dnl
dnl DNS Service Discovery (aka Bonjour) stuff for CUPS.
dnl
dnl Copyright © 2021-2022 by OpenPrinting.
dnl Copyright © 2007-2019 by Apple Inc.
dnl
dnl Licensed under Apache License v2.0. See the file "LICENSE" for more
dnl information.
dnl
AC_ARG_WITH([dnssd], AS_HELP_STRING([--with-dnssd=...], [enable DNS Service Discovery support (avahi, mdnsresponder, no, yes)]))
AS_IF([test x$with_dnssd = x], [
with_dnssd="yes"
], [test "$with_dnssd" != avahi -a "$with_dnssd" != mdnsresponder -a "$with_dnssd" != no -a "$with_dnssd" != yes], [
AC_MSG_ERROR([Unsupported --with-dnssd value "$with_dnssd".])
])
AC_ARG_WITH([dnssd_libs], AS_HELP_STRING([--with-dnssd-libs], [set directory for DNS Service Discovery library]), [
LDFLAGS="-L$withval $LDFLAGS"
DSOFLAGS="-L$withval $DSOFLAGS"
])
AC_ARG_WITH([dnssd_includes], AS_HELP_STRING([--with-dnssd-includes], [set directory for DNS Service Discovery header files]), [
CFLAGS="-I$withval $CFLAGS"
CPPFLAGS="-I$withval $CPPFLAGS"
])
DNSSDLIBS=""
DNSSD_BACKEND=""
IPPFIND_BIN=""
IPPFIND_MAN=""
dnl First try using mDNSResponder...
AS_IF([test $with_dnssd = yes -o $with_dnssd = mdnsresponder], [
AC_CHECK_HEADER([dns_sd.h], [
AS_CASE(["$host_os_name"], [darwin*], [
# Darwin and macOS...
with_dnssd="mdnsresponder"
AC_DEFINE([HAVE_DNSSD], [1], [Have DNS-SD support?])
AC_DEFINE([HAVE_MDNSRESPONDER], [1], [Have mDNSResponder library?])
DNSSD_BACKEND="dnssd"
IPPFIND_BIN="ippfind"
IPPFIND_MAN="ippfind.1"
], [*], [
# All others...
AC_MSG_CHECKING([for current version of dns_sd library])
SAVELIBS="$LIBS"
LIBS="$LIBS -ldns_sd"
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([[#include <dns_sd.h>]], [[
int constant = kDNSServiceFlagsShareConnection;
unsigned char txtRecord[100];
uint8_t valueLen;
TXTRecordGetValuePtr(sizeof(txtRecord), txtRecord, "value", &valueLen);
]])
], [
AC_MSG_RESULT([yes])
with_dnssd="mdnsresponder"
AC_DEFINE([HAVE_DNSSD], [1], [Have DNS-SD support?])
AC_DEFINE([HAVE_MDNSRESPONDER], [1], [Have mDNSResponder library?])
DNSSDLIBS="-ldns_sd"
DNSSD_BACKEND="dnssd"
IPPFIND_BIN="ippfind"
IPPFIND_MAN="ippfind.1"
PKGCONFIG_LIBS_STATIC="$PKGCONFIG_LIBS_STATIC $DNSSDLIBS"
], [
AC_MSG_RESULT([no])
AS_IF([test $with_dnssd = mdnsresponder], [
AC_MSG_ERROR([--with-dnssd=mdnsresponder specified but dns_sd library not present.])
])
])
LIBS="$SAVELIBS"
])
])
])
dnl Then try Avahi...
AS_IF([test $with_dnssd = avahi -o $with_dnssd = yes], [
AS_IF([test "x$PKGCONFIG" = x], [
AS_IF([test $with_dnssd = avahi], [
AC_MSG_ERROR([Avahi requires pkg-config.])
])
], [
AC_MSG_CHECKING([for Avahi client])
AS_IF([$PKGCONFIG --exists avahi-client], [
AC_MSG_RESULT([yes])
CFLAGS="$CFLAGS `$PKGCONFIG --cflags avahi-client`"
DNSSDLIBS="`$PKGCONFIG --libs avahi-client`"
DNSSD_BACKEND="dnssd"
IPPFIND_BIN="ippfind"
IPPFIND_MAN="ippfind.1"
PKGCONFIG_REQUIRES="$PKGCONFIG_REQUIRES avahi-client"
AC_DEFINE([HAVE_AVAHI], [1], [Have Avahi client library?])
AC_DEFINE([HAVE_DNSSD], [1], [Have DNS-SD support?])
], [
AC_MSG_RESULT([no])
AS_IF([test $with_dnssd = avahi], [
AC_MSG_ERROR([--with-dnssd=avahi specified but Avahi client not present.])
])
])
])
])
AC_SUBST([DNSSDLIBS])
AC_SUBST([DNSSD_BACKEND])
AC_SUBST([IPPFIND_BIN])
AC_SUBST([IPPFIND_MAN])
