t/perf: fix benchmarks with out-of-tree builds

The "perf-lib.sh" script is sourced by all of our benchmarking suites to
make available common infrastructure. The script assumes that build and
source directory are the same, which works for our Makefile. But the
assumption breaks with both CMake and Meson, where the build directory
can be located in an arbitrary place.

Adapt the script so that it works with out-of-tree builds. Most
importantly, this requires us to figure out the location of the build
directory:

  - When running benchmarks via our Makefile the build directory is the
    same as the source directory. We already know to derive the test
    directory ("t/") via `$(pwd)/..`, which works because we chdir into
    "t/perf" before executing benchmarks. We can thus derive the build
    directory by appending another "/.." to that path.

  - When running benchmarks via Meson the build directory is located at
    an arbitrary location. The build system thus has to make the path
    known by exporting the `GIT_BUILD_DIR` environment variable.

This change prepares us for wiring up benchmarks in Meson.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 file changed
tree: f1b39e4c42a511b7fd0dd6010f003e1778fdb60e
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  2. bin-wrappers/
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  348. pager.c
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  350. parallel-checkout.c
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  390. range-diff.c
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  397. README.md
  398. rebase-interactive.c
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  402. ref-filter.c
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  427. revision.c
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  429. run-command.c
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  431. sane-ctype.h
  432. scalar.c
  433. SECURITY.md
  434. send-pack.c
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  436. sequencer.c
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  440. server-info.c
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  442. setup.c
  443. setup.h
  444. sh-i18n--envsubst.c
  445. sha1dc_git.c
  446. sha1dc_git.h
  447. shallow.c
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  450. shell.c
  451. shortlog.h
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  456. simple-ipc.h
  457. sparse-index.c
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  459. split-index.c
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  464. strbuf.c
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  466. streaming.c
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  543. ws.h
  544. wt-status.c
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  546. xdiff-interface.c
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README.md

Build status

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.adoc to get started, then see Documentation/giteveryday.adoc for a useful minimum set of commands, and Documentation/git-<commandname>.adoc 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>.

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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