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| author | Damien George <damien.p.george@gmail.com> | 2020-05-21 11:27:09 +1000 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2020-05-27 23:10:23 +1000 |
| commit | a902b69dd51de0e3fe3bb6955296591d6a93abab (patch) | |
| tree | 5bda4b15d5b629ebe714d66a49d9271943fd82fe /py/py.mk | |
| parent | 4bbba3060d451d4dfa147ebc793acd1cc7364e5a (diff) | |
py/py.mk: Use additional CFLAGS to compile string0.c.
Otherwise functions like memset might get optimised to call themselves (eg
with gcc 10). And provide CFLAGS_BUILTIN so these options can be changed
by a port if needed.
Fixes issue #6053.
Diffstat (limited to 'py/py.mk')
| -rw-r--r-- | py/py.mk | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -266,6 +266,11 @@ $(HEADER_BUILD)/moduledefs.h: $(SRC_QSTR) $(QSTR_GLOBAL_DEPENDENCIES) | $(HEADER SRC_QSTR += $(HEADER_BUILD)/moduledefs.h +# Standard C functions like memset need to be compiled with special flags so +# the compiler does not optimise these functions in terms of themselves. +CFLAGS_BUILTIN ?= -ffreestanding -fno-builtin -fno-lto +$(BUILD)/lib/libc/string0.o: CFLAGS += $(CFLAGS_BUILTIN) + # Force nlr code to always be compiled with space-saving optimisation so # that the function preludes are of a minimal and predictable form. $(PY_BUILD)/nlr%.o: CFLAGS += -Os |