fix compilation

Author: picnixz

Modules/_ctypes/_ctypes.c

@@ -125,6 +125,7 @@ bytes(cdata)
 #include "ctypes.h"
 
 #include "pycore_long.h"          // _PyLong_GetZero()
+#include "pycore_pyerrors.h"      // _PyErr_SetLocaleString()
 
 ctypes_state global_state;
 

Modules/_ctypes/callproc.c

@@ -96,6 +96,7 @@
 #define DONT_USE_SEH
 #endif
 
+#include "pycore_pyerrors.h"        // _PyErr_SetLocaleString()
 #include "pycore_runtime.h"         // _PyRuntime
 #include "pycore_global_objects.h"  // _Py_ID()
 

Modules/_gdbmmodule.c

@@ -3,6 +3,11 @@
 /* Author: Anthony Baxter, after dbmmodule.c */
 /* Doc strings: Mitch Chapman */
 
+// required for pycore_pyerrors.h
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include "pycore_pyerrors.h"        // _PyErr_SetLocaleString()