/usr/lib/xemacs-21.4.24/x86_64-linux-gnu/include/s/esix.h is in xemacs21-bin 21.4.24-4.
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 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | /* Synched up with: FSF 19.31. */
/* Definitions for ESIX, a variant of v.5.3 for the 386. */
/* These are based on reports for ESIX 5.3.2 D. */
#include "usg5-3.h"
/* Some versions of V.3 have this, but not all. ESIX does. */
#define HAVE_PTYS
#define SYSV_PTYS
/* Have -lg be used for debugging. */
#undef LIBS_DEBUG
#define LIBS_DEBUG "-lg"
/* If using Roell's X server, define X11R4 */
#ifdef X11R4 /* Roell's X server */
#define select sys_select /* Emacs select() not good enough? */
#endif /* X11R4 */
/* ESIX does not need <sys/sioctl.h>, but needs <sys/ptem.h> */
#define NO_SIOCTL_H
#define NEED_PTEM_H
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