cheng/libpng
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
7b2224cb6e
libpng/CMakeLists.txt
Cosmin Truta 7b2224cb6e CMakeLists: Require CMake version 3.1 or newer 
Although CMake version 3.0.2 was previously required, the policies
CMP0053 and CMP0054, introduced only in CMake version 3.1 and used
in this CMakeLists file, can have surprising effects under an older
CMake version.

Simplify the CMakeLists file by setting the global policy version
to 3.1, and remove the specific policy settings.

As an added bonus, remove the vestigial workarounds for all ancient
CMake versions.
2018-11-17 23:39:15 -05:00

931 lines
33 KiB
CMake
Raw Blame History

# CMakeLists.txt
# Copyright (C) 2018 Cosmin Truta
# Copyright (C) 2007,2009-2018 Glenn Randers-Pehrson
# Written by Christian Ehrlicher, 2007
# Revised by Roger Lowman, 2009-2010
# Revised by Clifford Yapp, 2011-2012,2017
# Revised by Roger Leigh, 2016
# Revised by Andreas Franek, 2016
# Revised by Sam Serrels, 2017
# Revised by Vadim Barkov, 2017
# Revised by Vicky Pfau, 2018
# Revised by Cameron Cawley, 2018
# Revised by Cosmin Truta, 2018
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
cmake_minimum_required(VERSION 3.1)
cmake_policy(VERSION 3.1)
project(libpng C ASM)
enable_testing()
set(PNGLIB_MAJOR 1)
set(PNGLIB_MINOR 6)
set(PNGLIB_RELEASE 36)
set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
include(GNUInstallDirs)
# needed packages
# Allow users to specify location of Zlib.
# Useful if zlib is being built alongside this as a sub-project.
option(PNG_BUILD_ZLIB "Custom zlib Location, else find_package is used" OFF)
if(NOT PNG_BUILD_ZLIB)
find_package(ZLIB REQUIRED)
include_directories(${ZLIB_INCLUDE_DIR})
endif()
if(UNIX AND NOT APPLE AND NOT BEOS AND NOT HAIKU)
find_library(M_LIBRARY m)
else()
# libm is not needed and/or not available
set(M_LIBRARY "")
endif()
# COMMAND LINE OPTIONS
option(PNG_SHARED "Build shared lib" ON)
option(PNG_STATIC "Build static lib" ON)
option(PNG_TESTS "Build libpng tests" ON)
# Many more configuration options could be added here
option(PNG_FRAMEWORK "Build OS X framework" OFF)
option(PNG_DEBUG "Build with debug output" OFF)
option(PNG_HARDWARE_OPTIMIZATIONS "Enable hardware optimizations" ON)
set(PNG_PREFIX "" CACHE STRING "Prefix to add to the API function names")
set(DFA_XTRA "" CACHE FILEPATH "File containing extra configuration settings")
if(PNG_HARDWARE_OPTIMIZATIONS)
# set definitions and sources for arm
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^arm" OR
CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch64")
set(PNG_ARM_NEON_POSSIBLE_VALUES check on off)
set(PNG_ARM_NEON "check" CACHE STRING "Enable ARM NEON optimizations:
check: (default) use internal checking code;
off: disable the optimizations;
on: turn on unconditionally.")
set_property(CACHE PNG_ARM_NEON PROPERTY STRINGS
${PNG_ARM_NEON_POSSIBLE_VALUES})
list(FIND PNG_ARM_NEON_POSSIBLE_VALUES ${PNG_ARM_NEON} index)
if(index EQUAL -1)
message(FATAL_ERROR
"PNG_ARM_NEON must be one of [${PNG_ARM_NEON_POSSIBLE_VALUES}]")
elseif(NOT ${PNG_ARM_NEON} STREQUAL "off")
set(libpng_arm_sources
arm/arm_init.c
arm/filter_neon.S
arm/filter_neon_intrinsics.c
arm/palette_neon_intrinsics.c)
if(${PNG_ARM_NEON} STREQUAL "on")
add_definitions(-DPNG_ARM_NEON_OPT=2)
elseif(${PNG_ARM_NEON} STREQUAL "check")
add_definitions(-DPNG_ARM_NEON_CHECK_SUPPORTED)
endif()
else()
add_definitions(-DPNG_ARM_NEON_OPT=0)
endif()
endif()
# set definitions and sources for powerpc
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^powerpc*" OR
CMAKE_SYSTEM_PROCESSOR MATCHES "^ppc64*")
set(PNG_POWERPC_VSX_POSSIBLE_VALUES on off)
set(PNG_POWERPC_VSX "on" CACHE STRING "Enable POWERPC VSX optimizations:
off: disable the optimizations.")
set_property(CACHE PNG_POWERPC_VSX PROPERTY STRINGS
${PNG_POWERPC_VSX_POSSIBLE_VALUES})
list(FIND PNG_POWERPC_VSX_POSSIBLE_VALUES ${PNG_POWERPC_VSX} index)
if(index EQUAL -1)
message(FATAL_ERROR
"PNG_POWERPC_VSX must be one of [${PNG_POWERPC_VSX_POSSIBLE_VALUES}]")
elseif(NOT ${PNG_POWERPC_VSX} STREQUAL "off")
set(libpng_powerpc_sources
powerpc/powerpc_init.c
powerpc/filter_vsx_intrinsics.c)
if(${PNG_POWERPC_VSX} STREQUAL "on")
add_definitions(-DPNG_POWERPC_VSX_OPT=2)
endif()
else()
add_definitions(-DPNG_POWERPC_VSX_OPT=0)
endif()
endif()
# set definitions and sources for intel
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^i?86" OR
CMAKE_SYSTEM_PROCESSOR MATCHES "^x86_64*")
set(PNG_INTEL_SSE_POSSIBLE_VALUES on off)
set(PNG_INTEL_SSE "on" CACHE STRING "Enable INTEL_SSE optimizations:
off: disable the optimizations")
set_property(CACHE PNG_INTEL_SSE PROPERTY STRINGS
${PNG_INTEL_SSE_POSSIBLE_VALUES})
list(FIND PNG_INTEL_SSE_POSSIBLE_VALUES ${PNG_INTEL_SSE} index)
if(index EQUAL -1)
message(FATAL_ERROR
"PNG_INTEL_SSE must be one of [${PNG_INTEL_SSE_POSSIBLE_VALUES}]")
elseif(NOT ${PNG_INTEL_SSE} STREQUAL "off")
set(libpng_intel_sources
intel/intel_init.c
intel/filter_sse2_intrinsics.c)
if(${PNG_INTEL_SSE} STREQUAL "on")
add_definitions(-DPNG_INTEL_SSE_OPT=1)
endif()
else()
add_definitions(-DPNG_INTEL_SSE_OPT=0)
endif()
endif()
# set definitions and sources for MIPS
if(CMAKE_SYSTEM_PROCESSOR MATCHES "mipsel*" OR
CMAKE_SYSTEM_PROCESSOR MATCHES "mips64el*")
set(PNG_MIPS_MSA_POSSIBLE_VALUES on off)
set(PNG_MIPS_MSA "on" CACHE STRING "Enable MIPS_MSA optimizations:
off: disable the optimizations")
set_property(CACHE PNG_MIPS_MSA PROPERTY STRINGS
${PNG_MIPS_MSA_POSSIBLE_VALUES})
list(FIND PNG_MIPS_MSA_POSSIBLE_VALUES ${PNG_MIPS_MSA} index)
if(index EQUAL -1)
message(FATAL_ERROR
"PNG_MIPS_MSA must be one of [${PNG_MIPS_MSA_POSSIBLE_VALUES}]")
elseif(NOT ${PNG_MIPS_MSA} STREQUAL "off")
set(libpng_mips_sources
mips/mips_init.c
mips/filter_msa_intrinsics.c)
if(${PNG_MIPS_MSA} STREQUAL "on")
add_definitions(-DPNG_MIPS_MSA_OPT=2)
endif()
else()
add_definitions(-DPNG_MIPS_MSA_OPT=0)
endif()
endif()
else(PNG_HARDWARE_OPTIMIZATIONS)
# set definitions and sources for arm
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^arm" OR
CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch64")
add_definitions(-DPNG_ARM_NEON_OPT=0)
endif()
# set definitions and sources for powerpc
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^powerpc*" OR
CMAKE_SYSTEM_PROCESSOR MATCHES "^ppc64*")
add_definitions(-DPNG_POWERPC_VSX_OPT=0)
endif()
# set definitions and sources for intel
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^i?86" OR
CMAKE_SYSTEM_PROCESSOR MATCHES "^x86_64*")
add_definitions(-DPNG_INTEL_SSE_OPT=0)
endif()
# set definitions and sources for MIPS
if(CMAKE_SYSTEM_PROCESSOR MATCHES "mipsel*" OR
CMAKE_SYSTEM_PROCESSOR MATCHES "mips64el*")
add_definitions(-DPNG_MIPS_MSA_OPT=0)
endif()
endif(PNG_HARDWARE_OPTIMIZATIONS)
# SET LIBNAME
set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR})
# to distinguish between debug and release lib
set(CMAKE_DEBUG_POSTFIX "d")
include(CheckCSourceCompiles)
option(ld-version-script "Enable linker version script" ON)
if(ld-version-script AND NOT APPLE)
# Check if LD supports linker scripts.
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/conftest.map" "VERS_1 {
global: sym;
local: *;
};
VERS_2 {
global: sym2;
main;
} VERS_1;
")
set(CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS})
set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/conftest.map'")
check_c_source_compiles("void sym(void) {}
void sym2(void) {}
int main(void) {return 0;}
" HAVE_LD_VERSION_SCRIPT)
if(NOT HAVE_LD_VERSION_SCRIPT)
set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE} "-Wl,-M -Wl,${CMAKE_CURRENT_BINARY_DIR}/conftest.map")
check_c_source_compiles("void sym(void) {}
void sym2(void) {}
int main(void) {return 0;}
" HAVE_SOLARIS_LD_VERSION_SCRIPT)
endif()
set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE})
file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/conftest.map")
endif()
# Find symbol prefix. Likely obsolete and unnecessary with recent
# toolchains (it's not done in many other projects).
function(symbol_prefix)
set(SYMBOL_PREFIX)
execute_process(COMMAND "${CMAKE_C_COMPILER}" "-E" "-"
INPUT_FILE /dev/null
OUTPUT_VARIABLE OUT
RESULT_VARIABLE STATUS)
if(CPP_FAIL)
message(WARNING "Failed to run the C preprocessor")
endif()
string(REPLACE "\n" ";" OUT "${OUT}")
foreach(line ${OUT})
string(REGEX MATCH "^PREFIX=" found_match "${line}")
if(found_match)
string(REGEX REPLACE "^PREFIX=(.*\)" "\\1" prefix "${line}")
string(REGEX MATCH "__USER_LABEL_PREFIX__" found_match "${prefix}")
if(found_match)
string(REGEX REPLACE "(.*)__USER_LABEL_PREFIX__(.*)" "\\1\\2" prefix "${prefix}")
endif()
set(SYMBOL_PREFIX "${prefix}")
endif()
endforeach()
message(STATUS "Symbol prefix: ${SYMBOL_PREFIX}")
set(SYMBOL_PREFIX "${SYMBOL_PREFIX}" PARENT_SCOPE)
endfunction()
if(UNIX)
symbol_prefix()
endif()
find_program(AWK NAMES gawk awk)
include_directories(${CMAKE_CURRENT_BINARY_DIR})
if(NOT AWK OR ANDROID)
# No awk available to generate sources; use pre-built pnglibconf.h
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt
${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h)
add_custom_target(genfiles) # Dummy
else()
include(CMakeParseArguments)
# Generate .chk from .out with awk
# generate_chk(INPUT inputfile OUTPUT outputfile [DEPENDS dep1 [dep2...]])
function(generate_chk)
set(options)
set(oneValueArgs INPUT OUTPUT)
set(multiValueArgs DEPENDS)
cmake_parse_arguments(_GC "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(NOT _GC_INPUT)
message(FATAL_ERROR "generate_chk: Missing INPUT argument")
endif()
if(NOT _GC_OUTPUT)
message(FATAL_ERROR "generate_chk: Missing OUTPUT argument")
endif()
add_custom_command(OUTPUT "${_GC_OUTPUT}"
COMMAND "${CMAKE_COMMAND}"
"-DINPUT=${_GC_INPUT}"
"-DOUTPUT=${_GC_OUTPUT}"
-P "${CMAKE_CURRENT_BINARY_DIR}/scripts/genchk.cmake"
DEPENDS "${_GC_INPUT}" ${_GC_DEPENDS}
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
endfunction()
# Generate .out from .c with awk
# generate_out(INPUT inputfile OUTPUT outputfile [DEPENDS dep1 [dep2...]])
function(generate_out)
set(options)
set(oneValueArgs INPUT OUTPUT)
set(multiValueArgs DEPENDS)
cmake_parse_arguments(_GO "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(NOT _GO_INPUT)
message(FATAL_ERROR "generate_out: Missing INPUT argument")
endif()
if(NOT _GO_OUTPUT)
message(FATAL_ERROR "generate_out: Missing OUTPUT argument")
endif()
add_custom_command(OUTPUT "${_GO_OUTPUT}"
COMMAND "${CMAKE_COMMAND}"
"-DINPUT=${_GO_INPUT}"
"-DOUTPUT=${_GO_OUTPUT}"
-P "${CMAKE_CURRENT_BINARY_DIR}/scripts/genout.cmake"
DEPENDS "${_GO_INPUT}" ${_GO_DEPENDS}
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
endfunction()
# Generate specific source file with awk
# generate_source(OUTPUT outputfile [DEPENDS dep1 [dep2...]])
function(generate_source)
set(options)
set(oneValueArgs OUTPUT)
set(multiValueArgs DEPENDS)
cmake_parse_arguments(_GSO "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(NOT _GSO_OUTPUT)
message(FATAL_ERROR "generate_source: Missing OUTPUT argument")
endif()
add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${_GSO_OUTPUT}"
COMMAND "${CMAKE_COMMAND}"
"-DOUTPUT=${_GSO_OUTPUT}"
-P "${CMAKE_CURRENT_BINARY_DIR}/scripts/gensrc.cmake"
DEPENDS ${_GSO_DEPENDS}
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
endfunction()
# Copy file
function(generate_copy source destination)
add_custom_command(OUTPUT "${destination}"
COMMAND "${CMAKE_COMMAND}" -E remove "${destination}"
COMMAND "${CMAKE_COMMAND}" -E copy "${source}"
"${destination}"
DEPENDS "${source}")
endfunction()
# Generate scripts/pnglibconf.h
generate_source(OUTPUT "scripts/pnglibconf.c"
DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.dfa"
"${CMAKE_CURRENT_SOURCE_DIR}/scripts/options.awk"
"${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h")
# Generate pnglibconf.c
generate_source(OUTPUT "pnglibconf.c"
DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.dfa"
"${CMAKE_CURRENT_SOURCE_DIR}/scripts/options.awk"
"${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h")
if(PNG_PREFIX)
set(PNGLIBCONF_H_EXTRA_DEPENDS
"${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out"
"${CMAKE_CURRENT_SOURCE_DIR}/scripts/macro.lst")
set(PNGPREFIX_H_EXTRA_DEPENDS
"${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out")
endif()
generate_out(INPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c"
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out")
# Generate pnglibconf.h
generate_source(OUTPUT "pnglibconf.h"
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out"
${PNGLIBCONF_H_EXTRA_DEPENDS})
generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/intprefix.c"
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out"
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h")
generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/prefix.c"
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out"
DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h"
"${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h"
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out")
# Generate pngprefix.h
generate_source(OUTPUT "pngprefix.h"
DEPENDS ${PNGPREFIX_H_EXTRA_DEPENDS})
generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/sym.c"
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out"
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h")
generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/symbols.c"
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out"
DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h"
"${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h"
"${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt")
generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/vers.c"
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out"
DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h"
"${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h"
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h")
generate_chk(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out"
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk"
DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/checksym.awk"
"${CMAKE_CURRENT_SOURCE_DIR}/scripts/symbols.def")
add_custom_target(symbol-check DEPENDS
"${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk")
generate_copy("${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out"
"${CMAKE_CURRENT_BINARY_DIR}/libpng.sym")
generate_copy("${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out"
"${CMAKE_CURRENT_BINARY_DIR}/libpng.vers")
add_custom_target(genvers DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers")
add_custom_target(gensym DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym")
add_custom_target("genprebuilt"
COMMAND "${CMAKE_COMMAND}"
"-DOUTPUT=scripts/pnglibconf.h.prebuilt"
-P "${CMAKE_CURRENT_BINARY_DIR}/scripts/gensrc.cmake"
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
# A single target handles generation of all generated files. If
# they are depended upon separately by multiple targets, this
# confuses parallel make (it would require a separate top-level
# target for each file to track the dependencies properly).
add_custom_target(genfiles DEPENDS
"${CMAKE_CURRENT_BINARY_DIR}/libpng.sym"
"${CMAKE_CURRENT_BINARY_DIR}/libpng.vers"
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c"
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out"
"${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out")
endif(NOT AWK OR ANDROID)
# OUR SOURCES
set(libpng_public_hdrs
png.h
pngconf.h
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
)
set(libpng_private_hdrs
pngpriv.h
pngdebug.h
pnginfo.h
pngstruct.h
)
if(AWK AND NOT ANDROID)
list(APPEND libpng_private_hdrs "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h")
endif()
set(libpng_sources
${libpng_public_hdrs}
${libpng_private_hdrs}
png.c
pngerror.c
pngget.c
pngmem.c
pngpread.c
pngread.c
pngrio.c
pngrtran.c
pngrutil.c
pngset.c
pngtrans.c
pngwio.c
pngwrite.c
pngwtran.c
pngwutil.c
${libpng_arm_sources}
${libpng_intel_sources}
${libpng_mips_sources}
${libpng_powerpc_sources}
)
set(pngtest_sources
pngtest.c
)
set(pngvalid_sources
contrib/libtests/pngvalid.c
)
set(pngstest_sources
contrib/libtests/pngstest.c
)
set(pngunknown_sources
contrib/libtests/pngunknown.c
)
set(pngimage_sources
contrib/libtests/pngimage.c
)
set(pngfix_sources
contrib/tools/pngfix.c
)
set(png_fix_itxt_sources
contrib/tools/png-fix-itxt.c
)
if(MSVC)
add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
endif()
if(PNG_DEBUG)
add_definitions(-DPNG_DEBUG)
endif()
# NOW BUILD OUR TARGET
include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${ZLIB_INCLUDE_DIR})
unset(PNG_LIB_TARGETS)
if(PNG_SHARED)
add_library(png SHARED ${libpng_sources})
set(PNG_LIB_TARGETS png)
set_target_properties(png PROPERTIES OUTPUT_NAME ${PNG_LIB_NAME})
add_dependencies(png genfiles)
if(MSVC)
# msvc does not append 'lib' - do it here to have consistent name
set_target_properties(png PROPERTIES PREFIX "lib")
set_target_properties(png PROPERTIES IMPORT_PREFIX "lib")
endif()
target_link_libraries(png ${ZLIB_LIBRARY} ${M_LIBRARY})
if(UNIX AND AWK)
if(HAVE_LD_VERSION_SCRIPT)
set_target_properties(png PROPERTIES LINK_FLAGS
"-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'")
elseif(HAVE_SOLARIS_LD_VERSION_SCRIPT)
set_target_properties(png PROPERTIES LINK_FLAGS
"-Wl,-M -Wl,'${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'")
endif()
endif()
endif()
if(PNG_STATIC)
# does not work without changing name
set(PNG_LIB_NAME_STATIC png_static)
add_library(png_static STATIC ${libpng_sources})
add_dependencies(png_static genfiles)
# MSVC doesn't use a different file extension for shared vs. static
# libs. We are able to change OUTPUT_NAME to remove the _static
# for all other platforms.
if(NOT MSVC)
set_target_properties(png_static PROPERTIES
OUTPUT_NAME "${PNG_LIB_NAME}"
CLEAN_DIRECT_OUTPUT 1)
else()
set_target_properties(png_static PROPERTIES
OUTPUT_NAME "${PNG_LIB_NAME}_static"
CLEAN_DIRECT_OUTPUT 1)
endif()
list(APPEND PNG_LIB_TARGETS png_static)
if(MSVC)
# msvc does not append 'lib' - do it here to have consistent name
set_target_properties(png_static PROPERTIES PREFIX "lib")
endif()
target_link_libraries(png_static ${ZLIB_LIBRARY} ${M_LIBRARY})
endif()
if(PNG_FRAMEWORK)
set(PNG_LIB_NAME_FRAMEWORK png_framework)
add_library(png_framework SHARED ${libpng_sources})
add_dependencies(png_framework genfiles)
list(APPEND PNG_LIB_TARGETS png_framework)
set_target_properties(png_framework PROPERTIES
FRAMEWORK TRUE
FRAMEWORK_VERSION ${PNGLIB_VERSION}
MACOSX_FRAMEWORK_SHORT_VERSION_STRING ${PNGLIB_MAJOR}.${PNGLIB_MINOR}
MACOSX_FRAMEWORK_BUNDLE_VERSION ${PNGLIB_VERSION}
MACOSX_FRAMEWORK_IDENTIFIER org.libpng.libpng
XCODE_ATTRIBUTE_INSTALL_PATH "@rpath"
PUBLIC_HEADER "${libpng_public_hdrs}"
OUTPUT_NAME png)
target_link_libraries(png_framework ${ZLIB_LIBRARY} ${M_LIBRARY})
endif()
if(NOT PNG_LIB_TARGETS)
message(SEND_ERROR
"No library variant selected to build. "
"Please enable at least one of the following options: "
"PNG_STATIC, PNG_SHARED, PNG_FRAMEWORK")
endif()
if(PNG_SHARED AND WIN32)
set_target_properties(png PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
endif()
function(png_add_test)
set(options)
set(oneValueArgs NAME COMMAND)
set(multiValueArgs OPTIONS FILES)
cmake_parse_arguments(_PAT "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(NOT _PAT_NAME)
message(FATAL_ERROR "png_add_test: Missing NAME argument")
endif()
if(NOT _PAT_COMMAND)
message(FATAL_ERROR "png_add_test: Missing COMMAND argument")
endif()
set(TEST_OPTIONS "${_PAT_OPTIONS}")
set(TEST_FILES "${_PAT_FILES}")
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/test.cmake.in"
"${CMAKE_CURRENT_BINARY_DIR}/tests/${_PAT_NAME}.cmake" @ONLY)
add_test(NAME "${_PAT_NAME}"
COMMAND "${CMAKE_COMMAND}"
"-DLIBPNG=$<TARGET_FILE:png>"
"-DTEST_COMMAND=$<TARGET_FILE:${_PAT_COMMAND}>"
-P "${CMAKE_CURRENT_BINARY_DIR}/tests/${_PAT_NAME}.cmake")
endfunction()
if(PNG_TESTS AND PNG_SHARED)
# Find test PNG files by globbing, but sort lists to ensure
# consistency between different filesystems.
file(GLOB PNGSUITE_PNGS "${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/*.png")
list(SORT PNGSUITE_PNGS)
file(GLOB TEST_PNGS "${CMAKE_CURRENT_SOURCE_DIR}/contrib/testpngs/*.png")
list(SORT TEST_PNGS)
set(PNGTEST_PNG "${CMAKE_CURRENT_SOURCE_DIR}/pngtest.png")
add_executable(pngtest ${pngtest_sources})
target_link_libraries(pngtest png)
png_add_test(NAME pngtest COMMAND pngtest FILES "${PNGTEST_PNG}")
add_executable(pngvalid ${pngvalid_sources})
target_link_libraries(pngvalid png)
png_add_test(NAME pngvalid-gamma-16-to-8
COMMAND pngvalid OPTIONS --gamma-16-to-8)
png_add_test(NAME pngvalid-gamma-alpha-mode
COMMAND pngvalid OPTIONS --gamma-alpha-mode)
png_add_test(NAME pngvalid-gamma-background
COMMAND pngvalid OPTIONS --gamma-background)
png_add_test(NAME pngvalid-gamma-expand16-alpha-mode
COMMAND pngvalid OPTIONS --gamma-alpha-mode --expand16)
png_add_test(NAME pngvalid-gamma-expand16-background
COMMAND pngvalid OPTIONS --gamma-background --expand16)
png_add_test(NAME pngvalid-gamma-expand16-transform
COMMAND pngvalid OPTIONS --gamma-transform --expand16)
png_add_test(NAME pngvalid-gamma-sbit
COMMAND pngvalid OPTIONS --gamma-sbit)
png_add_test(NAME pngvalid-gamma-threshold
COMMAND pngvalid OPTIONS --gamma-threshold)
png_add_test(NAME pngvalid-gamma-transform
COMMAND pngvalid OPTIONS --gamma-transform)
png_add_test(NAME pngvalid-progressive-interlace-standard
COMMAND pngvalid OPTIONS --standard --progressive-read --interlace)
png_add_test(NAME pngvalid-progressive-size
COMMAND pngvalid OPTIONS --size --progressive-read)
png_add_test(NAME pngvalid-progressive-standard
COMMAND pngvalid OPTIONS --standard --progressive-read)
png_add_test(NAME pngvalid-standard
COMMAND pngvalid OPTIONS --standard)
png_add_test(NAME pngvalid-transform
COMMAND pngvalid OPTIONS --transform)
add_executable(pngstest ${pngstest_sources})
target_link_libraries(pngstest png)
foreach(gamma_type 1.8 linear none sRGB)
foreach(alpha_type none alpha)
set(PNGSTEST_FILES)
foreach(test_png ${TEST_PNGS})
string(REGEX MATCH ".*-linear[-.].*" TEST_PNG_LINEAR "${test_png}")
string(REGEX MATCH ".*-sRGB[-.].*" TEST_PNG_SRGB "${test_png}")
string(REGEX MATCH ".*-1.8[-.].*" TEST_PNG_G18 "${test_png}")
string(REGEX MATCH ".*-alpha-.*" TEST_PNG_ALPHA "${test_png}")
set(TEST_PNG_VALID TRUE)
if(TEST_PNG_ALPHA)
if(NOT "${alpha_type}" STREQUAL "alpha")
set(TEST_PNG_VALID FALSE)
endif()
else()
if("${alpha_type}" STREQUAL "alpha")
set(TEST_PNG_VALID FALSE)
endif()
endif()
if(TEST_PNG_LINEAR)
if(NOT "${gamma_type}" STREQUAL "linear")
set(TEST_PNG_VALID FALSE)
endif()
elseif(TEST_PNG_SRGB)
if(NOT "${gamma_type}" STREQUAL "sRGB")
set(TEST_PNG_VALID FALSE)
endif()
elseif(TEST_PNG_G18)
if(NOT "${gamma_type}" STREQUAL "1.8")
set(TEST_PNG_VALID FALSE)
endif()
else()
if(NOT "${gamma_type}" STREQUAL "none")
set(TEST_PNG_VALID FALSE)
endif()
endif()
if(TEST_PNG_VALID)
list(APPEND PNGSTEST_FILES "${test_png}")
endif()
endforeach()
# Should already be sorted, but sort anyway to be certain.
list(SORT PNGSTEST_FILES)
png_add_test(NAME pngstest-${gamma_type}-${alpha_type}
COMMAND pngstest
OPTIONS --tmpfile "${gamma_type}-${alpha_type}-" --log
FILES ${PNGSTEST_FILES})
endforeach()
endforeach()
add_executable(pngunknown ${pngunknown_sources})
target_link_libraries(pngunknown png)
png_add_test(NAME pngunknown-discard COMMAND pngunknown OPTIONS --strict default=discard FILES "${PNGTEST_PNG}")
png_add_test(NAME pngunknown-IDAT COMMAND pngunknown OPTIONS --strict default=discard IDAT=save FILES "${PNGTEST_PNG}")
png_add_test(NAME pngunknown-if-safe COMMAND pngunknown OPTIONS --strict default=if-safe FILES "${PNGTEST_PNG}")
png_add_test(NAME pngunknown-sAPI COMMAND pngunknown OPTIONS --strict bKGD=save cHRM=save gAMA=save all=discard iCCP=save sBIT=save sRGB=save FILES "${PNGTEST_PNG}")
png_add_test(NAME pngunknown-save COMMAND pngunknown OPTIONS --strict default=save FILES "${PNGTEST_PNG}")
png_add_test(NAME pngunknown-sTER COMMAND pngunknown OPTIONS --strict sTER=if-safe FILES "${PNGTEST_PNG}")
png_add_test(NAME pngunknown-vpAg COMMAND pngunknown OPTIONS --strict vpAg=if-safe FILES "${PNGTEST_PNG}")
add_executable(pngimage ${pngimage_sources})
target_link_libraries(pngimage png)
png_add_test(NAME pngimage-quick COMMAND pngimage OPTIONS --list-combos --log FILES ${PNGSUITE_PNGS})
png_add_test(NAME pngimage-full COMMAND pngimage OPTIONS --exhaustive --list-combos --log FILES ${PNGSUITE_PNGS})
endif()
if(PNG_SHARED)
add_executable(pngfix ${pngfix_sources})
target_link_libraries(pngfix png)
set(PNG_BIN_TARGETS pngfix)
add_executable(png-fix-itxt ${png_fix_itxt_sources})
target_link_libraries(png-fix-itxt ${ZLIB_LIBRARY} ${M_LIBRARY})
list(APPEND PNG_BIN_TARGETS png-fix-itxt)
endif()
# Set a variable with CMake code which:
# Creates a symlink from src to dest (if possible) or alternatively
# copies if different.
include(CMakeParseArguments)
function(create_symlink DEST_FILE)
cmake_parse_arguments(S "" "FILE;TARGET" "" ${ARGN})
if(NOT S_TARGET AND NOT S_FILE)
message(FATAL_ERROR "create_symlink: Missing TARGET or FILE argument")
endif()
if(S_TARGET AND S_FILE)
message(FATAL_ERROR "create_symlink: Both source file ${S_FILE} and build target ${S_TARGET} arguments are present; can only have one.")
endif()
if(S_FILE)
# If we don't need to symlink something that's coming from a build target,
# we can go ahead and symlink/copy at configure time.
if(CMAKE_HOST_WIN32 AND NOT CYGWIN)
execute_process(
COMMAND "${CMAKE_COMMAND}" -E copy_if_different ${S_FILE} ${DEST_FILE}
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
else()
execute_process(
COMMAND ${CMAKE_COMMAND} -E create_symlink ${S_FILE} ${DEST_FILE}
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
endif()
endif()
if(S_TARGET)
# We need to use generator expressions, which can be a bit tricky, so for
# simplicity make the symlink a POST_BUILD step and use the TARGET
# signature of add_custom_command.
if(CMAKE_HOST_WIN32 AND NOT CYGWIN)
add_custom_command(TARGET ${S_TARGET} POST_BUILD
COMMAND "${CMAKE_COMMAND}" -E copy_if_different $<TARGET_LINKER_FILE_NAME:${S_TARGET}> $<TARGET_LINKER_FILE_DIR:${S_TARGET}>/${DEST_FILE})
else()
add_custom_command(TARGET ${S_TARGET} POST_BUILD
COMMAND "${CMAKE_COMMAND}" -E create_symlink $<TARGET_LINKER_FILE_NAME:${S_TARGET}> $<TARGET_LINKER_FILE_DIR:${S_TARGET}>/${DEST_FILE})
endif()
endif()
endfunction()
# Create source generation scripts.
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/genchk.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/scripts/genchk.cmake @ONLY)
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/genout.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/scripts/genout.cmake @ONLY)
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/gensrc.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/scripts/gensrc.cmake @ONLY)
# libpng is a library so default to 'lib'
if(NOT DEFINED CMAKE_INSTALL_LIBDIR)
set(CMAKE_INSTALL_LIBDIR lib)
endif()
# CREATE PKGCONFIG FILES
# We use the same files like ./configure, so we have to set its vars.
# Only do this on Windows for Cygwin - the files don't make much sense outside
# of a UNIX look-alike.
if(NOT WIN32 OR CYGWIN OR MINGW)
set(prefix ${CMAKE_INSTALL_PREFIX})
set(exec_prefix ${CMAKE_INSTALL_PREFIX})
set(libdir ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR})
set(includedir ${CMAKE_INSTALL_PREFIX}/include)
set(LIBS "-lz -lm")
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in
${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc @ONLY)
create_symlink(libpng.pc FILE ${PNGLIB_NAME}.pc)
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in
${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config @ONLY)
create_symlink(libpng-config FILE ${PNGLIB_NAME}-config)
endif()
# SET UP LINKS
if(PNG_SHARED)
set_target_properties(png PROPERTIES
# VERSION 16.${PNGLIB_RELEASE}.1.6.36.git
VERSION 16.${PNGLIB_RELEASE}.0
SOVERSION 16
CLEAN_DIRECT_OUTPUT 1)
endif()
# INSTALL
if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL)
install(TARGETS ${PNG_LIB_TARGETS}
EXPORT libpng
RUNTIME DESTINATION bin
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
FRAMEWORK DESTINATION ${CMAKE_INSTALL_LIBDIR})
if(PNG_SHARED)
# Create a symlink for libpng.dll.a => libpng16.dll.a on Cygwin
if(CYGWIN OR MINGW)
create_symlink(libpng${CMAKE_IMPORT_LIBRARY_SUFFIX} TARGET png)
install(FILES $<TARGET_LINKER_FILE_DIR:png>/libpng${CMAKE_IMPORT_LIBRARY_SUFFIX}
DESTINATION ${CMAKE_INSTALL_LIBDIR})
endif()
if(NOT WIN32)
create_symlink(libpng${CMAKE_SHARED_LIBRARY_SUFFIX} TARGET png)
install(FILES $<TARGET_LINKER_FILE_DIR:png>/libpng${CMAKE_SHARED_LIBRARY_SUFFIX}
DESTINATION ${CMAKE_INSTALL_LIBDIR})
endif()
endif()
if(PNG_STATIC)
if(NOT WIN32 OR CYGWIN OR MINGW)
create_symlink(libpng${CMAKE_STATIC_LIBRARY_SUFFIX} TARGET png_static)
install(FILES $<TARGET_LINKER_FILE_DIR:png_static>/libpng${CMAKE_STATIC_LIBRARY_SUFFIX}
DESTINATION ${CMAKE_INSTALL_LIBDIR})
endif()
endif()
endif()
if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL)
install(FILES ${libpng_public_hdrs} DESTINATION include)
install(FILES ${libpng_public_hdrs} DESTINATION include/${PNGLIB_NAME})
endif()
if(NOT SKIP_INSTALL_EXECUTABLES AND NOT SKIP_INSTALL_ALL)
if(NOT WIN32 OR CYGWIN OR MINGW)
install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config DESTINATION bin)
install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config DESTINATION bin)
endif()
endif()
if(NOT SKIP_INSTALL_PROGRAMS AND NOT SKIP_INSTALL_ALL)
install(TARGETS ${PNG_BIN_TARGETS}
RUNTIME DESTINATION bin)
endif()
if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL)
# Install man pages
if(NOT PNG_MAN_DIR)
set(PNG_MAN_DIR "share/man")
endif()
install(FILES libpng.3 libpngpf.3 DESTINATION ${PNG_MAN_DIR}/man3)
install(FILES png.5 DESTINATION ${PNG_MAN_DIR}/man5)
# Install pkg-config files
if(NOT CMAKE_HOST_WIN32 OR CYGWIN OR MINGW)
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc
DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config
DESTINATION bin)
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc
DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
DESTINATION bin)
endif()
endif()
# Create an export file that CMake users can include() to import our targets.
if(NOT SKIP_INSTALL_EXPORT AND NOT SKIP_INSTALL_ALL)
install(EXPORT libpng DESTINATION lib/libpng FILE lib${PNG_LIB_NAME}.cmake)
endif()
# what's with libpng-manual.txt and all the extra files?
# UNINSTALL
# do we need this?
# DIST
# do we need this?
# to create msvc import lib for mingw compiled shared lib
# pexports libpng.dll > libpng.def
# lib /def:libpng.def /machine:x86
Reference in New Issue View Git Blame Copy Permalink