don't regenerate _bootstrap_python every time

Author: SilvanScherrer

Makefile.pre.in

@@ -1462,7 +1462,7 @@ BOOTSTRAP_HEADERS = \
 
 Programs/_bootstrap_python.o: Programs/_bootstrap_python.c $(BOOTSTRAP_HEADERS) $(PYTHON_HEADERS)
 
-_bootstrap_python: $(LIBRARY_OBJS_OMIT_FROZEN) Programs/_bootstrap_python.o Modules/getpath.o Modules/Setup.local
+_bootstrap_python$(EXE): $(LIBRARY_OBJS_OMIT_FROZEN) Programs/_bootstrap_python.o Modules/getpath.o Modules/Setup.local
 	$(LINKCC) $(PY_LDFLAGS_NOLTO) -o $@ $(LIBRARY_OBJS_OMIT_FROZEN) \
 		Programs/_bootstrap_python.o Modules/getpath.o $(LIBS) $(MODLIBS) $(SYSLIBS)
 
@@ -2980,10 +2980,10 @@ clean-retain-profile: pycremoval
 	find build -name '*.py' -exec rm -f {} ';' || true
 	find build -name '*.py[co]' -exec rm -f {} ';' || true
 	-rm -f pybuilddir.txt
-	-rm -f _bootstrap_python
+	-rm -f _bootstrap_python$(EXE)
 	-rm -f python.html python*.js python.data python*.symbols python*.map
 	-rm -f $(WASM_STDLIB)
-	-rm -f Programs/_testembed Programs/_freeze_module
+	-rm -f Programs/_testembed Programs/_freeze_module$(EXE)
 	-rm -rf Python/deepfreeze
 	-rm -f Python/frozen_modules/*.h
 	-rm -f Python/frozen_modules/MANIFEST

configure.ac

@@ -171,7 +171,7 @@ AC_ARG_WITH([build-python],
       [AC_MSG_ERROR([Cross compiling requires --with-build-python])]
     )
     PYTHON_FOR_BUILD='./$(BUILDPYTHON) -E'
-    PYTHON_FOR_FREEZE="./_bootstrap_python"
+    PYTHON_FOR_FREEZE="./_bootstrap_python\$(EXE)"
   ]
 )
 AC_SUBST([PYTHON_FOR_BUILD])
@@ -194,7 +194,7 @@ AS_VAR_IF([cross_compiling], [yes],
     FREEZE_MODULE_BOOTSTRAP='./Programs/_freeze_module$(EXE)'
     FREEZE_MODULE_BOOTSTRAP_DEPS="Programs/_freeze_module\$(EXE)"
     FREEZE_MODULE='$(PYTHON_FOR_FREEZE) $(srcdir)/Programs/_freeze_module.py'
-    FREEZE_MODULE_DEPS="_bootstrap_python \$(srcdir)/Programs/_freeze_module.py"
+    FREEZE_MODULE_DEPS="_bootstrap_python\$(EXE) \$(srcdir)/Programs/_freeze_module.py"
     PYTHON_FOR_BUILD_DEPS='$(BUILDPYTHON)'
   ]
 )