/usr/lib/xemacs-21.4.24/x86_64-linux-gnu/include/s/isc4-0.h is in xemacs21-bin 21.4.24-5ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | /* Synched up with: FSF 19.31. */
#include "isc3-0.h"
#undef LIBS_SYSTEM
#define LIBS_SYSTEM "-linet -lcposix"
#define ISC4_0
|