ENH: Add configure option for blas/lapack libraries

Author: Smit-create

meson.build

@@ -16,6 +16,8 @@ project(
     'c_args=-Wno-unused-function -Wno-conversion -Wno-misleading-indentation -Wno-incompatible-pointer-types',
     'fortran_args=-Wno-conversion',
     'fortran_std=legacy',
+    'blas=openblas',
+    'lapack=openblas'
   ],
 )
 

meson_options.txt

@@ -0,0 +1,4 @@
+option('blas', type: 'string', value: 'openblas',
+        description: 'option for BLAS library switching')
+option('lapack', type: 'string', value: 'openblas',
+        description: 'option for LAPACK library switching')

scipy/meson.build

@@ -108,12 +108,17 @@ numpy_nodepr_api = '-DNPY_NO_DEPRECATED_API=NPY_1_9_API_VERSION'
 
 
 # TODO: 64-bit BLAS and LAPACK
-blas = dependency('openblas')
-lapack = dependency('openblas')
-
-# TODO: deal with case where we do need the g77 ABI wrappers (see
-#       _build_utils/_fortran.py)
-g77_abi_wrappers = files('_build_utils' / 'src' / 'wrap_dummy_g77_abi.f')
+blas = dependency(get_option('blas'))
+lapack = dependency(get_option('lapack'))
+
+if blas.name() == 'mkl' or lapack.name() == 'mkl'
+  g77_abi_wrappers = files([
+    '_build_utils/src/wrap_g77_abi_f.f',
+    '_build_utils/src/wrap_g77_abi_c.c'
+    ])
+else
+  g77_abi_wrappers = files('_build_utils/src/wrap_dummy_g77_abi.f')
+endif
 
 generate_config = custom_target(
   'generate-config',