AC_ARG_WITH(libmosquitto, [AS_HELP_STRING([--with-libmosquitto@<:@=PREFIX@:>@], [Path to libmosquitto.])],
[
if test "x$withval" != "xno" && test "x$withval" != "xyes"
then
with_libmosquitto_cppflags="-I$withval/include"
AC_ARG_WITH(libmosquitto, [AS_HELP_STRING([--with-libmosquitto@<:@=PREFIX@:>@], [Path to libmosquitto.])],
[
if test "x$withval" != "xno" && test "x$withval" != "xyes"
then
with_libmosquitto_cppflags="-I$withval/include"