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utmp: rewrite utmp logging

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This patch generalizes the utmp support, to not only support
libutempter, but also ulog (and in the future, even more interfaces).

* Rename config option main.utempter to main.utmp-helper
* Add meson option -Dutmp-backend=none|libutempter|ulog|auto
* Rename meson option -Ddefault-utempter-path to -Dutmp-default-helper-path
* utmp is no longer detected at compile time, but at runtime instead.

Meson will configure the following pre-processor macros, based on the
selected utmp backend:

* UTMP_ADD - argument to pass to utmp helper when adding a record (starting foot)
* UTMP_DEL - argument to pass to utmp helper when removing a record (exiting foot)
* UTMP_DEL_HAVE_ARGUMENT - if defined, UTMP_DEL expects an extra argument ($WAYLAND_DISPLAY)
* UTMP_DEFAULT_HELPER_PATH - path to the default utmp helper binary

The documentation has been updated to mention which arguments are
passed to the helper binary.

Closes #1314
This commit is contained in:
Daniel Eklöf 2023-05-17 20:51:40 +02:00
parent a2f765b72a
commit e78319fccd
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11 changed files with 159 additions and 58 deletions
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26
INSTALL.md
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@ -45,7 +45,8 @@ subprojects.
* wayland (_client_ and _cursor_ libraries)
* xkbcommon
* utf8proc (_optional_, needed for grapheme clustering)
* libutempter (_optional_, needed for utmp logging)
* libutempter (_optional_, needed for utmp logging on Linux)
* ulog (_optional_, needed for utmp logging on FreeBSD)
* [fcft](https://codeberg.org/dnkl/fcft) [^1]
[^1]: can also be built as subprojects, in which case they are
@ -142,17 +143,18 @@ mkdir -p bld/release && cd bld/release
Available compile-time options:
| Option | Type | Default | Description | Extra dependencies |
|--------------------------------------|---------|-------------------------|-----------------------------------------------------------|--------------------|
| `-Ddocs` | feature | `auto` | Builds and install documentation | scdoc |
| `-Dtests` | bool | `true` | Build tests (adds a `ninja test` build target) | none |
| `-Dime` | bool | `true` | Enables IME support | None |
| `-Dgrapheme-clustering` | feature | `auto` | Enables grapheme clustering | libutf8proc |
| `-Dterminfo` | feature | `enabled` | Build and install terminfo files | tic (ncurses) |
| `-Ddefault-terminfo` | string | `foot` | Default value of `TERM` | none |
| `-Dcustom-terminfo-install-location` | string | `${datadir}/terminfo` | Value to set `TERMINFO` to | None |
| `-Dsystemd-units-dir` | string | `${systemduserunitdir}` | Where to install the systemd service files (absolute) | None |
| `-Ddefault-utempter-path` | feature | `auto` | Default path to utempter binary (‘none’ disables default) | libutempter |
| Option | Type | Default | Description | Extra dependencies |
|--------------------------------------|---------|-------------------------|---------------------------------------------------------------------------------|---------------------|
| `-Ddocs` | feature | `auto` | Builds and install documentation | scdoc |
| `-Dtests` | bool | `true` | Build tests (adds a `ninja test` build target) | None |
| `-Dime` | bool | `true` | Enables IME support | None |
| `-Dgrapheme-clustering` | feature | `auto` | Enables grapheme clustering | libutf8proc |
| `-Dterminfo` | feature | `enabled` | Build and install terminfo files | tic (ncurses) |
| `-Ddefault-terminfo` | string | `foot` | Default value of `TERM` | None |
| `-Dcustom-terminfo-install-location` | string | `${datadir}/terminfo` | Value to set `TERMINFO` to | None |
| `-Dsystemd-units-dir` | string | `${systemduserunitdir}` | Where to install the systemd service files (absolute) | None |
| `-Dutmp-backend` | combo | `auto` | Which utmp backend to use (`none`, `libutempter`, `ulog` or `auto`) | libutempter or ulog |
| `-Dutmp-default-helper-path` | string | `auto` | Default path to utmp helper binary. `auto` selects path based on `utmp-backend` | None |
Documentation includes the man pages, readme, changelog and license
files.