Commit Graph

154 Commits

Author SHA1 Message Date
Viktor Szakats
0aece8f66d
tidy-up: indent, whitespace, #error in make files
Replace invalid C with `#error`.

Cherry-picked from #14692
Closes #14997
2024-09-22 09:51:15 +02:00
Viktor Szakats
60c3d04465
autotools: add support for 'unity' builds, enable in CI
Implement the "unity" builds as known from CMake, but for autotools.
It's limited to `lib` and `src` (CMake also supports it in `tests`).

Enable with: `--enable-unity` (disabled by default)

Unity builds speed up builds significantly. Cygwin and Windows builds in
particular, but the effect is noticeable on most systems. It also allows
discovering unity issues with autotools, benefitting also CMake when
building the same combination. In CI it makes turnaround times quicker.

This closes build performance with CMake. autotools still lags behind
because it builds shared and static libcurl in two, separate passes.
CMake does it in one. Manpage compilation isn't batched, it is in CMake.
After unity and test bundle support the slowest parts of the build are
the configuration phase (which is effectively a tedious, non-parallel,
compilation and/or linking of 300+ tiny programs. The next bottleneck
is compiling individual examples and finally test servers (only slow
with autotools).

The autotools implementation is slightly less efficient than CMake,
because 3 sources are permanently excluded while in CMake this isn't
necessary and solved more efficiently while building libtests. There is
also no 'unity' support for tests, making them a less efficient also.

Enable it in CI for most `configure` jobs. Except in GHA/dist (though
it works fine there too), to use the default config there. Also skip for
the Linux AWC-LC job where it made builds time a few seconds longer
(reason undiscovered.)

Autotools test suite builds compared between master -> `--enable-unity`:
- GHA/Linux: 32s -> 12s
  https://github.com/curl/curl/actions/runs/10705668823/job/29681617374
  https://github.com/curl/curl/actions/runs/10742978889/job/29796766297
- GHA/macOS: 37s -> 10s
  https://github.com/curl/curl/actions/runs/10705668813/job/29681632885
  https://github.com/curl/curl/actions/runs/10742978699/job/29796768875
- GHA/FreeBSD: 15m25 -> 10m58 (full workflow time, ~qemu)
  https://github.com/curl/curl/actions/runs/10705668811/job/29681607915
  https://github.com/curl/curl/actions/runs/10742978937/job/29796766115
- GHA/Cygwin: 3m32 -> 1m21
  https://github.com/curl/curl/actions/runs/10705668809/job/29681609965
  https://github.com/curl/curl/actions/runs/10742978645/job/29796756933
- GHA/MSYS2: 2m42 -> 50s
  https://github.com/curl/curl/actions/runs/10705668808/job/29681621166
  https://github.com/curl/curl/actions/runs/10742978662/job/29799739289
- GHA/mingw-w64: 5m32 -> 1m23
  https://github.com/curl/curl/actions/runs/10705668808/job/29681628787
  https://github.com/curl/curl/actions/runs/10742978662/job/29799741568

Closes #14815
2024-09-20 23:53:33 +02:00
Viktor Szakats
fdb8b40fed
autotools: tidy-ups in src/Makefile.inc
- move `EXTRA_DIST` to the top of file.
- move `checksrc` init next to use.
- use variable `HUGE` instead of repeating a literal.

Cherry-picked from #14815
Closes #14933
2024-09-19 15:44:59 +02:00
Viktor Szakats
28fa417bf0
autotools: fix --with-ca-embed build rule
Add missing rule dependency on the user-specified CA bundle. This fixes
including it when using the curl distro tarball, and other cases.

Also:
- fix the internal name of the CA bundle to avoid nested quotes.
  It broke broke the rule dependency for the make tool.
- exclude the generated (empty) `tool_ca_embed.c` file from the distro
  tarball.
  Patch-by: Daniel Stenberg

Follow-up to 8a3740bc8e #14059
Reported-by: rampageX on github
Fixes #14879
Closes #14882
2024-09-12 19:58:14 +02:00
Viktor Szakats
4a8be91314
build: drop unused NROFF reference
Closes #14812
2024-09-06 21:46:05 +02:00
Daniel Stenberg
3af75e18d6
configure: remove USE_EXPLICIT_LIB_DEPS
Added a long time ago for something that libtool should handle for us.

Closes #14697
2024-08-28 13:45:01 +02:00
Viktor Szakats
aaacd02466
GHA/configure-vs-cmake: add Windows build, fix issues
- configure: disable pthreads by default on Windows.
- configure: disable detecting `fseeko()` on Windows.
  (It exists in mingw-w64 2.0.0 and newer, but it's permanently ignored
  in CMake, as this function is never necessary on Windows.)
- extend existing exceptions with their Windows variants.
- `lib/formdata.c`: prioritize `_fseeki64()` over `fseeko()`.
  To reduce the difference between Windows builds, which now all use
  `_fseeki64()`.
- cmake: perm-enable `HAVE_DIRENT_H` and `HAVE_OPENDIR` for mingw-w64,
  to match configure.
  Follow-up to bfe54b0e88 #13137
  This in theory could make the dir listing feature work in mingw-w64
  build, but in my tests (on WINE) it failed at the preceding `open()`
  call.
- cmake: perm-enable `HAVE_STRINGS_H` and `HAVE_UTIME_H` for mingw-w64,
  to match configure. (They are wrappers and make no difference in the build.)

Also:
- configure: sync `USE_MANUAL` macro with cmake, by only setting it for
  `src`. Drop checker exception.
- CI: use `--disable-dependency-tracking` in existing jobs.
- CI: install packages before git checkout, in existing jobs.

Closes #14678
2024-08-26 11:07:58 +02:00
Viktor Szakats
d222dbe788
build: tidy up internal macro names for libcurl.pc
Rename internal macros to match their `libcurl.pc` metadata counterpart.
Also apply these to the `curl-config.in` template.

- `CPPFLAG_CURL_STATICLIB` -> `LIBCURL_PC_CFLAGS`
- `LIBCURL_LIBS`           -> `LIBCURL_PC_LIBS_PRIVATE`
- `LIBCURL_NO_SHARED`      -> `LIBCURL_PC_LIBS`

Closes #14476
2024-08-12 14:56:41 +02:00
Viktor Szakats
9e4a2187e7
autotools: add --with-windows-unicode option
- add `--with-windows-unicode` and `--without-windows-unicode` (default)
  options.

- enable it in a CI job.

Fixes #7229
Closes #14478
2024-08-10 10:02:49 +02:00
Viktor Szakats
8a3740bc8e
curl: support embedding a CA bundle
Add the ability to embed a CA bundle into the curl binary. It is used
when no other runtime or build-time option set one.

This helps curl-for-win macOS and Linux builds to run standalone, and
also helps Windows builds to avoid picking up the CA bundle from an
arbitrary (possibly world-writable) location (though this behaviour is
not currently disablable).

Usage:
- cmake: `-DCURL_CA_EMBED=/path/to/curl-ca-bundle.crt`
- autotools: `--with-ca-embed=/path/to/curl-ca-bundle.crt`
- Makefile.mk: `CURL_CA_EMBED=/path/to/curl-ca-bundle.crt`

Also add new command-line option `--dump-ca-embed` to dump the embedded
CA bundle to standard output.

Closes #14059
2024-08-03 09:22:26 +02:00
Daniel Stenberg
5c873da92a
src/Makefile.am: remove SUBDIRS assignment
It was once used to continue into ../docs but is just leftovers now.

Closes #14054
2024-06-29 22:22:23 +02:00
Viktor Szakats
59dc9f7e69
build: untangle CURLDEBUG and DEBUGBUILD macros
`CURLDEBUG` is meant to enable memory tracking, but in a bunch of cases,
it was protecting debug features that were supposed to be guarded with
`DEBUGBUILD`.

Replace these uses with `DEBUGBUILD`.

This leaves `CURLDEBUG` uses solely for its intended  purpose: to enable
the memory tracking debug feature.

Also:
- autotools: rely on `DEBUGBUILD` to enable `checksrc`.
  Instead of `CURLDEBUG`, which worked in most cases because debug
  builds enable `CURLDEBUG` by default, but it's not accurate.
- include `lib/easyif.h` instead of keeping a copy of a declaration.
- add CI test jobs for the build issues discovered.

Ref: https://github.com/curl/curl/pull/13694#issuecomment-2120311894
Closes #13718
2024-05-28 08:12:00 +02:00
Daniel Stenberg
b4e8183f52
src/Makefile.am: access curl.txt using a relative path, not abs
... to make it work when mounted using different mount points. Like when
generated/used inside and outside of a docker image.

Closes #13320
2024-04-09 08:10:20 +02:00
Daniel Stenberg
f03c85635f
docs: ascii version of manpage without nroff
Create ASCII version of manpage without nroff

 - build src/tool_hugegelp.c from the ascii manpage
 - move the the manpage and the ascii version build to docs/cmdline-opts
 - remove all use of nroff from the build process
 - should make the build entirely reproducible (by avoiding nroff)

 - partly reverts 2620aa9 to build libcurl option man pages one by one
   in cmake because the appveyor builds got all crazy until I did

The ASCII version of the manpage

 - is built with gen.pl, just like the manpage is
 - has a right-justified column making the appearance similar to the previous
   version
 - uses a 4-space indent per level (instead of the old version's 7)
 - does not do hyphenation of words (which nroff does)

History

  We first made the curl build use nroff for building the hugehelp file in
  December 1998, for curl 5.2.

Closes #13047
2024-03-06 15:55:59 +01:00
Chris Webb
541321507e
configure: add --disable-docs flag
Building man pages from curldown sources now requires perl. Add a
--disable-docs flag to configure to enable building and installing
without documentation where perl is not available or man pages are not
required. This is selected automatically (with a warning) when perl is
not found by configure.

Fixes #12832
Closes #12857
2024-02-05 19:39:52 +01:00
Daniel Stenberg
52c4d8d3f4
tool: fix the listhelp generation command
The previous command line to generate the tool_listhelp.c source file
broke with 2494b8dd51.

Make 'make listhelp' invoked in src/ generate it. Also update the
comment in the file to mention the right procedure.

Closes #12786
2024-01-25 13:54:26 +01:00
Viktor Szakats
b365a34c60
autotools: accept linker flags via CURL_LDFLAGS_{LIB,BIN}
To allow passing `LDFLAGS` specific to libcurl (`CURL_LDFLAGS_LIB`) and
curl tool (`CURL_LDFLAGS_BIN`).

This makes it possible to build libcurl and curl with a single
invocation with lib- and tool-specific custom linker flags.

Such flag can be enabling `.map` files, a `.def` file for libcurl DLL,
controlling static/shared, incl. requesting a static curl tool (with
`-static-libtool-libs`) while building both shared and static libcurl.

curl-for-win uses the above and some more.

These options are already supported in `Makefile.mk`. CMake has built-in
variables for this.

Closes #12312
2023-11-14 13:39:34 +00:00
Viktor Szakats
fac90bd5c1
build: add src/.checksrc to source tarball
Regression from e5bb88b8f8 #11958

Bug: https://github.com/curl/curl/pull/11958#issuecomment-1757079071
Reported-by: Romain Geissler
Fixes #12084
Closes #12085
2023-10-11 14:04:33 +00:00
Daniel Stenberg
3ef3eaa27e
base64: also build for curl
Since the tool itself now uses the base64 code using the curlx way, it
needs to build also when the tool needs it. Starting now, the tool build
defines BULDING_CURL to allow lib-side code to use it.

Follow-up to 2e160c9c65

Closes #12010
2023-10-04 23:22:16 +02:00
Daniel Stenberg
7c8bae0d9c
nss: remove support for this TLS library
Closes #11459
2023-07-29 23:44:28 +02:00
Daniel Stenberg
934da11c0d
docs: provide more see also for cipher options
More cross references. Hide nroff errors.

Closes #11513
2023-07-25 22:30:09 +02:00
Daniel Stenberg
2bc1d775f5
copyright: update all copyright lines and remove year ranges
- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- saves us from pointless churn
- git keeps history for us
- the year range is kept in COPYING

checksrc is updated to allow non-year using copyright statements

Closes #10205
2023-01-03 09:19:21 +01:00
Viktor Szakats
a8861b6ccd
Makefile.mk: portable Makefile.m32
Update bare GNU Make `Makefile.m32` to:

- Move objects into a subdirectory.
- Add support for MS-DOS. Tested with DJGPP.
- Add support for Watt-32 (on MS-DOS).
- Add support for AmigaOS.
- Rename `Makefile.m32` to `Makefile.mk`
- Replace `ARCH` with `TRIPLET`.
- Build `tool_hugehelp.c` proper (when tools are available).
- Drop MS-DOS compatibility macro `USE_ZLIB` (replaced by `HAVE_LIBZ`)
- Add support for `ZLIB_LIBS` to override `-lz`.
- Omit object files when building examples.
- Default `CC` to `gcc` once again, for convenience. (Caveat: compiler
  name `cc` cannot be set now.)
- Set `-DCURL_NO_OLDIES` for examples, like autotools does.
- Delete `makefile.dj` files. Notice the configuration details and
  defaults are not retained with the new method.
- Delete `makefile.amiga` files. A successful build needs a few custom
  options. We're also not retaining all build details from the existing
  Amiga make files.
- Rename `Makefile.m32` to `Makefile.mk` to reflect that they are not
  Windows/MinGW32-specific anymore.
- Add support for new `CFG` options: `-map`, `-debug`, `-trackmem`
- Set `-DNDEBUG` by default.
- Allow using `-DOS=...` in all `lib/config-*.h` headers, syncing this
  with `config-win32.h`.
- Look for zlib parts in `ZLIB_PATH/include` and `ZLIB_PATH/lib`
  instead of bare `ZLIB_PATH`.

Note that existing build configurations for MS-DOS and AmigaOS likely
become incompatible with this change.

Example AmigaOS configuration:
```
export CROSSPREFIX=/opt/amiga/bin/m68k-amigaos-
export CC=gcc
export CPPFLAGS='-DHAVE_PROTO_BSDSOCKET_H'
export CFLAGS='-mcrt=clib2'
export LDFLAGS="${CFLAGS}"
export LIBS='-lnet -lm'
make -C lib -f Makefile.mk
make -C src -f Makefile.mk
```

Example MS-DOS configuration:
```
export CROSSPREFIX=/opt/djgpp/bin/i586-pc-msdosdjgpp-
export WATT_PATH=/opt/djgpp/net/watt
export ZLIB_PATH=/opt/djgpp
export OPENSSL_PATH=/opt/djgpp
export OPENSSL_LIBS='-lssl -lcrypt'
export CFG=-zlib-ssl
make -C lib -f Makefile.mk
make -C src -f Makefile.mk
```

Closes #9764
2022-11-22 08:28:41 +00:00
Viktor Szakats
3390ef0af0
windows: fail early with a missing windres in autotools
`windres` is not always auto-detected by autotools when building for
Windows. When this happened, the build failed with a confusing error due
to the empty `RC` command:

```
/bin/bash ../libtool --tag=RC --mode=compile  -I../include -DCURL_EMBED_MANIFEST  -i curl.rc -o curl.o
[...]
Usage: /sandbox/curl/libtool [OPTION]... [MODE-ARG]...
Try 'libtool --help' for more information.
libtool:   error: unrecognised option: '-I../include'
```

Improve this by verifying if `RC` is set, and fail with a clear error
otherwise.

Follow-up to 6de7322c03

Ref: https://curl.se/mail/lib-2022-10/0049.html
Reported-by: Thomas Glanzmann
Closes #9781
2022-11-01 22:45:28 +00:00
Viktor Szakats
b7260c4fda
windows: fix linking .rc to shared curl with autotools
`./configure --enable-shared --disable-static` fails when trying to link
a shared `curl.exe`, due to `libtool` magically changing the output
filename of `windres` to one that it doesn't find when linking:

```
/bin/sh ../libtool --tag=RC --mode=compile windres -I../../curl/include -DCURL_EMBED_MANIFEST  -i ../../curl/src/curl.rc -o curl.o
libtool: compile:  windres -I../../curl/include -DCURL_EMBED_MANIFEST -i ../../curl/src/curl.rc  -o .libs/curl.o
[...]
CCLD     curl.exe
clang: error: no such file or directory: 'curl.o'
```

Let's resolve this by skipping `libtool` and calling `windres` directly
when building `src` (aka `curl.exe`). Leave `lib` unchanged, as it does
need the `libtool` magic. This solution is compatible with building
a static `curl.exe`.

This build scenario is not CI-tested.

While here, delete an obsolete comment about a permanent `libtool`
warning that we've resolved earlier.

Regression from 6de7322c03

Reported-by: Christoph Reiter
Fixes #9803
Closes #9805
2022-10-27 06:45:32 +00:00
Viktor Szakats
6de7322c03
windows: add .rc support to autotools builds
After this update autotools builds will compile and link `.rc` resources
to Windows executables. Bringing this feature on par with CMake and
Makefile.m32 builds. And also making it unnecessary to improvise these
steps manually, while monkey patching build files, e.g. [0].

You can customize the resource compiler via the `RC` envvar, and its
options via `RCFLAGS`.

This harmless warning may appear throughout the build, even though the
autotools manual documents [1] `RC` as a valid tag, and it fails when
omitting one:
`libtool:   error: ignoring unknown tag RC`

[0] 535f19060d/curl-autotools.sh (L376-L382)
[1] https://www.gnu.org/software/libtool/manual/html_node/Tags.html

Closes #9521
2022-09-18 12:05:35 +00:00
Daniel Stenberg
b54920f7e4
tool_hugehelp: make hugehelp a blank macro when disabled
Closes #9485
2022-09-14 08:04:49 +02:00
max.mehl
ad9bc5976d
copyright: make repository REUSE compliant
Add licensing and copyright information for all files in this repository. This
either happens in the file itself as a comment header or in the file
`.reuse/dep5`.

This commit also adds a Github workflow to check pull requests and adapts
copyright.pl to the changes.

Closes #8869
2022-06-13 09:13:00 +02:00
Daniel Gustafsson
bf327a9dfe macos9: remove partial support
The support for compiling on Mac OS 9 hasn't been modified since 2001
and has no active maintainer or packager, so it's time to remove it as
it's incredibly unlikely to work. If a maintainer re-emerges it can be
resurrected from Git history.

Closes: #8836
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
2022-05-16 10:10:16 +02:00
Daniel Stenberg
8e22fc68e7
scripts: move three scripts from lib/ to scripts/
Move checksrc.pl, firefox-db2pem.sh and mk-ca-bundle.pl since they don't
particularly belong in lib/

Also created an EXTRA_DIST= in scripts/Makefile.am instead of specifying
those files in the root Makefile.am

Closes #8625
2022-03-23 15:26:11 +01:00
Daniel Stenberg
3b16575ae9
netware: remove support
There are no current users and no Netware related changes done in the
code for over 13 years is a clear sign this is abandoned.

Closes #8358
2022-01-31 13:40:26 +01:00
Daniel Stenberg
ffb634d4ef
tool_listhelp: easier to generate with gen.pl
tool_listhelp.c is now a separate file with only the command line --help
output, exactly as generated by gen.pl. This makes it easier to generate
updates according to what's in the docs/cmdline-opts docs.

  cd $srcroot/docs/cmdline-opts
  ./gen.pl listhelp *.d > $srcroot/src/tool_listhelp.c

With a configure build, this also works:

  make -C src listhelp

Closes #7787
2021-09-30 17:50:48 +02:00
Daniel Stenberg
265b14d6b3
metalink: remove
Warning: this will make existing curl command lines that use metalink to
stop working.

Reasons for removal:

1. We've found several security problems and issues involving the
   metalink support in curl. The issues are not detailed here. When
   working on those, it become apparent to the team that several of the
   problems are due to the system design, metalink library API and what
   the metalink RFC says. They are very hard to fix on the curl side
   only.

2. The metalink usage with curl was only very briefly documented and was
   not following the "normal" curl usage pattern in several ways, making
   it surprising and non-intuitive which could lead to further security
   issues.

3. The metalink library was last updated 6 years ago and wasn't so
   active the years before that either. An unmaintained library means
   there's a security problem waiting to happen. This is probably reason
   enough.

4. Metalink requires an XML parsing library, which is complex code (even
   the smaller alternatives) and to this day often gets security
   updates.

5. Metalink is not a widely used curl feature. In the 2020 curl user
   survey, only 1.4% of the responders said that they'd are using it. In
   2021 that number was 1.2%. Searching the web also show very few
   traces of it being used, even with other tools.

6. The torrent format and associated technology clearly won for
   downloading large files from multiple sources in parallel.

Cloes #7176
2021-06-07 08:14:25 +02:00
Daniel Stenberg
4d2f800677
curl.se: new home
Closes #6172
2020-11-04 23:59:47 +01:00
Daniel Stenberg
bbf8cae44d
build: drop support for building with Watcom
These files are not maintained, they seem to have no users, Watcom
compilers look like not having users nor releases anymore.

Closes #5918
2020-09-05 21:51:37 +02:00
Daniel Stenberg
cf5aa92043
src/makefile: fix uncompressed hugehelp.c generation
Regression from 5cf5d57ab9 (7.64.1)

Fixed-by: Lance Ware
Fixes #4176
Closes #4177
2019-08-01 07:46:09 +02:00
Daniel Stenberg
5cf5d57ab9
makefile: make checksrc and hugefile commands "silent"
... to match the style already used for compiling, linking
etc. Acknowledges 'make V=1' to enable verbose.

Closes #3681
2019-03-14 20:11:24 +01:00
Daniel Stenberg
c543da9a50
curl: remove MANUAL from -M output
... and remove it from the dist tarball. It has served its time, it
barely gets updated anymore and "everything curl" is now convering all
this document once tried to include, and does it more and better.

In the compressed scenario, this removes ~15K data from the binary,
which is 25% of the -M output.

It remains in the git repo for now for as long as the web site builds a
page using that as source. It renders poorly on the site (especially for
mobile users) so its not even good there.

Closes #3587
2019-02-20 08:20:27 +01:00
Daniel Stenberg
179311ec37
configure: rewrite --enable-code-coverage
The previously used ax_code_coverage.m4 is not license compatible and
must not be used.

Reported-by: William A. Rowe Jr
Fixes #3497
Closes #3499
2019-01-26 00:29:50 +01:00
Daniel Stenberg
d8852d0868
src/Makefile: make 'tidy' target work for metalink builds 2019-01-14 09:12:52 +01:00
Daniel Stenberg
be20814191
Makefile: add 'tidy' target that runs clang-tidy
Available in the root, src and lib dirs.

Closes #3163
2018-10-27 15:59:38 +02:00
Viktor Szakats
b801b453af whitespace fixes
- replace tabs with spaces where possible
- remove line ending spaces
- remove double/triple newlines at EOF
- fix a non-UTF-8 character
- cleanup a few indentations/line continuations
  in manual examples

Closes https://github.com/curl/curl/pull/3037
2018-09-23 22:24:02 +00:00
Daniel Stenberg
aca1aba0bd
build: remove the Borland specific makefiles
According to the user survey 2018, not even one out of 670 users use
them. Nobody on the mailing list spoke up for them either.

Closes #2629
2018-06-02 11:23:40 +02:00
Ryan Winograd
793e831bbf make: fix docs build on OpenBSD
Ref: #1591
2017-07-10 13:54:02 +02:00
Daniel Stenberg
d24838d4da make: build the docs subdir only from within src
... and don't build at all in include

Prompted-by-work-by: Simon Warta
Ref: #1590
Closes #1591
2017-06-30 17:09:01 +02:00
Simon Warta
8621b61045 automake: use $(MKHELP) variable instead if constant mkhelp.pl
this improves symmetry with the rule above
2017-06-19 12:28:39 +02:00
Daniel Stenberg
73a2fcea0b includes: remove curl/curlbuild.h and curl/curlrules.h
Rely entirely on curl/system.h now.

Introduced in Aug 2008 with commit 14240e9e10. Now gone.

Fixes #1456
2017-06-14 11:07:33 +02:00
Daniel Stenberg
f6e0f4556e build: provide easy code coverage measuring
Closes #1528
2017-06-02 13:15:06 +02:00
Dan Fandrich
80a87e8abc Makefile: avoid use of GNU-specific form of $<
$< is only allowed in implicit rules in some non-GNU makes (e.g. BSD,
AIX) so avoid use elsewhere by referencing the dependent curl.1 file
directly instead. This is somewhat tricky because the file is supplied
in the packaged tar ball (but not in git) but must still be able to be
rebuilt when its dependencies change. The right thing must happen in
both tar ball and git source trees, as well as in both in-tree and
out-of-tree builds.
2017-04-24 21:38:11 +02:00
Daniel Stenberg
7c145bb2a0 Revert "src/Makefile.am: avoid explicit $<"
This reverts commit 5b4cbcf11d.

Since it broke out-of-tree builds from tarballs. See discussion in #1432
2017-04-20 09:16:12 +02:00