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b3a8fcb553
CityHash64 appears to be the fastest available block hashing algorithm that is good enough for dedupe. It takes much less CPU than the CRC64 function, and avoids hash-collision problems with file formats that use CRC64 as an integrity check on 4K block boundaries. Extracted from git://github.com/google/cityhash with the "CRC" hash functions (which require Intel/AMD CPU support) removed. We don't need those, and they introduce a new (if only theoretical) build-time dependency. Signed-off-by: Zygo Blaxell <bees@furryterror.org>
52 lines
952 B
Makefile
52 lines
952 B
Makefile
TAG ?= $(shell git describe --always --dirty || echo UNKNOWN)
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default: libcrucible.a
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%.a: Makefile
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CRUCIBLE_OBJS = \
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chatter.o \
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city.o \
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cleanup.o \
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crc64.o \
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error.o \
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extentwalker.o \
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fd.o \
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fs.o \
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ntoa.o \
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path.o \
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process.o \
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string.o \
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task.o \
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time.o \
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uuid.o \
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include ../makeflags
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include ../Defines.mk
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BEES_LDFLAGS = $(LDFLAGS)
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configure.h: configure.h.in
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$(TEMPLATE_COMPILER)
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.depends:
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mkdir -p $@
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.depends/%.dep: %.cc configure.h Makefile | .depends
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$(CXX) $(BEES_CXXFLAGS) -M -MF $@ -MT $(<:.cc=.o) $<
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depends.mk: $(CRUCIBLE_OBJS:%.o=.depends/%.dep)
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cat $^ > $@.new
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mv -f $@.new $@
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.version.cc: configure.h Makefile ../makeflags $(CRUCIBLE_OBJS:.o=.cc) ../include/crucible/*.h
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echo "namespace crucible { const char *VERSION = \"$(TAG)\"; }" > $@.new
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mv -f $@.new $@
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include depends.mk
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%.o: %.cc ../makeflags
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$(CXX) $(BEES_CXXFLAGS) -o $@ -c $<
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libcrucible.a: $(CRUCIBLE_OBJS) .version.o
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$(AR) rcs $@ $^
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