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166 lines
3.2 KiB
166 lines
3.2 KiB
#! /bin/sh
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# autoconf-style configuration script
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#
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set -e
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name=udns
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if [ -f udns.h -a -f udns_resolver.c ] ; then :
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else
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echo "configure: error: sources not found at `pwd`" >&2
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exit 1
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fi
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options="ipv6"
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for opt in $options; do
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eval enable_$opt=
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done
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if [ -f config.status ]; then
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. ./config.status
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fi
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enable() {
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opt=`echo "$1" | sed 's/^--[^-]*-//'`
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case "$opt" in
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ipv6) ;;
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*) echo "configure: unrecognized option \`$1'" >&2; exit 1;;
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esac
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eval enable_$opt=$2
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}
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while [ $# -gt 0 ]; do
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case "$1" in
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--disable-*|--without-*|--no-*) enable "$1" n;;
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--enable-*|--with-*) enable "$1" y;;
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--help | --hel | --he | --h | -help | -hel | -he | -h )
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cat <<EOF
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configure: configure $name package.
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Usage: ./configure [options]
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where options are:
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--enable-option, --with-option --
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enable the named option/feature
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--disable-option, --without-option, --no-option --
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disable the named option/feature
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--help - print this help and exit
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Optional features (all enabled by default if system supports a feature):
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ipv6 - enable/disable IP version 6 (IPv6) support
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EOF
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exit 0
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;;
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*) echo "configure: unknown option \`$1'" >&2; exit 1 ;;
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esac
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shift
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done
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. ./configure.lib
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ac_msg "configure"
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ac_result "$name package"
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ac_prog_c_compiler_v
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ac_prog_ranlib_v
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ac_ign ac_yesno "for getopt()" ac_have GETOPT ac_link <<EOF
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#include <stdio.h>
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extern int optind;
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extern char *optarg;
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extern int getopt(int, char **, char *);
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int main(int argc, char **argv) {
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getopt(argc, argv, "abc");
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return optarg ? optind : 0;
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}
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EOF
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if ac_library_find_v 'socket and connect' "" "-lsocket -lnsl" <<EOF
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int main() { socket(); connect(); return 0; }
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EOF
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then :
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else
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ac_fatal "cannot find libraries needed for sockets"
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fi
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ac_ign \
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ac_yesno "for inet_pton() && inet_ntop()" \
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ac_have INET_PTON_NTOP \
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ac_link <<EOF
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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int main() {
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char buf[64];
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long x = 0;
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inet_pton(AF_INET, &x, buf);
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return inet_ntop(AF_INET, &x, buf, sizeof(buf));
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}
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EOF
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if ac_yesno "for socklen_t" ac_compile <<EOF
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#include <sys/types.h>
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#include <sys/socket.h>
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int foo() { socklen_t len; len = 0; return len; }
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EOF
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then :
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else
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ac_define socklen_t int
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fi
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if [ n != "$enable_ipv6" ]; then
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if ac_yesno "for IPv6" ac_have IPv6 ac_compile <<EOF
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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int main() {
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struct sockaddr_in6 sa;
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sa.sin6_family = AF_INET6;
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return 0;
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}
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EOF
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then :
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elif [ "$enable_ipv6" ]; then
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ac_fatal "IPv6 is requested but not available"
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fi
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fi # !disable_ipv6?
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if ac_yesno "for poll()" ac_have POLL ac_link <<EOF
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#include <sys/types.h>
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#include <sys/poll.h>
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int main() {
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struct pollfd pfd[2];
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return poll(pfd, 2, 10);
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}
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EOF
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then :
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else
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ac_ign ac_yesno "for sys/select.h" ac_have SYS_SELECT_H ac_cpp <<EOF
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#include <sys/types.h>
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#include <sys/select.h>
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EOF
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fi
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ac_config_h
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ac_output Makefile
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ac_msg "creating config.status"
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rm -f config.status
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{
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echo "# automatically generated by configure to hold command-line options"
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echo
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found=
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for opt in $options; do
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eval val=\$enable_$opt
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if [ -n "$val" ]; then
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echo enable_$opt=$val
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found=y
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fi
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done
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if [ ! "$found" ]; then
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echo "# (no options encountered)"
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fi
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} > config.status
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ac_result ok
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ac_result "all done."
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exit 0
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