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build: verify that the assembler can handle crc32 functions

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Also, enable crc32 even if -msse4.2 wasn't added by us, as long as it works.
This allows custom flags (such as -march=native) to work as expected.
This commit is contained in:
Cory Fields
2017-07-12 12:58:20 -04:00
parent e8b95239ee
commit d34d77a51b
2 changed files with 26 additions and 3 deletions
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2
src/Makefile.leveldb.include
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@@ -142,7 +142,7 @@ leveldb_libmemenv_a_SOURCES += leveldb/helpers/memenv/memenv.h
leveldb_libleveldb_sse42_a_CPPFLAGS = $(leveldb_libleveldb_a_CPPFLAGS)
leveldb_libleveldb_sse42_a_CXXFLAGS = $(leveldb_libleveldb_a_CXXFLAGS)
if ENABLE_SSE42
if ENABLE_HWCRC32
leveldb_libleveldb_sse42_a_CPPFLAGS += -DLEVELDB_PLATFORM_POSIX_SSE
leveldb_libleveldb_sse42_a_CXXFLAGS += $(SSE42_CXXFLAGS)
endif