#!/bin/sh -e

[ "$WAYLAND_DISPLAY" ] || {
    printf 'error: foot-pgo requires a running wayland session\n' >&2
    exit 1
}

# Avoid scdoc dependency.
sed "/subdir('doc')/d" meson.build > _
mv -f _ meson.build

# PGO with < -O3 is slow > GCC 10.1.X.
export CFLAGS="$CFLAGS -O3"

# Clang requires this for PGO.
case $("${CC:-cc}" --version) in *clang*)
    export CFLAGS="$CFLAGS -Wno-ignored-optimization-argument"
esac

mkdir -p bld/release
cd bld/release

meson \
    --prefix=/usr \
    --buildtype=release \
    --force-fallback-for=fcft,tllist \
    -Db_lto=true \
    ../..

# Generate PGO data.
{
    meson configure \
        -Db_pgo=generate \

    ninja
    ninja test

    # Required (gives some profiling data).
    ./footclient --version

    set -- \
        "$OLDPWD/scripts/generate-alt-random-writes.py" \
        --scroll \
        --scroll-region \
        --colors-regular \
        --colors-bright \
        --colors-256 \
        --colors-rgb \
        --attr-bold \
        --attr-italic \
        --attr-underline \
        --sixel \
        .pgotmp

    ./foot \
        --config=/dev/null \
        --term=xterm \
        sh -c "$* && cat .pgotmp"
}

# Clang requires this for PGO.
case $("$CC" --version) in *clang*)
    llvm-profdata merge default_*profraw --output=default.profdata
esac

meson configure -Db_pgo=use

ninja
ninja install

rm -rf \
    "$DESTDIR/usr/share/doc" \
    "$DESTDIR/usr/share/zsh" \
    "$DESTDIR/usr/share/fish" \
    "$DESTDIR/usr/share/bash-completion"