#!/bin/sh

# Copyright © Tavian Barnes <tavianator@tavianator.com>
# SPDX-License-Identifier: 0BSD

# pkg-config wrapper with hardcoded fallbacks

set -eu

MODE=
case "${1:-}" in
    --*)
        MODE="$1"
        shift
esac

if [ $# -lt 1 ]; then
    exit
fi

case "$XNOLIBS" in
    y|1)
        exit 1
esac

if command -v "${XPKG_CONFIG:-}" >/dev/null 2>&1; then
    case "$MODE" in
        "")
            "$XPKG_CONFIG" "$@"
            ;;
        --cflags)
            OUT=$("$XPKG_CONFIG" --cflags "$@")
            if [ "$OUT" ]; then
                printf 'CFLAGS += %s\n' "$OUT"
            fi
            ;;
        --ldflags)
            OUT=$("$XPKG_CONFIG" --libs-only-L --libs-only-other "$@")
            if [ "$OUT" ]; then
                printf 'LDFLAGS += %s\n' "$OUT"
            fi
            ;;
        --ldlibs)
            OUT=$("$XPKG_CONFIG" --libs-only-l "$@")
            if [ "$OUT" ]; then
                printf 'LDLIBS := %s ${LDLIBS}\n' "$OUT"
            fi
            ;;
    esac
else
    LDLIBS=""
    for LIB; do
        case "$LIB" in
            libacl)
                LDLIB=-lacl
                ;;
            libcap)
                LDLIB=-lcap
                ;;
            libselinux)
                LDLIB=-lselinux
                ;;
            liburing)
                LDLIB=-luring
                ;;
            oniguruma)
                LDLIB=-lonig
                ;;
            *)
                printf 'error: Unknown package %s\n' "$LIB" >&2
                exit 1
                ;;
        esac

        case "$MODE" in
            "")
                config/cc.sh "config/$LIB.c" "$LDLIB" || exit $?
                ;;
            --ldlibs)
                LDLIBS="$LDLIBS $LDLIB"
                ;;
        esac
    done

    if [ "$MODE" = "--ldlibs" ] && [ "$LDLIBS" ]; then
        printf 'LDLIBS :=%s ${LDLIBS}\n' "$LDLIBS"
    fi
fi