92b88eba9f
In d85b0dff72 (Makefile: use `find` to determine static header dependencies, 2014-08-25), we switched from a static list of header files to a dynamically-generated one, asking `find` to enumerate them. Back in those days, we did not use `$(LIB_H)` by default, and many a `make` implementation seems smart enough not to run that `find` command in that case, so it was deemed okay to run `find` for special targets requiring this macro. However, as of ebb7baf02f (Makefile: add a hdr-check target, 2018-09-19), $(LIB_H) is part of a global rule and therefore must be expanded. Meaning: this `find` command has to be run upon every `make` invocation. In the presence of many a worktree, this can tax the developers' patience quite a bit. Even in the absence of worktrees or other untracked files and directories, the cost of I/O to generate that list of header files is simply a lot larger than a simple `git ls-files` call. Therefore, just like in 335339758c (Makefile: ask "ls-files" to list source files if available, 2011-10-18), we now prefer to use `git ls-files` to enumerate the header files to enumerating them via `find`, falling back to the latter if the former failed (which would be the case e.g. in a worktree that was extracted from a source .tar file rather than from a clone of Git's sources). This has one notable consequence: we no longer include `command-list.h` in `LIB_H`, as it is a generated file, not a tracked one, but that is easily worked around. Of the three sites that use `LIB_H`, two (`LOCALIZED_C` and `CHK_HDRS`) already handle generated headers separately. In the third, the computed-dependency fallback, we can just add in a reference to $(GENERATED_H). Likewise, we no longer include not-yet-tracked header files in `LIB_H`. Given the speed improvements, these consequences seem a comparably small price to pay. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Acked-by: Ramsay Jones <ramsay@ramsayjones.plus.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Git - fast, scalable, distributed revision control system
Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.
Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.
Please read the file INSTALL for installation instructions.
Many Git online resources are accessible from https://git-scm.com/ including full documentation and Git related tools.
See Documentation/gittutorial.txt to get started, then see
Documentation/giteveryday.txt for a useful minimum set of commands, and
Documentation/git-.txt for documentation of each command.
If git has been correctly installed, then the tutorial can also be
read with man gittutorial or git help tutorial, and the
documentation of each command with man git-<commandname> or git help <commandname>.
CVS users may also want to read Documentation/gitcvs-migration.txt
(man gitcvs-migration or git help cvs-migration if git is
installed).
The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission). To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org. The mailing list archives are available at https://public-inbox.org/git/, http://marc.info/?l=git and other archival sites.
Issues which are security relevant should be disclosed privately to the Git Security mailing list git-security@googlegroups.com.
The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.
The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (depending on your mood):
- random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant.
- stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang.
- "global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room.
- "goddamn idiotic truckload of sh*t": when it breaks