Add AVX2 cpuinfo check to setup.py

Author: lgarrison

setup.py

@@ -88,7 +88,7 @@ def cmake_bool(cond):
         cmake_args = [
           '-DBLOSC_DIR:PATH=%s' % os.environ.get('BLOSC_DIR', ''),
           '-DDEACTIVATE_SSE2:BOOL=%s' % cmake_bool(('DISABLE_BLOSC_SSE2' in os.environ) or (cpu_info is None) or ('sse2' not in cpu_info['flags'])),
-          '-DDEACTIVATE_AVX2:BOOL=%s' % cmake_bool('DISABLE_BLOSC_AVX2' in os.environ),
+          '-DDEACTIVATE_AVX2:BOOL=%s' % cmake_bool(('DISABLE_BLOSC_AVX2' in os.environ) or (cpu_info is None) or ('avx2' not in cpu_info['flags'])),
           '-DDEACTIVATE_LZ4:BOOL=%s' % cmake_bool(not int(os.environ.get('INCLUDE_LZ4', '1'))),
           # Snappy is disabled by default
           '-DDEACTIVATE_SNAPPY:BOOL=%s' % cmake_bool(not int(os.environ.get('INCLUDE_SNAPPY', '0'))),