CMakeLists.txt - platform/external/brotli - Gitiles

 # Ubuntu 12.04 LTS has CMake 2.8.7, and is an important target since
 # several CI services, such as Travis and Drone, use it.  Solaris 11
 # has 2.8.6, and it's not difficult to support if you already have to
 # support 2.8.7.
 cmake_minimum_required(VERSION 2.8.6)

 project(brotli C)

 # If Brotli is being bundled in another project, we don't want to
 # install anything.  However, we want to let people override this, so
 # we'll use the BROTLI_BUNDLED_MODE variable to let them do that; just
 # set it to OFF in your project before you add_subdirectory(brotli).
 get_directory_property(BROTLI_PARENT_DIRECTORY PARENT_DIRECTORY)
 if(NOT DEFINED BROTLI_BUNDLED_MODE)
   # Bundled mode hasn't been set one way or the other, set the default
   # depending on whether or not we are the top-level project.
   if(BROTLI_PARENT_DIRECTORY)
     set(BROTLI_BUNDLED_MODE ON)
   else()
     set(BROTLI_BUNDLED_MODE OFF)
   endif()
 endif()
 mark_as_advanced(BROTLI_BUNDLED_MODE)

 include(GNUInstallDirs)

 # Parse version information from common/version.h. Normally we would
 # define these values here and write them out to configuration file(s)
 # (i.e., config.h), but in this case we parse them from
 # common/version.h to be less intrusive.
 function(hex_to_dec HEXADECIMAL DECIMAL)
   string(TOUPPER "${HEXADECIMAL}" _tail)
   set(_decimal 0)
   string(LENGTH "${_tail}" _tail_length)
   while (_tail_length GREATER 0)
     math(EXPR _decimal "${_decimal} * 16")
     string(SUBSTRING "${_tail}" 0 1 _digit)
     string(SUBSTRING "${_tail}" 1 -1 _tail)
     if (_digit STREQUAL "A")
       math(EXPR _decimal "${_decimal} + 10")
     elseif (_digit STREQUAL "B")
       math(EXPR _decimal "${_decimal} + 11")
     elseif (_digit STREQUAL "C")
       math(EXPR _decimal "${_decimal} + 12")
     elseif (_digit STREQUAL "D")
       math(EXPR _decimal "${_decimal} + 13")
     elseif (_digit STREQUAL "E")
       math(EXPR _decimal "${_decimal} + 14")
     elseif (_digit STREQUAL "F")
       math(EXPR _decimal "${_decimal} + 15")
     else()
       math(EXPR _decimal "${_decimal} + ${_digit}")
     endif()
     string(LENGTH "${_tail}" _tail_length)
   endwhile()
   set(${DECIMAL} ${_decimal} PARENT_SCOPE)
 endfunction(hex_to_dec)

 # Version information
 file(STRINGS "c/common/version.h" _brotli_version_line REGEX "^#define BROTLI_VERSION (0x[0-9a-fA-F]+)$")
 string(REGEX REPLACE "^#define BROTLI_VERSION 0x([0-9a-fA-F]+)$" "\\1" _brotli_version_hex "${_brotli_version_line}")
 hex_to_dec("${_brotli_version_hex}" _brotli_version)
 math(EXPR BROTLI_VERSION_MAJOR "${_brotli_version} >> 24")
 math(EXPR BROTLI_VERSION_MINOR "(${_brotli_version} >> 12) & 4095")
 math(EXPR BROTLI_VERSION_PATCH "${_brotli_version} & 4095")
 set(BROTLI_VERSION "${BROTLI_VERSION_MAJOR}.${BROTLI_VERSION_MINOR}.${BROTLI_VERSION_PATCH}")
 mark_as_advanced(BROTLI_VERSION BROTLI_VERSION_MAJOR BROTLI_VERSION_MINOR BROTLI_VERSION_PATCH)

 # ABI Version information
 file(STRINGS "c/common/version.h" _brotli_abi_info_line REGEX "^#define BROTLI_ABI_VERSION (0x[0-9a-fA-F]+)$")
 string(REGEX REPLACE "^#define BROTLI_ABI_VERSION 0x([0-9a-fA-F]+)$" "\\1" _brotli_abi_info_hex "${_brotli_abi_info_line}")
 hex_to_dec("${_brotli_abi_info_hex}" _brotli_abi_info)
 math(EXPR BROTLI_ABI_CURRENT "${_brotli_abi_info} >> 24")
 math(EXPR BROTLI_ABI_REVISION "(${_brotli_abi_info} >> 12) & 4095")
 math(EXPR BROTLI_ABI_AGE "${_brotli_abi_info} & 4095")
 math(EXPR BROTLI_ABI_COMPATIBILITY "${BROTLI_ABI_CURRENT} - ${BROTLI_ABI_AGE}")
 mark_as_advanced(BROTLI_ABI_CURRENT BROTLI_ABI_REVISION BROTLI_ABI_AGE BROTLI_ABI_COMPATIBILITY)

 if (ENABLE_SANITIZER)
   set(CMAKE_C_FLAGS " ${CMAKE_C_FLAGS} -fsanitize=${ENABLE_SANITIZER}")
   set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -fsanitize=${ENABLE_SANITIZER}")
   set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=${ENABLE_SANITIZER}")

   # By default, brotli depends on undefined behavior, but setting
   # BROTLI_BUILD_PORTABLE should result in a build which does not.
   if(ENABLE_SANITIZER STREQUAL "undefined")
     add_definitions(-DBROTLI_BUILD_PORTABLE)
   endif()
 endif ()

 include(CheckFunctionExists)
 set(LIBM_LIBRARY)
 CHECK_FUNCTION_EXISTS(log2 LOG2_RES)
 if(NOT LOG2_RES)
   set(orig_req_libs "${CMAKE_REQUIRED_LIBRARIES}")
   set(CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES};m")
   CHECK_FUNCTION_EXISTS(log2 LOG2_LIBM_RES)
   if(LOG2_LIBM_RES)
     set(LIBM_LIBRARY "m")
   else()
     message(FATAL_ERROR "log2() not found")
   endif()

   set(CMAKE_REQUIRED_LIBRARIES "${orig_req_libs}")
   unset(LOG2_LIBM_RES)
   unset(orig_req_libs)
 endif()
 unset(LOG2_RES)

 set(BROTLI_INCLUDE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/c/include")
 mark_as_advanced(BROTLI_INCLUDE_DIRS)

 set(BROTLI_LIBRARIES_CORE brotlienc brotlidec brotlicommon)
 set(BROTLI_LIBRARIES ${BROTLI_LIBRARIES_CORE} ${LIBM_LIBRARY})
 mark_as_advanced(BROTLI_LIBRARIES)

 set(BROTLI_LIBRARIES_CORE_STATIC brotlienc-static brotlidec-static brotlicommon-static)
 set(BROTLI_LIBRARIES_STATIC ${BROTLI_LIBRARIES_CORE_STATIC} ${LIBM_LIBRARY})
 mark_as_advanced(BROTLI_LIBRARIES_STATIC)

 if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
   add_definitions(-DOS_LINUX)
 elseif(${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
   add_definitions(-DOS_FREEBSD)
 elseif(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
   add_definitions(-DOS_MACOSX)
 endif()

 function(transform_sources_list INPUT_FILE OUTPUT_FILE)
   file(READ ${INPUT_FILE} TEXT)
   string(REGEX REPLACE "\\\\\n" "~continuation~" TEXT ${TEXT})
   string(REGEX REPLACE "([a-zA-Z_][a-zA-Z0-9_]*)[\t ]*=[\t ]*([^\n]*)" "SET(\\1 \\2)" TEXT ${TEXT})
   string(REPLACE "~continuation~" "\n" TEXT ${TEXT})
   file(WRITE ${OUTPUT_FILE} ${TEXT})
 endfunction()

 transform_sources_list("scripts/sources.lst" "${CMAKE_CURRENT_BINARY_DIR}/sources.lst.cmake")
 include("${CMAKE_CURRENT_BINARY_DIR}/sources.lst.cmake")

 add_library(brotlicommon SHARED ${BROTLI_COMMON_C})
 add_library(brotlidec SHARED ${BROTLI_DEC_C})
 add_library(brotlienc SHARED ${BROTLI_ENC_C})

 add_library(brotlicommon-static STATIC ${BROTLI_COMMON_C})
 add_library(brotlidec-static STATIC ${BROTLI_DEC_C})
 add_library(brotlienc-static STATIC ${BROTLI_ENC_C})

 # Older CMake versions does not understand INCLUDE_DIRECTORIES property.
 include_directories(${BROTLI_INCLUDE_DIRS})

 foreach(lib brotlicommon brotlidec brotlienc)
   target_compile_definitions(${lib} PUBLIC "BROTLI_SHARED_COMPILATION" )
   string(TOUPPER "${lib}" LIB)
   set_target_properties (${lib} PROPERTIES DEFINE_SYMBOL "${LIB}_SHARED_COMPILATION" )
 endforeach()

 foreach(lib brotlicommon brotlidec brotlienc brotlicommon-static brotlidec-static brotlienc-static)
   target_link_libraries(${lib} ${LIBM_LIBRARY})
   set_property(TARGET ${lib} APPEND PROPERTY INCLUDE_DIRECTORIES ${BROTLI_INCLUDE_DIRS})
   set_target_properties(${lib} PROPERTIES
     VERSION "${BROTLI_ABI_COMPATIBILITY}.${BROTLI_ABI_AGE}.${BROTLI_ABI_REVISION}"
     SOVERSION "${BROTLI_ABI_COMPATIBILITY}"
     POSITION_INDEPENDENT_CODE TRUE)
   set_property(TARGET ${lib} APPEND PROPERTY INTERFACE_INCLUDE_DIRECTORIES "${BROTLI_INCLUDE_DIRS}")
 endforeach()

 target_link_libraries(brotlidec brotlicommon)
 target_link_libraries(brotlienc brotlicommon)

 target_link_libraries(brotlidec-static brotlicommon-static)
 target_link_libraries(brotlienc-static brotlicommon-static)

 # For projects stuck on older versions of CMake, this will set the
 # BROTLI_INCLUDE_DIRS and BROTLI_LIBRARIES variables so they still
 # have a relatively easy way to use Brotli:
 #
 #   include_directories(${BROTLI_INCLUDE_DIRS})
 #   target_link_libraries(foo ${BROTLI_LIBRARIES})
 if(BROTLI_PARENT_DIRECTORY)
   set(BROTLI_INCLUDE_DIRS "${BROTLI_INCLUDE_DIRS}" PARENT_SCOPE)
   set(BROTLI_LIBRARIES "${BROTLI_LIBRARIES}" PARENT_SCOPE)
 endif()

 # Build the brotli executable
 add_executable(brotli ${BROTLI_CLI_C})
 target_link_libraries(brotli ${BROTLI_LIBRARIES_STATIC})

 # Installation
 if(NOT BROTLI_BUNDLED_MODE)
   install(
     TARGETS brotli
     RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
   )

   install(
     TARGETS ${BROTLI_LIBRARIES_CORE}
     ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
     LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
     RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
   )

   install(
     TARGETS ${BROTLI_LIBRARIES_CORE_STATIC}
     ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
     LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
     RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
   )

   install(
     DIRECTORY ${BROTLI_INCLUDE_DIRS}/brotli
     DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
   )
 endif()

 # Tests

 # If we're targeting Windows but not running on Windows, we need Wine
 # to run the tests...
 if(NOT BROTLI_DISABLE_TESTS)
   if(WIN32 AND NOT CMAKE_HOST_WIN32)
     find_program(BROTLI_WRAPPER NAMES wine)

     if(NOT BROTLI_WRAPPER)
       message(STATUS "wine not found, disabling tests")
       set(BROTLI_DISABLE_TESTS TRUE)
     endif()
   endif()
 endif()

 # If our compiler is a cross-compiler that we know about (arm/aarch64),
 # then we need to use qemu to execute the tests.
 if(NOT BROTLI_DISABLE_TESTS)
   if ("${CMAKE_C_COMPILER}" MATCHES "^.*/arm-linux-gnueabihf-.*$")
     message(STATUS "Detected arm-linux-gnueabihf cross-compilation")
     set(BROTLI_WRAPPER "qemu-arm")
     set(BROTLI_WRAPPER_LD_PREFIX "/usr/arm-linux-gnueabihf")
   endif()

   if ("${CMAKE_C_COMPILER}" MATCHES "^.*/arm-linux-gnueabi-.*$")
     message(STATUS "Detected arm-linux-gnueabi cross-compilation")
     set(BROTLI_WRAPPER "qemu-arm")
     set(BROTLI_WRAPPER_LD_PREFIX "/usr/arm-linux-gnueabi")
   endif()

   if ("${CMAKE_C_COMPILER}" MATCHES "^.*/aarch64-linux-gnu-.*$")
     message(STATUS "Detected aarch64-linux-gnu cross-compilation")
     set(BROTLI_WRAPPER "qemu-aarch64")
     set(BROTLI_WRAPPER_LD_PREFIX "/usr/aarch64-linux-gnu")
   endif()
 endif()

 if(NOT BROTLI_DISABLE_TESTS)
   include(CTest)
   enable_testing()

   set(ROUNDTRIP_INPUTS
     tests/testdata/alice29.txt
     tests/testdata/asyoulik.txt
     tests/testdata/lcet10.txt
     tests/testdata/plrabn12.txt
     c/enc/encode.c
     c/common/dictionary.h
     c/dec/decode.c)

   foreach(INPUT ${ROUNDTRIP_INPUTS})
     get_filename_component(OUTPUT_NAME "${INPUT}" NAME)

     set(OUTPUT_FILE "${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_NAME}")
     set(INPUT_FILE "${CMAKE_CURRENT_SOURCE_DIR}/${INPUT}")

     foreach(quality 1 6 9 11)
       add_test(NAME "${BROTLI_TEST_PREFIX}roundtrip/${INPUT}/${quality}"
         COMMAND "${CMAKE_COMMAND}"
           -DBROTLI_WRAPPER=${BROTLI_WRAPPER}
           -DBROTLI_WRAPPER_LD_PREFIX=${BROTLI_WRAPPER_LD_PREFIX}
           -DBROTLI_CLI=$<TARGET_FILE:brotli>
           -DQUALITY=${quality}
           -DINPUT=${INPUT_FILE}
           -DOUTPUT=${OUTPUT_FILE}.${quality}
           -P ${CMAKE_CURRENT_SOURCE_DIR}/tests/run-roundtrip-test.cmake)
     endforeach()
   endforeach()

   file(GLOB_RECURSE
     COMPATIBILITY_INPUTS
     RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}
     tests/testdata/*.compressed*)

   foreach(INPUT ${COMPATIBILITY_INPUTS})
     add_test(NAME "${BROTLI_TEST_PREFIX}compatibility/${INPUT}"
       COMMAND "${CMAKE_COMMAND}"
         -DBROTLI_WRAPPER=${BROTLI_WRAPPER}
         -DBROTLI_WRAPPER_LD_PREFIX=${BROTLI_WRAPPER_LD_PREFIX}
         -DBROTLI_CLI=$<TARGET_FILE:brotli>
         -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/${INPUT}
         -P ${CMAKE_CURRENT_SOURCE_DIR}/tests/run-compatibility-test.cmake)
   endforeach()
 endif()

 # Generate a pkg-config files

 function(generate_pkg_config_path outvar path)
   string(LENGTH "${path}" path_length)

   set(path_args ${ARGV})
   list(REMOVE_AT path_args 0 1)
   list(LENGTH path_args path_args_remaining)

   set("${outvar}" "${path}")

   while(path_args_remaining GREATER 1)
     list(GET path_args 0 name)
     list(GET path_args 1 value)

     get_filename_component(value_full "${value}" ABSOLUTE)
     string(LENGTH "${value}" value_length)

     if(path_length EQUAL value_length AND path STREQUAL value)
       set("${outvar}" "\${${name}}")
       break()
     elseif(path_length GREATER value_length)
       # We might be in a subdirectory of the value, but we have to be
       # careful about a prefix matching but not being a subdirectory
       # (for example, /usr/lib64 is not a subdirectory of /usr/lib).
       # We'll do this by making sure the next character is a directory
       # separator.
       string(SUBSTRING "${path}" ${value_length} 1 sep)
       if(sep STREQUAL "/")
         string(SUBSTRING "${path}" 0 ${value_length} s)
         if(s STREQUAL value)
           string(SUBSTRING "${path}" "${value_length}" -1 suffix)
           set("${outvar}" "\${${name}}${suffix}")
           break()
         endif()
       endif()
     endif()

     list(REMOVE_AT path_args 0 1)
     list(LENGTH path_args path_args_remaining)
   endwhile()

   set("${outvar}" "${${outvar}}" PARENT_SCOPE)
 endfunction(generate_pkg_config_path)

 function(transform_pc_file INPUT_FILE OUTPUT_FILE VERSION)
   file(READ ${INPUT_FILE} TEXT)

   set(PREFIX "${CMAKE_INSTALL_PREFIX}")
   string(REGEX REPLACE "@prefix@" "${PREFIX}" TEXT ${TEXT})
   string(REGEX REPLACE "@exec_prefix@" "${PREFIX}" TEXT ${TEXT})

   generate_pkg_config_path(LIBDIR "${CMAKE_INSTALL_FULL_LIBDIR}" prefix "${PREFIX}")
   string(REGEX REPLACE "@libdir@" "${LIBDIR}" TEXT ${TEXT})

   generate_pkg_config_path(INCLUDEDIR "${CMAKE_INSTALL_FULL_INCLUDEDIR}" prefix "${PREFIX}")
   string(REGEX REPLACE "@includedir@" "${INCLUDEDIR}" TEXT ${TEXT})

   string(REGEX REPLACE "@PACKAGE_VERSION@" "${VERSION}" TEXT ${TEXT})

   file(WRITE ${OUTPUT_FILE} ${TEXT})
 endfunction()

 transform_pc_file("scripts/libbrotlicommon.pc.in" "${CMAKE_CURRENT_BINARY_DIR}/libbrotlicommon.pc" "${BROTLI_VERSION}")

 transform_pc_file("scripts/libbrotlidec.pc.in" "${CMAKE_CURRENT_BINARY_DIR}/libbrotlidec.pc" "${BROTLI_VERSION}")

 transform_pc_file("scripts/libbrotlienc.pc.in" "${CMAKE_CURRENT_BINARY_DIR}/libbrotlienc.pc" "${BROTLI_VERSION}")

 if(NOT BROTLI_BUNDLED_MODE)
   install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libbrotlicommon.pc"
     DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
   install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libbrotlidec.pc"
     DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
   install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libbrotlienc.pc"
     DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
 endif()

 if (ENABLE_COVERAGE STREQUAL "yes")
   SETUP_TARGET_FOR_COVERAGE(coverage test coverage)
 endif ()
	# Ubuntu 12.04 LTS has CMake 2.8.7, and is an important target since
	# several CI services, such as Travis and Drone, use it. Solaris 11
	# has 2.8.6, and it's not difficult to support if you already have to
	# support 2.8.7.
	cmake_minimum_required(VERSION 2.8.6)

	project(brotli C)

	# If Brotli is being bundled in another project, we don't want to
	# install anything. However, we want to let people override this, so
	# we'll use the BROTLI_BUNDLED_MODE variable to let them do that; just
	# set it to OFF in your project before you add_subdirectory(brotli).
	get_directory_property(BROTLI_PARENT_DIRECTORY PARENT_DIRECTORY)
	if(NOT DEFINED BROTLI_BUNDLED_MODE)
	# Bundled mode hasn't been set one way or the other, set the default
	# depending on whether or not we are the top-level project.
	if(BROTLI_PARENT_DIRECTORY)
	set(BROTLI_BUNDLED_MODE ON)
	else()
	set(BROTLI_BUNDLED_MODE OFF)
	endif()
	endif()
	mark_as_advanced(BROTLI_BUNDLED_MODE)

	include(GNUInstallDirs)

	# Parse version information from common/version.h. Normally we would
	# define these values here and write them out to configuration file(s)
	# (i.e., config.h), but in this case we parse them from
	# common/version.h to be less intrusive.
	function(hex_to_dec HEXADECIMAL DECIMAL)
	string(TOUPPER "${HEXADECIMAL}" _tail)
	set(_decimal 0)
	string(LENGTH "${_tail}" _tail_length)
	while (_tail_length GREATER 0)
	math(EXPR _decimal "${_decimal} * 16")
	string(SUBSTRING "${_tail}" 0 1 _digit)
	string(SUBSTRING "${_tail}" 1 -1 _tail)
	if (_digit STREQUAL "A")
	math(EXPR _decimal "${_decimal} + 10")
	elseif (_digit STREQUAL "B")
	math(EXPR _decimal "${_decimal} + 11")
	elseif (_digit STREQUAL "C")
	math(EXPR _decimal "${_decimal} + 12")
	elseif (_digit STREQUAL "D")
	math(EXPR _decimal "${_decimal} + 13")
	elseif (_digit STREQUAL "E")
	math(EXPR _decimal "${_decimal} + 14")
	elseif (_digit STREQUAL "F")
	math(EXPR _decimal "${_decimal} + 15")
	else()
	math(EXPR _decimal "${_decimal} + ${_digit}")
	endif()
	string(LENGTH "${_tail}" _tail_length)
	endwhile()
	set(${DECIMAL} ${_decimal} PARENT_SCOPE)
	endfunction(hex_to_dec)

	# Version information
	file(STRINGS "c/common/version.h" _brotli_version_line REGEX "^#define BROTLI_VERSION (0x[0-9a-fA-F]+)$")
	string(REGEX REPLACE "^#define BROTLI_VERSION 0x([0-9a-fA-F]+)$" "\\1" _brotli_version_hex "${_brotli_version_line}")
	hex_to_dec("${_brotli_version_hex}" _brotli_version)
	math(EXPR BROTLI_VERSION_MAJOR "${_brotli_version} >> 24")
	math(EXPR BROTLI_VERSION_MINOR "(${_brotli_version} >> 12) & 4095")
	math(EXPR BROTLI_VERSION_PATCH "${_brotli_version} & 4095")
	set(BROTLI_VERSION "${BROTLI_VERSION_MAJOR}.${BROTLI_VERSION_MINOR}.${BROTLI_VERSION_PATCH}")
	mark_as_advanced(BROTLI_VERSION BROTLI_VERSION_MAJOR BROTLI_VERSION_MINOR BROTLI_VERSION_PATCH)

	# ABI Version information
	file(STRINGS "c/common/version.h" _brotli_abi_info_line REGEX "^#define BROTLI_ABI_VERSION (0x[0-9a-fA-F]+)$")
	string(REGEX REPLACE "^#define BROTLI_ABI_VERSION 0x([0-9a-fA-F]+)$" "\\1" _brotli_abi_info_hex "${_brotli_abi_info_line}")
	hex_to_dec("${_brotli_abi_info_hex}" _brotli_abi_info)
	math(EXPR BROTLI_ABI_CURRENT "${_brotli_abi_info} >> 24")
	math(EXPR BROTLI_ABI_REVISION "(${_brotli_abi_info} >> 12) & 4095")
	math(EXPR BROTLI_ABI_AGE "${_brotli_abi_info} & 4095")
	math(EXPR BROTLI_ABI_COMPATIBILITY "${BROTLI_ABI_CURRENT} - ${BROTLI_ABI_AGE}")
	mark_as_advanced(BROTLI_ABI_CURRENT BROTLI_ABI_REVISION BROTLI_ABI_AGE BROTLI_ABI_COMPATIBILITY)

	if (ENABLE_SANITIZER)
	set(CMAKE_C_FLAGS " ${CMAKE_C_FLAGS} -fsanitize=${ENABLE_SANITIZER}")
	set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -fsanitize=${ENABLE_SANITIZER}")
	set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=${ENABLE_SANITIZER}")

	# By default, brotli depends on undefined behavior, but setting
	# BROTLI_BUILD_PORTABLE should result in a build which does not.
	if(ENABLE_SANITIZER STREQUAL "undefined")
	add_definitions(-DBROTLI_BUILD_PORTABLE)
	endif()
	endif ()

	include(CheckFunctionExists)
	set(LIBM_LIBRARY)
	CHECK_FUNCTION_EXISTS(log2 LOG2_RES)
	if(NOT LOG2_RES)
	set(orig_req_libs "${CMAKE_REQUIRED_LIBRARIES}")
	set(CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES};m")
	CHECK_FUNCTION_EXISTS(log2 LOG2_LIBM_RES)
	if(LOG2_LIBM_RES)
	set(LIBM_LIBRARY "m")
	else()
	message(FATAL_ERROR "log2() not found")
	endif()

	set(CMAKE_REQUIRED_LIBRARIES "${orig_req_libs}")
	unset(LOG2_LIBM_RES)
	unset(orig_req_libs)
	endif()
	unset(LOG2_RES)

	set(BROTLI_INCLUDE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/c/include")
	mark_as_advanced(BROTLI_INCLUDE_DIRS)

	set(BROTLI_LIBRARIES_CORE brotlienc brotlidec brotlicommon)
	set(BROTLI_LIBRARIES ${BROTLI_LIBRARIES_CORE} ${LIBM_LIBRARY})
	mark_as_advanced(BROTLI_LIBRARIES)

	set(BROTLI_LIBRARIES_CORE_STATIC brotlienc-static brotlidec-static brotlicommon-static)
	set(BROTLI_LIBRARIES_STATIC ${BROTLI_LIBRARIES_CORE_STATIC} ${LIBM_LIBRARY})
	mark_as_advanced(BROTLI_LIBRARIES_STATIC)

	if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
	add_definitions(-DOS_LINUX)
	elseif(${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
	add_definitions(-DOS_FREEBSD)
	elseif(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
	add_definitions(-DOS_MACOSX)
	endif()

	function(transform_sources_list INPUT_FILE OUTPUT_FILE)
	file(READ ${INPUT_FILE} TEXT)
	string(REGEX REPLACE "\\\\\n" "~continuation~" TEXT ${TEXT})
	string(REGEX REPLACE "([a-zA-Z_][a-zA-Z0-9_])[\t ]=[\t ]([^\n])" "SET(\\1 \\2)" TEXT ${TEXT})
	string(REPLACE "~continuation~" "\n" TEXT ${TEXT})
	file(WRITE ${OUTPUT_FILE} ${TEXT})
	endfunction()

	transform_sources_list("scripts/sources.lst" "${CMAKE_CURRENT_BINARY_DIR}/sources.lst.cmake")
	include("${CMAKE_CURRENT_BINARY_DIR}/sources.lst.cmake")

	add_library(brotlicommon SHARED ${BROTLI_COMMON_C})
	add_library(brotlidec SHARED ${BROTLI_DEC_C})
	add_library(brotlienc SHARED ${BROTLI_ENC_C})

	add_library(brotlicommon-static STATIC ${BROTLI_COMMON_C})
	add_library(brotlidec-static STATIC ${BROTLI_DEC_C})
	add_library(brotlienc-static STATIC ${BROTLI_ENC_C})

	# Older CMake versions does not understand INCLUDE_DIRECTORIES property.
	include_directories(${BROTLI_INCLUDE_DIRS})

	foreach(lib brotlicommon brotlidec brotlienc)
	target_compile_definitions(${lib} PUBLIC "BROTLI_SHARED_COMPILATION" )
	string(TOUPPER "${lib}" LIB)
	set_target_properties (${lib} PROPERTIES DEFINE_SYMBOL "${LIB}_SHARED_COMPILATION" )
	endforeach()

	foreach(lib brotlicommon brotlidec brotlienc brotlicommon-static brotlidec-static brotlienc-static)
	target_link_libraries(${lib} ${LIBM_LIBRARY})
	set_property(TARGET ${lib} APPEND PROPERTY INCLUDE_DIRECTORIES ${BROTLI_INCLUDE_DIRS})
	set_target_properties(${lib} PROPERTIES
	VERSION "${BROTLI_ABI_COMPATIBILITY}.${BROTLI_ABI_AGE}.${BROTLI_ABI_REVISION}"
	SOVERSION "${BROTLI_ABI_COMPATIBILITY}"
	POSITION_INDEPENDENT_CODE TRUE)
	set_property(TARGET ${lib} APPEND PROPERTY INTERFACE_INCLUDE_DIRECTORIES "${BROTLI_INCLUDE_DIRS}")
	endforeach()

	target_link_libraries(brotlidec brotlicommon)
	target_link_libraries(brotlienc brotlicommon)

	target_link_libraries(brotlidec-static brotlicommon-static)
	target_link_libraries(brotlienc-static brotlicommon-static)

	# For projects stuck on older versions of CMake, this will set the
	# BROTLI_INCLUDE_DIRS and BROTLI_LIBRARIES variables so they still
	# have a relatively easy way to use Brotli:
	#
	# include_directories(${BROTLI_INCLUDE_DIRS})
	# target_link_libraries(foo ${BROTLI_LIBRARIES})
	if(BROTLI_PARENT_DIRECTORY)
	set(BROTLI_INCLUDE_DIRS "${BROTLI_INCLUDE_DIRS}" PARENT_SCOPE)
	set(BROTLI_LIBRARIES "${BROTLI_LIBRARIES}" PARENT_SCOPE)
	endif()

	# Build the brotli executable
	add_executable(brotli ${BROTLI_CLI_C})
	target_link_libraries(brotli ${BROTLI_LIBRARIES_STATIC})

	# Installation
	if(NOT BROTLI_BUNDLED_MODE)
	install(
	TARGETS brotli
	RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
	)

	install(
	TARGETS ${BROTLI_LIBRARIES_CORE}
	ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
	LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
	RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
	)

	install(
	TARGETS ${BROTLI_LIBRARIES_CORE_STATIC}
	ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
	LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
	RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
	)

	install(
	DIRECTORY ${BROTLI_INCLUDE_DIRS}/brotli
	DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
	)
	endif()

	# Tests

	# If we're targeting Windows but not running on Windows, we need Wine
	# to run the tests...
	if(NOT BROTLI_DISABLE_TESTS)
	if(WIN32 AND NOT CMAKE_HOST_WIN32)
	find_program(BROTLI_WRAPPER NAMES wine)

	if(NOT BROTLI_WRAPPER)
	message(STATUS "wine not found, disabling tests")
	set(BROTLI_DISABLE_TESTS TRUE)
	endif()
	endif()
	endif()

	# If our compiler is a cross-compiler that we know about (arm/aarch64),
	# then we need to use qemu to execute the tests.
	if(NOT BROTLI_DISABLE_TESTS)
	if ("${CMAKE_C_COMPILER}" MATCHES "^./arm-linux-gnueabihf-.$")
	message(STATUS "Detected arm-linux-gnueabihf cross-compilation")
	set(BROTLI_WRAPPER "qemu-arm")
	set(BROTLI_WRAPPER_LD_PREFIX "/usr/arm-linux-gnueabihf")
	endif()

	if ("${CMAKE_C_COMPILER}" MATCHES "^./arm-linux-gnueabi-.$")
	message(STATUS "Detected arm-linux-gnueabi cross-compilation")
	set(BROTLI_WRAPPER "qemu-arm")
	set(BROTLI_WRAPPER_LD_PREFIX "/usr/arm-linux-gnueabi")
	endif()

	if ("${CMAKE_C_COMPILER}" MATCHES "^./aarch64-linux-gnu-.$")
	message(STATUS "Detected aarch64-linux-gnu cross-compilation")
	set(BROTLI_WRAPPER "qemu-aarch64")
	set(BROTLI_WRAPPER_LD_PREFIX "/usr/aarch64-linux-gnu")
	endif()
	endif()

	if(NOT BROTLI_DISABLE_TESTS)
	include(CTest)
	enable_testing()

	set(ROUNDTRIP_INPUTS
	tests/testdata/alice29.txt
	tests/testdata/asyoulik.txt
	tests/testdata/lcet10.txt
	tests/testdata/plrabn12.txt
	c/enc/encode.c
	c/common/dictionary.h
	c/dec/decode.c)

	foreach(INPUT ${ROUNDTRIP_INPUTS})
	get_filename_component(OUTPUT_NAME "${INPUT}" NAME)

	set(OUTPUT_FILE "${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_NAME}")
	set(INPUT_FILE "${CMAKE_CURRENT_SOURCE_DIR}/${INPUT}")

	foreach(quality 1 6 9 11)
	add_test(NAME "${BROTLI_TEST_PREFIX}roundtrip/${INPUT}/${quality}"
	COMMAND "${CMAKE_COMMAND}"
	-DBROTLI_WRAPPER=${BROTLI_WRAPPER}
	-DBROTLI_WRAPPER_LD_PREFIX=${BROTLI_WRAPPER_LD_PREFIX}
	-DBROTLI_CLI=$<TARGET_FILE:brotli>
	-DQUALITY=${quality}
	-DINPUT=${INPUT_FILE}
	-DOUTPUT=${OUTPUT_FILE}.${quality}
	-P ${CMAKE_CURRENT_SOURCE_DIR}/tests/run-roundtrip-test.cmake)
	endforeach()
	endforeach()

	file(GLOB_RECURSE
	COMPATIBILITY_INPUTS
	RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}
	tests/testdata/.compressed)

	foreach(INPUT ${COMPATIBILITY_INPUTS})
	add_test(NAME "${BROTLI_TEST_PREFIX}compatibility/${INPUT}"
	COMMAND "${CMAKE_COMMAND}"
	-DBROTLI_WRAPPER=${BROTLI_WRAPPER}
	-DBROTLI_WRAPPER_LD_PREFIX=${BROTLI_WRAPPER_LD_PREFIX}
	-DBROTLI_CLI=$<TARGET_FILE:brotli>
	-DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/${INPUT}
	-P ${CMAKE_CURRENT_SOURCE_DIR}/tests/run-compatibility-test.cmake)
	endforeach()
	endif()

	# Generate a pkg-config files

	function(generate_pkg_config_path outvar path)
	string(LENGTH "${path}" path_length)

	set(path_args ${ARGV})
	list(REMOVE_AT path_args 0 1)
	list(LENGTH path_args path_args_remaining)

	set("${outvar}" "${path}")

	while(path_args_remaining GREATER 1)
	list(GET path_args 0 name)
	list(GET path_args 1 value)

	get_filename_component(value_full "${value}" ABSOLUTE)
	string(LENGTH "${value}" value_length)

	if(path_length EQUAL value_length AND path STREQUAL value)
	set("${outvar}" "\${${name}}")
	break()
	elseif(path_length GREATER value_length)
	# We might be in a subdirectory of the value, but we have to be
	# careful about a prefix matching but not being a subdirectory
	# (for example, /usr/lib64 is not a subdirectory of /usr/lib).
	# We'll do this by making sure the next character is a directory
	# separator.
	string(SUBSTRING "${path}" ${value_length} 1 sep)
	if(sep STREQUAL "/")
	string(SUBSTRING "${path}" 0 ${value_length} s)
	if(s STREQUAL value)
	string(SUBSTRING "${path}" "${value_length}" -1 suffix)
	set("${outvar}" "\${${name}}${suffix}")
	break()
	endif()
	endif()
	endif()

	list(REMOVE_AT path_args 0 1)
	list(LENGTH path_args path_args_remaining)
	endwhile()

	set("${outvar}" "${${outvar}}" PARENT_SCOPE)
	endfunction(generate_pkg_config_path)

	function(transform_pc_file INPUT_FILE OUTPUT_FILE VERSION)
	file(READ ${INPUT_FILE} TEXT)

	set(PREFIX "${CMAKE_INSTALL_PREFIX}")
	string(REGEX REPLACE "@prefix@" "${PREFIX}" TEXT ${TEXT})
	string(REGEX REPLACE "@exec_prefix@" "${PREFIX}" TEXT ${TEXT})

	generate_pkg_config_path(LIBDIR "${CMAKE_INSTALL_FULL_LIBDIR}" prefix "${PREFIX}")
	string(REGEX REPLACE "@libdir@" "${LIBDIR}" TEXT ${TEXT})

	generate_pkg_config_path(INCLUDEDIR "${CMAKE_INSTALL_FULL_INCLUDEDIR}" prefix "${PREFIX}")
	string(REGEX REPLACE "@includedir@" "${INCLUDEDIR}" TEXT ${TEXT})

	string(REGEX REPLACE "@PACKAGE_VERSION@" "${VERSION}" TEXT ${TEXT})

	file(WRITE ${OUTPUT_FILE} ${TEXT})
	endfunction()

	transform_pc_file("scripts/libbrotlicommon.pc.in" "${CMAKE_CURRENT_BINARY_DIR}/libbrotlicommon.pc" "${BROTLI_VERSION}")

	transform_pc_file("scripts/libbrotlidec.pc.in" "${CMAKE_CURRENT_BINARY_DIR}/libbrotlidec.pc" "${BROTLI_VERSION}")

	transform_pc_file("scripts/libbrotlienc.pc.in" "${CMAKE_CURRENT_BINARY_DIR}/libbrotlienc.pc" "${BROTLI_VERSION}")

	if(NOT BROTLI_BUNDLED_MODE)
	install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libbrotlicommon.pc"
	DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
	install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libbrotlidec.pc"
	DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
	install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libbrotlienc.pc"
	DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
	endif()

	if (ENABLE_COVERAGE STREQUAL "yes")
	SETUP_TARGET_FOR_COVERAGE(coverage test coverage)
	endif ()