Martin's autoconf patch works for me on glibc-2.1. I have changed ptsname_r to ptsname as requested. It has been tested lightly: Index: src/process.h =================================================================== RCS file: /usr/CVSroot/XEmacs/xemacs/src/process.h,v retrieving revision 1.8 diff -u -r1.8 process.h --- process.h 1998/04/11 05:37:05 1.8 +++ process.h 1999/09/22 03:40:23 ＠＠ -134,4 +134,12 ＠＠ #endif /* emacs */ +#ifdef HAVE_GETPT +#define PTY_ITERATION +#define PTY_OPEN \ + if ((fd = getpt()) < 0 || grantpt (fd) < 0 || unlockpt (fd) < 0) \ + return -1; +#define PTY_TTY_NAME_SPRINTF strcpy (pty_name, ptsname (fd)); +#endif + #endif /* _XEMACS_PROCESS_H_ */ Index: src/process-unix.c =================================================================== RCS file: /usr/CVSroot/XEmacs/xemacs/src/process-unix.c,v retrieving revision 1.11.2.5 diff -u -r1.11.2.5 process-unix.c --- process-unix.c 1998/12/29 10:54:27 1.11.2.5 +++ process-unix.c 1999/09/22 03:47:27 ＠＠ -265,7 +265,7 ＠＠ if (access (pty_name, 6) != 0) { close (fd); -#if !defined(IRIS) && !defined(__sgi) +#if !defined(IRIS) && !defined(__sgi) && !defined (HAVE_GETPT) continue; #else return -1;