ENH: distutils: add support for ILP64 OpenBLAS (generic symbol suffix)

Generalize the ILP64 BLAS/LAPACK symbol name handling to deal with
arbitrary prefix/suffix.

The build-time behavior is changed so that HAVE_BLAS_ILP64 and
BLAS_SYMBOL_SUFFIX/PREFIX defines are added to compile options
as appropriate.

Mainly to make autodetection of BLAS/LAPACK easier for downstream
numpy.distutils users, add get_info aliases 'blas_ilp64_opt',
'blas_ilp64_plain_opt', and 'blas64__opt' for any/no/""&"64_"
prefix&suffix, and the same for lapack. (Due to the way system_info
works, each also gets a separate class.)

In addition to openblas64_ which has a fixed suffix, add the (by default
suffixless) openblas_ilp64, which correspond to the most likely cases to
be present.

1 files changed, 2 insertions, 4 deletions

diff --git a/numpy/linalg/setup.py b/numpy/linalg/setup.py
index f5cb04e89..6315a34b4 100644
--- a/numpy/linalg/setup.py
+++ b/numpy/linalg/setup.py
@@ -26,10 +26,8 @@ def configuration(parent_package='', top_path=None):
     ]
     all_sources = config.paths(lapack_lite_src)
 
-    if (os.environ.get('NPY_USE_BLAS64_', "0") != "0"):
-        lapack_info = get_info('lapack64__opt', 2)
-        lapack_info.setdefault('define_macros', [])
-        lapack_info['define_macros'] += [('NPY_UMATH_USE_BLAS64_', None)]
+    if os.environ.get('NPY_USE_BLAS_ILP64', "0") != "0":
+        lapack_info = get_info('lapack_ilp64_opt', 2)
     else:
         lapack_info = get_info('lapack_opt', 0)  # and {}