Branch
Hash :
7916eb7b
Author :
Date :
2025-07-07T11:08:35
riscv: Support only RVV 1.0 Reviewed-by: John Bowler <jbowler@acm.org> Signed-off-by: Cosmin Truta <ctruta@gmail.com>
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142
# CMakeLists.txt - CMake lists for libpng
#
# Copyright (c) 2018-2025 Cosmin Truta
# Copyright (c) 2007-2018 Glenn Randers-Pehrson
# Originally written by Christian Ehrlicher, 2007
#
# Use, modification and distribution are subject to
# the same licensing terms and conditions as libpng.
# Please see the copyright notice in png.h or visit
# http://libpng.org/pub/png/src/libpng-LICENSE.txt
#
# For copyright and licensing purposes, please see
# the accompanying file scripts/cmake/AUTHORS.md
#
# SPDX-License-Identifier: libpng-2.0
cmake_minimum_required(VERSION 3.14...4.0)
set(PNGLIB_MAJOR 1)
set(PNGLIB_MINOR 6)
set(PNGLIB_REVISION 51)
#set(PNGLIB_SUBREVISION 0)
set(PNGLIB_SUBREVISION "git")
set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_REVISION})
set(PNGLIB_ABI_VERSION ${PNGLIB_MAJOR}${PNGLIB_MINOR})
set(PNGLIB_SHARED_VERSION ${PNGLIB_ABI_VERSION}.${PNGLIB_REVISION}.${PNGLIB_SUBREVISION})
project(libpng
VERSION ${PNGLIB_VERSION}
LANGUAGES C ASM)
include(CheckCSourceCompiles)
include(CheckLibraryExists)
include(GNUInstallDirs)
# Allow the users to specify an application-specific API prefix for libpng
# vendoring purposes. A standard libpng build should have no such prefix.
set(PNG_PREFIX
""
CACHE STRING "Prefix to prepend to the API function names")
# Allow the users to override the postfix appended to debug library file names.
# Previously, we used to set CMAKE_DEBUG_POSTFIX globally. That variable should
# not be cached, however, because doing so would affect all projects processed
# after libpng, in unexpected and undesirable ways.
set(PNG_DEBUG_POSTFIX
"d"
CACHE STRING "Postfix to append to library file names under the Debug configuration")
# Allow the users to import their own extra configuration settings.
# Those settings can be either passed via DFA_XTRA if they are in DFA form
# (such as "pngusr.dfa"), or via PNG_LIBCONF_HEADER if they are in prebuilt
# header file form (such as "scripts/pnglibconf.h.prebuilt"), but not both.
# For platforms such as Android or iOS, or in certain cross-platform build
# scenarios, having a valid PNG_LIBCONF_HEADER is mandatory.
set(DFA_XTRA
""
CACHE FILEPATH "DFA file containing customized build configuration settings for libpng")
set(PNG_LIBCONF_HEADER
""
CACHE FILEPATH "C header file containing customized build configuration settings for libpng")
set(PNG_LIBCONF_HEADER_PREBUILT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt")
if(ANDROID OR IOS)
set(PNG_LIBCONF_HEADER "${PNG_LIBCONF_HEADER_PREBUILT}")
endif()
if((NOT DFA_XTRA STREQUAL "") AND (NOT PNG_LIBCONF_HEADER STREQUAL ""))
message(SEND_ERROR "The options DFA_XTRA=\"${DFA_XTRA}\" "
"and PNG_LIBCONF_HEADER=\"${PNG_LIBCONF_HEADER}\" "
"are mutually exclusive")
endif()
# Allow the users to switch on/off various library build types.
option(PNG_SHARED "Build libpng as a shared library" ON)
option(PNG_STATIC "Build libpng as a static library" ON)
if(APPLE)
option(PNG_FRAMEWORK "Build libpng as a framework bundle" ON)
else()
option(PNG_FRAMEWORK "Build libpng as a framework bundle (not available on this platform)" OFF)
endif()
if(NOT APPLE AND PNG_FRAMEWORK)
message(SEND_ERROR "The option PNG_FRAMEWORK should not be set on this platform")
endif()
# Allow the users to switch on/off the auxiliary build and test artifacts.
# These artifacts are NOT part of libpng proper, and are subject to change
# at any time.
option(PNG_TESTS "Build the libpng tests" ON)
# Same as above, but for the third-party tools.
# Although these tools are targetted at development environments only,
# the users are allowed to override the option to build by default.
if(ANDROID OR IOS)
option(PNG_TOOLS "Build the libpng tools" OFF)
else()
option(PNG_TOOLS "Build the libpng tools" ON)
endif()
# Maintain backwards compatibility with the deprecated option PNG_EXECUTABLES.
option(PNG_EXECUTABLES "[Deprecated; please use PNG_TOOLS]" ON)
if(NOT PNG_EXECUTABLES)
message(DEPRECATION "The option PNG_EXECUTABLES has been deprecated in favour of PNG_TOOLS")
if(PNG_TOOLS)
message(AUTHOR_WARNING "Setting PNG_TOOLS to ${PNG_EXECUTABLES}, "
"to stay compatible with PNG_EXECUTABLES")
set(PNG_TOOLS "${PNG_EXECUTABLES}")
endif()
endif()
# Allow the users to switch on/off the use of hardware (SIMD) optimized code.
option(PNG_HARDWARE_OPTIMIZATIONS "Enable hardware optimizations" ON)
# Initialize and show the target architecture variable PNG_TARGET_ARCHITECTURE.
#
# NOTE:
# On macOS, CMake sets CMAKE_SYSTEM_PROCESSOR to either "x86_64" or "arm64",
# based upon the OS architecture, not the target architecture. As such, we need
# to check CMAKE_OSX_ARCHITECTURES to identify which hardware-specific flags to
# enable. Note that this will fail if you attempt to build a universal binary
# in a single CMake invocation.
if(APPLE AND CMAKE_OSX_ARCHITECTURES)
string(TOLOWER "${CMAKE_OSX_ARCHITECTURES}" PNG_TARGET_ARCHITECTURE)
else()
string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" PNG_TARGET_ARCHITECTURE)
endif()
message(STATUS "Building for target architecture: ${PNG_TARGET_ARCHITECTURE}")
# Allow the users to specify a custom location of zlib.
# With CMake 3.12 and newer, this option is no longer necessary.
option(PNG_BUILD_ZLIB "[Deprecated; please use ZLIB_ROOT]" OFF)
if(PNG_BUILD_ZLIB)
if("x${ZLIB_ROOT}" STREQUAL "x")
message(SEND_ERROR "The option PNG_BUILD_ZLIB=${PNG_BUILD_ZLIB} is no longer supported; "
"please use ZLIB_ROOT instead")
else()
message(SEND_ERROR "The option PNG_BUILD_ZLIB=${PNG_BUILD_ZLIB} is no longer supported; "
"using ZLIB_ROOT=\"${ZLIB_ROOT}\"")
endif()
endif()
# Find the zlib library.
find_package(ZLIB REQUIRED)
set(PNG_LINK_LIBRARIES ZLIB::ZLIB)
# Find the math library (unless we already know it's not available or
# not needed).
if(UNIX AND NOT (APPLE OR BEOS OR HAIKU OR EMSCRIPTEN))
check_library_exists(m pow "" PNG_HAVE_LIBM_POW)
endif()
if(PNG_HAVE_LIBM_POW)
list(APPEND PNG_LINK_LIBRARIES m)
endif()
# Silence function deprecation warnings on the Windows compilers that might
# use the MSVC Runtime library headers.
if(WIN32 AND (CMAKE_C_COMPILER_ID MATCHES "MSVC|Intel|Clang"))
add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
endif()
if(PNG_HARDWARE_OPTIMIZATIONS)
# Set definitions and sources for ARM.
if(PNG_TARGET_ARCHITECTURE MATCHES "^(arm|aarch)")
if(PNG_TARGET_ARCHITECTURE MATCHES "^(arm64|aarch64)")
set(PNG_ARM_NEON_POSSIBLE_VALUES on off)
set(PNG_ARM_NEON
"on"
CACHE STRING "Enable ARM NEON optimizations: on|off; on is default")
else()
set(PNG_ARM_NEON_POSSIBLE_VALUES check on off)
set(PNG_ARM_NEON
"off"
CACHE STRING "Enable ARM NEON optimizations: check|on|off; off is default")
endif()
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_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(PNG_TARGET_ARCHITECTURE MATCHES "^(powerpc|ppc64)")
set(PNG_POWERPC_VSX_POSSIBLE_VALUES on off)
set(PNG_POWERPC_VSX
"on"
CACHE STRING "Enable POWERPC VSX optimizations: on|off; on is default")
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(PNG_TARGET_ARCHITECTURE MATCHES "^(i[3-6]86|x86|amd64)")
set(PNG_INTEL_SSE_POSSIBLE_VALUES on off)
set(PNG_INTEL_SSE
"on"
CACHE STRING "Enable INTEL_SSE optimizations: on|off; on is default")
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(PNG_TARGET_ARCHITECTURE MATCHES "^(mipsel|mips64el)")
set(PNG_MIPS_MSA_POSSIBLE_VALUES on off)
set(PNG_MIPS_MSA
"on"
CACHE STRING "Enable MIPS_MSA optimizations: on|off; on is default")
set_property(CACHE PNG_MIPS_MSA
PROPERTY STRINGS ${PNG_MIPS_MSA_POSSIBLE_VALUES})
list(FIND PNG_MIPS_MSA_POSSIBLE_VALUES ${PNG_MIPS_MSA} index_msa)
if(index_msa EQUAL -1)
message(FATAL_ERROR "PNG_MIPS_MSA must be one of [${PNG_MIPS_MSA_POSSIBLE_VALUES}]")
endif()
set(PNG_MIPS_MMI_POSSIBLE_VALUES on off)
set(PNG_MIPS_MMI
"on"
CACHE STRING "Enable MIPS_MMI optimizations: on|off; on is default")
set_property(CACHE PNG_MIPS_MMI
PROPERTY STRINGS ${PNG_MIPS_MMI_POSSIBLE_VALUES})
list(FIND PNG_MIPS_MMI_POSSIBLE_VALUES ${PNG_MIPS_MMI} index_mmi)
if(index_mmi EQUAL -1)
message(FATAL_ERROR "PNG_MIPS_MMI must be one of [${PNG_MIPS_MMI_POSSIBLE_VALUES}]")
endif()
if(PNG_MIPS_MSA STREQUAL "on" AND PNG_MIPS_MMI STREQUAL "on")
set(libpng_mips_sources
mips/mips_init.c
mips/filter_msa_intrinsics.c
mips/filter_mmi_inline_assembly.c)
add_definitions(-DPNG_MIPS_MSA_OPT=2)
add_definitions(-DPNG_MIPS_MMI_OPT=1)
elseif(PNG_MIPS_MSA STREQUAL "on")
set(libpng_mips_sources
mips/mips_init.c
mips/filter_msa_intrinsics.c)
add_definitions(-DPNG_MIPS_MSA_OPT=2)
add_definitions(-DPNG_MIPS_MMI_OPT=0)
elseif(PNG_MIPS_MMI STREQUAL "on")
set(libpng_mips_sources
mips/mips_init.c
mips/filter_mmi_inline_assembly.c)
add_definitions(-DPNG_MIPS_MSA_OPT=0)
add_definitions(-DPNG_MIPS_MMI_OPT=1)
else()
add_definitions(-DPNG_MIPS_MSA_OPT=0)
add_definitions(-DPNG_MIPS_MMI_OPT=0)
endif()
endif()
# Set definitions and sources for LoongArch.
if(PNG_TARGET_ARCHITECTURE MATCHES "^(loongarch)")
include(CheckCCompilerFlag)
set(PNG_LOONGARCH_LSX_POSSIBLE_VALUES on off)
set(PNG_LOONGARCH_LSX
"on"
CACHE STRING "Enable LOONGARCH_LSX optimizations: on|off; on is default")
set_property(CACHE PNG_LOONGARCH_LSX
PROPERTY STRINGS ${PNG_LOONGARCH_LSX_POSSIBLE_VALUES})
list(FIND PNG_LOONGARCH_LSX_POSSIBLE_VALUES ${PNG_LOONGARCH_LSX} index)
if(index EQUAL -1)
message(FATAL_ERROR "PNG_LOONGARCH_LSX must be one of [${PNG_LOONGARCH_LSX_POSSIBLE_VALUES}]")
elseif(NOT PNG_LOONGARCH_LSX STREQUAL "off")
check_c_compiler_flag("-mlsx" COMPILER_SUPPORTS_LSX)
if(COMPILER_SUPPORTS_LSX)
set(libpng_loongarch_sources
loongarch/loongarch_lsx_init.c
loongarch/filter_lsx_intrinsics.c)
set_source_files_properties(${libpng_loongarch_sources}
PROPERTIES COMPILE_FLAGS "-mlsx")
add_definitions(-DPNG_LOONGARCH_LSX_OPT=1)
else()
message(FATAL_ERROR "This compiler does not support the -mlsx option")
endif()
else()
add_definitions(-DPNG_LOONGARCH_LSX_OPT=0)
endif()
endif()
# Set definitions and sources for RISC-V.
if(PNG_TARGET_ARCHITECTURE MATCHES "^(riscv)")
include(CheckCCompilerFlag)
set(PNG_RISCV_RVV_POSSIBLE_VALUES on off)
set(PNG_RISCV_RVV "off"
CACHE STRING "Enable RISC-V Vector optimizations: on|off; off is default")
set_property(CACHE PNG_RISCV_RVV
PROPERTY STRINGS ${PNG_RISCV_RVV_POSSIBLE_VALUES})
list(FIND PNG_RISCV_RVV_POSSIBLE_VALUES ${PNG_RISCV_RVV} index)
if(index EQUAL -1)
message(FATAL_ERROR "PNG_RISCV_RVV must be one of [${PNG_RISCV_RVV_POSSIBLE_VALUES}]")
elseif(NOT PNG_RISCV_RVV STREQUAL "off")
check_c_source_compiles("
#include <riscv_vector.h>
int main() {
const float src[] = { 0.0f, 0.0f, 0.0f, 0.0f };
uint64_t ptr[2] = {0x0908060504020100, 0xFFFFFFFF0E0D0C0A};
vuint8m1_t a = __riscv_vreinterpret_v_u64m1_u8m1(__riscv_vle64_v_u64m1(ptr, 2));
vfloat32m1_t val = __riscv_vle32_v_f32m1((const float*)(src), 4);
return (int)__riscv_vfmv_f_s_f32m1_f32(val);
}" COMPILER_SUPPORTS_RVV)
if(NOT COMPILER_SUPPORTS_RVV)
message(FATAL_ERROR "Compiler does not support RISC-V Vector extension or its unable to detect it")
endif()
set(libpng_riscv_sources
riscv/filter_rvv_intrinsics.c
riscv/riscv_init.c)
if(PNG_RISCV_RVV STREQUAL "on")
add_definitions(-DPNG_RISCV_RVV_OPT=2)
else()
add_definitions(-DPNG_RISCV_RVV_OPT=0)
endif()
else()
add_definitions(-DPNG_RISCV_RVV_OPT=0)
endif()
endif()
else(PNG_HARDWARE_OPTIMIZATIONS)
# Set definitions and sources for ARM.
if(PNG_TARGET_ARCHITECTURE MATCHES "^(arm|aarch)")
add_definitions(-DPNG_ARM_NEON_OPT=0)
endif()
# Set definitions and sources for PowerPC.
if(PNG_TARGET_ARCHITECTURE MATCHES "^(powerpc|ppc64)")
add_definitions(-DPNG_POWERPC_VSX_OPT=0)
endif()
# Set definitions and sources for Intel.
if(PNG_TARGET_ARCHITECTURE MATCHES "^(i[3-6]86|x86|amd64)")
add_definitions(-DPNG_INTEL_SSE_OPT=0)
endif()
# Set definitions and sources for MIPS.
if(PNG_TARGET_ARCHITECTURE MATCHES "^(mipsel|mips64el)")
add_definitions(-DPNG_MIPS_MSA_OPT=0)
endif()
# Set definitions and sources for LoongArch.
if(PNG_TARGET_ARCHITECTURE MATCHES "^(loongarch)")
add_definitions(-DPNG_LOONGARCH_LSX_OPT=0)
endif()
# Set definitions and sources for RISC-V.
if(PNG_TARGET_ARCHITECTURE MATCHES "^(riscv)")
add_definitions(-DPNG_RISCV_RVV_OPT=0)
endif()
endif(PNG_HARDWARE_OPTIMIZATIONS)
option(ld-version-script "Enable linker version script" ON)
if(ld-version-script AND NOT (ANDROID OR APPLE))
# Check if LD supports linker scripts.
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/conftest.map" "
VERS_1 { global: sym1; local: *; };
VERS_2 { global: sym2; main; } VERS_1;
")
set(_SAVED_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
if(NOT CMAKE_HOST_SOLARIS)
# Avoid using CMAKE_SHARED_LIBRARY_C_FLAGS in version script checks on
# Solaris, because of an incompatibility with the Solaris link editor.
list(APPEND CMAKE_REQUIRED_FLAGS ${CMAKE_SHARED_LIBRARY_C_FLAGS})
endif()
list(APPEND CMAKE_REQUIRED_FLAGS
"-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/conftest.map'")
check_c_source_compiles("
void sym1(void) {}
void sym2(void) {}
int main(void) { return 0; }
" HAVE_LD_VERSION_SCRIPT)
if(NOT HAVE_LD_VERSION_SCRIPT)
set(CMAKE_REQUIRED_FLAGS ${_SAVED_CMAKE_REQUIRED_FLAGS})
if(NOT CMAKE_HOST_SOLARIS)
# Again, avoid using CMAKE_SHARED_LIBRARY_C_FLAGS in version script
# checks on Solaris.
list(APPEND CMAKE_REQUIRED_FLAGS ${CMAKE_SHARED_LIBRARY_C_FLAGS})
endif()
list(APPEND CMAKE_REQUIRED_FLAGS "-Wl,-M -Wl,${CMAKE_CURRENT_BINARY_DIR}/conftest.map")
check_c_source_compiles("
void sym1(void) {}
void sym2(void) {}
int main(void) { return 0; }
" HAVE_SOLARIS_LD_VERSION_SCRIPT)
endif()
set(CMAKE_REQUIRED_FLAGS ${_SAVED_CMAKE_REQUIRED_FLAGS})
file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/conftest.map")
endif()
if(PNG_LIBCONF_HEADER STREQUAL "")
# No custom configuration header file has been specified, so we build it
# from our DFA files and (optionally) out of the user-supplied DFA file.
# Find an AWK language processor.
# Start with specific AWK implementations like gawk and nawk, which are
# known to work with our scripts, then fall back to the system awk.
find_program(AWK NAMES gawk nawk awk)
if(AWK)
message(STATUS "Found AWK program: ${AWK}")
else()
message(STATUS "Could not find an AWK-compatible program")
endif()
endif()
# Include the internal module PNGCheckLibconf.cmake
include("${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/PNGCheckLibconf.cmake")
if(NOT PNG_LIBCONF_HEADER STREQUAL "")
# Configure libpng with the user-defined pnglibconf.h file.
png_check_libconf(HEADER "${PNG_LIBCONF_HEADER}")
configure_file("${PNG_LIBCONF_HEADER}"
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
@ONLY)
add_custom_target(png_genfiles)
elseif(NOT AWK)
# No AWK program available to generate pnglibconf.h.
# Configure libpng with pnglibconf.h.prebuilt.
png_check_libconf(HEADER "${PNG_LIBCONF_HEADER_PREBUILT}")
configure_file("${PNG_LIBCONF_HEADER_PREBUILT}"
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
@ONLY)
add_custom_target(png_genfiles)
else()
png_check_libconf(DFA_XTRA "${DFA_XTRA}")
# Include the internal module PNGGenConfig.cmake
include("${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/PNGGenConfig.cmake")
# Work around a limitation of various Windows AWK programs that are
# unable to process CRLF-terminated AWK scripts.
# Copy these AWK scripts to a temporary location, converting their
# line endings from Windows (CRLF) to Unix (LF) at the destination.
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/checksym.awk"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/checksym.awk"
@ONLY
NEWLINE_STYLE LF)
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/options.awk"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/options.awk"
@ONLY
NEWLINE_STYLE LF)
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/dfn.awk"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/dfn.awk"
@ONLY
NEWLINE_STYLE LF)
# Generate scripts/pnglibconf.h
generate_source(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c"
DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.dfa"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/options.awk"
"${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h")
# Generate pnglibconf.c
generate_source(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c"
DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.dfa"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/options.awk"
"${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 "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out")
# Generate pnglibconf.h
generate_source(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/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"
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out")
# Generate pngprefix.h
generate_source(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/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 "${CMAKE_CURRENT_BINARY_DIR}/scripts/checksym.awk"
"${CMAKE_CURRENT_SOURCE_DIR}/scripts/symbols.def")
generate_copy(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out"
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym")
generate_copy(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out"
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers")
add_custom_target(png_genprebuilt
COMMAND "${CMAKE_COMMAND}"
"-DOUTPUT=scripts/pnglibconf.h.prebuilt"
-P "${CMAKE_CURRENT_BINARY_DIR}/scripts/cmake/gensrc.cmake"
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
# A single target handles generation of all generated files.
add_custom_target(png_genfiles
DEPENDS "${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()
# List the source code files.
set(libpng_public_hdrs
png.h
pngconf.h
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
)
set(libpng_private_hdrs
pngpriv.h
pngdebug.h
pnginfo.h
pngstruct.h
)
if(AWK)
list(APPEND libpng_private_hdrs "${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}
${libpng_loongarch_sources}
${libpng_riscv_sources}
)
set(pngtest_sources
pngtest.c
)
set(pngvalid_sources
contrib/libtests/pngvalid.c
)
set(pngstest_sources
contrib/libtests/pngstest.c
)
set(pngunknown_sources
contrib/libtests/pngunknown.c
)
set(pngimage_sources
contrib/libtests/pngimage.c
)
set(pngfix_sources
contrib/tools/pngfix.c
)
set(png_fix_itxt_sources
contrib/tools/png-fix-itxt.c
)
# Now build our targets.
# Initialize the list of libpng library targets.
set(PNG_LIBRARY_TARGETS "")
# Initialize the libpng library file names.
if(UNIX
OR (WIN32 AND NOT CMAKE_SHARED_LIBRARY_PREFIX STREQUAL "")
OR (WIN32 AND NOT CMAKE_STATIC_LIBRARY_PREFIX STREQUAL ""))
# We are on a Unix or Unix-like toolchain like the GNU toolchain on Windows.
# Library file names are expected to have an implicit prefix such as "lib".
# Let CMake prepend and append its usual prefixes and suffixes by default.
set(PNG_SHARED_OUTPUT_NAME "png${PNGLIB_ABI_VERSION}")
set(PNG_STATIC_OUTPUT_NAME "png${PNGLIB_ABI_VERSION}")
else()
# We are, most likely, on a Windows toolchain like MSVC, Clang on Windows,
# Borland/Embarcadero, etc. We need to specify the "libpng" name explicitly.
# We also need to use a custom suffix, in order to distinguish between the
# shared import library name and the static library name.
set(PNG_SHARED_OUTPUT_NAME "libpng${PNGLIB_ABI_VERSION}")
set(PNG_STATIC_OUTPUT_NAME "libpng${PNGLIB_ABI_VERSION}_static")
endif()
if(PNG_SHARED)
add_library(png_shared SHARED ${libpng_sources})
add_dependencies(png_shared png_genfiles)
list(APPEND PNG_LIBRARY_TARGETS png_shared)
set_target_properties(png_shared
PROPERTIES OUTPUT_NAME "${PNG_SHARED_OUTPUT_NAME}"
DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}"
VERSION "${PNGLIB_SHARED_VERSION}"
SOVERSION "${PNGLIB_ABI_VERSION}")
if(UNIX AND AWK)
if(HAVE_LD_VERSION_SCRIPT)
set_target_properties(png_shared
PROPERTIES LINK_FLAGS "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'")
elseif(HAVE_SOLARIS_LD_VERSION_SCRIPT)
set_target_properties(png_shared
PROPERTIES LINK_FLAGS "-Wl,-M -Wl,'${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'")
endif()
endif()
if(APPLE)
# Avoid CMake's implicit compile definition "png_shared_EXPORTS".
set_target_properties(png_shared
PROPERTIES DEFINE_SYMBOL "")
elseif(WIN32)
# Use the explicit compile definition "PNG_BUILD_DLL" for Windows DLLs.
set_target_properties(png_shared
PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
endif()
target_include_directories(png_shared
PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>")
target_include_directories(png_shared
PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>")
target_include_directories(png_shared
SYSTEM
INTERFACE "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION}>")
target_link_libraries(png_shared
PUBLIC ${PNG_LINK_LIBRARIES})
endif()
if(PNG_STATIC)
add_library(png_static STATIC ${libpng_sources})
add_dependencies(png_static png_genfiles)
list(APPEND PNG_LIBRARY_TARGETS png_static)
set_target_properties(png_static
PROPERTIES OUTPUT_NAME "${PNG_STATIC_OUTPUT_NAME}"
DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}")
target_include_directories(png_static
PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>")
target_include_directories(png_static
PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>")
target_include_directories(png_static
SYSTEM
INTERFACE "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION}>")
target_link_libraries(png_static
PUBLIC ${PNG_LINK_LIBRARIES})
endif()
if(PNG_FRAMEWORK AND NOT APPLE)
message(AUTHOR_WARNING "Setting PNG_FRAMEWORK to OFF, as it only applies to Apple systems")
set(PNG_FRAMEWORK OFF)
endif()
if(PNG_FRAMEWORK)
add_library(png_framework SHARED ${libpng_sources})
add_dependencies(png_framework png_genfiles)
list(APPEND PNG_LIBRARY_TARGETS png_framework)
set_target_properties(png_framework
PROPERTIES FRAMEWORK TRUE
FRAMEWORK_VERSION "${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"
DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}")
# Avoid CMake's implicit compile definition "-Dpng_framework_EXPORTS".
set_target_properties(png_framework
PROPERTIES DEFINE_SYMBOL "")
target_include_directories(png_framework
PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>")
target_include_directories(png_framework
PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>")
target_include_directories(png_framework
SYSTEM
INTERFACE "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION}>")
target_link_libraries(png_framework
PUBLIC ${PNG_LINK_LIBRARIES})
endif()
if(NOT PNG_LIBRARY_TARGETS)
message(SEND_ERROR "No library variant selected to build. "
"Please enable at least one of the following options: "
"PNG_SHARED, PNG_STATIC, PNG_FRAMEWORK")
endif()
if(PNG_TESTS AND PNG_SHARED)
enable_testing()
# Include the internal module PNGTest.cmake
include("${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/PNGTest.cmake")
# 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)
file(GLOB TEST_PNG3_PNGS "${CMAKE_CURRENT_SOURCE_DIR}/contrib/testpngs/png-3/*.png")
list(SORT TEST_PNG3_PNGS)
set(PNGTEST_PNG "${CMAKE_CURRENT_SOURCE_DIR}/pngtest.png")
add_executable(pngtest ${pngtest_sources})
target_link_libraries(pngtest
PRIVATE png_shared)
png_add_test(NAME pngtest
COMMAND pngtest
FILES "${PNGTEST_PNG}")
png_add_test(NAME pngtest-png-3
COMMAND pngtest
FILES "${TEST_PNG3_PNGS}")
add_executable(pngvalid ${pngvalid_sources})
target_link_libraries(pngvalid
PRIVATE png_shared)
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
PRIVATE png_shared)
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 ${pngunknown_sources})
target_link_libraries(pngunknown
PRIVATE png_shared)
png_add_test(NAME pngunknown-discard
COMMAND pngunknown
OPTIONS --strict default=discard
FILES "${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
PRIVATE png_shared)
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 AND PNG_TOOLS)
add_executable(pngfix ${pngfix_sources})
target_link_libraries(pngfix
PRIVATE png_shared)
set(PNG_BIN_TARGETS pngfix)
add_executable(png-fix-itxt ${png_fix_itxt_sources})
target_link_libraries(png-fix-itxt
PRIVATE ${PNG_LINK_LIBRARIES})
list(APPEND PNG_BIN_TARGETS png-fix-itxt)
endif()
# Create a symlink that points to a target file (if symlinking is possible),
# or make a copy of the target file (if symlinking is not possible):
# create_symlink(<destfile> [FILE <file> | TARGET <target>])
function(create_symlink DEST_FILE)
# TODO:
# Replace this implementation with CMake's built-in create_symlink function,
# which has been fully functional on all platforms, including Windows, since
# CMake version 3.13.
cmake_parse_arguments(_SYM "" "FILE;TARGET" "" ${ARGN})
if(NOT _SYM_FILE AND NOT _SYM_TARGET)
message(FATAL_ERROR "create_symlink: Missing arguments: FILE or TARGET")
endif()
if(_SYM_FILE AND _SYM_TARGET)
message(FATAL_ERROR "create_symlink: Mutually-exlusive arguments:"
"FILE (${_SYM_FILE}) and TARGET (${_SYM_TARGET})")
endif()
if(_SYM_FILE)
# If we don't need to symlink something that's coming from a build target,
# we can go ahead and symlink/copy at configure time.
if(CMAKE_HOST_WIN32 AND NOT CYGWIN)
execute_process(COMMAND "${CMAKE_COMMAND}"
-E copy_if_different
"${_SYM_FILE}"
"${DEST_FILE}"
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
else()
execute_process(COMMAND "${CMAKE_COMMAND}"
-E create_symlink
"${_SYM_FILE}"
"${DEST_FILE}"
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
endif()
endif()
if(_SYM_TARGET)
# We need to use generator expressions, which can be a bit tricky.
# 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 ${_SYM_TARGET}
POST_BUILD
COMMAND "${CMAKE_COMMAND}"
-E copy_if_different
"$<TARGET_LINKER_FILE_DIR:${_SYM_TARGET}>/$<TARGET_LINKER_FILE_NAME:${_SYM_TARGET}>"
"$<TARGET_LINKER_FILE_DIR:${_SYM_TARGET}>/${DEST_FILE}")
else()
add_custom_command(TARGET ${_SYM_TARGET}
POST_BUILD
COMMAND "${CMAKE_COMMAND}"
-E create_symlink
"$<TARGET_LINKER_FILE_NAME:${_SYM_TARGET}>"
"$<TARGET_LINKER_FILE_DIR:${_SYM_TARGET}>/${DEST_FILE}")
endif()
endif()
endfunction()
# Create source generation scripts.
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/genchk.cmake.in"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/cmake/genchk.cmake"
@ONLY)
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/genout.cmake.in"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/cmake/genout.cmake"
@ONLY)
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/gensrc.cmake.in"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/cmake/gensrc.cmake"
@ONLY)
# libpng is a library so default to 'lib'
if(NOT DEFINED CMAKE_INSTALL_LIBDIR)
set(CMAKE_INSTALL_LIBDIR lib)
endif()
# Create pkgconfig files.
# We use the same files like ./configure, so we have to set its vars.
# Only do this on Windows for Cygwin - the files don't make much sense
# outside of a UNIX look-alike.
if(NOT WIN32 OR CYGWIN OR MINGW)
set(prefix "${CMAKE_INSTALL_PREFIX}")
set(exec_prefix "${CMAKE_INSTALL_PREFIX}")
set(libdir "${CMAKE_INSTALL_FULL_LIBDIR}")
set(includedir "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
set(LIBS "-lz -lm")
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in"
"${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}.pc"
@ONLY)
create_symlink(libpng.pc FILE libpng${PNGLIB_ABI_VERSION}.pc)
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in"
"${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}-config"
@ONLY)
create_symlink(libpng-config FILE libpng${PNGLIB_ABI_VERSION}-config)
endif()
# Install.
if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL)
install(TARGETS ${PNG_LIBRARY_TARGETS}
EXPORT libpng
RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
FRAMEWORK DESTINATION "${CMAKE_INSTALL_LIBDIR}")
if(PNG_SHARED)
# Create a symlink for libpng.dll.a => libpng16.dll.a on Cygwin
if(NOT WIN32 OR CYGWIN OR MINGW)
create_symlink(libpng${CMAKE_SHARED_LIBRARY_SUFFIX} TARGET png_shared)
install(FILES "$<TARGET_LINKER_FILE_DIR:png_shared>/libpng${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 ${libpng_public_hdrs}
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
install(FILES ${libpng_public_hdrs}
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION}")
endif()
if(NOT SKIP_INSTALL_EXECUTABLES AND NOT SKIP_INSTALL_ALL)
if(NOT WIN32 OR CYGWIN OR MINGW)
install(PROGRAMS "${CMAKE_CURRENT_BINARY_DIR}/libpng-config"
DESTINATION "${CMAKE_INSTALL_BINDIR}")
install(PROGRAMS "${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}-config"
DESTINATION "${CMAKE_INSTALL_BINDIR}")
endif()
endif()
if(NOT SKIP_INSTALL_PROGRAMS AND NOT SKIP_INSTALL_ALL)
install(TARGETS ${PNG_BIN_TARGETS}
RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
endif()
if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL)
# Install the man pages.
install(FILES libpng.3 libpngpf.3
DESTINATION "${CMAKE_INSTALL_MANDIR}/man3")
install(FILES png.5
DESTINATION "${CMAKE_INSTALL_MANDIR}/man5")
# Install the 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 "${CMAKE_CURRENT_BINARY_DIR}/libpng-config"
DESTINATION "${CMAKE_INSTALL_BINDIR}")
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}.pc"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
install(PROGRAMS "${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}-config"
DESTINATION "${CMAKE_INSTALL_BINDIR}")
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 "${CMAKE_INSTALL_LIBDIR}/libpng"
FILE libpng${PNGLIB_ABI_VERSION}.cmake)
endif()
# Create a CMake Config File that can be used via find_package(PNG CONFIG)
if(NOT SKIP_INSTALL_CONFIG_FILE AND NOT SKIP_INSTALL_ALL)
install(TARGETS ${PNG_LIBRARY_TARGETS}
EXPORT PNGTargets
RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
FRAMEWORK DESTINATION "${CMAKE_INSTALL_LIBDIR}")
include(CMakePackageConfigHelpers)
write_basic_package_version_file(PNGConfigVersion.cmake
VERSION ${PNGLIB_VERSION}
COMPATIBILITY SameMinorVersion)
install(EXPORT PNGTargets
FILE PNGTargets.cmake
NAMESPACE PNG::
DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/PNG")
install(FILES "${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/PNGConfig.cmake"
"${CMAKE_CURRENT_BINARY_DIR}/PNGConfigVersion.cmake"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/PNG")
endif()
# TODO: Create MSVC import lib for MinGW-compiled shared lib.
# pexports libpng.dll > libpng.def
# lib /def:libpng.def /machine:x86