# Define MOZILLA_SHA1 environment variable when running make to make use of
# a bundled SHA1 routine coming from Mozilla. It is GPL'd and should be fast
# on non-x86 architectures (e.g. PowerPC), while the OpenSSL version (default
# choice) has very fast version optimized for i586.
#
# Define NO_OPENSSL environment variable if you do not have OpenSSL. You will
# miss out git-rev-list --merge-order. This also implies MOZILLA_SHA1.
#
# Define PPC_SHA1 environment variable when running make to make use of
# a bundled SHA1 routine optimized for PowerPC.


# Define COLLISION_CHECK below if you believe that SHA1's
# 1461501637330902918203684832716283019655932542976 hashes do not give you
# sufficient guarantee that no collisions between objects will ever happen.

# DEFINES += -DCOLLISION_CHECK

# Define USE_NSEC below if you want git to care about sub-second file mtimes
# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
# randomly break unless your underlying filesystem supports those sub-second
# times (my ext3 doesn't).

# DEFINES += -DUSE_NSEC

# Define USE_STDEV below if you want git to care about the underlying device
# change being considered an inode change from the update-cache perspective.

# DEFINES += -DUSE_STDEV

GIT_VERSION=0.99.2

COPTS?=-g -O2
CFLAGS+=$(COPTS) -Wall $(DEFINES)

prefix=$(HOME)
bindir=$(prefix)/bin
# dest=

CC?=gcc
AR?=ar
INSTALL?=install
RPMBUILD?=rpmbuild

# sparse is architecture-neutral, which means that we need to tell it
# explicitly what architecture to check for. Fix this up for yours..
SPARSE_FLAGS?=-D__BIG_ENDIAN__ -D__powerpc__



### --- END CONFIGURATION SECTION ---



SCRIPTS=git git-apply-patch-script git-merge-one-file-script git-prune-script \
        git-pull-script git-tag-script git-resolve-script git-whatchanged \
        git-fetch-script git-status-script git-commit-script \
        git-log-script git-shortlog git-cvsimport-script git-diff-script \
        git-reset-script git-add-script git-checkout-script git-clone-script \
        gitk git-cherry git-rebase-script git-relink-script git-repack-script \
        git-format-patch-script git-sh-setup-script git-push-script \
        git-branch-script git-parse-remote git-verify-tag-script \
        git-ls-remote-script git-clone-dumb-http git-rename-script \
        git-request-pull-script

PROG=   git-update-cache git-diff-files git-init-db git-write-tree \
        git-read-tree git-commit-tree git-cat-file git-fsck-cache \
        git-checkout-cache git-diff-tree git-rev-tree git-ls-files \
        git-check-files git-ls-tree git-merge-base git-merge-cache \
        git-unpack-file git-export git-diff-cache git-convert-cache \
        git-http-pull git-ssh-push git-ssh-pull git-rev-list git-mktag \
        git-diff-helper git-tar-tree git-local-pull git-hash-object \
        git-get-tar-commit-id git-apply git-stripspace \
        git-diff-stages git-rev-parse git-patch-id git-pack-objects \
        git-unpack-objects git-verify-pack git-receive-pack git-send-pack \
        git-prune-packed git-fetch-pack git-upload-pack git-clone-pack \
        git-show-index git-daemon git-var git-peek-remote \
        git-update-server-info git-show-rev-cache git-build-rev-cache

LIB_FILE=libgit.a
LIB_H=cache.h object.h blob.h tree.h commit.h tag.h delta.h epoch.h csum-file.h \
        pack.h pkt-line.h refs.h
LIB_OBJS=read-cache.o sha1_file.o usage.o object.o commit.o tree.o blob.o \
         tag.o date.o index.o diff-delta.o patch-delta.o entry.o path.o \
         refs.o csum-file.o pack-check.o pkt-line.o connect.o ident.o

LIB_H += rev-cache.h
LIB_OBJS += rev-cache.o

LIB_H += strbuf.h
LIB_OBJS += strbuf.o

LIB_H += quote.h
LIB_OBJS += quote.o 

LIB_H += diff.h count-delta.h
DIFF_OBJS = diff.o diffcore-rename.o diffcore-pickaxe.o diffcore-pathspec.o \
        diffcore-break.o diffcore-order.o
LIB_OBJS += $(DIFF_OBJS) count-delta.o

LIB_OBJS += gitenv.o
LIB_OBJS += server-info.o

LIBS = $(LIB_FILE)
LIBS += -lz

ifndef NO_OPENSSL
        LIB_OBJS += epoch.o
else
        CFLAGS += '-DNO_OPENSSL'
        MOZILLA_SHA1=1
endif
ifdef MOZILLA_SHA1
  SHA1_HEADER="mozilla-sha1/sha1.h"
  LIB_OBJS += mozilla-sha1/sha1.o
else
ifdef PPC_SHA1
  SHA1_HEADER="ppc/sha1.h"
  LIB_OBJS += ppc/sha1.o ppc/sha1ppc.o
else
  SHA1_HEADER=<openssl/sha.h>
ifeq ($(shell uname -s),Darwin)
  LIBS += -lcrypto -lssl
else
  LIBS += -lcrypto
endif
endif
endif

CFLAGS += '-DSHA1_HEADER=$(SHA1_HEADER)'



### Build rules

all: $(PROG)


git-%: %.c $(LIB_FILE)
        $(CC) $(CFLAGS) -o $@ $(filter %.c,$^) $(LIBS)

git-http-pull: pull.c
git-local-pull: pull.c
git-ssh-pull: rsh.c pull.c
git-ssh-push: rsh.c

git-http-pull: LIBS += -lcurl
git-rev-list: LIBS += -lssl

$(LIB_OBJS): $(LIB_H)
$(DIFF_OBJS): diffcore.h

$(LIB_FILE): $(LIB_OBJS)
        $(AR) rcs $@ $(LIB_OBJS)

doc:
        $(MAKE) -C Documentation all



### Testing rules

test: all
        $(MAKE) -C t/ all

test-date: test-date.c date.o
        $(CC) $(CFLAGS) -o $@ test-date.c date.o

test-delta: test-delta.c diff-delta.o patch-delta.o
        $(CC) $(CFLAGS) -o $@ $^

check:
        for i in *.c; do sparse $(CFLAGS) $(SPARSE_FLAGS) $$i; done



### Installation rules

install: $(PROG) $(SCRIPTS)
        $(INSTALL) -m755 -d $(dest)$(bindir)
        $(INSTALL) $(PROG) $(SCRIPTS) $(dest)$(bin)

install-tools:
        $(MAKE) -C tools install

install-doc:
        $(MAKE) -C Documentation install




### Maintainer's dist rules

git-core.spec: git-core.spec.in Makefile
        sed -e 's/@@VERSION@@/$(GIT_VERSION)/g' < $< > $@

GIT_TARNAME=git-core-$(GIT_VERSION)
dist: git-core.spec git-tar-tree
        ./git-tar-tree HEAD $(GIT_TARNAME) > $(GIT_TARNAME).tar
        @mkdir -p $(GIT_TARNAME)
        @cp git-core.spec $(GIT_TARNAME)
        tar rf $(GIT_TARNAME).tar $(GIT_TARNAME)/git-core.spec
        @rm -rf $(GIT_TARNAME)
        gzip -f -9 $(GIT_TARNAME).tar

rpm: dist
        $(RPMBUILD) -ta git-core-$(GIT_VERSION).tar.gz


backup: clean
        cd .. ; tar czvf dircache.tar.gz dir-cache



### Cleaning rules

clean:
        rm -f *.o mozilla-sha1/*.o ppc/*.o $(PROG) $(LIB_FILE)
        rm -f git-core-*.tar.gz git-core.spec
        $(MAKE) -C tools/ clean
        $(MAKE) -C Documentation/ clean