A method to build Intel OpenMP Runtime on Mavericks

Preparation

Please install "Command Line Tools for OSX 10.9" from Apple Developer Site before.

How to make

$ make

Output files

include directory is located on

include/

created library is located on

lib/

Output Binary Spec

$ file lib/libiomp5.dylib 
lib/libiomp5.dylib: Mach-O universal binary with 2 architectures
lib/libiomp5.dylib (for architecture i386):	Mach-O dynamically linked shared library i386
lib/libiomp5.dylib (for architecture x86_64):	   Mach-O 64-bit dynamically linked shared library x86_64

Remaining tasks

build and install OpenMP(R)/Clang

http://clang-omp.github.io

test

create a C file

include <omp.h>
#include <stdio.h>
int main() {
#pragma omp parallel
printf("Hello from thread %d, nthreads %d\n", omp_get_thread_num(), omp_get_num_threads());
}

compile with libs

$ /usr/local/bin/clang -fopenmp test.c -o hello -I/<cloned_dir>/openmp_script/include -L/<cloned_dir>/openmp_script/lib

*** execute

$ OMP_NUM_THREADS=5 ./hello 
Hello from thread 2, nthreads 5
Hello from thread 3, nthreads 5
Hello from thread 0, nthreads 5
Hello from thread 4, nthreads 5
Hello from thread 1, nthreads 5
$ OMP_NUM_THREADS=3 ./hello 
Hello from thread 0, nthreads 3
Hello from thread 1, nthreads 3
Hello from thread 2, nthreads 3
$ OMP_NUM_THREADS=2 ./hello 
Hello from thread 0, nthreads 2
Hello from thread 1, nthreads 2