Commit Graph

2718 Commits

Author SHA1 Message Date
Junio C Hamano
23112fc28c Merge branch 'ab/make-sparse-for-real'
Fix-up for a recent topic.

* ab/make-sparse-for-real:
  Makefile: remove redundant GIT-CFLAGS dependency from "sparse"
2021-10-29 15:43:12 -07:00
Ævar Arnfjörð Bjarmason
8a7a90bc3d Makefile: remove redundant GIT-CFLAGS dependency from "sparse"
The "sparse" target needed the GIT-CFLAGS dependency before my
c234e8a0ec (Makefile: make the "sparse" target non-.PHONY,
2021-09-23), but since then it depends on the corresponding *.o files,
which in turn depend on the correct header files, as well as on
GIT-CFLAGS. There's no need to re-state this dependency here.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-21 16:19:52 -07:00
Junio C Hamano
223a1bfb58 Merge branch 'js/retire-preserve-merges'
The "--preserve-merges" option of "git rebase" has been removed.

* js/retire-preserve-merges:
  sequencer: restrict scope of a formerly public function
  rebase: remove a no-longer-used function
  rebase: stop mentioning the -p option in comments
  rebase: remove obsolete code comment
  rebase: drop the internal `rebase--interactive` command
  git-svn: drop support for `--preserve-merges`
  rebase: drop support for `--preserve-merges`
  pull: remove support for `--rebase=preserve`
  tests: stop testing `git rebase --preserve-merges`
  remote: warn about unhandled branch.<name>.rebase values
  t5520: do not use `pull.rebase=preserve`
2021-10-18 15:47:56 -07:00
Junio C Hamano
f0beebdb7b Merge branch 'ab/make-sparse-for-real'
Prevent "make sparse" from running for the source files that
haven't been modified.

* ab/make-sparse-for-real:
  Makefile: make the "sparse" target non-.PHONY
2021-10-13 15:15:58 -07:00
Junio C Hamano
a5e61a4225 Merge branch 'ab/config-based-hooks-1'
Mostly preliminary clean-up in the hook API.

* ab/config-based-hooks-1:
  hook-list.h: add a generated list of hooks, like config-list.h
  hook.c users: use "hook_exists()" instead of "find_hook()"
  hook.c: add a hook_exists() wrapper and use it in bugreport.c
  hook.[ch]: move find_hook() from run-command.c to hook.c
  Makefile: remove an out-of-date comment
  Makefile: don't perform "mv $@+ $@" dance for $(GENERATED_H)
  Makefile: stop hardcoding {command,config}-list.h
  Makefile: mark "check" target as .PHONY
2021-10-13 15:15:57 -07:00
Junio C Hamano
859a585bdf Merge branch 'ab/sanitize-leak-ci'
CI learns to run the leak sanitizer builds.

* ab/sanitize-leak-ci:
  tests: add a test mode for SANITIZE=leak, run it in CI
  Makefile: add SANITIZE=leak flag to GIT-BUILD-OPTIONS
2021-10-11 10:21:47 -07:00
Junio C Hamano
93cccedb8f Merge branch 'ab/make-compdb-fix'
Build update.

* ab/make-compdb-fix:
  Makefile: pass -Wno-pendantic under GENERATE_COMPILATION_DATABASE=yes
2021-10-03 21:49:21 -07:00
Junio C Hamano
65351024eb Merge branch 'ab/auto-depend-with-pedantic'
Improve build procedure for developers.

* ab/auto-depend-with-pedantic:
  Makefile: make COMPUTE_HEADER_DEPENDENCIES=auto work with DEVOPTS=pedantic
2021-10-03 21:49:20 -07:00
Junio C Hamano
2498121cd6 Merge branch 'ab/make-clean-depend-dirs'
"make clean" has been updated to remove leftover .depend/
directories, even when it is not told to use them to compute header
dependencies.

* ab/make-clean-depend-dirs:
  Makefile: clean .depend dirs under COMPUTE_HEADER_DEPENDENCIES != yes
2021-10-03 21:49:19 -07:00
Ævar Arnfjörð Bjarmason
dd20e4a6db Makefile: pass -Wno-pendantic under GENERATE_COMPILATION_DATABASE=yes
The same bug fixed in the "COMPUTE_HEADER_DEPENDENCIES=auto" mode in
the preceding commit was also present with
"GENERATE_COMPILATION_DATABASE=yes". Let's fix it so it works again
with "DEVOPTS=1".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-27 13:54:02 -07:00
Ævar Arnfjörð Bjarmason
cfe853e66b hook-list.h: add a generated list of hooks, like config-list.h
Make githooks(5) the source of truth for what hooks git supports, and
punt out early on hooks we don't know about in find_hook(). This
ensures that the documentation and the C code's idea about existing
hooks doesn't diverge.

We still have Perl and Python code running its own hooks, but that'll
be addressed by Emily Shaffer's upcoming "git hook run" command.

This resolves a long-standing TODO item in bugreport.c of there being
no centralized listing of hooks, and fixes a bug with the bugreport
listing only knowing about 1/4 of the p4 hooks. It didn't know about
the recent "reference-transaction" hook either.

We could make the find_hook() function die() or BUG() out if the new
known_hook() returned 0, but let's make it return NULL just as it does
when it can't find a hook of a known type. Making it die() is overly
anal, and unlikely to be what we need in catching stupid typos in the
name of some new hook hardcoded in git.git's sources. By making this
be tolerant of unknown hook names, changes in a later series to make
"git hook run" run arbitrary user-configured hook names will be easier
to implement.

I have not been able to directly test the CMake change being made
here. Since 4c2c38e800 (ci: modification of main.yml to use cmake for
vs-build job, 2020-06-26) some of the Windows CI has a hard dependency
on CMake, this change works there, and is to my eyes an obviously
correct use of a pattern established in previous CMake changes,
namely:

 - 061c2240b1 (Introduce CMake support for configuring Git,
    2020-06-12)
 - 709df95b78 (help: move list_config_help to builtin/help,
    2020-04-16)
 - 976aaedca0 (msvc: add a Makefile target to pre-generate the Visual
   Studio solution, 2019-07-29)

The LC_ALL=C is needed because at least in my locale the dash ("-") is
ignored for the purposes of sorting, which results in a different
order. I'm not aware of anything in git that has a hard dependency on
the order, but e.g. the bugreport output would end up using whatever
locale was in effect when git was compiled.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Helped-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-27 09:44:54 -07:00
Ævar Arnfjörð Bjarmason
5e3aba33da hook.[ch]: move find_hook() from run-command.c to hook.c
Move the find_hook() function from run-command.c to a new hook.c
library. This change establishes a stub library that's pretty
pointless right now, but will see much wider use with Emily Shaffer's
upcoming "configuration-based hooks" series.

Eventually all the hook related code will live in hook.[ch]. Let's
start that process by moving the simple find_hook() function over
as-is.

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-27 09:44:54 -07:00
Ævar Arnfjörð Bjarmason
f53df0bdf6 Makefile: remove an out-of-date comment
This comment added in dfea575017 (Makefile: lazily compute header
dependencies, 2010-01-26) has been out of date since
92b88eba9f (Makefile: use `git ls-files` to list header files, if
possible, 2019-03-04), when we did exactly what it tells us not to do
and added $(GENERATED_H) to $(OBJECTS) dependencies.

The rest of it was also somewhere between inaccurate and outdated,
since as of b8ba629264 (Makefile: fold MISC_H into LIB_H, 2012-06-20)
it's not followed by a list of header files, that got moved earlier in
the file into LIB_H in 60d24dd255 (Makefile: fold XDIFF_H and VCSSVN_H
into LIB_H, 2012-07-06).

Let's just remove it entirely, to the extent that we have anything
useful to say here the comment on the
"USE_COMPUTED_HEADER_DEPENDENCIES" variable a few lines above this
change does the job for us.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23 15:06:47 -07:00
Ævar Arnfjörð Bjarmason
7c81295382 Makefile: don't perform "mv $@+ $@" dance for $(GENERATED_H)
Change the "cmd.sh > $@+ && mv $@+ $@" pattern used for generating the
config-list.h and command-list.h to just "cmd.sh >$@". This was needed
as a guard to ensure that we don't have an empty file if the script
failed, but since 7b76d6bf22 (Makefile: add and use the
".DELETE_ON_ERROR" flag, 2021-06-29) GNU make ensures that doesn't
happen.

There's still a lot of other places in the Makefile where we
needlessly use this pattern, but I'm just changing these because I'm
about to add a new $(GENERATED_H) target, let's have them all look and
act the same way.

Even with ".DELETE_ON_ERROR" there is still a point to using the "mv
$@+ $@" pattern in some cases, e.g. to ensure that you have a working
binary during recompilation (see [1] for the start of a long
discussion about that), but that doesn't apply here. Nothing external
uses $(GENERATED_H) directly, it's only ever used in the context of
the Makefile's own dependency (re-)generation.

1. https://lore.kernel.org/git/8735t93h0u.fsf@evledraar.gmail.com/

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23 15:06:47 -07:00
Ævar Arnfjörð Bjarmason
7c3c0a99cc Makefile: stop hardcoding {command,config}-list.h
Change various places that hardcode the names of these two files to
refer to either $(GENERATED_H), or to a new generated-hdrs
target. That target is consistent with the *-objs targets I recently
added in 029bac01a8 (Makefile: add {program,xdiff,test,git,fuzz}-objs
& objects targets, 2021-02-23).

A subsequent commit will add a new generated hook-list.h. By doing
this refactoring we'll only need to add the new file to the
GENERATED_H variable, not EXCEPT_HDRS, the vcbuild/README etc.

Hardcoding command-list.h there seems to have been a case of
copy/paste programming in 976aaedca0 (msvc: add a Makefile target to
pre-generate the Visual Studio solution, 2019-07-29). The
config-list.h was added later in 709df95b78 (help: move
list_config_help to builtin/help, 2020-04-16).

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23 15:06:47 -07:00
Ævar Arnfjörð Bjarmason
ea47e59fe3 Makefile: mark "check" target as .PHONY
Fix a bug in 44c9e8594e (Fix up header file dependencies and add
sparse checking rules, 2005-07-03), we never marked the phony "check"
target as such.

Perhaps we should just remove it, since as of a combination of
912f9980d2 (Makefile: help people who run 'make check' by mistake,
2008-11-11) 0bcd9ae85d (sparse: Fix errors due to missing
target-specific variables, 2011-04-21) we've been suggesting the user
run "make sparse" directly.

But under that mode it still does something, as well as directing the
user to run "make test" under non-sparse. So let's punt that and
narrowly fix the PHONY bug.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23 15:06:47 -07:00
Junio C Hamano
8f79fb6445 Merge branch 'ab/http-drop-old-curl-plus'
Conditional compilation around versions of libcURL has been
straightened out.

* ab/http-drop-old-curl-plus:
  http: don't hardcode the value of CURL_SOCKOPT_OK
  http: centralize the accounting of libcurl dependencies
  http: correct curl version check for CURLOPT_PINNEDPUBLICKEY
  http: correct version check for CURL_HTTP_VERSION_2
  http: drop support for curl < 7.18.0 (again)
  Makefile: drop support for curl < 7.9.8 (again)
  INSTALL: mention that we need libcurl 7.19.4 or newer to build
  INSTALL: reword and copy-edit the "libcurl" section
  INSTALL: don't mention the "curl" executable at all
2021-09-23 13:44:47 -07:00
Ævar Arnfjörð Bjarmason
2cdc292b31 Makefile: add SANITIZE=leak flag to GIT-BUILD-OPTIONS
When SANITIZE=leak is specified we'll now add a SANITIZE_LEAK flag to
GIT-BUILD-OPTIONS, this can then be picked up by the test-lib.sh,
which sets a SANITIZE_LEAK prerequisite.

We can then skip specific tests that are known to fail under
SANITIZE=leak, add one such annotation to t0004-unwritable.sh, which
now passes under SANITIZE=leak.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23 11:29:45 -07:00
Ævar Arnfjörð Bjarmason
731b6859c4 Makefile: make COMPUTE_HEADER_DEPENDENCIES=auto work with DEVOPTS=pedantic
The "COMPUTE_HEADER_DEPENDENCIES" feature added in [1] was extended to
use auto-detection in [2], that "auto" detection has always piped
STDERR to /dev/null, so any failures on compilers that didn't support
these GCC flags would silently fall back to
"COMPUTE_HEADER_DEPENDENCIES=no".

Later when -Wpedantic support was added to DEVOPTS in [3] we started
passing -Wpedantic in combination with -Werror to the compiler
here. Note (to the pedantic): [3] actually passed "-pedantic", but it
and "-Wpedantic" are synonyms.

Turning on -Wpedantic in [3] broke the auto-detection, since this
relies on compiling an empty program. GCC would loudly complain on
STDERR:

    /dev/null:1: error: ISO C forbids an empty translation unit
    [-Werror=pedantic]
    cc1: note: unrecognized command-line option
    ‘-Wno-pedantic-ms-format’ may have been intended to silence
    earlier diagnostics
    cc1: all warnings being treated as errors

But as that ended up in the "$(dep_check)" variable due to the "2>&1"
in [2] we didn't see it.

Then when [4] made DEVOPTS=pedantic the default specifying
"DEVELOPER=1" would effectively set "COMPUTE_HEADER_DEPENDENCIES=no".

To fix these issues let's unconditionally pass -Wno-pedantic after
$(ALL_CFLAGS), we might get a -Wpedantic via config.mak.dev after, or
the builder might specify it via CFLAGS. In either case this will undo
current and future problems with -Wpedantic.

I think it would make sense to simply remove the "2>&1", it would mean
that anyone using a non-GCC-like compiler would get warnings under
COMPUTE_HEADER_DEPENDENCIES=auto, e.g on AIX's xlc would emit:

    /opt/IBM/xlc/13.1.3/bin/.orig/xlc: 1501-208 (S) command option D is missing a subargument
    Non-zero 40 exit with COMPUTE_HEADER_DEPENDENCIES=auto, set it to "yes" or "no" to quiet auto-detect

And on Solaris with SunCC:

    cc: Warning: Option -x passed to ld, if ld is invoked, ignored otherwise
    cc: refused to overwrite input file by output file: /dev/null
    cc: Warning: Option -x passed to ld, if ld is invoked, ignored otherwise
    cc: refused to overwrite input file by output file: /dev/null
    Non-zero 1 exit with COMPUTE_HEADER_DEPENDENCIES=auto, set it to "yes" or "no" to quiet auto-detect

Both could be quieted by setting COMPUTE_HEADER_DEPENDENCIES=no
explicitly, as suggested, but let's see if this'll fix it without
emitting too much noise at those that aren't using "gcc" or "clang".

1. f2fabbf76e (Teach Makefile to check header dependencies,
   2010-01-26)
2. 111ee18c31 (Makefile: Use computed header dependencies if the
   compiler supports it, 2011-08-18)
3. 729b3925ed (Makefile: add a DEVOPTS flag to get pedantic
   compilation, 2018-07-24)
4. 6a8cbc41ba (developer: enable pedantic by default, 2021-09-03)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-22 21:38:57 -07:00
Ævar Arnfjörð Bjarmason
c234e8a0ec Makefile: make the "sparse" target non-.PHONY
Change the "sparse" target and its *.sp dependencies to be
non-.PHONY. Before this change "make sparse" would take ~5s to re-run
all the *.c files through "cgcc", after it it'll create an empty *.sp
file sitting alongside the *.c file, only if the *.c file or its
dependencies are newer than the *.sp is the *.sp re-made.

We ensure that the recursive dependencies are correct by depending on
the *.o file, which in turn will have correct dependencies by either
depending on all header files, or under
"COMPUTE_HEADER_DEPENDENCIES=yes" the headers it needs.

This means that a plain "make sparse" is much slower, as we'll now
need to make the *.o files just to create the *.sp files, but
incrementally creating the *.sp files is *much* faster and less
verbose, it thus becomes viable to run "sparse" along with "all" as
e.g. "git rebase --exec 'make all sparse'".

On my box with -j8 "make sparse" was fast before, or around 5 seconds,
now it only takes that long the first time, and the common case is
<100ms, or however long it takes GNU make to stat the *.sp file and
see that all the corresponding *.c file and its dependencies are
older.

See 0bcd9ae85d (sparse: Fix errors due to missing target-specific
variables, 2011-04-21) for the modern implementation of the sparse
target being changed here.

It is critical that we use -Wsparse-error here, otherwise the error
would only show up once, but we'd successfully create the empty *.sp
file, and running a second time wouldn't show the error. I'm therefore
not putting it into SPARSE_FLAGS or SP_EXTRA_FLAGS, it's not optional,
the Makefile logic won't behave properly without it.

Appending to $@ without a move is OK here because we're using the
.DELETE_ON_ERROR Makefile feature. See 7b76d6bf22 (Makefile: add and
use the ".DELETE_ON_ERROR" flag, 2021-06-29). GNU make ensures that on
error this file will be removed.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-22 21:36:11 -07:00
Ævar Arnfjörð Bjarmason
f0a74bcb03 Makefile: clean .depend dirs under COMPUTE_HEADER_DEPENDENCIES != yes
Fix a logic error in dfea575017 (Makefile: lazily compute header
dependencies, 2010-01-26) where we'd make whether we cleaned the
.depend dirs contingent on the currently configured
COMPUTE_HEADER_DEPENDENCIES value. Before this running e.g.:

    make COMPUTE_HEADER_DEPENDENCIES=yes grep.o
    make COMPUTE_HEADER_DEPENDENCIES=no clean

Would leave behind the .depend directory, now it'll be removed.

Normally we'd need to use another variable, but in this case there's
no other uses of $(dep_dirs), as opposed to $(dep_args) which is used
as an argument to $(CC). So just deleting this line makes everything
work correctly.

See http://lore.kernel.org/git/xmqqmto48ufz.fsf@gitster.g for a report
about this issue.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-22 13:34:34 -07:00
Junio C Hamano
1b8bd2243e Merge branch 'ab/make-tags-cleanup'
Build clean-up for "make tags" and friends.

* ab/make-tags-cleanup:
  Makefile: normalize clobbering & xargs for tags targets
  Makefile: remove "cscope.out", not "cscope*" in cscope.out target
  Makefile: don't use "FORCE" for tags targets
  Makefile: add QUIET_GEN to "cscope" target
  Makefile: move ".PHONY: cscope" near its target
2021-09-20 15:20:43 -07:00
Junio C Hamano
403192acb6 Merge branch 'cb/pedantic-build-for-developers'
Update the build procedure to use the "-pedantic" build when
DEVELOPER makefile macro is in effect.

* cb/pedantic-build-for-developers:
  developer: enable pedantic by default
  win32: allow building with pedantic mode enabled
  gettext: remove optional non-standard parens in N_() definition
2021-09-20 15:20:41 -07:00
Junio C Hamano
5639a8d144 Merge branch 'bs/install-strip'
"make INSTALL_STRIP=-s install" allows the installation step to use
"install -s" to strip the binaries as they get installed.

* bs/install-strip:
  make: add INSTALL_STRIP option variable
2021-09-15 13:15:26 -07:00
Junio C Hamano
59a29d1644 Merge branch 'ab/no-more-check-bindir'
Build simplification.

* ab/no-more-check-bindir:
  Makefile: remove the check_bindir script
2021-09-15 13:15:25 -07:00
Ævar Arnfjörð Bjarmason
2d4032c2fb Makefile: drop support for curl < 7.9.8 (again)
In 1119a15b5c (http: drop support for curl < 7.11.1, 2021-07-30)
support for curl versions older than 7.11.1 was removed, and we
currently require at least version 7.19.4, see 644de29e22 (http: drop
support for curl < 7.19.4, 2021-07-30).

In those changes this Makefile-specific check added in
0890098780 (Decide whether to build http-push in the Makefile,
2005-11-18) was missed, now that we're never going to use such an
ancient curl version we don't need to check that we have at least
7.9.8 here. I have no idea what in http-push.c broke on versions older
than that.

This does not impact "NO_CURL" setups, as this is in the "else" branch
after that check.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-13 10:39:04 -07:00
Johannes Schindelin
a74b35081c rebase: drop support for --preserve-merges
This option was deprecated in favor of `--rebase-merges` some time ago,
and now we retire it.

To assist users to transition away, we do not _actually_ remove the
option, but now we no longer implement the functionality. Instead, we
offer a helpful error message suggesting which option to use.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07 21:45:33 -07:00
Ævar Arnfjörð Bjarmason
72b113e562 Makefile: remove the check_bindir script
This script was added in f28ac70f48 (Move all dashed-form commands to
libexecdir, 2007-11-28) when commands such as "git-add" lived in the
bin directory, instead of the git exec directory.

This notice helped someone incorrectly installing version v1.6.0 and
later into a directory built for a pre-v1.6.0 git version.

We're now long past the point where anyone who'd be helped by this
warning is likely to be doing that, so let's just remove this check
and warning to simplify the Makefile.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07 13:27:40 -07:00
Bagas Sanjaya
3231f41009 make: add INSTALL_STRIP option variable
Add $(INSTALL_STRIP), which allows passing stripping options to
$(INSTALL).

For this to work, installing executables must be split to installing
compiled binaries and scripts portions, since $(INSTALL_STRIP) is only
meaningful to the former.

Users can set this variable depending on their system. For example,
Linux users can use `-s --strip-program=strip`, while FreeBSD users can
simply set to `-s` and choose strip program with $STRIPBIN.

[original outline by Đoàn Trần Công Danh]

Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-05 23:49:41 -07:00
Junio C Hamano
d868e4d9ee Merge branch 'sg/make-fix-ar-invocation'
Build fix.

* sg/make-fix-ar-invocation:
  Makefile: remove archives before manipulating them with 'ar'
2021-09-03 13:49:30 -07:00
Carlo Marcelo Arenas Belón
6a8cbc41ba developer: enable pedantic by default
With the codebase firmly C99 compatible and most compilers supporting
newer versions by default, it could help bring visibility to problems.

Reverse the DEVOPTS=pedantic flag to provide a fallback for people stuck
with gcc < 5 or some other compiler that either doesn't support this flag
or has issues with it, and while at it also enable -Wpedantic which used
to be controversial[1] when Apple compilers and clang had widely divergent
version numbers.

Ideally any compiler found to have issues with these flags will be added
to an exception, and indeed, one was added to safely process windows
headers that would use non standard print identifiers, but it is expected
that more will be needed, so it could be considered a weather balloon.

[1] https://lore.kernel.org/git/20181127100557.53891-1-carenas@gmail.com/

Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-03 11:40:30 -07:00
Ævar Arnfjörð Bjarmason
153fb49e60 gettext: remove optional non-standard parens in N_() definition
Remove the USE_PARENS_AROUND_GETTEXT_N compile-time option which was
meant to catch an inadvertent mistake which is too obscure to
maintain this facility.

The backstory of how USE_PARENS_AROUND_GETTEXT_N came about is: When I
added the N_() macro in 6578483036 (i18n: add no-op _() and N_()
wrappers, 2011-02-22) it was defined as:

    #define N_(msgid) (msgid)

This is non-standard C, as was noticed and fixed in 642f85faab (i18n:
avoid parenthesized string as array initializer, 2011-04-07).
I.e. this needed to be defined as:

    #define N_(msgid) msgid

Then in e62cd35a3e (i18n: log: mark parseopt strings for translation,
2012-08-20) when "builtin_log_usage" was marked for translation the
string concatenation for passing to usage() added in 1c370ea4e5
(Show usage string for 'git log -h', 'git show -h' and 'git diff -h',
2009-08-06) was faithfully preserved:

-       "git log [<options>] [<since>..<until>] [[--] <path>...]\n"
-       "   or: git show [options] <object>...",
+       N_("git log [<options>] [<since>..<until>] [[--] <path>...]\n")
+       N_("   or: git show [options] <object>..."),

This was then fixed to be the expected array of usage strings in
e66dc0cc4b (log.c: fix translation markings, 2015-01-06) rather than
a string with multiple "\n"-delimited usage strings, and finally in
290c8e7a3f (gettext.h: add parentheses around N_ expansion if
supported, 2015-01-11) USE_PARENS_AROUND_GETTEXT_N was added to ensure
this mistake didn't happen again.

I think that even if this was a N_()-specific issue this
USE_PARENS_AROUND_GETTEXT_N facility wouldn't be worth it, the issue
would be too rare to worry about.

But I also think that 290c8e7a3f which introduced
USE_PARENS_AROUND_GETTEXT_N misattributed the problem. The issue
wasn't with the N_() macro added in e62cd35a3e, but that before the
N_() macro existed in the codebase the initial migration to
parse_options() in 1c370ea4e5 continued passsing in a "\n"-delimited
string, when the new API it was migrating to supported and expected
the passing of an array.

Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-03 11:40:30 -07:00
Junio C Hamano
6f64eeab60 Merge branch 'es/trace2-log-parent-process-name'
trace2 logs learned to show parent process name to see in what
context Git was invoked.

* es/trace2-log-parent-process-name:
  tr2: log parent process name
  tr2: make process info collection platform-generic
2021-08-24 15:32:40 -07:00
Junio C Hamano
aab0eeaba5 Merge branch 'js/expand-runtime-prefix'
Pathname expansion (like "~username/") learned a way to specify a
location relative to Git installation (e.g. its $sharedir which is
$(prefix)/share), with "%(prefix)".

* js/expand-runtime-prefix:
  expand_user_path: allow in-flight topics to keep using the old name
  interpolate_path(): allow specifying paths relative to the runtime prefix
  Use a better name for the function interpolating paths
  expand_user_path(): clarify the role of the `real_home` parameter
  expand_user_path(): remove stale part of the comment
  tests: exercise the RUNTIME_PREFIX feature
2021-08-24 15:32:38 -07:00
SZEDER Gábor
325b06deda Makefile: remove archives before manipulating them with 'ar'
The rules creating the $(LIB_FILE) and $(XDIFF_LIB) archives used to
be:

  $(QUIET_AR)$(RM) $@ && $(AR) $(ARFLAGS) $@ $^

until commit 7b76d6bf22 (Makefile: add and use the ".DELETE_ON_ERROR"
flag, 2021-06-29) removed the '$(RM) $@' part, claiming that "we can
rely on the "c" (create) being present in ARFLAGS", and (I presume)
assuming that it means that the named archive is created from scratch.

Unfortunately, that's not what the 'c' flag does, it merely "Suppress
the diagnostic message that is written to standard error by default
when the archive is created" [1].  Consequently, all object files that
are already present in an existing archive and are not replaced will
remain there.  This leads to linker errors in back-to-back builds of
different revisions without a 'make clean' between them if source
files going into these archives are renamed in between:

  # The last commit renaming files that go into 'libgit.a':
  # bc62692757 (hash-lookup: rename from sha1-lookup, 2020-12-31)
  #  sha1-lookup.c => hash-lookup.c | 14 +++++++-------
  #  sha1-lookup.h => hash-lookup.h | 12 ++++++------
  $ git checkout bc62692757^
  HEAD is now at 7a7d992d0d sha1-lookup: rename `sha1_pos()` as `hash_pos()`
  $ make
  [...]
  $ git checkout 7b76d6bf22
  HEAD is now at 7b76d6bf22 Makefile: add and use the ".DELETE_ON_ERROR" flag
  $ make
  [...]
      AR libgit.a
      LINK git
  /usr/bin/ld: libgit.a(hash-lookup.o): in function `bsearch_hash':
  /home/szeder/src/git/hash-lookup.c:105: multiple definition of `bsearch_hash'; libgit.a(sha1-lookup.o):/home/szeder/src/git/sha1-lookup.c:105: first defined here
  collect2: error: ld returned 1 exit status
  make: *** [Makefile:2213: git] Error 1

Restore the original make rules to first remove $(LIB_FILE) and
$(XDIFF_LIB) and then create them from scratch to avoid these build
errors.

[1] Quoting POSIX at:
    https://pubs.opengroup.org/onlinepubs/9699919799/utilities/ar.html

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-19 16:44:32 -07:00
Ævar Arnfjörð Bjarmason
899062438f Makefile: normalize clobbering & xargs for tags targets
Since the "tags", "TAGS" and "cscope.out" targets rely on piping into
xargs with an "echo <list> | xargs" pattern, we need to make sure
we're in an append mode.

Unlike my recent change to make use of ".DELETE_ON_ERROR" in
7b76d6bf22 (Makefile: add and use the ".DELETE_ON_ERROR" flag,
2021-06-29), we really do need the "rm $@+" at the beginning (note,
not "rm $@").

This is because the xargs command may decide to invoke the program
multiple times. We need to make sure we've got a union of its results
at the end.

For "ctags" and "etags" we used the "-a" flag for this, for cscope
that behavior is the default. Its "-u" flag disables its equivalent of
an implicit "-a" flag.

Let's also consistently use the $@ and $@+ names instead of needlessly
hardcoding or referring to more verbose names in the "tags" and "TAGS"
rules.

These targets could perhaps be improved in the future by factoring
this "echo <list> | xargs" pattern so that we make intermediate tags
files for each source file, and then assemble them into one "tags"
file at the end.

The etags manual page suggests that doing that (or perhaps just
--update) might be counter-productive, in any case, the tag building
is fast enough for me, so I'm leaving that for now.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-05 09:31:15 -07:00
Ævar Arnfjörð Bjarmason
530a446d4a Makefile: remove "cscope.out", not "cscope*" in cscope.out target
Before we generate a "cscope.out" file, remove that file explicitly,
and not everything matching "cscope*". This doesn't change any
behavior of the Makefile in practice, but makes this rule less
confusing, and consistent with other similar rules.

The cscope target was added in a2a9150bf0 (makefile: Add a cscope
target, 2007-10-06). It has always referred to cscope* instead of to
cscope.out in .gitignore and the "clean" target, even though we only
ever generated a cscope.out file.

This was seemingly done to aid use-cases where someone invoked cscope
with the "-q" flag, which would make it create a "cscope.in.out" and
"cscope.po.out" files in addition to "cscope.out".

But us removing those files we never generated is confusing, so let's
only remove the file we need to, furthermore let's use the "-f" flag
to explicitly name the cscope.out file, even though it's the default
if not "-f" argument is supplied.

It is somewhat inconsistent to change from the glob here but not in
the "clean" rule and .gitignore, an earlier version of this change
updated those as well, but see [1][2] for why they were kept.

1. https://lore.kernel.org/git/87k0lit57x.fsf@evledraar.gmail.com/
2. https://lore.kernel.org/git/87im0kn983.fsf@evledraar.gmail.com/

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-05 09:31:15 -07:00
Junio C Hamano
fea3738ac5 Merge branch 'ab/getcwd-test'
Portability test update.

* ab/getcwd-test:
  t0001: fix broken not-quite getcwd(3) test in bed67874e2
2021-08-04 13:28:55 -07:00
Ævar Arnfjörð Bjarmason
482e1488a9 t0001: fix broken not-quite getcwd(3) test in bed67874e2
With a54e938e5b (strbuf: support long paths w/o read rights in
strbuf_getcwd() on FreeBSD, 2017-03-26) we had t0001 break on systems
like OpenBSD and AIX whose getcwd(3) has standard (but not like glibc
et al) behavior.

This was partially fixed in bed67874e2 (t0001: skip test with
restrictive permissions if getpwd(3) respects them, 2017-08-07).

The problem with that fix is that while its analysis of the problem is
correct, it doesn't actually call getcwd(3), instead it invokes "pwd
-P". There is no guarantee that "pwd -P" is going to call getcwd(3),
as opposed to e.g. being a shell built-in.

On AIX under both bash and ksh this test breaks because "pwd -P" will
happily display the current working directory, but getcwd(3) called by
the "git init" we're testing here will fail to get it.

I checked whether clobbering the $PWD environment variable would
affect it, and it didn't. Presumably these shells keep track of their
working directory internally.

There's possible follow-up work here in teaching strbuf_getcwd() to
get the working directory with whatever method "pwd" uses on these
platforms. See [1] for a discussion of that, but let's take the easy
way out here and just skip these tests by fixing the
GETCWD_IGNORES_PERMS prerequisite to match the limitations of
strbuf_getcwd().

1. https://lore.kernel.org/git/b650bef5-d739-d98d-e9f1-fa292b6ce982@web.de/

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-30 10:18:27 -07:00
Junio C Hamano
e5cc59c77c Merge branch 'ew/many-alternate-optim'
Optimization for repositories with many alternate object store.

* ew/many-alternate-optim:
  oidtree: a crit-bit tree for odb_loose_cache
  oidcpy_with_padding: constify `src' arg
  make object_directory.loose_objects_subdir_seen a bitmap
  avoid strlen via strbuf_addstr in link_alt_odb_entry
  speed up alt_odb_usable() with many alternates
2021-07-28 13:17:57 -07:00
Johannes Schindelin
b7d11a0f5d tests: exercise the RUNTIME_PREFIX feature
Originally, we refrained from adding a regression test in 7b6c6496374
(system_path(): Add prefix computation at runtime if RUNTIME_PREFIX set,
2008-08-10), and in 226c0ddd0d (exec_cmd: RUNTIME_PREFIX on some POSIX
systems, 2018-04-10).

The reason was that it was deemed too tricky to test.

Turns out that it is not tricky to test at all: we simply create a
pseudo-root, copy the `git` executable into the `git/` subdirectory of
that pseudo-root, then copy a script into the `libexec/git-core/`
directory and expect that to be picked up.

As long as the trash directory is in a location where binaries can be
executed, this works.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-26 12:17:16 -07:00
Emily Shaffer
b7e6a41622 tr2: make process info collection platform-generic
To pave the way for non-Windows platforms to define
trace2_collect_process_info(), reorganize the stub-or-definition schema
to something which doesn't directly reference Windows.

Platforms which want to collect parent process information in the
future should:

 1. Add an implementation to compat/ (e.g. compat/somearch/procinfo.c)
 2. Add that object to COMPAT_OBJS to config.mak.uname
    (e.g. COMPAT_OBJS += compat/somearch/procinfo.o)
 3. Define HAVE_PLATFORM_PROCINFO in config.mak.uname

In the Windows case, this definition lives in
compat/win32/trace2_win32_process_info.c, which is already conditionally
added to COMPAT_OBJS; so let's add HAVE_PLATFORM_PROCINFO to hint to the
build that compat/stub/procinfo.c should not be used.

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-22 13:35:20 -07:00
Junio C Hamano
dae59cb263 Merge branch 'js/ci-windows-update'
GitHub Actions / CI update.

* js/ci-windows-update:
  ci: accelerate the checkout
  ci (vs-build): build with NO_GETTEXT
  artifacts-tar: respect NO_GETTEXT
  ci (windows): transfer also the Git-tracked files to the test jobs
  ci: upgrade to using actions/{up,down}load-artifacts v2
  ci (vs-build): use `cmd` to copy the DLLs, not `powershell`
  ci: use the new GitHub Action to download git-sdk-64-minimal
2021-07-22 13:05:55 -07:00
Ævar Arnfjörð Bjarmason
7171221d82 Makefile: don't use "FORCE" for tags targets
Remove the "FORCE" dependency from the "tags", "TAGS" and "cscope"
targets, instead make them depend on whether or not the relevant
source files have changed.

For the cscope target we need to change it to depend on the actual
generated file while we generate while we're at it, as the next commit
will discuss we always generate a cscope.out file.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-22 09:29:24 -07:00
Junio C Hamano
8721e2eaed Merge branch 'jt/partial-clone-submodule-1'
Prepare the internals for lazily fetching objects in submodules
from their promisor remotes.

* jt/partial-clone-submodule-1:
  promisor-remote: teach lazy-fetch in any repo
  run-command: refactor subprocess env preparation
  submodule: refrain from filtering GIT_CONFIG_COUNT
  promisor-remote: support per-repository config
  repository: move global r_f_p_c to repo struct
2021-07-16 17:42:53 -07:00
Junio C Hamano
368cab75c1 Merge branch 'ab/make-delete-on-error'
Use ".DELETE_ON_ERROR" pseudo target to simplify our Makefile.

* ab/make-delete-on-error:
  Makefile: add and use the ".DELETE_ON_ERROR" flag
2021-07-16 17:42:47 -07:00
Junio C Hamano
0800bedcc7 Merge branch 'dd/svn-test-wo-locale-a'
"git-svn" tests assumed that "locale -a", which is used to pick an
available UTF-8 locale, is available everywhere.  A knob has been
introduced to allow testers to specify a suitable locale to use.

* dd/svn-test-wo-locale-a:
  t: use user-specified utf-8 locale for testing svn
2021-07-08 13:14:58 -07:00
Eric Wong
92d8ed8ac1 oidtree: a crit-bit tree for odb_loose_cache
This saves 8K per `struct object_directory', meaning it saves
around 800MB in my case involving 100K alternates (half or more
of those alternates are unlikely to hold loose objects).

This is implemented in two parts: a generic, allocation-free
`cbtree' and the `oidtree' wrapper on top of it.  The latter
provides allocation using alloc_state as a memory pool to
improve locality and reduce free(3) overhead.

Unlike oid-array, the crit-bit tree does not require sorting.
Performance is bound by the key length, for oidtree that is
fixed at sizeof(struct object_id).  There's no need to have
256 oidtrees to mitigate the O(n log n) overhead like we did
with oid-array.

Being a prefix trie, it is natively suited for expanding short
object IDs via prefix-limited iteration in
`find_short_object_filename'.

On my busy workstation, p4205 performance seems to be roughly
unchanged (+/-8%).  Startup with 100K total alternates with no
loose objects seems around 10-20% faster on a hot cache.
(800MB in memory savings means more memory for the kernel FS
cache).

The generic cbtree implementation does impose some extra
overhead for oidtree in that it uses memcmp(3) on
"struct object_id" so it wastes cycles comparing 12 extra bytes
on SHA-1 repositories.  I've not yet explored reducing this
overhead, but I expect there are many places in our code base
where we'd want to investigate this.

More information on crit-bit trees: https://cr.yp.to/critbit.html

Signed-off-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-07 21:28:04 -07:00
Johannes Schindelin
4348824059 artifacts-tar: respect NO_GETTEXT
We obviously do not want to bundle `.mo` files during `make
artifacts-tar NO_GETTEXT=Yep`, but that was the case.

To fix that, go a step beyond just fixing the symptom, and simply
define the lists of `.po` and `.mo` files as empty if `NO_GETTEXT` is
set.

Helped-by: Matthias Aßhauer <mha1993@live.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-06 12:20:58 -07:00
Ævar Arnfjörð Bjarmason
033395be32 Makefile: add QUIET_GEN to "cscope" target
Don't show the very verbose $(FIND_SOURCE_FILES) command on every
"make cscope" invocation.

See my recent 3c80fcb591 (Makefile: add QUIET_GEN to "tags" and "TAGS"
targets, 2021-03-28) for the same fix for the other adjacent targets.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-06-29 13:04:00 -07:00