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2018-04-25Merge branch 'jk/relative-directory-fix'Libravatar Junio C Hamano1-0/+1
Some codepaths, including the refs API, get and keep relative paths, that go out of sync when the process does chdir(2). The chdir-notify API is introduced to let these codepaths adjust these cached paths to the new current directory. * jk/relative-directory-fix: refs: use chdir_notify to update cached relative paths set_work_tree: use chdir_notify add chdir-notify API trace.c: export trace_setup_key set_git_dir: die when setenv() fails
2018-04-11Merge branch 'nd/combined-test-helper'Libravatar Junio C Hamano1-37/+42
Small test-helper programs have been consolidated into a single binary. * nd/combined-test-helper: (36 commits) t/helper: merge test-write-cache into test-tool t/helper: merge test-wildmatch into test-tool t/helper: merge test-urlmatch-normalization into test-tool t/helper: merge test-subprocess into test-tool t/helper: merge test-submodule-config into test-tool t/helper: merge test-string-list into test-tool t/helper: merge test-strcmp-offset into test-tool t/helper: merge test-sigchain into test-tool t/helper: merge test-sha1-array into test-tool t/helper: merge test-scrap-cache-tree into test-tool t/helper: merge test-run-command into test-tool t/helper: merge test-revision-walking into test-tool t/helper: merge test-regex into test-tool t/helper: merge test-ref-store into test-tool t/helper: merge test-read-cache into test-tool t/helper: merge test-prio-queue into test-tool t/helper: merge test-path-utils into test-tool t/helper: merge test-online-cpus into test-tool t/helper: merge test-mktemp into test-tool t/helper: merge (unused) test-mergesort into test-tool ...
2018-04-10Merge branch 'ab/install-symlinks'Libravatar Junio C Hamano1-17/+35
The build procedure learned to optionally use symbolic links (instead of hardlinks and copies) to install "git-foo" for built-in commands, whose binaries are all identical. * ab/install-symlinks: Makefile: optionally symlink libexec/git-core binaries to bin/git Makefile: add a gitexecdir_relative variable Makefile: fix broken bindir_relative variable
2018-04-10Merge branch 'ab/pcre-v2'Libravatar Junio C Hamano1-13/+13
Git can be built to use either v1 or v2 of the PCRE library, and so far, the build-time configuration USE_LIBPCRE=YesPlease instructed the build procedure to use v1, but now it means v2. USE_LIBPCRE1 and USE_LIBPCRE2 can be used to explicitly choose which version to use, as before. * ab/pcre-v2: Makefile: make USE_LIBPCRE=YesPlease mean v2, not v1 configure: detect redundant --with-libpcre & --with-libpcre1 configure: fix a regression in PCRE v1 detection
2018-03-30add chdir-notify APILibravatar Jeff King1-0/+1
If one part of the code does a permanent chdir(), then this invalidates any relative paths that may be held by other parts of the code. For example, setup_work_tree() moves us to the top of the working tree, which may invalidate a previously stored relative gitdir. We've hacked around this case by teaching setup_work_tree() to re-run set_git_dir() with an adjusted path, but this stomps all over the idea of module boundaries. setup_work_tree() shouldn't have to know all of the places that need to be fed an adjusted path. And indeed, there's at least one other place (the refs code) which needs adjusting. Let's provide an API to let code that stores relative paths "subscribe" to updates to the current working directory. This means that callers of chdir() don't need to know about all subscribers ahead of time; they can simply consult a dynamically built list. Note that our helper function to reparent relative paths uses the simple remove_leading_path(). We could in theory use the much smarter relative_path(), but that led to some problems as described in 41894ae3a3 (Use simpler relative_path when set_git_dir, 2013-10-14). Since we're aiming to replace the setup_work_tree() code here, let's follow its lead. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-write-cache into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-wildmatch into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-urlmatch-normalization into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-subprocess into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-submodule-config into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-string-list into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-strcmp-offset into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-sigchain into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-sha1-array into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-scrap-cache-tree into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-run-command into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-revision-walking into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-regex into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-ref-store into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-read-cache into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-prio-queue into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-path-utils into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-online-cpus into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-mktemp into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge (unused) test-mergesort into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge (unused) test-match-trees into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-index-version into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-hashmap into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-genrandom into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-example-decorate into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-dump-split-index into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-dump-cache-tree into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-drop-caches into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge (unused) test-delta into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-date into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-ctype into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-config into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-lazy-init-name-hash into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-sha1 into test-toolLibravatar Nguyễn Thái Ngọc Duy1-2/+2
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: merge test-chmtime into test-toolLibravatar Nguyễn Thái Ngọc Duy1-1/+2
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27t/helper: add an empty test-tool programLibravatar Nguyễn Thái Ngọc Duy1-1/+5
This will become an umbrella program that absorbs most [1] t/helper programs in. By having a single executable binary we reduce disk usage (libgit.a is replicated by every t/helper program) and shorten link time a bit. Running "make --jobs=1; du -sh t/helper" with ccache fully populated, it takes 27 seconds and 277MB at the beginning of this series, 17 seconds and 42MB at the end. [1] There are a couple programs that will not become part of test-tool: test-line-buffer and test-svn-fe have extra dependencies and test-fake-ssh's program name has to be a single word for some ssh tests. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-15Merge branch 'ab/perl-fixes'Libravatar Junio C Hamano1-1/+15
Clean-up to various pieces of Perl code we have. * ab/perl-fixes: perl Git::LoadCPAN: emit better errors under NO_PERL_CPAN_FALLBACKS Makefile: add NO_PERL_CPAN_FALLBACKS knob perl: move the perl/Git/FromCPAN tree to perl/FromCPAN perl: generalize the Git::LoadCPAN facility perl: move CPAN loader wrappers to another namespace perl: update our copy of Mail::Address perl: update our ancient copy of Error.pm git-send-email: unconditionally use Net::{SMTP,Domain} Git.pm: hard-depend on the File::{Temp,Spec} modules gitweb: hard-depend on the Digest::MD5 5.8 module Git.pm: add the "use warnings" pragma Git.pm: remove redundant "use strict" from sub-package perl: *.pm files should not have the executable bit
2018-03-15Makefile: optionally symlink libexec/git-core binaries to bin/gitLibravatar Ævar Arnfjörð Bjarmason1-15/+31
Add a INSTALL_SYMLINKS option which if enabled, changes the default hardlink installation method to one where the relevant binaries in libexec/git-core are symlinked back to ../../bin, instead of being hardlinked. This new option also overrides the behavior of the existing NO_*_HARDLINKS variables which in some cases would produce symlinks within to libexec/, e.g. "git-add" symlinked to "git" which would be copy of the "git" found in bin/, now "git-add" in libexec/ is always going to be symlinked to the "git" found in the bin/ directory. This option is being added because: 1) I think it makes what we're doing a lot more obvious. E.g. I'd never noticed that the libexec binaries were really just hardlinks since e.g. ls(1) won't show that in any obvious way. You need to start stat(1)-ing things and look at the inodes to see what's going on. 2) Some tools have very crappy support for hardlinks, e.g. the Git shipped with GitLab is much bigger than it should be because they're using a chef module that doesn't know about hardlinks, see https://github.com/chef/omnibus/issues/827 I've also ran into other related issues that I think are explained by this, e.g. compiling git with debugging and rpm refusing to install a ~200MB git package with 2GB left on the FS, I think that was because it doesn't consider hardlinks, just the sum of the byte size of everything in the package. As for the implementation, the "../../bin" noted above will vary given some given some values of "../.." and "bin" depending on the depth of the gitexecdir relative to the destdir, and the "bindir" target, e.g. setting "bindir=/tmp/git/binaries gitexecdir=foo/bar/baz" will do the right thing and produce this result: $ file /tmp/git/foo/bar/baz/git-add /tmp/git/foo/bar/baz/git-add: symbolic link to ../../../binaries/git Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-15Makefile: add a gitexecdir_relative variableLibravatar Ævar Arnfjörð Bjarmason1-0/+2
This variable will be e.g. "libexec/git-core" if gitexecdir=/tmp/git/libexec/git-core is given. It'll be used by a subsequent change. This is stolen from the yet-to-be integrated (needs resubmission) "Makefile: add Perl runtime prefix support" patch on the mailing list. See <20180108030239.92036-3-dnj@google.com> (https://public-inbox.org/git/20180108030239.92036-3-dnj@google.com/). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-15Makefile: fix broken bindir_relative variableLibravatar Ævar Arnfjörð Bjarmason1-2/+2
Change the bindir_relative variable to work like the other *_relative variables, which are computed as a function of the absolute path. Before this change, supplying e.g. bindir=/tmp/git/binaries to the Makefile would yield a bindir_relative of just "bin", as opposed to "binaries". This logic was originally added back in 026fa0d5ad ("Move computation of absolute paths from Makefile to runtime (in preparation for RUNTIME_PREFIX)", 2009-01-18), then later in 971f85388f ("Makefile: make mandir, htmldir and infodir absolute", 2013-02-24) when more *_relative variables were added those new variables didn't have this bug, but bindir_relative was never fixed. There is a small change in behavior here, which is that setting bindir_relative as an argument to the Makefile won't work anymore, I think that's fine, since this was always intended as an internal variable (e.g. INSTALL documents bindir=*, not bindir_relative=*). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14Makefile: make USE_LIBPCRE=YesPlease mean v2, not v1Libravatar Ævar Arnfjörð Bjarmason1-13/+13
Change the USE_LIBPCRE flag from being an alias for USE_LIBPCRE1 to being an alias for USE_LIBPCRE2. When support for v2 was added in my 94da9193a6 ("grep: add support for PCRE v2", 2017-06-01) the existing USE_LIBPCRE flag was left as meaning v1, with a note that this would likely change in a future release. That optional support for v2 first made it into Git version 2.14.0. The PCRE v2 support has been shown to be stable, and the upstream PCRE project is highly encouraging downstream users to move to v2, so it makes sense to give packagers of Git who haven't heard the news about PCRE v2 a further nudge to move to v2. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-06Merge branch 'ab/simplify-perl-makefile'Libravatar Junio C Hamano1-5/+7
Hotfix for a topic already in 'master'. * ab/simplify-perl-makefile: Makefile: generate Git(3pm) as dependency of the 'doc' and 'man' targets
2018-03-05perl Git::LoadCPAN: emit better errors under NO_PERL_CPAN_FALLBACKSLibravatar Ævar Arnfjörð Bjarmason1-1/+4
Before my 20d2a30f8f ("Makefile: replace perl/Makefile.PL with simple make rules", 2017-12-10) on an OS package that removed the private-Error.pm copy we carried around manually removing the OS's Error.pm would yield: $ git add -p Can't locate Error.pm in @INC (you may need to install the Error module) [...] Now, before this change we'll instead emit this more cryptic error: $ git add -p BUG: '/usr/share/perl5/Git/FromCPAN' should be a directory! at /usr/share/perl5/Git/Error.pm line 36. This is a confusing error. Now if the new NO_PERL_CPAN_FALLBACKS option is specified and we can't find the module we'll instead emit: $ /tmp/git/bin/git add -p BUG: The 'Error' module is not here, but NO_PERL_CPAN_FALLBACKS was set! [...] Where [...] is the lengthy explanation seen in the change below, which explains what the potential breakage is, and how to fix it. The reason for checking @@NO_PERL_CPAN_FALLBACKS@@] against the empty string in Perl is as opposed to checking for a boolean value is that that's (as far as I can tell) make's idea of a string that's set, and e.g. NO_PERL_CPAN_FALLBACKS=0 is enough to set NO_PERL_CPAN_FALLBACKS. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-05Makefile: add NO_PERL_CPAN_FALLBACKS knobLibravatar Todd Zullinger1-0/+8
We include some perl modules which are not part of the core perl install, as a convenience. This allows us to rely on those modules in our perl-based tools and scripts without requiring users to install the modules from CPAN or their operating system packages. Users whose operating system provides these modules and packagers of Git often don't want to ship or use these bundled modules. Allow these users to set NO_PERL_CPAN_FALLBACKS to avoid installing the bundled modules. Signed-off-by: Todd Zullinger <tmz@pobox.com> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-05perl: move the perl/Git/FromCPAN tree to perl/FromCPANLibravatar Ævar Arnfjörð Bjarmason1-0/+3
Move the CPAN modules that have lived under perl/Git/FromCPAN since my 20d2a30f8f ("Makefile: replace perl/Makefile.PL with simple make rules", 2017-12-10) to perl/FromCPAN. A subsequent change will teach the Makefile to only install these copies of CPAN modules if a flag that distro packagers would like to set isn't set. Due to how the wildcard globbing is being done it's much easier to accomplish that if they're moved to their own directory. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>