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2022-04-06configure.ac: fix HAVE_SYNC_FILE_RANGE definitionLibravatar Adam Dinwoodie1-1/+1
If sync_file_range is not available when building the configure script, there is a cosmetic bug when running that script reporting "HAVE_SYNC_FILE_RANGE: command not found". Remove that error message by defining HAVE_SYNC_FILE_RANGE to an empty string, rather than generating a script where that appears as a bare command. Signed-off-by: Adam Dinwoodie <adam@dinwoodie.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-10core.fsyncmethod: add writeout-only modeLibravatar Neeraj Singh1-0/+8
This commit introduces the `core.fsyncMethod` configuration knob, which can currently be set to `fsync` or `writeout-only`. The new writeout-only mode attempts to tell the operating system to flush its in-memory page cache to the storage hardware without issuing a CACHE_FLUSH command to the storage controller. Writeout-only fsync is significantly faster than a vanilla fsync on common hardware, since data is written to a disk-side cache rather than all the way to a durable medium. Later changes in this patch series will take advantage of this primitive to implement batching of hardware flushes. When git_fsync is called with FSYNC_WRITEOUT_ONLY, it may fail and the caller is expected to do an ordinary fsync as needed. On Apple platforms, the fsync system call does not issue a CACHE_FLUSH directive to the storage controller. This change updates fsync to do fcntl(F_FULLFSYNC) to make fsync actually durable. We maintain parity with existing behavior on Apple platforms by setting the default value of the new core.fsyncMethod option. Signed-off-by: Neeraj Singh <neerajsi@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-26compat: auto-detect if zlib has uncompress2()Libravatar Ævar Arnfjörð Bjarmason1-13/+0
We have a copy of uncompress2() implementation in compat/ so that we can build with an older version of zlib that lack the function, and the build procedure selects if it is used via the NO_UNCOMPRESS2 $(MAKE) variable. This is yet another "annoying" knob the porters need to tweak on platforms that are not common enough to have the default set in the config.mak.uname file. Attempt to instead ask the system header <zlib.h> to decide if we need the compatibility implementation. This is a deviation from the way we have been handling the "compatiblity" features so far, and if it can be done cleanly enough, it could work as a model for features that need compatibility definition we discover in the future. With that goal in mind, avoid expedient but ugly hacks, like shoving the code that is conditionally compiled into an unrelated .c file, which may not work in future cases---instead, take an approach that uses a file that is independently compiled and stands on its own. Compile and link compat/zlib-uncompress2.c file unconditionally, but conditionally hide the implementation behind #if/#endif when zlib version is 1.2.9 or newer, and unconditionally archive the resulting object file in the libgit.a to be picked up by the linker. There are a few things to note in the shape of the code base after this change: - We no longer use NO_UNCOMPRESS2 knob; if the system header <zlib.h> claims a version that is more cent than the library actually is, this would break, but it is easy to add it back when we find such a system. - The object file compat/zlib-uncompress2.o is always compiled and archived in libgit.a, just like a few other compat/ object files already are. - The inclusion of <zlib.h> is done in <git-compat-util.h>; we used to do so from <cache.h> which includes <git-compat-util.h> as the first thing it does, so from the *.c codes, there is no practical change. - Until objects in libgit.a that is already used gains a reference to the function, the reftable code will be the only one that wants it, so libgit.a on the linker command line needs to appear once more at the end to satisify the mutual dependency. - Beat found a trick used by OpenSSL to avoid making the conditionally-compiled object truly empty (apparently because they had to deal with compilers that do not want to see an effectively empty input file). Our compat/zlib-uncompress2.c file borrows the same trick for portabilty. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Helped-by: Beat Bolli <dev+git@drbeat.li> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-15Merge branch 'hn/reftable'Libravatar Junio C Hamano1-0/+13
The "reftable" backend for the refs API, without integrating into the refs subsystem, has been added. * hn/reftable: Add "test-tool dump-reftable" command. reftable: add dump utility reftable: implement stack, a mutable database of reftable files. reftable: implement refname validation reftable: add merged table view reftable: add a heap-based priority queue for reftable records reftable: reftable file level tests reftable: read reftable files reftable: generic interface to tables reftable: write reftable files reftable: a generic binary tree implementation reftable: reading/writing blocks Provide zlib's uncompress2 from compat/zlib-compat.c reftable: (de)serialization for the polymorphic record type. reftable: add blocksource, an abstraction for random access reads reftable: utility functions reftable: add error related functionality reftable: add LICENSE hash.h: provide constants for the hash IDs
2021-10-21git-sh-setup: remove "sane_grep", it's not needed anymoreLibravatar Ævar Arnfjörð Bjarmason1-8/+0
Remove the sane_grep() shell function in git-sh-setup. The two reasons for why it existed don't apply anymore: 1. It was added due to GNU grep supporting GREP_OPTIONS. See e1622bfcbad (Protect scripted Porcelains from GREP_OPTIONS insanity, 2009-11-23). Newer versions of GNU grep ignore that, but even on older versions its existence won't matter, none of these sane_grep() uses care about grep's output, they're merely using it to check if a string exists in a file or stream. We also don't care about the "LC_ALL=C" that "sane_grep" was using, these greps for fixed or ASCII strings will behave the same under any locale. 2. The SANE_TEXT_GREP added in 71b401032b9 (sane_grep: pass "-a" if grep accepts it, 2016-03-08) isn't needed either, none of these grep uses deal with binary data. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-08Provide zlib's uncompress2 from compat/zlib-compat.cLibravatar Han-Wen Nienhuys1-0/+13
This will be needed for reading reflog blocks in reftable. Helped-by: Carlo Marcelo Arenas Belón <carenas@gmail.com> Signed-off-by: Han-Wen Nienhuys <hanwen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-01-23Remove support for v1 of the PCRE libraryLibravatar Ævar Arnfjörð Bjarmason1-43/+8
Remove support for using version 1 of the PCRE library. Its use has been discouraged by upstream for a long time, and it's in a bugfix-only state. Anyone who was relying on v1 in particular got a nudge to move to v2 in e6c531b808 (Makefile: make USE_LIBPCRE=YesPlease mean v2, not v1, 2018-03-11), which was first released as part of v2.18.0. With this the LIBPCRE2 test prerequisites is redundant to PCRE. But I'm keeping it for self-documentation purposes, and to avoid conflict with other in-flight PCRE patches. I'm also not changing all of our own "pcre2" names to "pcre", i.e. the inverse of 6d4b5747f0 (grep: change internal *pcre* variable & function names to be *pcre1*, 2017-05-25). I don't see the point, and it makes the history/blame harder to read. Maybe if there's ever a PCRE v3... Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-01Merge branch 'dd/sequencer-utf8'Libravatar Junio C Hamano1-0/+49
Handling of commit objects that use non UTF-8 encoding during "rebase -i" has been improved. * dd/sequencer-utf8: sequencer: reencode commit message for am/rebase --show-current-patch sequencer: reencode old merge-commit message sequencer: reencode squashing commit's message sequencer: reencode revert/cherry-pick's todo list sequencer: reencode to utf-8 before arrange rebase's todo list t3900: demonstrate git-rebase problem with multi encoding configure.ac: define ICONV_OMITS_BOM if necessary t0028: eliminate non-standard usage of printf
2019-11-11configure.ac: define ICONV_OMITS_BOM if necessaryLibravatar Doan Tran Cong Danh1-0/+49
From commit 79444c9294, ("utf8: handle systems that don't write BOM for UTF-16", 2019-02-12), we're supporting those systems with iconv that omits BOM with: make ICONV_OMITS_BOM=Yes However, configure script wasn't taught to detect those systems. Teach configure to do so. Signed-off-by: Doan Tran Cong Danh <congdanhqx@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-10Fix spelling errors in code commentsLibravatar Elijah Newren1-1/+1
Reported-by: Jens Schleusener <Jens.Schleusener@fossies.org> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-06-07configure: Detect linking style for HP aCC on HP-UXLibravatar Michael Osipov1-2/+12
HP aCC does not accept any of the previously tested CC_LD_DYNPATH formats, but only its own[1] "-Wl,+b" format. Add it to configure.ac. 1. http://nixdoc.net/man-pages/hp-ux/man1/ld_pa.1.html Signed-off-by: Michael Osipov <michael.osipov@siemens.com> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-19autoconf: #include <libintl.h> when checking for gettext()Libravatar Vadim Kochan1-3/+13
Some libc implementations like uclibc or musl provides gettext stubs via libintl library but this case is not checked by AC_CHECK_LIB(c, gettext ...) because gcc has gettext as builtin which passess the check. So check it with included libintl.h where gettext may unfold into libintl_gettext which will cause check to fail if libintl_gettext are needed to be linked with -lintl. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-19Merge branch 'dd/poll-dot-h'Libravatar Junio C Hamano1-0/+6
A build update. * dd/poll-dot-h: git-compat-util: prefer poll.h to sys/poll.h
2018-11-14git-compat-util: prefer poll.h to sys/poll.hLibravatar Đoàn Trần Công Danh1-0/+6
POSIX specifies that <poll.h> is the correct header for poll(2) whereas <sys/poll.h> is only needed for some old libc. Let's follow the POSIX way by default. This effectively eliminates musl's warning: warning redirecting incorrect #include <sys/poll.h> to <poll.h> Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-05build: link with curl-defined linker flagsLibravatar James Knight1-10/+7
Adjusting the build process to rely more on curl-config to populate linker flags instead of manually populating flags based off detected features. Originally, a configure-invoked build would check for SSL-support in the target curl library. If enabled, NEEDS_SSL_WITH_CURL would be set and used in the Makefile to append additional libraries to link against. As for systems building solely with make, the defines NEEDS_IDN_WITH_CURL and NEEDS_SSL_WITH_CURL could be set to indirectly enable respective linker flags. Since both configure.ac and Makefile already rely on curl-config utility to provide curl-related build information, adjusting the respective assets to populate required linker flags using the utility (unless explicitly configured). Signed-off-by: James Knight <james.d.knight@live.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-25Merge branch 'es/fread-reads-dir-autoconf-fix'Libravatar Junio C Hamano1-1/+1
Small fix to the autoconf build procedure. * es/fread-reads-dir-autoconf-fix: configure.ac: fix botched FREAD_READS_DIRECTORIES check
2018-04-09configure.ac: fix botched FREAD_READS_DIRECTORIES checkLibravatar Eric Sunshine1-1/+1
3adf9fdecf (configure.ac: loosen FREAD_READS_DIRECTORIES test program, 2017-06-14) broke the test program for the FREAD_READS_DIRECTORIES check by making it syntactically invalid (a dangling ")") and by botching the type returned from 'main' (a FILE* rather than int). As a consequence, the test program won't even compile, thus the check fails unconditionally. Fix these problems. Reported-by: Jonathan Primrose <jprimros@gmail.com> Signed-off-by: Eric Sunshine <sunshine@sunshineco.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>
2018-03-14configure: detect redundant --with-libpcre & --with-libpcre1Libravatar Ævar Arnfjörð Bjarmason1-0/+4
The --with-libpcre option is a synonym for the --with-libpcre1 flag, but the configure script allowed for redundantly specifying both. Nothing broke as a result of this, but it's confusing, so let's disallow it. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14configure: fix a regression in PCRE v1 detectionLibravatar Ævar Arnfjörð Bjarmason1-2/+2
Change the check for PCRE v1 to disable the --with-libpcre1 option if the pcre_version() function can't be found in the pcre library. I unintentionally changed this in my 94da9193a6 ("grep: add support for PCRE v2", 2017-06-01) while renaming moving some variables. The intent of this check ever since it was added in a119f91e57 ("configure: Check for libpcre", 2011-05-09) is to second-guess the user and turn off an explicitly provided --with-libpcre if the library can't be found. I don't think that behavior makes any sense, we shouldn't be second-guessing the user with an auto-detection, but changing that needs a bigger refactoring of this script, and only has marginal benefits. So let's fix it to work as it was intended to work again. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-28Makefile: NO_OPENSSL=1 should no longer imply BLK_SHA1=1Libravatar Ævar Arnfjörð Bjarmason1-1/+0
Use the collision detecting SHA-1 implementation by default even when NO_OPENSSL is set. Setting NO_OPENSSL=UnfortunatelyYes has implied BLK_SHA1=1 ever since the former was introduced in dd53c7ab29 (Support for NO_OPENSSL, 2005-07-29). That implication should have been removed when the default SHA-1 implementation changed from OpenSSL to DC_SHA1 in e6b07da278 (Makefile: make DC_SHA1 the default, 2017-03-17). Finish what that commit started by removing the BLK_SHA1 fallback setting so the default DC_SHA1 implementation will be used. Helped-by: Jonathan Nieder <jrnieder@gmail.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-22Merge branch 'nd/fopen-errors'Libravatar Junio C Hamano1-2/+2
Hotfix for a topic that is already in 'master'. * nd/fopen-errors: configure.ac: loosen FREAD_READS_DIRECTORIES test program
2017-06-15configure.ac: loosen FREAD_READS_DIRECTORIES test programLibravatar Jeff King1-2/+2
We added an FREAD_READS_DIRECTORIES Makefile knob long ago in cba22528f (Add compat/fopen.c which returns NULL on attempt to open directory, 2008-02-08) to handle systems where reading from a directory returned garbage. This works by catching the problem at the fopen() stage and returning NULL. More recently, we found that there is a class of systems (including Linux) where fopen() succeeds but fread() fails. Since the solution is the same (having fopen return NULL), they use the same Makefile knob as of e2d90fd1c (config.mak.uname: set FREAD_READS_DIRECTORIES for Linux and FreeBSD, 2017-05-03). This works fine except for one thing: the autoconf test in configure.ac to set FREAD_READS_DIRECTORIES actually checks whether fread succeeds. Which means that on Linux systems, the knob isn't set (and we even override the config.mak.uname default). t1308 catches the failure. We can fix this by tweaking the autoconf test to cover both cases. In theory we might care about the distinction between the traditional "fread reads directories" case and the new "fopen opens directories". But since our solution catches the problem at the fopen stage either way, we don't actually need to know the difference. The "fopen" case is a superset. This does mean the FREAD_READS_DIRECTORIES name is slightly misleading. Probably FOPEN_OPENS_DIRECTORIES would be more accurate. But it would be disruptive to simply change the name (people's existing build configs would fail), and it's not worth the complexity of handling both. Let's just add a comment in the knob description. Reported-by: Øyvind A. Holm <sunny@sunbase.org> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02grep: add support for PCRE v2Libravatar Ævar Arnfjörð Bjarmason1-12/+65
Add support for v2 of the PCRE API. This is a new major version of PCRE that came out in early 2015[1]. The regular expression syntax is the same, but while the API is similar, pretty much every function is either renamed or takes different arguments. Thus using it via entirely new functions makes sense, as opposed to trying to e.g. have one compile_pcre_pattern() that would call either PCRE v1 or v2 functions. Git can now be compiled with either USE_LIBPCRE1=YesPlease or USE_LIBPCRE2=YesPlease, with USE_LIBPCRE=YesPlease currently being a synonym for the former. Providing both is a compile-time error. With earlier patches to enable JIT for PCRE v1 the performance of the release versions of both libraries is almost exactly the same, with PCRE v2 being around 1% slower. However after I reported this to the pcre-dev mailing list[2] I got a lot of help with the API use from Zoltán Herczeg, he subsequently optimized some of the JIT functionality in v2 of the library. Running the p7820-grep-engines.sh performance test against the latest Subversion trunk of both, with both them and git compiled as -O3, and the test run against linux.git, gives the following results. Just the /perl/ tests shown: $ GIT_PERF_REPEAT_COUNT=30 GIT_PERF_LARGE_REPO=~/g/linux GIT_PERF_MAKE_COMMAND='grep -q LIBPCRE2 Makefile && make -j8 USE_LIBPCRE2=YesPlease CC=~/perl5/installed/bin/gcc NO_R_TO_GCC_LINKER=YesPlease CFLAGS=-O3 LIBPCREDIR=/home/avar/g/pcre2/inst LDFLAGS=-Wl,-rpath,/home/avar/g/pcre2/inst/lib || make -j8 USE_LIBPCRE=YesPlease CC=~/perl5/installed/bin/gcc NO_R_TO_GCC_LINKER=YesPlease CFLAGS=-O3 LIBPCREDIR=/home/avar/g/pcre/inst LDFLAGS=-Wl,-rpath,/home/avar/g/pcre/inst/lib' ./run HEAD~5 HEAD~ HEAD p7820-grep-engines.sh [...] Test HEAD~5 HEAD~ HEAD ----------------------------------------------------------------------------------------------------------------- 7820.3: perl grep 'how.to' 0.31(1.10+0.48) 0.21(0.35+0.56) -32.3% 0.21(0.34+0.55) -32.3% 7820.7: perl grep '^how to' 0.56(2.70+0.40) 0.24(0.64+0.52) -57.1% 0.20(0.28+0.60) -64.3% 7820.11: perl grep '[how] to' 0.56(2.66+0.38) 0.29(0.95+0.45) -48.2% 0.23(0.45+0.54) -58.9% 7820.15: perl grep '(e.t[^ ]*|v.ry) rare' 1.02(5.77+0.42) 0.31(1.02+0.54) -69.6% 0.23(0.50+0.54) -77.5% 7820.19: perl grep 'm(ú|u)lt.b(æ|y)te' 0.38(1.57+0.42) 0.27(0.85+0.46) -28.9% 0.21(0.33+0.57) -44.7% See commit ("perf: add a comparison test of grep regex engines", 2017-04-19) for details on the machine the above test run was executed on. Here HEAD~2 is git with PCRE v1 without JIT, HEAD~ is PCRE v1 with JIT, and HEAD is PCRE v2 (also with JIT). See previous commits of mine mentioning p7820-grep-engines.sh for more details on the test setup. For ease of readability, a different run just of HEAD~ (PCRE v1 with JIT v.s. PCRE v2), again with just the /perl/ tests shown: [...] Test HEAD~ HEAD ---------------------------------------------------------------------------------------- 7820.3: perl grep 'how.to' 0.21(0.42+0.52) 0.21(0.31+0.58) +0.0% 7820.7: perl grep '^how to' 0.25(0.65+0.50) 0.20(0.31+0.57) -20.0% 7820.11: perl grep '[how] to' 0.30(0.90+0.50) 0.23(0.46+0.53) -23.3% 7820.15: perl grep '(e.t[^ ]*|v.ry) rare' 0.30(1.19+0.38) 0.23(0.51+0.51) -23.3% 7820.19: perl grep 'm(ú|u)lt.b(æ|y)te' 0.27(0.84+0.48) 0.21(0.34+0.57) -22.2% I.e. the two are either neck-to-neck, but PCRE v2 usually pulls ahead, when it does it's around 20% faster. A brief note on thread safety: As noted in pcre2api(3) & pcre2jit(3) the compiled pattern can be shared between threads, but not some of the JIT context, however the grep threading support does all pattern & JIT compilation in separate threads, so this code doesn't need to concern itself with thread safety. See commit 63e7e9d8b6 ("git-grep: Learn PCRE", 2011-05-09) for the initial addition of PCRE v1. This change follows some of the same patterns it did (and which were discussed on list at the time), e.g. mocking up types with typedef instead of ifdef-ing them out when USE_LIBPCRE2 isn't defined. This adds some trivial memory use to the program, but makes the code look nicer. 1. https://lists.exim.org/lurker/message/20150105.162835.0666407a.en.html 2. https://lists.exim.org/lurker/thread/20170419.172322.833ee099.en.html Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-21Makefile & configure: reword inaccurate comment about PCRELibravatar Ævar Arnfjörð Bjarmason1-4/+8
Reword an outdated & inaccurate comment which suggests that only git-grep can use PCRE. This comment was added back when PCRE support was initially added in commit 63e7e9d8b6 ("git-grep: Learn PCRE", 2011-05-09), and was true at the time. It hasn't been telling the full truth since git-log learned to use PCRE with --grep in commit 727b6fc3ed ("log --grep: accept --basic-regexp and --perl-regexp", 2012-10-03), and more importantly is likely to get more inaccurate over time as more use is made of PCRE in other areas. Reword it to be more future-proof, and to more clearly explain that this enables user-initiated runtime behavior. Copy/pasting this so much in configure.ac is lame, these Makefile-like flags aren't even used by autoconf, just the corresponding --with[out]-* options. But copy/pasting the comments that make sense for the Makefile to configure.ac where they make less sense is the pattern everything else follows in that file. I'm not going to war against that as part of this change, just following the existing pattern. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-28wrapper.c: remove unused gitmkstemps() functionLibravatar Ramsay Jones1-6/+0
The last call to the mkstemps() function was removed in commit 659488326 ("wrapper.c: delete dead function git_mkstemps()", 22-04-2016). In order to support platforms without mkstemps(), this functionality was provided, along with a Makefile build variable (NO_MKSTEMPS), by the gitmkstemps() function. Remove the dead code, along with the defunct build machinery. Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-17Merge branch 'js/regexec-buf'Libravatar Junio C Hamano1-6/+7
* js/regexec-buf: configure.ac: improve description of NO_REGEX test
2016-10-10configure.ac: improve description of NO_REGEX testLibravatar Jakub Narębski1-6/+7
The commit 2f8952250a ("regex: add regexec_buf() that can work on a non NUL-terminated string", 2016-09-21) changed description of NO_REGEX build config variable to be more neutral, and actually say that it is about support for REG_STARTEND. Change description in configure.ac to match. Change also the test message and variable name to match. The test just checks that REG_STARTEND is #defined. Issue-found-by: Ramsay Jones <ramsay@ramsayjones.plus.com> Signed-off-by: Jakub Narębski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10Merge branch 'dp/autoconf-curl-ssl'Libravatar Junio C Hamano1-10/+11
The ./configure script generated from configure.ac was taught how to detect support of SSL by libcurl better. * dp/autoconf-curl-ssl: ./configure.ac: detect SSL in libcurl using curl-config
2016-07-25Merge branch 'ew/autoconf-pthread'Libravatar Junio C Hamano1-0/+5
Existing autoconf generated test for the need to link with pthread library did not check all the functions from pthread libraries; recent FreeBSD has some functions in libc but not others, and we mistakenly thought linking with libc is enough when it is not. * ew/autoconf-pthread: configure.ac: stronger test for pthread linkage
2016-07-18configure.ac: stronger test for pthread linkageLibravatar Eric Wong1-0/+5
We need to test linkage of pthread_create and pthread_join, as pthread_mutex_* and pthread_key_* functions do not need extra linkage under FreeBSD 10.3, leading to a false-positive of the empty case. Signed-off-by: Eric Wong <e@80x24.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-06-28./configure.ac: detect SSL in libcurl using curl-configLibravatar Дилян Палаузов1-10/+11
The API of libcurl does not mention Curl_ssl_init() and when curl is built with -flto, the Curl_ssl_init symbol is not exported. https://curl.haxx.se/libcurl/using/ suggests calling curl-config --feature | grep SSL to see, if the installed curl has SSL support. Another approach would be calling curl_version_info and checking the returned struct. This patch removes the check for the Curl_ssl_init exported symbol from libcurl and uses curl-config to detect SSL support in libcurl. Signed-off-by: Дилян Палаузов <git-dpa@aegee.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-05-06Merge branch 'ky/imap-send-openssl-1.1.0' into maintLibravatar Junio C Hamano1-4/+0
Upcoming OpenSSL 1.1.0 will break compilation b updating a few APIs we use in imap-send, which has been adjusted for the change. * ky/imap-send-openssl-1.1.0: configure: remove checking for HMAC_CTX_cleanup imap-send: avoid deprecated TLSv1_method() imap-send: check NULL return of SSL_CTX_new() imap-send: use HMAC() function provided by OpenSSL
2016-04-22Merge branch 'ky/imap-send-openssl-1.1.0'Libravatar Junio C Hamano1-4/+0
Upcoming OpenSSL 1.1.0 will break compilation b updating a few APIs we use in imap-send, which has been adjusted for the change. * ky/imap-send-openssl-1.1.0: configure: remove checking for HMAC_CTX_cleanup imap-send: avoid deprecated TLSv1_method() imap-send: check NULL return of SSL_CTX_new() imap-send: use HMAC() function provided by OpenSSL
2016-04-08configure: remove checking for HMAC_CTX_cleanupLibravatar Kazuki Yamaguchi1-4/+0
We don't need it, as we no longer use HMAC_CTX_cleanup() directly. Signed-off-by: Kazuki Yamaguchi <k@rhe.jp> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-16Merge branch 'jc/sane-grep'Libravatar Junio C Hamano1-0/+7
Recent versions of GNU grep is pickier than before to decide if a file is "binary" and refuse to give line-oriented hits when we expect it to, unless explicitly told with "-a" option. As our scripted Porcelains use sane_grep wrapper for line-oriented data, even when the line may contain non-ASCII payload we took from end-user data, use "grep -a" to implement sane_grep wrapper when using an implementation of "grep" that takes the "-a" option. * jc/sane-grep: rebase-i: clarify "is this commit relevant?" test sane_grep: pass "-a" if grep accepts it
2016-03-10sane_grep: pass "-a" if grep accepts itLibravatar Junio C Hamano1-0/+7
Newer versions of GNU grep is reported to be pickier when we feed a non-ASCII input and break some Porcelain scripts. As we know we do not feed random binary file to our own sane_grep wrapper, allow us to always pass "-a" by setting SANE_TEXT_GREP=-a Makefile variable to work it around. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-12-01Merge branch 'rc/configure-use-libs-when-checking-a-lib' into maintLibravatar Jeff King1-1/+7
The "configure" script did not test for -lpthread correctly, which upset some linkers. * rc/configure-use-libs-when-checking-a-lib: configure.ac: use $LIBS not $CFLAGS when testing -lpthread
2015-11-24Merge branch 'rc/configure-use-libs-when-checking-a-lib'Libravatar Jeff King1-1/+7
The "configure" script did not test for -lpthread correctly, which upset some linkers. * rc/configure-use-libs-when-checking-a-lib: configure.ac: use $LIBS not $CFLAGS when testing -lpthread
2015-11-06configure.ac: use $LIBS not $CFLAGS when testing -lpthreadLibravatar Rainer M. Canavan1-1/+7
Some linkers, namely the one on IRIX are rather strict concerning the order or arguments for symbol resolution, i.e. no libraries listed before objects or other libraries on the command line are considered for symbol resolution. Therefore, -lpthread can't work if it's put in CFLAGS, because it will not be considered for resolving pthread_key_create in conftest.o. Use $LIBS instead. Signed-off-by: Rainer Canavan <git@canavan.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-10-29Merge branch 'rp/link-curl-before-ssl'Libravatar Junio C Hamano1-0/+23
The linkage order of libraries was wrong in places around libcurl. * rp/link-curl-before-ssl: configure.ac: detect ssl need with libcurl Makefile: make curl-config path configurable Makefile: link libcurl before zlib
2015-10-21configure.ac: detect ssl need with libcurlLibravatar Remi Pommarel1-0/+10
When libcurl has been statically compiled with openssl support they both need to be linked in everytime libcurl is used. During configuration this can be detected by looking for Curl_ssl_init function symbol in libcurl, which will only be present if libcurl has been compiled statically built with openssl. configure.ac checks for Curl_ssl_init function in libcurl and if such function exists; it sets NEEDS_SSL_WITH_CURL that is used by the Makefile to include -lssl alongside with -lcurl. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-10-21Makefile: make curl-config path configurableLibravatar Remi Pommarel1-0/+13
There are situations, e.g. during cross compilation, where curl-config program is not present in the PATH. Make the makefile use a configurable curl-config program passed through CURL_CONFIG variable which can be set through config.mak. Also make this variable tunable through use of autoconf/configure. Configure will set CURL_CONFIG variable in config.mak.autogen to whatever value has been passed to ac_cv_prog_CURL_CONFIG. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-10-05Makefile: drop D_INO_IN_DIRENT build knobLibravatar Jeff King1-7/+0
Now that fsck has dropped its inode-sorting, there are no longer any users of this knob, and it can go away. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-03configure: add getdelim() checkLibravatar Eric Sunshine1-0/+6
As an optimization, strbuf will take advantage of getdelim() if available, so add a configure check which defines HAVE_GETDELIM if found. Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-03-10configure: support HAVE_BSD_SYSCTL optionLibravatar Kyle J. McKay1-0/+23
On BSD-compatible systems some information such as the number of available CPUs may only be available via the sysctl function. Add support for a HAVE_BSD_SYSCTL option complete with autoconf support and include the sys/syctl.h header when the option is enabled to make the sysctl function available. Signed-off-by: Kyle J. McKay <mackyle@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-01-09configure.ac: check for HMAC_CTX_cleanupLibravatar Reuben Hawkins1-0/+4
OpenSSL version 0.9.6b and before defined the function HMAC_cleanup. Newer versions define HMAC_CTX_cleanup. Check for HMAC_CTX_cleanup and fall back to HMAC_cleanup when the newer function is missing. Signed-off-by: Reuben Hawkins <reubenhwk@gmail.com> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-01-09configure.ac: check for clock_gettime and CLOCK_MONOTONICLibravatar Reuben Hawkins1-0/+22
Set or clear Makefile variables HAVE_CLOCK_GETTIME and HAVE_CLOCK_MONOTONIC based upon results of the checks (overriding default values from config.mak.uname). CLOCK_MONOTONIC isn't available on RHEL3, but there are still RHEL3 systems being used in production. Signed-off-by: Reuben Hawkins <reubenhwk@gmail.com> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-01-09configure.ac: check 'tv_nsec' field in 'struct stat'Libravatar Reuben Hawkins1-0/+13
Detect 'tv_nsec' field in 'struct stat' and set Makefile variable NO_NSEC appropriately. A side-effect of the above detection is that we also determine whether 'stat.st_mtimespec' is available, so, as a bonus, set the Makefile variable USE_ST_TIMESPEC, as well. Signed-off-by: Reuben Hawkins <reubenhwk@gmail.com> Helped-by: Eric Sunshine <sunshine@sunshineco.com> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22Merge branch 'dm/compat-s-ifmt-for-zos'Libravatar Junio C Hamano1-0/+23
Long overdue departure from the assumption that S_IFMT is shared by everybody made in 2005. * dm/compat-s-ifmt-for-zos: compat: convert modes to use portable file type values