git-commit-vandalism/Makefile

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# The default target of this Makefile is...
all::
# Define V=1 to have a more verbose compile.
#
# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
# or vsnprintf() return -1 instead of number of characters which would
# have been written to the final string if enough space had been available.
#
# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
# when attempting to read from an fopen'ed directory.
#
# Define NO_OPENSSL environment variable if you do not have OpenSSL.
# This also implies MOZILLA_SHA1.
#
# Define NO_CURL if you do not have libcurl installed. git-http-pull and
# git-http-push are 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_EXPAT if you do not have expat installed. git-http-push is
# not built, and you cannot push using http:// and https:// transports.
#
# Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
#
# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
# d_type in struct dirent (latest Cygwin -- will be fixed soonish).
#
# Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
# do not support the 'size specifiers' introduced by C99, namely ll, hh,
# j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
# some C compilers supported these specifiers prior to C99 as an extension.
#
# Define NO_STRCASESTR if you don't have strcasestr.
#
# Define NO_MEMMEM if you don't have memmem.
#
# Define NO_STRLCPY if you don't have strlcpy.
#
# Define NO_STRTOUMAX if you don't have strtoumax in the C library.
# If your compiler also does not support long long or does not have
# strtoull, define NO_STRTOULL.
#
# Define NO_SETENV if you don't have setenv in the C library.
#
# Define NO_UNSETENV if you don't have unsetenv in the C library.
#
# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
#
# Define NO_SYS_SELECT_H if you don't have sys/select.h.
#
# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
# Enable it on Windows. By default, symrefs are still used.
#
# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
# tests. These tests take up a significant amount of the total test time
# but are not needed unless you plan to talk to SVN repos.
#
# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
# installed in /sw, but don't want GIT to link against any libraries
# installed there. If defined you may specify your own (or Fink's)
# include directories and library directories by defining CFLAGS
# and LDFLAGS appropriately.
#
# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
# have DarwinPorts installed in /opt/local, but don't want GIT to
# link against any libraries installed there. If defined you may
# specify your own (or DarwinPort's) include directories and
# library directories by defining CFLAGS and LDFLAGS appropriately.
#
# 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 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 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 NO_MMAP if you want to avoid mmap.
#
# Define NO_PREAD if you have a problem with pread() system call (e.g.
# cygwin.dll before v1.5.22).
#
Avoid accessing a slow working copy during diffcore operations. The Cygwin folks have done a fine job at creating a POSIX layer on Windows That Just Works(tm). However it comes with a penalty; accessing files in the working tree by way of stat/open/mmap can be slower for diffcore than inflating the data from a blob which is stored in a packfile. This performance problem is especially an issue in merge-recursive when dealing with nearly 7000 added files, as we are loading each file's content from the working directory to perform rename detection. I have literally seen (and sadly watched) paint dry in less time than it takes for merge-recursive to finish such a merge. On the other hand this very same merge runs very fast on Solaris. If Git is compiled with NO_FAST_WORKING_DIRECTORY set then we will avoid looking at the working directory when the blob in question is available within a packfile and the caller doesn't need the data unpacked into a temporary file. We don't use loose objects as they have the same open/mmap/close costs as the working directory file access, but have the additional CPU overhead of needing to inflate the content before use. So it is still faster to use the working tree file over the loose object. If the caller needs the file data unpacked into a temporary file its likely because they are going to call an external diff program, passing the file as a parameter. In this case reusing the working tree file will be faster as we don't need to inflate the data and write it out to a temporary file. The NO_FAST_WORKING_DIRECTORY feature is enabled by default on Cygwin, as that is the platform which currently appears to benefit the most from this option. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-14 12:15:57 +01:00
# Define NO_FAST_WORKING_DIRECTORY if accessing objects in pack files is
# generally faster on your platform than accessing the working directory.
#
# Define NO_TRUSTABLE_FILEMODE if your filesystem may claim to support
# the executable mode bit, but doesn't really do so.
#
# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
#
# Define NO_SOCKADDR_STORAGE if your platform does not have struct
# sockaddr_storage.
#
# Define NO_ICONV if your libc does not properly support iconv.
#
# Define OLD_ICONV if your library has an old iconv(), where the second
# (input buffer pointer) parameter is declared with type (const char **).
#
# Define NO_DEFLATE_BOUND if your zlib does not have deflateBound.
#
# Define NO_R_TO_GCC_LINKER if your gcc does not like "-R/path/lib"
# that tells runtime paths to dynamic libraries;
# "-Wl,-rpath=/path/lib" is used instead.
#
# 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).
#
# Define USE_STDEV below if you want git to care about the underlying device
# change being considered an inode change from the update-index perspective.
#
# Define ASCIIDOC8 if you want to format documentation with AsciiDoc 8
#
# Define DOCBOOK_XSL_172 if you want to format man pages with DocBook XSL v1.72.
#
# Define NO_PERL_MAKEMAKER if you cannot use Makefiles generated by perl's
# MakeMaker (e.g. using ActiveState under Cygwin).
#
# Define NO_TCLTK if you do not want Tcl/Tk GUI.
#
# The TCL_PATH variable governs the location of the Tcl interpreter
# used to optimize git-gui for your system. Only used if NO_TCLTK
# is not set. Defaults to the bare 'tclsh'.
#
# The TCLTK_PATH variable governs the location of the Tcl/Tk interpreter.
# If not set it defaults to the bare 'wish'. If it is set to the empty
# string then NO_TCLTK will be forced (this is used by configure script).
#
# Define THREADED_DELTA_SEARCH if you have pthreads and wish to exploit
# parallel delta searching when packing objects.
#
# Define INTERNAL_QSORT to use Git's implementation of qsort(), which
# is a simplified version of the merge sort used in glibc. This is
# recommended if Git triggers O(n^2) behavior in your platform's qsort().
#
# Define NO_EXTERNAL_GREP if you don't want "git grep" to ever call
# your external grep (e.g., if your system lacks grep, if its grep is
# broken, or spawning external process is slower than built-in grep git has).
GIT-VERSION-FILE: .FORCE-GIT-VERSION-FILE
@$(SHELL_PATH) ./GIT-VERSION-GEN
-include GIT-VERSION-FILE
uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')
uname_M := $(shell sh -c 'uname -m 2>/dev/null || echo not')
uname_O := $(shell sh -c 'uname -o 2>/dev/null || echo not')
uname_R := $(shell sh -c 'uname -r 2>/dev/null || echo not')
uname_P := $(shell sh -c 'uname -p 2>/dev/null || echo not')
# CFLAGS and LDFLAGS are for the users to override from the command line.
CFLAGS = -g -O2 -Wall
LDFLAGS =
ALL_CFLAGS = $(CFLAGS)
ALL_LDFLAGS = $(LDFLAGS)
STRIP ?= strip
# Among the variables below, these:
# gitexecdir
# template_dir
# htmldir
# ETC_GITCONFIG (but not sysconfdir)
# can be specified as a relative path ../some/where/else (which must begin
# with ../); this is interpreted as relative to $(bindir) and "git" at
# runtime figures out where they are based on the path to the executable.
# This can help installing the suite in a relocatable way.
prefix = $(HOME)
bindir = $(prefix)/bin
mandir = $(prefix)/share/man
infodir = $(prefix)/share/info
gitexecdir = $(prefix)/libexec/git-core
sharedir = $(prefix)/share
template_dir = $(sharedir)/git-core/templates
htmldir=$(sharedir)/doc/git-doc
ifeq ($(prefix),/usr)
sysconfdir = /etc
else
sysconfdir = $(prefix)/etc
endif
lib = lib
ETC_GITCONFIG = $(sysconfdir)/gitconfig
# DESTDIR=
# default configuration for gitweb
GITWEB_CONFIG = gitweb_config.perl
GITWEB_CONFIG_SYSTEM = /etc/gitweb.conf
GITWEB_HOME_LINK_STR = projects
GITWEB_SITENAME =
GITWEB_PROJECTROOT = /pub/git
GITWEB_PROJECT_MAXDEPTH = 2007
GITWEB_EXPORT_OK =
GITWEB_STRICT_EXPORT =
GITWEB_BASE_URL =
GITWEB_LIST =
GITWEB_HOMETEXT = indextext.html
GITWEB_CSS = gitweb.css
GITWEB_LOGO = git-logo.png
GITWEB_FAVICON = git-favicon.png
GITWEB_SITE_HEADER =
GITWEB_SITE_FOOTER =
export prefix bindir sharedir htmldir sysconfdir
CC = gcc
AR = ar
RM = rm -f
TAR = tar
FIND = find
INSTALL = install
RPMBUILD = rpmbuild
TCL_PATH = tclsh
TCLTK_PATH = wish
export TCL_PATH TCLTK_PATH
# 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 ---
# Those must not be GNU-specific; they are shared with perl/ which may
# be built by a different compiler. (Note that this is an artifact now
# but it still might be nice to keep that distinction.)
BASIC_CFLAGS =
BASIC_LDFLAGS =
SCRIPT_SH += git-am.sh
SCRIPT_SH += git-bisect.sh
SCRIPT_SH += git-filter-branch.sh
SCRIPT_SH += git-lost-found.sh
SCRIPT_SH += git-merge-octopus.sh
SCRIPT_SH += git-merge-one-file.sh
SCRIPT_SH += git-merge-resolve.sh
SCRIPT_SH += git-mergetool.sh
SCRIPT_SH += git-parse-remote.sh
SCRIPT_SH += git-pull.sh
SCRIPT_SH += git-quiltimport.sh
SCRIPT_SH += git-rebase--interactive.sh
SCRIPT_SH += git-rebase.sh
SCRIPT_SH += git-repack.sh
SCRIPT_SH += git-request-pull.sh
SCRIPT_SH += git-sh-setup.sh
SCRIPT_SH += git-stash.sh
SCRIPT_SH += git-submodule.sh
SCRIPT_SH += git-web--browse.sh
SCRIPT_PERL += git-add--interactive.perl
SCRIPT_PERL += git-archimport.perl
SCRIPT_PERL += git-cvsexportcommit.perl
SCRIPT_PERL += git-cvsimport.perl
SCRIPT_PERL += git-cvsserver.perl
SCRIPT_PERL += git-relink.perl
SCRIPT_PERL += git-send-email.perl
SCRIPT_PERL += git-svn.perl
SCRIPTS = $(patsubst %.sh,%,$(SCRIPT_SH)) \
$(patsubst %.perl,%,$(SCRIPT_PERL)) \
git-instaweb
# Empty...
EXTRA_PROGRAMS =
# ... and all the rest that could be moved out of bindir to gitexecdir
PROGRAMS += $(EXTRA_PROGRAMS)
PROGRAMS += git-fast-import$X
PROGRAMS += git-fetch-pack$X
PROGRAMS += git-hash-object$X
PROGRAMS += git-index-pack$X
PROGRAMS += git-merge-index$X
PROGRAMS += git-merge-tree$X
PROGRAMS += git-mktag$X
PROGRAMS += git-mktree$X
PROGRAMS += git-pack-redundant$X
PROGRAMS += git-patch-id$X
PROGRAMS += git-receive-pack$X
PROGRAMS += git-send-pack$X
PROGRAMS += git-show-index$X
PROGRAMS += git-unpack-file$X
PROGRAMS += git-update-server-info$X
PROGRAMS += git-upload-pack$X
PROGRAMS += git-var$X
# List built-in command $C whose implementation cmd_$C() is not in
# builtin-$C.o but is linked in as part of some other command.
BUILT_INS += $(patsubst builtin-%.o,git-%$X,$(BUILTIN_OBJS))
BUILT_INS += git-cherry-pick$X
BUILT_INS += git-cherry$X
BUILT_INS += git-format-patch$X
BUILT_INS += git-fsck-objects$X
BUILT_INS += git-get-tar-commit-id$X
BUILT_INS += git-init$X
BUILT_INS += git-merge-subtree$X
BUILT_INS += git-peek-remote$X
BUILT_INS += git-repo-config$X
BUILT_INS += git-show$X
BUILT_INS += git-status$X
BUILT_INS += git-whatchanged$X
# what 'all' will build and 'install' will install, in gitexecdir
ALL_PROGRAMS = $(PROGRAMS) $(SCRIPTS)
# what 'all' will build but not install in gitexecdir
OTHER_PROGRAMS = git$X gitweb/gitweb.cgi
# Set paths to tools early so that they can be used for version tests.
ifndef SHELL_PATH
SHELL_PATH = /bin/sh
endif
ifndef PERL_PATH
PERL_PATH = /usr/bin/perl
endif
export PERL_PATH
LIB_FILE=libgit.a
Use a *real* built-in diff generator This uses a simplified libxdiff setup to generate unified diffs _without_ doing fork/execve of GNU "diff". This has several huge advantages, for example: Before: [torvalds@g5 linux]$ time git diff v2.6.16.. > /dev/null real 0m24.818s user 0m13.332s sys 0m8.664s After: [torvalds@g5 linux]$ time git diff v2.6.16.. > /dev/null real 0m4.563s user 0m2.944s sys 0m1.580s and the fact that this should be a lot more portable (ie we can ignore all the issues with doing fork/execve under Windows). Perhaps even more importantly, this allows us to do diffs without actually ever writing out the git file contents to a temporary file (and without any of the shell quoting issues on filenames etc etc). NOTE! THIS PATCH DOES NOT DO THAT OPTIMIZATION YET! I was lazy, and the current "diff-core" code actually will always write the temp-files, because it used to be something that you simply had to do. So this current one actually writes a temp-file like before, and then reads it into memory again just to do the diff. Stupid. But if this basic infrastructure is accepted, we can start switching over diff-core to not write temp-files, which should speed things up even further, especially when doing big tree-to-tree diffs. Now, in the interest of full disclosure, I should also point out a few downsides: - the libxdiff algorithm is different, and I bet GNU diff has gotten a lot more testing. And the thing is, generating a diff is not an exact science - you can get two different diffs (and you will), and they can both be perfectly valid. So it's not possible to "validate" the libxdiff output by just comparing it against GNU diff. - GNU diff does some nice eye-candy, like trying to figure out what the last function was, and adding that information to the "@@ .." line. libxdiff doesn't do that. - The libxdiff thing has some known deficiencies. In particular, it gets the "\No newline at end of file" case wrong. So this is currently for the experimental branch only. I hope Davide will help fix it. That said, I think the huge performance advantage, and the fact that it integrates better is definitely worth it. But it should go into a development branch at least due to the missing newline issue. Technical note: this is based on libxdiff-0.17, but I did some surgery to get rid of the extraneous fat - stuff that git doesn't need, and seriously cutting down on mmfile_t, which had much more capabilities than the diff algorithm either needed or used. In this version, "mmfile_t" is just a trivial <pointer,length> tuple. That said, I tried to keep the differences to simple removals, so that you can do a diff between this and the libxdiff origin, and you'll basically see just things getting deleted. Even the mmfile_t simplifications are left in a state where the diffs should be readable. Apologies to Davide, whom I'd love to get feedback on this all from (I wrote my own "fill_mmfile()" for the new simpler mmfile_t format: the old complex format had a helper function for that, but I did my surgery with the goal in mind that eventually we _should_ just do mmfile_t mf; buf = read_sha1_file(sha1, type, &size); mf->ptr = buf; mf->size = size; .. use "mf" directly .. which was really a nightmare with the old "helpful" mmfile_t, and really is that easy with the new cut-down interfaces). [ Btw, as any hawk-eye can see from the diff, this was actually generated with itself, so it is "self-hosting". That's about all the testing it has gotten, along with the above kernel diff, which eye-balls correctly, but shows the newline issue when you double-check it with "git-apply" ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-03-25 05:13:22 +01:00
XDIFF_LIB=xdiff/lib.a
LIB_H += archive.h
LIB_H += attr.h
LIB_H += blob.h
LIB_H += builtin.h
LIB_H += cache.h
LIB_H += cache-tree.h
LIB_H += commit.h
LIB_H += compat/mingw.h
LIB_H += csum-file.h
LIB_H += decorate.h
LIB_H += delta.h
LIB_H += diffcore.h
LIB_H += diff.h
LIB_H += dir.h
LIB_H += fsck.h
LIB_H += git-compat-util.h
LIB_H += graph.h
LIB_H += grep.h
LIB_H += hash.h
LIB_H += list-objects.h
LIB_H += ll-merge.h
LIB_H += log-tree.h
LIB_H += mailmap.h
LIB_H += merge-recursive.h
LIB_H += object.h
LIB_H += pack.h
LIB_H += pack-refs.h
LIB_H += pack-revindex.h
LIB_H += parse-options.h
LIB_H += patch-ids.h
LIB_H += string-list.h
LIB_H += pkt-line.h
LIB_H += progress.h
LIB_H += quote.h
LIB_H += reflog-walk.h
LIB_H += refs.h
LIB_H += remote.h
LIB_H += rerere.h
LIB_H += revision.h
LIB_H += run-command.h
sha1-lookup: more memory efficient search in sorted list of SHA-1 Currently, when looking for a packed object from the pack idx, a simple binary search is used. A conventional binary search loop looks like this: unsigned lo, hi; do { unsigned mi = (lo + hi) / 2; int cmp = "entry pointed at by mi" minus "target"; if (!cmp) return mi; "mi is the wanted one" if (cmp > 0) hi = mi; "mi is larger than target" else lo = mi+1; "mi is smaller than target" } while (lo < hi); "did not find what we wanted" The invariants are: - When entering the loop, 'lo' points at a slot that is never above the target (it could be at the target), 'hi' points at a slot that is guaranteed to be above the target (it can never be at the target). - We find a point 'mi' between 'lo' and 'hi' ('mi' could be the same as 'lo', but never can be as high as 'hi'), and check if 'mi' hits the target. There are three cases: - if it is a hit, we have found what we are looking for; - if it is strictly higher than the target, we set it to 'hi', and repeat the search. - if it is strictly lower than the target, we update 'lo' to one slot after it, because we allow 'lo' to be at the target and 'mi' is known to be below the target. If the loop exits, there is no matching entry. When choosing 'mi', we do not have to take the "middle" but anywhere in between 'lo' and 'hi', as long as lo <= mi < hi is satisfied. When we somehow know that the distance between the target and 'lo' is much shorter than the target and 'hi', we could pick 'mi' that is much closer to 'lo' than (hi+lo)/2, which a conventional binary search would pick. This patch takes advantage of the fact that the SHA-1 is a good hash function, and as long as there are enough entries in the table, we can expect uniform distribution. An entry that begins with for example "deadbeef..." is much likely to appear much later than in the midway of a reasonably populated table. In fact, it can be expected to be near 87% (222/256) from the top of the table. This is a work-in-progress and has switches to allow easier experiments and debugging. Exporting GIT_USE_LOOKUP environment variable enables this code. On my admittedly memory starved machine, with a partial KDE repository (3.0G pack with 95M idx): $ GIT_USE_LOOKUP=t git log -800 --stat HEAD >/dev/null 3.93user 0.16system 0:04.09elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+55588minor)pagefaults 0swaps Without the patch, the numbers are: $ git log -800 --stat HEAD >/dev/null 4.00user 0.15system 0:04.17elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+60258minor)pagefaults 0swaps In the same repository: $ GIT_USE_LOOKUP=t git log -2000 HEAD >/dev/null 0.12user 0.00system 0:00.12elapsed 97%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+4241minor)pagefaults 0swaps Without the patch, the numbers are: $ git log -2000 HEAD >/dev/null 0.05user 0.01system 0:00.07elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+8506minor)pagefaults 0swaps There isn't much time difference, but the number of minor faults seems to show that we are touching much smaller number of pages, which is expected. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-29 11:05:47 +01:00
LIB_H += sha1-lookup.h
LIB_H += sideband.h
LIB_H += strbuf.h
LIB_H += tag.h
LIB_H += transport.h
LIB_H += tree.h
LIB_H += tree-walk.h
LIB_H += unpack-trees.h
LIB_H += utf8.h
LIB_H += wt-status.h
LIB_OBJS += abspath.o
LIB_OBJS += alias.o
LIB_OBJS += alloc.o
LIB_OBJS += archive.o
LIB_OBJS += archive-tar.o
LIB_OBJS += archive-zip.o
LIB_OBJS += attr.o
LIB_OBJS += base85.o
LIB_OBJS += blob.o
LIB_OBJS += branch.o
LIB_OBJS += bundle.o
LIB_OBJS += cache-tree.o
LIB_OBJS += color.o
LIB_OBJS += combine-diff.o
LIB_OBJS += commit.o
LIB_OBJS += config.o
LIB_OBJS += connect.o
LIB_OBJS += convert.o
LIB_OBJS += copy.o
LIB_OBJS += csum-file.o
LIB_OBJS += ctype.o
LIB_OBJS += date.o
LIB_OBJS += decorate.o
LIB_OBJS += diffcore-break.o
LIB_OBJS += diffcore-delta.o
LIB_OBJS += diffcore-order.o
LIB_OBJS += diffcore-pickaxe.o
LIB_OBJS += diffcore-rename.o
LIB_OBJS += diff-delta.o
LIB_OBJS += diff-no-index.o
LIB_OBJS += diff-lib.o
LIB_OBJS += diff.o
LIB_OBJS += dir.o
LIB_OBJS += editor.o
LIB_OBJS += entry.o
LIB_OBJS += environment.o
LIB_OBJS += exec_cmd.o
LIB_OBJS += fsck.o
LIB_OBJS += graph.o
LIB_OBJS += grep.o
LIB_OBJS += hash.o
LIB_OBJS += help.o
LIB_OBJS += ident.o
LIB_OBJS += interpolate.o
LIB_OBJS += list-objects.o
LIB_OBJS += ll-merge.o
LIB_OBJS += lockfile.o
LIB_OBJS += log-tree.o
LIB_OBJS += mailmap.o
LIB_OBJS += match-trees.o
LIB_OBJS += merge-file.o
LIB_OBJS += name-hash.o
LIB_OBJS += object.o
LIB_OBJS += pack-check.o
LIB_OBJS += pack-refs.o
LIB_OBJS += pack-revindex.o
LIB_OBJS += pack-write.o
LIB_OBJS += pager.o
LIB_OBJS += parse-options.o
LIB_OBJS += patch-delta.o
LIB_OBJS += patch-ids.o
LIB_OBJS += string-list.o
LIB_OBJS += path.o
LIB_OBJS += pkt-line.o
LIB_OBJS += pretty.o
LIB_OBJS += progress.o
LIB_OBJS += quote.o
LIB_OBJS += reachable.o
LIB_OBJS += read-cache.o
LIB_OBJS += reflog-walk.o
LIB_OBJS += refs.o
LIB_OBJS += remote.o
LIB_OBJS += rerere.o
LIB_OBJS += revision.o
LIB_OBJS += run-command.o
LIB_OBJS += server-info.o
LIB_OBJS += setup.o
LIB_OBJS += sha1_file.o
sha1-lookup: more memory efficient search in sorted list of SHA-1 Currently, when looking for a packed object from the pack idx, a simple binary search is used. A conventional binary search loop looks like this: unsigned lo, hi; do { unsigned mi = (lo + hi) / 2; int cmp = "entry pointed at by mi" minus "target"; if (!cmp) return mi; "mi is the wanted one" if (cmp > 0) hi = mi; "mi is larger than target" else lo = mi+1; "mi is smaller than target" } while (lo < hi); "did not find what we wanted" The invariants are: - When entering the loop, 'lo' points at a slot that is never above the target (it could be at the target), 'hi' points at a slot that is guaranteed to be above the target (it can never be at the target). - We find a point 'mi' between 'lo' and 'hi' ('mi' could be the same as 'lo', but never can be as high as 'hi'), and check if 'mi' hits the target. There are three cases: - if it is a hit, we have found what we are looking for; - if it is strictly higher than the target, we set it to 'hi', and repeat the search. - if it is strictly lower than the target, we update 'lo' to one slot after it, because we allow 'lo' to be at the target and 'mi' is known to be below the target. If the loop exits, there is no matching entry. When choosing 'mi', we do not have to take the "middle" but anywhere in between 'lo' and 'hi', as long as lo <= mi < hi is satisfied. When we somehow know that the distance between the target and 'lo' is much shorter than the target and 'hi', we could pick 'mi' that is much closer to 'lo' than (hi+lo)/2, which a conventional binary search would pick. This patch takes advantage of the fact that the SHA-1 is a good hash function, and as long as there are enough entries in the table, we can expect uniform distribution. An entry that begins with for example "deadbeef..." is much likely to appear much later than in the midway of a reasonably populated table. In fact, it can be expected to be near 87% (222/256) from the top of the table. This is a work-in-progress and has switches to allow easier experiments and debugging. Exporting GIT_USE_LOOKUP environment variable enables this code. On my admittedly memory starved machine, with a partial KDE repository (3.0G pack with 95M idx): $ GIT_USE_LOOKUP=t git log -800 --stat HEAD >/dev/null 3.93user 0.16system 0:04.09elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+55588minor)pagefaults 0swaps Without the patch, the numbers are: $ git log -800 --stat HEAD >/dev/null 4.00user 0.15system 0:04.17elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+60258minor)pagefaults 0swaps In the same repository: $ GIT_USE_LOOKUP=t git log -2000 HEAD >/dev/null 0.12user 0.00system 0:00.12elapsed 97%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+4241minor)pagefaults 0swaps Without the patch, the numbers are: $ git log -2000 HEAD >/dev/null 0.05user 0.01system 0:00.07elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+8506minor)pagefaults 0swaps There isn't much time difference, but the number of minor faults seems to show that we are touching much smaller number of pages, which is expected. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-29 11:05:47 +01:00
LIB_OBJS += sha1-lookup.o
LIB_OBJS += sha1_name.o
LIB_OBJS += shallow.o
LIB_OBJS += sideband.o
LIB_OBJS += strbuf.o
LIB_OBJS += symlinks.o
LIB_OBJS += tag.o
LIB_OBJS += trace.o
LIB_OBJS += transport.o
LIB_OBJS += tree-diff.o
LIB_OBJS += tree.o
LIB_OBJS += tree-walk.o
LIB_OBJS += unpack-trees.o
LIB_OBJS += usage.o
LIB_OBJS += utf8.o
LIB_OBJS += walker.o
Shrink the git binary a bit by avoiding unnecessary inline functions So I was looking at the disgusting size of the git binary, and even with the debugging removed, and using -Os instead of -O2, the size of the text section was pretty high. In this day and age I guess almost a megabyte of text isn't really all that surprising, but it still doesn't exactly make me think "lean and mean". With -Os, a surprising amount of text space is wasted on inline functions that end up just being replicated multiple times, and where performance really isn't a valid reason to inline them. In particular, the trivial wrapper functions like "xmalloc()" are used _everywhere_, and making them inline just duplicates the text (and the string we use to 'die()' on failure) unnecessarily. So this just moves them into a "wrapper.c" file, getting rid of a tiny bit of unnecessary bloat. The following numbers are both with "CFLAGS=-Os": Before: [torvalds@woody git]$ size git text data bss dec hex filename 700460 15160 292184 1007804 f60bc git After: [torvalds@woody git]$ size git text data bss dec hex filename 670540 15160 292184 977884 eebdc git so it saves almost 30k of text-space (it actually saves more than that with the default -O2, but I don't think that's necessarily a very relevant number from a "try to shrink git" standpoint). It might conceivably have a performance impact, but none of this should be _that_ performance critical. The real cost is not generally in the wrapper anyway, but in the code it wraps (ie the cost of "xread()" is all in the read itself, not in the trivial wrapping of it). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-06-22 21:19:25 +02:00
LIB_OBJS += wrapper.o
LIB_OBJS += write_or_die.o
LIB_OBJS += ws.o
LIB_OBJS += wt-status.o
LIB_OBJS += xdiff-interface.o
BUILTIN_OBJS += builtin-add.o
BUILTIN_OBJS += builtin-annotate.o
BUILTIN_OBJS += builtin-apply.o
BUILTIN_OBJS += builtin-archive.o
BUILTIN_OBJS += builtin-blame.o
BUILTIN_OBJS += builtin-branch.o
BUILTIN_OBJS += builtin-bundle.o
BUILTIN_OBJS += builtin-cat-file.o
BUILTIN_OBJS += builtin-check-attr.o
BUILTIN_OBJS += builtin-check-ref-format.o
BUILTIN_OBJS += builtin-checkout-index.o
BUILTIN_OBJS += builtin-checkout.o
BUILTIN_OBJS += builtin-clean.o
BUILTIN_OBJS += builtin-clone.o
BUILTIN_OBJS += builtin-commit-tree.o
BUILTIN_OBJS += builtin-commit.o
BUILTIN_OBJS += builtin-config.o
BUILTIN_OBJS += builtin-count-objects.o
BUILTIN_OBJS += builtin-describe.o
BUILTIN_OBJS += builtin-diff-files.o
BUILTIN_OBJS += builtin-diff-index.o
BUILTIN_OBJS += builtin-diff-tree.o
BUILTIN_OBJS += builtin-diff.o
BUILTIN_OBJS += builtin-fast-export.o
BUILTIN_OBJS += builtin-fetch--tool.o
BUILTIN_OBJS += builtin-fetch-pack.o
BUILTIN_OBJS += builtin-fetch.o
BUILTIN_OBJS += builtin-fmt-merge-msg.o
BUILTIN_OBJS += builtin-for-each-ref.o
BUILTIN_OBJS += builtin-fsck.o
BUILTIN_OBJS += builtin-gc.o
BUILTIN_OBJS += builtin-grep.o
BUILTIN_OBJS += builtin-init-db.o
BUILTIN_OBJS += builtin-log.o
BUILTIN_OBJS += builtin-ls-files.o
BUILTIN_OBJS += builtin-ls-remote.o
BUILTIN_OBJS += builtin-ls-tree.o
BUILTIN_OBJS += builtin-mailinfo.o
BUILTIN_OBJS += builtin-mailsplit.o
BUILTIN_OBJS += builtin-merge.o
BUILTIN_OBJS += builtin-merge-base.o
BUILTIN_OBJS += builtin-merge-file.o
BUILTIN_OBJS += builtin-merge-ours.o
BUILTIN_OBJS += builtin-merge-recursive.o
BUILTIN_OBJS += builtin-mv.o
BUILTIN_OBJS += builtin-name-rev.o
BUILTIN_OBJS += builtin-pack-objects.o
BUILTIN_OBJS += builtin-pack-refs.o
BUILTIN_OBJS += builtin-prune-packed.o
BUILTIN_OBJS += builtin-prune.o
BUILTIN_OBJS += builtin-push.o
BUILTIN_OBJS += builtin-read-tree.o
BUILTIN_OBJS += builtin-reflog.o
BUILTIN_OBJS += builtin-remote.o
BUILTIN_OBJS += builtin-rerere.o
BUILTIN_OBJS += builtin-reset.o
BUILTIN_OBJS += builtin-rev-list.o
BUILTIN_OBJS += builtin-rev-parse.o
BUILTIN_OBJS += builtin-revert.o
BUILTIN_OBJS += builtin-rm.o
BUILTIN_OBJS += builtin-send-pack.o
BUILTIN_OBJS += builtin-shortlog.o
BUILTIN_OBJS += builtin-show-branch.o
BUILTIN_OBJS += builtin-show-ref.o
BUILTIN_OBJS += builtin-stripspace.o
BUILTIN_OBJS += builtin-symbolic-ref.o
BUILTIN_OBJS += builtin-tag.o
BUILTIN_OBJS += builtin-tar-tree.o
BUILTIN_OBJS += builtin-unpack-objects.o
BUILTIN_OBJS += builtin-update-index.o
BUILTIN_OBJS += builtin-update-ref.o
BUILTIN_OBJS += builtin-upload-archive.o
BUILTIN_OBJS += builtin-verify-pack.o
BUILTIN_OBJS += builtin-verify-tag.o
BUILTIN_OBJS += builtin-write-tree.o
GITLIBS = $(LIB_FILE) $(XDIFF_LIB)
EXTLIBS =
#
# Platform specific tweaks
#
# We choose to avoid "if .. else if .. else .. endif endif"
# because maintaining the nesting to match is a pain. If
# we had "elif" things would have been much nicer...
ifeq ($(uname_S),Linux)
NO_STRLCPY = YesPlease
endif
ifeq ($(uname_S),GNU/kFreeBSD)
NO_STRLCPY = YesPlease
endif
ifeq ($(uname_S),UnixWare)
CC = cc
NEEDS_SOCKET = YesPlease
NEEDS_NSL = YesPlease
NEEDS_SSL_WITH_CRYPTO = YesPlease
NEEDS_LIBICONV = YesPlease
SHELL_PATH = /usr/local/bin/bash
NO_IPV6 = YesPlease
NO_HSTRERROR = YesPlease
BASIC_CFLAGS += -Kthread
BASIC_CFLAGS += -I/usr/local/include
BASIC_LDFLAGS += -L/usr/local/lib
INSTALL = ginstall
TAR = gtar
NO_STRCASESTR = YesPlease
NO_MEMMEM = YesPlease
endif
ifeq ($(uname_S),SCO_SV)
ifeq ($(uname_R),3.2)
CFLAGS = -O2
endif
ifeq ($(uname_R),5)
CC = cc
BASIC_CFLAGS += -Kthread
endif
NEEDS_SOCKET = YesPlease
NEEDS_NSL = YesPlease
NEEDS_SSL_WITH_CRYPTO = YesPlease
NEEDS_LIBICONV = YesPlease
SHELL_PATH = /usr/bin/bash
NO_IPV6 = YesPlease
NO_HSTRERROR = YesPlease
BASIC_CFLAGS += -I/usr/local/include
BASIC_LDFLAGS += -L/usr/local/lib
NO_STRCASESTR = YesPlease
NO_MEMMEM = YesPlease
INSTALL = ginstall
TAR = gtar
endif
ifeq ($(uname_S),Darwin)
NEEDS_SSL_WITH_CRYPTO = YesPlease
NEEDS_LIBICONV = YesPlease
ifneq ($(shell expr "$(uname_R)" : '9\.'),2)
OLD_ICONV = UnfortunatelyYes
endif
NO_STRLCPY = YesPlease
NO_MEMMEM = YesPlease
COMPAT_CFLAGS += -Icompat/regex
COMPAT_OBJS += compat/regex/regex.o
endif
ifeq ($(uname_S),SunOS)
NEEDS_SOCKET = YesPlease
NEEDS_NSL = YesPlease
SHELL_PATH = /bin/bash
NO_STRCASESTR = YesPlease
NO_MEMMEM = YesPlease
NO_HSTRERROR = YesPlease
NO_MKDTEMP = YesPlease
OLD_ICONV = UnfortunatelyYes
ifeq ($(uname_R),5.8)
NO_UNSETENV = YesPlease
NO_SETENV = YesPlease
NO_C99_FORMAT = YesPlease
NO_STRTOUMAX = YesPlease
endif
ifeq ($(uname_R),5.9)
NO_UNSETENV = YesPlease
NO_SETENV = YesPlease
NO_C99_FORMAT = YesPlease
NO_STRTOUMAX = YesPlease
endif
INSTALL = ginstall
TAR = gtar
BASIC_CFLAGS += -D__EXTENSIONS__
endif
ifeq ($(uname_O),Cygwin)
NO_D_TYPE_IN_DIRENT = YesPlease
NO_D_INO_IN_DIRENT = YesPlease
2005-09-29 01:37:37 +02:00
NO_STRCASESTR = YesPlease
NO_MEMMEM = YesPlease
NO_SYMLINK_HEAD = YesPlease
2005-09-29 01:37:37 +02:00
NEEDS_LIBICONV = YesPlease
Avoid accessing a slow working copy during diffcore operations. The Cygwin folks have done a fine job at creating a POSIX layer on Windows That Just Works(tm). However it comes with a penalty; accessing files in the working tree by way of stat/open/mmap can be slower for diffcore than inflating the data from a blob which is stored in a packfile. This performance problem is especially an issue in merge-recursive when dealing with nearly 7000 added files, as we are loading each file's content from the working directory to perform rename detection. I have literally seen (and sadly watched) paint dry in less time than it takes for merge-recursive to finish such a merge. On the other hand this very same merge runs very fast on Solaris. If Git is compiled with NO_FAST_WORKING_DIRECTORY set then we will avoid looking at the working directory when the blob in question is available within a packfile and the caller doesn't need the data unpacked into a temporary file. We don't use loose objects as they have the same open/mmap/close costs as the working directory file access, but have the additional CPU overhead of needing to inflate the content before use. So it is still faster to use the working tree file over the loose object. If the caller needs the file data unpacked into a temporary file its likely because they are going to call an external diff program, passing the file as a parameter. In this case reusing the working tree file will be faster as we don't need to inflate the data and write it out to a temporary file. The NO_FAST_WORKING_DIRECTORY feature is enabled by default on Cygwin, as that is the platform which currently appears to benefit the most from this option. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-14 12:15:57 +01:00
NO_FAST_WORKING_DIRECTORY = UnfortunatelyYes
NO_TRUSTABLE_FILEMODE = UnfortunatelyYes
OLD_ICONV = UnfortunatelyYes
# There are conflicting reports about this.
# On some boxes NO_MMAP is needed, and not so elsewhere.
# Try commenting this out if you suspect MMAP is more efficient
NO_MMAP = YesPlease
NO_IPV6 = YesPlease
2005-09-29 04:08:37 +02:00
X = .exe
endif
ifeq ($(uname_S),FreeBSD)
NEEDS_LIBICONV = YesPlease
NO_MEMMEM = YesPlease
BASIC_CFLAGS += -I/usr/local/include
BASIC_LDFLAGS += -L/usr/local/lib
DIR_HAS_BSD_GROUP_SEMANTICS = YesPlease
COMPAT_CFLAGS += -Icompat/regex
COMPAT_OBJS += compat/regex/regex.o
endif
ifeq ($(uname_S),OpenBSD)
NO_STRCASESTR = YesPlease
NO_MEMMEM = YesPlease
NEEDS_LIBICONV = YesPlease
BASIC_CFLAGS += -I/usr/local/include
BASIC_LDFLAGS += -L/usr/local/lib
endif
ifeq ($(uname_S),NetBSD)
ifeq ($(shell expr "$(uname_R)" : '[01]\.'),2)
NEEDS_LIBICONV = YesPlease
endif
BASIC_CFLAGS += -I/usr/pkg/include
BASIC_LDFLAGS += -L/usr/pkg/lib
ALL_LDFLAGS += -Wl,-rpath,/usr/pkg/lib
endif
ifeq ($(uname_S),AIX)
NO_STRCASESTR=YesPlease
NO_MEMMEM = YesPlease
NO_MKDTEMP = YesPlease
NO_STRLCPY = YesPlease
FREAD_READS_DIRECTORIES = UnfortunatelyYes
INTERNAL_QSORT = UnfortunatelyYes
NEEDS_LIBICONV=YesPlease
BASIC_CFLAGS += -D_LARGE_FILES
COMPAT_CFLAGS += -Icompat/regex
COMPAT_OBJS += compat/regex/regex.o
endif
ifeq ($(uname_S),GNU)
# GNU/Hurd
NO_STRLCPY=YesPlease
endif
ifeq ($(uname_S),IRIX64)
NO_IPV6=YesPlease
NO_SETENV=YesPlease
NO_STRCASESTR=YesPlease
NO_MEMMEM = YesPlease
NO_STRLCPY = YesPlease
NO_SOCKADDR_STORAGE=YesPlease
SHELL_PATH=/usr/gnu/bin/bash
BASIC_CFLAGS += -DPATH_MAX=1024
# for now, build 32-bit version
BASIC_LDFLAGS += -L/usr/lib32
endif
ifeq ($(uname_S),HP-UX)
NO_IPV6=YesPlease
NO_SETENV=YesPlease
NO_STRCASESTR=YesPlease
NO_MEMMEM = YesPlease
NO_STRLCPY = YesPlease
NO_MKDTEMP = YesPlease
NO_UNSETENV = YesPlease
NO_HSTRERROR = YesPlease
NO_SYS_SELECT_H = YesPlease
SNPRINTF_RETURNS_BOGUS = YesPlease
endif
ifneq (,$(findstring MINGW,$(uname_S)))
NO_MMAP = YesPlease
NO_PREAD = YesPlease
NO_OPENSSL = YesPlease
NO_CURL = YesPlease
NO_SYMLINK_HEAD = YesPlease
NO_IPV6 = YesPlease
NO_SETENV = YesPlease
NO_UNSETENV = YesPlease
NO_STRCASESTR = YesPlease
NO_STRLCPY = YesPlease
NO_MEMMEM = YesPlease
NEEDS_LIBICONV = YesPlease
OLD_ICONV = YesPlease
NO_C99_FORMAT = YesPlease
NO_STRTOUMAX = YesPlease
NO_MKDTEMP = YesPlease
SNPRINTF_RETURNS_BOGUS = YesPlease
NO_SVN_TESTS = YesPlease
NO_PERL_MAKEMAKER = YesPlease
NO_POSIX_ONLY_PROGRAMS = YesPlease
COMPAT_CFLAGS += -D__USE_MINGW_ACCESS -DNOGDI -Icompat -Icompat/regex -Icompat/fnmatch
COMPAT_CFLAGS += -DSNPRINTF_SIZE_CORR=1
COMPAT_CFLAGS += -DSTRIP_EXTENSION=\".exe\"
COMPAT_OBJS += compat/mingw.o compat/fnmatch/fnmatch.o compat/regex/regex.o compat/winansi.o
EXTLIBS += -lws2_32
X = .exe
gitexecdir = ../libexec/git-core
template_dir = ../share/git-core/templates/
ETC_GITCONFIG = ../etc/gitconfig
endif
ifneq (,$(findstring arm,$(uname_M)))
ARM_SHA1 = YesPlease
endif
-include config.mak.autogen
-include config.mak
ifeq ($(uname_S),Darwin)
ifndef NO_FINK
ifeq ($(shell test -d /sw/lib && echo y),y)
BASIC_CFLAGS += -I/sw/include
BASIC_LDFLAGS += -L/sw/lib
endif
endif
ifndef NO_DARWIN_PORTS
ifeq ($(shell test -d /opt/local/lib && echo y),y)
BASIC_CFLAGS += -I/opt/local/include
BASIC_LDFLAGS += -L/opt/local/lib
endif
endif
endif
ifdef NO_R_TO_GCC_LINKER
# Some gcc does not accept and pass -R to the linker to specify
# the runtime dynamic library path.
CC_LD_DYNPATH = -Wl,-rpath=
else
CC_LD_DYNPATH = -R
endif
ifdef NO_CURL
BASIC_CFLAGS += -DNO_CURL
else
ifdef CURLDIR
# Try "-Wl,-rpath=$(CURLDIR)/$(lib)" in such a case.
BASIC_CFLAGS += -I$(CURLDIR)/include
CURL_LIBCURL = -L$(CURLDIR)/$(lib) $(CC_LD_DYNPATH)$(CURLDIR)/$(lib) -lcurl
else
CURL_LIBCURL = -lcurl
endif
BUILTIN_OBJS += builtin-http-fetch.o
EXTLIBS += $(CURL_LIBCURL)
LIB_OBJS += http.o http-walker.o
curl_check := $(shell (echo 070908; curl-config --vernum) | sort -r | sed -ne 2p)
ifeq "$(curl_check)" "070908"
ifndef NO_EXPAT
PROGRAMS += git-http-push$X
endif
endif
ifndef NO_EXPAT
EXPAT_LIBEXPAT = -lexpat
endif
endif
ifdef ZLIB_PATH
BASIC_CFLAGS += -I$(ZLIB_PATH)/include
EXTLIBS += -L$(ZLIB_PATH)/$(lib) $(CC_LD_DYNPATH)$(ZLIB_PATH)/$(lib)
endif
EXTLIBS += -lz
ifndef NO_POSIX_ONLY_PROGRAMS
PROGRAMS += git-daemon$X
PROGRAMS += git-imap-send$X
PROGRAMS += git-shell$X
endif
ifndef NO_OPENSSL
OPENSSL_LIBSSL = -lssl
ifdef OPENSSLDIR
BASIC_CFLAGS += -I$(OPENSSLDIR)/include
OPENSSL_LINK = -L$(OPENSSLDIR)/$(lib) $(CC_LD_DYNPATH)$(OPENSSLDIR)/$(lib)
else
OPENSSL_LINK =
endif
else
BASIC_CFLAGS += -DNO_OPENSSL
MOZILLA_SHA1 = 1
OPENSSL_LIBSSL =
endif
ifdef NEEDS_SSL_WITH_CRYPTO
LIB_4_CRYPTO = $(OPENSSL_LINK) -lcrypto -lssl
else
LIB_4_CRYPTO = $(OPENSSL_LINK) -lcrypto
endif
ifdef NEEDS_LIBICONV
ifdef ICONVDIR
BASIC_CFLAGS += -I$(ICONVDIR)/include
ICONV_LINK = -L$(ICONVDIR)/$(lib) $(CC_LD_DYNPATH)$(ICONVDIR)/$(lib)
else
ICONV_LINK =
endif
EXTLIBS += $(ICONV_LINK) -liconv
endif
ifdef NEEDS_SOCKET
EXTLIBS += -lsocket
endif
ifdef NEEDS_NSL
EXTLIBS += -lnsl
endif
ifdef NO_D_TYPE_IN_DIRENT
BASIC_CFLAGS += -DNO_D_TYPE_IN_DIRENT
endif
ifdef NO_D_INO_IN_DIRENT
BASIC_CFLAGS += -DNO_D_INO_IN_DIRENT
endif
ifdef NO_C99_FORMAT
BASIC_CFLAGS += -DNO_C99_FORMAT
endif
ifdef SNPRINTF_RETURNS_BOGUS
COMPAT_CFLAGS += -DSNPRINTF_RETURNS_BOGUS
COMPAT_OBJS += compat/snprintf.o
endif
ifdef FREAD_READS_DIRECTORIES
COMPAT_CFLAGS += -DFREAD_READS_DIRECTORIES
COMPAT_OBJS += compat/fopen.o
endif
ifdef NO_SYMLINK_HEAD
BASIC_CFLAGS += -DNO_SYMLINK_HEAD
endif
ifdef NO_STRCASESTR
COMPAT_CFLAGS += -DNO_STRCASESTR
COMPAT_OBJS += compat/strcasestr.o
endif
ifdef NO_STRLCPY
COMPAT_CFLAGS += -DNO_STRLCPY
COMPAT_OBJS += compat/strlcpy.o
endif
ifdef NO_STRTOUMAX
COMPAT_CFLAGS += -DNO_STRTOUMAX
COMPAT_OBJS += compat/strtoumax.o
endif
ifdef NO_STRTOULL
COMPAT_CFLAGS += -DNO_STRTOULL
endif
ifdef NO_SETENV
COMPAT_CFLAGS += -DNO_SETENV
COMPAT_OBJS += compat/setenv.o
endif
ifdef NO_MKDTEMP
COMPAT_CFLAGS += -DNO_MKDTEMP
COMPAT_OBJS += compat/mkdtemp.o
endif
ifdef NO_UNSETENV
COMPAT_CFLAGS += -DNO_UNSETENV
COMPAT_OBJS += compat/unsetenv.o
endif
ifdef NO_SYS_SELECT_H
BASIC_CFLAGS += -DNO_SYS_SELECT_H
endif
ifdef NO_MMAP
COMPAT_CFLAGS += -DNO_MMAP
COMPAT_OBJS += compat/mmap.o
endif
ifdef NO_PREAD
COMPAT_CFLAGS += -DNO_PREAD
COMPAT_OBJS += compat/pread.o
endif
Avoid accessing a slow working copy during diffcore operations. The Cygwin folks have done a fine job at creating a POSIX layer on Windows That Just Works(tm). However it comes with a penalty; accessing files in the working tree by way of stat/open/mmap can be slower for diffcore than inflating the data from a blob which is stored in a packfile. This performance problem is especially an issue in merge-recursive when dealing with nearly 7000 added files, as we are loading each file's content from the working directory to perform rename detection. I have literally seen (and sadly watched) paint dry in less time than it takes for merge-recursive to finish such a merge. On the other hand this very same merge runs very fast on Solaris. If Git is compiled with NO_FAST_WORKING_DIRECTORY set then we will avoid looking at the working directory when the blob in question is available within a packfile and the caller doesn't need the data unpacked into a temporary file. We don't use loose objects as they have the same open/mmap/close costs as the working directory file access, but have the additional CPU overhead of needing to inflate the content before use. So it is still faster to use the working tree file over the loose object. If the caller needs the file data unpacked into a temporary file its likely because they are going to call an external diff program, passing the file as a parameter. In this case reusing the working tree file will be faster as we don't need to inflate the data and write it out to a temporary file. The NO_FAST_WORKING_DIRECTORY feature is enabled by default on Cygwin, as that is the platform which currently appears to benefit the most from this option. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-14 12:15:57 +01:00
ifdef NO_FAST_WORKING_DIRECTORY
BASIC_CFLAGS += -DNO_FAST_WORKING_DIRECTORY
endif
ifdef NO_TRUSTABLE_FILEMODE
BASIC_CFLAGS += -DNO_TRUSTABLE_FILEMODE
endif
ifdef NO_IPV6
BASIC_CFLAGS += -DNO_IPV6
endif
ifdef NO_SOCKADDR_STORAGE
ifdef NO_IPV6
BASIC_CFLAGS += -Dsockaddr_storage=sockaddr_in
else
BASIC_CFLAGS += -Dsockaddr_storage=sockaddr_in6
endif
endif
ifdef NO_INET_NTOP
LIB_OBJS += compat/inet_ntop.o
endif
ifdef NO_INET_PTON
LIB_OBJS += compat/inet_pton.o
endif
ifdef NO_ICONV
BASIC_CFLAGS += -DNO_ICONV
endif
ifdef OLD_ICONV
BASIC_CFLAGS += -DOLD_ICONV
endif
ifdef NO_DEFLATE_BOUND
BASIC_CFLAGS += -DNO_DEFLATE_BOUND
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>
EXTLIBS += $(LIB_4_CRYPTO)
endif
endif
endif
ifdef NO_PERL_MAKEMAKER
export NO_PERL_MAKEMAKER
endif
ifdef NO_HSTRERROR
COMPAT_CFLAGS += -DNO_HSTRERROR
COMPAT_OBJS += compat/hstrerror.o
endif
ifdef NO_MEMMEM
COMPAT_CFLAGS += -DNO_MEMMEM
COMPAT_OBJS += compat/memmem.o
endif
ifdef INTERNAL_QSORT
COMPAT_CFLAGS += -DINTERNAL_QSORT
COMPAT_OBJS += compat/qsort.o
endif
ifdef THREADED_DELTA_SEARCH
BASIC_CFLAGS += -DTHREADED_DELTA_SEARCH
EXTLIBS += -lpthread
LIB_OBJS += thread-utils.o
endif
ifdef DIR_HAS_BSD_GROUP_SEMANTICS
COMPAT_CFLAGS += -DDIR_HAS_BSD_GROUP_SEMANTICS
endif
ifdef NO_EXTERNAL_GREP
BASIC_CFLAGS += -DNO_EXTERNAL_GREP
endif
ifeq ($(TCLTK_PATH),)
NO_TCLTK=NoThanks
endif
QUIET_SUBDIR0 = +$(MAKE) -C # space to separate -C and subdir
QUIET_SUBDIR1 =
ifneq ($(findstring $(MAKEFLAGS),w),w)
PRINT_DIR = --no-print-directory
else # "make -w"
NO_SUBDIR = :
endif
ifneq ($(findstring $(MAKEFLAGS),s),s)
ifndef V
QUIET_CC = @echo ' ' CC $@;
QUIET_AR = @echo ' ' AR $@;
QUIET_LINK = @echo ' ' LINK $@;
QUIET_BUILT_IN = @echo ' ' BUILTIN $@;
QUIET_GEN = @echo ' ' GEN $@;
QUIET_SUBDIR0 = +@subdir=
QUIET_SUBDIR1 = ;$(NO_SUBDIR) echo ' ' SUBDIR $$subdir; \
$(MAKE) $(PRINT_DIR) -C $$subdir
export V
export QUIET_GEN
export QUIET_BUILT_IN
endif
endif
ifdef ASCIIDOC8
export ASCIIDOC8
endif
# Shell quote (do not use $(call) to accommodate ancient setups);
SHA1_HEADER_SQ = $(subst ','\'',$(SHA1_HEADER))
ETC_GITCONFIG_SQ = $(subst ','\'',$(ETC_GITCONFIG))
DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
bindir_SQ = $(subst ','\'',$(bindir))
mandir_SQ = $(subst ','\'',$(mandir))
infodir_SQ = $(subst ','\'',$(infodir))
gitexecdir_SQ = $(subst ','\'',$(gitexecdir))
template_dir_SQ = $(subst ','\'',$(template_dir))
htmldir_SQ = $(subst ','\'',$(htmldir))
prefix_SQ = $(subst ','\'',$(prefix))
SHELL_PATH_SQ = $(subst ','\'',$(SHELL_PATH))
PERL_PATH_SQ = $(subst ','\'',$(PERL_PATH))
TCLTK_PATH_SQ = $(subst ','\'',$(TCLTK_PATH))
LIBS = $(GITLIBS) $(EXTLIBS)
BASIC_CFLAGS += -DSHA1_HEADER='$(SHA1_HEADER_SQ)' \
$(COMPAT_CFLAGS)
LIB_OBJS += $(COMPAT_OBJS)
ALL_CFLAGS += $(BASIC_CFLAGS)
ALL_LDFLAGS += $(BASIC_LDFLAGS)
export TAR INSTALL DESTDIR SHELL_PATH
### Build rules
SHELL = $(SHELL_PATH)
all:: shell_compatibility_test $(ALL_PROGRAMS) $(BUILT_INS) $(OTHER_PROGRAMS) GIT-BUILD-OPTIONS
ifneq (,$X)
$(foreach p,$(patsubst %$X,%,$(filter %$X,$(ALL_PROGRAMS) $(BUILT_INS) git$X)), test '$p' -ef '$p$X' || $(RM) '$p';)
endif
all::
ifndef NO_TCLTK
$(QUIET_SUBDIR0)git-gui $(QUIET_SUBDIR1) gitexecdir='$(gitexec_instdir_SQ)' all
$(QUIET_SUBDIR0)gitk-git $(QUIET_SUBDIR1) all
endif
$(QUIET_SUBDIR0)perl $(QUIET_SUBDIR1) PERL_PATH='$(PERL_PATH_SQ)' prefix='$(prefix_SQ)' all
$(QUIET_SUBDIR0)templates $(QUIET_SUBDIR1)
please_set_SHELL_PATH_to_a_more_modern_shell:
@$$(:)
shell_compatibility_test: please_set_SHELL_PATH_to_a_more_modern_shell
strip: $(PROGRAMS) git$X
$(STRIP) $(STRIP_OPTS) $(PROGRAMS) git$X
git.o: git.c common-cmds.h GIT-CFLAGS
$(QUIET_CC)$(CC) -DGIT_VERSION='"$(GIT_VERSION)"' \
$(ALL_CFLAGS) -c $(filter %.c,$^)
git$X: git.o $(BUILTIN_OBJS) $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ git.o \
$(BUILTIN_OBJS) $(ALL_LDFLAGS) $(LIBS)
help.o: help.c common-cmds.h GIT-CFLAGS
$(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) \
'-DGIT_HTML_PATH="$(htmldir_SQ)"' \
'-DGIT_MAN_PATH="$(mandir_SQ)"' \
'-DGIT_INFO_PATH="$(infodir_SQ)"' $<
$(BUILT_INS): git$X
$(QUIET_BUILT_IN)$(RM) $@ && \
ln git$X $@ 2>/dev/null || \
ln -s git$X $@ 2>/dev/null || \
cp git$X $@
common-cmds.h: ./generate-cmdlist.sh command-list.txt
common-cmds.h: $(wildcard Documentation/git-*.txt)
$(QUIET_GEN)./generate-cmdlist.sh > $@+ && mv $@+ $@
$(patsubst %.sh,%,$(SCRIPT_SH)) : % : %.sh
$(QUIET_GEN)$(RM) $@ $@+ && \
sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
-e 's|@SHELL_PATH@|$(SHELL_PATH_SQ)|' \
-e 's|@@PERL@@|$(PERL_PATH_SQ)|g' \
-e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g' \
-e 's/@@NO_CURL@@/$(NO_CURL)/g' \
$@.sh >$@+ && \
chmod +x $@+ && \
mv $@+ $@
$(patsubst %.perl,%,$(SCRIPT_PERL)): perl/perl.mak
perl/perl.mak: GIT-CFLAGS perl/Makefile perl/Makefile.PL
$(QUIET_SUBDIR0)perl $(QUIET_SUBDIR1) PERL_PATH='$(PERL_PATH_SQ)' prefix='$(prefix_SQ)' $(@F)
$(patsubst %.perl,%,$(SCRIPT_PERL)): % : %.perl
$(QUIET_GEN)$(RM) $@ $@+ && \
INSTLIBDIR=`MAKEFLAGS= $(MAKE) -C perl -s --no-print-directory instlibdir` && \
sed -e '1{' \
-e ' s|#!.*perl|#!$(PERL_PATH_SQ)|' \
-e ' h' \
-e ' s=.*=use lib (split(/:/, $$ENV{GITPERLLIB} || "@@INSTLIBDIR@@"));=' \
-e ' H' \
-e ' x' \
-e '}' \
-e 's|@@INSTLIBDIR@@|'"$$INSTLIBDIR"'|g' \
-e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g' \
$@.perl >$@+ && \
chmod +x $@+ && \
mv $@+ $@
gitweb/gitweb.cgi: gitweb/gitweb.perl
$(QUIET_GEN)$(RM) $@ $@+ && \
sed -e '1s|#!.*perl|#!$(PERL_PATH_SQ)|' \
-e 's|++GIT_VERSION++|$(GIT_VERSION)|g' \
-e 's|++GIT_BINDIR++|$(bindir)|g' \
-e 's|++GITWEB_CONFIG++|$(GITWEB_CONFIG)|g' \
-e 's|++GITWEB_CONFIG_SYSTEM++|$(GITWEB_CONFIG_SYSTEM)|g' \
-e 's|++GITWEB_HOME_LINK_STR++|$(GITWEB_HOME_LINK_STR)|g' \
-e 's|++GITWEB_SITENAME++|$(GITWEB_SITENAME)|g' \
-e 's|++GITWEB_PROJECTROOT++|$(GITWEB_PROJECTROOT)|g' \
-e 's|"++GITWEB_PROJECT_MAXDEPTH++"|$(GITWEB_PROJECT_MAXDEPTH)|g' \
-e 's|++GITWEB_EXPORT_OK++|$(GITWEB_EXPORT_OK)|g' \
-e 's|++GITWEB_STRICT_EXPORT++|$(GITWEB_STRICT_EXPORT)|g' \
-e 's|++GITWEB_BASE_URL++|$(GITWEB_BASE_URL)|g' \
-e 's|++GITWEB_LIST++|$(GITWEB_LIST)|g' \
-e 's|++GITWEB_HOMETEXT++|$(GITWEB_HOMETEXT)|g' \
-e 's|++GITWEB_CSS++|$(GITWEB_CSS)|g' \
-e 's|++GITWEB_LOGO++|$(GITWEB_LOGO)|g' \
-e 's|++GITWEB_FAVICON++|$(GITWEB_FAVICON)|g' \
-e 's|++GITWEB_SITE_HEADER++|$(GITWEB_SITE_HEADER)|g' \
-e 's|++GITWEB_SITE_FOOTER++|$(GITWEB_SITE_FOOTER)|g' \
$< >$@+ && \
chmod +x $@+ && \
mv $@+ $@
git-instaweb: git-instaweb.sh gitweb/gitweb.cgi gitweb/gitweb.css
$(QUIET_GEN)$(RM) $@ $@+ && \
sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
-e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g' \
-e 's/@@NO_CURL@@/$(NO_CURL)/g' \
-e '/@@GITWEB_CGI@@/r gitweb/gitweb.cgi' \
-e '/@@GITWEB_CGI@@/d' \
-e '/@@GITWEB_CSS@@/r gitweb/gitweb.css' \
-e '/@@GITWEB_CSS@@/d' \
-e 's|@@PERL@@|$(PERL_PATH_SQ)|g' \
$@.sh > $@+ && \
chmod +x $@+ && \
mv $@+ $@
configure: configure.ac
$(QUIET_GEN)$(RM) $@ $<+ && \
sed -e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g' \
$< > $<+ && \
autoconf -o $@ $<+ && \
$(RM) $<+
# These can record GIT_VERSION
git.o git.spec \
$(patsubst %.sh,%,$(SCRIPT_SH)) \
$(patsubst %.perl,%,$(SCRIPT_PERL)) \
: GIT-VERSION-FILE
%.o: %.c GIT-CFLAGS
$(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) $<
%.s: %.c GIT-CFLAGS
$(QUIET_CC)$(CC) -S $(ALL_CFLAGS) $<
%.o: %.S
$(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) $<
exec_cmd.o: exec_cmd.c GIT-CFLAGS
$(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) '-DGIT_EXEC_PATH="$(gitexecdir_SQ)"' $<
builtin-init-db.o: builtin-init-db.c GIT-CFLAGS
$(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) -DDEFAULT_GIT_TEMPLATE_DIR='"$(template_dir_SQ)"' $<
config.o: config.c GIT-CFLAGS
$(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) -DETC_GITCONFIG='"$(ETC_GITCONFIG_SQ)"' $<
http.o: http.c GIT-CFLAGS
$(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) -DGIT_USER_AGENT='"git/$(GIT_VERSION)"' $<
ifdef NO_EXPAT
http-walker.o: http-walker.c http.h GIT-CFLAGS
$(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) -DNO_EXPAT $<
endif
git-%$X: %.o $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) $(LIBS)
git-imap-send$X: imap-send.o $(LIB_FILE)
http.o http-walker.o http-push.o transport.o: http.h
git-http-push$X: revision.o http.o http-push.o $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
$(LIBS) $(CURL_LIBCURL) $(EXPAT_LIBEXPAT)
$(LIB_OBJS) $(BUILTIN_OBJS): $(LIB_H)
$(patsubst git-%$X,%.o,$(PROGRAMS)): $(LIB_H) $(wildcard */*.h)
builtin-revert.o wt-status.o: wt-status.h
$(LIB_FILE): $(LIB_OBJS)
$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(LIB_OBJS)
XDIFF_OBJS=xdiff/xdiffi.o xdiff/xprepare.o xdiff/xutils.o xdiff/xemit.o \
xdiff/xmerge.o
$(XDIFF_OBJS): xdiff/xinclude.h xdiff/xmacros.h xdiff/xdiff.h xdiff/xtypes.h \
xdiff/xutils.h xdiff/xprepare.h xdiff/xdiffi.h xdiff/xemit.h
Use a *real* built-in diff generator This uses a simplified libxdiff setup to generate unified diffs _without_ doing fork/execve of GNU "diff". This has several huge advantages, for example: Before: [torvalds@g5 linux]$ time git diff v2.6.16.. > /dev/null real 0m24.818s user 0m13.332s sys 0m8.664s After: [torvalds@g5 linux]$ time git diff v2.6.16.. > /dev/null real 0m4.563s user 0m2.944s sys 0m1.580s and the fact that this should be a lot more portable (ie we can ignore all the issues with doing fork/execve under Windows). Perhaps even more importantly, this allows us to do diffs without actually ever writing out the git file contents to a temporary file (and without any of the shell quoting issues on filenames etc etc). NOTE! THIS PATCH DOES NOT DO THAT OPTIMIZATION YET! I was lazy, and the current "diff-core" code actually will always write the temp-files, because it used to be something that you simply had to do. So this current one actually writes a temp-file like before, and then reads it into memory again just to do the diff. Stupid. But if this basic infrastructure is accepted, we can start switching over diff-core to not write temp-files, which should speed things up even further, especially when doing big tree-to-tree diffs. Now, in the interest of full disclosure, I should also point out a few downsides: - the libxdiff algorithm is different, and I bet GNU diff has gotten a lot more testing. And the thing is, generating a diff is not an exact science - you can get two different diffs (and you will), and they can both be perfectly valid. So it's not possible to "validate" the libxdiff output by just comparing it against GNU diff. - GNU diff does some nice eye-candy, like trying to figure out what the last function was, and adding that information to the "@@ .." line. libxdiff doesn't do that. - The libxdiff thing has some known deficiencies. In particular, it gets the "\No newline at end of file" case wrong. So this is currently for the experimental branch only. I hope Davide will help fix it. That said, I think the huge performance advantage, and the fact that it integrates better is definitely worth it. But it should go into a development branch at least due to the missing newline issue. Technical note: this is based on libxdiff-0.17, but I did some surgery to get rid of the extraneous fat - stuff that git doesn't need, and seriously cutting down on mmfile_t, which had much more capabilities than the diff algorithm either needed or used. In this version, "mmfile_t" is just a trivial <pointer,length> tuple. That said, I tried to keep the differences to simple removals, so that you can do a diff between this and the libxdiff origin, and you'll basically see just things getting deleted. Even the mmfile_t simplifications are left in a state where the diffs should be readable. Apologies to Davide, whom I'd love to get feedback on this all from (I wrote my own "fill_mmfile()" for the new simpler mmfile_t format: the old complex format had a helper function for that, but I did my surgery with the goal in mind that eventually we _should_ just do mmfile_t mf; buf = read_sha1_file(sha1, type, &size); mf->ptr = buf; mf->size = size; .. use "mf" directly .. which was really a nightmare with the old "helpful" mmfile_t, and really is that easy with the new cut-down interfaces). [ Btw, as any hawk-eye can see from the diff, this was actually generated with itself, so it is "self-hosting". That's about all the testing it has gotten, along with the above kernel diff, which eye-balls correctly, but shows the newline issue when you double-check it with "git-apply" ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-03-25 05:13:22 +01:00
$(XDIFF_LIB): $(XDIFF_OBJS)
$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(XDIFF_OBJS)
Use a *real* built-in diff generator This uses a simplified libxdiff setup to generate unified diffs _without_ doing fork/execve of GNU "diff". This has several huge advantages, for example: Before: [torvalds@g5 linux]$ time git diff v2.6.16.. > /dev/null real 0m24.818s user 0m13.332s sys 0m8.664s After: [torvalds@g5 linux]$ time git diff v2.6.16.. > /dev/null real 0m4.563s user 0m2.944s sys 0m1.580s and the fact that this should be a lot more portable (ie we can ignore all the issues with doing fork/execve under Windows). Perhaps even more importantly, this allows us to do diffs without actually ever writing out the git file contents to a temporary file (and without any of the shell quoting issues on filenames etc etc). NOTE! THIS PATCH DOES NOT DO THAT OPTIMIZATION YET! I was lazy, and the current "diff-core" code actually will always write the temp-files, because it used to be something that you simply had to do. So this current one actually writes a temp-file like before, and then reads it into memory again just to do the diff. Stupid. But if this basic infrastructure is accepted, we can start switching over diff-core to not write temp-files, which should speed things up even further, especially when doing big tree-to-tree diffs. Now, in the interest of full disclosure, I should also point out a few downsides: - the libxdiff algorithm is different, and I bet GNU diff has gotten a lot more testing. And the thing is, generating a diff is not an exact science - you can get two different diffs (and you will), and they can both be perfectly valid. So it's not possible to "validate" the libxdiff output by just comparing it against GNU diff. - GNU diff does some nice eye-candy, like trying to figure out what the last function was, and adding that information to the "@@ .." line. libxdiff doesn't do that. - The libxdiff thing has some known deficiencies. In particular, it gets the "\No newline at end of file" case wrong. So this is currently for the experimental branch only. I hope Davide will help fix it. That said, I think the huge performance advantage, and the fact that it integrates better is definitely worth it. But it should go into a development branch at least due to the missing newline issue. Technical note: this is based on libxdiff-0.17, but I did some surgery to get rid of the extraneous fat - stuff that git doesn't need, and seriously cutting down on mmfile_t, which had much more capabilities than the diff algorithm either needed or used. In this version, "mmfile_t" is just a trivial <pointer,length> tuple. That said, I tried to keep the differences to simple removals, so that you can do a diff between this and the libxdiff origin, and you'll basically see just things getting deleted. Even the mmfile_t simplifications are left in a state where the diffs should be readable. Apologies to Davide, whom I'd love to get feedback on this all from (I wrote my own "fill_mmfile()" for the new simpler mmfile_t format: the old complex format had a helper function for that, but I did my surgery with the goal in mind that eventually we _should_ just do mmfile_t mf; buf = read_sha1_file(sha1, type, &size); mf->ptr = buf; mf->size = size; .. use "mf" directly .. which was really a nightmare with the old "helpful" mmfile_t, and really is that easy with the new cut-down interfaces). [ Btw, as any hawk-eye can see from the diff, this was actually generated with itself, so it is "self-hosting". That's about all the testing it has gotten, along with the above kernel diff, which eye-balls correctly, but shows the newline issue when you double-check it with "git-apply" ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-03-25 05:13:22 +01:00
doc:
$(MAKE) -C Documentation all
info:
$(MAKE) -C Documentation info
TAGS:
$(RM) TAGS
$(FIND) . -name '*.[hcS]' -print | xargs etags -a
tags:
$(RM) tags
$(FIND) . -name '*.[hcS]' -print | xargs ctags -a
cscope:
$(RM) cscope*
$(FIND) . -name '*.[hcS]' -print | xargs cscope -b
### Detect prefix changes
TRACK_CFLAGS = $(subst ','\'',$(ALL_CFLAGS)):\
$(bindir_SQ):$(gitexecdir_SQ):$(template_dir_SQ):$(prefix_SQ)
GIT-CFLAGS: .FORCE-GIT-CFLAGS
@FLAGS='$(TRACK_CFLAGS)'; \
if test x"$$FLAGS" != x"`cat GIT-CFLAGS 2>/dev/null`" ; then \
echo 1>&2 " * new build flags or prefix"; \
echo "$$FLAGS" >GIT-CFLAGS; \
fi
# We need to apply sq twice, once to protect from the shell
# that runs GIT-BUILD-OPTIONS, and then again to protect it
# and the first level quoting from the shell that runs "echo".
GIT-BUILD-OPTIONS: .FORCE-GIT-BUILD-OPTIONS
@echo SHELL_PATH=\''$(subst ','\'',$(SHELL_PATH_SQ))'\' >$@
@echo TAR=\''$(subst ','\'',$(subst ','\'',$(TAR)))'\' >>$@
### Detect Tck/Tk interpreter path changes
ifndef NO_TCLTK
TRACK_VARS = $(subst ','\'',-DTCLTK_PATH='$(TCLTK_PATH_SQ)')
GIT-GUI-VARS: .FORCE-GIT-GUI-VARS
@VARS='$(TRACK_VARS)'; \
if test x"$$VARS" != x"`cat $@ 2>/dev/null`" ; then \
echo 1>&2 " * new Tcl/Tk interpreter location"; \
echo "$$VARS" >$@; \
fi
.PHONY: .FORCE-GIT-GUI-VARS
endif
### Testing rules
TEST_PROGRAMS = test-chmtime$X test-dump-cache-tree$X test-genrandom$X test-date$X test-delta$X test-sha1$X test-match-trees$X test-parse-options$X test-path-utils$X
all:: $(TEST_PROGRAMS)
# GNU make supports exporting all variables by "export" without parameters.
# However, the environment gets quite big, and some programs have problems
# with that.
export NO_SVN_TESTS
test: all
$(MAKE) -C t/ all
test-date$X: date.o ctype.o
test-delta$X: diff-delta.o patch-delta.o
test-parse-options$X: parse-options.o
.PRECIOUS: $(patsubst test-%$X,test-%.o,$(TEST_PROGRAMS))
test-%$X: test-%.o $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) $(LIBS)
check-sha1:: test-sha1$X
./test-sha1.sh
check: common-cmds.h
if sparse; \
then \
for i in *.c; \
do \
sparse $(ALL_CFLAGS) $(SPARSE_FLAGS) $$i || exit; \
done; \
else \
echo 2>&1 "Did you mean 'make test'?"; \
exit 1; \
fi
Start deprecating "git-command" in favor of "git command" I realize that a lot of people use the "git-xyzzy" format, and we have various historical reasons for it, but I also think that most people have long since started thinking of the git command as a single command with various subcommands, and we've long had the documentation talk about it that way. Slowly migrating away from the git-xyzzy format would allow us to eventually no longer install hundreds of binaries (even if most of them are symlinks or hardlinks) in users $PATH, and the _original_ reasons for it (implementation issues and bash completion) are really long long gone. Using "git xyzzy" also has some fundamental advantages, like the ability to specify things like paging ("git -p xyzzy") and making the whole notion of aliases act like other git commands (which they already do, but they do *not* have a "git-xyzzy" form!) Anyway, while actually removing the "git-xyzzy" things is not practical right now, we can certainly start slowly to deprecate it internally inside git itself - in the shell scripts we use, and the test vectors. This patch adds a "remove-dashes" makefile target, which does that. It isn't particularly efficient or smart, but it *does* successfully rewrite a lot of our shell scripts to use the "git xyzzy" form for all built-in commands. (For non-builtins, the "git xyzzy" format implies an extra execve(), so this script leaves those alone). So apply this patch, and then run make remove-dashes make test git commit -a to generate a much larger patch that actually starts this transformation. (The only half-way subtle thing about this is that it also fixes up git-filter-branch.sh for the new world order by adding quoting around the use of "git-commit-tree" as an argument. It doesn't need it in that format, but when changed into "git commit-tree" it is no longer a single word, and the quoting maintains the old behaviour). NOTE! This does not yet mean that you can actually stop installing the "git-xyzzy" binaries for the builtins. There are some remaining places that want to use the old form, this just removes the most obvious ones that can easily be done automatically. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-06-30 20:49:17 +02:00
remove-dashes:
./fixup-builtins $(BUILT_INS) $(PROGRAMS) $(SCRIPTS)
### Installation rules
ifeq ($(firstword $(subst /, ,$(template_dir))),..)
template_instdir = $(bindir)/$(template_dir)
else
template_instdir = $(template_dir)
endif
export template_instdir
ifeq ($(firstword $(subst /, ,$(gitexecdir))),..)
gitexec_instdir = $(bindir)/$(gitexecdir)
else
gitexec_instdir = $(gitexecdir)
endif
gitexec_instdir_SQ = $(subst ','\'',$(gitexec_instdir))
export gitexec_instdir
install: all
$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(bindir_SQ)'
$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(gitexec_instdir_SQ)'
$(INSTALL) $(ALL_PROGRAMS) '$(DESTDIR_SQ)$(gitexec_instdir_SQ)'
$(INSTALL) git$X git-upload-pack$X git-receive-pack$X git-upload-archive$X git-shell$X git-cvsserver '$(DESTDIR_SQ)$(bindir_SQ)'
$(MAKE) -C templates DESTDIR='$(DESTDIR_SQ)' install
$(MAKE) -C perl prefix='$(prefix_SQ)' DESTDIR='$(DESTDIR_SQ)' install
ifndef NO_TCLTK
$(MAKE) -C gitk-git install
$(MAKE) -C git-gui gitexecdir='$(gitexec_instdir_SQ)' install
endif
ifneq (,$X)
$(foreach p,$(patsubst %$X,%,$(filter %$X,$(ALL_PROGRAMS) $(BUILT_INS) git$X)), $(RM) '$(DESTDIR_SQ)$(gitexec_instdir_SQ)/$p';)
endif
bindir=$$(cd '$(DESTDIR_SQ)$(bindir_SQ)' && pwd) && \
execdir=$$(cd '$(DESTDIR_SQ)$(gitexec_instdir_SQ)' && pwd) && \
{ $(RM) "$$execdir/git-add$X" && \
ln git-add$X "$$execdir/git-add$X" 2>/dev/null || \
cp git-add$X "$$execdir/git-add$X"; } && \
{ $(foreach p,$(filter-out git-add$X,$(BUILT_INS)), $(RM) "$$execdir/$p" && \
ln "$$execdir/git-add$X" "$$execdir/$p" 2>/dev/null || \
ln -s "git-add$X" "$$execdir/$p" 2>/dev/null || \
cp "$$execdir/git-add$X" "$$execdir/$p" || exit;) } && \
./check_bindir "z$$bindir" "z$$execdir" "$$bindir/git-add$X"
install-doc:
$(MAKE) -C Documentation install
install-html:
$(MAKE) -C Documentation install-html
install-info:
$(MAKE) -C Documentation install-info
quick-install-doc:
$(MAKE) -C Documentation quick-install
### Maintainer's dist rules
git.spec: git.spec.in
sed -e 's/@@VERSION@@/$(GIT_VERSION)/g' < $< > $@+
mv $@+ $@
GIT_TARNAME=git-$(GIT_VERSION)
dist: git.spec git-archive$(X) configure
./git-archive --format=tar \
--prefix=$(GIT_TARNAME)/ HEAD^{tree} > $(GIT_TARNAME).tar
@mkdir -p $(GIT_TARNAME)
@cp git.spec configure $(GIT_TARNAME)
@echo $(GIT_VERSION) > $(GIT_TARNAME)/version
@$(MAKE) -C git-gui TARDIR=../$(GIT_TARNAME)/git-gui dist-version
$(TAR) rf $(GIT_TARNAME).tar \
$(GIT_TARNAME)/git.spec \
$(GIT_TARNAME)/configure \
$(GIT_TARNAME)/version \
$(GIT_TARNAME)/git-gui/version
@$(RM) -r $(GIT_TARNAME)
gzip -f -9 $(GIT_TARNAME).tar
rpm: dist
$(RPMBUILD) -ta $(GIT_TARNAME).tar.gz
htmldocs = git-htmldocs-$(GIT_VERSION)
manpages = git-manpages-$(GIT_VERSION)
dist-doc:
$(RM) -r .doc-tmp-dir
mkdir .doc-tmp-dir
$(MAKE) -C Documentation WEBDOC_DEST=../.doc-tmp-dir install-webdoc
cd .doc-tmp-dir && $(TAR) cf ../$(htmldocs).tar .
gzip -n -9 -f $(htmldocs).tar
:
$(RM) -r .doc-tmp-dir
mkdir -p .doc-tmp-dir/man1 .doc-tmp-dir/man5 .doc-tmp-dir/man7
$(MAKE) -C Documentation DESTDIR=./ \
man1dir=../.doc-tmp-dir/man1 \
man5dir=../.doc-tmp-dir/man5 \
man7dir=../.doc-tmp-dir/man7 \
install
cd .doc-tmp-dir && $(TAR) cf ../$(manpages).tar .
gzip -n -9 -f $(manpages).tar
$(RM) -r .doc-tmp-dir
### Cleaning rules
distclean: clean
$(RM) configure
clean:
$(RM) *.o mozilla-sha1/*.o arm/*.o ppc/*.o compat/*.o xdiff/*.o \
$(LIB_FILE) $(XDIFF_LIB)
$(RM) $(ALL_PROGRAMS) $(BUILT_INS) git$X
$(RM) $(TEST_PROGRAMS)
$(RM) *.spec *.pyc *.pyo */*.pyc */*.pyo common-cmds.h TAGS tags cscope*
$(RM) -r autom4te.cache
$(RM) config.log config.mak.autogen config.mak.append config.status config.cache
$(RM) -r $(GIT_TARNAME) .doc-tmp-dir
$(RM) $(GIT_TARNAME).tar.gz git-core_$(GIT_VERSION)-*.tar.gz
$(RM) $(htmldocs).tar.gz $(manpages).tar.gz
$(RM) gitweb/gitweb.cgi
$(MAKE) -C Documentation/ clean
$(MAKE) -C perl clean
Introduce Git.pm (v4) This patch introduces a very basic and barebone Git.pm module with a sketch of how the generic interface would look like; most functions are missing, but this should give some good base. I will continue expanding it. Most desirable now is more careful error reporting, generic_in() for feeding input to Git commands and the repository() constructor doing some poking with git-rev-parse to get the git directory and subdirectory prefix. Those three are basically the prerequisities for converting git-mv. I will send them as follow-ups to this patch. Currently Git.pm just wraps up exec()s of Git commands, but even that is not trivial to get right and various Git perl scripts do it in various inconsistent ways. In addition to Git.pm, there is now also Git.xs which provides barebone Git.xs for directly interfacing with libgit.a, and as an example providing the hash_object() function using libgit. This adds the Git module, integrates it to the build system and as an example converts the git-fmt-merge-msg.perl script to it (the result is not very impressive since its advantage is not quite apparent in this one, but I just picked up the simplest Git user around). Compared to v3, only very minor things were fixed in this patch (some whitespaces, a missing export, tiny bug in git-fmt-merge-msg.perl); at first I wanted to post them as a separate patch but since this is still only in pu, I decided that it will be cleaner to just resend the patch. My current working state is available all the time at http://pasky.or.cz/~xpasky/git-perl/Git.pm and an irregularily updated API documentation is at http://pasky.or.cz/~xpasky/git-perl/Git.html Many thanks to Jakub Narebski, Junio and others for their feedback. Signed-off-by: Petr Baudis <pasky@suse.cz> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-24 04:34:29 +02:00
$(MAKE) -C templates/ clean
$(MAKE) -C t/ clean
ifndef NO_TCLTK
$(MAKE) -C gitk-git clean
$(MAKE) -C git-gui clean
endif
$(RM) GIT-VERSION-FILE GIT-CFLAGS GIT-GUI-VARS GIT-BUILD-OPTIONS
.PHONY: all install clean strip
.PHONY: shell_compatibility_test please_set_SHELL_PATH_to_a_more_modern_shell
.PHONY: .FORCE-GIT-VERSION-FILE TAGS tags cscope .FORCE-GIT-CFLAGS
.PHONY: .FORCE-GIT-BUILD-OPTIONS
### Check documentation
#
check-docs::
@(for v in $(ALL_PROGRAMS) $(BUILT_INS) git gitk; \
do \
case "$$v" in \
git-merge-octopus | git-merge-ours | git-merge-recursive | \
git-merge-resolve | git-merge-subtree | \
git-fsck-objects | git-init-db | \
git-?*--?* ) continue ;; \
esac ; \
test -f "Documentation/$$v.txt" || \
echo "no doc: $$v"; \
sed -e '/^#/d' command-list.txt | \
grep -q "^$$v[ ]" || \
case "$$v" in \
git) ;; \
*) echo "no link: $$v";; \
esac ; \
done; \
( \
sed -e '/^#/d' \
-e 's/[ ].*//' \
-e 's/^/listed /' command-list.txt; \
ls -1 Documentation/git*txt | \
sed -e 's|Documentation/|documented |' \
-e 's/\.txt//'; \
) | while read how cmd; \
do \
case "$$how,$$cmd" in \
*,git-citool | \
*,git-gui | \
*,git-help | \
documented,gitattributes | \
documented,gitignore | \
documented,gitmodules | \
documented,gitcli | \
documented,git-tools | \
documented,gitcore-tutorial | \
documented,gitcvs-migration | \
documented,gitdiffcore | \
documented,gitglossary | \
documented,githooks | \
documented,gitrepository-layout | \
documented,gittutorial | \
documented,gittutorial-2 | \
sentinel,not,matching,is,ok ) continue ;; \
esac; \
case " $(ALL_PROGRAMS) $(BUILT_INS) git gitk " in \
*" $$cmd "*) ;; \
*) echo "removed but $$how: $$cmd" ;; \
esac; \
done ) | sort
### Make sure built-ins do not have dups and listed in git.c
#
check-builtins::
./check-builtins.sh