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xz/CMakeLists.txt

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CMake
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#############################################################################
#
# 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 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_large_file_support.cmake)
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)
set(PACKAGE_NAME "XZ Utils")
set(PACKAGE_BUGREPORT "xz@tukaani.org")
set(PACKAGE_URL "https://tukaani.org/xz/")
# Get the package version from version.h into PACKAGE_VERSION variable.
file(READ src/liblzma/api/lzma/version.h PACKAGE_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\
.*$"
"\\1.\\2.\\3" PACKAGE_VERSION "${PACKAGE_VERSION}")
# Among other things, this gives us variables xz_VERSION and xz_VERSION_MAJOR.
project(xz VERSION "${PACKAGE_VERSION}" LANGUAGES C)
# We need a compiler that supports enough C99 or newer (variable-length arrays
# aren't needed, those are optional in C17). Setting CMAKE_C_STANDARD here
# makes it the default for all targets. It doesn't affect the INTERFACE so
# liblzma::liblzma won't end up with INTERFACE_COMPILE_FEATURES "c_std_99"
# (the API headers are C89 and C++ compatible).
set(CMAKE_C_STANDARD 99)
set(CMAKE_C_STANDARD_REQUIRED ON)
# On Apple OSes, don't build executables as bundles:
set(CMAKE_MACOSX_BUNDLE OFF)
# windres from GNU binutils can be tricky with command line arguments
# that contain spaces or other funny characters. Unfortunately we need
# a space in PACKAGE_NAME. Using \x20 to encode the US-ASCII space seems
# to work in both cmd.exe and /bin/sh.
#
# However, even \x20 isn't enough in all situations, resulting in
# "syntax error" from windres. Using --use-temp-file prevents windres
# from using popen() and this seems to fix the problem.
#
# llvm-windres from Clang/LLVM 16.0.6 and older: The \x20 results
# in "XZx20Utils" in the compiled binary. The option --use-temp-file
# makes no difference.
#
# llvm-windres 17.0.0 and later: It emulates GNU windres more accurately, so
# the workarounds used with GNU windres must be used with llvm-windres too.
#
# CMake 3.27 doesn't have CMAKE_RC_COMPILER_ID so we rely on
# CMAKE_C_COMPILER_ID.
if((MINGW OR CYGWIN OR MSYS) AND (
NOT CMAKE_C_COMPILER_ID STREQUAL "Clang" OR
CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL "17"))
# Use workarounds with GNU windres and llvm-windres >= 17.0.0. The \x20
# in PACKAGE_NAME_DEFINITION works with gcc and clang too so we don't need
# to worry how to pass different flags to windres and the C compiler.
# Keep the original PACKAGE_NAME intact for generation of liblzma.pc.
string(APPEND CMAKE_RC_FLAGS " --use-temp-file")
string(REPLACE " " "\\x20" PACKAGE_NAME_DEFINITION "${PACKAGE_NAME}")
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_DEFINITION "${PACKAGE_NAME}")
endif()
# Definitions common to all targets:
add_compile_definitions(
# Package info:
PACKAGE_NAME="${PACKAGE_NAME_DEFINITION}"
PACKAGE_BUGREPORT="${PACKAGE_BUGREPORT}"
PACKAGE_URL="${PACKAGE_URL}"
# 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.
$<$<CONFIG:>: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)
# Check for large file support. It's required on some 32-bit platforms and
# even on 64-bit MinGW-w64 to get 64-bit off_t. This can be forced off on
# the CMake command line if needed: -DLARGE_FILE_SUPPORT=OFF
tuklib_large_file_support(ALL)
# This is needed by liblzma and xz.
tuklib_integer(ALL)
# This is used for liblzma.pc generation to add -lrt if needed.
set(LIBS)
# Check for clock_gettime(). Do this before checking for threading so
# that we know there if CLOCK_MONOTONIC is available.
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)
set(LIBS "-lrt") # For liblzma.pc
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()
# 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_common.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 "${ADDITIONAL_SUPPORTED_CHECKS}" CACHE STRING
"Additional check types to support (crc32 is always built)")
foreach(CHECK IN LISTS ADDITIONAL_CHECK_TYPES)
if(NOT CHECK IN_LIST ADDITIONAL_SUPPORTED_CHECKS)
message(FATAL_ERROR "'${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_${MF_UPPER}")
else()
message(FATAL_ERROR "'${MF}' is not a supported match finder")
endif()
endforeach()
#############
# Threading #
#############
# Supported threading 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 (pthreads), 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_THREADING_METHODS ON OFF posix win95 vista)
set(ENABLE_THREADS ON CACHE STRING
"Threading method: Set to 'ON' to autodetect, '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 "${SUPPORTED_THREADING_METHODS}")
# This is a flag variable set when win95 threads are used. We must ensure
# the combination of enable_small and win95 threads is not used without a
# compiler supporting attribute __constructor__.
set(USE_WIN95_THREADS OFF)
# This is a flag variable set when posix threads (pthreads) are used.
# It's needed when creating liblzma-config.cmake where dependency on
# Threads::Threads is only needed with pthreads.
set(USE_POSIX_THREADS OFF)
if(NOT ENABLE_THREADS IN_LIST SUPPORTED_THREADING_METHODS)
message(FATAL_ERROR "'${ENABLE_THREADS}' is not a supported "
"threading method")
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")
# The threading library only needs to be explicitly linked
# for posix threads, so this is needed for creating
# liblzma-config.cmake later.
set(USE_POSIX_THREADS ON)
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
"${CMAKE_THREAD_LIBS_INIT}")
check_symbol_exists(pthread_condattr_setclock pthread.h
HAVE_PTHREAD_CONDATTR_SETCLOCK)
tuklib_add_definition_if(ALL HAVE_PTHREAD_CONDATTR_SETCLOCK)
endif()
else()
message(SEND_ERROR
"Windows threading method was requested but a compatible "
"library could not be found")
endif()
else()
message(SEND_ERROR "No supported threading library found")
endif()
target_sources(liblzma PRIVATE
src/common/tuklib_cpucores.c
src/common/tuklib_cpucores.h
src/liblzma/common/hardware_cputhreads.c
src/liblzma/common/outqueue.c
src/liblzma/common/outqueue.h
)
endif()
############
# Encoders #
############
set(SIMPLE_FILTERS
x86
arm
armthumb
arm64
powerpc
ia64
sparc
)
# The SUPPORTED_FILTERS are shared between Encoders and Decoders
# since only lzip does not appear in both lists. lzip is a special
# case anyway, so it is handled separately in the Decoders section.
set(SUPPORTED_FILTERS
lzma1
lzma2
delta
"${SIMPLE_FILTERS}"
)
set(ENCODERS "${SUPPORTED_FILTERS}" CACHE STRING "Encoders to support")
# If LZMA2 is enabled, then LZMA1 must also be enabled.
if(NOT "lzma1" IN_LIST ENCODERS AND "lzma2" IN_LIST ENCODERS)
message(FATAL_ERROR "LZMA2 encoder requires that LZMA1 is also enabled")
endif()
# If LZMA1 is enabled, then at least one match finder must be enabled.
if(MATCH_FINDERS STREQUAL "" AND "lzma1" IN_LIST ENCODERS)
message(FATAL_ERROR "At least 1 match finder is required for an "
"LZ-based encoder")
endif()
set(HAVE_DELTA_CODER OFF)
set(SIMPLE_ENCODERS OFF)
set(HAVE_ENCODERS OFF)
foreach(ENCODER IN LISTS ENCODERS)
if(ENCODER IN_LIST SUPPORTED_FILTERS)
set(HAVE_ENCODERS ON)
if(NOT SIMPLE_ENCODERS AND ENCODER IN_LIST SIMPLE_FILTERS)
set(SIMPLE_ENCODERS ON)
endif()
string(TOUPPER "${ENCODER}" ENCODER_UPPER)
add_compile_definitions("HAVE_ENCODER_${ENCODER_UPPER}")
else()
message(FATAL_ERROR "'${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_${DECODER_UPPER}")
else()
message(FATAL_ERROR "'${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(FATAL_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(FATAL_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(FATAL_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)
if(HAVE_FUNC_ATTRIBUTE_IFUNC AND CMAKE_C_FLAGS MATCHES "-fsanitize=")
message(SEND_ERROR
"CMAKE_C_FLAGS or the environment variable CFLAGS "
"contains '-fsanitize=' which is incompatible "
"with ifunc. Use -DALLOW_ATTR_IFUNC=OFF "
"as an argument to 'cmake' when using '-fsanitize'.")
endif()
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 <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)
# CLMUL intrinsic:
option(ALLOW_CLMUL_CRC "Allow carryless multiplication for CRC \
calculation if supported by the system" ON)
if(ALLOW_CLMUL_CRC)
check_c_source_compiles("
#include <immintrin.h>
#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)
if(HAVE_USABLE_CLMUL)
target_sources(liblzma PRIVATE src/liblzma/check/crc_clmul.c)
target_compile_definitions(liblzma PRIVATE HAVE_USABLE_CLMUL)
endif()
endif()
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)
if(NOT MSVC)
# Create a DEF file. The linker puts the ordinal numbers there
# too so the output from the linker isn't our final file.
target_link_options(liblzma PRIVATE
"-Wl,--output-def,liblzma.def.in")
# Remove the ordinal numbers from the DEF file so that
# no one will create an import library that links by ordinal
# instead of by name. We don't maintain a DEF file so the
# ordinal numbers aren't stable.
add_custom_command(TARGET liblzma POST_BUILD
COMMAND "${CMAKE_COMMAND}"
-DINPUT_FILE=liblzma.def.in
-DOUTPUT_FILE=liblzma.def
-P
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/remove-ordinals.cmake"
BYPRODUCTS "liblzma.def"
VERBATIM)
endif()
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 ""
IMPORT_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(USE_POSIX_THREADS)
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"
"${LZMA_CONFIG_CONTENTS}")
# Set CMAKE_INSTALL_LIBDIR and friends.
include(GNUInstallDirs)
# Create liblzma.pc.
set(prefix "${CMAKE_INSTALL_PREFIX}")
set(exec_prefix "${CMAKE_INSTALL_PREFIX}")
set(libdir "${CMAKE_INSTALL_FULL_LIBDIR}")
set(includedir "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
set(PTHREAD_CFLAGS "${CMAKE_THREAD_LIBS_INIT}")
configure_file(src/liblzma/liblzma.pc.in liblzma.pc
@ONLY
NEWLINE_STYLE LF)
# 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)
if(NOT MSVC)
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/liblzma.pc"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig"
COMPONENT liblzma_Development)
endif()
#############################################################################
# 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()
# Sandboxing:
# ON Use sandboxing if a supported method is available in the OS.
# OFF Disable sandboxing.
# capsicum Require Capsicum (FreeBSD >= 10.2) and fail if not found.
# pledge Require pledge(2) (OpenBSD >= 5.9) and fail if not found.
# landlock Require Landlock (Linux >= 5.13) and fail if not found.
set(SUPPORTED_SANDBOX_METHODS ON OFF capsicum pledge landlock)
set(ENABLE_SANDBOX ON CACHE STRING "Sandboxing method to use in 'xz'")
set_property(CACHE ENABLE_SANDBOX
PROPERTY STRINGS "${SUPPORTED_SANDBOX_METHODS}")
if(NOT ENABLE_SANDBOX IN_LIST SUPPORTED_SANDBOX_METHODS)
message(FATAL_ERROR "'${ENABLE_SANDBOX}' is not a supported "
"sandboxing method")
endif()
# When autodetecting, the search order is fixed and we must not find
# more than one method.
if(ENABLE_SANDBOX STREQUAL "OFF")
set(SANDBOX_FOUND ON)
else()
set(SANDBOX_FOUND OFF)
endif()
# Sandboxing: Capsicum
if(NOT SANDBOX_FOUND AND ENABLE_SANDBOX MATCHES "^ON$|^capsicum$")
check_symbol_exists(cap_rights_limit sys/capsicum.h
HAVE_CAP_RIGHTS_LIMIT)
if(HAVE_CAP_RIGHTS_LIMIT)
target_compile_definitions(xz PRIVATE HAVE_CAP_RIGHTS_LIMIT)
set(SANDBOX_FOUND ON)
endif()
endif()
# Sandboxing: pledge(2)
if(NOT SANDBOX_FOUND AND ENABLE_SANDBOX MATCHES "^ON$|^pledge$")
check_symbol_exists(pledge unistd.h HAVE_PLEDGE)
if(HAVE_PLEDGE)
target_compile_definitions(xz PRIVATE HAVE_PLEDGE)
set(SANDBOX_FOUND ON)
endif()
endif()
# Sandboxing: Landlock
if(NOT SANDBOX_FOUND AND ENABLE_SANDBOX MATCHES "^ON$|^landlock$")
check_include_file(linux/landlock.h HAVE_LINUX_LANDLOCK_H)
if(HAVE_LINUX_LANDLOCK_H)
target_compile_definitions(xz PRIVATE HAVE_LINUX_LANDLOCK_H)
set(SANDBOX_FOUND ON)
# Of our three sandbox methods, only Landlock is incompatible
# with -fsanitize. FreeBSD 13.2 with Capsicum was tested with
# -fsanitize=address,undefined and had no issues. OpenBSD (as
# of version 7.4) has minimal support for process instrumentation.
# OpenBSD does not distribute the additional libraries needed
# (libasan, libubsan, etc.) with GCC or Clang needed for runtime
# sanitization support and instead only support
# -fsanitize-minimal-runtime for minimal undefined behavior
# sanitization. This minimal support is compatible with our use
# of the Pledge sandbox. So only Landlock will result in a
# build that cannot compress or decompress a single file to
# standard out.
if(CMAKE_C_FLAGS MATCHES "-fsanitize=")
message(SEND_ERROR
"CMAKE_C_FLAGS or the environment variable CFLAGS "
"contains '-fsanitize=' which is incompatible "
"with Landlock sandboxing. Use -DENABLE_SANDBOX=OFF "
"as an argument to 'cmake' when using '-fsanitize'.")
endif()
endif()
endif()
if(NOT SANDBOX_FOUND AND NOT ENABLE_SANDBOX MATCHES "^ON$|^OFF$")
message(SEND_ERROR "ENABLE_SANDBOX=${ENABLE_SANDBOX} was used but "
"support for the sandboxing method wasn't found.")
endif()
install(TARGETS xz
RUNTIME DESTINATION "${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("create_${LINK}" ALL
"${CMAKE_COMMAND}" -E create_symlink
"$<TARGET_FILE_NAME:xz>" "${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("create_${LINK}.1" ALL
"${CMAKE_COMMAND}" -E create_symlink "xz.1" "${LINK}.1"
BYPRODUCTS "${LINK}.1"
VERBATIM)
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${LINK}.1"
DESTINATION "${CMAKE_INSTALL_MANDIR}/man1"
COMPONENT xz)
else()
# Add the xz target as dependency when broken symlinks
# cannot be made. This ensures parallel builds do not fail
# since it will enforce the order of creating xz first, then
# the symlinks.
add_dependencies("create_${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_SOURCE_DIR}/tests"
SKIP_RETURN_CODE 77
)
endforeach()
endif()
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