gh-90108: Disable LTO on _freeze_module and _testembed (#109581)

LTO optimization is nice to make Python faster, but _freeze_module
and _testembed performance is not important. Using LTO to build these
two programs make a whole Python build way slower, especially
combined with a sanitizer (like ASAN).

diff --git a/Makefile.pre.in b/Makefile.pre.in
index c94ffcb5f15402be4c50ff0a8f718b0b70991786..363be687d5a4320d3a714dd96bde2058f65ace2e 100644 (file)
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -1062,7 +1062,7 @@ regen-re: $(BUILDPYTHON)
        $(RUNSHARED) ./$(BUILDPYTHON) $(srcdir)/Tools/build/generate_re_casefix.py $(srcdir)/Lib/re/_casefix.py
 
 Programs/_testembed: Programs/_testembed.o $(LINK_PYTHON_DEPS)
-       $(LINKCC) $(PY_CORE_LDFLAGS) $(LINKFORSHARED) -o $@ Programs/_testembed.o $(LINK_PYTHON_OBJS) $(LIBS) $(MODLIBS) $(SYSLIBS)
+       $(LINKCC) $(PY_LDFLAGS_NOLTO) $(LINKFORSHARED) -o $@ Programs/_testembed.o $(LINK_PYTHON_OBJS) $(LIBS) $(MODLIBS) $(SYSLIBS)
 
 ############################################################################
 # "Bootstrap Python" used to run deepfreeze.py
@@ -1163,7 +1163,7 @@ Programs/_freeze_module.o: Programs/_freeze_module.c Makefile
 Modules/getpath_noop.o: $(srcdir)/Modules/getpath_noop.c Makefile
 
 Programs/_freeze_module: Programs/_freeze_module.o Modules/getpath_noop.o $(LIBRARY_OBJS_OMIT_FROZEN)
-       $(LINKCC) $(PY_CORE_LDFLAGS) -o $@ Programs/_freeze_module.o Modules/getpath_noop.o $(LIBRARY_OBJS_OMIT_FROZEN) $(LIBS) $(MODLIBS) $(SYSLIBS)
+       $(LINKCC) $(PY_LDFLAGS_NOLTO) -o $@ Programs/_freeze_module.o Modules/getpath_noop.o $(LIBRARY_OBJS_OMIT_FROZEN) $(LIBS) $(MODLIBS) $(SYSLIBS)
 
 # We manually freeze getpath.py rather than through freeze_modules
 Python/frozen_modules/getpath.h: Modules/getpath.py $(FREEZE_MODULE_BOOTSTRAP_DEPS)