bpo-45950: Attempt to fix macOS builds of _bootstrap_python when using framework

Author: tiran

Makefile.pre.in

@@ -954,9 +954,9 @@ BOOTSTRAP_HEADERS = \
 
 Programs/_bootstrap_python.o: Programs/_bootstrap_python.c $(BOOTSTRAP_HEADERS) $(PYTHON_HEADERS)
 
-_bootstrap_python: $(LIBRARY_OBJS_OMIT_FROZEN) Programs/_bootstrap_python.o Modules/getpath.o Modules/Setup.local
+_bootstrap_python: $(LIBRARY_OBJS_OMIT_FROZEN) Programs/_bootstrap_python.o Modules/getpath_bootstrap.o Modules/Setup.local
 	$(LINKCC) $(PY_LDFLAGS_NOLTO) -o $@ $(LIBRARY_OBJS_OMIT_FROZEN) \
-		Programs/_bootstrap_python.o Modules/getpath.o $(LIBS) $(MODLIBS) $(SYSLIBS)
+		Programs/_bootstrap_python.o Modules/getpath_bootstrap.o $(LIBS) $(MODLIBS) $(SYSLIBS)
 
 ############################################################################
 # Deepfreeze targets
@@ -1205,6 +1205,18 @@ Modules/getpath.o: $(srcdir)/Modules/getpath.c Python/frozen_modules/getpath.h M
 		-DPLATLIBDIR='"$(PLATLIBDIR)"' \
 		-o $@ $(srcdir)/Modules/getpath.c
 
+# like getpath.o with additional -DPY_BOOTSTRAP_PYTHON=1
+Modules/getpath_bootstrap.o: $(srcdir)/Modules/getpath.c Python/frozen_modules/getpath.h Makefile $(PYTHON_HEADERS)
+	$(CC) -c $(PY_CORE_CFLAGS) -DPYTHONPATH='"$(PYTHONPATH)"' \
+		-DPREFIX='"$(prefix)"' \
+		-DEXEC_PREFIX='"$(exec_prefix)"' \
+		-DVERSION='"$(VERSION)"' \
+		-DVPATH='"$(VPATH)"' \
+		-DPLATLIBDIR='"$(PLATLIBDIR)"' \
+		-DPY_BOOTSTRAP_PYTHON=1 \
+		-o $@ $(srcdir)/Modules/getpath.c
+
+
 Programs/python.o: $(srcdir)/Programs/python.c
 	$(MAINCC) -c $(PY_CORE_CFLAGS) -o $@ $(srcdir)/Programs/python.c
 

Modules/getpath.c

@@ -754,7 +754,8 @@ library_to_dict(PyObject *dict, const char *key)
     if (PyWin_DLLhModule) {
         return winmodule_to_dict(dict, key, PyWin_DLLhModule);
     }
-#elif defined(WITH_NEXT_FRAMEWORK)
+#elif defined(WITH_NEXT_FRAMEWORK) && !defined(PY_BOOTSTRAP_PYTHON)
+    // _bootstrap_python does not use framework and crashes
     static const char modPath[MAXPATHLEN + 1];
     static int modPathInitialized = -1;
     if (modPathInitialized < 0) {