summaryrefslogtreecommitdiffstats
path: root/configure
blob: 655fd826595743d94008f95128cbccf8460c6482 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
#! /bin/sh
#
# opkhelper
# configure
# Configuration script to generate Makefile.
#
# Copyright (C) 2012 Patrick "P. J." McDermott
#
# This program 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.
#
# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

PACKAGE='opkhelper'
VERSION='0.1.0'

print_usage()
{
	printf 'Usage: %s [OPTION]...\n' "$1"
}

print_help()
{
	cat <<EOF
\`configure' configures ${PACKAGE} ${VERSION} to adapt to ONE kind of system.

$(print_usage "${1}")

Configuration:
  -h, --help            display this help and exit
  -V, --version         display version information and exit
  -q, --quiet           do not print \`checking ...' messages
      --srcdir=SRCDIR   find the scripts in SRCDIR
                        default: configure dir

Installation directories:
  --prefix=PREFIX       install files under PREFIX
                        default: /usr/local
  --bindir=BINDIR       install scripts in BINDIR
                        default: PREFIX/bin
EOF
}

print_version()
{
	cat <<EOF
${PACKAGE} ${VERSION} configure
Not generated by GNU Autoconf

Copyright (C) 2012 Patrick "P. J." McDermott
License: GNU GPL version 3 or later <http://www.gnu.org/licenses/gpl.html>.
This configure script is free software: you can redistribute and/or modify it.
There is NO WARRANTY, to the extent permitted by law.
EOF
}

opts=$(getopt -n "${0}" -o 'hVq' -l 'help,version,quiet' \
	-l 'srcdir:,prefix:,sbindir:' -- "${@}")
if [ ${?} -ne 0 ]; then
	print_usage "${0}" >&2
	exit 1;
fi
eval set -- "${opts}"
while true; do
	case "${1}" in
		-h|--help)
			print_help "${0}"
			exit 0
			;;
		-V|--version)
			print_version
			exit 0
			;;
		-q|--quiet)
			QUIET=true
			shift
			;;
		--srcdir)
			SRCDIR="${2}"
			shift 2
			;;
		--prefix)
			PREFIX="${2}"
			shift 2
			;;
		--bindir)
			# Leave PREFIX unexpanded for now, in case it isn't set yet.
			BINDIR="\${PREFIX}/${2}"
			shift 2
			;;
		--)
			shift
			break
			;;
		*)
			print_usage "${0}" >&2
			exit 1
			;;
	esac
done

if [ -z "${QUIET}" ]; then
	QUIET=false
fi

if [ -z "${SRCDIR}" ]; then
	SRCDIR=$(dirname "${0}")
fi
if [ -z "${PREFIX}" ]; then
	PREFIX=/usr/local
fi
if [ -z "${BINDIR}" ]; then
	BINDIR=${PREFIX}/sbin
fi
# Expand PREFIX if it's there.
eval "BINDIR=${BINDIR}"

find_dependency()
{
	dep=${1}
	var=${2}
	shift 2

	${QUIET} || printf 'checking for %s... ' "${dep}"

	while [ ${#} -gt 0 ]; do
		if [ -f "${1}/${dep}" ]; then
			${QUIET} || printf '%s/%s\n' "${1}" "${dep}"
			eval "${var}=${1}/${dep}"
			return 0
		fi
		shift
	done

	${QUIET} || printf 'not found\n'
	missing_dependencies=true
	return 1
}

missing_dependencies=false

find_dependency sh SHELL /bin
find_dependency install INSTALL /usr/bin

if ${missing_dependencies}; then
	printf '\nSome dependencies could not be found.\n'
	printf 'Please make sure all dependencies are installed and try again.\n\n'
	exit 1
fi

sed_script="
s&@shell@&${SHELL}&
s&@install@&${INSTALL} -c&
s&@srcdir@&${SRCDIR}&
s&@prefix@&${PREFIX}&
s&@bindir@&${BINDIR}&"

# Replace configuration variables in Makefile.in
sed "$sed_script" ${SRCDIR}/Makefile.in > Makefile

printf '\nConfiguration complete!\n\n'