brew install clang-omp not working

问题:

I need to compile a C++ code with OpenMP on my Mac. Unfortunately the default version of clang installed on the Mac (703.0.31) does not support OpenMP. Therefore, I am trying to install the clang-omp package with brew (e.g., following this guide). The issue is that brew cannot find neither the libiomp, nor the clang-omp package:

$ brew install clang-omp Error: No available formula with the name "clang-omp" ==> Searching for similarly named formulae... Error: No similarly named formulae found. ==> Searching taps... Error: No formulae found in taps. 

I am wondering whether clang-omp is still provided by brew. Or am I doing something wrong? Any ideas?

Edit: If I do brew search I get the following:

$ brew search clang clang-format           emacs-clang-complete-async Caskroom/cask/openclonk-c54d917-darwin-amd64-clang 

Thus, no evidence of clang-omp. Is it possible I have to change repository or something like this?

回答1:

You can install llvm using brew since it now includes openmp.

brew install llvm 

You can make a symlink if you want

ln -s /usr/local/opt/llvm/bin/clang /usr/local/bin/clang-omp 

My makefile looks like this

CPP = /usr/local/opt/llvm/bin/clang CPPFLAGS = -I/usr/local/opt/llvm/include -fopenmp LDFLAGS = -L/usr/local/opt/llvm/lib  example: example.c     $(CPP) $(CPPFLAGS) $^ -o $@ $(LDFLAGS) 

回答2:

Install a deleted formula

brew install homebrew/boneyard/clamp-omp 

OR

brew tap homebrew/boneyard brew install clang-omp 

Reference: https://superuser.com/questions/1110414/install-a-deleted-homebrew-formulae/1110934#1110934

Then you need to set the environment:

export C_INCLUDE_PATH=/usr/local/Cellar/libiomp/20150401/include/libiomp:$C_INCLUDE_PATH  export CPLUS_INCLUDE_PATH=/usr/local/Cellar/libiomp/!date!/include/libiomp:$CPLUS_INCLUDE_PATH  export LIBRARY_PATH=/usr/local/Cellar/libiomp/!date!/lib:$LIBRARY_PATH 

回答3:

clang-omp has been boneyarded. See this commit: https://github.com/Homebrew/homebrew-core/commit/c57e30773:

clang-omp: migrate to boneyard

Functionality is now available as part of LLVM in Homebrew. So just install llvm

文章来源: brew install clang-omp not working