MethaneKit

1
# This file is part of the ios-cmake project. It was retrieved from
2
# https://github.com/leetal/ios-cmake.git, which is a fork of
3
# https://github.com/gerstrong/ios-cmake.git, which is a fork of
4
# https://github.com/cristeab/ios-cmake.git, which is a fork of
5
# https://code.google.com/p/ios-cmake/. Which in turn is based off of
6
# the Platform/Darwin.cmake and Platform/UnixPaths.cmake files which
7
# are included with CMake 2.8.4
8
#
9
# The ios-cmake project is licensed under the new BSD license.
10
#
11
# Copyright (c) 2014, Bogdan Cristea and LTE Engineering Software,
12
# Kitware, Inc., Insight Software Consortium.  All rights reserved.
13
# Redistribution and use in source and binary forms, with or without
14
# modification, are permitted provided that the following conditions
15
# are met:
16
# 1. Redistributions of source code must retain the above copyright
17
# notice, this list of conditions and the following disclaimer.
18
#
19
# 2. Redistributions in binary form must reproduce the above copyright
20
# notice, this list of conditions and the following disclaimer in the
21
# documentation and/or other materials provided with the distribution.
22
#
23
# 3. Neither the name of the copyright holder nor the names of its
24
# contributors may be used to endorse or promote products derived from
25
# this software without specific prior written permission.
26
#
27
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
30
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
31
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
32
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
33
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
34
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
35
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
37
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38
# POSSIBILITY OF SUCH DAMAGE.
39
#
40
# This file is based off of the Platform/Darwin.cmake and
41
# Platform/UnixPaths.cmake files which are included with CMake 2.8.4
42
# It has been altered for iOS development.
43
#
44
# Updated by Alex Stewart (alexs.mac@gmail.com)
45
#
46
# *****************************************************************************
47
#      Now maintained by Alexander Widerberg (widerbergaren [at] gmail.com)
48
#                      under the BSD-3-Clause license
49
#                   https://github.com/leetal/ios-cmake
50
# *****************************************************************************
51
#
52
#                           INFORMATION / HELP
53
#
54
###############################################################################
55
#                                  OPTIONS                                    #
56
###############################################################################
57
#
58
# PLATFORM: (default "OS64")
59
#    OS = Build for iPhoneOS.
60
#    OS64 = Build for arm64 iphoneOS.
61
#    OS64COMBINED = Build for arm64 x86_64 iphoneOS. Combined into FAT STATIC lib (supported on 3.14+ of CMakewith "-G Xcode" argument ONLY)
62
#    SIMULATOR = Build for x86 i386 iphoneOS Simulator.
63
#    SIMULATOR64 = Build for x86_64 iphoneOS Simulator.
64
#    SIMULATORARM64 = Build for arm64 iphoneOS Simulator.
65
#    TVOS = Build for arm64 tvOS.
66
#    TVOSCOMBINED = Build for arm64 x86_64 tvOS. Combined into FAT STATIC lib (supported on 3.14+ of CMake with "-G Xcode" argument ONLY)
67
#    SIMULATOR_TVOS = Build for x86_64 tvOS Simulator.
68
#    WATCHOS = Build for armv7k arm64_32 for watchOS.
69
#    WATCHOSCOMBINED = Build for armv7k arm64_32 x86_64 watchOS. Combined into FAT STATIC lib (supported on 3.14+ of CMake with "-G Xcode" argument ONLY)
70
#    SIMULATOR_WATCHOS = Build for x86_64 for watchOS Simulator.
71
#    MAC = Build for x86_64 macOS.
72
#    MAC_ARM64 = Build for Apple Silicon macOS.
73
#    MAC_CATALYST = Build for x86_64 macOS with Catalyst support (iOS toolchain on macOS).
74
#                   Note: The build argument "MACOSX_DEPLOYMENT_TARGET" can be used to control min-version of macOS
75
#    MAC_CATALYST_ARM64 = Build for Apple Silicon macOS with Catalyst support (iOS toolchain on macOS).
76
#                         Note: The build argument "MACOSX_DEPLOYMENT_TARGET" can be used to control min-version of macOS
77
#
78
# CMAKE_OSX_SYSROOT: Path to the SDK to use.  By default this is
79
#    automatically determined from PLATFORM and xcodebuild, but
80
#    can also be manually specified (although this should not be required).
81
#
82
# CMAKE_DEVELOPER_ROOT: Path to the Developer directory for the platform
83
#    being compiled for.  By default this is automatically determined from
84
#    CMAKE_OSX_SYSROOT, but can also be manually specified (although this should
85
#    not be required).
86
#
87
# DEPLOYMENT_TARGET: Minimum SDK version to target. Default 2.0 on watchOS and 9.0 on tvOS+iOS
88
#
89
# NAMED_LANGUAGE_SUPPORT:
90
#    ON (default) = Will require "enable_language(OBJC) and/or enable_language(OBJCXX)" for full OBJC|OBJCXX support
91
#    OFF = Will embed the OBJC and OBJCXX flags into the CMAKE_C_FLAGS and CMAKE_CXX_FLAGS (legacy behaviour, CMake version < 3.16)
92
#
93
# ENABLE_BITCODE: (ON|OFF) Enables or disables bitcode support. Default ON
94
#
95
# ENABLE_ARC: (ON|OFF) Enables or disables ARC support. Default ON (ARC enabled by default)
96
#
97
# ENABLE_VISIBILITY: (ON|OFF) Enables or disables symbol visibility support. Default OFF (visibility hidden by default)
98
#
99
# ENABLE_STRICT_TRY_COMPILE: (ON|OFF) Enables or disables strict try_compile() on all Check* directives (will run linker
100
#    to actually check if linking is possible). Default OFF (will set CMAKE_TRY_COMPILE_TARGET_TYPE to STATIC_LIBRARY)
101
#
102
# ARCHS: (armv7 armv7s armv7k arm64 arm64_32 i386 x86_64) If specified, will override the default architectures for the given PLATFORM
103
#    OS = armv7 armv7s arm64 (if applicable)
104
#    OS64 = arm64 (if applicable)
105
#    SIMULATOR = i386
106
#    SIMULATOR64 = x86_64
107
#    SIMULATORARM64 = arm64
108
#    TVOS = arm64
109
#    SIMULATOR_TVOS = x86_64 (i386 has since long been deprecated)
110
#    WATCHOS = armv7k arm64_32 (if applicable)
111
#    SIMULATOR_WATCHOS = x86_64 (i386 has since long been deprecated)
112
#    MAC = x86_64
113
#    MAC_ARM64 = arm64
114
#    MAC_CATALYST = x86_64
115
#    MAC_CATALYST_ARM64 = arm64
116
#
117
# NOTE: When manually specifying ARCHS, put a semi-colon between the entries. E.g., -DARCHS="armv7;arm64"
118
#
119
###############################################################################
120
#                                END OPTIONS                                  #
121
###############################################################################
122
#
123
# This toolchain defines the following properties (available via get_property()) for use externally:
124
#
125
# PLATFORM: The currently targeted platform.
126
# XCODE_VERSION: Version number (not including Build version) of Xcode detected.
127
# SDK_VERSION: Version of SDK being used.
128
# OSX_ARCHITECTURES: Architectures being compiled for (generated from PLATFORM).
129
# APPLE_TARGET_TRIPLE: Used by autoconf build systems. NOTE: If "ARCHS" are overridden, this will *NOT* be set!
130
#
131
# This toolchain defines the following macros for use externally:
132
#
133
# set_xcode_property (TARGET XCODE_PROPERTY XCODE_VALUE XCODE_VARIANT)
134
#   A convenience macro for setting xcode specific properties on targets.
135
#   Available variants are: All, Release, RelWithDebInfo, Debug, MinSizeRel
136
#   example: set_xcode_property (myioslib IPHONEOS_DEPLOYMENT_TARGET "3.1" "all").
137
#
138
# find_host_package (PROGRAM ARGS)
139
#   A macro used to find executable programs on the host system, not within the
140
#   environment. Thanks to the android-cmake project for providing the
141
#   command.
142
#
143

144
cmake_minimum_required(VERSION 3.8.0)
145

146
# CMake invokes the toolchain file twice during the first build, but only once during subsequent rebuilds.
147
if(DEFINED ENV{_IOS_TOOLCHAIN_HAS_RUN})
148
  return()
149
endif()
150
set(ENV{_IOS_TOOLCHAIN_HAS_RUN} true)
151

152
# List of supported platform values
153
list(APPEND _supported_platforms
154
        "OS" "OS64" "OS64COMBINED" "SIMULATOR" "SIMULATOR64" "SIMULATORARM64"
155
        "TVOS" "TVOSCOMBINED" "SIMULATOR_TVOS"
156
        "WATCHOS" "WATCHOSCOMBINED" "SIMULATOR_WATCHOS"
157
        "MAC" "MAC_ARM64"
158
        "MAC_CATALYST" "MAC_CATALYST_ARM64")
159

160
# Cache what generator is used
161
set(USED_CMAKE_GENERATOR "${CMAKE_GENERATOR}")
162

163
# Check if using a CMake version capable of building combined FAT builds (simulator and target slices combined in one static lib)
164
if(${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.14")
165
  set(MODERN_CMAKE YES)
166
endif()
167

168
# Get the Xcode version being used.
169
# Problem: CMake runs toolchain files multiple times, but can't read cache variables on some runs.
170
# Workaround: On first run (in which cache variables are always accessible), set an intermediary environment variable.
171
#
172
# NOTE: This pattern is used i many places in this toolchain to speed up checks of all sorts
173
if(DEFINED XCODE_VERSION_INT)
174
  # Environment variables are always preserved.
175
  set(ENV{_XCODE_VERSION_INT} "${XCODE_VERSION_INT}")
176
elseif(DEFINED ENV{_XCODE_VERSION_INT})
177
  set(XCODE_VERSION_INT "$ENV{_XCODE_VERSION_INT}")
178
elseif(NOT DEFINED XCODE_VERSION_INT)
179
  find_program(XCODEBUILD_EXECUTABLE xcodebuild)
180
  if(NOT XCODEBUILD_EXECUTABLE)
181
    message(FATAL_ERROR "xcodebuild not found. Please install either the standalone commandline tools or Xcode.")
182
  endif()
183
  execute_process(COMMAND ${XCODEBUILD_EXECUTABLE} -version
184
          OUTPUT_VARIABLE XCODE_VERSION_INT
185
          ERROR_QUIET
186
          OUTPUT_STRIP_TRAILING_WHITESPACE)
187
  string(REGEX MATCH "Xcode [0-9\\.]+" XCODE_VERSION_INT "${XCODE_VERSION_INT}")
188
  string(REGEX REPLACE "Xcode ([0-9\\.]+)" "\\1" XCODE_VERSION_INT "${XCODE_VERSION_INT}")
189
  set(XCODE_VERSION_INT "${XCODE_VERSION_INT}" CACHE INTERNAL "")
190
endif()
191

192
# Assuming that xcode 12.0 is installed you most probably have ios sdk 14.0 or later installed (tested on Big Sur)
193
# if you don't set a deployment target it will be set the way you only get 64-bit builds
194
if(NOT DEFINED DEPLOYMENT_TARGET AND XCODE_VERSION_INT VERSION_GREATER 12.0)
195
  # Temporarily fix the arm64 issues in CMake install-combined by excluding arm64 for simulator builds (needed for Apple Silicon...)
196
  set(CMAKE_XCODE_ATTRIBUTE_EXCLUDED_ARCHS[sdk=iphonesimulator*] "arm64")
197
endif()
198

199
# Check if the platform variable is set
200
if(DEFINED PLATFORM)
201
  # Environment variables are always preserved.
202
  set(ENV{_PLATFORM} "${PLATFORM}")
203
elseif(DEFINED ENV{_PLATFORM})
204
  set(PLATFORM "$ENV{_PLATFORM}")
205
elseif(NOT DEFINED PLATFORM)
206
  message(FATAL_ERROR "PLATFORM argument not set. Bailing configure since I don't know what target you want to build for!")
207
endif ()
208

209
if(PLATFORM MATCHES ".*COMBINED" AND NOT CMAKE_GENERATOR MATCHES "Xcode")
210
  message(FATAL_ERROR "The combined builds support requires Xcode to be used as generator via '-G Xcode' command-line argument in CMake")
211
endif()
212

213
# Safeguard that the platform value is set and is one of the supported values
214
list(FIND _supported_platforms ${PLATFORM} contains_PLATFORM)
215
if("${contains_PLATFORM}" EQUAL "-1")
216
  string(REPLACE ";"  "\n * " _supported_platforms_formatted "${_supported_platforms}")
217
  message(FATAL_ERROR " Invalid PLATFORM specified! Current value: ${PLATFORM}.\n"
218
          " Supported PLATFORM values: \n * ${_supported_platforms_formatted}")
219
endif()
220

221
# Check if Apple Silicon is supported
222
if(PLATFORM MATCHES "^(MAC_ARM64)$|^(MAC_CATALYST_ARM64)$" AND ${CMAKE_VERSION} VERSION_LESS "3.19.5")
223
  message(FATAL_ERROR "Apple Silicon builds requires a minimum of CMake 3.19.5")
224
endif()
225

226
# Touch toolchain variable to suppress "unused variable" warning.
227
# This happens if CMake is invoked with the same command line the second time.
228
if(CMAKE_TOOLCHAIN_FILE)
229
endif()
230

231
# Fix for PThread library not in path
232
set(CMAKE_THREAD_LIBS_INIT "-lpthread")
233
set(CMAKE_HAVE_THREADS_LIBRARY 1)
234
set(CMAKE_USE_WIN32_THREADS_INIT 0)
235
set(CMAKE_USE_PTHREADS_INIT 1)
236

237
# Specify named language support defaults.
238
if(NOT DEFINED NAMED_LANGUAGE_SUPPORT AND ${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.16")
239
  set(NAMED_LANGUAGE_SUPPORT ON)
240
  message(STATUS "[DEFAULTS] Using explicit named language support! E.g., enable_language(CXX) is needed in the project files.")
241
elseif(NOT DEFINED NAMED_LANGUAGE_SUPPORT AND ${CMAKE_VERSION} VERSION_LESS "3.16")
242
  set(NAMED_LANGUAGE_SUPPORT OFF)
243
  message(STATUS "[DEFAULTS] Disabling explicit named language support. Falling back to legacy behaviour.")
244
elseif(DEFINED NAMED_LANGUAGE_SUPPORT AND ${CMAKE_VERSION} VERSION_LESS "3.16")
245
  message(FATAL_ERROR "CMake named language support for OBJC and OBJCXX was added in CMake 3.16.")
246
endif()
247
set(NAMED_LANGUAGE_SUPPORT_INT ${NAMED_LANGUAGE_SUPPORT} CACHE BOOL
248
        "Whether or not to enable explicit named language support" FORCE)
249

250
# Specify minimum version of deployment target.
251
if(NOT DEFINED DEPLOYMENT_TARGET)
252
  if (PLATFORM MATCHES "WATCHOS")
253
    # Unless specified, SDK version 4.0 is used by default as minimum target version (watchOS).
254
    set(DEPLOYMENT_TARGET "4.0")
255
  elseif(PLATFORM STREQUAL "MAC")
256
    # Unless specified, SDK version 10.13 (High sierra) is used by default as minimum target version (macos).
257
    set(DEPLOYMENT_TARGET "10.13")
258
  elseif(PLATFORM STREQUAL "MAC_ARM64")
259
    # Unless specified, SDK version 11.0 (Big Sur) is used by default as minimum target version (macos on arm).
260
    set(DEPLOYMENT_TARGET "11.0")
261
  elseif(PLATFORM STREQUAL "MAC_CATALYST" OR PLATFORM STREQUAL "MAC_CATALYST_ARM64")
262
    # Unless specified, SDK version 13.0 is used by default as minimum target version (mac catalyst minimum requirement).
263
    set(DEPLOYMENT_TARGET "13.1")
264
  else()
265
    # Unless specified, SDK version 11.0 is used by default as minimum target version (iOS, tvOS).
266
    set(DEPLOYMENT_TARGET "11.0")
267
  endif()
268
  message(STATUS "[DEFAULTS] Using the default min-version since DEPLOYMENT_TARGET not provided!")
269
elseif(DEFINED DEPLOYMENT_TARGET AND PLATFORM MATCHES "^MAC_CATALYST" AND ${DEPLOYMENT_TARGET} VERSION_LESS "13.1")
270
  message(FATAL_ERROR "Mac Catalyst builds requires a minimum deployment target of 13.1!")
271
endif()
272

273
# Store the DEPLOYMENT_TARGET in the cache
274
set(DEPLOYMENT_TARGET "${DEPLOYMENT_TARGET}" CACHE INTERNAL "")
275

276
# Handle the case where we are targeting iOS and a version above 10.3.4 (32-bit support dropped officially)
277
if(PLATFORM STREQUAL "OS" AND DEPLOYMENT_TARGET VERSION_GREATER_EQUAL 10.3.4)
278
  set(PLATFORM "OS64")
279
  message(STATUS "Targeting minimum SDK version ${DEPLOYMENT_TARGET}. Dropping 32-bit support.")
280
elseif(PLATFORM STREQUAL "SIMULATOR" AND DEPLOYMENT_TARGET VERSION_GREATER_EQUAL 10.3.4)
281
  set(PLATFORM "SIMULATOR64")
282
  message(STATUS "Targeting minimum SDK version ${DEPLOYMENT_TARGET}. Dropping 32-bit support.")
283
endif()
284

285
set(PLATFORM_INT "${PLATFORM}")
286

287
if(DEFINED ARCHS)
288
  string(REPLACE ";" "-" ARCHS_SPLIT "${ARCHS}")
289
endif()
290

291
# Determine the platform name and architectures for use in xcodebuild commands
292
# from the specified PLATFORM_INT name.
293
if(PLATFORM_INT STREQUAL "OS")
294
  set(SDK_NAME iphoneos)
295
  if(NOT ARCHS)
296
    set(ARCHS armv7 armv7s arm64)
297
    set(APPLE_TARGET_TRIPLE_INT arm-apple-ios${DEPLOYMENT_TARGET})
298
  else()
299
    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET})  
300
  endif()
301
elseif(PLATFORM_INT STREQUAL "OS64")
302
  set(SDK_NAME iphoneos)
303
  if(NOT ARCHS)
304
    if (XCODE_VERSION_INT VERSION_GREATER 10.0)
305
      set(ARCHS arm64) # FIXME: Add arm64e when Apple have fixed the integration issues with it, libarclite_iphoneos.a is currently missung bitcode markers for example
306
    else()
307
      set(ARCHS arm64)
308
    endif()
309
    set(APPLE_TARGET_TRIPLE_INT aarch64-apple-ios${DEPLOYMENT_TARGET})
310
  else()
311
    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET})
312
  endif()
313
elseif(PLATFORM_INT STREQUAL "OS64COMBINED")
314
  set(SDK_NAME iphoneos)
315
  if(MODERN_CMAKE)
316
    if(NOT ARCHS)
317
      if (XCODE_VERSION_INT VERSION_GREATER 10.0)
318
        set(ARCHS arm64 x86_64) # FIXME: Add arm64e when Apple have fixed the integration issues with it, libarclite_iphoneos.a is currently missung bitcode markers for example
319
        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=iphoneos*] "arm64")
320
        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=iphonesimulator*] "x86_64")
321
        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=iphoneos*] "arm64")
322
        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=iphonesimulator*] "x86_64")
323
      else()
324
        set(ARCHS arm64 x86_64)
325
        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=iphoneos*] "arm64")
326
        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=iphonesimulator*] "x86_64")
327
        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=iphoneos*] "arm64")
328
        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=iphonesimulator*] "x86_64")
329
      endif()
330
      set(APPLE_TARGET_TRIPLE_INT aarch64-x86_64-apple-ios${DEPLOYMENT_TARGET})
331
    else()
332
      set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET})
333
    endif()
334
  else()
335
    message(FATAL_ERROR "Please make sure that you are running CMake 3.14+ to make the OS64COMBINED setting work")
336
  endif()
337
elseif(PLATFORM_INT STREQUAL "SIMULATOR")
338
  set(SDK_NAME iphonesimulator)
339
  if(NOT ARCHS)
340
    set(ARCHS i386)
341
    set(APPLE_TARGET_TRIPLE_INT i386-apple-ios${DEPLOYMENT_TARGET}-simulator)
342
  else()
343
    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET}-simulator)
344
  endif()
345
  message(DEPRECATION "SIMULATOR IS DEPRECATED. Consider using SIMULATOR64 instead.")
346
elseif(PLATFORM_INT STREQUAL "SIMULATOR64")
347
  set(SDK_NAME iphonesimulator)
348
  if(NOT ARCHS)
349
    set(ARCHS x86_64)
350
    set(APPLE_TARGET_TRIPLE_INT x86_64-apple-ios${DEPLOYMENT_TARGET}-simulator)
351
  else()
352
    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET}-simulator)
353
  endif()
354
elseif(PLATFORM_INT STREQUAL "SIMULATORARM64")
355
  set(SDK_NAME iphonesimulator)
356
  if(NOT ARCHS)
357
    set(ARCHS arm64)
358
    set(APPLE_TARGET_TRIPLE_INT aarch64-apple-ios${DEPLOYMENT_TARGET}-simulator)
359
  else()
360
    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET}-simulator)
361
  endif()
362
elseif(PLATFORM_INT STREQUAL "TVOS")
363
  set(SDK_NAME appletvos)
364
  if(NOT ARCHS)
365
    set(ARCHS arm64)
366
    set(APPLE_TARGET_TRIPLE_INT aarch64-apple-tvos${DEPLOYMENT_TARGET})
367
  else()
368
    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-tvos${DEPLOYMENT_TARGET})
369
  endif()
370
elseif (PLATFORM_INT STREQUAL "TVOSCOMBINED")
371
  set(SDK_NAME appletvos)
372
  if(MODERN_CMAKE)
373
    if(NOT ARCHS)
374
      set(ARCHS arm64 x86_64)
375
      set(APPLE_TARGET_TRIPLE_INT aarch64-x86_64-apple-tvos${DEPLOYMENT_TARGET})
376
      set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=appletvos*] "arm64")
377
      set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=appletvsimulator*] "x86_64")
378
      set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=appletvos*] "arm64")
379
      set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=appletvsimulator*] "x86_64")
380
    else()
381
      set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-tvos${DEPLOYMENT_TARGET})
382
    endif()
383
  else()
384
    message(FATAL_ERROR "Please make sure that you are running CMake 3.14+ to make the TVOSCOMBINED setting work")
385
  endif()
386
elseif(PLATFORM_INT STREQUAL "SIMULATOR_TVOS")
387
  set(SDK_NAME appletvsimulator)
388
  if(NOT ARCHS)
389
    set(ARCHS x86_64)
390
    set(APPLE_TARGET_TRIPLE_INT x86_64-apple-tvos${DEPLOYMENT_TARGET}-simulator)
391
  else()
392
    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-tvos${DEPLOYMENT_TARGET}-simulator)
393
  endif()
394
elseif(PLATFORM_INT STREQUAL "WATCHOS")
395
  set(SDK_NAME watchos)
396
  if(NOT ARCHS)
397
    if (XCODE_VERSION_INT VERSION_GREATER 10.0)
398
      set(ARCHS armv7k arm64_32)
399
      set(APPLE_TARGET_TRIPLE_INT aarch64_32-apple-watchos${DEPLOYMENT_TARGET})
400
    else()
401
      set(ARCHS armv7k)
402
      set(APPLE_TARGET_TRIPLE_INT arm-apple-watchos${DEPLOYMENT_TARGET})
403
    endif()
404
  else()
405
    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-watchos${DEPLOYMENT_TARGET})
406
  endif()
407
elseif(PLATFORM_INT STREQUAL "WATCHOSCOMBINED")
408
  set(SDK_NAME watchos)
409
  if(MODERN_CMAKE)
410
    if(NOT ARCHS)
411
      if (XCODE_VERSION_INT VERSION_GREATER 10.0)
412
        set(ARCHS armv7k arm64_32 i386)
413
        set(APPLE_TARGET_TRIPLE_INT aarch64_32-i386-apple-watchos${DEPLOYMENT_TARGET})
414
        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=watchos*] "armv7k arm64_32")
415
        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=watchsimulator*] "i386")
416
        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=watchos*] "armv7k arm64_32")
417
        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=watchsimulator*] "i386")
418
      else()
419
        set(ARCHS armv7k i386)
420
        set(APPLE_TARGET_TRIPLE_INT arm-i386-apple-watchos${DEPLOYMENT_TARGET})
421
        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=watchos*] "armv7k")
422
        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=watchsimulator*] "i386")
423
        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=watchos*] "armv7k")
424
        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=watchsimulator*] "i386")
425
      endif()
426
    else()
427
      set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-watchos${DEPLOYMENT_TARGET})
428
    endif()
429
  else()
430
    message(FATAL_ERROR "Please make sure that you are running CMake 3.14+ to make the WATCHOSCOMBINED setting work")
431
  endif()
432
elseif(PLATFORM_INT STREQUAL "SIMULATOR_WATCHOS")
433
  set(SDK_NAME watchsimulator)
434
  if(NOT ARCHS)
435
    set(ARCHS i386)
436
    set(APPLE_TARGET_TRIPLE_INT i386-apple-watchos${DEPLOYMENT_TARGET}-simulator)
437
  else()
438
    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-watchos${DEPLOYMENT_TARGET}-simulator)
439
  endif()
440
elseif(PLATFORM_INT STREQUAL "MAC" OR PLATFORM_INT STREQUAL "MAC_CATALYST")
441
  set(SDK_NAME macosx)
442
  if(NOT ARCHS)
443
    set(ARCHS x86_64)
444
  endif()
445
  string(REPLACE ";" "-" ARCHS_SPLIT "${ARCHS}")
446
  if(PLATFORM_INT STREQUAL "MAC")
447
    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-macosx${DEPLOYMENT_TARGET})
448
  elseif(PLATFORM_INT STREQUAL "MAC_CATALYST")
449
    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET}-macabi)
450
  endif()
451
elseif(PLATFORM_INT MATCHES "^(MAC_ARM64)$|^(MAC_CATALYST_ARM64)$")
452
  set(SDK_NAME macosx)
453
  if(NOT ARCHS)
454
    set(ARCHS arm64)
455
  endif()
456
  string(REPLACE ";" "-" ARCHS_SPLIT "${ARCHS}")
457
  if(PLATFORM_INT STREQUAL "MAC_ARM64")
458
    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-macosx${DEPLOYMENT_TARGET})
459
  elseif(PLATFORM_INT STREQUAL "MAC_CATALYST_ARM64")
460
    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET}-macabi)
461
  endif()
462
else()
463
  message(FATAL_ERROR "Invalid PLATFORM: ${PLATFORM_INT}")
464
endif()
465

466
string(REPLACE ";" " " ARCHS_SPACED "${ARCHS}")
467

468
if(MODERN_CMAKE AND PLATFORM_INT MATCHES ".*COMBINED" AND NOT CMAKE_GENERATOR MATCHES "Xcode")
469
  message(FATAL_ERROR "The COMBINED options only work with Xcode generator, -G Xcode")
470
endif()
471

472
if(CMAKE_GENERATOR MATCHES "Xcode" AND PLATFORM_INT MATCHES "^MAC_CATALYST")
473
  set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libc++")
474
  set(CMAKE_XCODE_ATTRIBUTE_SUPPORTED_PLATFORMS "macosx")
475
  set(CMAKE_XCODE_EFFECTIVE_PLATFORMS "-maccatalyst")
476
  if(NOT DEFINED MACOSX_DEPLOYMENT_TARGET)
477
    set(CMAKE_XCODE_ATTRIBUTE_MACOSX_DEPLOYMENT_TARGET "10.15")
478
  else()
479
    set(CMAKE_XCODE_ATTRIBUTE_MACOSX_DEPLOYMENT_TARGET "${MACOSX_DEPLOYMENT_TARGET}")
480
  endif()
481
elseif(CMAKE_GENERATOR MATCHES "Xcode")
482
  set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libc++")
483
  set(CMAKE_XCODE_ATTRIBUTE_IPHONEOS_DEPLOYMENT_TARGET "${DEPLOYMENT_TARGET}")
484
  if(NOT PLATFORM_INT MATCHES ".*COMBINED")
485
    set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=${SDK_NAME}*] "${ARCHS_SPACED}")
486
    set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=${SDK_NAME}*] "${ARCHS_SPACED}")
487
  endif()
488
endif()
489

490
# If user did not specify the SDK root to use, then query xcodebuild for it.
491
if(DEFINED CMAKE_OSX_SYSROOT_INT)
492
  # Environment variables are always preserved.
493
  set(ENV{_CMAKE_OSX_SYSROOT_INT} "${CMAKE_OSX_SYSROOT_INT}")
494
elseif(DEFINED ENV{_CMAKE_OSX_SYSROOT_INT})
495
  set(CMAKE_OSX_SYSROOT_INT "$ENV{_CMAKE_OSX_SYSROOT_INT}")
496
elseif(NOT DEFINED CMAKE_OSX_SYSROOT_INT)
497
  execute_process(COMMAND ${XCODEBUILD_EXECUTABLE} -version -sdk ${SDK_NAME} Path
498
          OUTPUT_VARIABLE CMAKE_OSX_SYSROOT_INT
499
          ERROR_QUIET
500
          OUTPUT_STRIP_TRAILING_WHITESPACE)
501
endif()
502

503
if (NOT DEFINED CMAKE_OSX_SYSROOT_INT AND NOT DEFINED CMAKE_OSX_SYSROOT)
504
  message(SEND_ERROR "Please make sure that Xcode is installed and that the toolchain"
505
          "is pointing to the correct path. Please run:"
506
          "sudo xcode-select -s /Applications/Xcode.app/Contents/Developer"
507
          "and see if that fixes the problem for you.")
508
  message(FATAL_ERROR "Invalid CMAKE_OSX_SYSROOT: ${CMAKE_OSX_SYSROOT} "
509
          "does not exist.")
510
elseif(DEFINED CMAKE_OSX_SYSROOT_INT)
511
  set(CMAKE_OSX_SYSROOT_INT "${CMAKE_OSX_SYSROOT_INT}" CACHE INTERNAL "")
512
  # Specify the location or name of the platform SDK to be used in CMAKE_OSX_SYSROOT.
513
  set(CMAKE_OSX_SYSROOT "${CMAKE_OSX_SYSROOT_INT}" CACHE INTERNAL "")
514
endif()
515

516
# Use bitcode or not
517
if(NOT DEFINED ENABLE_BITCODE AND NOT ARCHS MATCHES "((^|;|, )(i386|x86_64))+")
518
  # Unless specified, enable bitcode support by default
519
  message(STATUS "[DEFAULTS] Enabling bitcode support by default. ENABLE_BITCODE not provided!")
520
  set(ENABLE_BITCODE ON)
521
elseif(NOT DEFINED ENABLE_BITCODE)
522
  message(STATUS "[DEFAULTS] Disabling bitcode support by default on simulators. ENABLE_BITCODE not provided for override!")
523
  set(ENABLE_BITCODE OFF)
524
endif()
525
set(ENABLE_BITCODE_INT ${ENABLE_BITCODE} CACHE BOOL
526
        "Whether or not to enable bitcode" FORCE)
527
# Use ARC or not
528
if(NOT DEFINED ENABLE_ARC)
529
  # Unless specified, enable ARC support by default
530
  set(ENABLE_ARC ON)
531
  message(STATUS "[DEFAULTS] Enabling ARC support by default. ENABLE_ARC not provided!")
532
endif()
533
set(ENABLE_ARC_INT ${ENABLE_ARC} CACHE BOOL "Whether or not to enable ARC" FORCE)
534
# Use hidden visibility or not
535
if(NOT DEFINED ENABLE_VISIBILITY)
536
  # Unless specified, disable symbols visibility by default
537
  set(ENABLE_VISIBILITY OFF)
538
  message(STATUS "[DEFAULTS] Hiding symbols visibility by default. ENABLE_VISIBILITY not provided!")
539
endif()
540
set(ENABLE_VISIBILITY_INT ${ENABLE_VISIBILITY} CACHE BOOL "Whether or not to hide symbols from the dynamic linker (-fvisibility=hidden)" FORCE)
541
# Set strict compiler checks or not
542
if(NOT DEFINED ENABLE_STRICT_TRY_COMPILE)
543
  # Unless specified, disable strict try_compile()
544
  set(ENABLE_STRICT_TRY_COMPILE OFF)
545
  message(STATUS "[DEFAULTS] Using NON-strict compiler checks by default. ENABLE_STRICT_TRY_COMPILE not provided!")
546
endif()
547
set(ENABLE_STRICT_TRY_COMPILE_INT ${ENABLE_STRICT_TRY_COMPILE} CACHE BOOL
548
        "Whether or not to use strict compiler checks" FORCE)
549

550
# Get the SDK version information.
551
if(DEFINED SDK_VERSION)
552
  # Environment variables are always preserved.
553
  set(ENV{_SDK_VERSION} "${SDK_VERSION}")
554
elseif(DEFINED ENV{_SDK_VERSION})
555
  set(SDK_VERSION "$ENV{_SDK_VERSION}")
556
elseif(NOT DEFINED SDK_VERSION)
557
  execute_process(COMMAND ${XCODEBUILD_EXECUTABLE} -sdk ${CMAKE_OSX_SYSROOT_INT} -version SDKVersion
558
          OUTPUT_VARIABLE SDK_VERSION
559
          ERROR_QUIET
560
          OUTPUT_STRIP_TRAILING_WHITESPACE)
561
endif()
562

563
# Find the Developer root for the specific iOS platform being compiled for
564
# from CMAKE_OSX_SYSROOT.  Should be ../../ from SDK specified in
565
# CMAKE_OSX_SYSROOT. There does not appear to be a direct way to obtain
566
# this information from xcrun or xcodebuild.
567
if (NOT DEFINED CMAKE_DEVELOPER_ROOT AND NOT CMAKE_GENERATOR MATCHES "Xcode")
568
  get_filename_component(PLATFORM_SDK_DIR ${CMAKE_OSX_SYSROOT_INT} PATH)
569
  get_filename_component(CMAKE_DEVELOPER_ROOT ${PLATFORM_SDK_DIR} PATH)
570
  if (NOT EXISTS "${CMAKE_DEVELOPER_ROOT}")
571
    message(FATAL_ERROR "Invalid CMAKE_DEVELOPER_ROOT: ${CMAKE_DEVELOPER_ROOT} does not exist.")
572
  endif()
573
endif()
574

575
# Find the C & C++ compilers for the specified SDK.
576
if(DEFINED CMAKE_C_COMPILER)
577
  # Environment variables are always preserved.
578
  set(ENV{_CMAKE_C_COMPILER} "${CMAKE_C_COMPILER}")
579
elseif(DEFINED ENV{_CMAKE_C_COMPILER})
580
  set(CMAKE_C_COMPILER "$ENV{_CMAKE_C_COMPILER}")
581
  set(CMAKE_ASM_COMPILER ${CMAKE_C_COMPILER})
582
elseif(NOT DEFINED CMAKE_C_COMPILER)
583
  execute_process(COMMAND xcrun -sdk ${CMAKE_OSX_SYSROOT_INT} -find clang
584
          OUTPUT_VARIABLE CMAKE_C_COMPILER
585
          ERROR_QUIET
586
          OUTPUT_STRIP_TRAILING_WHITESPACE)
587
  set(CMAKE_ASM_COMPILER ${CMAKE_C_COMPILER})
588
endif()
589
if(DEFINED CMAKE_CXX_COMPILER)
590
  # Environment variables are always preserved.
591
  set(ENV{_CMAKE_CXX_COMPILER} "${CMAKE_CXX_COMPILER}")
592
elseif(DEFINED ENV{_CMAKE_CXX_COMPILER})
593
  set(CMAKE_CXX_COMPILER "$ENV{_CMAKE_CXX_COMPILER}")
594
elseif(NOT DEFINED CMAKE_CXX_COMPILER)
595
  execute_process(COMMAND xcrun -sdk ${CMAKE_OSX_SYSROOT_INT} -find clang++
596
          OUTPUT_VARIABLE CMAKE_CXX_COMPILER
597
          ERROR_QUIET
598
          OUTPUT_STRIP_TRAILING_WHITESPACE)
599
endif()
600
# Find (Apple's) libtool.
601
if(DEFINED BUILD_LIBTOOL)
602
  # Environment variables are always preserved.
603
  set(ENV{_BUILD_LIBTOOL} "${BUILD_LIBTOOL}")
604
elseif(DEFINED ENV{_BUILD_LIBTOOL})
605
  set(BUILD_LIBTOOL "$ENV{_BUILD_LIBTOOL}")
606
elseif(NOT DEFINED BUILD_LIBTOOL)
607
  execute_process(COMMAND xcrun -sdk ${CMAKE_OSX_SYSROOT_INT} -find libtool
608
          OUTPUT_VARIABLE BUILD_LIBTOOL
609
          ERROR_QUIET
610
          OUTPUT_STRIP_TRAILING_WHITESPACE)
611
endif()
612
# Find the toolchain's provided install_name_tool if none is found on the host
613
if(DEFINED CMAKE_INSTALL_NAME_TOOL)
614
  # Environment variables are always preserved.
615
  set(ENV{_CMAKE_INSTALL_NAME_TOOL} "${CMAKE_INSTALL_NAME_TOOL}")
616
elseif(DEFINED ENV{_CMAKE_INSTALL_NAME_TOOL})
617
  set(CMAKE_INSTALL_NAME_TOOL "$ENV{_CMAKE_INSTALL_NAME_TOOL}")
618
elseif(NOT DEFINED CMAKE_INSTALL_NAME_TOOL)
619
  execute_process(COMMAND xcrun -sdk ${CMAKE_OSX_SYSROOT_INT} -find install_name_tool
620
          OUTPUT_VARIABLE CMAKE_INSTALL_NAME_TOOL_INT
621
          ERROR_QUIET
622
          OUTPUT_STRIP_TRAILING_WHITESPACE)
623
  set(CMAKE_INSTALL_NAME_TOOL ${CMAKE_INSTALL_NAME_TOOL_INT} CACHE INTERNAL "")
624
endif()
625

626
# Configure libtool to be used instead of ar + ranlib to build static libraries.
627
# This is required on Xcode 7+, but should also work on previous versions of
628
# Xcode.
629
get_property(languages GLOBAL PROPERTY ENABLED_LANGUAGES)
630
foreach(lang ${languages})
631
  set(CMAKE_${lang}_CREATE_STATIC_LIBRARY "${BUILD_LIBTOOL} -static -o <TARGET> <LINK_FLAGS> <OBJECTS> " CACHE INTERNAL "")
632
endforeach()
633

634
# CMake 3.14+ support building for iOS, watchOS and tvOS out of the box.
635
if(MODERN_CMAKE)
636
  if(SDK_NAME MATCHES "iphone")
637
    set(CMAKE_SYSTEM_NAME iOS)
638
  elseif(SDK_NAME MATCHES "macosx")
639
    set(CMAKE_SYSTEM_NAME Darwin)
640
  elseif(SDK_NAME MATCHES "appletv")
641
    set(CMAKE_SYSTEM_NAME tvOS)
642
  elseif(SDK_NAME MATCHES "watch")
643
    set(CMAKE_SYSTEM_NAME watchOS)
644
  endif()
645
  # Provide flags for a combined FAT library build on newer CMake versions
646
  if(PLATFORM_INT MATCHES ".*COMBINED")
647
    set(CMAKE_XCODE_ATTRIBUTE_ONLY_ACTIVE_ARCH "NO")
648
    set(CMAKE_IOS_INSTALL_COMBINED YES)
649
  endif()
650
elseif(NOT DEFINED CMAKE_SYSTEM_NAME AND ${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.10")
651
  # Legacy code path prior to CMake 3.14 or fallback if no CMAKE_SYSTEM_NAME specified
652
  set(CMAKE_SYSTEM_NAME iOS)
653
elseif(NOT DEFINED CMAKE_SYSTEM_NAME)
654
  # Legacy code path prior to CMake 3.14 or fallback if no CMAKE_SYSTEM_NAME specified
655
  set(CMAKE_SYSTEM_NAME Darwin)
656
endif()
657
# Standard settings.
658
set(CMAKE_SYSTEM_VERSION ${SDK_VERSION} CACHE INTERNAL "")
659
set(UNIX ON CACHE BOOL "")
660
set(APPLE ON CACHE BOOL "")
661
if(PLATFORM STREQUAL "MAC" OR PLATFORM STREQUAL "MAC_ARM64")
662
  set(IOS OFF CACHE BOOL "")
663
  set(MACOS ON CACHE BOOL "")
664
elseif(PLATFORM STREQUAL "MAC_CATALYST" OR PLATFORM STREQUAL "MAC_CATALYST_ARM64")
665
  set(IOS ON CACHE BOOL "")
666
  set(MACOS ON CACHE BOOL "")
667
else()
668
  set(IOS ON CACHE BOOL "")
669
endif()
670
set(CMAKE_AR ar CACHE FILEPATH "" FORCE)
671
set(CMAKE_RANLIB ranlib CACHE FILEPATH "" FORCE)
672
set(CMAKE_STRIP strip CACHE FILEPATH "" FORCE)
673
# Set the architectures for which to build.
674
set(CMAKE_OSX_ARCHITECTURES ${ARCHS} CACHE INTERNAL "")
675
# Change the type of target generated for try_compile() so it'll work when cross-compiling, weak compiler checks
676
if(NOT ENABLE_STRICT_TRY_COMPILE_INT)
677
  set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
678
endif()
679
# All iOS/Darwin specific settings - some may be redundant.
680
set(CMAKE_MACOSX_BUNDLE YES)
681
set(CMAKE_XCODE_ATTRIBUTE_CODE_SIGNING_REQUIRED "NO")
682
set(CMAKE_SHARED_LIBRARY_PREFIX "lib")
683
set(CMAKE_SHARED_LIBRARY_SUFFIX ".dylib")
684
set(CMAKE_SHARED_MODULE_PREFIX "lib")
685
set(CMAKE_SHARED_MODULE_SUFFIX ".so")
686
set(CMAKE_C_COMPILER_ABI ELF)
687
set(CMAKE_CXX_COMPILER_ABI ELF)
688
set(CMAKE_C_HAS_ISYSROOT 1)
689
set(CMAKE_CXX_HAS_ISYSROOT 1)
690
set(CMAKE_MODULE_EXISTS 1)
691
set(CMAKE_DL_LIBS "")
692
set(CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG "-compatibility_version ")
693
set(CMAKE_C_OSX_CURRENT_VERSION_FLAG "-current_version ")
694
set(CMAKE_CXX_OSX_COMPATIBILITY_VERSION_FLAG "${CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG}")
695
set(CMAKE_CXX_OSX_CURRENT_VERSION_FLAG "${CMAKE_C_OSX_CURRENT_VERSION_FLAG}")
696

697
if(ARCHS MATCHES "((^|;|, )(arm64|arm64e|x86_64))+")
698
  set(CMAKE_C_SIZEOF_DATA_PTR 8)
699
  set(CMAKE_CXX_SIZEOF_DATA_PTR 8)
700
  if(ARCHS MATCHES "((^|;|, )(arm64|arm64e))+")
701
    set(CMAKE_SYSTEM_PROCESSOR "aarch64")
702
  else()
703
    set(CMAKE_SYSTEM_PROCESSOR "x86_64")
704
  endif()
705
else()
706
  set(CMAKE_C_SIZEOF_DATA_PTR 4)
707
  set(CMAKE_CXX_SIZEOF_DATA_PTR 4)
708
  set(CMAKE_SYSTEM_PROCESSOR "arm")
709
endif()
710

711
# Note that only Xcode 7+ supports the newer more specific:
712
# -m${SDK_NAME}-version-min flags, older versions of Xcode use:
713
# -m(ios/ios-simulator)-version-min instead.
714
if(${CMAKE_VERSION} VERSION_LESS "3.11")
715
  if(PLATFORM_INT STREQUAL "OS" OR PLATFORM_INT STREQUAL "OS64")
716
    if(XCODE_VERSION_INT VERSION_LESS 7.0)
717
      set(SDK_NAME_VERSION_FLAGS
718
              "-mios-version-min=${DEPLOYMENT_TARGET}")
719
    else()
720
      # Xcode 7.0+ uses flags we can build directly from SDK_NAME.
721
      set(SDK_NAME_VERSION_FLAGS
722
              "-m${SDK_NAME}-version-min=${DEPLOYMENT_TARGET}")
723
    endif()
724
  elseif(PLATFORM_INT STREQUAL "TVOS")
725
    set(SDK_NAME_VERSION_FLAGS
726
            "-mtvos-version-min=${DEPLOYMENT_TARGET}")
727
  elseif(PLATFORM_INT STREQUAL "SIMULATOR_TVOS")
728
    set(SDK_NAME_VERSION_FLAGS
729
            "-mtvos-simulator-version-min=${DEPLOYMENT_TARGET}")
730
  elseif(PLATFORM_INT STREQUAL "WATCHOS")
731
    set(SDK_NAME_VERSION_FLAGS
732
            "-mwatchos-version-min=${DEPLOYMENT_TARGET}")
733
  elseif(PLATFORM_INT STREQUAL "SIMULATOR_WATCHOS")
734
    set(SDK_NAME_VERSION_FLAGS
735
            "-mwatchos-simulator-version-min=${DEPLOYMENT_TARGET}")
736
  elseif(PLATFORM_INT STREQUAL "MAC")
737
    set(SDK_NAME_VERSION_FLAGS
738
            "-mmacosx-version-min=${DEPLOYMENT_TARGET}")
739
  else()
740
    # SIMULATOR or SIMULATOR64 both use -mios-simulator-version-min.
741
    set(SDK_NAME_VERSION_FLAGS
742
            "-mios-simulator-version-min=${DEPLOYMENT_TARGET}")
743
  endif()
744
elseif(NOT PLATFORM_INT MATCHES "^MAC_CATALYST")
745
  # Newer versions of CMake sets the version min flags correctly, skip this for Mac Catalyst targets
746
  set(CMAKE_OSX_DEPLOYMENT_TARGET "${DEPLOYMENT_TARGET}")
747
endif()
748

749
if(DEFINED APPLE_TARGET_TRIPLE_INT)
750
  set(APPLE_TARGET_TRIPLE ${APPLE_TARGET_TRIPLE_INT} CACHE INTERNAL "")
751
  set(CMAKE_C_COMPILER_TARGET ${APPLE_TARGET_TRIPLE})
752
  set(CMAKE_CXX_COMPILER_TARGET ${APPLE_TARGET_TRIPLE})
753
  set(CMAKE_ASM_COMPILER_TARGET ${APPLE_TARGET_TRIPLE})
754
endif()
755

756
if(PLATFORM_INT MATCHES "^MAC_CATALYST")
757
  set(C_TARGET_FLAGS "-isystem ${CMAKE_OSX_SYSROOT_INT}/System/iOSSupport/usr/include -iframework ${CMAKE_OSX_SYSROOT_INT}/System/iOSSupport/System/Library/Frameworks")
758
endif()
759

760
if(ENABLE_BITCODE_INT)
761
  set(BITCODE "-fembed-bitcode")
762
  set(CMAKE_XCODE_ATTRIBUTE_BITCODE_GENERATION_MODE "bitcode")
763
  set(CMAKE_XCODE_ATTRIBUTE_ENABLE_BITCODE "YES")
764
else()
765
  set(BITCODE "")
766
  set(CMAKE_XCODE_ATTRIBUTE_ENABLE_BITCODE "NO")
767
endif()
768

769
if(ENABLE_ARC_INT)
770
  set(FOBJC_ARC "-fobjc-arc")
771
  set(CMAKE_XCODE_ATTRIBUTE_CLANG_ENABLE_OBJC_ARC "YES")
772
else()
773
  set(FOBJC_ARC "-fno-objc-arc")
774
  set(CMAKE_XCODE_ATTRIBUTE_CLANG_ENABLE_OBJC_ARC "NO")
775
endif()
776

777
if(NAMED_LANGUAGE_SUPPORT_INT)
778
  set(OBJC_VARS "-fobjc-abi-version=2 -DOBJC_OLD_DISPATCH_PROTOTYPES=0")
779
  set(OBJC_LEGACY_VARS "")
780
else()
781
  set(OBJC_VARS "")
782
  set(OBJC_LEGACY_VARS "-fobjc-abi-version=2 -DOBJC_OLD_DISPATCH_PROTOTYPES=0")
783
endif()
784

785
if(NOT ENABLE_VISIBILITY_INT)
786
  foreach(lang ${languages})
787
    set(CMAKE_${lang}_VISIBILITY_PRESET "hidden" CACHE INTERNAL "")
788
  endforeach()
789
  set(CMAKE_XCODE_ATTRIBUTE_GCC_SYMBOLS_PRIVATE_EXTERN "YES")
790
  set(VISIBILITY "-fvisibility=hidden -fvisibility-inlines-hidden")
791
else()
792
  foreach(lang ${languages})
793
    set(CMAKE_${lang}_VISIBILITY_PRESET "default" CACHE INTERNAL "")
794
  endforeach()
795
  set(CMAKE_XCODE_ATTRIBUTE_GCC_SYMBOLS_PRIVATE_EXTERN "NO")
796
  set(VISIBILITY "-fvisibility=default")
797
endif()
798

799
if(DEFINED APPLE_TARGET_TRIPLE)
800
  set(APPLE_TARGET_TRIPLE_FLAG "-target ${APPLE_TARGET_TRIPLE}")
801
endif()
802

803
#Check if Xcode generator is used, since that will handle these flags automagically
804
if(CMAKE_GENERATOR MATCHES "Xcode")
805
  message(STATUS "Not setting any manual command-line buildflags, since Xcode is selected as generator. Modifying the Xcode build-settings directly instead.")
806
else()
807
  set(CMAKE_C_FLAGS "${C_TARGET_FLAGS} ${APPLE_TARGET_TRIPLE_FLAG} ${SDK_NAME_VERSION_FLAGS} ${OBJC_LEGACY_VARS} ${BITCODE} ${VISIBILITY} ${CMAKE_C_FLAGS}")
808
  set(CMAKE_C_FLAGS_DEBUG "-O0 -g ${CMAKE_C_FLAGS_DEBUG}")
809
  set(CMAKE_C_FLAGS_MINSIZEREL "-DNDEBUG -Os ${CMAKE_C_FLAGS_MINSIZEREL}")
810
  set(CMAKE_C_FLAGS_RELWITHDEBINFO "-DNDEBUG -O2 -g ${CMAKE_C_FLAGS_RELWITHDEBINFO}")
811
  set(CMAKE_C_FLAGS_RELEASE "-DNDEBUG -O3 ${CMAKE_C_FLAGS_RELEASE}")
812
  set(CMAKE_CXX_FLAGS "${C_TARGET_FLAGS} ${APPLE_TARGET_TRIPLE_FLAG} ${SDK_NAME_VERSION_FLAGS} ${OBJC_LEGACY_VARS} ${BITCODE} ${VISIBILITY} ${CMAKE_CXX_FLAGS}")
813
  set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g ${CMAKE_CXX_FLAGS_DEBUG}")
814
  set(CMAKE_CXX_FLAGS_MINSIZEREL "-DNDEBUG -Os ${CMAKE_CXX_FLAGS_MINSIZEREL}")
815
  set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-DNDEBUG -O2 -g ${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")
816
  set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG -O3 ${CMAKE_CXX_FLAGS_RELEASE}")
817
  if(NAMED_LANGUAGE_SUPPORT_INT)
818
    set(CMAKE_OBJC_FLAGS "${C_TARGET_FLAGS} ${APPLE_TARGET_TRIPLE_FLAG} ${SDK_NAME_VERSION_FLAGS} ${BITCODE} ${VISIBILITY} ${FOBJC_ARC} ${OBJC_VARS} ${CMAKE_OBJC_FLAGS}")
819
    set(CMAKE_OBJC_FLAGS_DEBUG "-O0 -g ${CMAKE_OBJC_FLAGS_DEBUG}")
820
    set(CMAKE_OBJC_FLAGS_MINSIZEREL "-DNDEBUG -Os ${CMAKE_OBJC_FLAGS_MINSIZEREL}")
821
    set(CMAKE_OBJC_FLAGS_RELWITHDEBINFO "-DNDEBUG -O2 -g ${CMAKE_OBJC_FLAGS_RELWITHDEBINFO}")
822
    set(CMAKE_OBJC_FLAGS_RELEASE "-DNDEBUG -O3 ${CMAKE_OBJC_FLAGS_RELEASE}")
823
    set(CMAKE_OBJCXX_FLAGS "${C_TARGET_FLAGS} ${APPLE_TARGET_TRIPLE_FLAG} ${SDK_NAME_VERSION_FLAGS} ${BITCODE} ${VISIBILITY} ${FOBJC_ARC} ${OBJC_VARS} ${CMAKE_OBJCXX_FLAGS}")
824
    set(CMAKE_OBJCXX_FLAGS_DEBUG "-O0 -g ${CMAKE_OBJCXX_FLAGS_DEBUG}")
825
    set(CMAKE_OBJCXX_FLAGS_MINSIZEREL "-DNDEBUG -Os ${CMAKE_OBJCXX_FLAGS_MINSIZEREL}")
826
    set(CMAKE_OBJCXX_FLAGS_RELWITHDEBINFO "-DNDEBUG -O2 -g ${CMAKE_OBJCXX_FLAGS_RELWITHDEBINFO}")
827
    set(CMAKE_OBJCXX_FLAGS_RELEASE "-DNDEBUG -O3 ${CMAKE_OBJCXX_FLAGS_RELEASE}")
828
  endif()
829
  set(CMAKE_C_LINK_FLAGS "${C_TARGET_FLAGS} ${SDK_NAME_VERSION_FLAGS} -Wl,-search_paths_first ${CMAKE_C_LINK_FLAGS}")
830
  set(CMAKE_CXX_LINK_FLAGS "${C_TARGET_FLAGS} ${SDK_NAME_VERSION_FLAGS}  -Wl,-search_paths_first ${CMAKE_CXX_LINK_FLAGS}")
831
  if(NAMED_LANGUAGE_SUPPORT_INT)
832
    set(CMAKE_OBJC_LINK_FLAGS "${C_TARGET_FLAGS} ${SDK_NAME_VERSION_FLAGS} -Wl,-search_paths_first ${CMAKE_OBJC_LINK_FLAGS}")
833
    set(CMAKE_OBJCXX_LINK_FLAGS "${C_TARGET_FLAGS} ${SDK_NAME_VERSION_FLAGS} -Wl,-search_paths_first ${CMAKE_OBJCXX_LINK_FLAGS}")
834
  endif()
835
  set(CMAKE_ASM_FLAGS "${CMAKE_C_FLAGS} -x assembler-with-cpp -arch ${CMAKE_OSX_ARCHITECTURES} ${APPLE_TARGET_TRIPLE_FLAG}")
836
endif()
837

838
## Print status messages to inform of the current state
839
message(STATUS "Configuring ${SDK_NAME} build for platform: ${PLATFORM_INT}, architecture(s): ${ARCHS}")
840
message(STATUS "Using SDK: ${CMAKE_OSX_SYSROOT_INT}")
841
message(STATUS "Using C compiler: ${CMAKE_C_COMPILER}")
842
message(STATUS "Using CXX compiler: ${CMAKE_CXX_COMPILER}")
843
message(STATUS "Using libtool: ${BUILD_LIBTOOL}")
844
message(STATUS "Using install name tool: ${CMAKE_INSTALL_NAME_TOOL}")
845
if(DEFINED APPLE_TARGET_TRIPLE)
846
  message(STATUS "Autoconf target triple: ${APPLE_TARGET_TRIPLE}")
847
endif()
848
message(STATUS "Using minimum deployment version: ${DEPLOYMENT_TARGET}"
849
        " (SDK version: ${SDK_VERSION})")
850
if(MODERN_CMAKE)
851
  message(STATUS "Merging integrated CMake 3.14+ iOS,tvOS,watchOS,macOS toolchain(s) with this toolchain!")
852
  if(PLATFORM_INT MATCHES ".*COMBINED")
853
    message(STATUS "Will combine built (static) artifacts into FAT lib...")
854
  endif()
855
endif()
856
if(CMAKE_GENERATOR MATCHES "Xcode")
857
  message(STATUS "Using Xcode version: ${XCODE_VERSION_INT}")
858
endif()
859
message(STATUS "CMake version: ${CMAKE_VERSION}")
860
if(DEFINED SDK_NAME_VERSION_FLAGS)
861
  message(STATUS "Using version flags: ${SDK_NAME_VERSION_FLAGS}")
862
endif()
863
message(STATUS "Using a data_ptr size of: ${CMAKE_CXX_SIZEOF_DATA_PTR}")
864
if(ENABLE_BITCODE_INT)
865
  message(STATUS "Bitcode: Enabled")
866
else()
867
  message(STATUS "Bitcode: Disabled")
868
endif()
869

870
if(ENABLE_ARC_INT)
871
  message(STATUS "ARC: Enabled")
872
else()
873
  message(STATUS "ARC: Disabled")
874
endif()
875

876
if(ENABLE_VISIBILITY_INT)
877
  message(STATUS "Hiding symbols: Disabled")
878
else()
879
  message(STATUS "Hiding symbols: Enabled")
880
endif()
881

882
# Set global properties
883
set_property(GLOBAL PROPERTY PLATFORM "${PLATFORM}")
884
set_property(GLOBAL PROPERTY APPLE_TARGET_TRIPLE "${APPLE_TARGET_TRIPLE_INT}")
885
set_property(GLOBAL PROPERTY SDK_VERSION "${SDK_VERSION}")
886
set_property(GLOBAL PROPERTY XCODE_VERSION "${XCODE_VERSION_INT}")
887
set_property(GLOBAL PROPERTY OSX_ARCHITECTURES "${CMAKE_OSX_ARCHITECTURES}")
888

889
# Export configurable variables for the try_compile() command.
890
set(CMAKE_TRY_COMPILE_PLATFORM_VARIABLES
891
        PLATFORM
892
        XCODE_VERSION_INT
893
        SDK_VERSION
894
        NAMED_LANGUAGE_SUPPORT
895
        DEPLOYMENT_TARGET
896
        CMAKE_DEVELOPER_ROOT
897
        CMAKE_OSX_SYSROOT_INT
898
        ENABLE_BITCODE
899
        ENABLE_ARC
900
        CMAKE_ASM_COMPILER
901
        CMAKE_C_COMPILER
902
        CMAKE_C_COMPILER_TARGET
903
        CMAKE_CXX_COMPILER
904
        CMAKE_CXX_COMPILER_TARGET
905
        BUILD_LIBTOOL
906
        CMAKE_INSTALL_NAME_TOOL
907
        CMAKE_C_FLAGS
908
        CMAKE_C_DEBUG
909
        CMAKE_C_MINSIZEREL
910
        CMAKE_C_RELWITHDEBINFO
911
        CMAKE_C_RELEASE
912
        CMAKE_CXX_FLAGS
913
        CMAKE_CXX_FLAGS_DEBUG
914
        CMAKE_CXX_FLAGS_MINSIZEREL
915
        CMAKE_CXX_FLAGS_RELWITHDEBINFO
916
        CMAKE_CXX_FLAGS_RELEASE
917
        CMAKE_C_LINK_FLAGS
918
        CMAKE_CXX_LINK_FLAGS
919
        CMAKE_ASM_FLAGS
920
)
921

922
if(NAMED_LANGUAGE_SUPPORT_INT)
923
  list(APPEND CMAKE_TRY_COMPILE_PLATFORM_VARIABLES 
924
        CMAKE_OBJC_FLAGS
925
        CMAKE_OBJC_DEBUG
926
        CMAKE_OBJC_MINSIZEREL
927
        CMAKE_OBJC_RELWITHDEBINFO
928
        CMAKE_OBJC_RELEASE
929
        CMAKE_OBJCXX_FLAGS
930
        CMAKE_OBJCXX_DEBUG
931
        CMAKE_OBJCXX_MINSIZEREL
932
        CMAKE_OBJCXX_RELWITHDEBINFO
933
        CMAKE_OBJCXX_RELEASE
934
        CMAKE_OBJC_LINK_FLAGS
935
        CMAKE_OBJCXX_LINK_FLAGS
936
  )
937
endif()
938

939
set(CMAKE_PLATFORM_HAS_INSTALLNAME 1)
940
set(CMAKE_SHARED_LINKER_FLAGS "-rpath @executable_path/Frameworks -rpath @loader_path/Frameworks")
941
set(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-dynamiclib -Wl,-headerpad_max_install_names")
942
set(CMAKE_SHARED_MODULE_CREATE_C_FLAGS "-bundle -Wl,-headerpad_max_install_names")
943
set(CMAKE_SHARED_MODULE_LOADER_C_FLAG "-Wl,-bundle_loader,")
944
set(CMAKE_SHARED_MODULE_LOADER_CXX_FLAG "-Wl,-bundle_loader,")
945
set(CMAKE_FIND_LIBRARY_SUFFIXES ".tbd" ".dylib" ".so" ".a")
946
set(CMAKE_SHARED_LIBRARY_SONAME_C_FLAG "-install_name")
947

948
# Set the find root to the SDK developer roots.
949
# Note: CMAKE_FIND_ROOT_PATH is only useful when cross-compiling. Thus, do not set on macOS builds.
950
if(NOT PLATFORM_INT MATCHES "^MAC.*$")
951
  list(APPEND CMAKE_FIND_ROOT_PATH "${CMAKE_OSX_SYSROOT_INT}" CACHE INTERNAL "")
952
  set(CMAKE_IGNORE_PATH "/System/Library/Frameworks;/usr/local/lib" CACHE INTERNAL "")
953
endif()
954

955
# Default to searching for frameworks first.
956
set(CMAKE_FIND_FRAMEWORK FIRST)
957

958
# Set up the default search directories for frameworks.
959
if(PLATFORM_INT MATCHES "^MAC_CATALYST") 
960
  set(CMAKE_FRAMEWORK_PATH
961
          ${CMAKE_DEVELOPER_ROOT}/Library/PrivateFrameworks
962
          ${CMAKE_OSX_SYSROOT_INT}/System/Library/Frameworks
963
          ${CMAKE_OSX_SYSROOT_INT}/System/iOSSupport/System/Library/Frameworks
964
          ${CMAKE_FRAMEWORK_PATH} CACHE INTERNAL "")
965
else()
966
  set(CMAKE_FRAMEWORK_PATH
967
          ${CMAKE_DEVELOPER_ROOT}/Library/PrivateFrameworks
968
          ${CMAKE_OSX_SYSROOT_INT}/System/Library/Frameworks
969
          ${CMAKE_FRAMEWORK_PATH} CACHE INTERNAL "")
970
endif()
971

972
# By default, search both the specified iOS SDK and the remainder of the host filesystem.
973
if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
974
  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH CACHE INTERNAL "")
975
endif()
976
if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
977
  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH CACHE INTERNAL "")
978
endif()
979
if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
980
  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH CACHE INTERNAL "")
981
endif()
982
if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
983
  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE BOTH CACHE INTERNAL "")
984
endif()
985

986
#
987
# Some helper-macros below to simplify and beautify the CMakeFile
988
#
989

990
# This little macro lets you set any Xcode specific property.
991
macro(set_xcode_property TARGET XCODE_PROPERTY XCODE_VALUE XCODE_RELVERSION)
992
  set(XCODE_RELVERSION_I "${XCODE_RELVERSION}")
993
  if(XCODE_RELVERSION_I STREQUAL "All")
994
    set_property(TARGET ${TARGET} PROPERTY XCODE_ATTRIBUTE_${XCODE_PROPERTY} "${XCODE_VALUE}")
995
  else()
996
    set_property(TARGET ${TARGET} PROPERTY XCODE_ATTRIBUTE_${XCODE_PROPERTY}[variant=${XCODE_RELVERSION_I}] "${XCODE_VALUE}")
997
  endif()
998
endmacro(set_xcode_property)
999

1000
# This macro lets you find executable programs on the host system.
1001
macro(find_host_package)
1002
  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
1003
  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER)
1004
  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER)
1005
  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE NEVER)
1006
  set(_TOOLCHAIN_IOS ${IOS})
1007
  set(IOS OFF)
1008
  find_package(${ARGN})
1009
  set(IOS ${_TOOLCHAIN_IOS})
1010
  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH)
1011
  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH)
1012
  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH)
1013
  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE BOTH)
1014
endmacro(find_host_package)
1015