1 files changed, 65 insertions, 0 deletions
diff --git a/numpy/distutils/system_info.py b/numpy/distutils/system_info.py
index 2c1103d27..05eedfd3f 100644
--- a/numpy/distutils/system_info.py
+++ b/numpy/distutils/system_info.py
@@ -126,6 +126,7 @@ import os
 import re
 import copy
 import warnings
+import atexit
 from glob import glob
 from functools import reduce
 if sys.version_info[0] < 3:
@@ -469,6 +470,8 @@ class system_info(object):
     verbosity = 1
     saved_results = {}
 
+    shared_libs = set()
+
     notfounderror = NotFoundError
 
     def __init__(self,
@@ -1766,10 +1769,70 @@ class openblas_lapack_info(openblas_info):
     _lib_names = ['openblas']
     notfounderror = BlasNotFoundError
 
+    def create_msvc_openblas_lib(self, info):
+        from numpy.distutils.fcompiler import new_fcompiler
+        
+        try:
+            c = distutils.ccompiler.new_compiler()
+            if c.compiler_type != "msvc":
+                return False
+
+            f = new_fcompiler(compiler="gnu95", c_compiler=c)
+            f.customize('')
+
+            libraries=info['libraries']
+            library_dirs=info['library_dirs']
+
+            # For each gfortran-compatible static library, 
+            # we need to generate a dynamic library with 
+            # no dependencies.
+
+            # First, find the full path to each library directory
+            library_paths = []
+            for library in libraries:
+                for library_dir in library_dirs:
+                    # MinGW static ext will be .a
+                    fullpath = os.path.join(library_dir, library + '.a')
+                    if os.path.isfile(fullpath):
+                        library_paths.append(fullpath)
+                        break   
+                else:
+                    return False
+
+
+            tmpdir = tempfile.mkdtemp()
+            # Next, convert each library to MSVC format
+            for library, library_path in zip(libraries, library_paths):
+                mingw_lib = os.path.join(tmpdir, 'lib'+library+'.a')
+                shutil.copy(library_path, mingw_lib)
+                msvc_lib = f.link_wrapper_lib(['-Wl,--whole-archive',
+                                                mingw_lib,
+                                                '-Wl,--no-whole-archive',
+                                                ],
+                                            output_dir=tmpdir)
+
+                msvc_lib_path = library + '.lib'
+
+                # Now copy
+                print('copying ' + msvc_lib + ' -> ' + msvc_lib_path)
+                shutil.copy(msvc_lib, msvc_lib_path)
+
+                atexit.register(os.remove, msvc_lib_path)
+
+            system_info.shared_libs.add('')
+
+            return True
+        except:
+            return False
+
     def check_embedded_lapack(self, info):
         res = False
         c = distutils.ccompiler.new_compiler()
         c.customize('')
+
+        if c.compiler_type == "msvc" and not self.create_msvc_openblas_lib(info):
+            return False
+
         tmpdir = tempfile.mkdtemp()
         s = """void zungqr();
         int main(int argc, const char *argv[])
@@ -1784,6 +1847,8 @@ class openblas_lapack_info(openblas_info):
             extra_args = info['extra_link_args']
         except Exception:
             extra_args = []
+        if sys.version_info < (3, 5) and sys.version_info > (3, 0) and c.compiler_type == "msvc":
+            extra_args.append("/MANIFEST")
         try:
             with open(src, 'wt') as f:
                 f.write(s)