From d3199ab2ef4357b7f54ab5e40827d8d8bd78b168 Mon Sep 17 00:00:00 2001
From: Oleksandr Pavlyk <oleksandr.pavlyk@intel.com>
Date: Mon, 1 Nov 2021 15:01:11 -0500
Subject: [PATCH 1/2] Add mkl.MKL_BLACS_LASTMPI

Used it to conditional use mkl.MKL_BLACS_MPICH2 which may not exist on Windows
---
 mkl/_mkl_service.pxd | 1 +
 mkl/_mkl_service.pyx | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/mkl/_mkl_service.pxd b/mkl/_mkl_service.pxd
index 7768f29..e11f659 100644
--- a/mkl/_mkl_service.pxd
+++ b/mkl/_mkl_service.pxd
@@ -91,6 +91,7 @@ cdef extern from "mkl.h":
     int MKL_BLACS_MSMPI
     int MKL_BLACS_INTELMPI
     int MKL_BLACS_MPICH2
+    int MKL_BLACS_LASTMPI
 
     # VML Constants
     int VML_HA
diff --git a/mkl/_mkl_service.pyx b/mkl/_mkl_service.pyx
index 8246f00..7a0b450 100644
--- a/mkl/_mkl_service.pyx
+++ b/mkl/_mkl_service.pyx
@@ -874,7 +874,6 @@ cdef __set_mpi(vendor, custom_library_name=None):
             'custom': mkl.MKL_BLACS_CUSTOM,
             'msmpi': mkl.MKL_BLACS_MSMPI,
             'intelmpi': mkl.MKL_BLACS_INTELMPI,
-            'mpich2': mkl.MKL_BLACS_MPICH2,
         },
         'output': {
             0: 'success',
@@ -883,6 +882,8 @@ cdef __set_mpi(vendor, custom_library_name=None):
             -3: 'MPI library cannot be set at this point',
         },
     }
+    if mkl.MKL_BLACS_LASTMPI > mkl.MKL_BLACS_INTELMPI + 1:
+        __variables['input']['mpich2'] = mkl.MKL_BLACS_MPICH2
     if ((vendor is 'custom' or custom_library_name is not None) and
         (vendor is not 'custom' or custom_library_name is None)):
         raise ValueError("Selecting custom MPI for BLACS requires specifying "
-- 
2.32.1 (Apple Git-133)


From 881717cba6152eb41304111456be26a49562be51 Mon Sep 17 00:00:00 2001
From: Oleksandr Pavlyk <oleksandr.pavlyk@intel.com>
Date: Fri, 5 Nov 2021 11:38:08 -0500
Subject: [PATCH 2/2] Fixed typo, defined MKL_BLACS_MPICH2 to -1 if undefined

---
 mkl/_mkl_service.pyx | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/mkl/_mkl_service.pyx b/mkl/_mkl_service.pyx
index 7a0b450..62e071c 100644
--- a/mkl/_mkl_service.pyx
+++ b/mkl/_mkl_service.pyx
@@ -31,6 +31,14 @@ import warnings
 cimport mkl._mkl_service as mkl
 
 
+cdef extern from *:
+    """
+    /* defind MKL_BLACS_MPICH2 if undefined */
+    #ifndef MKL_BLACS_MPICH2
+    #define MKL_BLACS_MPICH2 -1
+    #endif
+    """
+
 ctypedef struct MemStatData:
     #  DataAllocatedBytes, AllocatedBuffers
     mkl.MKL_INT64 allocated_bytes
-- 
2.32.1 (Apple Git-133)