzdec_w32res.rc) set_target_properties(xzdec PROPERTIES LINK_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/src/common/common_w32res.rc" ) endif() 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 OR MSVC_VERSION GREATER_EQUAL 1900) 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/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 ) if(HAVE_DECODERS) target_sources(xz PRIVATE src/xz/list.c src/xz/list.h ) endif() target_link_libraries(xz PRIVATE liblzma libgnu) target_compile_definitions(xz PRIVATE ASSUME_RAM=128) if(WIN32) # Add the Windows resource file for xz.exe. target_sources(xz PRIVATE src/xz/xz_w32res.rc) set_target_properties(xz PROPERTIES LINK_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/src/common/common_w32res.rc" ) endif() tuklib_progname(xz) tuklib_mbstr(xz) check_symbol_exists(optreset getopt.h HAVE_OPTRESET) tuklib_add_definition_if(xz HAVE_OPTRESET) check_symbol_exists(posix_fadvise fcntl.h HAVE_POSIX_FADVISE) tuklib_add_definition_if(xz HAVE_POSIX_FADVISE) # How to get file time: check_struct_has_member("struct stat" st_atim.tv_nsec "sys/types.h;sys/stat.h" HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC) if(HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC) tuklib_add_definitions(xz HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC) else() check_struct_has_member("struct stat" st_atimespec.tv_nsec "sys/types.h;sys/stat.h" HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC) if(HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC) tuklib_add_definitions(xz HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC) else() check_struct_has_member("struct stat" st_atimensec "sys/types.h;sys/stat.h" HAVE_STRUCT_STAT_ST_ATIMENSEC) tuklib_add_definition_if(xz HAVE_STRUCT_STAT_ST_ATIMENSEC) endif() endif() # How to set file time: check_symbol_exists(futimens "sys/types.h;sys/stat.h" HAVE_FUTIMENS) if(HAVE_FUTIMENS) tuklib_add_definitions(xz HAVE_FUTIMENS) else() check_symbol_exists(futimes "sys/time.h" HAVE_FUTIMES) if(HAVE_FUTIMES) tuklib_add_definitions(xz HAVE_FUTIMES) else() check_symbol_exists(futimesat "sys/time.h" HAVE_FUTIMESAT) if(HAVE_FUTIMESAT) tuklib_add_definitions(xz HAVE_FUTIMESAT) else() check_symbol_exists(utimes "sys/time.h" HAVE_UTIMES) if(HAVE_UTIMES) tuklib_add_definitions(xz HAVE_UTIMES) else() check_symbol_exists(_futime "sys/utime.h" HAVE__FUTIME) if(HAVE__FUTIME) tuklib_add_definitions(xz HAVE__FUTIME) else() check_symbol_exists(utime "utime.h" HAVE_UTIME) tuklib_add_definition_if(xz HAVE_UTIME) endif() endif() endif() endif() endif() install(TARGETS xz RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}" COMPONENT xz) if(UNIX) install(FILES src/xz/xz.1 DESTINATION "${CMAKE_INSTALL_MANDIR}/man1" COMPONENT xz) option(CREATE_XZ_SYMLINKS "Create unxz and xzcat symlinks" ON) option(CREATE_LZMA_SYMLINKS "Create lzma, unlzma, and lzcat symlinks" ON) set(XZ_LINKS) if(CREATE_XZ_SYMLINKS) list(APPEND XZ_LINKS "unxz" "xzcat") endif() if(CREATE_LZMA_SYMLINKS) list(APPEND XZ_LINKS "lzma" "unlzma" "lzcat") endif() # With Windows Cygwin and MSYS2 the symlinking is complicated. Both # of these environments set the UNIX variable so they will try to # make the symlinks. The ability for Cygwin and MSYS2 to make # broken symlinks is determined by the CYGWIN and MSYS2 environment # variables, respectively. Broken symlinks are needed for the man # page symlinks and for determining if the xz and lzma symlinks need # to depend on the xz target or not. If broken symlinks cannot be # made then the xz binary must be created before the symlinks. set(ALLOW_BROKEN_SYMLINKS ON) if(CMAKE_SYSTEM_NAME STREQUAL "CYGWIN") # The Cygwin env variable can be set to four possible values: # # 1. "lnk". Create symlinks as Windows shortcuts. # # 2. "native". Create symlinks as native Windows symlinks # if supported by the system. Fallback to "lnk" if native # symlinks are not supported. # # 3. "nativestrict". Create symlinks as native Windows symlinks # if supported by the system. If the target of the symlink # does not exist or the creation of the symlink fails for any # reason, do not create the symlink. # # 4. "sys". Create symlinks as plain files with a special # system attribute containing the path to the symlink target. # # So, the only case we care about for broken symlinks is # "nativestrict" since all other values mean that broken # symlinks are allowed. If the env variable is not set the # default is "native". If the env variable is set but not # assigned one of the four values, then the default is the same # as option 1 "lnk". string(FIND "$ENV{CYGWIN}" "winsymlinks:nativestrict" SYMLINK_POS) if(SYMLINK_POS GREATER -1) set(ALLOW_BROKEN_SYMLINKS OFF) endif() elseif(CMAKE_SYSTEM_NAME STREQUAL "MSYS") # The MSYS env variable behaves similar to the CYGWIN but has a # different default behavior. If winsymlinks is set but not # assigned one of the four supported values, the default is to # *copy* the target to the symlink destination. This will fail # if the target does not exist so broken symlinks cannot be # allowed. string(FIND "$ENV{MSYS}" "winsymlinks" SYMLINK_POS) if(SYMLINK_POS GREATER -1) string(FIND "$ENV{MSYS}" "winsymlinks:nativestrict" SYMLINK_POS) if(SYMLINK_POS GREATER -1) set(ALLOW_BROKEN_SYMLINKS OFF) endif() else() set(ALLOW_BROKEN_SYMLINKS OFF) endif() endif() # Create symlinks in the build directory and then install them. # # The symlinks do not likely need any special extension since # even on Windows the symlink can still be executed without # the .exe extension. foreach(LINK IN LISTS XZ_LINKS) add_custom_target("${LINK}" ALL "${CMAKE_COMMAND}" -E create_symlink "$" "${LINK}" BYPRODUCTS "${LINK}" VERBATIM) install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${LINK}" DESTINATION "${CMAKE_INSTALL_BINDIR}" COMPONENT xz) # Only create the man page symlinks if the symlinks can be # created broken. The symlinks will not be valid until install # so they cannot be created on these system environments. if(ALLOW_BROKEN_SYMLINKS) add_custom_target("${LINK}.1" ALL "${CMAKE_COMMAND}" -E create_symlink "xz.1" "${LINK}.1" BYPRODUCTS "${LINK}.1" VERBATIM) install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${LINK}.1" DESTINATION "${CMAKE_INSTALL_MANDIR}/man1" COMPONENT xz) else() # Add the xz target as dependency when broken symlinks # cannot be made. This ensures parallel builds do not fail # since it will enforce the order of creating xz first, then # the symlinks. add_dependencies("${LINK}" xz) endif() endforeach() endif() endif() ############################################################################# # Tests ############################################################################# include(CTest) if(BUILD_TESTING) set(LIBLZMA_TESTS test_bcj_exact_size test_block_header test_check test_filter_flags test_filter_str test_hardware test_index test_index_hash test_lzip_decoder test_memlimit test_stream_flags test_vli ) foreach(TEST IN LISTS LIBLZMA_TESTS) add_executable("${TEST}" "tests/${TEST}.c") target_include_directories("${TEST}" PRIVATE src/common src/liblzma/api src/liblzma ) target_link_libraries("${TEST}" PRIVATE liblzma) # Put the test programs into their own subdirectory so they don't # pollute the top-level dir which might contain xz and xzdec. set_target_properties("${TEST}" PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/tests_bin" ) add_test(NAME "${TEST}" COMMAND "${CMAKE_CURRENT_BINARY_DIR}/tests_bin/${TEST}" ) # Set srcdir environment variable so that the tests find their # input files from the source tree. # # Set the return code for skipped tests to match Automake convention. set_tests_properties("${TEST}" PROPERTIES ENVIRONMENT "srcdir=${CMAKE_CURRENT_LIST_DIR}/tests" SKIP_RETURN_CODE 77 ) endforeach() endif()