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Makefile: Honour passed CPPFLAGS, not just CFLAGS

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CPPFLAGS allow the user to pass pre-processor flags. This is unlikely
to be needed at the moment, but the Debian Hardening Walkthrough
reasonably requests it to be handled in order to fully support
hardened build flags:
  https://wiki.debian.org/HardeningWalkthrough#Handling_dpkg-buildflags_in_your_upstream_build_system

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Stefano Brivio 2022-11-13 01:32:00 +01:00
parent 3a2afde87d
commit b3c9e76dab
1 changed files with 7 additions and 7 deletions
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14
Makefile
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@ -60,8 +60,8 @@ HEADERS = $(PASST_HEADERS) seccomp.h
# csum_unaligned(). Mark csum_unaligned() as "noipa" as a quick work-around,
# while we figure out if a corresponding gcc issue has already been reported.
ifeq (,$(filter-out 11 12, $(shell $(CC) -dumpversion)))
ifneq (,$(filter -flto%,$(FLAGS) $(CFLAGS)))
ifneq (,$(filter -O2,$(FLAGS) $(CFLAGS)))
ifneq (,$(filter -flto%,$(FLAGS) $(CFLAGS) $(CPPFLAGS)))
ifneq (,$(filter -O2,$(FLAGS) $(CFLAGS) $(CPPFLAGS)))
FLAGS += -DTCP_HASH_NOINLINE
FLAGS += -DSIPHASH_20B_NOINLINE
FLAGS += -DCSUM_UNALIGNED_NO_IPA
@ -121,11 +121,11 @@ seccomp.h: seccomp.sh $(PASST_SRCS) $(PASST_HEADERS)
@ EXTRA_SYSCALLS="$(EXTRA_SYSCALLS)" ./seccomp.sh $(PASST_SRCS) $(PASST_HEADERS)
passt: $(PASST_SRCS) $(HEADERS)
$(CC) $(FLAGS) $(CFLAGS) $(PASST_SRCS) -o passt $(LDFLAGS)
$(CC) $(FLAGS) $(CFLAGS) $(CPPFLAGS) $(PASST_SRCS) -o passt $(LDFLAGS)
passt.avx2: FLAGS += -Ofast -mavx2 -ftree-vectorize -funroll-loops
passt.avx2: $(PASST_SRCS) $(HEADERS)
$(CC) $(filter-out -O2,$(FLAGS) $(CFLAGS)) \
$(CC) $(filter-out -O2,$(FLAGS) $(CFLAGS) $(CPPFLAGS)) \
$(PASST_SRCS) -o passt.avx2 $(LDFLAGS)
passt.avx2: passt
@ -134,7 +134,7 @@ pasta.avx2 pasta.1 pasta: pasta%: passt%
ln -s $< $@
qrap: $(QRAP_SRCS) passt.h
$(CC) $(FLAGS) $(CFLAGS) $(QRAP_SRCS) -o qrap $(LDFLAGS)
$(CC) $(FLAGS) $(CFLAGS) $(CPPFLAGS) $(QRAP_SRCS) -o qrap $(LDFLAGS)
valgrind: EXTRA_SYSCALLS += rt_sigprocmask rt_sigtimedwait rt_sigaction \
getpid gettid kill clock_gettime mmap \
@ -283,7 +283,7 @@ clang-tidy: $(SRCS) $(HEADERS)
-concurrency-mt-unsafe,\
-readability-identifier-length \
-config='{CheckOptions: [{key: bugprone-suspicious-string-compare.WarnOnImplicitComparison, value: "false"}]}' \
--warnings-as-errors=* $(SRCS) -- $(filter-out -pie,$(FLAGS) $(CFLAGS))
--warnings-as-errors=* $(SRCS) -- $(filter-out -pie,$(FLAGS) $(CFLAGS) $(CPPFLAGS))
SYSTEM_INCLUDES := /usr/include $(wildcard /usr/include/$(TARGET))
ifeq ($(shell $(CC) -v 2>&1 | grep -c "gcc version"),1)
@ -299,5 +299,5 @@ cppcheck: $(SRCS) $(HEADERS)
$(SYSTEM_INCLUDES:%=--suppress=unmatchedSuppression:%/*) \
--inline-suppr \
--suppress=unusedStructMember \
$(filter -D%,$(FLAGS) $(CFLAGS)) \
$(filter -D%,$(FLAGS) $(CFLAGS) $(CPPFLAGS)) \
.