omp.h file not found, and visual studio code can't found omp.h

[marianofernandezs]

Output of brew config

#include <omp.h> ## omp.h file not found
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char* argv[]){
int nthreads = 3;
int tid;
printf("Antes del fork\n");
omp_set_num_threads(nthreads);
#pragma omp parallel private(nthreads, tid)
{
tid = omp_get_thread_num();
printf("Ejecutando thread %d - ",tid);
if (tid >= 0 && tid < (omp_get_num_threads() / 2 )){
printf("Soy productor\n");
}
else{
printf("Soy consumidor\n");
}
if(tid == 0){
printf("SOY EL PRINCIPAL: num_threads %d \n",
omp_get_num_threads());
}
}
printf("Despues del join");
}

Output of brew doctor

id: library 'omp' not found
clang: error: linker command failed with exit code 1 (use -v to see invocation)

 *  The terminal process "/bin/zsh '-l', '-c', '/usr/local/opt/llvm/bin/clang -Xpreprocessor -fopenmp -lomp /Users/mariano/Downloads/c/programa.c -o /Users/mariano/Downloads/c/programa'" terminated with exit code: 1

Description of issue

hi, I installed llvm and libomp in my MacBook Pro 16 Late 2019, I have a problem with visual studio can't run and compile my code, and the terminal return this:

id: library 'omp' not found
clang: error: linker command failed with exit code 1 (use -v to see invocation)

• The terminal process "/bin/zsh '-l', '-c', '/usr/local/opt/llvm/bin/clang -Xpreprocessor -fopenmp -lomp /Users/mariano/Downloads/c/programa.c -o /Users/mariano/Downloads/c/programa'" terminated with exit code: 1

I need help, I tried to chatgpt help but didn't get the solution he gave me. I tried to configure task.json but it didn't work.
If you land here, I would appreciate it.

[ZhongRuoyu]

What's the output of brew info llvm?

[marianofernandezs]

lvm: stable 17.0.6 (bottled), HEAD [keg-only]
Next-gen compiler infrastructure
https://llvm.org/
/usr/local/Cellar/llvm/17.0.6_1 (7,207 files, 1.8GB)
Poured from bottle using the formulae.brew.sh API on 2024-03-24 at 23:52:48
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 ✔
Required: [email protected] ✔, z3 ✔, zstd ✔
==> Options
--HEAD
Install HEAD version
==> Caveats
To use the bundled libc++ please add the following LDFLAGS:
LDFLAGS="-L/usr/local/opt/llvm/lib/c++ -Wl,-rpath,/usr/local/opt/llvm/lib/c++"

llvm is keg-only, which means it was not symlinked into /usr/local,
because macOS already provides this software and installing another version in
parallel can cause all kinds of trouble.

If you need to have llvm first in your PATH, run:
echo 'export PATH="/usr/local/opt/llvm/bin:$PATH"' >> ~/.zshrc

For compilers to find llvm you may need to set:
export LDFLAGS="-L/usr/local/opt/llvm/lib"
export CPPFLAGS="-I/usr/local/opt/llvm/include"
==> Analytics
install: 37,205 (30 days), 138,519 (90 days), 499,172 (365 days)
install-on-request: 15,214 (30 days), 60,132 (90 days), 311,780 (365 days)
build-error: 338 (30 days)

This is my output

[ZhongRuoyu]

-Xpreprocessor means its subsequent flag is passed to the preprocessor only, so the compiler driver is not passing the OpenMP-related ldflags to the linker. Removing the -Xpreprocessor flag should work.

[marianofernandezs]

Thanks, i don't work