1diff --git a/CMakeLists.txt b/CMakeLists.txt 2index 6451fcf1b..639554ad8 100644 3--- a/CMakeLists.txt 4+++ b/CMakeLists.txt 5@@ -1,931 +1,26 @@ 6-# CMakeLists.txt 7- 8-# Copyright (C) 2018 Cosmin Truta 9-# Copyright (C) 2007,2009-2018 Glenn Randers-Pehrson 10-# Written by Christian Ehrlicher, 2007 11-# Revised by Roger Lowman, 2009-2010 12-# Revised by Clifford Yapp, 2011-2012,2017 13-# Revised by Roger Leigh, 2016 14-# Revised by Andreas Franek, 2016 15-# Revised by Sam Serrels, 2017 16-# Revised by Vadim Barkov, 2017 17-# Revised by Vicky Pfau, 2018 18-# Revised by Cameron Cawley, 2018 19-# Revised by Cosmin Truta, 2018 20-# Revised by Kyle Bentley, 2018 21- 22-# This code is released under the libpng license. 23-# For conditions of distribution and use, see the disclaimer 24-# and license in png.h 25- 26-cmake_minimum_required(VERSION 3.1) 27-cmake_policy(VERSION 3.1) 28- 29-project(libpng C ASM) 30-enable_testing() 31- 32-set(PNGLIB_MAJOR 1) 33-set(PNGLIB_MINOR 6) 34-set(PNGLIB_RELEASE 37) 35-set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR}) 36-set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE}) 37- 38-include(GNUInstallDirs) 39- 40-# needed packages 41- 42-# Allow users to specify location of Zlib. 43-# Useful if zlib is being built alongside this as a sub-project. 44-option(PNG_BUILD_ZLIB "Custom zlib Location, else find_package is used" OFF) 45- 46-if(NOT PNG_BUILD_ZLIB) 47- find_package(ZLIB REQUIRED) 48- include_directories(${ZLIB_INCLUDE_DIR}) 49-endif() 50- 51-if(UNIX AND NOT APPLE AND NOT BEOS AND NOT HAIKU) 52- find_library(M_LIBRARY m) 53-else() 54- # libm is not needed and/or not available 55- set(M_LIBRARY "") 56-endif() 57- 58-# COMMAND LINE OPTIONS 59-option(PNG_SHARED "Build shared lib" ON) 60-option(PNG_STATIC "Build static lib" ON) 61-option(PNG_TESTS "Build libpng tests" ON) 62- 63-# Many more configuration options could be added here 64-option(PNG_FRAMEWORK "Build OS X framework" OFF) 65-option(PNG_DEBUG "Build with debug output" OFF) 66-option(PNG_HARDWARE_OPTIMIZATIONS "Enable hardware optimizations" ON) 67- 68-set(PNG_PREFIX "" CACHE STRING "Prefix to add to the API function names") 69-set(DFA_XTRA "" CACHE FILEPATH "File containing extra configuration settings") 70- 71-if(PNG_HARDWARE_OPTIMIZATIONS) 72- 73-# set definitions and sources for arm 74-if(CMAKE_SYSTEM_PROCESSOR MATCHES "^arm" OR 75- CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch64") 76- set(PNG_ARM_NEON_POSSIBLE_VALUES check on off) 77- set(PNG_ARM_NEON "check" CACHE STRING "Enable ARM NEON optimizations: 78- check: (default) use internal checking code; 79- off: disable the optimizations; 80- on: turn on unconditionally.") 81- set_property(CACHE PNG_ARM_NEON PROPERTY STRINGS 82- ${PNG_ARM_NEON_POSSIBLE_VALUES}) 83- list(FIND PNG_ARM_NEON_POSSIBLE_VALUES ${PNG_ARM_NEON} index) 84- if(index EQUAL -1) 85- message(FATAL_ERROR 86- "PNG_ARM_NEON must be one of [${PNG_ARM_NEON_POSSIBLE_VALUES}]") 87- elseif(NOT ${PNG_ARM_NEON} STREQUAL "off") 88- set(libpng_arm_sources 89- arm/arm_init.c 90- arm/filter_neon.S 91- arm/filter_neon_intrinsics.c 92- arm/palette_neon_intrinsics.c) 93- 94- if(${PNG_ARM_NEON} STREQUAL "on") 95- add_definitions(-DPNG_ARM_NEON_OPT=2) 96- elseif(${PNG_ARM_NEON} STREQUAL "check") 97- add_definitions(-DPNG_ARM_NEON_CHECK_SUPPORTED) 98- endif() 99- else() 100- add_definitions(-DPNG_ARM_NEON_OPT=0) 101- endif() 102-endif() 103- 104-# set definitions and sources for powerpc 105-if(CMAKE_SYSTEM_PROCESSOR MATCHES "^powerpc*" OR 106- CMAKE_SYSTEM_PROCESSOR MATCHES "^ppc64*") 107- set(PNG_POWERPC_VSX_POSSIBLE_VALUES on off) 108- set(PNG_POWERPC_VSX "on" CACHE STRING "Enable POWERPC VSX optimizations: 109- off: disable the optimizations.") 110- set_property(CACHE PNG_POWERPC_VSX PROPERTY STRINGS 111- ${PNG_POWERPC_VSX_POSSIBLE_VALUES}) 112- list(FIND PNG_POWERPC_VSX_POSSIBLE_VALUES ${PNG_POWERPC_VSX} index) 113- if(index EQUAL -1) 114- message(FATAL_ERROR 115- "PNG_POWERPC_VSX must be one of [${PNG_POWERPC_VSX_POSSIBLE_VALUES}]") 116- elseif(NOT ${PNG_POWERPC_VSX} STREQUAL "off") 117- set(libpng_powerpc_sources 118- powerpc/powerpc_init.c 119- powerpc/filter_vsx_intrinsics.c) 120- if(${PNG_POWERPC_VSX} STREQUAL "on") 121- add_definitions(-DPNG_POWERPC_VSX_OPT=2) 122- endif() 123- else() 124- add_definitions(-DPNG_POWERPC_VSX_OPT=0) 125- endif() 126-endif() 127- 128-# set definitions and sources for intel 129-if(CMAKE_SYSTEM_PROCESSOR MATCHES "^i?86" OR 130- CMAKE_SYSTEM_PROCESSOR MATCHES "^x86_64*") 131- set(PNG_INTEL_SSE_POSSIBLE_VALUES on off) 132- set(PNG_INTEL_SSE "on" CACHE STRING "Enable INTEL_SSE optimizations: 133- off: disable the optimizations") 134- set_property(CACHE PNG_INTEL_SSE PROPERTY STRINGS 135- ${PNG_INTEL_SSE_POSSIBLE_VALUES}) 136- list(FIND PNG_INTEL_SSE_POSSIBLE_VALUES ${PNG_INTEL_SSE} index) 137- if(index EQUAL -1) 138- message(FATAL_ERROR 139- "PNG_INTEL_SSE must be one of [${PNG_INTEL_SSE_POSSIBLE_VALUES}]") 140- elseif(NOT ${PNG_INTEL_SSE} STREQUAL "off") 141- set(libpng_intel_sources 142- intel/intel_init.c 143- intel/filter_sse2_intrinsics.c) 144- if(${PNG_INTEL_SSE} STREQUAL "on") 145- add_definitions(-DPNG_INTEL_SSE_OPT=1) 146- endif() 147- else() 148- add_definitions(-DPNG_INTEL_SSE_OPT=0) 149- endif() 150-endif() 151- 152-# set definitions and sources for MIPS 153-if(CMAKE_SYSTEM_PROCESSOR MATCHES "mipsel*" OR 154- CMAKE_SYSTEM_PROCESSOR MATCHES "mips64el*") 155- set(PNG_MIPS_MSA_POSSIBLE_VALUES on off) 156- set(PNG_MIPS_MSA "on" CACHE STRING "Enable MIPS_MSA optimizations: 157- off: disable the optimizations") 158- set_property(CACHE PNG_MIPS_MSA PROPERTY STRINGS 159- ${PNG_MIPS_MSA_POSSIBLE_VALUES}) 160- list(FIND PNG_MIPS_MSA_POSSIBLE_VALUES ${PNG_MIPS_MSA} index) 161- if(index EQUAL -1) 162- message(FATAL_ERROR 163- "PNG_MIPS_MSA must be one of [${PNG_MIPS_MSA_POSSIBLE_VALUES}]") 164- elseif(NOT ${PNG_MIPS_MSA} STREQUAL "off") 165- set(libpng_mips_sources 166- mips/mips_init.c 167- mips/filter_msa_intrinsics.c) 168- if(${PNG_MIPS_MSA} STREQUAL "on") 169- add_definitions(-DPNG_MIPS_MSA_OPT=2) 170- endif() 171- else() 172- add_definitions(-DPNG_MIPS_MSA_OPT=0) 173- endif() 174-endif() 175- 176-else(PNG_HARDWARE_OPTIMIZATIONS) 177- 178-# set definitions and sources for arm 179-if(CMAKE_SYSTEM_PROCESSOR MATCHES "^arm" OR 180- CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch64") 181- add_definitions(-DPNG_ARM_NEON_OPT=0) 182-endif() 183- 184-# set definitions and sources for powerpc 185-if(CMAKE_SYSTEM_PROCESSOR MATCHES "^powerpc*" OR 186- CMAKE_SYSTEM_PROCESSOR MATCHES "^ppc64*") 187- add_definitions(-DPNG_POWERPC_VSX_OPT=0) 188-endif() 189- 190-# set definitions and sources for intel 191-if(CMAKE_SYSTEM_PROCESSOR MATCHES "^i?86" OR 192- CMAKE_SYSTEM_PROCESSOR MATCHES "^x86_64*") 193- add_definitions(-DPNG_INTEL_SSE_OPT=0) 194-endif() 195- 196-# set definitions and sources for MIPS 197-if(CMAKE_SYSTEM_PROCESSOR MATCHES "mipsel*" OR 198- CMAKE_SYSTEM_PROCESSOR MATCHES "mips64el*") 199- add_definitions(-DPNG_MIPS_MSA_OPT=0) 200-endif() 201- 202-endif(PNG_HARDWARE_OPTIMIZATIONS) 203- 204-# SET LIBNAME 205-set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR}) 206- 207-# to distinguish between debug and release lib 208-set(CMAKE_DEBUG_POSTFIX "d") 209- 210-include(CheckCSourceCompiles) 211-option(ld-version-script "Enable linker version script" ON) 212-if(ld-version-script AND NOT APPLE) 213- # Check if LD supports linker scripts. 214- file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/conftest.map" "VERS_1 { 215- global: sym; 216- local: *; 217-}; 218- 219-VERS_2 { 220- global: sym2; 221- main; 222-} VERS_1; 223-") 224- set(CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS}) 225- set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/conftest.map'") 226- check_c_source_compiles("void sym(void) {} 227-void sym2(void) {} 228-int main(void) {return 0;} 229-" HAVE_LD_VERSION_SCRIPT) 230- if(NOT HAVE_LD_VERSION_SCRIPT) 231- set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE} "-Wl,-M -Wl,${CMAKE_CURRENT_BINARY_DIR}/conftest.map") 232- check_c_source_compiles("void sym(void) {} 233-void sym2(void) {} 234-int main(void) {return 0;} 235-" HAVE_SOLARIS_LD_VERSION_SCRIPT) 236- endif() 237- set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE}) 238- file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/conftest.map") 239-endif() 240- 241-# Find symbol prefix. Likely obsolete and unnecessary with recent 242-# toolchains (it's not done in many other projects). 243-function(symbol_prefix) 244- set(SYMBOL_PREFIX) 245- 246- execute_process(COMMAND "${CMAKE_C_COMPILER}" "-E" "-" 247- INPUT_FILE /dev/null 248- OUTPUT_VARIABLE OUT 249- RESULT_VARIABLE STATUS) 250- 251- if(CPP_FAIL) 252- message(WARNING "Failed to run the C preprocessor") 253- endif() 254- 255- string(REPLACE "\n" ";" OUT "${OUT}") 256- foreach(line ${OUT}) 257- string(REGEX MATCH "^PREFIX=" found_match "${line}") 258- if(found_match) 259- string(REGEX REPLACE "^PREFIX=(.*\)" "\\1" prefix "${line}") 260- string(REGEX MATCH "__USER_LABEL_PREFIX__" found_match "${prefix}") 261- if(found_match) 262- string(REGEX REPLACE "(.*)__USER_LABEL_PREFIX__(.*)" "\\1\\2" prefix "${prefix}") 263- endif() 264- set(SYMBOL_PREFIX "${prefix}") 265- endif() 266- endforeach() 267- 268- message(STATUS "Symbol prefix: ${SYMBOL_PREFIX}") 269- set(SYMBOL_PREFIX "${SYMBOL_PREFIX}" PARENT_SCOPE) 270-endfunction() 271- 272-if(UNIX) 273- symbol_prefix() 274-endif() 275- 276-find_program(AWK NAMES gawk awk) 277- 278-include_directories(${CMAKE_CURRENT_BINARY_DIR}) 279- 280-if(NOT AWK OR ANDROID) 281- # No awk available to generate sources; use pre-built pnglibconf.h 282- configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt 283- ${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h) 284- add_custom_target(genfiles) # Dummy 285-else() 286- include(CMakeParseArguments) 287- # Generate .chk from .out with awk 288- # generate_chk(INPUT inputfile OUTPUT outputfile [DEPENDS dep1 [dep2...]]) 289- function(generate_chk) 290- set(options) 291- set(oneValueArgs INPUT OUTPUT) 292- set(multiValueArgs DEPENDS) 293- cmake_parse_arguments(_GC "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN}) 294- if(NOT _GC_INPUT) 295- message(FATAL_ERROR "generate_chk: Missing INPUT argument") 296- endif() 297- if(NOT _GC_OUTPUT) 298- message(FATAL_ERROR "generate_chk: Missing OUTPUT argument") 299- endif() 300- 301- add_custom_command(OUTPUT "${_GC_OUTPUT}" 302- COMMAND "${CMAKE_COMMAND}" 303- "-DINPUT=${_GC_INPUT}" 304- "-DOUTPUT=${_GC_OUTPUT}" 305- -P "${CMAKE_CURRENT_BINARY_DIR}/scripts/genchk.cmake" 306- DEPENDS "${_GC_INPUT}" ${_GC_DEPENDS} 307- WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}") 308- endfunction() 309- 310- # Generate .out from .c with awk 311- # generate_out(INPUT inputfile OUTPUT outputfile [DEPENDS dep1 [dep2...]]) 312- function(generate_out) 313- set(options) 314- set(oneValueArgs INPUT OUTPUT) 315- set(multiValueArgs DEPENDS) 316- cmake_parse_arguments(_GO "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN}) 317- if(NOT _GO_INPUT) 318- message(FATAL_ERROR "generate_out: Missing INPUT argument") 319- endif() 320- if(NOT _GO_OUTPUT) 321- message(FATAL_ERROR "generate_out: Missing OUTPUT argument") 322- endif() 323- 324- add_custom_command(OUTPUT "${_GO_OUTPUT}" 325- COMMAND "${CMAKE_COMMAND}" 326- "-DINPUT=${_GO_INPUT}" 327- "-DOUTPUT=${_GO_OUTPUT}" 328- -P "${CMAKE_CURRENT_BINARY_DIR}/scripts/genout.cmake" 329- DEPENDS "${_GO_INPUT}" ${_GO_DEPENDS} 330- WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}") 331- endfunction() 332- 333- # Generate specific source file with awk 334- # generate_source(OUTPUT outputfile [DEPENDS dep1 [dep2...]]) 335- function(generate_source) 336- set(options) 337- set(oneValueArgs OUTPUT) 338- set(multiValueArgs DEPENDS) 339- cmake_parse_arguments(_GSO "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN}) 340- if(NOT _GSO_OUTPUT) 341- message(FATAL_ERROR "generate_source: Missing OUTPUT argument") 342- endif() 343- 344- add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${_GSO_OUTPUT}" 345- COMMAND "${CMAKE_COMMAND}" 346- "-DOUTPUT=${_GSO_OUTPUT}" 347- -P "${CMAKE_CURRENT_BINARY_DIR}/scripts/gensrc.cmake" 348- DEPENDS ${_GSO_DEPENDS} 349- WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}") 350- endfunction() 351- 352- # Copy file 353- function(generate_copy source destination) 354- add_custom_command(OUTPUT "${destination}" 355- COMMAND "${CMAKE_COMMAND}" -E remove "${destination}" 356- COMMAND "${CMAKE_COMMAND}" -E copy "${source}" 357- "${destination}" 358- DEPENDS "${source}") 359- endfunction() 360- 361- # Generate scripts/pnglibconf.h 362- generate_source(OUTPUT "scripts/pnglibconf.c" 363- DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.dfa" 364- "${CMAKE_CURRENT_SOURCE_DIR}/scripts/options.awk" 365- "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h") 366- 367- # Generate pnglibconf.c 368- generate_source(OUTPUT "pnglibconf.c" 369- DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.dfa" 370- "${CMAKE_CURRENT_SOURCE_DIR}/scripts/options.awk" 371- "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h") 372- 373- if(PNG_PREFIX) 374- set(PNGLIBCONF_H_EXTRA_DEPENDS 375- "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out" 376- "${CMAKE_CURRENT_SOURCE_DIR}/scripts/macro.lst") 377- set(PNGPREFIX_H_EXTRA_DEPENDS 378- "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out") 379- endif() 380- 381- generate_out(INPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c" 382- OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out") 383- 384- # Generate pnglibconf.h 385- generate_source(OUTPUT "pnglibconf.h" 386- DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out" 387- ${PNGLIBCONF_H_EXTRA_DEPENDS}) 388- 389- generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/intprefix.c" 390- OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out" 391- DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h") 392- 393- generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/prefix.c" 394- OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out" 395- DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h" 396- "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h" 397- "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out") 398- 399- # Generate pngprefix.h 400- generate_source(OUTPUT "pngprefix.h" 401- DEPENDS ${PNGPREFIX_H_EXTRA_DEPENDS}) 402- 403- generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/sym.c" 404- OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out" 405- DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h") 406- 407- generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/symbols.c" 408- OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out" 409- DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h" 410- "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h" 411- "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt") 412- 413- generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/vers.c" 414- OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out" 415- DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h" 416- "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h" 417- "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h") 418- 419- generate_chk(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out" 420- OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk" 421- DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/checksym.awk" 422- "${CMAKE_CURRENT_SOURCE_DIR}/scripts/symbols.def") 423- 424- add_custom_target(symbol-check DEPENDS 425- "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk") 426- 427- generate_copy("${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out" 428- "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym") 429- generate_copy("${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out" 430- "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers") 431- 432- add_custom_target(genvers DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers") 433- add_custom_target(gensym DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym") 434- 435- add_custom_target("genprebuilt" 436- COMMAND "${CMAKE_COMMAND}" 437- "-DOUTPUT=scripts/pnglibconf.h.prebuilt" 438- -P "${CMAKE_CURRENT_BINARY_DIR}/scripts/gensrc.cmake" 439- WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}") 440- 441- # A single target handles generation of all generated files. If 442- # they are depended upon separately by multiple targets, this 443- # confuses parallel make (it would require a separate top-level 444- # target for each file to track the dependencies properly). 445- add_custom_target(genfiles DEPENDS 446- "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym" 447- "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers" 448- "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c" 449- "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" 450- "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out" 451- "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h" 452- "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out" 453- "${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c" 454- "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out" 455- "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out" 456- "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk" 457- "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out" 458- "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out") 459-endif(NOT AWK OR ANDROID) 460- 461-# OUR SOURCES 462-set(libpng_public_hdrs 463- png.h 464- pngconf.h 465- "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" 466-) 467-set(libpng_private_hdrs 468- pngpriv.h 469- pngdebug.h 470- pnginfo.h 471- pngstruct.h 472-) 473-if(AWK AND NOT ANDROID) 474- list(APPEND libpng_private_hdrs "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h") 475-endif() 476-set(libpng_sources 477- ${libpng_public_hdrs} 478- ${libpng_private_hdrs} 479- png.c 480- pngerror.c 481- pngget.c 482- pngmem.c 483- pngpread.c 484- pngread.c 485- pngrio.c 486- pngrtran.c 487- pngrutil.c 488- pngset.c 489- pngtrans.c 490- pngwio.c 491- pngwrite.c 492- pngwtran.c 493- pngwutil.c 494- ${libpng_arm_sources} 495- ${libpng_intel_sources} 496- ${libpng_mips_sources} 497- ${libpng_powerpc_sources} 498-) 499-set(pngtest_sources 500- pngtest.c 501-) 502-set(pngvalid_sources 503- contrib/libtests/pngvalid.c 504-) 505-set(pngstest_sources 506- contrib/libtests/pngstest.c 507-) 508-set(pngunknown_sources 509- contrib/libtests/pngunknown.c 510-) 511-set(pngimage_sources 512- contrib/libtests/pngimage.c 513-) 514-set(pngfix_sources 515- contrib/tools/pngfix.c 516-) 517-set(png_fix_itxt_sources 518- contrib/tools/png-fix-itxt.c 519-) 520- 521-if(MSVC) 522- add_definitions(-D_CRT_SECURE_NO_DEPRECATE) 523-endif() 524- 525-if(PNG_DEBUG) 526- add_definitions(-DPNG_DEBUG) 527-endif() 528- 529-# NOW BUILD OUR TARGET 530-include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${ZLIB_INCLUDE_DIR}) 531- 532-unset(PNG_LIB_TARGETS) 533- 534-if(PNG_SHARED) 535- add_library(png SHARED ${libpng_sources}) 536- set(PNG_LIB_TARGETS png) 537- set_target_properties(png PROPERTIES OUTPUT_NAME ${PNG_LIB_NAME}) 538- add_dependencies(png genfiles) 539- if(MSVC) 540- # msvc does not append 'lib' - do it here to have consistent name 541- set_target_properties(png PROPERTIES PREFIX "lib") 542- set_target_properties(png PROPERTIES IMPORT_PREFIX "lib") 543- endif() 544- target_link_libraries(png ${ZLIB_LIBRARY} ${M_LIBRARY}) 545- 546- if(UNIX AND AWK) 547- if(HAVE_LD_VERSION_SCRIPT) 548- set_target_properties(png PROPERTIES LINK_FLAGS 549- "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'") 550- elseif(HAVE_SOLARIS_LD_VERSION_SCRIPT) 551- set_target_properties(png PROPERTIES LINK_FLAGS 552- "-Wl,-M -Wl,'${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'") 553- endif() 554- endif() 555-endif() 556- 557-if(PNG_STATIC) 558- # does not work without changing name 559- set(PNG_LIB_NAME_STATIC png_static) 560- add_library(png_static STATIC ${libpng_sources}) 561- add_dependencies(png_static genfiles) 562- # MSVC doesn't use a different file extension for shared vs. static 563- # libs. We are able to change OUTPUT_NAME to remove the _static 564- # for all other platforms. 565- if(NOT MSVC) 566- set_target_properties(png_static PROPERTIES 567- OUTPUT_NAME "${PNG_LIB_NAME}" 568- CLEAN_DIRECT_OUTPUT 1) 569- else() 570- set_target_properties(png_static PROPERTIES 571- OUTPUT_NAME "${PNG_LIB_NAME}_static" 572- CLEAN_DIRECT_OUTPUT 1) 573- endif() 574- list(APPEND PNG_LIB_TARGETS png_static) 575- if(MSVC) 576- # msvc does not append 'lib' - do it here to have consistent name 577- set_target_properties(png_static PROPERTIES PREFIX "lib") 578- endif() 579- target_link_libraries(png_static ${ZLIB_LIBRARY} ${M_LIBRARY}) 580-endif() 581- 582-if(PNG_FRAMEWORK) 583- set(PNG_LIB_NAME_FRAMEWORK png_framework) 584- add_library(png_framework SHARED ${libpng_sources}) 585- add_dependencies(png_framework genfiles) 586- list(APPEND PNG_LIB_TARGETS png_framework) 587- set_target_properties(png_framework PROPERTIES 588- FRAMEWORK TRUE 589- FRAMEWORK_VERSION ${PNGLIB_VERSION} 590- MACOSX_FRAMEWORK_SHORT_VERSION_STRING ${PNGLIB_MAJOR}.${PNGLIB_MINOR} 591- MACOSX_FRAMEWORK_BUNDLE_VERSION ${PNGLIB_VERSION} 592- MACOSX_FRAMEWORK_IDENTIFIER org.libpng.libpng 593- XCODE_ATTRIBUTE_INSTALL_PATH "@rpath" 594- PUBLIC_HEADER "${libpng_public_hdrs}" 595- OUTPUT_NAME png) 596- target_link_libraries(png_framework ${ZLIB_LIBRARY} ${M_LIBRARY}) 597-endif() 598- 599-if(NOT PNG_LIB_TARGETS) 600- message(SEND_ERROR 601- "No library variant selected to build. " 602- "Please enable at least one of the following options: " 603- "PNG_STATIC, PNG_SHARED, PNG_FRAMEWORK") 604-endif() 605- 606-if(PNG_SHARED AND WIN32) 607- set_target_properties(png PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL) 608-endif() 609- 610-function(png_add_test) 611- set(options) 612- set(oneValueArgs NAME COMMAND) 613- set(multiValueArgs OPTIONS FILES) 614- cmake_parse_arguments(_PAT "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN}) 615- 616- if(NOT _PAT_NAME) 617- message(FATAL_ERROR "png_add_test: Missing NAME argument") 618- endif() 619- if(NOT _PAT_COMMAND) 620- message(FATAL_ERROR "png_add_test: Missing COMMAND argument") 621- endif() 622- 623- set(TEST_OPTIONS "${_PAT_OPTIONS}") 624- set(TEST_FILES "${_PAT_FILES}") 625- 626- configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/test.cmake.in" 627- "${CMAKE_CURRENT_BINARY_DIR}/tests/${_PAT_NAME}.cmake" @ONLY) 628- add_test(NAME "${_PAT_NAME}" 629- COMMAND "${CMAKE_COMMAND}" 630- "-DLIBPNG=$<TARGET_FILE:png>" 631- "-DTEST_COMMAND=$<TARGET_FILE:${_PAT_COMMAND}>" 632- -P "${CMAKE_CURRENT_BINARY_DIR}/tests/${_PAT_NAME}.cmake") 633-endfunction() 634- 635-if(PNG_TESTS AND PNG_SHARED) 636- # Find test PNG files by globbing, but sort lists to ensure 637- # consistency between different filesystems. 638- file(GLOB PNGSUITE_PNGS "${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/*.png") 639- list(SORT PNGSUITE_PNGS) 640- file(GLOB TEST_PNGS "${CMAKE_CURRENT_SOURCE_DIR}/contrib/testpngs/*.png") 641- list(SORT TEST_PNGS) 642- 643- set(PNGTEST_PNG "${CMAKE_CURRENT_SOURCE_DIR}/pngtest.png") 644- 645- add_executable(pngtest ${pngtest_sources}) 646- target_link_libraries(pngtest png) 647- 648- png_add_test(NAME pngtest COMMAND pngtest FILES "${PNGTEST_PNG}") 649- 650- add_executable(pngvalid ${pngvalid_sources}) 651- target_link_libraries(pngvalid png) 652- 653- png_add_test(NAME pngvalid-gamma-16-to-8 654- COMMAND pngvalid OPTIONS --gamma-16-to-8) 655- png_add_test(NAME pngvalid-gamma-alpha-mode 656- COMMAND pngvalid OPTIONS --gamma-alpha-mode) 657- png_add_test(NAME pngvalid-gamma-background 658- COMMAND pngvalid OPTIONS --gamma-background) 659- png_add_test(NAME pngvalid-gamma-expand16-alpha-mode 660- COMMAND pngvalid OPTIONS --gamma-alpha-mode --expand16) 661- png_add_test(NAME pngvalid-gamma-expand16-background 662- COMMAND pngvalid OPTIONS --gamma-background --expand16) 663- png_add_test(NAME pngvalid-gamma-expand16-transform 664- COMMAND pngvalid OPTIONS --gamma-transform --expand16) 665- png_add_test(NAME pngvalid-gamma-sbit 666- COMMAND pngvalid OPTIONS --gamma-sbit) 667- png_add_test(NAME pngvalid-gamma-threshold 668- COMMAND pngvalid OPTIONS --gamma-threshold) 669- png_add_test(NAME pngvalid-gamma-transform 670- COMMAND pngvalid OPTIONS --gamma-transform) 671- png_add_test(NAME pngvalid-progressive-interlace-standard 672- COMMAND pngvalid OPTIONS --standard --progressive-read --interlace) 673- png_add_test(NAME pngvalid-progressive-size 674- COMMAND pngvalid OPTIONS --size --progressive-read) 675- png_add_test(NAME pngvalid-progressive-standard 676- COMMAND pngvalid OPTIONS --standard --progressive-read) 677- png_add_test(NAME pngvalid-standard 678- COMMAND pngvalid OPTIONS --standard) 679- png_add_test(NAME pngvalid-transform 680- COMMAND pngvalid OPTIONS --transform) 681- 682- add_executable(pngstest ${pngstest_sources}) 683- target_link_libraries(pngstest png) 684- 685- foreach(gamma_type 1.8 linear none sRGB) 686- foreach(alpha_type none alpha) 687- set(PNGSTEST_FILES) 688- foreach(test_png ${TEST_PNGS}) 689- string(REGEX MATCH ".*-linear[-.].*" TEST_PNG_LINEAR "${test_png}") 690- string(REGEX MATCH ".*-sRGB[-.].*" TEST_PNG_SRGB "${test_png}") 691- string(REGEX MATCH ".*-1.8[-.].*" TEST_PNG_G18 "${test_png}") 692- string(REGEX MATCH ".*-alpha-.*" TEST_PNG_ALPHA "${test_png}") 693- 694- set(TEST_PNG_VALID TRUE) 695- 696- if(TEST_PNG_ALPHA) 697- if(NOT "${alpha_type}" STREQUAL "alpha") 698- set(TEST_PNG_VALID FALSE) 699- endif() 700- else() 701- if("${alpha_type}" STREQUAL "alpha") 702- set(TEST_PNG_VALID FALSE) 703- endif() 704- endif() 705- 706- if(TEST_PNG_LINEAR) 707- if(NOT "${gamma_type}" STREQUAL "linear") 708- set(TEST_PNG_VALID FALSE) 709- endif() 710- elseif(TEST_PNG_SRGB) 711- if(NOT "${gamma_type}" STREQUAL "sRGB") 712- set(TEST_PNG_VALID FALSE) 713- endif() 714- elseif(TEST_PNG_G18) 715- if(NOT "${gamma_type}" STREQUAL "1.8") 716- set(TEST_PNG_VALID FALSE) 717- endif() 718- else() 719- if(NOT "${gamma_type}" STREQUAL "none") 720- set(TEST_PNG_VALID FALSE) 721- endif() 722- endif() 723- 724- if(TEST_PNG_VALID) 725- list(APPEND PNGSTEST_FILES "${test_png}") 726- endif() 727- endforeach() 728- # Should already be sorted, but sort anyway to be certain. 729- list(SORT PNGSTEST_FILES) 730- png_add_test(NAME pngstest-${gamma_type}-${alpha_type} 731- COMMAND pngstest 732- OPTIONS --tmpfile "${gamma_type}-${alpha_type}-" --log 733- FILES ${PNGSTEST_FILES}) 734- endforeach() 735- endforeach() 736- 737- add_executable(pngunknown ${pngunknown_sources}) 738- target_link_libraries(pngunknown png) 739- 740- png_add_test(NAME pngunknown-discard COMMAND pngunknown OPTIONS --strict default=discard FILES "${PNGTEST_PNG}") 741- png_add_test(NAME pngunknown-IDAT COMMAND pngunknown OPTIONS --strict default=discard IDAT=save FILES "${PNGTEST_PNG}") 742- png_add_test(NAME pngunknown-if-safe COMMAND pngunknown OPTIONS --strict default=if-safe FILES "${PNGTEST_PNG}") 743- 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 "${PNGTEST_PNG}") 744- png_add_test(NAME pngunknown-save COMMAND pngunknown OPTIONS --strict default=save FILES "${PNGTEST_PNG}") 745- png_add_test(NAME pngunknown-sTER COMMAND pngunknown OPTIONS --strict sTER=if-safe FILES "${PNGTEST_PNG}") 746- png_add_test(NAME pngunknown-vpAg COMMAND pngunknown OPTIONS --strict vpAg=if-safe FILES "${PNGTEST_PNG}") 747- 748- add_executable(pngimage ${pngimage_sources}) 749- target_link_libraries(pngimage png) 750- 751- png_add_test(NAME pngimage-quick COMMAND pngimage OPTIONS --list-combos --log FILES ${PNGSUITE_PNGS}) 752- png_add_test(NAME pngimage-full COMMAND pngimage OPTIONS --exhaustive --list-combos --log FILES ${PNGSUITE_PNGS}) 753-endif() 754- 755-if(PNG_SHARED) 756- add_executable(pngfix ${pngfix_sources}) 757- target_link_libraries(pngfix png) 758- set(PNG_BIN_TARGETS pngfix) 759- 760- add_executable(png-fix-itxt ${png_fix_itxt_sources}) 761- target_link_libraries(png-fix-itxt ${ZLIB_LIBRARY} ${M_LIBRARY}) 762- list(APPEND PNG_BIN_TARGETS png-fix-itxt) 763-endif() 764- 765-# Set a variable with CMake code which: 766-# Creates a symlink from src to dest (if possible) or alternatively 767-# copies if different. 768-include(CMakeParseArguments) 769- 770-function(create_symlink DEST_FILE) 771- 772- cmake_parse_arguments(S "" "FILE;TARGET" "" ${ARGN}) 773- 774- if(NOT S_TARGET AND NOT S_FILE) 775- message(FATAL_ERROR "create_symlink: Missing TARGET or FILE argument") 776- endif() 777- 778- if(S_TARGET AND S_FILE) 779- message(FATAL_ERROR "create_symlink: Both source file ${S_FILE} and build target ${S_TARGET} arguments are present; can only have one.") 780- endif() 781- 782- if(S_FILE) 783- # If we don't need to symlink something that's coming from a build target, 784- # we can go ahead and symlink/copy at configure time. 785- if(CMAKE_HOST_WIN32 AND NOT CYGWIN) 786- execute_process( 787- COMMAND "${CMAKE_COMMAND}" -E copy_if_different ${S_FILE} ${DEST_FILE} 788- WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}") 789- else() 790- execute_process( 791- COMMAND ${CMAKE_COMMAND} -E create_symlink ${S_FILE} ${DEST_FILE} 792- WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}") 793- endif() 794- endif() 795- 796- if(S_TARGET) 797- # We need to use generator expressions, which can be a bit tricky, so for 798- # simplicity make the symlink a POST_BUILD step and use the TARGET 799- # signature of add_custom_command. 800- if(CMAKE_HOST_WIN32 AND NOT CYGWIN) 801- add_custom_command(TARGET ${S_TARGET} POST_BUILD 802- COMMAND "${CMAKE_COMMAND}" -E copy_if_different $<TARGET_LINKER_FILE_NAME:${S_TARGET}> $<TARGET_LINKER_FILE_DIR:${S_TARGET}>/${DEST_FILE}) 803- else() 804- add_custom_command(TARGET ${S_TARGET} POST_BUILD 805- COMMAND "${CMAKE_COMMAND}" -E create_symlink $<TARGET_LINKER_FILE_NAME:${S_TARGET}> $<TARGET_LINKER_FILE_DIR:${S_TARGET}>/${DEST_FILE}) 806- endif() 807- endif() 808- 809-endfunction() 810- 811-# Create source generation scripts. 812-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/genchk.cmake.in 813- ${CMAKE_CURRENT_BINARY_DIR}/scripts/genchk.cmake @ONLY) 814-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/genout.cmake.in 815- ${CMAKE_CURRENT_BINARY_DIR}/scripts/genout.cmake @ONLY) 816-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/gensrc.cmake.in 817- ${CMAKE_CURRENT_BINARY_DIR}/scripts/gensrc.cmake @ONLY) 818- 819-# libpng is a library so default to 'lib' 820-if(NOT DEFINED CMAKE_INSTALL_LIBDIR) 821- set(CMAKE_INSTALL_LIBDIR lib) 822-endif() 823- 824-# CREATE PKGCONFIG FILES 825-# We use the same files like ./configure, so we have to set its vars. 826-# Only do this on Windows for Cygwin - the files don't make much sense outside 827-# of a UNIX look-alike. 828-if(NOT WIN32 OR CYGWIN OR MINGW) 829- set(prefix ${CMAKE_INSTALL_PREFIX}) 830- set(exec_prefix ${CMAKE_INSTALL_PREFIX}) 831- set(libdir ${CMAKE_INSTALL_FULL_LIBDIR}) 832- set(includedir ${CMAKE_INSTALL_FULL_INCLUDEDIR}) 833- set(LIBS "-lz -lm") 834- configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in 835- ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc @ONLY) 836- create_symlink(libpng.pc FILE ${PNGLIB_NAME}.pc) 837- 838- configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in 839- ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config @ONLY) 840- create_symlink(libpng-config FILE ${PNGLIB_NAME}-config) 841-endif() 842- 843-# SET UP LINKS 844-if(PNG_SHARED) 845- set_target_properties(png PROPERTIES 846-# VERSION 16.${PNGLIB_RELEASE}.1.6.37 847- VERSION 16.${PNGLIB_RELEASE}.0 848- SOVERSION 16 849- CLEAN_DIRECT_OUTPUT 1) 850-endif() 851- 852-# INSTALL 853-if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL) 854- install(TARGETS ${PNG_LIB_TARGETS} 855- EXPORT libpng 856- RUNTIME DESTINATION bin 857- LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} 858- ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} 859- FRAMEWORK DESTINATION ${CMAKE_INSTALL_LIBDIR}) 860- 861- if(PNG_SHARED) 862- # Create a symlink for libpng.dll.a => libpng16.dll.a on Cygwin 863- if(CYGWIN OR MINGW) 864- create_symlink(libpng${CMAKE_IMPORT_LIBRARY_SUFFIX} TARGET png) 865- install(FILES $<TARGET_LINKER_FILE_DIR:png>/libpng${CMAKE_IMPORT_LIBRARY_SUFFIX} 866- DESTINATION ${CMAKE_INSTALL_LIBDIR}) 867- endif() 868- 869- if(NOT WIN32) 870- create_symlink(libpng${CMAKE_SHARED_LIBRARY_SUFFIX} TARGET png) 871- install(FILES $<TARGET_LINKER_FILE_DIR:png>/libpng${CMAKE_SHARED_LIBRARY_SUFFIX} 872- DESTINATION ${CMAKE_INSTALL_LIBDIR}) 873- endif() 874- endif() 875- 876- if(PNG_STATIC) 877- if(NOT WIN32 OR CYGWIN OR MINGW) 878- create_symlink(libpng${CMAKE_STATIC_LIBRARY_SUFFIX} TARGET png_static) 879- install(FILES $<TARGET_LINKER_FILE_DIR:png_static>/libpng${CMAKE_STATIC_LIBRARY_SUFFIX} 880- DESTINATION ${CMAKE_INSTALL_LIBDIR}) 881- endif() 882- endif() 883-endif() 884- 885-if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL) 886- install(FILES ${libpng_public_hdrs} DESTINATION include) 887- install(FILES ${libpng_public_hdrs} DESTINATION include/${PNGLIB_NAME}) 888-endif() 889-if(NOT SKIP_INSTALL_EXECUTABLES AND NOT SKIP_INSTALL_ALL) 890- if(NOT WIN32 OR CYGWIN OR MINGW) 891- install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config DESTINATION bin) 892- install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config DESTINATION bin) 893- endif() 894-endif() 895- 896-if(NOT SKIP_INSTALL_PROGRAMS AND NOT SKIP_INSTALL_ALL) 897- install(TARGETS ${PNG_BIN_TARGETS} 898- RUNTIME DESTINATION bin) 899-endif() 900- 901-if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL) 902- # Install man pages 903- if(NOT PNG_MAN_DIR) 904- set(PNG_MAN_DIR "share/man") 905- endif() 906- install(FILES libpng.3 libpngpf.3 DESTINATION ${PNG_MAN_DIR}/man3) 907- install(FILES png.5 DESTINATION ${PNG_MAN_DIR}/man5) 908- # Install pkg-config files 909- if(NOT CMAKE_HOST_WIN32 OR CYGWIN OR MINGW) 910- install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc 911- DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig) 912- install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config 913- DESTINATION bin) 914- install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc 915- DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig) 916- install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config 917- DESTINATION bin) 918- endif() 919-endif() 920- 921-# Create an export file that CMake users can include() to import our targets. 922-if(NOT SKIP_INSTALL_EXPORT AND NOT SKIP_INSTALL_ALL) 923- install(EXPORT libpng DESTINATION lib/libpng FILE lib${PNG_LIB_NAME}.cmake) 924-endif() 925- 926-# what's with libpng-manual.txt and all the extra files? 927- 928-# UNINSTALL 929-# do we need this? 930- 931-# DIST 932-# do we need this? 933- 934-# to create msvc import lib for mingw compiled shared lib 935-# pexports libpng.dll > libpng.def 936-# lib /def:libpng.def /machine:x86 937+cmake_minimum_required(VERSION 3.16.5) 938+ 939+set(LibpngInc "${PROJECT_SOURCE_DIR}/third_party/libpng") 940+set(LibpngSrc "${PROJECT_SOURCE_DIR}/third_party/libpng") 941+ 942+include_directories(${LibpngInc}) 943+message(${LibpngSrc}) 944+add_library(libpng STATIC 945+ ${LibpngSrc}/png.c 946+ ${LibpngSrc}/pngerror.c 947+ ${LibpngSrc}/pngget.c 948+ ${LibpngSrc}/pngmem.c 949+ ${LibpngSrc}/pngpread.c 950+ ${LibpngSrc}/pngread.c 951+ ${LibpngSrc}/pngrio.c 952+ ${LibpngSrc}/pngrtran.c 953+ ${LibpngSrc}/pngrutil.c 954+ ${LibpngSrc}/pngset.c 955+ ${LibpngSrc}/pngtrans.c 956+ ${LibpngSrc}/pngwio.c 957+ ${LibpngSrc}/pngwrite.c 958+ ${LibpngSrc}/pngwtran.c 959+ ${LibpngSrc}/pngwutil.c 960+ ) 961+target_link_libraries(libpng PUBLIC zlib) 962+target_include_directories(libpng PUBLIC ${LibpngInc}) 963
