@@ -869,10 +869,13 @@
 	OBJCFLAGS="$old_OBJCFLAGS"
 ])
 
 AC_CHECK_FUNCS([sysconf gmtime_r localtime_r nanosleep fcntl])
 
+AC_CHECK_HEADERS(xlocale.h)
+AC_CHECK_FUNCS([strtod_l strtof_l vasprintf_l])
+
 AC_CHECK_FUNC(pipe, [
 	AC_DEFINE(OF_HAVE_PIPE, 1, [Whether we have pipe()])
 ])
 
 AC_ARG_ENABLE(sockets,