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CMakeLists.txt
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cmake_minimum_required(VERSION 2.8.12...3.28)
if(CMAKE_EXECUTABLE_SUFFIX)
set(CMAKE_EXECUTABLE_SUFFIX_TMP ${CMAKE_EXECUTABLE_SUFFIX})
endif()
project(libjpeg-turbo C)
set(VERSION 3.0.5)
set(COPYRIGHT_YEAR "1991-2024")
string(REPLACE "." ";" VERSION_TRIPLET ${VERSION})
list(GET VERSION_TRIPLET 0 VERSION_MAJOR)
list(GET VERSION_TRIPLET 1 VERSION_MINOR)
list(GET VERSION_TRIPLET 2 VERSION_REVISION)
function(pad_number NUMBER OUTPUT_LEN)
string(LENGTH "${${NUMBER}}" INPUT_LEN)
if(INPUT_LEN LESS OUTPUT_LEN)
math(EXPR ZEROES "${OUTPUT_LEN} - ${INPUT_LEN} - 1")
set(NUM ${${NUMBER}})
foreach(C RANGE ${ZEROES})
set(NUM "0${NUM}")
endforeach()
set(${NUMBER} ${NUM} PARENT_SCOPE)
endif()
endfunction()
set(TMP_VERSION_MINOR ${VERSION_MINOR})
set(TMP_VERSION_REVISION ${VERSION_REVISION})
pad_number(TMP_VERSION_MINOR 3)
pad_number(TMP_VERSION_REVISION 3)
set(LIBJPEG_TURBO_VERSION_NUMBER
${VERSION_MAJOR}${TMP_VERSION_MINOR}${TMP_VERSION_REVISION})
set(MSVC_LIKE 0)
if(MSVC OR CMAKE_C_SIMULATE_ID STREQUAL "MSVC")
set(MSVC_LIKE 1)
endif()
# The libjpeg-turbo build system has never supported and will never support
# being integrated into another build system using add_subdirectory(), because
# doing so would require that we (minimally):
#
# 1. avoid using certain CMake variables, such as CMAKE_SOURCE_DIR,
# CMAKE_BINARY_DIR, and CMAKE_PROJECT_NAME;
# 2. avoid using implicit include directories and relative paths;
# 3. optionally provide a way to skip the installation of libjpeg-turbo
# components when the 'install' target is built;
# 4. optionally provide a way to postfix target names, to avoid namespace
# conflicts;
# 5. restructure the top-level CMakeLists.txt so that it properly sets the
# PROJECT_VERSION variable; and
# 6. design automated regression tests to ensure that new commits don't break
# any of the above.
#
# Even if we did all of that, issues would still arise, because it is
# impossible for an upstream build system to anticipate the widely varying
# needs of every downstream build system. That's why the CMake
# ExternalProject_Add() function exists. Downstream projects that wish to
# integrate libjpeg-turbo as a subdirectory should either use
# ExternalProject_Add() or make downstream modifications to the libjpeg-turbo
# build system to suit their specific needs. Please do not file bug reports,
# feature requests, or pull requests regarding this.
if(NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
message(FATAL_ERROR "The libjpeg-turbo build system cannot be integrated into another build system using add_subdirectory(). Use ExternalProject_Add() instead.")
endif()
# CMake 3.14 and later sets CMAKE_MACOSX_BUNDLE to TRUE by default when
# CMAKE_SYSTEM_NAME is iOS, tvOS, or watchOS, which breaks the libjpeg-turbo
# build. (Specifically, when CMAKE_MACOSX_BUNDLE is TRUE, executables for
# Apple platforms are built as application bundles, which causes CMake to
# complain that our install() directives for executables do not specify a
# BUNDLE DESTINATION. Even if CMake did not complain, building executables as
# application bundles would break our iOS packages.)
set(CMAKE_MACOSX_BUNDLE FALSE)
get_property(GENERATOR_IS_MULTI_CONFIG GLOBAL PROPERTY
GENERATOR_IS_MULTI_CONFIG)
# If the GENERATOR_IS_MULTI_CONFIG property doesn't exist (CMake < 3.9), then
# set the GENERATOR_IS_MULTI_CONFIG variable manually if the generator is
# Visual Studio or Xcode (the only multi-config generators in CMake < 3.9).
if(NOT GENERATOR_IS_MULTI_CONFIG AND (MSVC_IDE OR XCODE))
set(GENERATOR_IS_MULTI_CONFIG TRUE)
endif()
string(TIMESTAMP DEFAULT_BUILD "%Y%m%d")
set(BUILD ${DEFAULT_BUILD} CACHE STRING "Build string (default: ${DEFAULT_BUILD})")
# NOTE: On Windows, this does nothing except when using MinGW or Cygwin.
# CMAKE_BUILD_TYPE has no meaning in Visual Studio, and it always defaults to
# Debug when using NMake.
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Release)
endif()
message(STATUS "CMAKE_BUILD_TYPE = ${CMAKE_BUILD_TYPE}")
message(STATUS "VERSION = ${VERSION}, BUILD = ${BUILD}")
include(cmakescripts/PackageInfo.cmake)
# Detect CPU type and whether we're building 64-bit or 32-bit code
math(EXPR BITS "${CMAKE_SIZEOF_VOID_P} * 8")
string(TOLOWER ${CMAKE_SYSTEM_PROCESSOR} CMAKE_SYSTEM_PROCESSOR_LC)
set(COUNT 1)
foreach(ARCH ${CMAKE_OSX_ARCHITECTURES})
if(COUNT GREATER 1)
message(FATAL_ERROR "libjpeg-turbo contains assembly code, so it cannot be built with multiple values in CMAKE_OSX_ARCHITECTURES.")
endif()
math(EXPR COUNT "${COUNT}+1")
endforeach()
if(CMAKE_SYSTEM_PROCESSOR_LC MATCHES "x86_64" OR
CMAKE_SYSTEM_PROCESSOR_LC MATCHES "amd64" OR
CMAKE_SYSTEM_PROCESSOR_LC MATCHES "i[0-9]86" OR
CMAKE_SYSTEM_PROCESSOR_LC MATCHES "x86" OR
CMAKE_SYSTEM_PROCESSOR_LC MATCHES "ia32")
if(BITS EQUAL 64 OR CMAKE_C_COMPILER_ABI MATCHES "ELF X32")
set(CPU_TYPE x86_64)
else()
set(CPU_TYPE i386)
endif()
if(NOT CMAKE_SYSTEM_PROCESSOR STREQUAL ${CPU_TYPE})
set(CMAKE_SYSTEM_PROCESSOR ${CPU_TYPE})
endif()
elseif(CMAKE_SYSTEM_PROCESSOR_LC STREQUAL "aarch64" OR
CMAKE_SYSTEM_PROCESSOR_LC MATCHES "^arm")
if(BITS EQUAL 64)
set(CPU_TYPE arm64)
else()
set(CPU_TYPE arm)
endif()
elseif(CMAKE_SYSTEM_PROCESSOR_LC MATCHES "^ppc" OR
CMAKE_SYSTEM_PROCESSOR_LC MATCHES "^powerpc")
set(CPU_TYPE powerpc)
else()
set(CPU_TYPE ${CMAKE_SYSTEM_PROCESSOR_LC})
endif()
if(CMAKE_OSX_ARCHITECTURES MATCHES "x86_64" OR
CMAKE_OSX_ARCHITECTURES MATCHES "arm64" OR
CMAKE_OSX_ARCHITECTURES MATCHES "i386")
set(CPU_TYPE ${CMAKE_OSX_ARCHITECTURES})
endif()
if(CMAKE_OSX_ARCHITECTURES MATCHES "ppc")
set(CPU_TYPE powerpc)
endif()
if(MSVC_IDE AND CMAKE_GENERATOR_PLATFORM MATCHES "arm64")
set(CPU_TYPE arm64)
endif()
message(STATUS "${BITS}-bit build (${CPU_TYPE})")
###############################################################################
# INSTALL DIRECTORIES
###############################################################################
if(WIN32)
if(MSVC_LIKE)
set(CMAKE_INSTALL_DEFAULT_PREFIX "c:/${CMAKE_PROJECT_NAME}")
else()
set(CMAKE_INSTALL_DEFAULT_PREFIX "c:/${CMAKE_PROJECT_NAME}-gcc")
endif()
if(BITS EQUAL 64)
set(CMAKE_INSTALL_DEFAULT_PREFIX "${CMAKE_INSTALL_DEFAULT_PREFIX}64")
endif()
else()
if(NOT CMAKE_INSTALL_DEFAULT_PREFIX)
set(CMAKE_INSTALL_DEFAULT_PREFIX /opt/${CMAKE_PROJECT_NAME})
endif()
endif()
if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
set(CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_DEFAULT_PREFIX}" CACHE PATH
"Directory into which to install ${CMAKE_PROJECT_NAME} (default: ${CMAKE_INSTALL_DEFAULT_PREFIX})"
FORCE)
endif()
message(STATUS "CMAKE_INSTALL_PREFIX = ${CMAKE_INSTALL_PREFIX}")
# When the prefix is /opt/${CMAKE_PROJECT_NAME}, we assume that an "official"
# build is being created, and thus we install things into specific locations.
if(CMAKE_INSTALL_PREFIX STREQUAL "${CMAKE_INSTALL_DEFAULT_PREFIX}")
set(CMAKE_INSTALL_DEFAULT_DATAROOTDIR "")
set(CMAKE_INSTALL_DEFAULT_DOCDIR "<CMAKE_INSTALL_DATAROOTDIR>/doc")
set(CMAKE_INSTALL_DEFAULT_JAVADIR "<CMAKE_INSTALL_DATAROOTDIR>/classes")
if(UNIX AND NOT APPLE)
if(BITS EQUAL 64)
set(CMAKE_INSTALL_DEFAULT_LIBDIR "lib64")
elseif(CMAKE_C_COMPILER_ABI MATCHES "ELF X32")
set(CMAKE_INSTALL_DEFAULT_LIBDIR "libx32")
else()
set(CMAKE_INSTALL_DEFAULT_LIBDIR "lib32")
endif()
endif()
endif()
include(cmakescripts/GNUInstallDirs.cmake)
macro(report_directory var)
if(CMAKE_INSTALL_${var} STREQUAL CMAKE_INSTALL_FULL_${var})
message(STATUS "CMAKE_INSTALL_${var} = ${CMAKE_INSTALL_${var}}")
else()
message(STATUS "CMAKE_INSTALL_${var} = ${CMAKE_INSTALL_${var}} (${CMAKE_INSTALL_FULL_${var}})")
endif()
mark_as_advanced(CLEAR CMAKE_INSTALL_${var})
endmacro()
set(DIRLIST "BINDIR;DATAROOTDIR;DOCDIR;INCLUDEDIR;LIBDIR")
if(UNIX)
list(APPEND DIRLIST "MANDIR")
endif()
foreach(dir ${DIRLIST})
report_directory(${dir})
endforeach()
###############################################################################
# CONFIGURATION OPTIONS
###############################################################################
macro(boolean_number var)
if(${var})
set(${var} 1 ${ARGN})
else()
set(${var} 0 ${ARGN})
endif()
endmacro()
option(ENABLE_SHARED "Build shared libraries" TRUE)
boolean_number(ENABLE_SHARED)
option(ENABLE_STATIC "Build static libraries" TRUE)
boolean_number(ENABLE_STATIC)
option(REQUIRE_SIMD
"Generate a fatal error if SIMD extensions are not available for this platform (default is to fall back to a non-SIMD build)"
FALSE)
boolean_number(REQUIRE_SIMD)
option(WITH_ARITH_DEC
"Include arithmetic decoding support when emulating the libjpeg v6b API/ABI"
TRUE)
boolean_number(WITH_ARITH_DEC)
option(WITH_ARITH_ENC
"Include arithmetic encoding support when emulating the libjpeg v6b API/ABI"
TRUE)
boolean_number(WITH_ARITH_ENC)
if(CMAKE_C_COMPILER_ABI MATCHES "ELF X32")
set(WITH_JAVA 0)
else()
option(WITH_JAVA
"Build Java wrapper for the TurboJPEG API library (implies ENABLE_SHARED=1)"
FALSE)
boolean_number(WITH_JAVA)
endif()
option(WITH_JPEG7
"Emulate libjpeg v7 API/ABI (this makes ${CMAKE_PROJECT_NAME} backward-incompatible with libjpeg v6b)"
FALSE)
boolean_number(WITH_JPEG7)
option(WITH_JPEG8
"Emulate libjpeg v8 API/ABI (this makes ${CMAKE_PROJECT_NAME} backward-incompatible with libjpeg v6b)"
FALSE)
boolean_number(WITH_JPEG8)
option(WITH_SIMD "Include SIMD extensions, if available for this platform" TRUE)
boolean_number(WITH_SIMD)
option(WITH_TURBOJPEG
"Include the TurboJPEG API library and associated test programs" TRUE)
boolean_number(WITH_TURBOJPEG)
option(WITH_FUZZ "Build fuzz targets" FALSE)
macro(report_option var desc)
if(${var})
message(STATUS "${desc} enabled (${var} = ${${var}})")
else()
message(STATUS "${desc} disabled (${var} = ${${var}})")
endif()
endmacro()
if(WITH_JAVA)
set(ENABLE_SHARED 1)
endif()
# Explicitly setting CMAKE_POSITION_INDEPENDENT_CODE=FALSE disables PIC for all
# targets, which will cause the shared library builds to fail. Thus, if shared
# libraries are enabled and CMAKE_POSITION_INDEPENDENT_CODE is explicitly set
# to FALSE, we need to unset it, thus restoring the default behavior
# (automatically using PIC for shared library targets.)
if(DEFINED CMAKE_POSITION_INDEPENDENT_CODE AND
NOT CMAKE_POSITION_INDEPENDENT_CODE AND ENABLE_SHARED)
unset(CMAKE_POSITION_INDEPENDENT_CODE CACHE)
endif()
report_option(ENABLE_SHARED "Shared libraries")
report_option(ENABLE_STATIC "Static libraries")
if(ENABLE_SHARED)
set(CMAKE_INSTALL_RPATH ${CMAKE_INSTALL_FULL_LIBDIR})
endif()
if(WITH_JPEG8 OR WITH_JPEG7)
set(WITH_ARITH_ENC 1)
set(WITH_ARITH_DEC 1)
endif()
if(WITH_ARITH_DEC)
set(D_ARITH_CODING_SUPPORTED 1)
endif()
report_option(WITH_ARITH_DEC "Arithmetic decoding support")
if(WITH_ARITH_ENC)
set(C_ARITH_CODING_SUPPORTED 1)
endif()
report_option(WITH_ARITH_ENC "Arithmetic encoding support")
report_option(WITH_TURBOJPEG "TurboJPEG API library")
report_option(WITH_JAVA "TurboJPEG Java wrapper")
if(NOT WITH_JPEG8)
set(MEM_SRCDST_FUNCTIONS "global: jpeg_mem_dest; jpeg_mem_src;")
endif()
# 0: Original libjpeg v6b/v7/v8 API/ABI
#
# libjpeg v6b/v7 API/ABI emulation:
# 1: + In-memory source/destination managers (libjpeg-turbo 1.3.x)
# 2: + Partial image decompression functions (libjpeg-turbo 1.5.x)
# 3: + ICC functions (libjpeg-turbo 2.0.x)
# 4: + 12-bit-per-sample and lossless functions (libjpeg-turbo 3.0.x)
#
# libjpeg v8 API/ABI emulation:
# 1: + Partial image decompression functions (libjpeg-turbo 1.5.x)
# 2: + ICC functions (libjpeg-turbo 2.0.x)
# 3: + 12-bit-per-sample and lossless functions (libjpeg-turbo 3.0.x)
set(SO_AGE 3)
if(NOT WITH_JPEG8)
set(SO_AGE 4)
endif()
if(WITH_JPEG8)
set(JPEG_LIB_VERSION 80)
elseif(WITH_JPEG7)
set(JPEG_LIB_VERSION 70)
else()
set(JPEG_LIB_VERSION 62)
endif()
math(EXPR JPEG_LIB_VERSION_DIV10 "${JPEG_LIB_VERSION} / 10")
math(EXPR JPEG_LIB_VERSION_MOD10 "${JPEG_LIB_VERSION} % 10")
if(JPEG_LIB_VERSION STREQUAL "62")
set(DEFAULT_SO_MAJOR_VERSION ${JPEG_LIB_VERSION})
else()
set(DEFAULT_SO_MAJOR_VERSION ${JPEG_LIB_VERSION_DIV10})
endif()
if(JPEG_LIB_VERSION STREQUAL "80")
set(DEFAULT_SO_MINOR_VERSION 2)
else()
set(DEFAULT_SO_MINOR_VERSION 0)
endif()
# This causes SO_MAJOR_VERSION/SO_MINOR_VERSION to reset to defaults if
# WITH_JPEG7 or WITH_JPEG8 has changed.
if((DEFINED WITH_JPEG7_INT AND NOT WITH_JPEG7 EQUAL WITH_JPEG7_INT) OR
(DEFINED WITH_JPEG8_INT AND NOT WITH_JPEG8 EQUAL WITH_JPEG8_INT))
set(FORCE_SO_VERSION "FORCE")
endif()
set(WITH_JPEG7_INT ${WITH_JPEG7} CACHE INTERNAL "")
set(WITH_JPEG8_INT ${WITH_JPEG8} CACHE INTERNAL "")
set(SO_MAJOR_VERSION ${DEFAULT_SO_MAJOR_VERSION} CACHE STRING
"Major version of the libjpeg API shared library (default: ${DEFAULT_SO_MAJOR_VERSION})"
${FORCE_SO_VERSION})
set(SO_MINOR_VERSION ${DEFAULT_SO_MINOR_VERSION} CACHE STRING
"Minor version of the libjpeg API shared library (default: ${DEFAULT_SO_MINOR_VERSION})"
${FORCE_SO_VERSION})
set(JPEG_LIB_VERSION_DECIMAL "${JPEG_LIB_VERSION_DIV10}.${JPEG_LIB_VERSION_MOD10}")
message(STATUS "Emulating libjpeg API/ABI v${JPEG_LIB_VERSION_DECIMAL} (WITH_JPEG7 = ${WITH_JPEG7}, WITH_JPEG8 = ${WITH_JPEG8})")
message(STATUS "libjpeg API shared library version = ${SO_MAJOR_VERSION}.${SO_AGE}.${SO_MINOR_VERSION}")
# Because the TurboJPEG API library uses versioned symbols and changes the
# names of functions whenever they are modified in a backward-incompatible
# manner, it is always backward-ABI-compatible with itself, so the major and
# minor SO versions don't change. However, we increase the middle number (the
# SO "age") whenever functions are added to the API, because adding functions
# affects forward API/ABI compatibility.
set(TURBOJPEG_SO_MAJOR_VERSION 0)
# 0: TurboJPEG 1.3.x API
# 1: TurboJPEG 1.4.x API
# The TurboJPEG 1.5.x API modified some of the function prototypes, adding
# the const keyword in front of pointers to unmodified buffers, but that did
# not affect forward API/ABI compatibility.
# 2: TurboJPEG 2.0.x API
# The TurboJPEG 2.1.x API modified the behavior of the tjDecompressHeader3()
# function so that it accepts "abbreviated table specification" (AKA
# "tables-only") datastreams as well as JPEG images, but that did not affect
# forward API/ABI compatibility.
# 3: TurboJPEG 3 API
set(TURBOJPEG_SO_AGE 3)
set(TURBOJPEG_SO_VERSION 0.${TURBOJPEG_SO_AGE}.0)
###############################################################################
# COMPILER SETTINGS
###############################################################################
string(TOUPPER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE_UC)
if(MSVC_LIKE)
option(WITH_CRT_DLL
"Link all ${CMAKE_PROJECT_NAME} libraries and executables with the C run-time DLL (msvcr*.dll) instead of the static C run-time library (libcmt*.lib.) The default is to use the C run-time DLL only with the libraries and executables that need it."
FALSE)
boolean_number(WITH_CRT_DLL)
if(NOT WITH_CRT_DLL)
# Use the static C library for all build types
if(CMAKE_VERSION VERSION_EQUAL "3.15" OR
CMAKE_VERSION VERSION_GREATER "3.15")
if(CMAKE_BUILD_TYPE_UC STREQUAL "DEBUG")
set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreadedDebug)
elseif(MSVC_IDE)
set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
else()
set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreaded)
endif()
message(STATUS "Visual C++ run-time library: ${CMAKE_MSVC_RUNTIME_LIBRARY} (WITH_CRT_DLL = ${WITH_CRT_DLL})")
elseif(MSVC)
foreach(var CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
if(${var} MATCHES "/MD")
string(REGEX REPLACE "/MD" "/MT" ${var} "${${var}}")
endif()
endforeach()
endif()
endif()
add_definitions(-D_CRT_NONSTDC_NO_WARNINGS)
endif()
if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
# Use the maximum optimization level for release builds
foreach(var CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_RELWITHDEBINFO)
if(${var} MATCHES "-O2")
string(REGEX REPLACE "-O2" "-O3" ${var} "${${var}}")
endif()
endforeach()
endif()
if(CMAKE_SYSTEM_NAME STREQUAL "SunOS")
if(CMAKE_C_COMPILER_ID MATCHES "SunPro")
# Use the maximum optimization level for release builds
foreach(var CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_RELWITHDEBINFO)
if(${var} MATCHES "-xO3")
string(REGEX REPLACE "-xO3" "-xO5" ${var} "${${var}}")
endif()
if(${var} MATCHES "-xO2")
string(REGEX REPLACE "-xO2" "-xO5" ${var} "${${var}}")
endif()
endforeach()
endif()
endif()
set(EFFECTIVE_C_FLAGS "${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE_UC}}")
message(STATUS "Compiler flags = ${EFFECTIVE_C_FLAGS}")
set(EFFECTIVE_LD_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_EXE_LINKER_FLAGS_${CMAKE_BUILD_TYPE_UC}}")
message(STATUS "Linker flags = ${EFFECTIVE_LD_FLAGS}")
include(CheckCSourceCompiles)
include(CheckIncludeFiles)
include(CheckTypeSize)
check_type_size("size_t" SIZE_T)
check_type_size("unsigned long" UNSIGNED_LONG)
if(SIZE_T EQUAL UNSIGNED_LONG)
check_c_source_compiles("int main(int argc, char **argv) { unsigned long a = argc; return __builtin_ctzl(a); }"
HAVE_BUILTIN_CTZL)
endif()
if(MSVC_LIKE)
check_include_files("intrin.h" HAVE_INTRIN_H)
endif()
if(UNIX)
if(CMAKE_CROSSCOMPILING)
set(RIGHT_SHIFT_IS_UNSIGNED 0)
else()
include(CheckCSourceRuns)
check_c_source_runs("
#include <stdio.h>
#include <stdlib.h>
static int is_shifting_signed (long arg) {
long res = arg >> 4;
if (res == -0x7F7E80CL)
return 1; /* right shift is signed */
/* see if unsigned-shift hack will fix it. */
/* we can't just test exact value since it depends on width of long... */
res |= 0xFFFFFFFFL << (32-4);
if (res == -0x7F7E80CL)
return 0; /* right shift is unsigned */
printf(\"Right shift isn't acting as I expect it to.\\\\n\");
printf(\"I fear the JPEG software will not work at all.\\\\n\\\\n\");
return 0; /* try it with unsigned anyway */
}
int main (void) {
exit(is_shifting_signed(-0x7F7E80B1L));
}" RIGHT_SHIFT_IS_UNSIGNED)
endif()
endif()
if(NOT MSVC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
check_c_source_compiles("extern const int table[1]; const int __attribute__((visibility(\"hidden\"))) table[1] = { 0 }; int main(void) { return table[0]; }"
HIDDEN_WORKS)
if(HIDDEN_WORKS)
set(HIDDEN "__attribute__((visibility(\"hidden\")))")
message(STATUS "HIDDEN = ${HIDDEN}")
endif()
endif()
if(MSVC)
set(INLINE_OPTIONS "__inline;inline")
else()
set(INLINE_OPTIONS "__inline__;inline")
endif()
option(FORCE_INLINE "Force function inlining" TRUE)
boolean_number(FORCE_INLINE)
if(FORCE_INLINE)
if(MSVC)
list(INSERT INLINE_OPTIONS 0 "__forceinline")
else()
list(INSERT INLINE_OPTIONS 0 "inline __attribute__((always_inline))")
list(INSERT INLINE_OPTIONS 0 "__inline__ __attribute__((always_inline))")
endif()
endif()
foreach(inline ${INLINE_OPTIONS})
check_c_source_compiles("${inline} static int foo(void) { return 0; } int main(void) { return foo(); }"
INLINE_WORKS)
if(INLINE_WORKS)
set(INLINE ${inline})
break()
endif()
endforeach()
if(NOT INLINE_WORKS)
message(FATAL_ERROR "Could not determine how to inline functions.")
endif()
message(STATUS "INLINE = ${INLINE} (FORCE_INLINE = ${FORCE_INLINE})")
if(MSVC)
set(THREAD_LOCAL "__declspec(thread)")
else()
set(THREAD_LOCAL "__thread")
endif()
check_c_source_compiles("static ${THREAD_LOCAL} int i; int main(void) { i = 0; return i; }"
HAVE_THREAD_LOCAL)
if(HAVE_THREAD_LOCAL)
message(STATUS "THREAD_LOCAL = ${THREAD_LOCAL}")
else()
message(WARNING "Thread-local storage is not available. The TurboJPEG API library's global error handler will not be thread-safe.")
unset(THREAD_LOCAL)
endif()
if(UNIX AND NOT APPLE)
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/conftest.map "VERS_1 { global: *; };")
set(CMAKE_REQUIRED_FLAGS
"-Wl,--version-script,${CMAKE_CURRENT_BINARY_DIR}/conftest.map")
check_c_source_compiles("int main(void) { return 0; }" HAVE_VERSION_SCRIPT)
set(CMAKE_REQUIRED_FLAGS)
file(REMOVE ${CMAKE_CURRENT_BINARY_DIR}/conftest.map)
if(HAVE_VERSION_SCRIPT)
message(STATUS "Linker supports GNU-style version scripts")
set(MAPFLAG "-Wl,--version-script,")
set(TJMAPFLAG "-Wl,--version-script,")
else()
message(STATUS "Linker does not support GNU-style version scripts")
if(CMAKE_SYSTEM_NAME STREQUAL "SunOS")
# The Solaris linker doesn't like our version script for the libjpeg API
# library, but the version script for the TurboJPEG API library should
# still work.
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/conftest.map
"VERS_1 { global: foo; local: *; }; VERS_2 { global: foo2; } VERS_1;")
set(CMAKE_REQUIRED_FLAGS "-Wl,-M,${CMAKE_CURRENT_BINARY_DIR}/conftest.map -shared")
check_c_source_compiles("int foo() { return 0; } int foo2() { return 2; }"
HAVE_MAPFILE)
set(CMAKE_REQUIRED_FLAGS)
file(REMOVE ${CMAKE_CURRENT_BINARY_DIR}/conftest.map)
if(HAVE_MAPFILE)
message(STATUS "Linker supports mapfiles")
set(TJMAPFLAG "-Wl,-M,")
else()
message(STATUS "Linker does not support mapfiles")
endif()
endif()
endif()
endif()
# Generate files
configure_file(jversion.h.in jversion.h)
if(UNIX)
configure_file(libjpeg.map.in libjpeg.map)
endif()
# Include directories and compiler definitions
include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
###############################################################################
# TARGETS
###############################################################################
if(CMAKE_EXECUTABLE_SUFFIX_TMP)
set(CMAKE_EXECUTABLE_SUFFIX ${CMAKE_EXECUTABLE_SUFFIX_TMP})
endif()
message(STATUS "CMAKE_EXECUTABLE_SUFFIX = ${CMAKE_EXECUTABLE_SUFFIX}")
set(JPEG16_SOURCES jcapistd.c jccolor.c jcdiffct.c jclossls.c jcmainct.c
jcprepct.c jcsample.c jdapistd.c jdcolor.c jddiffct.c jdlossls.c jdmainct.c
jdpostct.c jdsample.c jutils.c)
set(JPEG12_SOURCES ${JPEG16_SOURCES} jccoefct.c jcdctmgr.c jdcoefct.c
jddctmgr.c jdmerge.c jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c
jidctred.c jquant1.c jquant2.c)
set(JPEG_SOURCES ${JPEG12_SOURCES} jcapimin.c jchuff.c jcicc.c jcinit.c
jclhuff.c jcmarker.c jcmaster.c jcomapi.c jcparam.c jcphuff.c jctrans.c
jdapimin.c jdatadst.c jdatasrc.c jdhuff.c jdicc.c jdinput.c jdlhuff.c
jdmarker.c jdmaster.c jdphuff.c jdtrans.c jerror.c jfdctflt.c jmemmgr.c
jmemnobs.c jpeg_nbits.c)
if(WITH_ARITH_ENC OR WITH_ARITH_DEC)
set(JPEG_SOURCES ${JPEG_SOURCES} jaricom.c)
endif()
if(WITH_ARITH_ENC)
set(JPEG_SOURCES ${JPEG_SOURCES} jcarith.c)
endif()
if(WITH_ARITH_DEC)
set(JPEG_SOURCES ${JPEG_SOURCES} jdarith.c)
endif()
if(WITH_SIMD)
add_subdirectory(simd)
if(NEON_INTRINSICS)
add_definitions(-DNEON_INTRINSICS)
endif()
else()
message(STATUS "SIMD extensions: None (WITH_SIMD = ${WITH_SIMD})")
endif()
# We have to generate these here, because if the build system tries and fails
# to enable the SIMD extensions, the value of WITH_SIMD will have changed.
configure_file(jconfig.h.in jconfig.h)
configure_file(jconfigint.h.in jconfigint.h)
if(WITH_SIMD)
message(STATUS "SIMD extensions: ${CPU_TYPE} (WITH_SIMD = ${WITH_SIMD})")
if(MSVC_IDE OR XCODE)
set_source_files_properties(${SIMD_OBJS} PROPERTIES GENERATED 1)
endif()
set(SIMD_TARGET_OBJECTS $<TARGET_OBJECTS:simd>)
endif()
if(WITH_JAVA)
add_subdirectory(java)
endif()
if(ENABLE_SHARED)
# Compile a separate version of these source files with 12-bit and 16-bit
# data precision.
add_library(jpeg12 OBJECT ${JPEG12_SOURCES})
set_property(TARGET jpeg12 PROPERTY COMPILE_FLAGS "-DBITS_IN_JSAMPLE=12")
set_target_properties(jpeg12 PROPERTIES POSITION_INDEPENDENT_CODE 1)
add_library(jpeg16 OBJECT ${JPEG16_SOURCES})
set_property(TARGET jpeg16 PROPERTY COMPILE_FLAGS "-DBITS_IN_JSAMPLE=16")
set_target_properties(jpeg16 PROPERTIES POSITION_INDEPENDENT_CODE 1)
add_subdirectory(sharedlib)
endif()
if(ENABLE_STATIC)
# Compile a separate version of these source files with 12-bit and 16-bit
# data precision.
add_library(jpeg12-static OBJECT ${JPEG12_SOURCES})
set_property(TARGET jpeg12-static PROPERTY COMPILE_FLAGS
"-DBITS_IN_JSAMPLE=12")
add_library(jpeg16-static OBJECT ${JPEG16_SOURCES})
set_property(TARGET jpeg16-static PROPERTY COMPILE_FLAGS
"-DBITS_IN_JSAMPLE=16")
add_library(jpeg-static STATIC ${JPEG_SOURCES} ${SIMD_TARGET_OBJECTS}
${SIMD_OBJS} $<TARGET_OBJECTS:jpeg12-static>
$<TARGET_OBJECTS:jpeg16-static>)
if(NOT MSVC_LIKE)
set_target_properties(jpeg-static PROPERTIES OUTPUT_NAME jpeg)
endif()
endif()
if(WITH_TURBOJPEG)
if(ENABLE_SHARED)
set(TURBOJPEG_SOURCES ${JPEG_SOURCES} ${SIMD_TARGET_OBJECTS} ${SIMD_OBJS}
turbojpeg.c transupp.c jdatadst-tj.c jdatasrc-tj.c rdbmp.c rdppm.c
wrbmp.c wrppm.c $<TARGET_OBJECTS:jpeg12> $<TARGET_OBJECTS:jpeg16>)
set(TJMAPFILE ${CMAKE_CURRENT_SOURCE_DIR}/turbojpeg-mapfile)
if(WITH_JAVA)
set(TURBOJPEG_SOURCES ${TURBOJPEG_SOURCES} turbojpeg-jni.c)
include_directories(${JAVA_INCLUDE_PATH} ${JAVA_INCLUDE_PATH2})
set(TJMAPFILE ${CMAKE_CURRENT_SOURCE_DIR}/turbojpeg-mapfile.jni)
endif()
if(MSVC_LIKE)
configure_file(${CMAKE_SOURCE_DIR}/win/turbojpeg.rc.in
${CMAKE_BINARY_DIR}/win/turbojpeg.rc)
set(TURBOJPEG_SOURCES ${TURBOJPEG_SOURCES}
${CMAKE_BINARY_DIR}/win/turbojpeg.rc)
endif()
add_library(turbojpeg12 OBJECT rdppm.c wrppm.c)
set_property(TARGET turbojpeg12 PROPERTY COMPILE_FLAGS
"-DBITS_IN_JSAMPLE=12 -DPPM_SUPPORTED")
set_target_properties(turbojpeg12 PROPERTIES POSITION_INDEPENDENT_CODE 1)
add_library(turbojpeg16 OBJECT rdppm.c wrppm.c)
set_property(TARGET turbojpeg16 PROPERTY COMPILE_FLAGS
"-DBITS_IN_JSAMPLE=16 -DPPM_SUPPORTED")
set_target_properties(turbojpeg16 PROPERTIES POSITION_INDEPENDENT_CODE 1)
add_library(turbojpeg SHARED ${TURBOJPEG_SOURCES}
$<TARGET_OBJECTS:turbojpeg12> $<TARGET_OBJECTS:turbojpeg16>)
set_property(TARGET turbojpeg PROPERTY COMPILE_FLAGS
"-DBMP_SUPPORTED -DPPM_SUPPORTED")
if(WIN32)
set_target_properties(turbojpeg PROPERTIES DEFINE_SYMBOL DLLDEFINE)
endif()
if(MINGW)
set_target_properties(turbojpeg PROPERTIES LINK_FLAGS -Wl,--kill-at)
endif()
if(APPLE AND (NOT CMAKE_OSX_DEPLOYMENT_TARGET OR
CMAKE_OSX_DEPLOYMENT_TARGET VERSION_GREATER 10.4))
if(NOT CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG)
set(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-rpath,")
endif()
set_target_properties(turbojpeg PROPERTIES MACOSX_RPATH 1)
endif()
set_target_properties(turbojpeg PROPERTIES
SOVERSION ${TURBOJPEG_SO_MAJOR_VERSION} VERSION ${TURBOJPEG_SO_VERSION})
if(TJMAPFLAG)
set_target_properties(turbojpeg PROPERTIES
LINK_FLAGS "${TJMAPFLAG}${TJMAPFILE}")
endif()
add_executable(tjunittest tjunittest.c tjutil.c md5/md5.c md5/md5hl.c)
target_link_libraries(tjunittest turbojpeg)
add_executable(tjbench tjbench.c tjutil.c)
target_link_libraries(tjbench turbojpeg)
if(UNIX)
target_link_libraries(tjbench m)
endif()
add_executable(tjexample tjexample.c)
target_link_libraries(tjexample turbojpeg)
add_custom_target(tjdoc COMMAND doxygen -s doxygen.config
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
endif()
if(ENABLE_STATIC)
add_library(turbojpeg12-static OBJECT rdppm.c wrppm.c)
set_property(TARGET turbojpeg12-static PROPERTY COMPILE_FLAGS
"-DBITS_IN_JSAMPLE=12 -DPPM_SUPPORTED")
add_library(turbojpeg16-static OBJECT rdppm.c wrppm.c)
set_property(TARGET turbojpeg16-static PROPERTY COMPILE_FLAGS
"-DBITS_IN_JSAMPLE=16 -DPPM_SUPPORTED")
add_library(turbojpeg-static STATIC ${JPEG_SOURCES} ${SIMD_TARGET_OBJECTS}
${SIMD_OBJS} turbojpeg.c transupp.c jdatadst-tj.c jdatasrc-tj.c rdbmp.c
rdppm.c wrbmp.c wrppm.c $<TARGET_OBJECTS:jpeg12-static>
$<TARGET_OBJECTS:jpeg16-static> $<TARGET_OBJECTS:turbojpeg12-static>
$<TARGET_OBJECTS:turbojpeg16-static>)
set_property(TARGET turbojpeg-static PROPERTY COMPILE_FLAGS
"-DBMP_SUPPORTED -DPPM_SUPPORTED")
if(NOT MSVC_LIKE)
set_target_properties(turbojpeg-static PROPERTIES OUTPUT_NAME turbojpeg)
endif()
add_executable(tjunittest-static tjunittest.c tjutil.c md5/md5.c
md5/md5hl.c)
target_link_libraries(tjunittest-static turbojpeg-static)
add_executable(tjbench-static tjbench.c tjutil.c)
target_link_libraries(tjbench-static turbojpeg-static)
if(UNIX)
target_link_libraries(tjbench-static m)
endif()
endif()
endif()
if(WIN32)
set(USE_SETMODE "-DUSE_SETMODE")
endif()
set(CDJPEG_COMPILE_FLAGS
"-DBMP_SUPPORTED -DGIF_SUPPORTED -DPPM_SUPPORTED -DTARGA_SUPPORTED ${USE_SETMODE}")
if(ENABLE_STATIC)
# Compile a separate version of these source files with 12-bit and 16-bit
# data precision.
add_library(cjpeg12-static OBJECT rdgif.c rdppm.c)
set_property(TARGET cjpeg12-static PROPERTY COMPILE_FLAGS
"-DBITS_IN_JSAMPLE=12 -DGIF_SUPPORTED -DPPM_SUPPORTED")
add_library(cjpeg16-static OBJECT rdgif.c rdppm.c)
set_property(TARGET cjpeg16-static PROPERTY COMPILE_FLAGS
"-DBITS_IN_JSAMPLE=16 -DGIF_SUPPORTED -DPPM_SUPPORTED")
add_executable(cjpeg-static cjpeg.c cdjpeg.c rdbmp.c rdgif.c rdppm.c
rdswitch.c rdtarga.c $<TARGET_OBJECTS:cjpeg12-static>
$<TARGET_OBJECTS:cjpeg16-static>)
set_property(TARGET cjpeg-static PROPERTY COMPILE_FLAGS
${CDJPEG_COMPILE_FLAGS})
target_link_libraries(cjpeg-static jpeg-static)
# Compile a separate version of these source files with 12-bit and 16-bit
# data precision.
add_library(djpeg12-static OBJECT rdcolmap.c wrgif.c wrppm.c)
set_property(TARGET djpeg12-static PROPERTY COMPILE_FLAGS
"-DBITS_IN_JSAMPLE=12 -DGIF_SUPPORTED -DPPM_SUPPORTED")
add_library(djpeg16-static OBJECT wrppm.c)
set_property(TARGET djpeg16-static PROPERTY COMPILE_FLAGS
"-DBITS_IN_JSAMPLE=16 -DPPM_SUPPORTED")
add_executable(djpeg-static djpeg.c cdjpeg.c rdcolmap.c rdswitch.c wrbmp.c
wrgif.c wrppm.c wrtarga.c $<TARGET_OBJECTS:djpeg12-static>
$<TARGET_OBJECTS:djpeg16-static>)
set_property(TARGET djpeg-static PROPERTY COMPILE_FLAGS
${CDJPEG_COMPILE_FLAGS})
target_link_libraries(djpeg-static jpeg-static)
add_executable(jpegtran-static jpegtran.c cdjpeg.c rdswitch.c transupp.c)
target_link_libraries(jpegtran-static jpeg-static)
set_property(TARGET jpegtran-static PROPERTY COMPILE_FLAGS "${USE_SETMODE}")
add_executable(example-static example.c)
target_link_libraries(example-static jpeg-static)
endif()
add_executable(rdjpgcom rdjpgcom.c)
add_executable(wrjpgcom wrjpgcom.c)
###############################################################################
# TESTS
###############################################################################
if(WITH_FUZZ)
add_subdirectory(fuzz)
endif()
add_executable(strtest strtest.c)
add_subdirectory(md5)
if(GENERATOR_IS_MULTI_CONFIG)
set(OBJDIR "\${CTEST_CONFIGURATION_TYPE}/")
else()
set(OBJDIR "")
endif()
enable_testing()
if(WITH_JAVA)
add_test(TJUnitTest
${Java_JAVA_EXECUTABLE} ${JAVAARGS} -cp java/turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest)
add_test(TJUnitTest-yuv
${Java_JAVA_EXECUTABLE} ${JAVAARGS} -cp java/turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -yuv)
add_test(TJUnitTest-yuv-nopad
${Java_JAVA_EXECUTABLE} ${JAVAARGS} -cp java/turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -yuv -noyuvpad)
add_test(TJUnitTest-lossless
${Java_JAVA_EXECUTABLE} ${JAVAARGS} -cp java/turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -lossless)
add_test(TJUnitTest-bi
${Java_JAVA_EXECUTABLE} ${JAVAARGS} -cp java/turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -bi)
add_test(TJUnitTest-bi-yuv
${Java_JAVA_EXECUTABLE} ${JAVAARGS} -cp java/turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -bi -yuv)
add_test(TJUnitTest-bi-yuv-nopad
${Java_JAVA_EXECUTABLE} ${JAVAARGS} -cp java/turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -bi -yuv -noyuvpad)
add_test(TJUnitTest-bi-lossless
${Java_JAVA_EXECUTABLE} ${JAVAARGS} -cp java/turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -bi -lossless)
add_test(TJUnitTest12
${Java_JAVA_EXECUTABLE} ${JAVAARGS} -cp java/turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -precision 12)
add_test(TJUnitTest12-lossless
${Java_JAVA_EXECUTABLE} ${JAVAARGS} -cp java/turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -precision 12 -lossless)
add_test(TJUnitTest16-lossless
${Java_JAVA_EXECUTABLE} ${JAVAARGS} -cp java/turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -precision 16)
endif()
set(TEST_LIBTYPES "")
if(ENABLE_SHARED)
set(TEST_LIBTYPES ${TEST_LIBTYPES} shared)
endif()
if(ENABLE_STATIC)
set(TEST_LIBTYPES ${TEST_LIBTYPES} static)
endif()
set(TESTIMAGES ${CMAKE_CURRENT_SOURCE_DIR}/testimages)
if(CMAKE_CROSSCOMPILING)
file(RELATIVE_PATH TESTIMAGES ${CMAKE_CURRENT_BINARY_DIR} ${TESTIMAGES})
endif()
# The output of the floating point DCT/IDCT algorithms differs depending on the
# type of floating point math used, so the FLOATTEST8 and FLOATTEST12 CMake
# variables must be set in order to tell the testing system which floating
# point results it should expect:
#
# sse = validate against the expected results from the libjpeg-turbo SSE SIMD
# extensions
# no-fp-contract = validate against the expected results from the C code when
# floating point expression contraction is disabled (the
# default with Clang 13 and earlier, when building for
# platforms that lack fused multiply-add [FMA] instructions,
# or when passing -ffp-contract=off to GCC or Clang)
# fp-contract = validate against the expected results from the C code when
# floating point expression contraction is enabled (the default
# with Clang 14 and later, with GCC when building for platforms
# that have fused multiply-add [FMA] instructions, or when
# passing -ffp-contract=fast to GCC or -ffp-contract=on to Clang)
# 387 = validate against the expected results from the C code when the 387 FPU
# is being used for floating point math (which is generally the default
# with x86 compilers)
# msvc = validate against the expected results from the C code when compiled
# with a 32-bit version of Visual C++
if(CPU_TYPE STREQUAL "x86_64" OR CPU_TYPE STREQUAL "i386")
if(WITH_SIMD)
set(DEFAULT_FLOATTEST8 sse)
elseif(CPU_TYPE STREQUAL "x86_64")
set(DEFAULT_FLOATTEST8 no-fp-contract)
endif()
elseif(CPU_TYPE STREQUAL "powerpc" OR CPU_TYPE STREQUAL "arm64")
if(CMAKE_C_COMPILER_ID MATCHES "Clang")
if(CMAKE_C_COMPILER_VERSION VERSION_EQUAL 14.0.0 OR
CMAKE_C_COMPILER_VERSION VERSION_GREATER 14.0.0)
set(DEFAULT_FLOATTEST8 fp-contract)
else()
set(DEFAULT_FLOATTEST8 no-fp-contract)
endif()
elseif(CMAKE_COMPILER_IS_GNUCC)
set(DEFAULT_FLOATTEST8 fp-contract)
endif()
# else we can't really set an intelligent default for FLOATTEST8. The
# appropriate value could be no-fp-contract, fp-contract, 387, or msvc,
# depending on the compiler and compiler options. We leave it to the user to
# set FLOATTEST8 manually.
endif()
# This causes FLOATTEST8 to reset to the default value if WITH_SIMD has
# changed.
if(DEFINED WITH_SIMD_INT AND NOT WITH_SIMD EQUAL WITH_SIMD_INT)
set(FORCE_FLOATTEST8 "FORCE")
endif()
set(WITH_SIMD_INT ${WITH_SIMD} CACHE INTERNAL "")
set(FLOATTEST8 ${DEFAULT_FLOATTEST8} CACHE STRING
"The type of floating point math used by the 8-bit-per-sample floating point DCT/IDCT algorithms. This tells the testing system which numerical results it should expect from those tests. [sse = libjpeg-turbo x86/x86-64 SIMD extensions, no-fp-contract = generic FPU with floating point expression contraction disabled, fp-contract = generic FPU with floating point expression contraction enabled, 387 = 387 FPU, msvc = 32-bit Visual Studio] (default = ${DEFAULT_FLOATTEST8})"
${FORCE_FLOATTEST8})
message(STATUS "FLOATTEST8 = ${FLOATTEST8}")
if(FLOATTEST8)
string(TOUPPER ${FLOATTEST8} FLOATTEST8_UC)
string(REGEX REPLACE "-" "_" FLOATTEST8_UC ${FLOATTEST8_UC})
string(TOLOWER ${FLOATTEST8} FLOATTEST8)
if(NOT FLOATTEST8 STREQUAL "sse" AND
NOT FLOATTEST8 STREQUAL "no-fp-contract" AND
NOT FLOATTEST8 STREQUAL "fp-contract" AND NOT FLOATTEST8 STREQUAL "387" AND
NOT FLOATTEST8 STREQUAL "msvc")
message(FATAL_ERROR "\"${FLOATTEST8}\" is not a valid value for FLOATTEST8.")
endif()
endif()
if(CPU_TYPE STREQUAL "x86_64")
set(DEFAULT_FLOATTEST12 no-fp-contract)
elseif(CPU_TYPE STREQUAL "powerpc" OR CPU_TYPE STREQUAL "arm64")
if(CMAKE_C_COMPILER_ID MATCHES "Clang")
if(CMAKE_C_COMPILER_VERSION VERSION_EQUAL 14.0.0 OR
CMAKE_C_COMPILER_VERSION VERSION_GREATER 14.0.0)
set(DEFAULT_FLOATTEST12 fp-contract)
else()
set(DEFAULT_FLOATTEST12 no-fp-contract)
endif()
elseif(CMAKE_COMPILER_IS_GNUCC)
set(DEFAULT_FLOATTEST12 fp-contract)
endif()
# else we can't really set an intelligent default for FLOATTEST12. The
# appropriate value could be no-fp-contract, fp-contract, or something else,
# depending on the compiler and compiler options. We leave it to the user to
# set FLOATTEST12 manually.
endif()
set(FLOATTEST12 ${DEFAULT_FLOATTEST12} CACHE STRING
"The type of floating point math used by the 12-bit-per-sample floating point DCT/IDCT algorithms. This tells the testing system which numerical results it should expect from those tests. [sse = libjpeg-turbo x86/x86-64 SIMD extensions, no-fp-contract = generic FPU with floating point expression contraction disabled, fp-contract = generic FPU with floating point expression contraction enabled, 387 = 387 FPU, msvc = 32-bit Visual Studio] (default = ${DEFAULT_FLOATTEST12})")
message(STATUS "FLOATTEST12 = ${FLOATTEST12}")
if(FLOATTEST12)
string(TOUPPER ${FLOATTEST12} FLOATTEST12_UC)