.local/bin/emacs-build


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#!/bin/bash

set -eux

make="make -j$(nproc --all)"
configure_flags=(
    --with-cairo
    --with-gconf
    --with-sqlite3
    --with-xinput2
)

is-rolling-distro ()
{
    (
        . /etc/os-release
        case "${ID}"
        in
            opensuse-tumbleweed) return 0;;
        esac
        return 1
    )
}

if ! is-rolling-distro
then
    cachedir=${XDG_CACHE_HOME:-~/.cache}/emacs
    test -d "${cachedir}" || mkdir -p "${cachedir}"

    thistree=${PWD#~}
    cachefile=${cachedir}/config${thistree//\//,}

    configure_flags=(--cache-file="${cachefile}" "${configure_flags[@]}")
fi

if ! test -f Makefile
then
        ${make} configure
fi

check-config ()
{
    if ! test -f src/config.h
    then
        return 1
    fi

    local pattern="#define EMACS_CONFIG_OPTIONS \"${configure_flags[@]}\""
    grep "${pattern}" src/config.h
}

if ! check-config
then
    ./configure "${configure_flags[@]}"
fi

${make} "$@"