Using OpenMP with clang

by

Some additional comments:

1) You need to use -fopenmp=libomp to enable OpenMP in clang. -fopenmp just links libgomp but ignores all the pragmas. Weird, I know — and will be changed in the trunk soon.

2) 3.7 is the first version that supports OpenMP. 3.6 doesn’t.

3) clang is only able to work with libomp. Don’t put libgomp (headers or the library) in the way of libomp! clang uses Intel API, not supported by libgomp. -fopenmp=libomp should link correct library.

More Related Contents:

  1. Error enabling openmp – “ld: library not found for -lgomp” and Clang errors
  2. How to remove “noise” from GCC/clang assembly output?
  3. static variable link error [duplicate]
  4. Why is this program erroneously rejected by three C++ compilers?
  5. Is the compiler allowed to optimize out heap memory allocations?
  6. Catalina C++: Using headers yield error: no member named ‘signbit’ in the global namespace
  7. How does the omp ordered clause work?
  8. What’s the difference between “static” and “dynamic” schedule in OpenMP?
  9. Measure execution time in C++ OpenMP code
  10. How to compile/link Boost with clang++/libc++?
  11. Measuring memory bandwidth from the dot product of two arrays
  12. How to include omp.h in OS X?
  13. Standard-layout and tail padding
  14. Unoptimized clang++ code generates unneeded “movl $0, -4(%rbp)” in a trivial main()
  15. Overloaded lambdas in C++ and differences between clang and gcc
  16. Linking problems due to symbols with abi::cxx11?
  17. How do I tell CMake to use Clang on Windows?
  18. C++11 Thread safety of Random number generators
  19. Clang doesn’t see basic headers
  20. linking with clang++ on OS X generates lots of symbol not found errors
  21. How to use lock in OpenMP?
  22. C++: Timing in Linux (using clock()) is out of sync (due to OpenMP?)
  23. Is make_shared really more efficient than new?
  24. Get member of __m128 by index?
  25. Conflict between copy constructor and forwarding constructor
  26. gcc can compile a variadic template while clang cannot
  27. Using libstdc++ compiled libraries with clang++ -stdlib=libc++
  28. How to use CMAKE_EXPORT_COMPILE_COMMANDS?
  29. C++ linking error after upgrading to Mac OS X 10.9 / Xcode 5.0.1
  30. llvm ir back to human-readable source language?

Leave a Comment