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| author | Jett Rink <jettrink@chromium.org> | 2020-02-07 10:42:41 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-02-11 01:45:42 +0000 |
| commit | 1bc5961c7e2d4e7e623e69f628cb0069e02b6b4d (patch) | |
| tree | cc73bc7469b4c1272372bbb97fd83f526d4fb526 | |
| parent | e18f1e42127a856ea6591e13ee6c26fe5781848d (diff) | |
| download | chrome-ec-1bc5961c7e2d4e7e623e69f628cb0069e02b6b4d.tar.gz | |
cleanup: add comments for MT flag use
Document why we need the MT flag as a compiler option
BRANCH=none
BUG=none
TEST=builds
Change-Id: Id6bceacc3b0af110f79d9f727ded595950fa2afb
Signed-off-by: Jett Rink <jettrink@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2044358
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
| -rw-r--r-- | Makefile.rules | 7 | ||||
| -rw-r--r-- | test/tpm_test/Makefile | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/Makefile.rules b/Makefile.rules index 915766051a..a8357a5b93 100644 --- a/Makefile.rules +++ b/Makefile.rules @@ -57,6 +57,11 @@ endif # the resulting ec.bin export STATIC_VERSION +# Commonly used compiler options used in these scripts +# +# -MT explicitly sets target file name in generated .d files to work around +# a ccache issue. + # commands to build all targets cmd_libec = $(LD) -r $^ -o $@.1.o ${silent_err} && \ $(OBJCOPY) --localize-hidden $@.1.o $@.2.o ${silent_err} && \ @@ -599,6 +604,8 @@ $(out)/tags: $(out)/cscope.files npx-monitor-dir: $(Q)mkdir -p ${out}/chip/npcx/spiflashfw +# See "Commonly used compiler options" for more documentation + # TODO: optional make rules for PROJECT_EXTRA $(npcx-monitor-fw-bin):$(npcx-monitor-fw).c npx-monitor-dir $(if $(V),,@echo ' EXTBIN ' $(subst $(out)/,,$@) ; ) diff --git a/test/tpm_test/Makefile b/test/tpm_test/Makefile index e45f32ce0b..8942f0db1d 100644 --- a/test/tpm_test/Makefile +++ b/test/tpm_test/Makefile @@ -57,6 +57,7 @@ $(obj)/%.o: $(obj)/%.c $(call echo," CC $(notdir $@)") $(Q)gcc $(CFLAGS) -o $@ $< +# See "Commonly used compiler options" for more documentation $(obj)/%.o: %.c $(call echo," CC $(notdir $@)") $(Q)gcc $(CFLAGS) -Wall -Werror -MMD -MF $@.d -MT $@ -o $@ $< |