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Very old versions of meson did not include the subdirectory name in the
target name, so we started adding various "top-level" custom targets in
subdirectories. This was nice because the main meson.build file wasn't
as cluttered. But then meson started including the subdir name in the
target name. So let's move the definition to the root so we can have all
targets named uniformly.
Until now, update-man-rules assumed that the build directory was
a subdirectory of the project directory. When using mkosi, this is
not the case. We use find instead of git ls-files because git ls-files
does not seem to support outputting absolute paths.
Also, this makes update-man-rules a bit more user-friendly as new manpages
don't have to be added to the git staging area before they are processed by
update-man-rules.py.
This makes use of the developer mode switch: the test is only done
if the user opted-in into developer mode.
Before the man/update-dbus-docs was using the argument form where
we don't need to run find_command(), but that doesn't work with test(),,
so find_command() is used and we get one more line in the config log.
In the beginning, it was rather short, and reasonable to include inline.
Now it is long and unwieldy, let's split it out.
While at it, let's reindent and wrap using our current standards.
The name of the helper didn't match the name of the meson target, which was
always confusing me. With this change, we consistenly use "update" to
re-generate things which we otherwise keep in vc, and "make" for things
which are generated during each build.
The value is obviously bogus, but didn't seem to cause problems so far.
With meson-0.52.0, it causes a hang. The number of aliases is always rather
small (usually just one or two, possibly up to a dozen in a few cases), so
even if this causes some looping, it is strange that it has such a huge impact.
But let's just remove it.
Fixes#13742.
Tested with meson-0.52.0-1.module_f31+6771+f5d842eb.noarch,
meson-0.51.1-1.fc29.noarch.
Man page generation is generally very slow. I prefer to use -Dman=false when
developing systemd, and only build specific pages when introducing changes.
Those two little helper tools make it easy:
$ build/man/man systemd.link
$ build/man/html systemd.link
will show systemd.link.8 and systemd.link.html from the build directory build/.
Meson does not care either way, so let's use the simpler syntax. And files()
already gives a list, so nesting this in a list wouldn't be necessary even
if meson did not flatten everything.
Files which are installed as-is (any .service and other unit files, .conf
files, .policy files, etc), are left as is. My assumption is that SPDX
identifiers are not yet that well known, so it's better to retain the
extended header to avoid any doubt.
I also kept any copyright lines. We can probably remove them, but it'd nice to
obtain explicit acks from all involved authors before doing that.
I want to configure -Dman=false for speed, but be able to build a specific
man page sometimes to check my edits. Commit 5b316b9ea6 broke this by mistake.
Let's adjust the condition to better match the logic of disabling tests only
if xsltproc is really not found.
So far I avoided adding license headers to meson files, but they are pretty
big and important and should carry license headers like everything else.
I added my own copyright, even though other people modified those files too.
But this is mostly symbolic, so I hope that's OK.
The advantage is that is the name is mispellt, cpp will warn us.
$ git grep -Ee "conf.set\('(HAVE|ENABLE)_" -l|xargs sed -r -i "s/conf.set\('(HAVE|ENABLE)_/conf.set10('\1_/"
$ git grep -Ee '#ifn?def (HAVE|ENABLE)' -l|xargs sed -r -i 's/#ifdef (HAVE|ENABLE)/#if \1/; s/#ifndef (HAVE|ENABLE)/#if ! \1/;'
$ git grep -Ee 'if.*defined\(HAVE' -l|xargs sed -i -r 's/defined\((HAVE_[A-Z0-9_]*)\)/\1/g'
$ git grep -Ee 'if.*defined\(ENABLE' -l|xargs sed -i -r 's/defined\((ENABLE_[A-Z0-9_]*)\)/\1/g'
+ manual changes to meson.build
squash! build-sys: use #if Y instead of #ifdef Y everywhere
v2:
- fix incorrect setting of HAVE_LIBIDN2
some run_target() calls were using params from custom_target()
example message:
WARNING: Passed invalid keyword argument "input". This will become a hard error in the future.
New way to call targets:
ninja man/man
ninja man/html
ninja man/update-man-rules
Using conf.set() with a boolean argument does the right thing:
either #ifdef or #undef. This means that conf.set can be used unconditionally.
Previously I used '1' as the placeholder value, and that needs to be changed to
'true' for consistency (under meson 1 cannot be used in boolean context). All
checks need to be adjusted.
The symlinks should be created in the build directory in two cases: when
configuration specifies -Dhtml=true, or when ninja html target is built.
Normally install : {true,false} is used to decide if a target should be built,
but in this case, we cannot use install : true, because, as described in
488477d101, that results in the target file being copied into the
installation directory instead of a symlink. So we need a work-around. To
achieve the first end, the commands to create the symlinks are added as
dependencies of the command to create the html page. To the second end, they
are added as dependencies of the html target.
Follow-up for 488477d101 and 064d9ef0d7.
This adds two somewhat independent rules:
1. to create symlinks to html pages in the build directory
2. to create symlinks in the installation directory
The second part needs to be coded separately, because telling meson to install
the symlinks created in step 1. results in a copy of the target, instead of a
symlink. So step 2. needs to ignore the result of 1. and create the symlink again.
Fixes#5863.
The indentation for emacs'es meson-mode is added .dir-locals.
All files are reindented automatically, using the lasest meson-mode from git.
Indentation should now be fairly consistent.
This doesn't feel as natural, but is more consistent with the boolean options
which require true/false, and allows setting of options without knowing of
which type the option is.
This provides functionality similar to the ./configure --disable-manpages
switch. Man pages are built by default (if xsltproc is found), html pages
are not. Those default can be changed with -Dman=no, -Dhtml=yes/auto.
It is still possible to build one or the either, even if not configured, with
ninja-build man/man and ninja-build man/html.
v2:
- obey conditionals in index/directives list
This is a bit bare-bones, but should work for now. Maybe in the future we'll
have a way to make meson generate it for us, without specifying all the names
by hand.
It's crucial that we can build systemd using VS2010!
... er, wait, no, that's not the official reason. We need to shed old systems
by requring python 3! Oh, no, it's something else. Maybe we need to throw out
345 years of knowlege accumulated in autotools? Whatever, this new thing is
cool and shiny, let's use it.
This is not complete, I'm throwing it out here for your amusement and critique.
- rules for sd-boot are missing. Those might be quite complicated.
- rules for tests are missing too. Those are probably quite simple and
repetitive, but there's lots of them.
- it's likely that I didn't get all the conditions right, I only tested "full"
compilation where most deps are provided and nothing is disabled.
- busname.target and all .busname units are skipped on purpose.
Otherwise, installation into $DESTDIR has the same list of files and the
autoconf install, except for .la files.
It'd be great if people had a careful look at all the library linking options.
I added stuff until things compiled, and in the end there's much less linking
then in the old system. But it seems that there's still a lot of unnecessary
deps.
meson has a `shared_module` statement, which sounds like something appropriate
for our nss and pam modules. Unfortunately, I couldn't get it to work. For the
nss modules, we need an .so version of '2', but `shared_module` disallows the
version argument. For the pam module, it also didn't work, I forgot the reason.
The handling of .m4 and .in and .m4.in files is rather awkward. It's likely
that this could be simplified. If make support is ever dropped, I think it'd
make sense to switch to a different templating system so that two different
languages and not required, which would make everything simpler yet.
v2:
- use get_pkgconfig_variable
- use sh not bash
- use add_project_arguments
v3:
- drop required:true and fix progs/prog typo
v4:
- use find_library('bz2')
- add TTY_GID definition
- define __SANE_USERSPACE_TYPES__
- use join_paths(prefix, ...) is used on all paths to make them all absolute
v5:
- replace all declare_dependency's with []
- add more conf.get guards around optional components
v6:
- drop -pipe, -Wall which are the default in meson
- use compiler.has_function() and compiler.has_header_symbol instead of the
hand-rolled checks.
- fix duplication in 'liblibsystemd' library name
- use the right .sym file for pam_systemd
- rename 'compiler' to 'cc': shorter, and more idiomatic.
v7:
- use ENABLE_ENVIRONMENT_D not HAVE_ENVIRONMENT_D
- rename prefix to prefixdir, rootprefix to rootprefixdir
("prefix" is too common of a name and too easy to overwrite by mistake)
- wrap more stuff with conf.get('ENABLE...') == 1
- use rootprefix=='/' and rootbindir as install_dir, to fix paths under
split-usr==true.
v8:
- use .split() also for src/coredump. Now everything is consistent ;)
- add rootlibdir option and use it on the libraries that require it
v9:
- indentation
v10:
- fix check for qrencode and libaudit
v11:
- unify handling of executable paths, provide options for all progs
This makes the meson build behave slightly differently than the
autoconf-based one, because we always first try to find the executable in the
filesystem, and fall back to the default. I think different handling of
loadkeys, setfont, and telinit was just a historical accident.
In addition to checking in $PATH, also check /usr/sbin/, /sbin for programs.
In Fedora $PATH includes /usr/sbin, (and /sbin is is a symlink to /usr/sbin),
but in Debian, those directories are not included in the path.
C.f. https://github.com/mesonbuild/meson/issues/1576.
- call all the options 'xxx-path' for clarity.
- sort man/rules/meson.build properly so it's stable
