# Process this file with autoconf to produce a configure script.
#
# Copyright (C) 2013, 2018-2019  Patrick McDermott
#
# This file is part of the ProteanOS Archive Manager.
#
# The ProteanOS Archive Manager is free software: you can redistribute
# it and/or modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# The ProteanOS Archive Manager is distributed in the hope that it
# will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with the ProteanOS Archive Manager.  If not, see
# <http://www.gnu.org/licenses/>.

AC_INIT([ProteanOS Archive Manager], [2.1.0+dev],
	[mailto:proteanos-dev@lists.proteanos.com], [pro-archman],
	[http://www.proteanos.com/dev/pro-archman/])
AC_CONFIG_AUX_DIR([build-aux])
AC_REQUIRE_AUX_FILE([tap-driver.sh])
AC_CONFIG_SRCDIR([src/main.sh])

AM_INIT_AUTOMAKE([gnu check-news dist-bzip2 dist-xz subdir-objects])
AM_SILENT_RULES([yes])

AM_CONDITIONAL([IN_GIT],
	[test -d "${srcdir}/.git" && command -v git >/dev/null 2>&1])

AC_ARG_WITH(
	[sh],
	[AS_HELP_STRING([--with-sh=PATH],
		[POSIX-conformant shell with `local'])],
	dnl This `dnl' is needed to workaround Vim syntax highlighting.
	[
		case "${withval}" in
			'yes'|'')
				AC_MSG_ERROR([--with-sh requires an argument])
				;;
			'no')
				AC_MSG_ERROR([sh is required])
				;;
			*)
				SH="${withval}"
				AC_SUBST([SH])
				;;
		esac
	],
	[
		AC_PATH_PROG([SH], [sh])
		if test -z "${SH}"; then
			AC_MSG_ERROR([sh not found])
		fi
	]
)

AC_ARG_WITH(
	[tar],
	[AS_HELP_STRING([--with-tar=PATH],
		[path to tar utility with `-x', `-z', `-O', and `-f' options
		(e.g. tar from GNU, BusyBox, or libarchive)])],
	dnl This `dnl' is needed to workaround Vim syntax highlighting.
	[
		case "${withval}" in
			'yes'|'')
				AC_MSG_ERROR(
					[--with-tar requires an argument])
				;;
			'no')
				AC_MSG_ERROR([tar is required])
				;;
			*)
				TAR="${withval}"
				AC_SUBST([TAR])
				;;
		esac
	],
	[
		AC_PATH_PROG([TAR], [tar])
		if test -z "${TAR}"; then
			AC_MSG_ERROR([tar not found])
		fi
	]
)
dnl TODO: Test ${TAR} for options support?  How can we do so without also
dnl requiring -c support (missing from BusyBox tar without FEATURE_TAR_CREATE)
dnl to create an archive for testing?
AC_ARG_WITH(
	[md5sum],
	[AS_HELP_STRING([--with-md5sum=PATH], [path to md5sum utility])],
	[
		case "${withval}" in
			'yes'|'')
				AC_MSG_ERROR(
					[--with-md5sum requires an argument])
				;;
			'no')
				AC_MSG_ERROR([md5sum is required])
				;;
			*)
				MD5SUM="${withval}"
				AC_SUBST([MD5SUM])
				;;
		esac
	],
	[
		AC_PATH_PROG([MD5SUM], [md5sum])
		if test -z "${MD5SUM}"; then
			AC_MSG_ERROR([md5sum not found])
		fi
	]
)
AC_ARG_WITH(
	[sha256sum],
	[AS_HELP_STRING([--with-sha256sum=PATH], [path to sha256sum utility])],
	[
		case "${withval}" in
			'yes'|'')
				AC_MSG_ERROR(
					[--with-sha256sum requires an argument])
				;;
			'no')
				AC_MSG_ERROR([sha256sum is required])
				;;
			*)
				SHA256SUM="${withval}"
				AC_SUBST([SHA256SUM])
				;;
		esac
	],
	[
		AC_PATH_PROG([SHA256SUM], [sha256sum])
		if test -z "${SHA256SUM}"; then
			AC_MSG_ERROR([sha256sum not found])
		fi
	]
)
AC_ARG_WITH(
	[gzip],
	[AS_HELP_STRING([--with-gzip=PATH], [path to gzip utility])],
	[
		case "${withval}" in
			'yes'|'')
				AC_MSG_ERROR(
					[--with-gzip requires an argument])
				;;
			'no')
				AC_MSG_ERROR([gzip is required])
				;;
			*)
				GZIP="${withval}"
				AC_SUBST([GZIP])
				;;
		esac
	],
	[
		AC_PATH_PROG([GZIP], [gzip])
		if test -z "${GZIP}"; then
			AC_MSG_ERROR([gzip not found])
		fi
	]
)

#
# usign
#
AC_ARG_WITH(
	[system-usign],
	[AS_HELP_STRING([--with-system-usign[=PATH]], [use system usign])],
	[
		case "${withval}" in
			'yes'|'')
				AC_PATH_PROG([USIGN], [usign])
				if test -z "${USIGN}"; then
					AC_MSG_ERROR([usign not found])
				fi
				embedded_usign=false
				;;
			'no')
				embedded_usign=true
				;;
			*)
				USIGN="${withval}"
				AC_SUBST([USIGN])
				embedded_usign=false
				;;
		esac
	],
	[
		embedded_usign=true
	]
)
AC_ARG_WITH(
	[cmake],
	[AS_HELP_STRING([--with-cmake=PATH], [path to cmake utility])],
	[
		if ${embedded_usign}; then
			case "${withval}" in
				'yes'|'')
					AC_MSG_ERROR([--with-cmake requires an
						argument])
					;;
				'no')
					AC_MSG_ERROR([cmake is required])
					;;
				*)
					CMAKE="${withval}"
					AC_SUBST([CMAKE])
					;;
			esac
		fi
	],
	[
		if ${embedded_usign}; then
			AC_PATH_PROG([CMAKE], [cmake])
			if test -z "${CMAKE}"; then
				AC_MSG_ERROR([cmake not found])
			fi
		fi
	]
)
if ${embedded_usign}; then
	AS_MKDIR_P([3rdparty/usign])
	abs_srcdir="$(cd "${srcdir}" && pwd)"
	(
		cd 3rdparty/usign
		"${CMAKE}" -DUSE_LIBUBOX:BOOL=OFF "${abs_srcdir}/3rdparty/usign"
	)
fi
AM_CONDITIONAL([EMBEDDED_USIGN], [${embedded_usign}])

AC_CONFIG_FILES([Makefile])
AC_CONFIG_FILES([config.sh])
AC_CONFIG_FILES([tests/aux/defs.sh])
AC_OUTPUT()