binutils-gdb/readline/sysdep-sysv4.h

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/* System-dependent stuff, for SVR4 systems */
#ifdef __GNUC__
#define alloca __builtin_alloca
#else
#if defined (sparc) && defined (sun)
#include <alloca.h>
#endif
#ifndef alloca /* May be a macro, with args. */
extern char *alloca ();
#endif
#endif
#include <sys/types.h> /* Needed by dirent.h */
#include <sys/stream.h>
#include <sys/ptem.h>
#include <dirent.h>
typedef struct dirent dirent;
/* SVR4 systems should use <termios.h> rather than <termio.h>. */
#define _POSIX_VERSION
/* SVR4 systems need _POSIX_SOURCE defined to suppress 'struct winsize'
definition in <termios.h>, since it's unconditionally defined in
<sys/ptem.h>. */
#define _POSIX_SOURCE