make sure llvm toolchain still works on windows

Author: timfel

graalpython/lib-graalpython/_sysconfig.py

@@ -100,7 +100,7 @@ def _get_posix_vars():
         g['LDSHARED'] = get_toolchain('CC') + " -bundle -undefined dynamic_lookup"
         g['LDFLAGS'] = "-bundle -undefined dynamic_lookup"
     elif win32_native:
-        g['LDFLAGS'] = f"-L{__graalpython__.capi_home.replace(os.path.sep, '/')} -llibpython.{so_abi}"
+        g['LDFLAGS'] = f"-L{__graalpython__.capi_home.replace(os.path.sep, '/')}"
         g['LDSHARED_WINDOWS'] = f"{g['LDSHARED_LINUX']} {g['LDFLAGS']}"
         g['LDSHARED'] = g['LDSHARED_WINDOWS']
     else:

graalpython/lib-python/3/distutils/ccompiler.py

@@ -930,7 +930,7 @@ def mkpath (self, name, mode=0o777):
 
     # OS name mappings
     ('posix', 'unix'),
-    ('nt', 'msvc'),
+    ('nt', 'msvc') if __graalpython__.use_system_toolchain else ('nt', 'unix'),
     )
 
 def get_default_compiler(osname=None, platform=None):

graalpython/lib-python/3/distutils/command/build_ext.py

@@ -720,6 +720,9 @@ def get_libraries(self, ext):
                     template = template + '_d'
                 pythonlib = (template %
                        (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff))
+                # Begin Truffle change
+                pythonlib = f"python-{__graalpython__.platform_id}"
+                # End Truffle change
                 # don't extend ext.libraries, it may be shared with other
                 # extensions, it is a reference to the original list
                 return ext.libraries + [pythonlib]