<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Issue</th>
<td>
<a href=https://github.com/llvm/llvm-project/issues/125309>125309</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>
compiler_rt build for watchOS/tvOS
</td>
</tr>
<tr>
<th>Labels</th>
<td>
</td>
</tr>
<tr>
<th>Assignees</th>
<td>
</td>
</tr>
<tr>
<th>Reporter</th>
<td>
DmT021
</td>
</tr>
</table>
<pre>
compiler_rt doesn't build for watchOS/tvOS, because the following functions are explicitly marked unavailable.
```C
pid_t fork(void) __WATCHOS_PROHIBITED __TVOS_PROHIBITED;
int execve(const char * __file, char * const * __argv, char * const * __envp) __WATCHOS_PROHIBITED __TVOS_PROHIBITED;
int posix_spawn_file_actions_init(posix_spawn_file_actions_t *) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
int posix_spawn_file_actions_destroy(posix_spawn_file_actions_t *) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *, int,
int) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
int posix_spawn_file_actions_addclose(posix_spawn_file_actions_t *, int) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
int posix_spawnattr_init(posix_spawnattr_t *) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
int posix_spawnattr_destroy(posix_spawnattr_t *) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
int posix_spawnattr_setflags(posix_spawnattr_t *, short) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
int posix_spawn(pid_t * __restrict, const char * __restrict,
const posix_spawn_file_actions_t *,
const posix_spawnattr_t * __restrict,
char *const __argv[__restrict],
char *const __envp[__restrict]) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
```
<details>
<summary>Log</summary>
```
[4675/5208][ 89%][1646.297s] Performing build step for 'compiler-rt'
[6522/8323][ 78%][135.376s] Building CXX object lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.watchossim.dir/sanitizer_mac.cpp.o
FAILED: lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.watchossim.dir/sanitizer_mac.cpp.o
/opt/homebrew/bin/sccache /Users/dmt021/w/swift-project/build/Ninja-RelWithDebInfoAssert/llvm-macosx-arm64/bin/clang++ -DHAVE_RPC_XDR_H=1 -I/Users/dmt021/w/swift-project/llvm-project/compiler-rt/lib/sanitizer_common/.. -Wall -Wno-unused-parameter -O2 -g -DNDEBUG -std=c++17 -arch arm64 -arch i386 -arch x86_64 -isysroot /Applications/Xcode16.2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.2.sdk -stdlib=libc++ -mwatchos-simulator-version-min=2.0 -isysroot /Applications/Xcode16.2.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator11.2.sdk -fPIC -fno-builtin -fno-exceptions -funwind-tables -fno-stack-protector -fno-sanitize=safe-stack -fvisibility=hidden -fno-lto -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta -O3 -g -Wno-gnu -Wno-variadic-macros -Wno-c99-extensions -nostdinc++ -Wno-format -fno-rtti -Wframe-larger-than=570 -Wglobal-constructors -MD -MT lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.watchossim.dir/sanitizer_mac.cpp.o -MF lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.watchossim.dir/sanitizer_mac.cpp.o.d -o lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.watchossim.dir/sanitizer_mac.cpp.o -c /Users/dmt021/w/swift-project/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
/Users/dmt021/w/swift-project/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp:253:10: error: 'fork' is unavailable: not available on watchOS
253 | return fork();
| ^
/Applications/Xcode16.2.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator11.2.sdk/usr/include/unistd.h:447:8: note: 'fork' has been explicitly marked unavailable here
447 | pid_t fork(void) __WATCHOS_PROHIBITED __TVOS_PROHIBITED;
| ^
/Users/dmt021/w/swift-project/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp:299:9: error: 'posix_spawn_file_actions_init' is unavailable: not available on watchOS
299 | res = posix_spawn_file_actions_init(&acts);
| ^
/Applications/Xcode16.2.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator11.2.sdk/usr/include/spawn.h:83:9: note: 'posix_spawn_file_actions_init' has been explicitly marked unavailable here
83 | int posix_spawn_file_actions_init(posix_spawn_file_actions_t *) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
| ^
/Users/dmt021/w/swift-project/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp:303:5: error: 'posix_spawn_file_actions_destroy' is unavailable: not available on watchOS
303 | posix_spawn_file_actions_destroy(&acts);
| ^
/Applications/Xcode16.2.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator11.2.sdk/usr/include/spawn.h:81:9: note: 'posix_spawn_file_actions_destroy' has been explicitly marked unavailable here
81 | int posix_spawn_file_actions_destroy(posix_spawn_file_actions_t *) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
| ^
/Users/dmt021/w/swift-project/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp:306:9: error: 'posix_spawn_file_actions_adddup2' is unavailable: not available on watchOS
306 | res = posix_spawn_file_actions_adddup2(&acts, secondary_fd, STDIN_FILENO) ||
| ^
/Applications/Xcode16.2.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator11.2.sdk/usr/include/spawn.h:74:9: note: 'posix_spawn_file_actions_adddup2' has been explicitly marked unavailable here
74 | int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *, int,
| ^
/Users/dmt021/w/swift-project/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp:307:9: error: 'posix_spawn_file_actions_adddup2' is unavailable: not available on watchOS
307 | posix_spawn_file_actions_adddup2(&acts, secondary_fd, STDOUT_FILENO) ||
| ^
/Applications/Xcode16.2.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator11.2.sdk/usr/include/spawn.h:74:9: note: 'posix_spawn_file_actions_adddup2' has been explicitly marked unavailable here
74 | int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *, int,
| ^
/Users/dmt021/w/swift-project/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp:308:9: error: 'posix_spawn_file_actions_addclose' is unavailable: not available on watchOS
308 | posix_spawn_file_actions_addclose(&acts, secondary_fd);
| ^
/Applications/Xcode16.2.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator11.2.sdk/usr/include/spawn.h:72:9: note: 'posix_spawn_file_actions_addclose' has been explicitly marked unavailable here
72 | int posix_spawn_file_actions_addclose(posix_spawn_file_actions_t *, int) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
| ^
/Users/dmt021/w/swift-project/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp:313:9: error: 'posix_spawnattr_init' is unavailable: not available on watchOS
313 | res = posix_spawnattr_init(&attrs);
| ^
/Applications/Xcode16.2.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator11.2.sdk/usr/include/spawn.h:99:9: note: 'posix_spawnattr_init' has been explicitly marked unavailable here
99 | int posix_spawnattr_init(posix_spawnattr_t *) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
| ^
/Users/dmt021/w/swift-project/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp:317:5: error: 'posix_spawnattr_destroy' is unavailable: not available on watchOS
317 | posix_spawnattr_destroy(&attrs);
| ^
/Applications/Xcode16.2.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator11.2.sdk/usr/include/spawn.h:85:9: note: 'posix_spawnattr_destroy' has been explicitly marked unavailable here
85 | int posix_spawnattr_destroy(posix_spawnattr_t *) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
| ^
/Users/dmt021/w/swift-project/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp:322:9: error: 'posix_spawnattr_setflags' is unavailable: not available on watchOS
322 | res = posix_spawnattr_setflags(&attrs, POSIX_SPAWN_CLOEXEC_DEFAULT);
| ^
/Applications/Xcode16.2.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator11.2.sdk/usr/include/spawn.h:104:9: note: 'posix_spawnattr_setflags' has been explicitly marked unavailable here
104 | int posix_spawnattr_setflags(posix_spawnattr_t *, short) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
| ^
/Users/dmt021/w/swift-project/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp:328:9: error: 'posix_spawn' is unavailable: not available on watchOS
328 | res = posix_spawn(pid, argv[0], &acts, &attrs, argv_casted, envp_casted);
| ^
/Applications/Xcode16.2.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator11.2.sdk/usr/include/spawn.h:60:9: note: 'posix_spawn' has been explicitly marked unavailable here
60 | int posix_spawn(pid_t * __restrict, const char * __restrict,
| ^
/Users/dmt021/w/swift-project/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp:379:10: error: 'execve' is unavailable: not available on watchOS
379 | return execve(filename, argv, envp);
| ^
/Applications/Xcode16.2.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator11.2.sdk/usr/include/unistd.h:445:6: note: 'execve' has been explicitly marked unavailable here
445 | int execve(const char * __file, char * const * __argv, char * const * __envp) __WATCHOS_PROHIBITED __TVOS_PROHIBITED;
| ^
```
</details>
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJzsmllzo7rywD-N8qKCAslsD37AxvzH9c8kqUlmkjdKFrKtMyBRkuwk99PfEnjLajvnTpZTJ5VKQDRSq_XrprUQrflMMNYHwQAE2QlZmLlU_ay-8pB_MpHlfZ_KuuEVU4UysJRMC4AiAycLXpVwKhW8JYbOzy8Bys3S_hvCCaNkoRk0cwansqrkLRczOF0IargUGhLFILtrKk65qe5hTdRvVsKFIEvCKzKpmAu8FIRe9zsEXtrwsjDAS2yDvwGKl5KXACWwKK7Tq-G388vi4sf5t_FgfDXKYFFc_XpQAvAAeCkXbQ3sjtElAyimUmgD6ZwoCFAKi2LKK2bV3xR1Et1DombLFx8ysWzeoA5spOZ3hW7IrWhbL0hnoYILbgCKX3zeNty1mF6Mi_RXOj5NB6cjgOKaUKkBin3PDQBKrM68LUCu196vX_p5tvtaO4pWbgjN0v5PDlCzZNooef8FNCVlWS4adICmQ2hBQZa67uqdVLc_r6lPK6nZ4fp_jNbEGPUMvG3xh5HQtv4sqp9AL83MtCIz_bJiQ6jnUr3fkO6oYZWykXcV5pS1IaemjYOPo-fOQ-s6EK5E9vL6kvTWBk9rX7fbvbSKzsFgRy7Idqp-JN2G6yfS72DezTfNXnspwMOSGcIrDfCo1RXgoV7UNVH3AI9O5QzgIUD5tqgTav_sVhUMemEUAJQHyIttZ4IBjBOAgu7aD3uhi5JIgyCDF0xNpartF7n7hmvDmvZDDlC0_tY7lreoqzoMEAIojzHCq6qjeFs1DlwchW3NA1udrXd4cwPl5C9GDaz4xHaACG74f5gqqKxrKQDKh9_Jb5bzimmA8h9Xl2uJYSvgriyoee2WXD2ooibUpU3jSuCleTo-tR_U9E83BFAuGwNQPpc1myh2C1A-4bZ-TSmhcwYByn9qpmwrZW085AOUWyl9y6fGaZS09rBvWSsBlJ9x8RdxfrDqmpt5xiZjMZWp1sxaPq-qZe208N05RNVhb9McrYiYATQAaACd7Fv6a1T8uBgWN9mP4hvAmQ-d8aGatI1sbx-Mff6iPV0XOtekqqBzLaSzEAvNSqchitTMMAWdcwSdGXSys2w0-Pl_0NGmBDijncp-BB2i6By2nVpdcxyHq8u7OCxsOdf3WklpvT9PG5spkjZoAJTfUFkyP3SRS5rGjq8UhgljH2VsySrZMDuMFxUxlnNb_p3Q88sbt1kVPZK8zP5_K-QHLnJ1-bvV29oAZxWf0LXB6xUujub1oiJGKmfJlOZSODUXAGfI9f7X2l_bJi_X7e3pxUNh31_3ZnoxHkJnKqRj-TNcdDfsjrKmS8qd6ULcclE6xmbgunuuDaG_LSOGUSPVqnAFBcCZJlPWCUFnuuSaT3jFzT3A2ZyXJVu1UhkJnWszV4yUjn3F3D--dxSbMsUEZU-eTJgh0DnHLVaWuZlYdBdLojgpObWeoqTuCmmSOOzOMKG7bgmpTcnFZgitjLUfMZ1yyhgOneupBdipiJox5Zg5sYMZRB50rmeVnJDKaT8eamHNoKHzPYPO96s_GnWg8z3_ow24JXTkH-4CPTguvi0aPWm0i9Xv2iJOUYABTn3PfoiYUlLZC4CibrYaQa53Z7f2oZAGbgqgFJtZtP22owBDEA0hhIqZhRLrWe8mj2jT7lYEBKOux58izgCUL7SV4oJWi5LZe8G1Kd05wGmvFwGcxqvus0c2mhMNJ4yJ11cG4Jwp1lqg14taC3QJ6t9YF3jGmO-NT5IAnCaP6dmzOnA8VkmywUpDgLO96w8AhYQa_RW5azvVYhfjtXF3qNtr22NxhHHns19kWedDeceeHZLgYN43c_ejkcfeOpK-sriyXRr4Z_DuH8P7jm2PR97fj_ynWiL8YOrDo6L8ZsnyDdSHhwb67brohv0h1IxKURJ1X0xLe395lY3Pinx8Ojo7tyYH0dD-flH_iHrH-MfOKBztH1Fvv3-8bWH6w1MW7EXvBnO0CeH71sgPQvn859W_LP_L8i7L8bEsrzZj3gBzfDDM6w2fF2n-yklKhI4Ed2Px48lFB5H7-fbXPtYpfLzHKXb2-o73Ax-_nKHsbiJa-I1RXzwl387vn6f9gSmPBHw1qf-0m7EfTHG0Z6b5cHP4WJCxHz03v3y04_zPgDgODoD47dPJOHiV48-wf_-xKCN0SEDenic4mmWE9sTknbMKW6SH8OL8cnxTXF6k12fF8PR8dDMaFtkoT3-eXn1t4n1vT3r9xOLHJie-13uV-s91OuSD-d-Xpb8lD0Hxy8x3p1-sFVbHS7zuVAncych3_cBKFZRow9qXmFg2m9tnLfj5PSD0XneANyXkofdcQv73zhp98AwySp7d_1ufNT2eyyh5uAO4ObVqpySC1GyD5Yq0rxhpH-wN2uwifETa1n7H7w5u04nPcuJ3OzKbn26IHp7mgt3JMEvv7uEw4KUnZR-XCU7ICev7EY5xiHzsncz7UYwmUz-gceiXMZ0Q3yuDhEXTmAYJCRE-4X3kocDzsY8QQr7nxhSFpMShTyc4ipIY9DxWE1651ilcqWYnXOsF6_sowF5yUpEJq_T6kLjqt64zWcw06HkV10Zv3zPcVOzBofGXjoqfLFTVnxvTaIAtpgDlM27mi4lLZb3yz6du2uplMVuptuyj_wYAAP__oHk6wA">