dnl
dnl  Copyright (C) 2023  CismonX <admin@cismon.net>
dnl
dnl  Copying and distribution of this file, with or without modification,
dnl  are permitted in any medium without royalty,
dnl  provided the copyright notice and this notice are preserved.
dnl  This file is offered as-is, without any warranty.
dnl

dnl
dnl  ARIF_ARG_ENABLE(feature, default-value, description, [extra-msg],
dnl                  [action-if-enabled], [action-if-disabled])
dnl
dnl  Provides an option to enable or disable a feature.
dnl
AC_DEFUN([ARIF_ARG_ENABLE], [
    m4_pushdef([arg_action_], m4_if([$2], [no], [enable], [disable]))
    m4_pushdef([enable_var_], [enable_]m4_translit([$1], [-+.], [___]))
    AC_MSG_CHECKING(m4_normalize([if $3 is enabled]))
    AC_ARG_ENABLE([$1], m4_normalize([
        AS_HELP_STRING([--]arg_action_[-$1], arg_action_ [$3 $4])
    ]), [], [
        AS_VAR_SET(enable_var_, [$2])
    ])
    AS_VAR_IF(enable_var_, [no], [
        AC_MSG_RESULT([no])
        $6
    ], [
        AC_MSG_RESULT([yes])
        $5
    ])
    m4_popdef([arg_action_])
    m4_popdef([enable_var_])
])

dnl
dnl  ARIF_CHECK_PKG(package, version, package-name, [action-if-not-given],
dnl                 [action-if-with], [action-if-without])
dnl
dnl  Checks if a package exists with `pkg-config', and provides option for
dnl  the configure script to specify the package's custom install location.
dnl
AC_DEFUN([ARIF_CHECK_PKG], [
    m4_pushdef([with_var_], [with_]m4_translit([$1], [-+.], [___]))
    AC_ARG_WITH([$1], m4_normalize([
        AS_HELP_STRING(
            [--with-$1[[=PKGCONFIGDIR]]], [pkg-config search path for $3])
    ]), [], [$4])
    AS_VAR_IF(with_var_, [no], [$6], [
        AS_VAR_SET([SAVED_PKG_CONFIG_PATH_], ["${PKG_CONFIG_PATH}"])
        AS_VAR_IF(with_var_, [yes], [], [
            AS_VAR_SET([PKG_CONFIG_PATH], ["${with_$1}:${PKG_CONFIG_PATH}"])
        ])
        export PKG_CONFIG_PATH
        PKG_CHECK_MODULES(m4_toupper([$1]), [$1 $2], [$5])
        AS_VAR_SET([PKG_CONFIG_PATH], ["${SAVED_PKG_CONFIG_PATH_}"])
    ])
    m4_popdef([with_var_])
])