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Allow setting OpenMP flags using env var #263

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thilinarmtb wants to merge 1 commit into from
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Allow setting OpenMP flags using env var #263

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12 changes: 7 additions & 5 deletions setup.py
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,11 @@
BUILD_DOCS = os.getenv('BUILD_DOCS', '0') == '1'


def get_openmp_flag():
default_flag = '-fopenmp' if sys.platform != 'win32' else '/openmp'
return os.getenv("OPENMP_FLAG", default_flag)


def get_extensions():
extensions = []

Expand All @@ -52,11 +57,8 @@ def get_extensions():
info = parallel_info()
if ('backend: OpenMP' in info and 'OpenMP not found' not in info
and sys.platform != 'darwin'):
extra_compile_args['cxx'] += ['-DAT_PARALLEL_OPENMP']
if sys.platform == 'win32':
extra_compile_args['cxx'] += ['/openmp']
else:
extra_compile_args['cxx'] += ['-fopenmp']
extra_compile_args['cxx'] += ['-DAT_PARALLEL_OPENMP',
get_openmp_flag()]
else:
print('Compiling without OpenMP...')

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