1 #!/bin/sh
2 #
3 # ngIRCd -- The Next Generation IRC Daemon
4 # Copyright (c)2001-2015 Alexander Barton (alex@barton.de) and Contributors
5 #
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
10 # Please read the file COPYING, README and AUTHORS for more information.
11 #
12 # Usage:
13 #   [VAR=<value>] ./autogen.sh [<configure-args>]
14 #
15 # This script generates the ./configure script using GNU automake and
16 # GNU autoconf. It tries to be smart in finding the correct/usable/available
17 # installed versions of these tools on your system.
18 #
19 # In addition, it enables or disables the "de-ANSI-fication" support of GNU
20 # automake, which is supported up to autoconf 1.11.x an has been removed
21 # in automake 1.12 -- make sure to use a version of automake supporting it
22 # when generating distribution archives!
23 #
24 # The following strategy is used for each of aclocal, autoheader, automake,
25 # and autoconf: first, "tool" (the regular name of the tool, e. g. "autoconf"
26 # or "automake") is checked. If this fails, "tool<major><minor>" (for example
27 # "automake16") and "tool-<major>.<minor>" (e. g. "autoconf-2.54") are tried
28 # with <major> being 2 for tool of GNU autoconf and 1 for tools of automake;
29 # <minor> is tried from 99 to 0. The first occurrence will be used.
30 #
31 # When you pass <configure-args> to autogen.sh it will call the generated
32 # ./configure script on success and pass these parameters to it.
33 #
34 # You can tweak the behaviour using these environment variables:
35 #
36 # - ACLOCAL=<cmd>, AUTOHEADER=<cmd>, AUTOMAKE=<cmd>, AUTOCONF=<cmd>
37 #   Name and optionally path to the particular tool.
38 # - PREFIX=<path>
39 #   Search the GNU autoconf and GNU automake tools in <path> first. If the
40 #   generated ./configure script will be called, pass "--prefix=<path>" to it.
41 # - EXIST=<tool>
42 #   Use <tool> to test for aclocal, autoheader etc. pp. ...
43 #   When not specified, either "type" or "which" is used.
44 # - VERBOSE=1
45 #   Output the detected names of the GNU automake and GNU autoconf tools.
46 # - GO=1
47 #   Call ./configure even if no arguments have been passed to autogen.sh.
48 #
49 # Examples:
50 #
51 # - ./autogen.sh
52 #   Generates the ./configure script.
53 # - GO=1 ./autogen.sh
54 #   Generates the ./configure script and runs it as "./configure".
55 # - VERBOSE=1 ./autogen.sh --with-ident
56 #   Show tool names, generates the ./configure script, and runs it with
57 #   these arguments: "./configure --with-ident".
58 # - ACLOCAL=aclocal-1.6 GO=1 PREFIX=$HOME ./autogen.sh
59 #   Uses "aclocal-1.6" as aclocal tool, generates the ./configure script,
60 #   and runs it with these arguments: "./configure --prefix=$HOME".
61 #
62 
63 Search()
64 {
65 	[ $# -eq 2 ] || exit 1
66 
67 	searchlist="$1"
68 	major="$2"
69 	minor=99
70 
71 	[ -n "$PREFIX" ] && searchlist="${PREFIX}/$1 ${PREFIX}/bin/$1 $searchlist"
72 
73 	for name in $searchlist; do
74 		$EXIST "${name}" >/dev/null 2>&1
75 		if [ $? -eq 0 ]; then
76 			"${name}" --version 2>&1 \
77 			 | grep -v "environment variable" >/dev/null 2>&1
78 			if [ $? -eq 0 ]; then
79 				echo "${name}"
80 				return 0
81 			fi
82 		fi
83 	done
84 
85 	while [ $minor -ge 0 ]; do
86 		for name in $searchlist; do
87 			$EXIST "${name}${major}${minor}" >/dev/null 2>&1
88 			if [ $? -eq 0 ]; then
89 				echo "${name}${major}${minor}"
90 				return 0
91 			fi
92 			$EXIST "${name}-${major}.${minor}" >/dev/null 2>&1
93 			if [ $? -eq 0 ]; then
94 				echo "${name}-${major}.${minor}"
95 				return 0
96 			fi
97 		done
98 		minor=$(expr $minor - 1)
99 	done
100 	return 1
101 }
102 
103 Notfound()
104 {
105 	echo "Error: $* not found!"
106 	echo 'Please install supported versions of GNU autoconf, GNU automake'
107 	echo 'and pkg-config: see the INSTALL file for details.'
108 	exit 1
109 }
110 
111 Run()
112 {
113 	[ "$VERBOSE" = "1" ] && echo " - running \"$*\" ..."
114 	"$@"
115 }
116 
117 # Reset locale settings to suppress warning messages of Perl
118 unset LC_ALL
119 unset LANG
120 
121 # Which command should be used to detect the automake/autoconf tools?
122 [ -z "$EXIST" ] && existlist="type which" || existlist="$EXIST"
123 EXIST=""
124 for t in $existlist; do
125 	$t /bin/ls >/dev/null 2>&1
126 	if [ $? -eq 0 ]; then
127 		rm -f /tmp/test.$$
128 		$t /tmp/test.$$ >/dev/null 2>&1
129 		[ $? -ne 0 ] && EXIST="$t"
130 	fi
131 	[ -n "$EXIST" ] && break
132 done
133 if [ -z "$EXIST" ]; then
134 	echo "Didn't detect a working command to test for the autoconf/automake tools!"
135 	echo "Searchlist: $existlist"
136 	exit 1
137 fi
138 [ "$VERBOSE" = "1" ] && echo "Using \"$EXIST\" to test for tools."
139 
140 # Try to detect the needed tools when no environment variable already
141 # specifies one:
142 echo "Searching for required tools ..."
143 [ -z "$ACLOCAL" ] && ACLOCAL=$(Search aclocal 1)
144 [ "$VERBOSE" = "1" ] && echo " - ACLOCAL=$ACLOCAL"
145 [ -z "$AUTOHEADER" ] && AUTOHEADER=$(Search autoheader 2)
146 [ "$VERBOSE" = "1" ] && echo " - AUTOHEADER=$AUTOHEADER"
147 [ -z "$AUTOMAKE" ] && AUTOMAKE=$(Search automake 1)
148 [ "$VERBOSE" = "1" ] && echo " - AUTOMAKE=$AUTOMAKE"
149 [ -z "$AUTOCONF" ] && AUTOCONF=$(Search autoconf 2)
150 [ "$VERBOSE" = "1" ] && echo " - AUTOCONF=$AUTOCONF"
151 
152 AUTOCONF_VERSION=$(echo "$AUTOCONF" | cut -d'-' -f2-)
153 [ -n "$AUTOCONF_VERSION" ] && [ "$AUTOCONF_VERSION" != "autoconf" ] \
154 	&& export AUTOCONF_VERSION || unset AUTOCONF_VERSION
155 [ "$VERBOSE" = "1" ] && echo " - AUTOCONF_VERSION=$AUTOCONF_VERSION"
156 AUTOMAKE_VERSION=$(echo $AUTOMAKE | cut -d'-' -f2-)
157 [ -n "$AUTOMAKE_VERSION" ] && [ "$AUTOMAKE_VERSION" != "automake" ] \
158 	&& export AUTOMAKE_VERSION || unset AUTOMAKE_VERSION
159 [ "$VERBOSE" = "1" ] && echo " - AUTOMAKE_VERSION=$AUTOMAKE_VERSION"
160 
161 [ $# -gt 0 ] && CONFIGURE_ARGS=" $*" || CONFIGURE_ARGS=""
162 [ -z "$GO" ] && [ -n "$CONFIGURE_ARGS" ] && GO=1
163 
164 # Verify that all tools have been found
165 command -v pkg-config >/dev/null || Notfound pkg-config
166 [ -z "$ACLOCAL" ] && Notfound aclocal
167 [ -z "$AUTOHEADER" ] && Notfound autoheader
168 [ -z "$AUTOMAKE" ] && Notfound automake
169 [ -z "$AUTOCONF" ] && Notfound autoconf
170 
171 AM_VERSION=$($AUTOMAKE --version | head -n 1 | sed -e 's/.* //g')
172 ifs=$IFS; IFS="."; set $AM_VERSION; IFS=$ifs
173 AM_MAJOR="$1"; AM_MINOR="$2"
174 echo "Detected automake $AM_VERSION ..."
175 
176 AM_MAKEFILES="src/ipaddr/Makefile.ng src/ngircd/Makefile.ng src/testsuite/Makefile.ng src/tool/Makefile.ng"
177 
178 # De-ANSI-fication?
179 if [ "$AM_MAJOR" -eq "1" ] && [ "$AM_MINOR" -lt "12" ]; then
180 	# automake < 1.12 => automatic de-ANSI-fication support available
181 	echo " - Enabling de-ANSI-fication support."
182 	sed -e "s|^__ng_PROTOTYPES__|AM_C_PROTOTYPES|g" configure.ng >configure.ac
183 	DEANSI_START=""
184 	DEANSI_END=""
185 else
186 	# automake >= 1.12 => no de-ANSI-fication support available
187 	echo " - Disabling de-ANSI-fication support."
188 	sed -e "s|^__ng_PROTOTYPES__|AC_C_PROTOTYPES|g" configure.ng >configure.ac
189 	DEANSI_START="#"
190 	DEANSI_END=" (disabled by ./autogen.sh script)"
191 fi
192 # Serial test harness?
193 if [ "$AM_MAJOR" -eq "1" ] && [ "$AM_MINOR" -ge "13" ]; then
194 	# automake >= 1.13 => enforce "serial test harness"
195 	echo " - Enforcing serial test harness."
196 	SERIAL_TESTS="serial-tests"
197 else
198 	# automake < 1.13 => no new test harness, nothing to do
199 	# shellcheck disable=SC2034
200 	SERIAL_TEST=""
201 fi
202 
203 sed -e "s|^__ng_Makefile_am_template__|AUTOMAKE_OPTIONS = ${SERIAL_TESTS} ${DEANSI_START}ansi2knr${DEANSI_END}|g" \
204 	src/portab/Makefile.ng >src/portab/Makefile.am
205 for makefile_ng in $AM_MAKEFILES; do
206 	makefile_am=$(echo "$makefile_ng" | sed -e "s|\.ng\$|\.am|g")
207 	sed -e "s|^__ng_Makefile_am_template__|AUTOMAKE_OPTIONS = ${SERIAL_TESTS} ${DEANSI_START}../portab/ansi2knr${DEANSI_END}|g" \
208 		$makefile_ng >$makefile_am
209 done
210 
211 export ACLOCAL AUTOHEADER AUTOMAKE AUTOCONF
212 
213 # Generate files
214 echo "Generating files using \"$AUTOCONF\" and \"$AUTOMAKE\" ..."
215 Run $ACLOCAL && \
216 	Run $AUTOCONF && \
217 	Run $AUTOHEADER && \
218 	Run $AUTOMAKE --add-missing --no-force
219 
220 if [ $? -eq 0 ] && [ -x ./configure ]; then
221 	# Success: if we got some parameters we call ./configure and pass
222 	# all of them to it.
223 	NAME=$(grep PACKAGE_STRING= configure | cut -d"'" -f2)
224 	if [ "$GO" = "1" ]; then
225 		[ -n "$PREFIX" ] && p=" --prefix=$PREFIX" || p=""
226 		c="./configure${p}${CONFIGURE_ARGS}"
227 		echo "Okay, autogen.sh for $NAME done."
228 		echo "Calling \"$c\" ..."
229 		$c
230 		exit $?
231 	else
232 		echo "Okay, autogen.sh for $NAME done."
233 		echo "Now run the \"./configure\" script."
234 		exit 0
235 	fi
236 else
237 	# Failure!?
238 	echo "Error! Check your installation of GNU automake and autoconf!"
239 	exit 1
240 fi
241 
242 # -eof-