default libtype to static to allow windows compilers to not skip

To make Fortran tests useful on Windows, the library_type should default to static,
unless needed to specifically test shared. Shared Fortran libs on Windows for
non-Gfortran compilers is fragile requiring proprietary code syntax.

mesonbuild/compilers/mixins/pgi.py

@@ -66,9 +66,11 @@ class PGICompiler():
 
     def get_std_shared_lib_link_args(self) -> typing.List[str]:
         # PGI -shared is Linux only.
-        if self.compiler_type.is_osx_compiler or self.compiler_type.is_windows_compiler:
-            return []
-        return ['-shared']
+        if self.compiler_type.is_windows_compiler:
+            return ['-Bdynamic', '-Mmakedll']
+        elif not self.compiler_type.is_osx_compiler:
+            return ['-shared']
+        return []
 
     def get_pic_args(self) -> typing.List[str]:
         # PGI -fPIC is Linux only.