"Fossies" - the Fresh Open Source Software archive 
Member "links-1.03/os_dep.h" of archive links-1.03.tar.gz:
#define SYS_UNIX 1
#define SYS_OS2 2
#define SYS_WIN_32 3
#define SYS_BEOS 4
#define SYS_RISCOS 5
#define SYS_ATHEOS 6
#define SYS_SPAD 7
#define SYS_INTERIX 8
/* hardcoded limit of 10 OSes in default.c */
#if defined(__EMX__)
#define OS2
#elif defined(_WIN32) || defined(__CYGWIN__)
#define WIN32
#elif defined(__INTERIX)
#define INTERIX
#elif defined(__BEOS__) || defined(__HAIKU__)
#define BEOS
#elif defined(__riscos__)
#define RISCOS
#elif defined(__ATHEOS__) || defined(__SYLLABLE__)
#define ATHEOS
#elif defined(__SPAD__)
#define SPAD
#else
#define UNIX
#endif
#if defined(OS2) || defined(WIN32) || defined(INTERIX) || defined(BEOS) || defined(RISCOS) || defined(SPAD)
#ifdef UNIX
#undef UNIX
#endif
#endif
#if defined(UNIX)
static inline int dir_sep(char x) { return x == '/'; }
#define NEWLINE "\n"
#define FS_UNIX_RIGHTS
#define FS_UNIX_HARDLINKS
#define FS_UNIX_SOFTLINKS
#define FS_UNIX_USERS
#define SYSTEM_ID SYS_UNIX
#define SYSTEM_NAME "Unix"
#define DEFAULT_SHELL "/bin/sh"
#define GETSHELL getenv("SHELL")
#define SHARED_CONFIG_DIR "/etc/"
#ifdef HAVE_SYS_UN_H
#define USE_AF_UNIX
#else
#define DONT_USE_AF_UNIX
#endif
#define ASSOC_BLOCK
#define ASSOC_CONS_XWIN
#elif defined(OS2)
static inline int dir_sep(char x) { return x == '/' || x == '\\'; }
#define NEWLINE "\r\n"
/*#define NO_ASYNC_LOOKUP*/
#define SYSTEM_ID SYS_OS2
#define SYSTEM_NAME "OS/2"
#define DEFAULT_SHELL "cmd.exe"
#define GETSHELL getenv("COMSPEC")
#define NO_FG_EXEC
#define NO_CTRL_Z
#define DOS_FS
#define NO_FILE_SECURITY
#define NO_FORK_ON_EXIT
#define ASSOC_CONS_XWIN
#define DISABLE_SMB
#elif defined(WIN32)
static inline int dir_sep(char x) { return x == '/' || x == '\\'; }
#define NEWLINE "\r\n"
/*#define NO_ASYNC_LOOKUP*/
#define SYSTEM_ID SYS_WIN_32
#define SYSTEM_NAME "Win32"
#define DEFAULT_SHELL "cmd.exe"
#define GETSHELL getenv("COMSPEC")
#define NO_FG_EXEC
#define NO_CTRL_Z
#define DOS_FS
#define SET_WINDOW_TITLE_UTF_8
#define ASSOC_CONS_XWIN
#define OS_BAD_SIGNALS
#ifndef HAVE_PTHREADS
#define HAVE_PTHREADS
#endif
#elif defined(INTERIX)
static inline int dir_sep(char x) { return x == '/'; }
#define NEWLINE "\n"
#define FS_UNIX_RIGHTS
#define FS_UNIX_HARDLINKS
#define FS_UNIX_SOFTLINKS
#define FS_UNIX_USERS
#define SYSTEM_ID SYS_INTERIX
#define SYSTEM_NAME "Interix"
#define DEFAULT_SHELL "/bin/sh"
#define GETSHELL getenv("SHELL")
#define SHARED_CONFIG_DIR "/etc/"
#ifdef HAVE_SYS_UN_H
#define USE_AF_UNIX
#else
#define DONT_USE_AF_UNIX
#endif
#define ASSOC_BLOCK
#define ASSOC_CONS_XWIN
#elif defined(BEOS)
static inline int dir_sep(char x) { return x == '/'; }
#define NEWLINE "\n"
#define NO_ASYNC_LOOKUP /* async lookup works on BeOS but crashes the Haiku kernel */
#define FS_UNIX_RIGHTS
#define FS_UNIX_SOFTLINKS
#define FS_UNIX_USERS
#define SYSTEM_ID SYS_BEOS
#define SYSTEM_NAME "BeOS"
#define DEFAULT_SHELL "/bin/sh"
#define GETSHELL getenv("SHELL")
#define NO_CTRL_Z
#define SHARED_CONFIG_DIR "/etc/"
#define NO_FORK_ON_EXIT
#define ASSOC_BLOCK
#include <sys/time.h>
#include <sys/types.h>
#ifdef HAVE_NET_SOCKET_H
#include <net/socket.h>
#endif
#include <sys/socket.h>
int be_socket(int, int, int);
int be_connect(int, struct sockaddr *, int);
int be_getpeername(int, struct sockaddr *, int *);
int be_getsockname(int, struct sockaddr *, int *);
int be_listen(int, int);
int be_accept(int, struct sockaddr *, int *);
int be_bind(int, struct sockaddr *, int);
int be_pipe(int *);
int be_read(int, void *, int);
int be_write(int, void *, int);
int be_close(int);
int be_select(int, struct fd_set *, struct fd_set *, struct fd_set *, struct timeval *);
int be_getsockopt(int, int, int, void *, int *);
#elif defined(RISCOS)
static inline int dir_sep(char x) { return x == '/' || x == '\\'; }
#define NEWLINE "\n"
#define SYSTEM_ID SYS_RISCOS
#define SYSTEM_NAME "RISC OS"
#define DEFAULT_SHELL "gos"
#define GETSHELL getenv("SHELL")
#define NO_FG_EXEC
#define NO_FILE_SECURITY
#define NO_FORK_ON_EXIT
#elif defined(ATHEOS)
static inline int dir_sep(char x) { return x == '/'; }
#define NEWLINE "\n"
#define FS_UNIX_RIGHTS
#define FS_UNIX_HARDLINKS
#define FS_UNIX_SOFTLINKS
#define FS_UNIX_USERS
#define SYSTEM_ID SYS_ATHEOS
#define SYSTEM_NAME "Atheos"
#define DEFAULT_SHELL "/bin/sh"
#define GETSHELL getenv("SHELL")
#define SHARED_CONFIG_DIR "/etc/"
#define ASSOC_BLOCK
#elif defined(SPAD)
static inline int dir_sep(char x) { return x == '/'; }
#define NEWLINE "\n"
#define SYSTEM_ID SYS_SPAD
#define SYSTEM_NAME "Spad"
#define DEFAULT_SHELL "LIB.:/SHELL.EXE"
#define GETSHELL "LIB.:/SHELL.EXE"
#define NO_CTRL_Z
#define SHARED_CONFIG_DIR "ETC.:/"
#ifdef HAVE_SYS_UN_H
#define USE_AF_UNIX
#else
#define DONT_USE_AF_UNIX
#endif
#define ASSOC_BLOCK
#define ASSOC_CONS_XWIN
#define NO_FORK_ON_EXIT
#endif
#ifdef FS_UNIX_USERS
#if !defined(HAVE_GETPWUID) || !defined(HAVE_GETGRGID)
#undef FS_UNIX_USERS
#endif
#endif
#if !defined(HAVE_BEGINTHREAD) && !defined(BEOS) && !defined(HAVE_PTHREADS)
#define THREAD_SAFE_LOOKUP
#endif