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821b2a8e39
Remove hardcoded iOS version of clang target for Mac Catalyst
## Background
From `clang` 13.x, `-target x86_64-apple-ios13.0-macabi` fails while linking:
```
= note: clang: error: invalid version number in '-target x86_64-apple-ios13.0-macabi'
```
<details>
<summary>Verbose output</summary>
```
error: linking with `cc` failed: exit status: 1
|
= note: LC_ALL="C" PATH="[removed]" VSLANG="1033" ZERO_AR_DATE="1" "cc" "-Wl,-exported_symbols_list,/var/folders/p8/qpmzbsdn07g5gxykwfxxw7y40000gn/T/rustci8tkvp/list" "-target" "x86_64-apple-ios13.0-macabi" "/var/folders/p8/qpmzbsdn07g5gxykwfxxw7y40000gn/T/rustci8tkvp/symbols.o" "/path/to/my/[project]/[user]/target/x86_64-apple-ios-macabi/release/deps/[user].[user].a2ccc648-cgu.0.rcgu.o" "-L" "/path/to/my/[project]/[user]/target/x86_64-apple-ios-macabi/release/deps" "-L" "/path/to/my/[project]/[user]/target/release/deps" "-L" "/path/to/my/[project]/[user]/target/x86_64-apple-ios-macabi/release/build/blake3-74e6ba91506ce712/out" "-L" "/path/to/my/[project]/[user]/target/x86_64-apple-ios-macabi/release/build/blake3-74e6ba91506ce712/out" "-L" "/Users/[user]/.rustup/toolchains/nightly-aarch64-apple-darwin/lib/rustlib/x86_64-apple-ios-macabi/lib" "/var/folders/p8/qpmzbsdn07g5gxykwfxxw7y40000gn/T/rustci8tkvp/libblake3-343c1616c8f62c66.rlib" "/path/to/my/[project]/[user]/target/x86_64-apple-ios-macabi/release/deps/libcompiler_builtins-15d4f20b641cf9ef.rlib" "-framework" "Security" "-framework" "CoreFoundation" "-framework" "Security" "-liconv" "-lSystem" "-lobjc" "-framework" "Security" "-framework" "Foundation" "-lc" "-lm" "-isysroot" "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.1.sdk" "-Wl,-syslibroot" "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.1.sdk" "-L" "/Users/[user]/.rustup/toolchains/nightly-aarch64-apple-darwin/lib/rustlib/x86_64-apple-ios-macabi/lib" "-o" "/path/to/my/[project]/[user]/target/x86_64-apple-ios-macabi/release/deps/lib[user].dylib" "-Wl,-dead_strip" "-dynamiclib" "-Wl,-dylib" "-nodefaultlibs"
= note: clang: error: invalid version number in '-target x86_64-apple-ios13.0-macabi'
warning: `[user]` (lib) generated 6 warnings
error: could not compile `[user]` due to previous error; 6 warnings emitted
```
</details>
### Minimal example
C code:
```c
#include <stdio.h>
void main() {
int a = 1;
int b = 2;
int c = a + b;
printf("%d", c);
}
```
`clang` command sample:
```
➜ 202301 clang -target x86_64-apple-ios13.0-macabi main.c
clang: error: invalid version number in '-target x86_64-apple-ios13.0-macabi'
➜ 202301 clang -target x86_64-apple-ios14.0-macabi main.c
main.c:2:1: warning: return type of 'main' is not 'int' [-Wmain-return-type]
void main() {
^
main.c:2:1: note: change return type to 'int'
void main() {
^~~~
int
1 warning generated.
➜ 202301 clang -target x86_64-apple-ios15.0-macabi main.c
main.c:2:1: warning: return type of 'main' is not 'int' [-Wmain-return-type]
void main() {
^
main.c:2:1: note: change return type to 'int'
void main() {
^~~~
int
1 warning generated.
➜ 202301 clang -target x86_64-apple-ios-macabi main.c
main.c:2:1: warning: return type of 'main' is not 'int' [-Wmain-return-type]
void main() {
^
main.c:2:1: note: change return type to 'int'
void main() {
^~~~
int
1 warning generated.
➜ 202301 clang --version
Apple clang version 14.0.0 (clang-1400.0.29.202)
Target: arm64-apple-darwin22.2.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
```
This PR is a simplified version of #96392, inspired by https://github.com/rust-lang/cc-rs/pull/727
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| rustc | ||
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| rustc_codegen_gcc | ||
| rustc_codegen_llvm | ||
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| rustc_const_eval | ||
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| rustc_driver | ||
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| rustc_errors | ||
| rustc_expand | ||
| rustc_feature | ||
| rustc_fs_util | ||
| rustc_graphviz | ||
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| rustc_mir_build | ||
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| rustc_monomorphize | ||
| rustc_parse | ||
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| rustc_passes | ||
| rustc_plugin_impl | ||
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| rustc_resolve | ||
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| rustc_serialize | ||
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