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Makefile: Don't filter out -O2 from supplied flags for AVX2 builds

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Drop it from the internal FLAGS variable, but honour -O2 if passed in
CFLAGS. In Debian packages, dpkg-buildflags uses it as hardening
flag, and we get a QA warning if we drop it:
  https://qa.debian.org/bls/bytag/W-dpkg-buildflags-missing.html

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 01:37:50 +01:00
parent b3c9e76dab
commit b501a8f274
1 changed files with 1 additions and 1 deletions
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Makefile
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@ -125,7 +125,7 @@ passt: $(PASST_SRCS) $(HEADERS)
passt.avx2: FLAGS += -Ofast -mavx2 -ftree-vectorize -funroll-loops
passt.avx2: $(PASST_SRCS) $(HEADERS)
$(CC) $(filter-out -O2,$(FLAGS) $(CFLAGS) $(CPPFLAGS)) \
$(CC) $(filter-out -O2,$(FLAGS)) $(CFLAGS) $(CPPFLAGS) \
$(PASST_SRCS) -o passt.avx2 $(LDFLAGS)
passt.avx2: passt