Can't get clang running

[Trung0246]

Additional Info

• I am using Windows Subsystem for Linux

Output of brew config

HOMEBREW_VERSION: 4.4.20
ORIGIN: https://github.com/Homebrew/brew
HEAD: 47ef1a3b0b742a78be35c016df6a0279d6035ebb
Last commit: 9 days ago
Branch: stable
Core tap JSON: 09 Feb 07:59 UTC
HOMEBREW_PREFIX: /home/linuxbrew/.linuxbrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_MAKE_JOBS: 8
Homebrew Ruby: 3.3.7 => /mnt/main/trung/Binary/Program/Linux/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/vendor/portable-ruby/3.3.7/bin/ruby
CPU: octa-core 64-bit unknown_0x6_0x5f
Clang: 19.1.7
Git: 2.48.1 => /home/linuxbrew/.linuxbrew/bin/git
Curl: 7.88.1 => /bin/curl
Kernel: Linux 6.6.32-production+truenas x86_64 GNU/Linux
OS: Debian GNU/Linux 12 (bookworm) (bookworm)
Host glibc: 2.36
/usr/bin/gcc: N/A
/usr/bin/ruby: N/A
glibc: 2.35_1
gcc@11: N/A
gcc: 14.2.0_1
xorg: N/A

Output of brew doctor

Please note that these warnings are just used to help the Homebrew maintainers
with debugging if you file an issue. If everything you use Homebrew for is
working fine: please don't worry or file an issue; just ignore this. Thanks!

Warning: The directory /tmp does not permit executing
programs. It is likely mounted as "noexec". Please set HOMEBREW_TEMP
in your ~/.zshrc to a different directory, for example:
  export HOMEBREW_TEMP=~/tmp
  echo 'export HOMEBREW_TEMP=~/tmp' >> ~/.zshrc

Description of issue

Hi, I have tried various env var changes and flag but still can't get clang to compile. Current bash file so far:

#!/usr/bin/bash

export LIBRARY_PATH="/home/linuxbrew/.linuxbrew/opt/llvm/lib:/home/linuxbrew/.linuxbrew/opt/glibc/lib:/home/linuxbrew/.linuxbrew/Cellar/glibc/2.35_1/lib"
export LD_LIBRARY_PATH="/home/linuxbrew/.linuxbrew/opt/llvm/lib:/home/linuxbrew/.linuxbrew/opt/glibc/lib:/home/linuxbrew/.linuxbrew/Cellar/glibc/2.35_1/lib"
export C_INCLUDE_PATH="/home/linuxbrew/.linuxbrew/opt/llvm/include:/home/linuxbrew/.linuxbrew/opt/llvm/include/c++/v1:/home/linuxbrew/.linuxbrew/opt/glibc/include"
export CPLUS_INCLUDE_PATH="/home/linuxbrew/.linuxbrew/opt/llvm/include:/home/linuxbrew/.linuxbrew/opt/llvm/include/c++/v1:/home/linuxbrew/.linuxbrew/opt/glibc/include"

export PATH="/home/linuxbrew/.linuxbrew/opt/llvm/bin:$PATH"

clang-19 -std=gnu2x -g ./main.c -o main

Output:

clang-19: error: unable to execute command: Segmentation fault (core dumped)
clang-19: error: linker command failed due to signal (use -v to see invocation)

If I tried to run clang with no env var set like clang-19 -std=gnu2x -g ./main.c -o main then I got this:

/mnt/main/trung/Binary/Program/Linux/linuxbrew/.linuxbrew/Cellar/llvm/19.1.7/lib/clang/19/include/inttypes.h:24:15: fatal error:
 'inttypes.h' file not found
   24 | #include_next <inttypes.h>
      |               ^~~~~~~~~~~~
1 error generated.
./main.c:6:10: fatal error: 'stdlib.h' file not found
    6 | #include "stdlib.h"
      |          ^~~~~~~~~~
1 error generated

clang -v --print-search-dirs output with no manual env var:

Homebrew clang version 19.1.7
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /mnt/main/trung/Binary/Program/Linux/linuxbrew/.linuxbrew/Cellar/llvm/19.1.7/bin
System configuration file directory: /mnt/main/trung/Binary/Program/Linux/linuxbrew/.linuxbrew/etc/clang
User configuration file directory: /mnt/main/trung/.config/clang
programs: =/mnt/main/trung/Binary/Program/Linux/linuxbrew/.linuxbrew/Cellar/llvm/19.1.7/bin
libraries: =/mnt/main/trung/Binary/Program/Linux/linuxbrew/.linuxbrew/Cellar/llvm/19.1.7/lib/clang/19:/mnt/main/trung/Binary/Program/Linux/linuxbrew/.linuxbrew/Cellar/llvm/19.1.7/bin/../lib/x86_64-unknown-linux-gnu:/mnt/main/trung/Binary/Program/Linux/linuxbrew/.linuxbrew/Cellar/llvm/19.1.7/lib/clang/19/lib/x86_64-unknown-linux-gnu:/lib/x86_64-linux-gnu:/lib/../lib64:/usr/lib/x86_64-linux-gnu:/usr/lib/../lib64:/lib:/usr/lib

brew info gcc:

==> gcc: stable 14.2.0 (bottled), HEAD
GNU compiler collection
https://gcc.gnu.org/
Installed
/home/linuxbrew/.linuxbrew/Cellar/gcc/14.2.0_1 (2,105 files, 564.0MB) *
  Poured from bottle using the formulae.brew.sh API on 2025-02-08 at 16:33:15
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/g/gcc.rb
License: GPL-3.0-or-later WITH GCC-exception-3.1
==> Dependencies
Build: flex ✘, m4 ✘
Required: gmp ✔, isl ✔, libmpc ✔, mpfr ✔, zstd ✔, binutils ✔, zlib ✔
==> Options
--HEAD
        Install HEAD version
==> Analytics
install: 98,035 (30 days), 297,721 (90 days), 1,574,527 (365 days)
install-on-request: 49,655 (30 days), 154,081 (90 days), 705,537 (365 days)
build-error: 1,108 (30 days)

brew info llvm:

==> llvm: stable 19.1.7 (bottled), HEAD
Next-gen compiler infrastructure
https://llvm.org/
Installed
/home/linuxbrew/.linuxbrew/Cellar/llvm/19.1.7 (8,108 files, 2.7GB) *
  Poured from bottle using the formulae.brew.sh API on 2025-02-11 at 22:17:11
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/l/llvm.rb
License: Apache-2.0 WITH LLVM-exception
==> Dependencies
Build: cmake ✘, ninja ✘, swig ✘, pkgconf ✔
Required: python@3.13 ✔, xz ✔, z3 ✔, zstd ✔, binutils ✔, elfutils ✔, libedit ✔, libffi ✔, ncurses ✔, zlib ✔, gcc ✔
==> Options
--HEAD
        Install HEAD version
==> Caveats
CLANG_CONFIG_FILE_SYSTEM_DIR: /home/linuxbrew/.linuxbrew/etc/clang
CLANG_CONFIG_FILE_USER_DIR:   ~/.config/clang

LLD is now provided in a separate formula:
  brew install lld

We plan to build LLVM 20 with `LLVM_ENABLE_EH=OFF`. Please see:
  https://github.com/orgs/Homebrew/discussions/5654

Emacs Lisp files have been installed to:
  /home/linuxbrew/.linuxbrew/share/emacs/site-lisp/llvm
==> Analytics
install: 69,740 (30 days), 219,885 (90 days), 760,624 (365 days)
install-on-request: 33,726 (30 days), 106,652 (90 days), 381,645 (365 days)
build-error: 467 (30 days)

Weirdly gcc still works as I ran gcc-14 -std=gnu2x -g ./main.c -lm -o main and it compiles successfully.

zig cc also works with the same set of flag above.

/home/linuxbrew is a symlink to the actual /mnt/main/trung/Binary/Program/Linux/linuxbrew.

Did I miss something?