# Redis Makefile
# Copyright (C) 2009 Salvatore Sanfilippo <antirez at gmail dot com>
# This file is released under the BSD license, see the COPYING file
+#
+# The Makefile composes the final FINAL_CFLAGS and FINAL_LDFLAGS using
+# what is needed for Redis plus the standard CFLAGS and LDFLAGS passed.
+# However when building the dependencies (Jemalloc, Lua, Hiredis, ...)
+# CFLAGS and LDFLAGS are propagated to the dependencies, so to pass
+# flags only to be used when compiling / linking Redis itself REDIS_CFLAGS
+# and REDIS_LDFLAGS are used instead (this is the case of 'make gcov').
+#
+# Dependencies are stored in the Makefile.dep file. To rebuild this file
+# Just use 'make dep', but this is only needed by developers.
release_hdr := $(shell sh -c './mkreleasehdr.sh')
uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')
OPTIMIZATION?=-O2
+DEPENDENCY_TARGETS=hiredis linenoise lua
-ifeq ($(uname_S),Linux)
- ifneq ($(FORCE_LIBC_MALLOC),yes)
- USE_JEMALLOC=yes
- endif
-endif
+# Default settings
+STD= -std=c99 -pedantic
+WARN= -Wall
+OPT= $(OPTIMIZATION)
-ifeq ($(uname_S),SunOS)
- CFLAGS?=-std=c99 -pedantic $(OPTIMIZATION) -Wall -W -D__EXTENSIONS__ -D_XPG6
- CCLINK?=-ldl -lnsl -lsocket -lm -lpthread
- DEBUG?=-g -ggdb
+# Default allocator
+ifeq ($(uname_S),Linux)
+ MALLOC=jemalloc
else
- CFLAGS?=-std=c99 -pedantic $(OPTIMIZATION) -Wall -W $(ARCH) $(PROF)
- CCLINK?=-lm -pthread
- DEBUG?=-g -rdynamic -ggdb
+ MALLOC=libc
endif
+# Backwards compatibility for selecting an allocator
ifeq ($(USE_TCMALLOC),yes)
- ALLOD_DEPS=
- ALLOC_LINK=-ltcmalloc
- ALLOC_FLAGS=-DUSE_TCMALLOC
+ MALLOC=tcmalloc
endif
ifeq ($(USE_TCMALLOC_MINIMAL),yes)
- ALLOD_DEPS=
- ALLOC_LINK=-ltcmalloc_minimal
- ALLOC_FLAGS=-DUSE_TCMALLOC
+ MALLOC=tcmalloc_minimal
endif
ifeq ($(USE_JEMALLOC),yes)
- ALLOC_DEP=../deps/jemalloc/lib/libjemalloc.a
- ALLOC_LINK=$(ALLOC_DEP) -ldl
- ALLOC_FLAGS=-DUSE_JEMALLOC -I../deps/jemalloc/include
+ MALLOC=jemalloc
+endif
+
+# Override default settings if possible
+-include .make-settings
+
+ifeq ($(uname_S),SunOS)
+ FINAL_CFLAGS= $(STD) $(WARN) $(OPT) $(DEBUG) $(CFLAGS) $(REDIS_CFLAGS) -D__EXTENSIONS__ -D_XPG6
+ FINAL_LDFLAGS= $(LDFLAGS) $(REDIS_LDFLAGS) -g -ggdb
+ FINAL_LIBS= -ldl -lnsl -lsocket -lm -lpthread
+ DEBUG= -g -ggdb
+else
+ FINAL_CFLAGS= $(STD) $(WARN) $(OPT) $(DEBUG) $(CFLAGS) $(REDIS_CFLAGS)
+ FINAL_LDFLAGS= $(LDFLAGS) $(REDIS_LDFLAGS) -g -rdynamic -ggdb
+ FINAL_LIBS= -lm -pthread
+ DEBUG= -g -rdynamic -ggdb
endif
-CCLINK+= $(ALLOC_LINK)
-CFLAGS+= $(ALLOC_FLAGS)
+# Include paths to dependencies
+FINAL_CFLAGS+= -I../deps/hiredis -I../deps/linenoise -I../deps/lua/src
-CCOPT= $(CFLAGS) $(ARCH) $(PROF)
+ifeq ($(MALLOC),tcmalloc)
+ FINAL_CFLAGS+= -DUSE_TCMALLOC
+ FINAL_LIBS+= -ltcmalloc
+endif
+
+ifeq ($(MALLOC),tcmalloc_minimal)
+ FINAL_CFLAGS+= -DUSE_TCMALLOC
+ FINAL_LIBS+= -ltcmalloc_minimal
+endif
+
+ifeq ($(MALLOC),jemalloc)
+ DEPENDENCY_TARGETS+= jemalloc
+ FINAL_CFLAGS+= -DUSE_JEMALLOC -I../deps/jemalloc/include
+ FINAL_LIBS+= ../deps/jemalloc/lib/libjemalloc.a -ldl
+endif
-PREFIX= /usr/local
+REDIS_CC=$(QUIET_CC)$(CC) $(FINAL_CFLAGS)
+REDIS_LD=$(QUIET_LINK)$(CC) $(FINAL_LDFLAGS)
+
+PREFIX?=/usr/local
INSTALL_BIN= $(PREFIX)/bin
-INSTALL= cp -p
+INSTALL= cp -pf
CCCOLOR="\033[34m"
LINKCOLOR="\033[34;1m"
ENDCOLOR="\033[0m"
ifndef V
-QUIET_CC = @printf ' %b %b\n' $(CCCOLOR)CC$(ENDCOLOR) $(SRCCOLOR)$@$(ENDCOLOR);
-QUIET_LINK = @printf ' %b %b\n' $(LINKCOLOR)LINK$(ENDCOLOR) $(BINCOLOR)$@$(ENDCOLOR);
+QUIET_CC = @printf ' %b %b\n' $(CCCOLOR)CC$(ENDCOLOR) $(SRCCOLOR)$@$(ENDCOLOR) 1>&2;
+QUIET_LINK = @printf ' %b %b\n' $(LINKCOLOR)LINK$(ENDCOLOR) $(BINCOLOR)$@$(ENDCOLOR) 1>&2;
endif
-OBJ = adlist.o ae.o anet.o dict.o redis.o sds.o zmalloc.o lzf_c.o lzf_d.o pqsort.o zipmap.o sha1.o ziplist.o release.o networking.o util.o object.o db.o replication.o rdb.o t_string.o t_list.o t_set.o t_zset.o t_hash.o config.o aof.o pubsub.o multi.o debug.o sort.o intset.o syncio.o cluster.o crc16.o endian.o slowlog.o scripting.o bio.o rio.o
-BENCHOBJ = ae.o anet.o redis-benchmark.o sds.o adlist.o zmalloc.o
-CLIOBJ = anet.o sds.o adlist.o redis-cli.o zmalloc.o release.o
-CHECKDUMPOBJ = redis-check-dump.o lzf_c.o lzf_d.o
-CHECKAOFOBJ = redis-check-aof.o
-
-PRGNAME = redis-server
-BENCHPRGNAME = redis-benchmark
-CLIPRGNAME = redis-cli
-CHECKDUMPPRGNAME = redis-check-dump
-CHECKAOFPRGNAME = redis-check-aof
-
-all: redis-benchmark redis-cli redis-check-dump redis-check-aof redis-server
+REDIS_SERVER_NAME= redis-server
+REDIS_SERVER_OBJ= adlist.o ae.o anet.o dict.o redis.o sds.o zmalloc.o lzf_c.o lzf_d.o pqsort.o zipmap.o sha1.o ziplist.o release.o networking.o util.o object.o db.o replication.o rdb.o t_string.o t_list.o t_set.o t_zset.o t_hash.o config.o aof.o pubsub.o multi.o debug.o sort.o intset.o syncio.o migrate.o endianconv.o slowlog.o scripting.o bio.o rio.o rand.o memtest.o crc64.o bitops.o
+REDIS_CLI_NAME= redis-cli
+REDIS_CLI_OBJ= anet.o sds.o adlist.o redis-cli.o zmalloc.o release.o anet.o ae.o
+REDIS_BENCHMARK_NAME= redis-benchmark
+REDIS_BENCHMARK_OBJ= ae.o anet.o redis-benchmark.o sds.o adlist.o zmalloc.o redis-benchmark.o
+REDIS_CHECK_DUMP_NAME= redis-check-dump
+REDIS_CHECK_DUMP_OBJ= redis-check-dump.o lzf_c.o lzf_d.o crc64.o
+REDIS_CHECK_AOF_NAME= redis-check-aof
+REDIS_CHECK_AOF_OBJ= redis-check-aof.o
+
+all: $(REDIS_SERVER_NAME) $(REDIS_CLI_NAME) $(REDIS_BENCHMARK_NAME) $(REDIS_CHECK_DUMP_NAME) $(REDIS_CHECK_AOF_NAME)
@echo ""
@echo "Hint: To run 'make test' is a good idea ;)"
@echo ""
+.PHONY: all
+
# Deps (use make dep to generate this)
-adlist.o: adlist.c adlist.h zmalloc.h
-ae.o: ae.c ae.h zmalloc.h config.h ae_kqueue.c
-ae_epoll.o: ae_epoll.c
-ae_kqueue.o: ae_kqueue.c
-ae_select.o: ae_select.c
-anet.o: anet.c fmacros.h anet.h
-aof.o: aof.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-bio.o: bio.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h bio.h
-cluster.o: cluster.c redis.h fmacros.h config.h ae.h sds.h dict.h \
- adlist.h zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-config.o: config.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-crc16.o: crc16.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-db.o: db.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-debug.o: debug.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h sha1.h
-dict.o: dict.c fmacros.h dict.h zmalloc.h
-endian.o: endian.c
-intset.o: intset.c intset.h zmalloc.h endian.h
-lzf_c.o: lzf_c.c lzfP.h
-lzf_d.o: lzf_d.c lzfP.h
-multi.o: multi.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-networking.o: networking.c redis.h fmacros.h config.h ae.h sds.h dict.h \
- adlist.h zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-object.o: object.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-pqsort.o: pqsort.c
-pubsub.o: pubsub.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-rdb.o: rdb.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h lzf.h
-redis-benchmark.o: redis-benchmark.c fmacros.h ae.h \
- ../deps/hiredis/hiredis.h sds.h adlist.h zmalloc.h
-redis-check-aof.o: redis-check-aof.c fmacros.h config.h
-redis-check-dump.o: redis-check-dump.c lzf.h
-redis-cli.o: redis-cli.c fmacros.h version.h ../deps/hiredis/hiredis.h \
- sds.h zmalloc.h ../deps/linenoise/linenoise.h help.h
-redis.o: redis.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h slowlog.h \
- bio.h asciilogo.h
-release.o: release.c release.h
-replication.o: replication.c redis.h fmacros.h config.h ae.h sds.h dict.h \
- adlist.h zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-scripting.o: scripting.c redis.h fmacros.h config.h ae.h sds.h dict.h \
- adlist.h zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h \
- sha1.h
-rio.o: rio.c sds.h
-sds.o: sds.c sds.h zmalloc.h
-sha1.o: sha1.c sha1.h config.h
-slowlog.o: slowlog.c redis.h fmacros.h config.h ae.h sds.h dict.h \
- adlist.h zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h \
- slowlog.h
-sort.o: sort.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h pqsort.h
-syncio.o: syncio.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-t_hash.o: t_hash.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-t_list.o: t_list.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-t_set.o: t_set.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-t_string.o: t_string.c redis.h fmacros.h config.h ae.h sds.h dict.h \
- adlist.h zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-t_zset.o: t_zset.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
- zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h util.h
-util.o: util.c fmacros.h util.h
-ziplist.o: ziplist.c zmalloc.h util.h ziplist.h endian.h
-zipmap.o: zipmap.c zmalloc.h endian.h
-zmalloc.o: zmalloc.c config.h zmalloc.h
-
-.PHONY: dependencies
-
-dependencies:
- @printf '%b %b\n' $(MAKECOLOR)MAKE$(ENDCOLOR) $(BINCOLOR)hiredis$(ENDCOLOR)
- @cd ../deps/hiredis && $(MAKE) static ARCH="$(ARCH)"
- @printf '%b %b\n' $(MAKECOLOR)MAKE$(ENDCOLOR) $(BINCOLOR)linenoise$(ENDCOLOR)
- @cd ../deps/linenoise && $(MAKE) ARCH="$(ARCH)"
- @echo $(MAKECOLOR)MAKE$(ENDCOLOR) $(BINCOLOR)Lua ansi$(ENDCOLOR)
- @cd ../deps/lua && $(MAKE) ARCH="$(ARCH)" ansi
-
-../deps/jemalloc/lib/libjemalloc.a:
- cd ../deps/jemalloc && ./configure $(JEMALLOC_CFLAGS) --with-jemalloc-prefix=je_ --enable-cc-silence && $(MAKE) lib/libjemalloc.a
-
-redis-server: dependencies $(OBJ)
- $(QUIET_LINK)$(CC) -o $(PRGNAME) $(CCOPT) $(DEBUG) $(OBJ) $(CCLINK) $(ALLOC_LINK) ../deps/lua/src/liblua.a
-
-redis-benchmark: dependencies $(BENCHOBJ)
- @cd ../deps/hiredis && $(MAKE) static
- $(QUIET_LINK)$(CC) -o $(BENCHPRGNAME) $(CCOPT) $(DEBUG) $(BENCHOBJ) ../deps/hiredis/libhiredis.a $(CCLINK) $(ALLOC_LINK)
-
-redis-benchmark.o:
- $(QUIET_CC)$(CC) -c $(CFLAGS) -I../deps/hiredis $(DEBUG) $(COMPILE_TIME) $<
-
-redis-cli: dependencies $(CLIOBJ)
- $(QUIET_LINK)$(CC) -o $(CLIPRGNAME) $(CCOPT) $(DEBUG) $(CLIOBJ) ../deps/hiredis/libhiredis.a ../deps/linenoise/linenoise.o $(CCLINK) $(ALLOC_LINK)
-
-redis-cli.o:
- $(QUIET_CC)$(CC) -c $(CFLAGS) -I../deps/hiredis -I../deps/linenoise $(DEBUG) $(COMPILE_TIME) $<
-
-redis-check-dump: $(CHECKDUMPOBJ)
- $(QUIET_LINK)$(CC) -o $(CHECKDUMPPRGNAME) $(CCOPT) $(DEBUG) $(CHECKDUMPOBJ) $(CCLINK) $(ALLOC_LINK)
-
-redis-check-aof: $(CHECKAOFOBJ)
- $(QUIET_LINK)$(CC) -o $(CHECKAOFPRGNAME) $(CCOPT) $(DEBUG) $(CHECKAOFOBJ) $(CCLINK) $(ALLOC_LINK)
-
-# Because the jemalloc.h header is generated as a part of the jemalloc build
-# process, building it should complete before building any other object.
-%.o: %.c $(ALLOC_DEP)
- $(QUIET_CC)$(CC) -c $(CFLAGS) $(DEBUG) $(COMPILE_TIME) -I../deps/lua/src $<
+include Makefile.dep
+
+dep:
+ $(REDIS_CC) -MM *.c > Makefile.dep
+
+.PHONY: dep
+
+persist-settings: distclean
+ echo STD=$(STD) >> .make-settings
+ echo WARN=$(WARN) >> .make-settings
+ echo OPT=$(OPT) >> .make-settings
+ echo MALLOC=$(MALLOC) >> .make-settings
+ echo CFLAGS=$(CFLAGS) >> .make-settings
+ echo LDFLAGS=$(LDFLAGS) >> .make-settings
+ echo REDIS_CFLAGS=$(REDIS_CFLAGS) >> .make-settings
+ echo REDIS_LDFLAGS=$(REDIS_LDFLAGS) >> .make-settings
+ echo PREV_FINAL_CFLAGS=$(FINAL_CFLAGS) >> .make-settings
+ echo PREV_FINAL_LDFLAGS=$(FINAL_LDFLAGS) >> .make-settings
+ -(cd ../deps && $(MAKE) $(DEPENDENCY_TARGETS))
+
+.PHONY: persist-settings
+
+# Prerequisites target
+.make-prerequisites:
+ @touch $@
+
+# Clean everything, persist settings and build dependencies if anything changed
+ifneq ($(strip $(PREV_FINAL_CFLAGS)), $(strip $(FINAL_CFLAGS)))
+.make-prerequisites: persist-settings
+endif
+
+ifneq ($(strip $(PREV_FINAL_LDFLAGS)), $(strip $(FINAL_LDFLAGS)))
+.make-prerequisites: persist-settings
+endif
+
+# redis-server
+$(REDIS_SERVER_NAME): $(REDIS_SERVER_OBJ)
+ $(REDIS_LD) -o $@ $^ ../deps/lua/src/liblua.a $(FINAL_LIBS)
+
+# redis-cli
+$(REDIS_CLI_NAME): $(REDIS_CLI_OBJ)
+ $(REDIS_LD) -o $@ $^ ../deps/hiredis/libhiredis.a ../deps/linenoise/linenoise.o $(FINAL_LIBS)
+
+# redis-benchmark
+$(REDIS_BENCHMARK_NAME): $(REDIS_BENCHMARK_OBJ)
+ $(REDIS_LD) -o $@ $^ ../deps/hiredis/libhiredis.a $(FINAL_LIBS)
+
+# redis-check-dump
+$(REDIS_CHECK_DUMP_NAME): $(REDIS_CHECK_DUMP_OBJ)
+ $(REDIS_LD) -o $@ $^ $(FINAL_LIBS)
+
+# redis-check-aof
+$(REDIS_CHECK_AOF_NAME): $(REDIS_CHECK_AOF_OBJ)
+ $(REDIS_LD) -o $@ $^ $(FINAL_LIBS)
+
+# Because the jemalloc.h header is generated as a part of the jemalloc build,
+# building it should complete before building any other object. Instead of
+# depending on a single artifact, build all dependencies first.
+%.o: %.c .make-prerequisites
+ $(REDIS_CC) -c $<
clean:
- rm -rf $(PRGNAME) $(BENCHPRGNAME) $(CLIPRGNAME) $(CHECKDUMPPRGNAME) $(CHECKAOFPRGNAME) *.o *.gcda *.gcno *.gcov
- cd ../deps/hiredis && $(MAKE) $@
- cd ../deps/linenoise && $(MAKE) $@
- cd ../deps/lua && $(MAKE) $@
- -(cd ../deps/jemalloc && $(MAKE) distclean)
+ rm -rf $(REDIS_SERVER_NAME) $(REDIS_CLI_NAME) $(REDIS_BENCHMARK_NAME) $(REDIS_CHECK_DUMP_NAME) $(REDIS_CHECK_AOF_NAME) *.o *.gcda *.gcno *.gcov redis.info lcov-html
-dep:
- $(CC) -MM *.c -I ../deps/hiredis -I ../deps/linenoise
+.PHONY: clean
+
+distclean: clean
+ -(cd ../deps && $(MAKE) distclean)
+ -(rm -f .make-*)
-test: redis-server redis-check-aof
+.PHONY: distclean
+
+test: $(REDIS_SERVER_NAME) $(REDIS_CHECK_AOF_NAME)
@(cd ..; ./runtest)
-bench:
- ./redis-benchmark
+lcov:
+ $(MAKE) gcov
+ @(set -e; cd ..; ./runtest --clients 1)
+ @geninfo -o redis.info .
+ @genhtml --legend -o lcov-html redis.info
+
+.PHONY: lcov
-log:
- git log '--pretty=format:%ad %s (%cn)' --date=short > ../Changelog
+bench: $(REDIS_BENCHMARK_NAME)
+ ./$(REDIS_BENCHMARK_NAME)
32bit:
@echo ""
@echo "WARNING: if it fails under Linux you probably need to install libc6-dev-i386"
@echo ""
- $(MAKE) ARCH="-m32" JEMALLOC_CFLAGS='CFLAGS="-std=gnu99 -Wall -pipe -g3 -fvisibility=hidden -O3 -funroll-loops -m32"'
-
-gprof:
- $(MAKE) PROF="-pg"
+ $(MAKE) CFLAGS="-m32" LDFLAGS="-m32"
gcov:
- $(MAKE) PROF="-fprofile-arcs -ftest-coverage"
+ $(MAKE) REDIS_CFLAGS="-fprofile-arcs -ftest-coverage -DCOVERAGE_TEST" REDIS_LDFLAGS="-fprofile-arcs -ftest-coverage"
noopt:
- $(MAKE) OPTIMIZATION=""
-
-32bitgprof:
- $(MAKE) PROF="-pg" ARCH="-arch i386"
+ $(MAKE) OPT="-O0"
src/help.h:
@../utils/generate-command-help.rb > help.h
install: all
mkdir -p $(INSTALL_BIN)
- $(INSTALL) $(PRGNAME) $(INSTALL_BIN)
- $(INSTALL) $(BENCHPRGNAME) $(INSTALL_BIN)
- $(INSTALL) $(CLIPRGNAME) $(INSTALL_BIN)
- $(INSTALL) $(CHECKDUMPPRGNAME) $(INSTALL_BIN)
- $(INSTALL) $(CHECKAOFPRGNAME) $(INSTALL_BIN)
+ $(INSTALL) $(REDIS_SERVER_NAME) $(INSTALL_BIN)
+ $(INSTALL) $(REDIS_BENCHMARK_NAME) $(INSTALL_BIN)
+ $(INSTALL) $(REDIS_CLI_NAME) $(INSTALL_BIN)
+ $(INSTALL) $(REDIS_CHECK_DUMP_NAME) $(INSTALL_BIN)
+ $(INSTALL) $(REDIS_CHECK_AOF_NAME) $(INSTALL_BIN)
projects / redis.git / blobdiff