We execute xtgettcap in the parent terminal. Thus we don’t know if it
implements XTGETTCAP, and thus it’s not guaranteed to exit - it may
hang indefinitely waiting for a reply.
Fix by not actually quering anything.
Fixes:
../utils/xtgettcap.c:175:1: error: ‘/home/daniel/src/foot/src/utils/xtgettcap.p/xtgettcap.c.gcda’ profile count data file not found [-Werror=missing-profile]
Grapheme shaping is now enabled by default in foot. However, when
generating the profiling data in PGO builds, this results in skewed
optimizations.
The end result is worse benchmark results regardless of whether
grapheme-shaping is enabled or not (when running the benchmarks).
That locale may not exist. Instead, require the user/build script to
explicitly set an UTF-8 locale.
Document this in INSTALL.md, and in the bundled PKGBUILD.
All scripts are in the ‘pgo’ directory:
* options: command line options for generate-alt-random-writes.py,
sourced by other scripts.
* pgo.sh: top-level script, generates a meson build directory, selects
a PGO method, generates the profiling data, re-configures the meson
build directory and does the final build.
This script is intended to be used by end-users, and shows _how_ to
integrate the script primitives.
Build servers will most likely *not* want to use this script as-is.
* partial.sh: generates alt-random-write data and runs “foot{,client}
--version”, and then feeds the alt-random data to the PGO helper
binary. Does not require a running Wayland session. Touches
$blddir/pgo-ok on success.
* full-inner.sh: runs “footclient --version”, and then a complex
“foot” command that first generates alt-random-write data, and then
“cat’s” it. Requires a running Wayland session, *but*, this script
is usually not called directly (see below). Touches $blddir/pgo-ok
onsucces..
* full-current-session.sh: runs full-inner.sh. That is, it runs foot
in the currently running Wayland session. Note that this will pop up a
foot window.
* full-headless-sway.sh: generates a custom Sway configuration that
exec’s foot-headless-sway-inner.sh (see below), and then executes a
headless Sway. In other words, this script does a *full* PGO build,
but *without* requiring a running Wayland session. Requires Sway >=
1.6.2.
* full-headless-sway.sh: runs full-inner.sh + “swaymsg exit”.
To do a custom PGO build, without using pgo.sh, you’d need to:
CFLAGS=”$CFLAGS -O3” meson --buildtype=release -Db_lto=true
meson configure -Db_pgo=generate
ninja
ninja test (only needed if tllist+fcft are built as subprojects)
Run *one* of:
- partial.sh
- full-current-session.sh
- full-headless-sway.sh
meson configure -D b_pgo=use
ninja
