Fix Windows again.

compilers.py

@@ -1049,7 +1049,8 @@ def get_gcc_soname_args(gcc_type, shlib_name, path, soversion):
         sostr = ''
     else:
         sostr = '.' + soversion
-    if gcc_type == GCC_STANDARD:
+    if gcc_type == GCC_STANDARD or gcc_type == GCC_MINGW:
+        # Might not be correct for mingw but seems to work.
         return ['-Wl,-soname,lib%s.so%s' % (shlib_name, sostr)]
     elif gcc_type == GCC_OSX:
         return ['-install_name', os.path.join(path, 'lib' + shlib_name + '.dylib')]

ninjabackend.py

@@ -1402,7 +1402,7 @@ rule FORTRAN_DEP_HACK
         basename = target.get_filename()
         aliases = target.get_aliaslist()
         aliascmd = []
-        if shutil.which('ln'):
+        if not mesonlib.is_windows():
             for alias in aliases:
                 aliasfile = os.path.join(self.environment.get_build_dir(), outdir, alias)
                 try: