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Diffstat (limited to 'src/png/libpng/CMakeLists.txt')
| -rw-r--r-- | src/png/libpng/CMakeLists.txt | 937 |
1 files changed, 937 insertions, 0 deletions
diff --git a/src/png/libpng/CMakeLists.txt b/src/png/libpng/CMakeLists.txt new file mode 100644 index 000000000..7697110c7 --- /dev/null +++ b/src/png/libpng/CMakeLists.txt @@ -0,0 +1,937 @@ +# CMakeLists.txt + +# Copyright (C) 2007,2009-2017 Glenn Randers-Pehrson +# Written by Christian Ehrlicher, 2007 +# Revised by Roger Lowman, 2009-2010 +# Revised by Clifford Yapp, 2011-2012 +# Revised by Roger Leigh, 2016 +# Revised by Andreas Franek, 2016 + +# 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 3.0.2) +cmake_policy(VERSION 3.0.2) + +# Set MacOSX @rpath usage globally. +if (POLICY CMP0020) + cmake_policy(SET CMP0020 NEW) +endif(POLICY CMP0020) +if (POLICY CMP0042) + cmake_policy(SET CMP0042 NEW) +endif(POLICY CMP0042) +# Use new variable expansion policy. +if (POLICY CMP0053) + cmake_policy(SET CMP0053 NEW) +endif(POLICY CMP0053) +if (POLICY CMP0054) + cmake_policy(SET CMP0054 NEW) +endif(POLICY CMP0054) + +set(CMAKE_CONFIGURATION_TYPES "Release;Debug;MinSizeRel;RelWithDebInfo") + +project(libpng ASM C) + +set(PNGLIB_MAJOR 1) +set(PNGLIB_MINOR 6) +set(PNGLIB_RELEASE 34) +set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR}) +set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE}) + +# needed packages + +#Allow users to specify location of Zlib, +# Useful if zlib is being built alongside this as a sub-project + +set(PNG_BUILD_ZLIB ${CMAKE_CURRENT_SOURCE_DIR}/zlib) + +if(NOT WIN32) + find_library(M_LIBRARY + NAMES m + PATHS /usr/lib /usr/local/lib + ) + if(NOT M_LIBRARY) + message(STATUS "math lib 'libm' not found; floating point support disabled") + endif() +else() + # not needed on windows + set(M_LIBRARY "") +endif() + +# COMMAND LINE OPTIONS +option(PNG_SHARED "Build shared lib" OFF) +option(PNG_STATIC "Build static lib" ON) +option(PNG_TESTS "Build libpng tests" OFF) + +# 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(PNGARG "Disable ANSI-C prototypes" 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 ${PNG_ARM_NEON} STREQUAL "no") + set(libpng_arm_sources + arm/arm_init.c + arm/filter_neon.S + arm/filter_neon_intrinsics.c) + + if(${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 ${PNG_POWERPC_VSX} STREQUAL "no") + set(libpng_powerpc_sources + powerpc/powerpc_init.c + powerpc/filter_vsx_intrinsics.c) + if(${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 ${PNG_INTEL_SSE} STREQUAL "no") + set(libpng_intel_sources + intel/intel_init.c + intel/filter_sse2_intrinsics.c) + if(${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 ${PNG_MIPS_MSA} STREQUAL "no") + set(libpng_mips_sources + mips/mips_init.c + mips/filter_msa_intrinsics.c) + if(${PNG_MIPS_MSA} STREQUAL "on") + add_definitions(-DPNG_MIPS_MSA_OPT=2) + endif() + else() + add_definitions(-DPNG_MIPS_MSA_OPT=0) + endif() +endif() +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}" ${ARGN}) + if (NOT _GC_INPUT) + message(FATAL_ERROR "Invalid arguments. generate_out requires input.") + endif() + if (NOT _GC_OUTPUT) + message(FATAL_ERROR "Invalid arguments. generate_out requires output.") + endif() + + add_custom_command(OUTPUT "${_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}" ${ARGN}) + if (NOT _GO_INPUT) + message(FATAL_ERROR "Invalid arguments. generate_out requires input.") + endif() + if (NOT _GO_OUTPUT) + message(FATAL_ERROR "Invalid arguments. generate_out requires output.") + endif() + + add_custom_command(OUTPUT "${_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}" ${ARGN}) + if (NOT _GSO_OUTPUT) + message(FATAL_ERROR "Invalid arguments. generate_source requires output.") + endif() + + add_custom_command(OUTPUT "${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 dependend 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} + ${libpng_powerpc_sources} +) +set(pngtest_sources + pngtest.c +) +set(pngvalid_sources + contrib/libtests/pngvalid.c +) +set(pngstest_sources + contrib/libtests/pngstest.c +) +set(pngunknown_sources + contrib/libtests/pngunknown.c +) +set(pngimage_sources + contrib/libtests/pngimage.c +) +set(pngfix_sources + contrib/tools/pngfix.c +) +set(png_fix_itxt_sources + contrib/tools/png-fix-itxt.c +) + +if(MSVC) + add_definitions(-D_CRT_SECURE_NO_DEPRECATE) +endif(MSVC) + +if(PNG_DEBUG) + add_definitions(-DPNG_DEBUG) +endif() + +# NOW BUILD OUR TARGET +include_directories(${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}" ${ARGN}) + + if (NOT _PAT_NAME) + message(FATAL_ERROR "Invalid arguments. png_add_test requires name.") + endif() + if (NOT _PAT_COMMAND) + message(FATAL_ERROR "Invalid arguments. png_add_test requires command.") + endif() + + set(TEST_OPTIONS "${_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) + if(CMAKE_MAJOR_VERSION GREATER 2) # have generator expressions + add_test(NAME "${_PAT_NAME}" + COMMAND "${CMAKE_COMMAND}" + "-DLIBPNG=$<TARGET_FILE:png>" + "-DTEST_COMMAND=$<TARGET_FILE:${_PAT_COMMAND}>" + -P "${CMAKE_CURRENT_BINARY_DIR}/tests/${_PAT_NAME}.cmake") + else() # old 2.x add_test; limited and won't work well on Windows + # Note LIBPNG is a dummy value as there are no generator expressions + add_test("${_PAT_NAME}" "${CMAKE_COMMAND}" + "-DLIBPNG=${CMAKE_CURRENT_BINARY_DIR}/libpng.so" + "-DTEST_COMMAND=./${_PAT_COMMAND}" + -P "${CMAKE_CURRENT_BINARY_DIR}/tests/${_PAT_NAME}.cmake") + endif() +endfunction() + +if(PNG_TESTS AND PNG_SHARED) + # Find test PNG files by globbing, but sort lists to ensure + # consistency between different filesystems. + file(GLOB PNGSUITE_PNGS "${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 "Specify either a TARGET or a FILE for CREATE_SYMLINK to link to.") + endif(NOT S_TARGET AND NOT S_FILE) + + if(S_TARGET AND S_FILE) + message(FATAL_ERROR "CREATE_SYMLINK called with both source file ${S_FILE} and build target ${S_TARGET} arguments - can only handle 1 type per call.") + endif(S_TARGET AND S_FILE) + + if(S_FILE) + # If we don't need to symlink something that's coming from a build target, + # we can go ahead and symlink/copy at configure time. + + if(CMAKE_HOST_WIN32 AND NOT CYGWIN AND NOT MSYS) + execute_process( + COMMAND "${CMAKE_COMMAND}" -E copy_if_different ${S_FILE} ${DEST_FILE} + WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}" + ) + else(CMAKE_HOST_WIN32 AND NOT CYGWIN AND NOT MSYS) + execute_process( + COMMAND ${CMAKE_COMMAND} -E create_symlink ${S_FILE} ${DEST_FILE} + WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}" + ) + endif(CMAKE_HOST_WIN32 AND NOT CYGWIN AND NOT MSYS) + endif(S_FILE) + + 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 AND NOT MSYS) + 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(CMAKE_HOST_WIN32 AND NOT CYGWIN AND NOT MSYS) + 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}>/${DEST_FILE} + ) + endif(CMAKE_HOST_WIN32 AND NOT CYGWIN AND NOT MSYS) + + endif(S_TARGET) + +endfunction() + +# Create source generation scripts. +configure_file(${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(NOT DEFINED CMAKE_INSTALL_LIBDIR) + +# 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 +# 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 ${PNGLIB_NAME}-config) +endif(NOT WIN32 OR CYGWIN OR MINGW) + +# SET UP LINKS +if(PNG_SHARED) + set_target_properties(png PROPERTIES +# VERSION 16.${PNGLIB_RELEASE}.1.6.34 + VERSION 16.${PNGLIB_RELEASE}.0 + SOVERSION 16 + CLEAN_DIRECT_OUTPUT 1) +endif() + +# If CMake > 2.4.x, we set a variable used below to export +# targets to an export file. +# TODO: Use VERSION_GREATER after our cmake_minimum_required >= 2.6.2 +if(CMAKE_MAJOR_VERSION GREATER 1 AND CMAKE_MINOR_VERSION GREATER 4) + set(PNG_EXPORT_RULE EXPORT libpng) +elseif(CMAKE_MAJOR_VERSION GREATER 2) # future proof + set(PNG_EXPORT_RULE EXPORT libpng) +endif() + +# INSTALL +if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL ) + install(TARGETS ${PNG_LIB_TARGETS} + ${PNG_EXPORT_RULE} + 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 ${CMAKE_INSTALL_LIBDIR}) + endif(CYGWIN OR MINGW) + + if(NOT WIN32) + CREATE_SYMLINK(libpng${CMAKE_SHARED_LIBRARY_SUFFIX} TARGET png) + install(FILES $<TARGET_LINKER_FILE_DIR:png>/libpng${CMAKE_SHARED_LIBRARY_SUFFIX} DESTINATION ${CMAKE_INSTALL_LIBDIR}) + endif(NOT WIN32) + endif(PNG_SHARED) + + if(PNG_STATIC) + if(NOT WIN32 OR CYGWIN OR MINGW) + CREATE_SYMLINK( libpng${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(NOT WIN32 OR CYGWIN OR MINGW) + 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(NOT WIN32 OR CYGWIN OR MINGW) +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(NOT CMAKE_HOST_WIN32 OR CYGWIN OR MINGW) +endif() + +# On versions of CMake that support it, create an export file CMake +# users can include() to import our targets +if(PNG_EXPORT_RULE AND 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 |