arm-linux-musleabi mpcorenovfp target won't compile/bootstrap with zig 0.9.0

[lancethepants]

Since zig 0.7.x I've been able to compile/bootstrap for "-target arm-linux-musleabi -mcpu=mpcorenovfp" (armv7 Cortex-A9 no fpu).
I seem to be getting an error while compilling musl. I've attached the files from the zig diagnostic message.

sqrtf-6046a3.zip

[nektro]

please paste the stack trace text here on github. use 3 ` chars to make a block like so

```
```

[lancethepants]

$ zig cc -target arm-linux-musleabi -mcpu=mpcorenovfp hello.c -o hello
zig: error: clang frontend command failed with exit code 139 (use -v to see invocation)
clang version 13.0.1 (git@github.com:ziglang/zig-bootstrap.git 81f0e6c5b902ead84753490db4f0007d08df964a)
Target: arm-unknown-linux-musleabi
Thread model: posix
InstalledDir: /home/lance
zig: note: diagnostic msg:
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
zig: note: diagnostic msg: /tmp/sqrtf-acce59.c
zig: note: diagnostic msg: /tmp/sqrtf-acce59.sh
zig: note: diagnostic msg:

********************

Here's the output I get, probably not what you're asking for, but easily reproducible with
zig cc -target arm-linux-musleabi -mcpu=mpcorenovfp hello.c -o hello

[lancethepants]

The same issues can also be observed with -mcpu=generic+v6kz which is an example in the README.

[andrewrk]

This is a crash in clang 13. Next step to solving this issue is to repro the issue with clang master branch, then file an upstream LLVM bug.

[vesim987]

I think this issue is related to: #10961

[lancethepants]

Yes, I believe it is the same problem. Pulling from that issue, if I compile with
"-target arm-linux-musleabi -mcpu=mpcorenovfp+soft_float"
then I get a working binary under zig 0.9.1.

I can also bootstrap 0.9.1 using "./build -j4 arm-linux-musleabi mpcorenovfp+soft_float"

When I try to bootstrap HEAD from https://github.com/ziglang/zig-bootstrap I get the following which says libc++ does not work on multi-threaded ARM yet and mentions #6573 . HEAD seems to carry a patch mentioned in that issue, so not sure why I'm seeing this error

-- Check for working CXX compiler: /home/lance/zig-bootstrap/out/host/bin/zig
-- Check for working CXX compiler: /home/lance/zig-bootstrap/out/host/bin/zig -- broken
CMake Error at /usr/share/cmake-3.13/Modules/CMakeTestCXXCompiler.cmake:45 (message):
  The C++ compiler

    "/home/lance/zig-bootstrap/out/host/bin/zig"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /home/lance/zig-bootstrap/out/build-llvm-arm-linux-musleabi-mpcorenovfp+soft_float/CMakeFiles/CMakeTmp

    Run Build Command:"/usr/bin/make" "cmTC_ceb97/fast"
    /usr/bin/make -f CMakeFiles/cmTC_ceb97.dir/build.make CMakeFiles/cmTC_ceb97.dir/build
    make[1]: Entering directory '/home/lance/zig-bootstrap/out/build-llvm-arm-linux-musleabi-mpcorenovfp+soft_float/CMakeFiles/CMakeTmp'
    Building CXX object CMakeFiles/cmTC_ceb97.dir/testCXXCompiler.cxx.o
    /home/lance/zig-bootstrap/out/host/bin/zig  c++ -fno-sanitize=all -s -target arm-linux-musleabi -mcpu=mpcorenovfp+soft_float     -o CMakeFiles/cmTC_ceb97.dir/testCXXCompiler.cxx.o -c /home/lance/zig-bootstrap/out/build-llvm-arm-linux-musleabi-mpcorenovfp+soft_float/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
    warning(compilation): libc++ does not work on multi-threaded ARM yet.
    For more details: https://github.com/ziglang/zig/issues/6573
    error: unable to create compilation: TargetRequiresSingleThreaded
    make[1]: *** [CMakeFiles/cmTC_ceb97.dir/build.make:66: CMakeFiles/cmTC_ceb97.dir/testCXXCompiler.cxx.o] Error 1
    make[1]: Leaving directory '/home/lance/zig-bootstrap/out/build-llvm-arm-linux-musleabi-mpcorenovfp+soft_float/CMakeFiles/CMakeTmp'
    make: *** [Makefile:121: cmTC_ceb97/fast] Error 2




  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:49 (project)


-- Configuring incomplete, errors occurred!
See also "/home/lance/zig-bootstrap/out/build-llvm-arm-linux-musleabi-mpcorenovfp+soft_float/CMakeFiles/CMakeOutput.log".
See also "/home/lance/zig-bootstrap/out/build-llvm-arm-linux-musleabi-mpcorenovfp+soft_float/CMakeFiles/CMakeError.log".

[ghost]

zig.exe c++ -target arm-linux-gnueabi -O1 hello.cpp

crashes during the build of the needed libraries (running on Windows)

I.e. last output on the console is e.g.:

Compile C Objects [12/19]   

and the crash is observed (the first number varies).

Tried with
0.12.0-dev.817+54e7f58fc and
0.11.0

(Note: Without -O option there's no crash, i.e.:

zig c++ -target arm-linux-gnueabi  hello.cpp

compiles. There's also no crash when C and not C++, i.e:

zig cc -target arm-linux-gnueabi -O1 hello.c 

compiles.)

(I don't know if this observation belongs here, I hope it does)

[alexrp]

This no longer reproduces for me.

[alexrp]

❯ ./build arm-linux-musleabi mpcorenovfp
❯ qemu-arm -cpu arm11mpcore,vfp=off ./out/zig-arm-linux-musleabi-mpcorenovfp/zig version
0.14.0-dev.1622+2ac543388