forked from libsdl-org/SDL
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathCMakeLists.txt
3356 lines (3027 loc) · 115 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
if(${CMAKE_CURRENT_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_BINARY_DIR})
message(FATAL_ERROR "Prevented in-tree build. Please create a build directory outside of the SDL source code and run \"cmake -S ${CMAKE_SOURCE_DIR} -B .\" from there")
endif()
cmake_minimum_required(VERSION 3.0.0)
project(SDL2 C CXX)
if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
set(SDL2_SUBPROJECT OFF)
else()
set(SDL2_SUBPROJECT ON)
endif()
if (HAIKU)
set(LINKER_LANGUAGE CXX)
endif()
set(EXTRA_LIBS)
set(EXTRA_LDFLAGS)
# This is a virtual "library" that just exists to collect up compiler and
# linker options that used to be global to this CMake project. When you
# specify it as part of a real library's target_link_libraries(), that
# library will also gain all those build options too. This is meant to
# modularize old calls to the global add_definitions and include_directories,
# etc. See https://github.com/libsdl-org/SDL/issues/4150
add_library(sdl-build-options INTERFACE)
if(WINDOWS_STORE)
cmake_minimum_required(VERSION 3.11.0)
target_compile_definitions(sdl-build-options INTERFACE "-DSDL_BUILDING_WINRT=1")
target_compile_options(sdl-build-options INTERFACE "-ZW")
endif()
# Build in parallel under Visual Studio. Not enabled by default.
if(MSVC)
target_compile_options(sdl-build-options INTERFACE "/MP")
endif(MSVC)
# CMake 3.0 expands the "if(${A})" in "set(OFF 1);set(A OFF);if(${A})" to "if(1)"
# CMake 3.24+ emits a warning when not set.
unset(OFF)
unset(ON)
if(POLICY CMP0054)
cmake_policy(SET CMP0054 NEW)
endif()
# !!! FIXME: this should probably do "MACOSX_RPATH ON" as a target property
# !!! FIXME: for the SDL2 shared library (so you get an
# !!! FIXME: install_name ("soname") of "@rpath/libSDL-whatever.dylib"
# !!! FIXME: instead of "/usr/local/lib/libSDL-whatever.dylib"), but I'm
# !!! FIXME: punting for now and leaving the existing behavior. Until this
# !!! FIXME: properly resolved, this line silences a warning in CMake 3.0+.
# !!! FIXME: remove it and this comment entirely once the problem is
# !!! FIXME: properly resolved.
#cmake_policy(SET CMP0042 OLD)
include(CheckLibraryExists)
include(CheckIncludeFiles)
include(CheckIncludeFile)
include(CheckSymbolExists)
include(CheckCSourceCompiles)
include(CheckCSourceRuns)
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
include(CheckStructHasMember)
include(CMakeDependentOption)
include(CMakePushCheckState)
include(FindPkgConfig)
include(GNUInstallDirs)
list(APPEND CMAKE_MODULE_PATH "${SDL2_SOURCE_DIR}/cmake")
include(${SDL2_SOURCE_DIR}/cmake/macros.cmake)
include(${SDL2_SOURCE_DIR}/cmake/sdlchecks.cmake)
# Enable large file support on 32-bit glibc, so that we can access files
# with large inode numbers
check_symbol_exists("__GLIBC__" "stdlib.h" LIBC_IS_GLIBC)
if (LIBC_IS_GLIBC AND CMAKE_SIZEOF_VOID_P EQUAL 4)
add_definitions(-D_FILE_OFFSET_BITS=64)
endif()
# See docs/release_checklist.md
set(SDL_MAJOR_VERSION 2)
set(SDL_MINOR_VERSION 25)
set(SDL_MICRO_VERSION 0)
set(SDL_VERSION "${SDL_MAJOR_VERSION}.${SDL_MINOR_VERSION}.${SDL_MICRO_VERSION}")
# Set defaults preventing destination file conflicts
set(SDL_CMAKE_DEBUG_POSTFIX "d"
CACHE STRING "Name suffix for debug builds")
mark_as_advanced(CMAKE_IMPORT_LIBRARY_SUFFIX SDL_CMAKE_DEBUG_POSTFIX)
# Calculate a libtool-like version number
math(EXPR SDL_BINARY_AGE "${SDL_MINOR_VERSION} * 100 + ${SDL_MICRO_VERSION}")
if(SDL_MINOR_VERSION MATCHES "[02468]$")
# Stable branch, 2.24.1 -> libSDL2-2.0.so.0.2400.1
set(SDL_INTERFACE_AGE ${SDL_MICRO_VERSION})
else()
# Development branch, 2.23.1 -> libSDL2-2.0.so.0.2301.0
set(SDL_INTERFACE_AGE 0)
endif()
# Increment this if there is an incompatible change - but if that happens,
# we should rename the library from SDL2 to SDL3, at which point this would
# reset to 0 anyway.
set(LT_MAJOR "0")
math(EXPR LT_AGE "${SDL_BINARY_AGE} - ${SDL_INTERFACE_AGE}")
math(EXPR LT_CURRENT "${LT_MAJOR} + ${LT_AGE}")
set(LT_REVISION "${SDL_INTERFACE_AGE}")
# For historical reasons, the library name redundantly includes the major
# version twice: libSDL2-2.0.so.0.
# TODO: in SDL 3, set the OUTPUT_NAME to plain SDL3, which will simplify
# it to libSDL3.so.0
set(LT_RELEASE "2.0")
set(LT_VERSION "${LT_MAJOR}.${LT_AGE}.${LT_REVISION}")
# The following should match the versions in the Xcode project file.
# Each version is 1 higher than you might expect, for compatibility
# with libtool: macOS ABI versioning is 1-based, unlike other platforms
# which are normally 0-based.
math(EXPR DYLIB_CURRENT_VERSION_MAJOR "${LT_MAJOR} + ${LT_AGE} + 1")
math(EXPR DYLIB_CURRENT_VERSION_MINOR "${LT_REVISION}")
set(DYLIB_CURRENT_VERSION "${DYLIB_CURRENT_VERSION_MAJOR}.${DYLIB_CURRENT_VERSION_MINOR}.0")
set(DYLIB_COMPATIBILITY_VERSION "${DYLIB_CURRENT_VERSION_MAJOR}.0.0")
# This list holds all generated headers.
# To avoid generating them twice, these are added to a dummy target on which all sdl targets depend.
set(SDL_GENERATED_HEADERS)
#message(STATUS "${LT_VERSION} :: ${LT_AGE} :: ${LT_REVISION} :: ${LT_CURRENT} :: ${LT_RELEASE}")
# General settings & flags
set(LIBRARY_OUTPUT_DIRECTORY "build")
# Check for 64 or 32 bit
set(SIZEOF_VOIDP ${CMAKE_SIZEOF_VOID_P})
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(ARCH_64 TRUE)
set(PROCESSOR_ARCH "x64")
else()
set(ARCH_64 FALSE)
set(PROCESSOR_ARCH "x86")
endif()
set(LIBNAME SDL2)
if(NOT LIBTYPE)
set(LIBTYPE SHARED)
endif()
# Get the platform
if(WIN32)
if(NOT WINDOWS)
set(WINDOWS TRUE)
endif()
elseif(UNIX AND NOT APPLE)
if(CMAKE_SYSTEM_NAME MATCHES ".*Linux")
set(LINUX TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES "kFreeBSD.*")
set(FREEBSD TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES "kNetBSD.*|NetBSD.*")
set(NETBSD TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES "kOpenBSD.*|OpenBSD.*")
set(OPENBSD TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES ".*GNU.*")
set(GNU TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES ".*BSDI.*")
set(BSDI TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES "DragonFly.*|FreeBSD")
set(FREEBSD TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES "SYSV5.*")
set(SYSV5 TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES "Solaris.*|SunOS.*")
set(SOLARIS TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES "HP-UX.*")
set(HPUX TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES "AIX.*")
set(AIX TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES "Minix.*")
set(MINIX TRUE)
endif()
elseif(APPLE)
if(CMAKE_SYSTEM_NAME MATCHES ".*Darwin.*")
set(DARWIN TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES ".*MacOS.*")
set(MACOSX TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES ".*tvOS.*")
set(TVOS TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES ".*iOS.*")
# !!! FIXME: remove the version check when we start requiring >= 3.14.0
if(CMAKE_VERSION VERSION_LESS 3.14)
set(IOS TRUE)
endif()
endif()
elseif(CMAKE_SYSTEM_NAME MATCHES "BeOS.*")
message_error("BeOS support has been removed as of SDL 2.0.2.")
elseif(CMAKE_SYSTEM_NAME MATCHES "Haiku.*")
set(HAIKU TRUE)
endif()
# Don't mistake osx for unix
if(UNIX AND NOT ANDROID AND NOT APPLE AND NOT RISCOS)
set(UNIX_SYS ON)
else()
set(UNIX_SYS OFF)
endif()
if(UNIX OR APPLE)
set(UNIX_OR_MAC_SYS ON)
else()
set(UNIX_OR_MAC_SYS OFF)
endif()
# Emscripten pthreads work, but you need to have a non-pthread fallback build
# for systems without support. It's not currently enough to not use
# pthread functions in a pthread-build; it won't start up on unsupported
# browsers. As such, you have to explicitly enable it on Emscripten builds
# for the time being. This default with change to ON once this becomes
# commonly supported in browsers or the Emscripten teams makes a single
# binary work everywhere.
if (UNIX_OR_MAC_SYS AND NOT EMSCRIPTEN)
set(SDL_PTHREADS_ENABLED_BY_DEFAULT ON)
else()
set(SDL_PTHREADS_ENABLED_BY_DEFAULT OFF)
endif()
if(UNIX_SYS OR ANDROID)
set(SDL_CLOCK_GETTIME_ENABLED_BY_DEFAULT ON)
else()
set(SDL_CLOCK_GETTIME_ENABLED_BY_DEFAULT OFF)
endif()
# The hidraw support doesn't catch Xbox, PS4 and Nintendo controllers,
# so we'll just use libusb when it's available. libusb does not support iOS,
# so we default to yes on iOS.
# TODO: Windows can support libusb, the hid.c file just depends on Unix APIs
if((WINDOWS AND NOT WINDOWS_STORE) OR IOS OR TVOS OR ANDROID)
set(HIDAPI_SKIP_LIBUSB TRUE)
else()
set(HIDAPI_SKIP_LIBUSB FALSE)
endif()
# On the other hand, *BSD specifically uses libusb only, so we make a special
# case just for them.
if(FREEBSD OR NETBSD OR OPENBSD OR BSDI)
set(HIDAPI_ONLY_LIBUSB TRUE)
else()
set(HIDAPI_ONLY_LIBUSB FALSE)
endif()
# Compiler info
if(CMAKE_C_COMPILER_ID MATCHES "Clang")
set(USE_CLANG TRUE)
set(OPT_DEF_ASM TRUE)
# Visual Studio 2019 v16.2 added support for Clang/LLVM.
# Check if a Visual Studio project is being generated with the Clang toolset.
if(MSVC)
set(MSVC_CLANG TRUE)
endif()
elseif(CMAKE_COMPILER_IS_GNUCC)
set(USE_GCC TRUE)
set(OPT_DEF_ASM TRUE)
elseif(MSVC_VERSION GREATER 1400) # VisualStudio 8.0+
set(OPT_DEF_ASM TRUE)
#set(CMAKE_C_FLAGS "/ZI /WX- /
else()
set(OPT_DEF_ASM FALSE)
endif()
if(USE_GCC OR USE_CLANG)
set(OPT_DEF_GCC_ATOMICS ON)
endif()
# Default option knobs
if(APPLE OR ARCH_64 OR MSVC_CLANG)
if(NOT "${CMAKE_OSX_ARCHITECTURES}" MATCHES "arm")
set(OPT_DEF_SSEMATH ON)
endif()
endif()
if(UNIX OR MINGW OR MSYS OR (USE_CLANG AND NOT WINDOWS) OR VITA OR PSP OR PS2)
set(OPT_DEF_LIBC ON)
endif()
if(NOT ("$ENV{CFLAGS}" STREQUAL ""))
if(CMAKE_VERSION VERSION_LESS 3.11.0)
message(WARNING "SDL's CMakeLists.txt no longer checks the CFLAGS environment.")
message(WARNING "Please use CMake's CMAKE_C_FLAGS and CMAKE_BUILD_TYPE variables directly.")
message(WARNING "Or upgrade to CMake >= 3.11.0, which respects the CFLAGS environment var.")
endif()
endif()
if(MSVC)
option(SDL_FORCE_STATIC_VCRT "Force /MT for static VC runtimes" OFF)
if(SDL_FORCE_STATIC_VCRT)
foreach(flag_var
CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
if(${flag_var} MATCHES "/MD")
string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
endif()
endforeach()
endif()
if(NOT SDL_LIBC)
# Make sure /RTC1 is disabled, otherwise it will use functions from the CRT
foreach(flag_var
CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
string(REGEX REPLACE "/RTC(su|[1su])" "" ${flag_var} "${${flag_var}}")
endforeach(flag_var)
endif()
if(MSVC_CLANG)
# clang-cl treats /W4 as '-Wall -Wextra' -- we don't need -Wextra
foreach(flag_var
CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
string(REGEX REPLACE "/W4" "/W3" ${flag_var} "${${flag_var}}")
endforeach(flag_var)
endif()
endif()
# Those are used for pkg-config and friends, so that the sdl2.pc, sdl2-config,
# etc. are created correctly.
set(SDL_LIBS "-lSDL2")
set(SDL_CFLAGS )
# When building shared lib for Windows with MinGW,
# avoid the DLL having a "lib" prefix
if(WINDOWS)
set(CMAKE_SHARED_LIBRARY_PREFIX "")
endif()
# Emscripten toolchain has a nonempty default value for this, and the checks
# in this file need to change that, so remember the original value, and
# restore back to that afterwards. For check_function_exists() to work in
# Emscripten, this value must be at its default value.
set(ORIG_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
if(CYGWIN)
# We build SDL on cygwin without the UNIX emulation layer
target_include_directories(sdl-build-options INTERFACE "/usr/include/mingw")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -mno-cygwin")
check_c_source_compiles("int main(int argc, char **argv) { return 0; }"
HAVE_GCC_NO_CYGWIN)
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
if(HAVE_GCC_NO_CYGWIN)
list(APPEND EXTRA_LDFLAGS_BUILD "-mno-cygwin")
list(APPEND SDL_LIBS "-mno-cygwin")
endif()
list(APPEND SDL_CFLAGS "-I/usr/include/mingw")
endif()
# General includes
target_compile_definitions(sdl-build-options INTERFACE "-DUSING_GENERATED_CONFIG_H")
target_include_directories(sdl-build-options BEFORE INTERFACE "${SDL2_BINARY_DIR}/include" "${SDL2_BINARY_DIR}/include-config-$<LOWER_CASE:$<CONFIG>>")
# Note: The clang toolset for Visual Studio does not support the '-idirafter' option.
if(USE_GCC OR (USE_CLANG AND NOT MSVC_CLANG))
# !!! FIXME: do we _need_ to mess with CMAKE_C_FLAGS here?
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -idirafter \"${SDL2_SOURCE_DIR}/src/video/khronos\"")
else()
target_include_directories(sdl-build-options INTERFACE "${SDL2_SOURCE_DIR}/src/video/khronos")
endif()
# All these ENABLED_BY_DEFAULT vars will default to ON if not specified, so
# you only need to have a platform override them if they are disabling.
set(OPT_DEF_ASM TRUE)
if(EMSCRIPTEN)
# Set up default values for the currently supported set of subsystems:
# Emscripten/Javascript does not have assembly support, a dynamic library
# loading architecture, or low-level CPU inspection.
# SDL_THREADS_ENABLED_BY_DEFAULT now defaults to ON, but pthread support might be disabled by default.
# !!! FIXME: most of these subsystems should default to ON if there are dummy implementations to be used.
set(OPT_DEF_ASM FALSE)
set(SDL_SHARED_ENABLED_BY_DEFAULT OFF)
set(SDL_ATOMIC_ENABLED_BY_DEFAULT OFF)
set(SDL_LOADSO_ENABLED_BY_DEFAULT OFF)
set(SDL_CPUINFO_ENABLED_BY_DEFAULT OFF)
set(SDL_TEST_ENABLED_BY_DEFAULT OFF)
endif()
if(VITA OR PSP OR PS2)
set(SDL_SHARED_ENABLED_BY_DEFAULT OFF)
set(SDL_LOADSO_ENABLED_BY_DEFAULT OFF)
endif()
# When defined, respect CMake's BUILD_SHARED_LIBS setting:
set(SDL_STATIC_ENABLED_BY_DEFAULT ON)
if (NOT DEFINED SDL_SHARED_ENABLED_BY_DEFAULT)
# ...unless decided already (as for EMSCRIPTEN)
set(SDL_SHARED_ENABLED_BY_DEFAULT OFF)
if (NOT DEFINED BUILD_SHARED_LIBS)
# No preference? Build both, just like the AC/AM configure
set(SDL_SHARED_ENABLED_BY_DEFAULT ON)
elseif (BUILD_SHARED_LIBS)
# In this case, we assume the user wants a shared lib and don't build
# the static one
set(SDL_SHARED_ENABLED_BY_DEFAULT ON)
set(SDL_STATIC_ENABLED_BY_DEFAULT OFF)
endif()
endif()
if (NOT DEFINED SDL_TEST_ENABLED_BY_DEFAULT)
set(SDL_TEST_ENABLED_BY_DEFAULT ON)
endif()
set(LONGESTOPTIONNAME 0) # set_option and friends will change this.
set(SDL_SUBSYSTEMS
Atomic Audio Video Render Events Joystick Haptic Hidapi Power Threads Timers
File Loadso CPUinfo Filesystem Sensor Locale Misc)
foreach(_SUB ${SDL_SUBSYSTEMS})
string(TOUPPER ${_SUB} _OPT)
if (NOT DEFINED SDL_${_OPT}_ENABLED_BY_DEFAULT)
set(SDL_${_OPT}_ENABLED_BY_DEFAULT ON)
endif()
option(SDL_${_OPT} "Enable the ${_SUB} subsystem" ${SDL_${_OPT}_ENABLED_BY_DEFAULT})
endforeach()
# Allow some projects to be built conditionally.
set_option(SDL2_DISABLE_SDL2MAIN "Disable building/installation of SDL2main" OFF)
set_option(SDL2_DISABLE_INSTALL "Disable installation of SDL2" ${SDL2_SUBPROJECT})
set_option(SDL2_DISABLE_UNINSTALL "Disable uninstallation of SDL2" OFF)
option_string(SDL_ASSERTIONS "Enable internal sanity checks (auto/disabled/release/enabled/paranoid)" "auto")
#set_option(SDL_DEPENDENCY_TRACKING "Use gcc -MMD -MT dependency tracking" ON)
set_option(SDL_LIBC "Use the system C library" ${OPT_DEF_LIBC})
set_option(SDL_GCC_ATOMICS "Use gcc builtin atomics" ${OPT_DEF_GCC_ATOMICS})
set_option(SDL_ASSEMBLY "Enable assembly routines" ${OPT_DEF_ASM})
set_option(SDL_SSEMATH "Allow GCC to use SSE floating point math" ${OPT_DEF_SSEMATH})
set_option(SDL_MMX "Use MMX assembly routines" ${OPT_DEF_ASM})
set_option(SDL_3DNOW "Use 3Dnow! MMX assembly routines" ${OPT_DEF_ASM})
set_option(SDL_SSE "Use SSE assembly routines" ${OPT_DEF_ASM})
set_option(SDL_SSE2 "Use SSE2 assembly routines" ${OPT_DEF_SSEMATH})
set_option(SDL_SSE3 "Use SSE3 assembly routines" ${OPT_DEF_SSEMATH})
set_option(SDL_ALTIVEC "Use Altivec assembly routines" ${OPT_DEF_ASM})
set_option(SDL_ARMSIMD "use SIMD assembly blitters on ARM" OFF)
set_option(SDL_ARMNEON "use NEON assembly blitters on ARM" OFF)
dep_option(SDL_DBUS "Enable D-Bus support" ON ${UNIX_SYS} OFF)
set_option(SDL_DISKAUDIO "Support the disk writer audio driver" ON)
set_option(SDL_DUMMYAUDIO "Support the dummy audio driver" ON)
set_option(SDL_DIRECTFB "Use DirectFB video driver" OFF)
dep_option(SDL_DIRECTFB_SHARED "Dynamically load directfb support" ON "SDL_DIRECTFB" OFF)
set_option(SDL_DUMMYVIDEO "Use dummy video driver" ON)
dep_option(SDL_IBUS "Enable IBus support" ON ${UNIX_SYS} OFF)
set_option(SDL_OPENGL "Include OpenGL support" ON)
set_option(SDL_OPENGLES "Include OpenGL ES support" ON)
set_option(SDL_PTHREADS "Use POSIX threads for multi-threading" ${SDL_PTHREADS_ENABLED_BY_DEFAULT})
dep_option(SDL_PTHREADS_SEM "Use pthread semaphores" ON "SDL_PTHREADS" OFF)
dep_option(SDL_OSS "Support the OSS audio API" ON "UNIX_SYS OR RISCOS" OFF)
set_option(SDL_ALSA "Support the ALSA audio API" ${UNIX_SYS})
dep_option(SDL_ALSA_SHARED "Dynamically load ALSA audio support" ON "SDL_ALSA" OFF)
set_option(SDL_JACK "Support the JACK audio API" ${UNIX_SYS})
dep_option(SDL_JACK_SHARED "Dynamically load JACK audio support" ON "SDL_JACK" OFF)
set_option(SDL_ESD "Support the Enlightened Sound Daemon" ${UNIX_SYS})
dep_option(SDL_ESD_SHARED "Dynamically load ESD audio support" ON "SDL_ESD" OFF)
set_option(SDL_PIPEWIRE "Use Pipewire audio" ${UNIX_SYS})
dep_option(SDL_PIPEWIRE_SHARED "Dynamically load Pipewire support" ON "SDL_PIPEWIRE" OFF)
set_option(SDL_PULSEAUDIO "Use PulseAudio" ${UNIX_SYS})
dep_option(SDL_PULSEAUDIO_SHARED "Dynamically load PulseAudio support" ON "SDL_PULSEAUDIO" OFF)
set_option(SDL_ARTS "Support the Analog Real Time Synthesizer" ${UNIX_SYS})
dep_option(SDL_ARTS_SHARED "Dynamically load aRts audio support" ON "SDL_ARTS" OFF)
set_option(SDL_NAS "Support the NAS audio API" ${UNIX_SYS})
dep_option(SDL_NAS_SHARED "Dynamically load NAS audio support" ON "SDL_NAS" OFF)
set_option(SDL_SNDIO "Support the sndio audio API" ${UNIX_SYS})
dep_option(SDL_SNDIO_SHARED "Dynamically load the sndio audio API" ON "SDL_SNDIO" OFF)
set_option(SDL_FUSIONSOUND "Use FusionSound audio driver" OFF)
dep_option(SDL_FUSIONSOUND_SHARED "Dynamically load fusionsound audio support" ON "SDL_FUSIONSOUND" OFF)
set_option(SDL_LIBSAMPLERATE "Use libsamplerate for audio rate conversion" ${UNIX_SYS})
dep_option(SDL_LIBSAMPLERATE_SHARED "Dynamically load libsamplerate" ON "SDL_LIBSAMPLERATE" OFF)
set_option(SDL_RPATH "Use an rpath when linking SDL" ${UNIX_SYS})
set_option(SDL_CLOCK_GETTIME "Use clock_gettime() instead of gettimeofday()" ${SDL_CLOCK_GETTIME_ENABLED_BY_DEFAULT})
set_option(SDL_X11 "Use X11 video driver" ${UNIX_SYS})
dep_option(SDL_X11_SHARED "Dynamically load X11 support" ON "SDL_X11" OFF)
set(SDL_X11_OPTIONS Xcursor Xdbe XInput Xfixes Xrandr Xscrnsaver XShape)
foreach(_SUB ${SDL_X11_OPTIONS})
string(TOUPPER "SDL_X11_${_SUB}" _OPT)
dep_option(${_OPT} "Enable ${_SUB} support" ON "SDL_X11" OFF)
endforeach()
set_option(SDL_WAYLAND "Use Wayland video driver" ${UNIX_SYS})
dep_option(SDL_WAYLAND_SHARED "Dynamically load Wayland support" ON "SDL_WAYLAND" OFF)
dep_option(SDL_WAYLAND_LIBDECOR "Use client-side window decorations on Wayland" ON "SDL_WAYLAND" OFF)
dep_option(SDL_WAYLAND_LIBDECOR_SHARED "Dynamically load libdecor support" ON "SDL_WAYLAND_LIBDECOR;SDL_WAYLAND_SHARED" OFF)
dep_option(SDL_WAYLAND_QT_TOUCH "QtWayland server support for Wayland video driver" ON "SDL_WAYLAND" OFF)
set_option(SDL_RPI "Use Raspberry Pi video driver" ${UNIX_SYS})
set_option(SDL_COCOA "Use Cocoa video driver" ${APPLE})
set_option(SDL_DIRECTX "Use DirectX for Windows audio/video" ${WINDOWS})
set_option(SDL_XINPUT "Use Xinput for Windows" ${WINDOWS})
set_option(SDL_WASAPI "Use the Windows WASAPI audio driver" ${WINDOWS})
set_option(SDL_RENDER_D3D "Enable the Direct3D render driver" ${WINDOWS})
set_option(SDL_RENDER_METAL "Enable the Metal render driver" ${APPLE})
set_option(SDL_VIVANTE "Use Vivante EGL video driver" ${UNIX_SYS})
dep_option(SDL_VULKAN "Enable Vulkan support" ON "ANDROID OR APPLE OR LINUX OR WINDOWS" OFF)
set_option(SDL_METAL "Enable Metal support" ${APPLE})
set_option(SDL_KMSDRM "Use KMS DRM video driver" ${UNIX_SYS})
dep_option(SDL_KMSDRM_SHARED "Dynamically load KMS DRM support" ON "SDL_KMSDRM" OFF)
set_option(SDL_OFFSCREEN "Use offscreen video driver" ON)
option_string(SDL_BACKGROUNDING_SIGNAL "number to use for magic backgrounding signal or 'OFF'" OFF)
option_string(SDL_FOREGROUNDING_SIGNAL "number to use for magic foregrounding signal or 'OFF'" OFF)
set_option(SDL_HIDAPI "Enable the HIDAPI subsystem" ON)
dep_option(SDL_HIDAPI_LIBUSB "Use libusb for low level joystick drivers" OFF SDL_HIDAPI OFF)
dep_option(SDL_HIDAPI_JOYSTICK "Use HIDAPI for low level joystick drivers" ON SDL_HIDAPI OFF)
dep_option(SDL_VIRTUAL_JOYSTICK "Enable the virtual-joystick driver" ON SDL_HIDAPI OFF)
set_option(SDL_ASAN "Use AddressSanitizer to detect memory errors" OFF)
option(SDL_SHARED "Build a shared version of the library" ${SDL_SHARED_ENABLED_BY_DEFAULT})
option(SDL_STATIC "Build a static version of the library" ${SDL_STATIC_ENABLED_BY_DEFAULT})
option(SDL_TEST "Build the SDL2_test library" ${SDL_TEST_ENABLED_BY_DEFAULT})
dep_option(SDL_STATIC_PIC "Static version of the library should be built with Position Independent Code" "${CMAKE_POSITION_INDEPENDENT_CODE}" "SDL_STATIC" OFF)
dep_option(SDL_TESTS "Build the test directory" OFF SDL_TEST OFF)
set_option(SDL_INSTALL_TESTS "Install test-cases" OFF)
set(HAVE_STATIC_PIC "${SDL_STATIC_PIC}")
if(SDL_HIDAPI)
if(HIDAPI_ONLY_LIBUSB)
set(SDL_HIDAPI_LIBUSB ON CACHE BOOL "" FORCE)
elseif(HIDAPI_SKIP_LIBUSB)
set(SDL_HIDAPI_LIBUSB OFF CACHE BOOL "" FORCE)
endif()
endif()
if(VITA)
set_option(VIDEO_VITA_PIB "Build with PSVita piglet gles2 support" OFF)
set_option(VIDEO_VITA_PVR "Build with PSVita PVR gles/gles2 support" OFF)
endif()
# General source files
file(GLOB SOURCE_FILES
${SDL2_SOURCE_DIR}/src/*.c
${SDL2_SOURCE_DIR}/src/atomic/*.c
${SDL2_SOURCE_DIR}/src/audio/*.c
${SDL2_SOURCE_DIR}/src/cpuinfo/*.c
${SDL2_SOURCE_DIR}/src/dynapi/*.c
${SDL2_SOURCE_DIR}/src/events/*.c
${SDL2_SOURCE_DIR}/src/file/*.c
${SDL2_SOURCE_DIR}/src/joystick/*.c
${SDL2_SOURCE_DIR}/src/haptic/*.c
${SDL2_SOURCE_DIR}/src/hidapi/*.c
${SDL2_SOURCE_DIR}/src/libm/*.c
${SDL2_SOURCE_DIR}/src/locale/*.c
${SDL2_SOURCE_DIR}/src/misc/*.c
${SDL2_SOURCE_DIR}/src/power/*.c
${SDL2_SOURCE_DIR}/src/render/*.c
${SDL2_SOURCE_DIR}/src/render/*/*.c
${SDL2_SOURCE_DIR}/src/sensor/*.c
${SDL2_SOURCE_DIR}/src/stdlib/*.c
${SDL2_SOURCE_DIR}/src/thread/*.c
${SDL2_SOURCE_DIR}/src/timer/*.c
${SDL2_SOURCE_DIR}/src/video/*.c
${SDL2_SOURCE_DIR}/src/video/yuv2rgb/*.c)
set(SDL_DEFAULT_ASSERT_LEVEL_CONFIGURED 1)
if(SDL_ASSERTIONS MATCHES "^(auto|)$")
# Do nada - use optimization settings to determine the assertion level
set(SDL_DEFAULT_ASSERT_LEVEL )
set(SDL_DEFAULT_ASSERT_LEVEL_CONFIGURED 0)
elseif(SDL_ASSERTIONS MATCHES "^(disabled|0)$")
set(SDL_DEFAULT_ASSERT_LEVEL 0)
elseif(SDL_ASSERTIONS MATCHES "^(release|1)$")
set(SDL_DEFAULT_ASSERT_LEVEL 1)
elseif(SDL_ASSERTIONS MATCHES "^(enabled|2)$")
set(SDL_DEFAULT_ASSERT_LEVEL 2)
elseif(SDL_ASSERTIONS MATCHES "^(paranoid|3)$")
set(SDL_DEFAULT_ASSERT_LEVEL 3)
else()
message_error("unknown assertion level")
endif()
set(HAVE_ASSERTIONS ${SDL_ASSERTIONS})
if(NOT SDL_BACKGROUNDING_SIGNAL STREQUAL "OFF")
target_compile_definitions(sdl-build-options INTERFACE "-DSDL_BACKGROUNDING_SIGNAL=${SDL_BACKGROUNDING_SIGNAL}")
endif()
if(NOT SDL_FOREGROUNDING_SIGNAL STREQUAL "OFF")
target_compile_definitions(sdl-build-options INTERFACE "-DSDL_FOREGROUNDING_SIGNAL=${SDL_FOREGROUNDING_SIGNAL}")
endif()
# Compiler option evaluation
if(USE_GCC OR USE_CLANG)
# Check for -Wall first, so later things can override pieces of it.
# Note: clang-cl treats -Wall as -Weverything (which is very loud),
# /W3 as -Wall, and /W4 as -Wall -Wextra. So: /W3 is enough.
check_c_compiler_flag(-Wall HAVE_GCC_WALL)
if(MSVC_CLANG)
list(APPEND EXTRA_CFLAGS "/W3")
elseif(HAVE_GCC_WALL)
list(APPEND EXTRA_CFLAGS "-Wall")
if(HAIKU)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-multichar")
endif()
endif()
check_c_compiler_flag(-fno-strict-aliasing HAVE_GCC_NO_STRICT_ALIASING)
if(HAVE_GCC_NO_STRICT_ALIASING)
list(APPEND EXTRA_CFLAGS "-fno-strict-aliasing")
endif()
check_c_compiler_flag(-Wdeclaration-after-statement HAVE_GCC_WDECLARATION_AFTER_STATEMENT)
if(HAVE_GCC_WDECLARATION_AFTER_STATEMENT)
check_c_compiler_flag(-Werror=declaration-after-statement HAVE_GCC_WERROR_DECLARATION_AFTER_STATEMENT)
if(HAVE_GCC_WERROR_DECLARATION_AFTER_STATEMENT)
list(APPEND EXTRA_CFLAGS "-Werror=declaration-after-statement")
endif()
list(APPEND EXTRA_CFLAGS "-Wdeclaration-after-statement")
endif()
if(DEPENDENCY_TRACKING)
check_c_source_compiles("
#if !defined(__GNUC__) || __GNUC__ < 3
#error Dependency tracking requires GCC 3.0 or newer
#endif
int main(int argc, char **argv) { return 0; }" HAVE_DEPENDENCY_TRACKING)
endif()
if(SDL_GCC_ATOMICS)
check_c_source_compiles("int main(int argc, char **argv) {
int a;
void *x, *y, *z;
__sync_lock_test_and_set(&a, 4);
__sync_lock_test_and_set(&x, y);
__sync_fetch_and_add(&a, 1);
__sync_bool_compare_and_swap(&a, 5, 10);
__sync_bool_compare_and_swap(&x, y, z);
return 0; }" HAVE_GCC_ATOMICS)
if(NOT HAVE_GCC_ATOMICS)
check_c_source_compiles("int main(int argc, char **argv) {
int a;
__sync_lock_test_and_set(&a, 1);
__sync_lock_release(&a);
return 0; }" HAVE_GCC_SYNC_LOCK_TEST_AND_SET)
endif()
endif()
set(CMAKE_REQUIRED_FLAGS "-mpreferred-stack-boundary=2")
check_c_source_compiles("int x = 0; int main(int argc, char **argv) { return 0; }"
HAVE_GCC_PREFERRED_STACK_BOUNDARY)
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
set(CMAKE_REQUIRED_FLAGS "-fvisibility=hidden -Werror")
check_c_source_compiles("
#if !defined(__GNUC__) || __GNUC__ < 4
#error SDL only uses visibility attributes in GCC 4 or newer
#endif
int main(int argc, char **argv) { return 0; }" HAVE_GCC_FVISIBILITY)
if(HAVE_GCC_FVISIBILITY)
list(APPEND EXTRA_CFLAGS "-fvisibility=hidden")
endif()
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
check_c_compiler_flag(-Wshadow HAVE_GCC_WSHADOW)
if(HAVE_GCC_WSHADOW)
list(APPEND EXTRA_CFLAGS "-Wshadow")
endif()
if(APPLE)
# FIXME: use generator expression instead of appending to EXTRA_LDFLAGS_BUILD
list(APPEND EXTRA_LDFLAGS_BUILD "-Wl,-undefined,error")
list(APPEND EXTRA_LDFLAGS_BUILD "-Wl,-compatibility_version,${DYLIB_COMPATIBILITY_VERSION}")
list(APPEND EXTRA_LDFLAGS_BUILD "-Wl,-current_version,${DYLIB_CURRENT_VERSION}")
elseif(NOT OPENBSD)
set(CMAKE_REQUIRED_FLAGS "-Wl,--no-undefined")
check_c_compiler_flag("" HAVE_NO_UNDEFINED)
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
if(HAVE_NO_UNDEFINED AND NOT (USE_CLANG AND WINDOWS))
list(APPEND EXTRA_LDFLAGS_BUILD "-Wl,--no-undefined")
endif()
endif()
# Force color diagnostics when one of these conditions are met
if(DEFINED ENV{CI} OR DEFINED ENV{USE_CCACHE} OR CMAKE_GENERATOR MATCHES Ninja)
if(EMSCRIPTEN OR (USE_GCC AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.9))
list(APPEND EXTRA_CFLAGS -fdiagnostics-color=always)
elseif(USE_CLANG AND NOT CMAKE_C_COMPILER_ID MATCHES AppleClang)
list(APPEND EXTRA_CFLAGS -fcolor-diagnostics)
endif()
endif()
endif()
if(MSVC)
target_compile_definitions(sdl-build-options INTERFACE "-D_CRT_SECURE_NO_DEPRECATE")
target_compile_definitions(sdl-build-options INTERFACE "-D_CRT_NONSTDC_NO_DEPRECATE")
target_compile_definitions(sdl-build-options INTERFACE "-D_CRT_SECURE_NO_WARNINGS")
# CET support was added in VS 16.7
if(MSVC_VERSION GREATER 1926 AND CMAKE_GENERATOR_PLATFORM MATCHES "Win32|x64")
list(APPEND EXTRA_LDFLAGS_BUILD "-CETCOMPAT")
endif()
endif()
if(MSVC)
# Due to a limitation of Microsoft's LTO implementation, LTO must be disabled for memcpy and memset.
# The same applies to various functions normally belonging in the C library (for x86 architecture).
set_property(SOURCE src/stdlib/SDL_mslibc.c APPEND PROPERTY COMPILE_FLAGS /GL-)
endif()
if(SDL_ASSEMBLY)
if(USE_GCC OR USE_CLANG)
# TODO: Those all seem to be quite GCC specific - needs to be
# reworked for better compiler support
set(HAVE_ASSEMBLY TRUE)
if(SDL_MMX)
set(CMAKE_REQUIRED_FLAGS "-mmmx")
check_c_source_compiles("
#ifdef __MINGW32__
#include <_mingw.h>
#ifdef __MINGW64_VERSION_MAJOR
#include <intrin.h>
#else
#include <mmintrin.h>
#endif
#else
#include <mmintrin.h>
#endif
#ifndef __MMX__
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" HAVE_MMX)
if(HAVE_MMX)
list(APPEND EXTRA_CFLAGS "-mmmx")
endif()
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
endif()
if(SDL_3DNOW)
set(CMAKE_REQUIRED_FLAGS "-m3dnow")
check_c_source_compiles("
#include <mm3dnow.h>
#ifndef __3dNOW__
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) {
void *p = 0;
_m_prefetch(p);
return 0;
}" HAVE_3DNOW)
if(HAVE_3DNOW)
list(APPEND EXTRA_CFLAGS "-m3dnow")
endif()
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
endif()
if(SDL_SSE)
set(CMAKE_REQUIRED_FLAGS "-msse")
check_c_source_compiles("
#ifdef __MINGW32__
#include <_mingw.h>
#ifdef __MINGW64_VERSION_MAJOR
#include <intrin.h>
#else
#include <xmmintrin.h>
#endif
#else
#include <xmmintrin.h>
#endif
#ifndef __SSE__
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" HAVE_SSE)
if(HAVE_SSE)
list(APPEND EXTRA_CFLAGS "-msse")
endif()
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
endif()
if(SDL_SSE2)
set(CMAKE_REQUIRED_FLAGS "-msse2")
check_c_source_compiles("
#ifdef __MINGW32__
#include <_mingw.h>
#ifdef __MINGW64_VERSION_MAJOR
#include <intrin.h>
#else
#include <emmintrin.h>
#endif
#else
#include <emmintrin.h>
#endif
#ifndef __SSE2__
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" HAVE_SSE2)
if(HAVE_SSE2)
list(APPEND EXTRA_CFLAGS "-msse2")
endif()
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
endif()
if(SDL_SSE3)
set(CMAKE_REQUIRED_FLAGS "-msse3")
check_c_source_compiles("
#ifdef __MINGW32__
#include <_mingw.h>
#ifdef __MINGW64_VERSION_MAJOR
#include <intrin.h>
#else
#include <pmmintrin.h>
#endif
#else
#include <pmmintrin.h>
#endif
#ifndef __SSE3__
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" HAVE_SSE3)
if(HAVE_SSE3)
list(APPEND EXTRA_CFLAGS "-msse3")
endif()
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
endif()
if(NOT SDL_SSEMATH)
if(SDL_SSE OR SDL_SSE2 OR SDL_SSE3)
if(USE_GCC)
check_c_compiler_flag(-mfpmath=387 HAVE_FP_387)
if(HAVE_FP_387)
list(APPEND EXTRA_CFLAGS "-mfpmath=387")
endif()
endif()
endif()
else()
set(HAVE_SSEMATH TRUE)
endif()
check_include_file("immintrin.h" HAVE_IMMINTRIN_H)
if(SDL_ALTIVEC)
set(CMAKE_REQUIRED_FLAGS "-maltivec")
check_c_source_compiles("
#include <altivec.h>
vector unsigned int vzero() {
return vec_splat_u32(0);
}
int main(int argc, char **argv) { return 0; }" HAVE_ALTIVEC_H_HDR)
check_c_source_compiles("
vector unsigned int vzero() {
return vec_splat_u32(0);
}
int main(int argc, char **argv) { return 0; }" HAVE_ALTIVEC)
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
if(HAVE_ALTIVEC OR HAVE_ALTIVEC_H_HDR)
set(HAVE_ALTIVEC TRUE) # if only HAVE_ALTIVEC_H_HDR is set
list(APPEND EXTRA_CFLAGS "-maltivec")
set(SDL_ALTIVEC_BLITTERS 1)
if(HAVE_ALTIVEC_H_HDR)
set(HAVE_ALTIVEC_H 1)
endif()
endif()
endif()
if(SDL_ARMSIMD)
set(ORIG_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -x assembler-with-cpp")
check_c_source_compiles("
.text
.arch armv6
.object_arch armv4
.arm
.altmacro
#ifndef __ARM_EABI__
#error EABI is required (to be sure that calling conventions are compatible)
#endif
pld [r0]
uqadd8 r0, r0, r0
" ARMSIMD_FOUND)
set(CMAKE_REQUIRED_FLAGS "${ORIG_CMAKE_REQUIRED_FLAGS}")
if(ARMSIMD_FOUND)
set(HAVE_ARMSIMD TRUE)
set(SDL_ARM_SIMD_BLITTERS 1)
file(GLOB ARMSIMD_SOURCES ${SDL2_SOURCE_DIR}/src/video/arm/pixman-arm-simd*.S)
list(APPEND SOURCE_FILES ${ARMSIMD_SOURCES})
set(WARN_ABOUT_ARM_SIMD_ASM_MIT TRUE)
endif()
endif()
if(SDL_ARMNEON)
set(ORIG_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -x assembler-with-cpp")
check_c_source_compiles("
.text
.fpu neon
.arch armv7a
.object_arch armv4
.eabi_attribute 10, 0
.arm
.altmacro
#ifndef __ARM_EABI__
#error EABI is required (to be sure that calling conventions are compatible)
#endif
pld [r0]
vmovn.u16 d0, q0
" ARMNEON_FOUND)
set(CMAKE_REQUIRED_FLAGS "${ORIG_CMAKE_REQUIRED_FLAGS}")
if(ARMNEON_FOUND)
set(HAVE_ARMNEON TRUE)
set(SDL_ARM_NEON_BLITTERS 1)
file(GLOB ARMNEON_SOURCES ${SDL2_SOURCE_DIR}/src/video/arm/pixman-arm-neon*.S)
list(APPEND SOURCE_FILES ${ARMNEON_SOURCES})
set(WARN_ABOUT_ARM_NEON_ASM_MIT TRUE)
endif()
endif()
elseif(MSVC_VERSION GREATER 1500)
# TODO: SDL_cpuinfo.h needs to support the user's configuration wish
# for MSVC - right now it is always activated
if(NOT ARCH_64)
set(HAVE_MMX TRUE)
set(HAVE_3DNOW TRUE)
endif()
set(HAVE_SSE TRUE)
set(HAVE_SSE2 TRUE)
set(HAVE_SSE3 TRUE)
check_include_file("immintrin.h" HAVE_IMMINTRIN_H)
endif()
endif()
# TODO: Can't deactivate on FreeBSD? w/o LIBC, SDL_stdinc.h can't define
# anything.
if(SDL_LIBC)
if(WINDOWS AND NOT MINGW)
set(HAVE_LIBC TRUE)
check_include_file(stdint.h HAVE_STDINT_H)
foreach(_HEADER stdio.h string.h wchar.h ctype.h math.h limits.h)
string(TOUPPER "HAVE_${_HEADER}" _UPPER)
string(REPLACE "." "_" _HAVE_H ${_UPPER})
set(${_HAVE_H} 1)
endforeach()
set(HAVE_SIGNAL_H 1)
foreach(_FN
malloc calloc realloc free bsearch qsort abs memset memcpy memmove memcmp
wcslen _wcsdup wcsdup wcsstr wcscmp wcsncmp _wcsicmp _wcsnicmp
strlen _strrev _strupr _strlwr strchr strrchr strstr itoa _ltoa
_ultoa strtol strtoul strtoll strtod atoi atof strcmp strncmp
_stricmp _strnicmp sscanf
acos acosf asin asinf atan atanf atan2 atan2f ceil ceilf
copysign copysignf cos cosf exp expf fabs fabsf floor floorf fmod fmodf
log logf log10 log10f lround lroundf pow powf round roundf scalbn scalbnf
sin sinf sqrt sqrtf tan tanf trunc truncf)
string(TOUPPER ${_FN} _UPPER)
set(HAVE_${_UPPER} 1)
endforeach()
set(HAVE_ALLOCA 1)
check_symbol_exists(M_PI math.h HAVE_M_PI)
target_compile_definitions(sdl-build-options INTERFACE "-D_USE_MATH_DEFINES") # needed for M_PI
set(STDC_HEADERS 1)
else()
set(HAVE_LIBC TRUE)
check_include_file(sys/types.h HAVE_SYS_TYPES_H)
foreach(_HEADER
stdio.h stdlib.h stddef.h stdarg.h malloc.h memory.h string.h limits.h float.h
strings.h wchar.h inttypes.h stdint.h ctype.h math.h iconv.h signal.h libunwind.h)
string(TOUPPER "HAVE_${_HEADER}" _UPPER)
string(REPLACE "." "_" _HAVE_H ${_UPPER})
check_include_file("${_HEADER}" ${_HAVE_H})
endforeach()
set(STDC_HEADER_NAMES "stddef.h;stdarg.h;stdlib.h;string.h;stdio.h;wchar.h;float.h")
check_include_files("${STDC_HEADER_NAMES}" STDC_HEADERS)
check_symbol_exists(M_PI math.h HAVE_M_PI)
# TODO: refine the mprotect check
check_c_source_compiles("#include <sys/types.h>
#include <sys/mman.h>
int main(void) { return 0; }" HAVE_MPROTECT)
foreach(_FN
strtod malloc calloc realloc free getenv setenv putenv unsetenv
bsearch qsort abs bcopy memset memcpy memmove memcmp strlen strlcpy strlcat
_strrev _strupr _strlwr index rindex strchr strrchr strstr strtok_r
itoa _ltoa _uitoa _ultoa strtol strtoul _i64toa _ui64toa strtoll strtoull
atoi atof strcmp strncmp _stricmp strcasecmp _strnicmp strncasecmp
wcscmp _wcsdup wcsdup wcslcat wcslcpy wcslen wcsncmp wcsstr
wcscasecmp _wcsicmp wcsncasecmp _wcsnicmp
sscanf vsscanf vsnprintf fopen64 fseeko fseeko64 _Exit
)
string(TOUPPER ${_FN} _UPPER)
set(_HAVEVAR "HAVE_${_UPPER}")
check_symbol_exists("${_FN}" "${STDC_HEADER_NAMES}" ${_HAVEVAR})
endforeach()
check_symbol_exists(sigaction "signal.h" HAVE_SIGACTION)
check_symbol_exists(setjmp "setjmp.h" HAVE_SETJMP)
check_symbol_exists(nanosleep "time.h" HAVE_NANOSLEEP)
check_symbol_exists(sysconf "unistd.h" HAVE_SYSCONF)
check_symbol_exists(sysctlbyname "sys/types.h;sys/sysctl.h" HAVE_SYSCTLBYNAME)
check_symbol_exists(getauxval "sys/auxv.h" HAVE_GETAUXVAL)
check_symbol_exists(elf_aux_info "sys/auxv.h" HAVE_ELF_AUX_INFO)
check_symbol_exists(poll "poll.h" HAVE_POLL)
check_library_exists(m pow "" HAVE_LIBM)
if(HAVE_LIBM)
set(CMAKE_REQUIRED_LIBRARIES m)
foreach(_FN
atan atan2 atanf atan2f ceil ceilf copysign copysignf cos cosf