1# CMakeLists.txt 2 3# Copyright (C) 2007,2009-2016 Glenn Randers-Pehrson 4# Written by Christian Ehrlicher, 2007 5# Revised by Roger Lowman, 2009-2010 6# Revised by Clifford Yapp, 2011-2012 7# Revised by Roger Leigh, 2016 8 9# This code is released under the libpng license. 10# For conditions of distribution and use, see the disclaimer 11# and license in png.h 12 13cmake_minimum_required(VERSION 2.8.3) 14cmake_policy(VERSION 2.8.3) 15 16# Set MacOSX @rpath usage globally. 17if (POLICY CMP0020) 18 cmake_policy(SET CMP0020 NEW) 19endif(POLICY CMP0020) 20if (POLICY CMP0042) 21 cmake_policy(SET CMP0042 NEW) 22endif(POLICY CMP0042) 23# Use new variable expansion policy. 24if (POLICY CMP0053) 25 cmake_policy(SET CMP0053 NEW) 26endif(POLICY CMP0053) 27if (POLICY CMP0054) 28 cmake_policy(SET CMP0054 NEW) 29endif(POLICY CMP0054) 30 31set(CMAKE_CONFIGURATION_TYPES "Release;Debug;MinSizeRel;RelWithDebInfo") 32 33project(libpng C) 34enable_testing() 35 36set(PNGLIB_MAJOR 1) 37set(PNGLIB_MINOR 6) 38set(PNGLIB_RELEASE 22) 39set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR}) 40set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE}) 41 42# needed packages 43find_package(ZLIB REQUIRED) 44include_directories(${ZLIB_INCLUDE_DIR}) 45 46if(NOT WIN32) 47 find_library(M_LIBRARY 48 NAMES m 49 PATHS /usr/lib /usr/local/lib 50 ) 51 if(NOT M_LIBRARY) 52 message(STATUS "math lib 'libm' not found; floating point support disabled") 53 endif() 54else() 55 # not needed on windows 56 set(M_LIBRARY "") 57endif() 58 59# COMMAND LINE OPTIONS 60option(PNG_SHARED "Build shared lib" ON) 61option(PNG_STATIC "Build static lib" ON) 62option(PNG_TESTS "Build libpng tests" ON) 63 64# Many more configuration options could be added here 65option(PNG_FRAMEWORK "Build OS X framework" OFF) 66option(PNG_DEBUG "Build with debug output" OFF) 67option(PNGARG "Disable ANSI-C prototypes" OFF) 68 69set(PNG_PREFIX "" CACHE STRING "Prefix to add to the API function names") 70set(DFA_XTRA "" CACHE FILEPATH "File containing extra configuration settings") 71 72# SET LIBNAME 73set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR}) 74 75# to distinguish between debug and release lib 76set(CMAKE_DEBUG_POSTFIX "d") 77 78include(CheckCSourceCompiles) 79option(ld-version-script "Enable linker version script" ON) 80if(ld-version-script AND NOT APPLE) 81 # Check if LD supports linker scripts. 82 file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/conftest.map" "VERS_1 { 83 global: sym; 84 local: *; 85}; 86 87VERS_2 { 88 global: sym2; 89 main; 90} VERS_1; 91") 92 set(CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS}) 93 set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/conftest.map'") 94 check_c_source_compiles("void sym(void) {} 95void sym2(void) {} 96int main(void) {return 0;} 97" HAVE_LD_VERSION_SCRIPT) 98 if(NOT HAVE_LD_VERSION_SCRIPT) 99 set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE} "-Wl,-M -Wl,${CMAKE_CURRENT_BINARY_DIR}/conftest.map") 100 check_c_source_compiles("void sym(void) {} 101void sym2(void) {} 102int main(void) {return 0;} 103" HAVE_SOLARIS_LD_VERSION_SCRIPT) 104 endif() 105 set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE}) 106 file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/conftest.map") 107endif() 108 109# Find symbol prefix. Likely obsolete and unnecessary with recent 110# toolchains (it's not done in many other projects). 111function(symbol_prefix) 112 set(SYMBOL_PREFIX) 113 114 execute_process(COMMAND "${CMAKE_C_COMPILER}" "-E" "-" 115 INPUT_FILE /dev/null 116 OUTPUT_VARIABLE OUT 117 RESULT_VARIABLE STATUS) 118 119 if(CPP_FAIL) 120 message(WARNING "Failed to run the C preprocessor") 121 endif() 122 123 string(REPLACE "\n" ";" OUT "${OUT}") 124 foreach(line ${OUT}) 125 string(REGEX MATCH "^PREFIX=" found_match "${line}") 126 if(found_match) 127 STRING(REGEX REPLACE "^PREFIX=(.*\)" "\\1" prefix "${line}") 128 string(REGEX MATCH "__USER_LABEL_PREFIX__" found_match "${prefix}") 129 if(found_match) 130 STRING(REGEX REPLACE "(.*)__USER_LABEL_PREFIX__(.*)" "\\1\\2" prefix "${prefix}") 131 endif() 132 set(SYMBOL_PREFIX "${prefix}") 133 endif() 134 endforeach() 135 136 message(STATUS "Symbol prefix: ${SYMBOL_PREFIX}") 137 set(SYMBOL_PREFIX "${SYMBOL_PREFIX}" PARENT_SCOPE) 138endfunction() 139 140if(UNIX) 141 symbol_prefix() 142endif() 143 144find_program(AWK NAMES gawk awk) 145 146include_directories(${CMAKE_CURRENT_BINARY_DIR}) 147 148if(NOT AWK) 149 # No awk available to generate sources; use pre-built pnglibconf.h 150 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt 151 ${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h) 152 add_custom_target(genfiles) # Dummy 153else() 154 include(CMakeParseArguments) 155 # Generate .chk from .out with awk 156 # generate_chk(INPUT inputfile OUTPUT outputfile [DEPENDS dep1 [dep2...]]) 157 function(generate_chk) 158 set(options) 159 set(oneValueArgs INPUT OUTPUT) 160 set(multiValueArgs DEPENDS) 161 cmake_parse_arguments(_GC "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN}) 162 if (NOT _GC_INPUT) 163 message(FATAL_ERROR "Invalid arguments. generate_out requires input.") 164 endif() 165 if (NOT _GC_OUTPUT) 166 message(FATAL_ERROR "Invalid arguments. generate_out requires output.") 167 endif() 168 169 add_custom_command(OUTPUT "${_GC_OUTPUT}" 170 COMMAND "${CMAKE_COMMAND}" 171 "-DINPUT=${_GC_INPUT}" 172 "-DOUTPUT=${_GC_OUTPUT}" 173 -P "${CMAKE_CURRENT_BINARY_DIR}/scripts/genchk.cmake" 174 DEPENDS "${_GC_INPUT}" ${_GC_DEPENDS} 175 WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}") 176 endfunction() 177 178 # Generate .out from .c with awk 179 # generate_out(INPUT inputfile OUTPUT outputfile [DEPENDS dep1 [dep2...]]) 180 function(generate_out) 181 set(options) 182 set(oneValueArgs INPUT OUTPUT) 183 set(multiValueArgs DEPENDS) 184 cmake_parse_arguments(_GO "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN}) 185 if (NOT _GO_INPUT) 186 message(FATAL_ERROR "Invalid arguments. generate_out requires input.") 187 endif() 188 if (NOT _GO_OUTPUT) 189 message(FATAL_ERROR "Invalid arguments. generate_out requires output.") 190 endif() 191 192 add_custom_command(OUTPUT "${_GO_OUTPUT}" 193 COMMAND "${CMAKE_COMMAND}" 194 "-DINPUT=${_GO_INPUT}" 195 "-DOUTPUT=${_GO_OUTPUT}" 196 -P "${CMAKE_CURRENT_BINARY_DIR}/scripts/genout.cmake" 197 DEPENDS "${_GO_INPUT}" ${_GO_DEPENDS} 198 WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}") 199 endfunction() 200 201 # Generate specific source file with awk 202 # generate_source(OUTPUT outputfile [DEPENDS dep1 [dep2...]]) 203 function(generate_source) 204 set(options) 205 set(oneValueArgs OUTPUT) 206 set(multiValueArgs DEPENDS) 207 cmake_parse_arguments(_GSO "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN}) 208 if (NOT _GSO_OUTPUT) 209 message(FATAL_ERROR "Invalid arguments. generate_source requires output.") 210 endif() 211 212 add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${_GSO_OUTPUT}" 213 COMMAND "${CMAKE_COMMAND}" 214 "-DOUTPUT=${_GSO_OUTPUT}" 215 -P "${CMAKE_CURRENT_BINARY_DIR}/scripts/gensrc.cmake" 216 DEPENDS ${_GSO_DEPENDS} 217 WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}") 218 endfunction() 219 220 # Copy file 221 function(generate_copy source destination) 222 add_custom_command(OUTPUT "${destination}" 223 COMMAND "${CMAKE_COMMAND}" -E remove "${destination}" 224 COMMAND "${CMAKE_COMMAND}" -E copy "${source}" 225 "${destination}" 226 DEPENDS "${source}") 227 endfunction() 228 229 # Generate scripts/pnglibconf.h 230 generate_source(OUTPUT "scripts/pnglibconf.c" 231 DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.dfa" 232 "${CMAKE_CURRENT_SOURCE_DIR}/scripts/options.awk" 233 "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h") 234 235 # Generate pnglibconf.c 236 generate_source(OUTPUT "pnglibconf.c" 237 DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.dfa" 238 "${CMAKE_CURRENT_SOURCE_DIR}/scripts/options.awk" 239 "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h") 240 241 if(PNG_PREFIX) 242 set(PNGLIBCONF_H_EXTRA_DEPENDS 243 "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out" 244 "${CMAKE_CURRENT_SOURCE_DIR}/scripts/macro.lst") 245 set(PNGPREFIX_H_EXTRA_DEPENDS 246 "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out") 247 endif() 248 249 generate_out(INPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c" 250 OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out") 251 252 # Generate pnglibconf.h 253 generate_source(OUTPUT "pnglibconf.h" 254 DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out" 255 ${PNGLIBCONF_H_EXTRA_DEPENDS}) 256 257 generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/intprefix.c" 258 OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out" 259 DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h") 260 261 generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/prefix.c" 262 OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out" 263 DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h" 264 "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h" 265 "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out") 266 267 # Generate pngprefix.h 268 generate_source(OUTPUT "pngprefix.h" 269 DEPENDS ${PNGPREFIX_H_EXTRA_DEPENDS}) 270 271 generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/sym.c" 272 OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out" 273 DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h") 274 275 generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/symbols.c" 276 OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out" 277 DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h" 278 "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h" 279 "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt") 280 281 generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/vers.c" 282 OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out" 283 DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h" 284 "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h" 285 "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h") 286 287 generate_chk(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out" 288 OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk" 289 DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/checksym.awk" 290 "${CMAKE_CURRENT_SOURCE_DIR}/scripts/symbols.def") 291 292 add_custom_target(symbol-check DEPENDS 293 "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk") 294 295 generate_copy("${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out" 296 "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym") 297 generate_copy("${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out" 298 "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers") 299 300 add_custom_target(genvers DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers") 301 add_custom_target(gensym DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym") 302 303 add_custom_target("genprebuilt" 304 COMMAND "${CMAKE_COMMAND}" 305 "-DOUTPUT=scripts/pnglibconf.h.prebuilt" 306 -P "${CMAKE_CURRENT_BINARY_DIR}/scripts/gensrc.cmake" 307 WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}") 308 309 # A single target handles generation of all generated files. If 310 # they are dependend upon separately by multiple targets, this 311 # confuses parallel make (it would require a separate top-level 312 # target for each file to track the dependencies properly). 313 add_custom_target(genfiles DEPENDS 314 "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym" 315 "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers" 316 "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c" 317 "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" 318 "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out" 319 "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h" 320 "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out" 321 "${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c" 322 "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out" 323 "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out" 324 "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk" 325 "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out" 326 "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out") 327endif(NOT AWK) 328 329# OUR SOURCES 330set(libpng_public_hdrs 331 png.h 332 pngconf.h 333 "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" 334) 335set(libpng_private_hdrs 336 pngpriv.h 337 pngdebug.h 338 pnginfo.h 339 pngstruct.h 340) 341if(AWK) 342 list(APPEND libpng_private_hdrs "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h") 343endif() 344set(libpng_sources 345 ${libpng_public_hdrs} 346 ${libpng_private_hdrs} 347 png.c 348 pngerror.c 349 pngget.c 350 pngmem.c 351 pngpread.c 352 pngread.c 353 pngrio.c 354 pngrtran.c 355 pngrutil.c 356 pngset.c 357 pngtrans.c 358 pngwio.c 359 pngwrite.c 360 pngwtran.c 361 pngwutil.c 362) 363set(pngtest_sources 364 pngtest.c 365) 366set(pngvalid_sources 367 contrib/libtests/pngvalid.c 368) 369set(pngstest_sources 370 contrib/libtests/pngstest.c 371) 372set(pngunknown_sources 373 contrib/libtests/pngunknown.c 374) 375set(pngimage_sources 376 contrib/libtests/pngimage.c 377) 378set(pngfix_sources 379 contrib/tools/pngfix.c 380) 381set(png_fix_itxt_sources 382 contrib/tools/png-fix-itxt.c 383) 384 385if(MSVC) 386 add_definitions(-D_CRT_SECURE_NO_DEPRECATE) 387endif(MSVC) 388 389if(PNG_DEBUG) 390 add_definitions(-DPNG_DEBUG) 391endif() 392 393# NOW BUILD OUR TARGET 394include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${ZLIB_INCLUDE_DIR}) 395 396unset(PNG_LIB_TARGETS) 397 398if(PNG_SHARED) 399 add_library(png SHARED ${libpng_sources}) 400 set(PNG_LIB_TARGETS png) 401 set_target_properties(png PROPERTIES OUTPUT_NAME ${PNG_LIB_NAME}) 402 add_dependencies(png genfiles) 403 if(MSVC) 404 # msvc does not append 'lib' - do it here to have consistent name 405 set_target_properties(png PROPERTIES PREFIX "lib") 406 set_target_properties(png PROPERTIES IMPORT_PREFIX "lib") 407 endif() 408 target_link_libraries(png ${ZLIB_LIBRARY} ${M_LIBRARY}) 409 410 if(UNIX AND AWK) 411 if(HAVE_LD_VERSION_SCRIPT) 412 set_target_properties(png PROPERTIES LINK_FLAGS 413 "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'") 414 elseif(HAVE_SOLARIS_LD_VERSION_SCRIPT) 415 set_target_properties(png PROPERTIES LINK_FLAGS 416 "-Wl,-M -Wl,'${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'") 417 endif() 418 endif() 419endif() 420 421if(PNG_STATIC) 422 # does not work without changing name 423 set(PNG_LIB_NAME_STATIC png_static) 424 add_library(png_static STATIC ${libpng_sources}) 425 add_dependencies(png_static genfiles) 426 # MSVC doesn't use a different file extension for shared vs. static 427 # libs. We are able to change OUTPUT_NAME to remove the _static 428 # for all other platforms. 429 if(NOT MSVC) 430 set_target_properties(png_static PROPERTIES 431 OUTPUT_NAME "${PNG_LIB_NAME}" 432 CLEAN_DIRECT_OUTPUT 1) 433 else() 434 set_target_properties(png_static PROPERTIES 435 OUTPUT_NAME "${PNG_LIB_NAME}_static" 436 CLEAN_DIRECT_OUTPUT 1) 437 endif() 438 list(APPEND PNG_LIB_TARGETS png_static) 439 if(MSVC) 440 # msvc does not append 'lib' - do it here to have consistent name 441 set_target_properties(png_static PROPERTIES PREFIX "lib") 442 endif() 443 target_link_libraries(png_static ${ZLIB_LIBRARY} ${M_LIBRARY}) 444endif() 445 446if(PNG_FRAMEWORK) 447 set(PNG_LIB_NAME_FRAMEWORK png_framework) 448 add_library(png_framework SHARED ${libpng_sources}) 449 add_dependencies(png_framework genfiles) 450 list(APPEND PNG_LIB_TARGETS png_framework) 451 set_target_properties(png_framework PROPERTIES 452 FRAMEWORK TRUE 453 FRAMEWORK_VERSION ${PNGLIB_VERSION} 454 MACOSX_FRAMEWORK_SHORT_VERSION_STRING ${PNGLIB_MAJOR}.${PNGLIB_MINOR} 455 MACOSX_FRAMEWORK_BUNDLE_VERSION ${PNGLIB_VERSION} 456 MACOSX_FRAMEWORK_IDENTIFIER org.libpng.libpng 457 XCODE_ATTRIBUTE_INSTALL_PATH "@rpath" 458 PUBLIC_HEADER "${libpng_public_hdrs}" 459 OUTPUT_NAME png) 460 target_link_libraries(png_framework ${ZLIB_LIBRARY} ${M_LIBRARY}) 461endif() 462 463if(NOT PNG_LIB_TARGETS) 464 message(SEND_ERROR 465 "No library variant selected to build. " 466 "Please enable at least one of the following options: " 467 " PNG_STATIC, PNG_SHARED, PNG_FRAMEWORK") 468endif() 469 470if(PNG_SHARED AND WIN32) 471 set_target_properties(png PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL) 472endif() 473 474function(png_add_test) 475 set(options) 476 set(oneValueArgs NAME COMMAND) 477 set(multiValueArgs OPTIONS FILES) 478 cmake_parse_arguments(_PAT "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN}) 479 480 if (NOT _PAT_NAME) 481 message(FATAL_ERROR "Invalid arguments. png_add_test requires name.") 482 endif() 483 if (NOT _PAT_COMMAND) 484 message(FATAL_ERROR "Invalid arguments. png_add_test requires command.") 485 endif() 486 487 set(TEST_OPTIONS "${_PAT_OPTIONS}") 488 set(TEST_FILES "${_PAT_FILES}") 489 490 configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/test.cmake.in" 491 "${CMAKE_CURRENT_BINARY_DIR}/tests/${_PAT_NAME}.cmake" @ONLY) 492 if(CMAKE_MAJOR_VERSION GREATER 2) # have generator expressions 493 add_test(NAME "${_PAT_NAME}" 494 COMMAND "${CMAKE_COMMAND}" 495 "-DLIBPNG=$<TARGET_FILE:png>" 496 "-DTEST_COMMAND=$<TARGET_FILE:${_PAT_COMMAND}>" 497 -P "${CMAKE_CURRENT_BINARY_DIR}/tests/${_PAT_NAME}.cmake") 498 else() # old 2.x add_test; limited and won't work well on Windows 499 # Note LIBPNG is a dummy value as there are no generator expressions 500 add_test("${_PAT_NAME}" "${CMAKE_COMMAND}" 501 "-DLIBPNG=${CMAKE_CURRENT_BINARY_DIR}/libpng.so" 502 "-DTEST_COMMAND=./${_PAT_COMMAND}" 503 -P "${CMAKE_CURRENT_BINARY_DIR}/tests/${_PAT_NAME}.cmake") 504 endif() 505endfunction() 506 507if(PNG_TESTS AND PNG_SHARED) 508 # Find test PNG files by globbing, but sort lists to ensure 509 # consistency between different filesystems. 510 file(GLOB PNGSUITE_PNGS "${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/*.png") 511 list(SORT PNGSUITE_PNGS) 512 file(GLOB TEST_PNGS "${CMAKE_CURRENT_SOURCE_DIR}/contrib/testpngs/*.png") 513 list(SORT TEST_PNGS) 514 515 set(PNGTEST_PNG "${CMAKE_CURRENT_SOURCE_DIR}/pngtest.png") 516 517 add_executable(pngtest ${pngtest_sources}) 518 target_link_libraries(pngtest png) 519 520 png_add_test(NAME pngtest COMMAND pngtest FILES "${PNGTEST_PNG}") 521 522 add_executable(pngvalid ${pngvalid_sources}) 523 target_link_libraries(pngvalid png) 524 525 png_add_test(NAME pngvalid-gamma-16-to-8 526 COMMAND pngvalid OPTIONS --gamma-16-to-8) 527 png_add_test(NAME pngvalid-gamma-alpha-mode 528 COMMAND pngvalid OPTIONS --gamma-alpha-mode) 529 png_add_test(NAME pngvalid-gamma-background 530 COMMAND pngvalid OPTIONS --gamma-background) 531 png_add_test(NAME pngvalid-gamma-expand16-alpha-mode 532 COMMAND pngvalid OPTIONS --gamma-alpha-mode --expand16) 533 png_add_test(NAME pngvalid-gamma-expand16-background 534 COMMAND pngvalid OPTIONS --gamma-background --expand16) 535 png_add_test(NAME pngvalid-gamma-expand16-transform 536 COMMAND pngvalid OPTIONS --gamma-transform --expand16) 537 png_add_test(NAME pngvalid-gamma-sbit 538 COMMAND pngvalid OPTIONS --gamma-sbit) 539 png_add_test(NAME pngvalid-gamma-threshold 540 COMMAND pngvalid OPTIONS --gamma-threshold) 541 png_add_test(NAME pngvalid-gamma-transform 542 COMMAND pngvalid OPTIONS --gamma-transform) 543 png_add_test(NAME pngvalid-progressive-interlace-standard 544 COMMAND pngvalid OPTIONS --standard --progressive-read --interlace) 545 png_add_test(NAME pngvalid-progressive-size 546 COMMAND pngvalid OPTIONS --size --progressive-read) 547 png_add_test(NAME pngvalid-progressive-standard 548 COMMAND pngvalid OPTIONS --standard --progressive-read) 549 png_add_test(NAME pngvalid-standard 550 COMMAND pngvalid OPTIONS --standard) 551 png_add_test(NAME pngvalid-transform 552 COMMAND pngvalid OPTIONS --transform) 553 554 add_executable(pngstest ${pngstest_sources}) 555 target_link_libraries(pngstest png) 556 557 foreach(gamma_type 1.8 linear none sRGB) 558 foreach(alpha_type none alpha) 559 set(PNGSTEST_FILES) 560 foreach(test_png ${TEST_PNGS}) 561 string(REGEX MATCH ".*-linear[-.].*" TEST_PNG_LINEAR "${test_png}") 562 string(REGEX MATCH ".*-sRGB[-.].*" TEST_PNG_SRGB "${test_png}") 563 string(REGEX MATCH ".*-1.8[-.].*" TEST_PNG_G18 "${test_png}") 564 string(REGEX MATCH ".*-alpha-.*" TEST_PNG_ALPHA "${test_png}") 565 566 set(TEST_PNG_VALID TRUE) 567 568 if(TEST_PNG_ALPHA) 569 if (NOT "${alpha_type}" STREQUAL "alpha") 570 set(TEST_PNG_VALID FALSE) 571 endif() 572 else() 573 if ("${alpha_type}" STREQUAL "alpha") 574 set(TEST_PNG_VALID FALSE) 575 endif() 576 endif() 577 578 if(TEST_PNG_LINEAR) 579 if(NOT "${gamma_type}" STREQUAL "linear") 580 set(TEST_PNG_VALID FALSE) 581 endif() 582 elseif(TEST_PNG_SRGB) 583 if(NOT "${gamma_type}" STREQUAL "sRGB") 584 set(TEST_PNG_VALID FALSE) 585 endif() 586 elseif(TEST_PNG_G18) 587 if(NOT "${gamma_type}" STREQUAL "1.8") 588 set(TEST_PNG_VALID FALSE) 589 endif() 590 else() 591 if(NOT "${gamma_type}" STREQUAL "none") 592 set(TEST_PNG_VALID FALSE) 593 endif() 594 endif() 595 596 if(TEST_PNG_VALID) 597 list(APPEND PNGSTEST_FILES "${test_png}") 598 endif() 599 endforeach() 600 # Should already be sorted, but sort anyway to be certain. 601 list(SORT PNGSTEST_FILES) 602 png_add_test(NAME pngstest-${gamma_type}-${alpha_type} 603 COMMAND pngstest 604 OPTIONS --tmpfile "${gamma_type}-${alpha_type}-" --log 605 FILES ${PNGSTEST_FILES}) 606 endforeach() 607 endforeach() 608 609 add_executable(pngunknown ${pngunknown_sources}) 610 target_link_libraries(pngunknown png) 611 612 png_add_test(NAME pngunknown-discard COMMAND pngunknown OPTIONS --strict default=discard FILES "${PNGTEST_PNG}") 613 png_add_test(NAME pngunknown-IDAT COMMAND pngunknown OPTIONS --strict default=discard IDAT=save FILES "${PNGTEST_PNG}") 614 png_add_test(NAME pngunknown-if-safe COMMAND pngunknown OPTIONS --strict default=if-safe FILES "${PNGTEST_PNG}") 615 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 "${PNGTEST_PNG}") 616 png_add_test(NAME pngunknown-save COMMAND pngunknown OPTIONS --strict default=save FILES "${PNGTEST_PNG}") 617 png_add_test(NAME pngunknown-sTER COMMAND pngunknown OPTIONS --strict sTER=if-safe FILES "${PNGTEST_PNG}") 618 png_add_test(NAME pngunknown-vpAg COMMAND pngunknown OPTIONS --strict vpAg=if-safe FILES "${PNGTEST_PNG}") 619 620 add_executable(pngimage ${pngimage_sources}) 621 target_link_libraries(pngimage png) 622 623 png_add_test(NAME pngimage-quick COMMAND pngimage OPTIONS --list-combos --log FILES ${PNGSUITE_PNGS}) 624 png_add_test(NAME pngimage-full COMMAND pngimage OPTIONS --exhaustive --list-combos --log FILES ${PNGSUITE_PNGS}) 625endif() 626 627if(PNG_SHARED) 628 add_executable(pngfix ${pngfix_sources}) 629 target_link_libraries(pngfix png) 630 set(PNG_BIN_TARGETS pngfix) 631 632 add_executable(png-fix-itxt ${png_fix_itxt_sources}) 633 target_link_libraries(png-fix-itxt ${ZLIB_LIBRARY} ${M_LIBRARY}) 634 list(APPEND PNG_BIN_TARGETS png-fix-itxt) 635endif() 636 637# Ensure the CMAKE_LIBRARY_OUTPUT_DIRECTORY is set 638IF(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY) 639 SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY "lib") 640ENDIF(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY) 641 642# Set a variable with CMake code which: 643# Creates a symlink from src to dest (if possible) or alternatively 644# copies if different. 645macro(CREATE_SYMLINK SRC_FILE DEST_FILE) 646 FILE(REMOVE ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE}) 647 if(WIN32 AND NOT CYGWIN AND NOT MSYS) 648 ADD_CUSTOM_COMMAND( 649 OUTPUT ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} ${CMAKE_CURRENT_BINARY_DIR}/${DEST_FILE} 650 COMMAND ${CMAKE_COMMAND} -E copy_if_different "${SRC_FILE}" ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} 651 COMMAND ${CMAKE_COMMAND} -E copy_if_different "${SRC_FILE}" ${CMAKE_CURRENT_BINARY_DIR}/${DEST_FILE} 652 DEPENDS ${PNG_LIB_TARGETS} 653 ) 654 ADD_CUSTOM_TARGET(${DEST_FILE}_COPY ALL DEPENDS ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE}) 655 else(WIN32 AND NOT CYGWIN AND NOT MSYS) 656 get_filename_component(LINK_TARGET "${SRC_FILE}" NAME) 657 execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_LIBRARY_OUTPUT_DIRECTORY}) 658 execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink "${LINK_TARGET}" ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}) 659 execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink "${LINK_TARGET}" ${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}) 660 endif(WIN32 AND NOT CYGWIN AND NOT MSYS) 661endmacro() 662 663# Create source generation scripts. 664configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/genchk.cmake.in 665 ${CMAKE_CURRENT_BINARY_DIR}/scripts/genchk.cmake @ONLY) 666configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/genout.cmake.in 667 ${CMAKE_CURRENT_BINARY_DIR}/scripts/genout.cmake @ONLY) 668configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/gensrc.cmake.in 669 ${CMAKE_CURRENT_BINARY_DIR}/scripts/gensrc.cmake @ONLY) 670 671 672# libpng is a library so default to 'lib' 673if(NOT DEFINED CMAKE_INSTALL_LIBDIR) 674 set(CMAKE_INSTALL_LIBDIR lib) 675endif(NOT DEFINED CMAKE_INSTALL_LIBDIR) 676 677# CREATE PKGCONFIG FILES 678# we use the same files like ./configure, so we have to set its vars 679# Only do this on Windows for Cygwin - the files don't make much sense outside 680# a UNIX look alike 681if(NOT WIN32 OR CYGWIN OR MINGW) 682 set(prefix ${CMAKE_INSTALL_PREFIX}) 683 set(exec_prefix ${CMAKE_INSTALL_PREFIX}) 684 set(libdir ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}) 685 set(includedir ${CMAKE_INSTALL_PREFIX}/include) 686 set(LIBS "-lz -lm") 687 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in 688 ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc @ONLY) 689 CREATE_SYMLINK(${PNGLIB_NAME}.pc libpng.pc) 690 691 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in 692 ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config @ONLY) 693 CREATE_SYMLINK(${PNGLIB_NAME}-config libpng-config) 694endif(NOT WIN32 OR CYGWIN OR MINGW) 695 696# SET UP LINKS 697if(PNG_SHARED) 698 set_target_properties(png PROPERTIES 699# VERSION 16.${PNGLIB_RELEASE}.1.6.22beta03 700 VERSION 16.${PNGLIB_RELEASE}.0 701 SOVERSION 16 702 CLEAN_DIRECT_OUTPUT 1) 703endif() 704 705# If CMake > 2.4.x, we set a variable used below to export 706# targets to an export file. 707# TODO: Use VERSION_GREATER after our cmake_minimum_required >= 2.6.2 708if(CMAKE_MAJOR_VERSION GREATER 1 AND CMAKE_MINOR_VERSION GREATER 4) 709 set(PNG_EXPORT_RULE EXPORT libpng) 710elseif(CMAKE_MAJOR_VERSION GREATER 2) # future proof 711 set(PNG_EXPORT_RULE EXPORT libpng) 712endif() 713 714# INSTALL 715if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL ) 716 install(TARGETS ${PNG_LIB_TARGETS} 717 ${PNG_EXPORT_RULE} 718 RUNTIME DESTINATION bin 719 LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} 720 ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} 721 FRAMEWORK DESTINATION ${CMAKE_INSTALL_LIBDIR}) 722 723 if(PNG_SHARED) 724 # Create a symlink for libpng.dll.a => libpng16.dll.a on Cygwin 725 if(CYGWIN OR MINGW) 726 get_target_property(BUILD_TARGET_LOCATION png LOCATION_${CMAKE_BUILD_TYPE}) 727 CREATE_SYMLINK(${BUILD_TARGET_LOCATION} libpng${CMAKE_IMPORT_LIBRARY_SUFFIX}) 728 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_IMPORT_LIBRARY_SUFFIX} 729 DESTINATION ${CMAKE_INSTALL_LIBDIR}) 730 endif(CYGWIN OR MINGW) 731 732 if(NOT WIN32) 733 get_target_property(BUILD_TARGET_LOCATION png LOCATION_${CMAKE_BUILD_TYPE}) 734 CREATE_SYMLINK(${BUILD_TARGET_LOCATION} libpng${CMAKE_SHARED_LIBRARY_SUFFIX}) 735 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_SHARED_LIBRARY_SUFFIX} 736 DESTINATION ${CMAKE_INSTALL_LIBDIR}) 737 endif(NOT WIN32) 738 endif(PNG_SHARED) 739 740 if(PNG_STATIC) 741 if(NOT WIN32 OR CYGWIN OR MINGW) 742 get_target_property(BUILD_TARGET_LOCATION png_static LOCATION_${CMAKE_BUILD_TYPE}) 743 CREATE_SYMLINK(${BUILD_TARGET_LOCATION} libpng${CMAKE_STATIC_LIBRARY_SUFFIX}) 744 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_STATIC_LIBRARY_SUFFIX} 745 DESTINATION ${CMAKE_INSTALL_LIBDIR}) 746 endif(NOT WIN32 OR CYGWIN OR MINGW) 747 endif() 748endif() 749 750if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL ) 751 install(FILES ${libpng_public_hdrs} DESTINATION include) 752 install(FILES ${libpng_public_hdrs} DESTINATION include/${PNGLIB_NAME}) 753endif() 754if(NOT SKIP_INSTALL_EXECUTABLES AND NOT SKIP_INSTALL_ALL ) 755 if(NOT WIN32 OR CYGWIN OR MINGW) 756 install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config DESTINATION bin) 757 install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config 758 DESTINATION bin) 759 endif(NOT WIN32 OR CYGWIN OR MINGW) 760endif() 761 762if(NOT SKIP_INSTALL_PROGRAMS AND NOT SKIP_INSTALL_ALL ) 763 install(TARGETS ${PNG_BIN_TARGETS} 764 RUNTIME DESTINATION bin) 765endif() 766 767if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL ) 768 # Install man pages 769 if(NOT PNG_MAN_DIR) 770 set(PNG_MAN_DIR "share/man") 771 endif() 772 install(FILES libpng.3 libpngpf.3 DESTINATION ${PNG_MAN_DIR}/man3) 773 install(FILES png.5 DESTINATION ${PNG_MAN_DIR}/man5) 774 # Install pkg-config files 775 if(NOT WIN32 OR CYGWIN OR MINGW) 776 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc 777 DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig) 778 install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config 779 DESTINATION bin) 780 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc 781 DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig) 782 install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config 783 DESTINATION bin) 784 endif(NOT WIN32 OR CYGWIN OR MINGW) 785endif() 786 787# On versions of CMake that support it, create an export file CMake 788# users can include() to import our targets 789if(PNG_EXPORT_RULE AND NOT SKIP_INSTALL_EXPORT AND NOT SKIP_INSTALL_ALL ) 790 install(EXPORT libpng DESTINATION lib/libpng FILE lib${PNG_LIB_NAME}.cmake) 791endif() 792 793# what's with libpng-manual.txt and all the extra files? 794 795# UNINSTALL 796# do we need this? 797 798# DIST 799# do we need this? 800 801# to create msvc import lib for mingw compiled shared lib 802# pexports libpng.dll > libpng.def 803# lib /def:libpng.def /machine:x86 804 805
