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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
101 lines
2.1 KiB
Bash
Executable file
101 lines
2.1 KiB
Bash
Executable file
#!/bin/sh
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set -eu
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usage_and_die() {
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echo "Usage: ${0} none|partial|full-current-session|full-headless-sway|[auto] <source-dir> <build-dir> [meson options]"
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exit 1
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}
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[ ${#} -ge 3 ] || usage_and_die
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mode=${1}
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srcdir=$(realpath "${2}")
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blddir=$(realpath "${3}")
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shift 3
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if [ -e "${blddir}" ]; then
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echo "error: ${blddir}: build directory already exists"
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exit 1
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fi
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compiler=other
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do_pgo=no
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CFLAGS="${CFLAGS-} -O3"
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case $(${CC-cc} --version) in
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*GCC*)
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compiler=gcc
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do_pgo=yes
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;;
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*clang*)
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compiler=clang
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if command -v llvm-profdata > /dev/null; then
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do_pgo=yes
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CFLAGS="${CFLAGS} -Wno-ignored-optimization-argument"
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fi
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;;
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esac
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case ${mode} in
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partial|full-current-session|full-headless-sway)
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;;
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none)
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do_pgo=no
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;;
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auto)
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# TODO: once Sway 1.6.2 has been released, prefer
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# full-headless-sway
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if [ -n "${WAYLAND_DISPLAY+x}" ]; then
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mode=full-current-session
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elif command -v sway > /dev/null; then
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mode=full-headless-sway
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else
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mode=partial
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fi
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;;
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*)
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usage_and_die
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;;
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esac
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# echo "source: ${srcdir}"
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# echo "build: ${blddir}"
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# echo "compiler: ${compiler}"
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# echo "mode: ${mode}"
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# echo "CFLAGS: ${CFLAGS}"
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export CFLAGS
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meson "${@}" "${blddir}" "${srcdir}" --buildtype=release -Db_lto=true
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if [ ${do_pgo} = yes ]; then
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find . -name "*.gcda" -delete
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meson configure "${blddir}" -Db_pgo=generate
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ninja -C "${blddir}"
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# If fcft/tllist are subprojects, we need to ensure their tests
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# have been executed, or we’ll get “profile count data file not
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# found” errors.
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ninja -C "${blddir}" test
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# Run mode-dependent script to generate profiling data
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"${srcdir}"/pgo/${mode}.sh "${srcdir}" "${blddir}"
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if [ ${compiler} = clang ]; then
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llvm-profdata \
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merge \
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"${blddir}"/default_*.profraw \
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--output="${blddir}"/default.profdata
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fi
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meson configure "${blddir}" -Db_pgo=use
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fi
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ninja -C "${blddir}"
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