1 dnl Process this file with autoconf to produce a configure script.
2 dnl
3 dnl This is the libJUNOS configure script.
4 dnl
5 dnl Copyright (C) 2012 Sebastian 'tokkee' Harl <sh@tokkee.org>
6 dnl All rights reserved.
7 dnl
8 dnl Redistribution and use in source and binary forms, with or without
9 dnl modification, are permitted provided that the following conditions
10 dnl are met:
11 dnl 1. Redistributions of source code must retain the above copyright
12 dnl notice, this list of conditions and the following disclaimer.
13 dnl 2. Redistributions in binary form must reproduce the above copyright
14 dnl notice, this list of conditions and the following disclaimer in the
15 dnl documentation and/or other materials provided with the distribution.
16 dnl
17 dnl THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 dnl ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 dnl TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 dnl PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
21 dnl CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22 dnl EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 dnl PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24 dnl OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 dnl WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 dnl OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
27 dnl ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 AC_INIT([JUNOScript client library],[m4_esyscmd(./version-gen.sh)],
30 [sh@tokkee.org],
31 [libJUNOS],
32 [http://git.tokkee.org/?p=libjunos.git])
33 PACKAGE_MAINTAINER="Sebastian 'tokkee' Harl <sh@tokkee.org>"
34 AC_DEFINE_UNQUOTED([PACKAGE_MAINTAINER], ["$PACKAGE_MAINTAINER"],
35 [Define to the name of the maintainer of this package.])
36 AC_CONFIG_SRCDIR([src/junosc.c])
37 AC_CONFIG_HEADERS([src/config.h])
38 AC_PREFIX_DEFAULT([/opt/libjunos])
40 AM_INIT_AUTOMAKE([foreign -Wall])
42 AC_LANG(C)
44 AC_SYS_LARGEFILE
46 AC_PROG_CC
47 AC_PROG_CPP
48 AC_PROG_INSTALL
49 AC_PROG_LN_S
50 AC_PROG_MAKE_SET
52 AM_PROG_CC_C_O
54 AC_FUNC_STRERROR_R
56 m4_ifdef([LT_INIT],
57 [
58 LT_INIT
59 ],
60 # else
61 # (older libtools)
62 [
63 AC_PROG_LIBTOOL
64 ]
65 )
67 PKG_PROG_PKG_CONFIG
69 test_cc_flags() {
70 AC_LANG_CONFTEST([AC_LANG_PROGRAM([[ ]], [[ ]])])
71 $CC -c conftest.c $CFLAGS $@ > /dev/null 2> /dev/null
72 ret=$?
73 rm -f conftest.o
74 return $ret
75 }
77 m4_divert_once([HELP_ENABLE], [
78 Build options:])
80 dnl Optionally stick to standard C99 and POSIX:2001 as close as possible.
81 AC_ARG_ENABLE([standards],
82 AS_HELP_STRING([--enable-standards],
83 [C99 / POSIX standards compliance mode @<:@default=no@:>@]),
84 [enable_standards="$enableval"],
85 [enable_standards="no"])
87 if test "x$enable_standards" = "xyes"; then
88 AC_DEFINE([_ISOC99_SOURCE], 1,
89 [Define to enforce ISO/IEC 9899:1999 (C99) compliance.])
90 AC_DEFINE([_POSIX_C_SOURCE], 200112L,
91 [Define to enforce IEEE 1003.1-2001 (POSIX:2001) compliance.])
92 AC_DEFINE([_XOPEN_SOURCE], 600,
93 [Define to enforce X/Open 6 (XSI) compliance.])
94 AC_DEFINE([_REENTRANT], 1,
95 [Define to enable reentrant interfaces.])
96 AC_DEFINE([_THREAD_SAFE], 1,
97 [Define to enable reentrant interfaces.])
99 for flag in -std=c99 -pedantic; do
100 AC_MSG_CHECKING([whether $CC accepts $flag])
102 if test_cc_flags $flag; then
103 CFLAGS="$CFLAGS $flag"
104 AC_MSG_RESULT([yes])
105 else
106 AC_MSG_RESULT([no])
107 fi
108 done
109 fi
111 dnl Hardening (see e.g. http://wiki.debian.org/Hardening for a motivation).
112 AC_DEFINE([_FORTIFY_SOURCE], 2,
113 [Define to enable protection against static sized buffer overflows.])
114 AC_ARG_ENABLE([hardening],
115 AS_HELP_STRING([--disable-hardening],
116 [hardening options @<:@default=yes@:>@]),
117 [enable_hardening="$enableval"],
118 [enable_hardening="yes"])
120 if test "x$enable_hardening" = "xyes"; then
121 hardening=0
122 hardening_tests=0
123 for flag in -Wformat -Wformat-security; do
124 hardening_tests=$(($hardening_tests + 1))
125 AC_MSG_CHECKING([whether $CC accepts $flag])
127 if test_cc_flags $flag; then
128 CFLAGS="$CFLAGS $flag"
129 hardening=$(($hardening + 1))
130 AC_MSG_RESULT([yes])
131 else
132 AC_MSG_RESULT([no])
133 fi
134 done
135 if test $hardening -ne $hardening_tests; then
136 AC_MSG_WARN(
137 [Some hardening options are not supported by your compiler!])
138 fi
139 fi
141 dnl Strict checking for potential problems.
142 AC_ARG_ENABLE([strict-checks],
143 AS_HELP_STRING([--disable-strict-checks],
144 [strict compiler checks @<:@default=yes@:>@]),
145 [enable_strict_checks="$enableval"],
146 [enable_strict_checks="yes"])
148 STRICT_CFLAGS=""
149 for flag in -Wall -Werror; do
150 AC_MSG_CHECKING([whether $CC accepts $flag])
152 if test_cc_flags $flag; then
153 STRICT_CFLAGS="$STRICT_CFLAGS $flag"
154 AC_MSG_RESULT([yes])
155 else
156 AC_MSG_RESULT([no])
157 fi
158 done
160 if test "x$enable_strict_checks" = "xyes"; then
161 for flag in -Wextra \
162 -Wbad-function-cast \
163 -Wcast-align \
164 -Wcast-qual \
165 -Wconversion \
166 -Wdeclaration-after-statement \
167 -Wmissing-prototypes \
168 -Wpointer-arith \
169 -Wshadow \
170 -Wstrict-prototypes \
171 -Wunreachable-code; do
172 AC_MSG_CHECKING([whether $CC accepts $flag])
174 if test_cc_flags $flag; then
175 STRICT_CFLAGS="$STRICT_CFLAGS $flag"
176 AC_MSG_RESULT([yes])
177 else
178 AC_MSG_RESULT([no])
179 fi
180 done
181 fi
182 AC_SUBST([STRICT_CFLAGS])
184 AC_CHECK_HEADERS(libgen.h)
186 dnl Check for dependencies.
187 build_documentation="yes"
189 have_xsltproc="yes"
190 AC_PATH_PROG([XSLTPROC], [xsltproc])
191 if test "x$XSLTPROC" = "x"; then
192 have_xsltproc="no"
193 build_documentation="no (missing xsltproc)"
194 fi
196 have_a2x="yes"
197 AC_PATH_PROG([A2X], [a2x])
198 if test "x$A2X" = "x"; then
199 have_a2x="no"
200 build_documentation="no (missing a2x)"
201 fi
202 AC_SUBST([A2X])
204 AM_CONDITIONAL([BUILD_DOCUMENTATION], test "x$build_documentation" = "xyes")
206 PKG_CHECK_MODULES([LIBSSH2], [libssh2])
207 LIBSSH2_VERSION=`$PKG_CONFIG --modversion libssh2`
208 LIBSSH2_IDIRS=`$PKG_CONFIG --cflags-only-I libssh2`
210 PKG_CHECK_MODULES([LIBXML2], [libxml-2.0])
211 LIBXML2_VERSION=`$PKG_CONFIG --modversion libxml-2.0`
212 LIBXML2_IDIRS=`$PKG_CONFIG --cflags-only-I libxml-2.0`
214 dnl Try to ignore compiler warnings caused by third-party headers
215 for flag in $LIBSSH2_IDIRS $LIBXML2_IDIRS; do
216 I_dir=${flag#-I}
218 flag="-isystem $I_dir"
219 AC_MSG_CHECKING([whether $CC accepts $flag])
220 if test_cc_flags "$flag"; then
221 STRICT_CFLAGS="$STRICT_CFLAGS $flag"
222 AC_MSG_RESULT([yes])
223 else
224 AC_MSG_RESULT([no])
225 fi
226 done
228 AC_CONFIG_FILES([Makefile doc/Makefile src/Makefile])
229 AC_OUTPUT
231 BUILD_DATE="`date --utc '+%F %T'` (UTC)"
233 AC_MSG_RESULT()
234 AC_MSG_RESULT([$PACKAGE_NAME has been configured successfully.])
235 AC_MSG_RESULT()
236 AC_MSG_RESULT([Run 'make' to compile the software and use 'make install' to])
237 AC_MSG_RESULT([install the package into $prefix.])
238 AC_MSG_RESULT()
239 AC_MSG_RESULT([Configuration summary:])
240 AC_MSG_RESULT()
241 AC_MSG_RESULT([ package version: $PACKAGE_VERSION])
242 AC_MSG_RESULT([ build date: $BUILD_DATE])
243 AC_MSG_RESULT()
244 AC_MSG_RESULT([ Tools:])
245 AC_MSG_RESULT([ AsciiDoc (a2x): . . . . . . $have_a2x])
246 AC_MSG_RESULT([ xsltproc: . . . . . . . . . $have_xsltproc])
247 AC_MSG_RESULT()
248 AC_MSG_RESULT([ Libraries:])
249 AC_MSG_RESULT([ libssh2: . . . . . . . . . $LIBSSH2_VERSION])
250 AC_MSG_RESULT([ libxml2: . . . . . . . . . $LIBXML2_VERSION])
251 AC_MSG_RESULT()
252 AC_MSG_RESULT([ Features:])
253 AC_MSG_RESULT([ documentation: . . . . . . $build_documentation])
254 AC_MSG_RESULT([ SSH access: . . . . . . . . yes])
255 AC_MSG_RESULT()
256 AC_MSG_RESULT([This package is maintained by $PACKAGE_MAINTAINER.])
257 AC_MSG_RESULT([Please report bugs to $PACKAGE_BUGREPORT.])
258 AC_MSG_RESULT()