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git-commit-vandalism/Makefile
Linus Torvalds 66bf85a462 [PATCH] Add "git-update-ref" to update the HEAD (or other) ref 
This is a careful version of the script stuff that currently just
blindly writes HEAD with a new value.

You can use

	git-update-ref HEAD <newhead>

or

	git-update-ref HEAD <newhead> <oldhead>

where the latter version verifies that the old value of HEAD matches
oldhead.

It basically allows a "ref" file to be a symbolic pointer to another ref
file by starting with the four-byte header sequence of "ref:".

More importantly, it allows the update of a ref file to follow these
symbolic pointers, whether they are symlinks or these "regular file
symbolic refs".

NOTE! It follows _real_ symlinks only if they start with "refs/":
otherwise it will just try to read them and update them as a regular file
(ie it will allow the filesystem to follow them, but will overwrite such a
symlink to somewhere else with a regular filename).

In general, using

	git-update-ref HEAD "$head"

should be a _lot_ safer than doing

	echo "$head" > "$GIT_DIR/HEAD"

both from a symlink following standpoint _and_ an error checking
standpoint.  The "refs/" rule for symlinks means that symlinks that point
to "outside" the tree are safe: they'll be followed for reading but not
for writing (so we'll never write through a ref symlink to some other
tree, if you have copied a whole archive by creating a symlink tree).

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-25 16:18:25 -07:00

394 lines
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Makefile
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# 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 NO_CURL if you do not have curl installed. git-http-pull is not
# built, and you cannot use http:// and https:// transports.
#
# Define CURLDIR=/foo/bar if your curl header and library files are in
# /foo/bar/include and /foo/bar/lib directories.
#
# Define NO_STRCASESTR if you don't have strcasestr.
#
# Define PPC_SHA1 environment variable when running make to make use of
# a bundled SHA1 routine optimized for PowerPC.
#
# Define ARM_SHA1 environment variable when running make to make use of
# a bundled SHA1 routine optimized for ARM.
#
# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
#
# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin).
#
# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
# Patrick Mauritz).
#
# Define WITH_OWN_SUBPROCESS_PY if you want to use with python 2.3.
#
# 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 = 0.99.7.GIT
CFLAGS = -g -O2 -Wall
ALL_CFLAGS = $(CFLAGS) $(PLATFORM_DEFINES) $(DEFINES)
prefix = $(HOME)
bindir = $(prefix)/bin
template_dir = $(prefix)/share/git-core/templates/
GIT_PYTHON_DIR = $(prefix)/share/git-core/python
# DESTDIR=
CC = gcc
AR = ar
TAR = tar
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 ---
SCRIPT_SH = \
git-add.sh git-bisect.sh git-branch.sh git-checkout.sh \
git-cherry.sh git-clone.sh git-commit.sh \
git-count-objects.sh git-diff.sh git-fetch.sh \
git-format-patch.sh git-log.sh git-ls-remote.sh \
git-merge-one-file.sh git-octopus.sh git-parse-remote.sh \
git-prune.sh git-pull.sh git-push.sh git-rebase.sh \
git-repack.sh git-request-pull.sh git-reset.sh \
git-resolve.sh git-revert.sh git-sh-setup.sh git-status.sh \
git-tag.sh git-verify-tag.sh git-whatchanged.sh git.sh \
git-applymbox.sh git-applypatch.sh \
git-merge.sh git-merge-stupid.sh git-merge-octopus.sh \
git-merge-resolve.sh git-grep.sh
SCRIPT_PERL = \
git-archimport.perl git-cvsimport.perl git-relink.perl \
git-rename.perl git-shortlog.perl git-fmt-merge-msg.perl
SCRIPT_PYTHON = \
git-merge-recursive.py
# The ones that do not have to link with lcrypto nor lz.
SIMPLE_PROGRAMS = \
git-get-tar-commit-id git-mailinfo git-mailsplit git-stripspace \
git-daemon git-var
# ... and all the rest
PROGRAMS = \
git-apply git-cat-file \
git-checkout-index git-clone-pack git-commit-tree \
git-convert-objects git-diff-files \
git-diff-index git-diff-stages \
git-diff-tree git-fetch-pack git-fsck-objects \
git-hash-object git-init-db \
git-local-fetch git-ls-files git-ls-tree git-merge-base \
git-merge-index git-mktag git-pack-objects git-patch-id \
git-peek-remote git-prune-packed git-read-tree \
git-receive-pack git-rev-list git-rev-parse \
git-send-pack git-show-branch \
git-show-index git-ssh-fetch \
git-ssh-upload git-tar-tree git-unpack-file \
git-unpack-objects git-update-index git-update-server-info \
git-upload-pack git-verify-pack git-write-tree \
git-update-ref \
$(SIMPLE_PROGRAMS)
# Backward compatibility -- to be removed in 0.99.8
PROGRAMS += git-ssh-pull git-ssh-push
PYMODULES = \
gitMergeCommon.py
ifdef WITH_OWN_SUBPROCESS_PY
PYMODULES += compat/subprocess.py
endif
ifdef WITH_SEND_EMAIL
SCRIPT_PERL += git-send-email.perl
endif
LIB_FILE=libgit.a
LIB_H = \
blob.h cache.h commit.h count-delta.h csum-file.h delta.h \
diff.h epoch.h object.h pack.h pkt-line.h quote.h refs.h \
run-command.h strbuf.h tag.h tree.h
DIFF_OBJS = \
diff.o diffcore-break.o diffcore-order.o diffcore-pathspec.o \
diffcore-pickaxe.o diffcore-rename.o
LIB_OBJS = \
blob.o commit.o connect.o count-delta.o csum-file.o \
date.o diff-delta.o entry.o ident.o index.o \
object.o pack-check.o patch-delta.o path.o pkt-line.o \
quote.o read-cache.o refs.o run-command.o \
server-info.o setup.o sha1_file.o sha1_name.o strbuf.o \
tag.o tree.o usage.o $(DIFF_OBJS)
LIBS = $(LIB_FILE)
LIBS += -lz
#
# Platform specific tweaks
#
ifeq ($(shell uname -s),Darwin)
NEEDS_SSL_WITH_CRYPTO = YesPlease
NEEDS_LIBICONV = YesPlease
endif
ifeq ($(shell uname -s),SunOS)
NEEDS_SOCKET = YesPlease
NEEDS_NSL = YesPlease
SHELL_PATH = /bin/bash
NO_STRCASESTR = YesPlease
CURLDIR = /opt/sfw
INSTALL = ginstall
TAR = gtar
PLATFORM_DEFINES += -D__EXTENSIONS__
endif
ifneq (,$(findstring arm,$(shell uname -m)))
ARM_SHA1 = YesPlease
endif
ifndef NO_CURL
ifdef CURLDIR
# This is still problematic -- gcc does not want -R.
CFLAGS += -I$(CURLDIR)/include
CURL_LIBCURL = -L$(CURLDIR)/lib -R$(CURLDIR)/lib -lcurl
else
CURL_LIBCURL = -lcurl
endif
PROGRAMS += git-http-fetch
endif
ifndef SHELL_PATH
SHELL_PATH = /bin/sh
endif
ifndef PERL_PATH
PERL_PATH = /usr/bin/perl
endif
ifndef PYTHON_PATH
PYTHON_PATH = /usr/bin/python
endif
ifndef NO_OPENSSL
LIB_OBJS += epoch.o
OPENSSL_LIBSSL = -lssl
else
DEFINES += '-DNO_OPENSSL'
MOZILLA_SHA1 = 1
OPENSSL_LIBSSL =
endif
ifdef NEEDS_SSL_WITH_CRYPTO
LIB_4_CRYPTO = -lcrypto -lssl
else
LIB_4_CRYPTO = -lcrypto
endif
ifdef NEEDS_LIBICONV
LIB_4_ICONV = -liconv
else
LIB_4_ICONV =
endif
ifdef NEEDS_SOCKET
LIBS += -lsocket
SIMPLE_LIB += -lsocket
endif
ifdef NEEDS_NSL
LIBS += -lnsl
SIMPLE_LIB += -lnsl
endif
ifdef NO_STRCASESTR
DEFINES += -Dstrcasestr=gitstrcasestr
LIB_OBJS += compat/strcasestr.o
endif
ifdef PPC_SHA1
SHA1_HEADER = "ppc/sha1.h"
LIB_OBJS += ppc/sha1.o ppc/sha1ppc.o
else
ifdef ARM_SHA1
SHA1_HEADER = "arm/sha1.h"
LIB_OBJS += arm/sha1.o arm/sha1_arm.o
else
ifdef MOZILLA_SHA1
SHA1_HEADER = "mozilla-sha1/sha1.h"
LIB_OBJS += mozilla-sha1/sha1.o
else
SHA1_HEADER = <openssl/sha.h>
LIBS += $(LIB_4_CRYPTO)
endif
endif
endif
DEFINES += '-DSHA1_HEADER=$(SHA1_HEADER)'
SCRIPTS = $(patsubst %.sh,%,$(SCRIPT_SH)) \
$(patsubst %.perl,%,$(SCRIPT_PERL)) \
$(patsubst %.py,%,$(SCRIPT_PYTHON)) \
gitk
export TAR INSTALL DESTDIR
### Build rules
all: $(PROGRAMS) $(SCRIPTS)
all:
$(MAKE) -C templates
git: git.sh Makefile
rm -f $@+ $@
sed -e '1s|#!.*/sh|#!$(SHELL_PATH)|' \
-e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g' <$@.sh >$@+
chmod +x $@+
mv $@+ $@
$(filter-out git,$(patsubst %.sh,%,$(SCRIPT_SH))) : % : %.sh
rm -f $@
sed -e '1s|#!.*/sh|#!$(SHELL_PATH)|' $@.sh >$@
chmod +x $@
$(patsubst %.perl,%,$(SCRIPT_PERL)) : % : %.perl
rm -f $@
sed -e '1s|#!.*perl|#!$(PERL_PATH)|' $@.perl >$@
chmod +x $@
$(patsubst %.py,%,$(SCRIPT_PYTHON)) : % : %.py
rm -f $@
sed -e '1s|#!.*python|#!$(PYTHON_PATH)|' \
-e 's|@@GIT_PYTHON_PATH@@|$(GIT_PYTHON_DIR)|g' \
$@.py >$@
chmod +x $@
%.o: %.c
$(CC) -o $*.o -c $(ALL_CFLAGS) $<
%.o: %.S
$(CC) -o $*.o -c $(ALL_CFLAGS) $<
git-%: %.o $(LIB_FILE)
$(CC) $(ALL_CFLAGS) -o $@ $(filter %.o,$^) $(LIBS)
git-mailinfo : SIMPLE_LIB += $(LIB_4_ICONV)
$(SIMPLE_PROGRAMS) : $(LIB_FILE)
$(SIMPLE_PROGRAMS) : git-% : %.o
$(CC) $(ALL_CFLAGS) -o $@ $(filter %.o,$^) $(LIB_FILE) $(SIMPLE_LIB)
git-http-fetch: fetch.o
git-local-fetch: fetch.o
git-ssh-fetch: rsh.o fetch.o
git-ssh-upload: rsh.o
git-ssh-pull: rsh.o fetch.o
git-ssh-push: rsh.o
git-http-fetch: LIBS += $(CURL_LIBCURL)
git-rev-list: LIBS += $(OPENSSL_LIBSSL)
init-db.o: init-db.c
$(CC) -c $(ALL_CFLAGS) \
-DDEFAULT_GIT_TEMPLATE_DIR='"$(template_dir)"' $*.c
$(LIB_OBJS): $(LIB_H)
$(patsubst git-%,%.o,$(PROGRAMS)): $(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) $(ALL_CFLAGS) -o $@ test-date.c date.o
test-delta: test-delta.c diff-delta.o patch-delta.o
$(CC) $(ALL_CFLAGS) -o $@ $^
check:
for i in *.c; do sparse $(ALL_CFLAGS) $(SPARSE_FLAGS) $$i; done
### Installation rules
install: $(PROGRAMS) $(SCRIPTS)
$(INSTALL) -d -m755 $(DESTDIR)$(bindir)
$(INSTALL) $(PROGRAMS) $(SCRIPTS) $(DESTDIR)$(bindir)
$(INSTALL) git-revert $(DESTDIR)$(bindir)/git-cherry-pick
$(MAKE) -C templates install
$(INSTALL) -d -m755 $(DESTDIR)$(GIT_PYTHON_DIR)
$(INSTALL) $(PYMODULES) $(DESTDIR)$(GIT_PYTHON_DIR)
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
deb: dist
rm -rf $(GIT_TARNAME)
$(TAR) zxf $(GIT_TARNAME).tar.gz
dpkg-source -b $(GIT_TARNAME)
cd $(GIT_TARNAME) && fakeroot debian/rules binary
### Cleaning rules
clean:
rm -f *.o mozilla-sha1/*.o ppc/*.o compat/*.o $(PROGRAMS) $(LIB_FILE)
rm -f $(filter-out gitk,$(SCRIPTS))
rm -f git-core.spec *.pyc *.pyo
rm -rf $(GIT_TARNAME)
rm -f $(GIT_TARNAME).tar.gz git-core_$(GIT_VERSION)-*.tar.gz
rm -f git-core_$(GIT_VERSION)-*.deb git-core_$(GIT_VERSION)-*.dsc
rm -f git-tk_$(GIT_VERSION)-*.deb
$(MAKE) -C Documentation/ clean
$(MAKE) -C templates clean
$(MAKE) -C t/ clean
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