Download, compile LLVM and OpenMP Runtime for Mac

mac-clang-omp-setup.sh

INTEL_OPENMP_LATEST_BUILD_LINK=https://www.openmprtl.org/sites/default/files/libomp_20131209_oss.tgz
CLANG_INCLUDE=~/code/llvm/include
CLANG_BIN=~/code/llvm/build/Debug+Asserts/bin
CLANG_LIB=~/code/llvm/build/Debug+Asserts/lib
OPENMP_INCLUDE=~/code/libomp_oss/exports/common/include
OPENMP_LIB=~/code/libomp_oss/exports/mac_32e/lib.thin

cd ~/
mkdir code
cd ~/code
git clone https://github.com/clang-omp/llvm
git clone https://github.com/clang-omp/compiler-rt llvm/projects/compiler-rt
git clone -b clang-omp https://github.com/clang-omp/clang llvm/tools/clang
cd llvm
mkdir build
cd build
../configure
make
cd Debug+Asserts/bin
mv clang clang2
rm -rf clang++
ln -s clang2 clang2++
echo "LLVM+Clang+OpenMP Include Path : " ${CLANG_INCLUDE}
echo "LLVM+Clang+OpenMP Bin Path     : " ${CLANG_BIN}
echo "LLVM+Clang+OpenMP Lib Path     : " ${CLANG_LIB}

cd ~/code
curl ${INTEL_OPENMP_LATEST_BUILD_LINK} -o libomp_oss_temp.tgz
gunzip -c libomp_oss_temp.tgz | tar xopf -
rm -rf libomp_oss_temp.tgz
cd libomp_oss
echo "If you do not have GCC installed (not normal on vanilla Mavericks), you must comment out lines 450-451 in libomp_oss/tools/check-tools.pl.  Have you done this or want to compile anyway?"
select yn in "Yes" "No"; do
    case $yn in
        Yes ) make compiler=clang; break;;
        No ) exit;;
    esac
done

echo "OpenMP Runtime Include Path : " ${OPENMP_INCLUDE}
echo "OpenMP Runtime Lib Path     : " ${OPENMP_LIB}

(echo 'export PATH='${CLANG_BIN}':$PATH';
    echo 'export C_INCLUDE_PATH='${CLANG_INCLUDE}':'${OPENMP_INCLUDE}':$C_INCLUDE_PATH'; 
    echo 'export CPLUS_INCLUDE_PATH='${CLANG_INCLUDE}':'${OPENMP_INCLUDE}':$CPLUS_INCLUDE_PATH';
    echo 'export LIBRARY_PATH='${CLANG_LIB}':'${OPENMP_LIB}':$LIBRARY_PATH';
    echo 'export DYLD_LIBRARY_PATH='${CLANG_LIB}':'${OPENMP_LIB}':$DYLD_LIBRARY_PATH}') >> ~/.profile

echo "LLVM+Clang+OpenMP is now accessible through [ clang2 ] via terminal and does not conflict with Apple's clang"

I needed to add
export LIBOMP_WORK=~/code/libomp_oss
to avoid error:
No rule to make target `../../src/makefile.mk'. Stop
while running "make compiler=clang".

Also needed to comment out line 433 of src/makefile.mk to remove -no-intel-extensions as noted on stackoverflow

I have this error when compiling the test program
/tmp/test.cpp:1:10: fatal error: 'cmath' file not found

include

     ^

#include <cmath>
  int main()
  {
    const int size = 256;
    double sinTable[size];

    #pragma omp parallel for
    for(int n=0; n<size; ++n)
      sinTable[n] = std::sin(2 * M_PI * n / size);

    // the table is now initialized
  }

I think the line number changed. As of today, I believe the line in makefile.mk that needs to be commented out is 447:

ifeq "$(ld)" "icc"
    #ld-flags += -no-intel-extensions
endif

Correct me if I'm wrong! (Too late for me but for others maybe.)