Install OpenMP on MacOS

install-openmp-macos.sh

#!/bin/bash

# Install
brew install llvm
brew install libomp

# Compile
# clang++ test.cpp -o test -Xpreprocessor -fopenmp -lomp

omp.h file not found while using open mp

@rinibhasin have you successfully installed openmp in MacOS?

You have to add Homebrew's include and lib directories to Clang's header and library search paths:

-L/opt/homebrew/opt/libomp/lib -I/opt/homebrew/opt/libomp/include

(base) antongryban@Antons-MacBook-Air ~ % brew install llvm
brew install libomp
zsh: command not found: brew
zsh: command not found: brew

This is how it worked for me:

install https://brew.sh/

Install required packages
brew install llvm libomp

in command line set variables that will be used for compilation (can be done by editing .zprofile):

export PATH="/opt/homebrew/opt/llvm/bin:$PATH"
export LDFLAGS="-L/opt/homebrew/opt/llvm/lib"
export CPPFLAGS="-I/opt/homebrew/opt/llvm/include"

compile program
clang++ -fopenmp --std=c++11 -stdlib=libc++ lab04.cpp -o lab04 && ./lab04

@antongryban install https://brew.sh

This is how it worked for me:

install https://brew.sh/

Install required packages brew install llvm libomp

in command line set variables that will be used for compilation (can be done by editing .zprofile):

export PATH="/opt/homebrew/opt/llvm/bin:$PATH"
export LDFLAGS="-L/opt/homebrew/opt/llvm/lib"
export CPPFLAGS="-I/opt/homebrew/opt/llvm/include"

compile program clang++ -fopenmp --std=c++11 -stdlib=libc++ lab04.cpp -o lab04 && ./lab04

worked perfectly for me.
clang++ -fopenmp proj.cpp -o proj