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--- a/configure.in 2023-03-15 22:00:11.725506240 +0100
+++ b/configure.in 2023-03-15 22:00:29.230246904 +0100
@@ -253,6 +253,7 @@
AC_CHECK_FUNC(inet_aton, , [AC_DEFINE(NO_INET_ATON)])
AC_CHECK_FUNC(gethostname, , [AC_DEFINE(NO_GETHOSTNAME)])
+ AC_CHECK_FUNCS([rresvport])
#-------------------------------------------------------------------------
# Check for additional libraries the Tcl/Tk does not check for.
--- a/unix/tclXunixSock.c 2023-03-15 22:02:32.255424538 +0100
+++ b/unix/tclXunixSock.c 2023-03-15 22:03:35.094493443 +0100
@@ -194,10 +194,12 @@
* Allocate a reserved port if requested.
*/
if (getReserved) {
+#ifdef HAVE_RRESVPORT
int port;
if (rresvport (&port) < 0)
goto unixError;
local.sin_port = port;
+#endif
}
/*
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