forked from pnggroup/libpng
-
Notifications
You must be signed in to change notification settings - Fork 0
/
CMakeLists.txt
1062 lines (956 loc) · 39.9 KB
/
CMakeLists.txt
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
# CMakeLists.txt
# Copyright (c) 2018-2023 Cosmin Truta
# Copyright (c) 2007,2009-2018 Glenn Randers-Pehrson
# Written by Christian Ehrlicher, 2007
# Revised by Roger Lowman, 2009-2010
# Revised by Clifford Yapp, 2011-2012,2017
# Revised by Claudio Bley, 2013
# Revised by Roger Leigh, 2016
# Revised by Andreas Franek, 2016
# Revised by Sam Serrels, 2017
# Revised by Vadim Barkov, 2017
# Revised by Vicky Pfau, 2018
# Revised by Cameron Cawley, 2018,2021
# Revised by Kyle Bentley, 2018
# Revised by David Callu, 2020
# Revised by Steve Robinson, 2020
# Revised by Simon Hausmann, 2020
# Revised by Alex Gaynor, 2020
# Revised by Owen Rudge, 2020
# Revised by Gleb Mazovetskiy, 2021
# Revised by Christopher Sean Morrison, 2022
# Revised by B. Scott Michel, 2022
# Revised by Jeremy Maitin-Shepard, 2022
# Revised by Martin Storsjo, 2022
# Revised by Jon Creighton, 2023
# Revised by Gunther Nikl, 2023
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
cmake_minimum_required(VERSION 3.1)
cmake_policy(VERSION 3.1)
project(libpng C ASM)
enable_testing()
include(CMakeParseArguments)
include(CheckCSourceCompiles)
include(GNUInstallDirs)
set(PNGLIB_MAJOR 1)
set(PNGLIB_MINOR 6)
set(PNGLIB_REVISION 40)
#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}.${PNGLIB_SUBREVISION})
# Allow the users to specify an application-specific API prefix for libpng
# vendoring purposes. A standard libpng build should have no such prefix.
set(PNG_PREFIX ""
CACHE STRING "Prefix to prepend to the API function names")
# Allow the users to override the postfix appended to debug library file names.
# Previously, we used to set CMAKE_DEBUG_POSTFIX globally. That variable should
# not be cached, however, because doing so would affect all projects processed
# after libpng, in unexpected and undesirable ways.
set(PNG_DEBUG_POSTFIX "d"
CACHE STRING "Postfix to append to library file names under the Debug configuration")
# Allow the users to import their own extra configuration settings.
set(DFA_XTRA ""
CACHE FILEPATH "File containing extra configuration settings")
# Allow the users to configure the following build options.
option(PNG_SHARED "Build libpng as a shared lib" ON)
option(PNG_STATIC "Build libpng as a static lib" ON)
option(PNG_FRAMEWORK "Build libpng as a Mac OS X framework" OFF)
option(PNG_EXECUTABLES "Build libpng executables" ON)
option(PNG_TESTS "Build libpng tests" ON)
option(PNG_DEBUG "Enable debug output" OFF)
option(PNG_HARDWARE_OPTIMIZATIONS "Enable hardware optimizations" ON)
# Allow the users to specify a location of zlib.
# Useful if zlib is being built alongside this as a sub-project.
option(PNG_BUILD_ZLIB "Custom zlib location, else find_package is used" OFF)
if(NOT PNG_BUILD_ZLIB)
find_package(ZLIB REQUIRED)
include_directories(${ZLIB_INCLUDE_DIRS})
endif()
if(UNIX AND NOT APPLE AND NOT BEOS AND NOT HAIKU AND NOT EMSCRIPTEN)
find_library(M_LIBRARY m)
if(NOT M_LIBRARY)
set(M_LIBRARY "")
endif()
else()
# libm is not needed and/or not available.
set(M_LIBRARY "")
endif()
# CMake currently sets CMAKE_SYSTEM_PROCESSOR to one of x86_64 or arm64 on macOS,
# 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)
set(TARGET_ARCH ${CMAKE_OSX_ARCHITECTURES})
else()
set(TARGET_ARCH ${CMAKE_SYSTEM_PROCESSOR})
endif()
if(PNG_HARDWARE_OPTIMIZATIONS)
# Set definitions and sources for ARM.
if(TARGET_ARCH MATCHES "^arm" OR
TARGET_ARCH MATCHES "^aarch64")
if(TARGET_ARCH MATCHES "^arm64" OR
TARGET_ARCH MATCHES "^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 ${PNG_ARM_NEON} STREQUAL "off")
set(libpng_arm_sources
arm/arm_init.c
arm/filter_neon.S
arm/filter_neon_intrinsics.c
arm/palette_neon_intrinsics.c)
if(${PNG_ARM_NEON} STREQUAL "on")
add_definitions(-DPNG_ARM_NEON_OPT=2)
elseif(${PNG_ARM_NEON} STREQUAL "check")
add_definitions(-DPNG_ARM_NEON_CHECK_SUPPORTED)
endif()
else()
add_definitions(-DPNG_ARM_NEON_OPT=0)
endif()
endif()
# Set definitions and sources for PowerPC.
if(TARGET_ARCH MATCHES "^powerpc*" OR
TARGET_ARCH MATCHES "^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(TARGET_ARCH MATCHES "^i?86" OR
TARGET_ARCH MATCHES "^x86_64*")
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(TARGET_ARCH MATCHES "mipsel*" OR
TARGET_ARCH MATCHES "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 ${PNG_MIPS_MSA} index)
if(index EQUAL -1)
message(FATAL_ERROR "PNG_MIPS_MSA must be one of [${PNG_MIPS_MSA_POSSIBLE_VALUES}]")
elseif(NOT ${PNG_MIPS_MSA} STREQUAL "off")
set(libpng_mips_sources
mips/mips_init.c
mips/filter_msa_intrinsics.c)
if(${PNG_MIPS_MSA} STREQUAL "on")
add_definitions(-DPNG_MIPS_MSA_OPT=2)
endif()
else()
add_definitions(-DPNG_MIPS_MSA_OPT=0)
endif()
endif()
else(PNG_HARDWARE_OPTIMIZATIONS)
# Set definitions and sources for ARM.
if(TARGET_ARCH MATCHES "^arm" OR
TARGET_ARCH MATCHES "^aarch64")
add_definitions(-DPNG_ARM_NEON_OPT=0)
endif()
# Set definitions and sources for PowerPC.
if(TARGET_ARCH MATCHES "^powerpc*" OR
TARGET_ARCH MATCHES "^ppc64*")
add_definitions(-DPNG_POWERPC_VSX_OPT=0)
endif()
# Set definitions and sources for Intel.
if(TARGET_ARCH MATCHES "^i?86" OR
TARGET_ARCH MATCHES "^x86_64*")
add_definitions(-DPNG_INTEL_SSE_OPT=0)
endif()
# Set definitions and sources for MIPS.
if(TARGET_ARCH MATCHES "mipsel*" OR
TARGET_ARCH MATCHES "mips64el*")
add_definitions(-DPNG_MIPS_MSA_OPT=0)
endif()
endif(PNG_HARDWARE_OPTIMIZATIONS)
option(ld-version-script "Enable linker version script" ON)
if(ld-version-script AND NOT ANDROID AND NOT 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(CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS})
set(CMAKE_REQUIRED_FLAGS
${CMAKE_REQUIRED_FLAGS}
${CMAKE_SHARED_LIBRARY_C_FLAGS}
"-Wl,--version-script='${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
${CMAKE_REQUIRED_FLAGS_SAVE}
${CMAKE_SHARED_LIBRARY_C_FLAGS}
"-Wl,-M -Wl,${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 ${CMAKE_REQUIRED_FLAGS_SAVE})
file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/conftest.map")
endif()
# Find symbol prefix. Likely obsolete and unnecessary with recent
# toolchains (it's not done in many other projects).
function(find_symbol_prefix)
set(SYMBOL_PREFIX)
execute_process(COMMAND "${CMAKE_C_COMPILER}" -E -
INPUT_FILE /dev/null
OUTPUT_VARIABLE OUT
RESULT_VARIABLE STATUS)
if(CPP_FAIL)
message(WARNING "Failed to run the C preprocessor")
endif()
string(REPLACE "\n" ";" OUT "${OUT}")
foreach(line ${OUT})
string(REGEX MATCH "^PREFIX=" found_match "${line}")
if(found_match)
string(REGEX REPLACE "^PREFIX=(.*\)" "\\1" prefix "${line}")
string(REGEX MATCH "__USER_LABEL_PREFIX__" found_match "${prefix}")
if(found_match)
string(REGEX REPLACE "(.*)__USER_LABEL_PREFIX__(.*)" "\\1\\2" prefix "${prefix}")
endif()
set(SYMBOL_PREFIX "${prefix}")
endif()
endforeach()
message(STATUS "Symbol prefix: ${SYMBOL_PREFIX}")
set(SYMBOL_PREFIX "${SYMBOL_PREFIX}" PARENT_SCOPE)
endfunction()
if(UNIX)
find_symbol_prefix()
endif()
find_program(AWK NAMES gawk awk)
include_directories(${CMAKE_CURRENT_BINARY_DIR})
if(NOT AWK OR ANDROID OR IOS)
# No awk available to generate sources; use pre-built pnglibconf.h
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt
${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h)
add_custom_target(png_genfiles)
else()
# Copy the awk scripts, converting their line endings to Unix (LF)
configure_file(${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
${CMAKE_CURRENT_BINARY_DIR}/scripts/dfn.awk
@ONLY
NEWLINE_STYLE LF)
# Generate .chk from .out with awk:
# generate_chk(INPUT inputfile OUTPUT outputfile [DEPENDS dep1 [dep2...]])
function(generate_chk)
set(options)
set(oneValueArgs INPUT OUTPUT)
set(multiValueArgs DEPENDS)
cmake_parse_arguments(_GC "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(NOT _GC_INPUT)
message(FATAL_ERROR "generate_chk: Missing INPUT argument")
endif()
if(NOT _GC_OUTPUT)
message(FATAL_ERROR "generate_chk: Missing OUTPUT argument")
endif()
add_custom_command(OUTPUT "${_GC_OUTPUT}"
COMMAND "${CMAKE_COMMAND}"
"-DINPUT=${_GC_INPUT}"
"-DOUTPUT=${_GC_OUTPUT}"
-P "${CMAKE_CURRENT_BINARY_DIR}/scripts/genchk.cmake"
DEPENDS "${_GC_INPUT}" ${_GC_DEPENDS}
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
endfunction()
# Generate .out from .c with awk
# generate_out(INPUT inputfile OUTPUT outputfile [DEPENDS dep1 [dep2...]])
function(generate_out)
set(options)
set(oneValueArgs INPUT OUTPUT)
set(multiValueArgs DEPENDS)
cmake_parse_arguments(_GO "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(NOT _GO_INPUT)
message(FATAL_ERROR "generate_out: Missing INPUT argument")
endif()
if(NOT _GO_OUTPUT)
message(FATAL_ERROR "generate_out: Missing OUTPUT argument")
endif()
add_custom_command(OUTPUT "${_GO_OUTPUT}"
COMMAND "${CMAKE_COMMAND}"
"-DINPUT=${_GO_INPUT}"
"-DOUTPUT=${_GO_OUTPUT}"
-P "${CMAKE_CURRENT_BINARY_DIR}/scripts/genout.cmake"
DEPENDS "${_GO_INPUT}" ${_GO_DEPENDS}
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
endfunction()
# Generate specific source file with awk
# generate_source(OUTPUT outputfile [DEPENDS dep1 [dep2...]])
function(generate_source)
set(options)
set(oneValueArgs OUTPUT)
set(multiValueArgs DEPENDS)
cmake_parse_arguments(_GSO "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(NOT _GSO_OUTPUT)
message(FATAL_ERROR "generate_source: Missing OUTPUT argument")
endif()
add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${_GSO_OUTPUT}"
COMMAND "${CMAKE_COMMAND}"
"-DOUTPUT=${_GSO_OUTPUT}"
-P "${CMAKE_CURRENT_BINARY_DIR}/scripts/gensrc.cmake"
DEPENDS ${_GSO_DEPENDS}
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
endfunction()
# Copy file
# generate_copy(INPUT inputfile OUTPUT outputfile [DEPENDS dep1 [dep2...]])
function(generate_copy)
set(options)
set(oneValueArgs INPUT OUTPUT)
set(multiValueArgs DEPENDS)
cmake_parse_arguments(_GCO "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(NOT _GCO_INPUT)
message(FATAL_ERROR "generate_copy: Missing INPUT argument")
endif()
if(NOT _GCO_OUTPUT)
message(FATAL_ERROR "generate_copy: Missing OUTPUT argument")
endif()
add_custom_command(OUTPUT "${_GCO_OUTPUT}"
COMMAND "${CMAKE_COMMAND}"
-E remove "${_GCO_OUTPUT}"
COMMAND "${CMAKE_COMMAND}"
-E copy "${_GCO_INPUT}" "${_GCO_OUTPUT}"
DEPENDS "${source}" ${_GCO_DEPENDS})
endfunction()
# Generate scripts/pnglibconf.h
generate_source(OUTPUT "scripts/pnglibconf.c"
DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.dfa"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/options.awk"
"${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h")
add_custom_target(png_scripts_pnglibconf_c
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c")
# Generate pnglibconf.c
generate_source(OUTPUT "pnglibconf.c"
DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.dfa"
"${CMAKE_CURRENT_BINARY_DIR}/scripts/options.awk"
"${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h")
add_custom_target(pnglibconf_c
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c")
if(PNG_PREFIX)
set(PNGLIBCONF_H_EXTRA_DEPENDS
"${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"
DEPENDS pnglibconf_c)
add_custom_target(pnglibconf_out
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out")
# Generate pnglibconf.h
generate_source(OUTPUT "pnglibconf.h"
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out" pnglibconf_out
${PNGLIBCONF_H_EXTRA_DEPENDS})
add_custom_target(pnglibconf_h
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h")
generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/intprefix.c"
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out"
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" pnglibconf_h)
add_custom_target(png_scripts_intprefix_out
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out")
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"
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out" pnglibconf_out)
add_custom_target(png_scripts_prefix_out
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out")
# Generate pngprefix.h
generate_source(OUTPUT "pngprefix.h"
DEPENDS ${PNGPREFIX_H_EXTRA_DEPENDS})
add_custom_target(pngprefix_h
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h")
generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/sym.c"
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out"
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" pnglibconf_h)
add_custom_target(png_scripts_sym_out
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out")
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"
"${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt")
add_custom_target(png_scripts_symbols_out
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out")
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"
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" pnglibconf_h)
add_custom_target(png_scripts_vers_out
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out")
generate_chk(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out"
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk"
DEPENDS png_scripts_symbols_out
"${CMAKE_CURRENT_BINARY_DIR}/scripts/checksym.awk"
"${CMAKE_CURRENT_SOURCE_DIR}/scripts/symbols.def")
add_custom_target(png_scripts_symbols_chk
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk")
generate_copy(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out"
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym"
DEPENDS png_scripts_sym_out)
generate_copy(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out"
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers"
DEPENDS png_scripts_vers_out)
add_custom_target(png_genvers
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers")
add_custom_target(png_gensym
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym")
add_custom_target(png_genprebuilt
COMMAND "${CMAKE_COMMAND}"
"-DOUTPUT=scripts/pnglibconf.h.prebuilt"
-P "${CMAKE_CURRENT_BINARY_DIR}/scripts/gensrc.cmake"
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
# A single target handles generation of all generated files.
add_custom_target(png_genfiles
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym" png_gensym
"${CMAKE_CURRENT_BINARY_DIR}/libpng.vers" png_genvers
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c" pnglibconf_c
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" pnglibconf_h
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out" pnglibconf_out
"${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h" pngprefix_h
"${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out" png_scripts_intprefix_out
"${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c" png_scripts_pnglibconf_c
"${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out" png_scripts_prefix_out
"${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out" png_scripts_sym_out
"${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk" png_scripts_symbols_chk
"${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out" png_scripts_symbols_out
"${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out" png_scripts_vers_out)
endif(NOT AWK OR ANDROID OR IOS)
# List the source code files.
set(libpng_public_hdrs
png.h
pngconf.h
"${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
)
set(libpng_private_hdrs
pngpriv.h
pngdebug.h
pnginfo.h
pngstruct.h
)
if(AWK AND NOT ANDROID AND NOT IOS)
list(APPEND libpng_private_hdrs "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h")
endif()
set(libpng_sources
${libpng_public_hdrs}
${libpng_private_hdrs}
png.c
pngerror.c
pngget.c
pngmem.c
pngpread.c
pngread.c
pngrio.c
pngrtran.c
pngrutil.c
pngset.c
pngtrans.c
pngwio.c
pngwrite.c
pngwtran.c
pngwutil.c
${libpng_arm_sources}
${libpng_intel_sources}
${libpng_mips_sources}
${libpng_powerpc_sources}
)
set(pngtest_sources
pngtest.c
)
set(pngvalid_sources
contrib/libtests/pngvalid.c
)
set(pngstest_sources
contrib/libtests/pngstest.c
)
set(pngunknown_sources
contrib/libtests/pngunknown.c
)
set(pngimage_sources
contrib/libtests/pngimage.c
)
set(pngfix_sources
contrib/tools/pngfix.c
)
set(png_fix_itxt_sources
contrib/tools/png-fix-itxt.c
)
if(MSVC OR (WIN32 AND (CMAKE_C_COMPILER_ID MATCHES ".*Clang")))
add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
endif()
if(PNG_DEBUG)
add_definitions(-DPNG_DEBUG)
endif()
# Now build our targets.
include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${ZLIB_INCLUDE_DIRS})
# Initialize the list of libpng library targets.
set(PNG_LIBRARY_TARGETS "")
# Initialize the libpng library file names.
if(UNIX
OR (WIN32 AND NOT "${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(WIN32)
set_target_properties(png_shared PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
endif()
target_link_libraries(png_shared ${ZLIB_LIBRARIES} ${M_LIBRARY})
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_link_libraries(png_static ${ZLIB_LIBRARIES} ${M_LIBRARY})
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")
target_link_libraries(png_framework ${ZLIB_LIBRARIES} ${M_LIBRARY})
endif()
if(NOT PNG_LIBRARY_TARGETS)
message(SEND_ERROR "No library variant selected to build. "
"Please enable at least one of the following options: "
"PNG_SHARED, PNG_STATIC, PNG_FRAMEWORK")
endif()
function(png_add_test)
set(options)
set(oneValueArgs NAME COMMAND)
set(multiValueArgs OPTIONS FILES)
cmake_parse_arguments(_PAT "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(NOT _PAT_NAME)
message(FATAL_ERROR "png_add_test: Missing NAME argument")
endif()
if(NOT _PAT_COMMAND)
message(FATAL_ERROR "png_add_test: Missing COMMAND argument")
endif()
set(TEST_OPTIONS "${_PAT_OPTIONS}")
set(TEST_FILES "${_PAT_FILES}")
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/test.cmake.in"
"${CMAKE_CURRENT_BINARY_DIR}/tests/${_PAT_NAME}.cmake"
@ONLY)
add_test(NAME "${_PAT_NAME}"
COMMAND "${CMAKE_COMMAND}"
"-DLIBPNG=$<TARGET_FILE:png_shared>"
"-DTEST_COMMAND=$<TARGET_FILE:${_PAT_COMMAND}>"
-P "${CMAKE_CURRENT_BINARY_DIR}/tests/${_PAT_NAME}.cmake")
endfunction()
if(PNG_TESTS AND PNG_SHARED)
# Find test PNG files by globbing, but sort lists to ensure
# consistency between different filesystems.
file(GLOB PNGSUITE_PNGS "${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/*.png")
list(SORT PNGSUITE_PNGS)
file(GLOB TEST_PNGS "${CMAKE_CURRENT_SOURCE_DIR}/contrib/testpngs/*.png")
list(SORT TEST_PNGS)
set(PNGTEST_PNG "${CMAKE_CURRENT_SOURCE_DIR}/pngtest.png")
add_executable(pngtest ${pngtest_sources})
target_link_libraries(pngtest png_shared)
png_add_test(NAME pngtest
COMMAND pngtest
FILES "${PNGTEST_PNG}")
add_executable(pngvalid ${pngvalid_sources})
target_link_libraries(pngvalid 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 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 ${pngunknown_sources})
target_link_libraries(pngunknown png_shared)
png_add_test(NAME pngunknown-discard
COMMAND pngunknown
OPTIONS --strict default=discard
FILES "${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 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_EXECUTABLES)
add_executable(pngfix ${pngfix_sources})
target_link_libraries(pngfix png_shared)
set(PNG_BIN_TARGETS pngfix)
add_executable(png-fix-itxt ${png_fix_itxt_sources})
target_link_libraries(png-fix-itxt ${ZLIB_LIBRARIES} ${M_LIBRARY})
list(APPEND PNG_BIN_TARGETS png-fix-itxt)
endif()
# Create a symlink from src to dest (if possible), or, alternatively,
# copy src to dest if different.
function(create_symlink DEST_FILE)
cmake_parse_arguments(_SYM "" "FILE;TARGET" "" ${ARGN})
if(NOT _SYM_FILE AND NOT _SYM_TARGET)
message(FATAL_ERROR "create_symlink: Missing FILE or TARGET argument")
endif()
if(_SYM_FILE AND _SYM_TARGET)
message(FATAL_ERROR "create_symlink: "
"The arguments FILE (${_SYM_FILE}) and TARGET (${_SYM_TARGET}) "
"are mutually-exclusive")
endif()
if(_SYM_FILE)
# If we don't need to symlink something that's coming from a build target,
# we can go ahead and symlink/copy at configure time.
if(CMAKE_HOST_WIN32 AND NOT CYGWIN)
execute_process(COMMAND "${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
$<TARGET_LINKER_FILE_NAME:${_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/genchk.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/scripts/genchk.cmake
@ONLY)
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/genout.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/scripts/genout.cmake
@ONLY)
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/gensrc.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/scripts/gensrc.cmake
@ONLY)
# libpng is a library so default to 'lib'
if(NOT DEFINED CMAKE_INSTALL_LIBDIR)
set(CMAKE_INSTALL_LIBDIR lib)
endif()
# Create pkgconfig files.
# We use the same files like ./configure, so we have to set its vars.
# Only do this on Windows for Cygwin - the files don't make much sense
# outside of a UNIX look-alike.
if(NOT WIN32 OR CYGWIN OR MINGW)
set(prefix ${CMAKE_INSTALL_PREFIX})
set(exec_prefix ${CMAKE_INSTALL_PREFIX})
set(libdir ${CMAKE_INSTALL_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 bin
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
FRAMEWORK DESTINATION ${CMAKE_INSTALL_LIBDIR})
if(PNG_SHARED)
# Create a symlink for libpng.dll.a => libpng16.dll.a on Cygwin
if(CYGWIN OR MINGW)
create_symlink(libpng${CMAKE_IMPORT_LIBRARY_SUFFIX} TARGET png_shared)
install(FILES $<TARGET_LINKER_FILE_DIR:png_shared>/libpng${CMAKE_IMPORT_LIBRARY_SUFFIX}
DESTINATION ${CMAKE_INSTALL_LIBDIR})
endif()
if(NOT WIN32)
create_symlink(libpng${CMAKE_SHARED_LIBRARY_SUFFIX} TARGET png_shared)
install(FILES $<TARGET_LINKER_FILE_DIR:png_shared>/libpng${CMAKE_SHARED_LIBRARY_SUFFIX}