[wip] Update Mac Catalyst support for Clang 13#96392
[wip] Update Mac Catalyst support for Clang 13#96392imWildCat wants to merge 1 commit intorust-lang:masterfrom
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Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @davidtwco (or someone else) soon. Please see the contribution instructions for more information. |
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| pub fn macabi_llvm_target(arch: &str) -> String { | ||
| let (major, minor) = ios_deployment_target(); | ||
| format!("{}-apple-ios{}.{}.0-macabi", arch, major, minor) |
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Not sure whether this is suitable for the catalyst use case...
Please feel free to give hints.
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My change needs to be tested using the nightly channel because it is related to Mac Catalyst. |
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New question: Should I use stage 2 or stage 3 to test my change locally? I cannot build stage 3 locally. When I use stage 2 to test my change: It does not change anything: |
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I have no experience with Apple platforms so I'll reassign this. r? rust-lang/compiler |
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r? rust-lang/compiler |
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@rust-lang/compiler who's the resident mac expert? |
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Hi @terhechte! I followed the README of https://github.com/terhechte/rust-catalyst-example with this project (https://github.com/BLAKE3-team/BLAKE3.git) but it didn't work: (Toggle to see the output)``` ➜ BLAKE3 git:(master) ✗ cargo +stage2 build -Z build-std --target x86_64-apple-ios-macabi Compiling rustc-std-workspace-core v1.99.0 (/Volumes/SharedVol/rust-projects/rust/build/aarch64-apple-darwin/stage2/lib/rustlib/src/rust/library/rustc-std-workspace-core) Compiling blake3 v1.3.1 (/Volumes/SharedVol/rust-projects/BLAKE3) Compiling compiler_builtins v0.1.71 Compiling libc v0.2.121 The following warnings were emitted during compilation:warning: The C compiler "clang" does not support -mavx512f and -mavx512vl. error: failed to run custom build command for Caused by: --- stderr error occurred: Command "clang" "-O0" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=x86_64-apple-ios13.0-macabi" "-isysroot" "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.3.sdk" "-fembed-bitcode" "-Wall" "-Wextra" "-std=c11" "-o" "/Volumes/SharedVol/rust-projects/BLAKE3/target/x86_64-apple-ios-macabi/debug/build/blake3-5c91a7166ed285cc/out/c/blake3_sse2_x86-64_unix.o" "-c" "c/blake3_sse2_x86-64_unix.S" with args "clang" did not execute successfully (status code exit status: 1). warning: build failed, waiting for other jobs to finish... |
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| pub fn macabi_llvm_target(arch: &str) -> String { | ||
| let (major, minor) = ios_deployment_target(); |
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I'm not sure whether it is a good way. But as an iOS developer, I believe it looks good. Because in Xcode, Mac Catalyst minimal version is highly related to minimal iOS version. For example, if I choose iOS 14.0, I can only pick macOS 11+ for this situation:
(Copied from https://github.com/alexcrichton/cc-rs/pull/678)
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This looks like a good solution!
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@imWildCat Sorry for the delay! It has been some time since I last looked into this topic. I just checked my notes and can only offer some guesses:
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Thanks @terhechte! I tried Rust libs without C and found that: without the change of this PR, everything is fine with Xcode 13.3 or 13.4.
Good point! For clang, I think we can drop ➜ temp cat i.c
int main() {
return 0;
}
➜ temp clang -target x86_64-apple-ios-macabi i.c
➜ temp echo $?
0 |
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r? rust-lang/compiler |
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I'm raising this to discuss this PR next thursday meeting so we can assign someone with expertise with this platform |
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good idea, because highfive bot chose me, but I am also not an expert :^) |
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@rustbot ping macos |
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Error: This team ( Please let |
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That should be fixed (since macos is basically for this purpose) but I don't have time to do it. Also, even though I'm in the ping group, I've never used catalyst. So I'll just CC @hkratz, @inflation, @shepmaster, @nvzqz manually. Thanks. |
…k-Simulacrum Update `triagebot.toml` for macos ping group idk what i'm doing but i saw rust-lang#96392 (comment) cc: `@thomcc`
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☔ The latest upstream changes (presumably #98075) made this pull request unmergeable. Please resolve the merge conflicts. |
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@hkratz or @shepmaster, would either of you have time look at this and give us a 👍/👎 if this looks ok to you? Thanks! 🙂 |
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@wesleywiser Actually, I'm not confident about this change as pure Rust libs can compile targeting Catalyst using Clang 13+ without this PR. |
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I'll remove the @rustbot label -I-compiler-nominated |
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I am unsure about that status of this PR. IIUC by reading the last comment, I infer its status to be "iffy" i.e. not really necessary, am I reading it correctly? @rustbot author |
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I'm having trouble building for Mac Catalyst - and my research has taken me back to this issue. It looks like the minimum version did get moved to 13.1. @imWildCat - Not sure why you're able to build with your configuration, but on Xcode 13.4 I am seeing: When attempting to build the std lib. |
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Another odd thing is that error is from the aarch64 version of Catalyst, but from what I can see in the source, that aarch64 version specifically should be set to 14.0, not 13.0. So something is weird here: |
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It looks like my issue is cured by rust-lang/cc-rs#678. The CC tooling is overriding even any change here. |
Yeah. If it is a pure Rust project, we're good without needing to change the |
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ping from triage - can you post your status on this PR? Thanks FYI: when a PR is ready for review, send a message containing |
imWildCat
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Any update on this issue or a workaround how to get past this problem? We're stuck making builds for |
…ed-ios-macbi-target-version, r=wesleywiser
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 rust-lang#96392, inspired by rust-lang/cc-rs#727
…-ios-macbi-target-version, r=wesleywiser
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 rust-lang#96392, inspired by rust-lang/cc-rs#727
15 participants
LLVM 13 (bundled in Xcode 13.3+) bumped the minimal x86_64 Catalyst version.
In this case, we'd better provide a way to change the minimal version number.
This would also work:
Similar PR: conan-io/conan#10880