Add 2009 to copyright years.
[emacs.git] / src / s / cygwin.h
blobec36f0807847854f1be119caf4c409429b556b87
1 /* System description header file for Cygwin.
2 Copyright (C) 1985, 1986, 1992, 1999, 2002, 2003, 2004, 2005, 2006,
3 2007, 2008, 2009 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
20 /* SYSTEM_TYPE should indicate the kind of system you are using.
21 It sets the Lisp variable system-type. */
23 #define SYSTEM_TYPE "cygwin"
25 /* Emacs can read input using SIGIO and buffering characters itself,
26 or using CBREAK mode and making C-g cause SIGINT.
27 The choice is controlled by the variable interrupt_input.
29 Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
31 Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros
32 to indicate whether or not signal-driven I/O is possible. It uses
33 INTERRUPT_INPUT to decide whether to use it by default.
35 SIGIO can be used only on systems that implement it (4.2 and 4.3).
36 CBREAK mode has two disadvantages
37 1) At least in 4.2, it is impossible to handle the Meta key properly.
38 I hear that in system V this problem does not exist.
39 2) Control-G causes output to be discarded.
40 I do not know whether this can be fixed in system V.
42 Another method of doing input is planned but not implemented.
43 It would have Emacs fork off a separate process
44 to read the input and send it to the true Emacs process
45 through a pipe. */
47 #undef INTERRUPT_INPUT
50 * Define HAVE_TERMIOS if the system provides POSIX-style
51 * functions and macros for terminal control.
53 * Define HAVE_TERMIO if the system provides sysV-style ioctls
54 * for terminal control.
56 * Do not define both. HAVE_TERMIOS is preferred, if it is
57 * supported on your system.
60 #define HAVE_TERMIOS
63 * Define HAVE_PTYS if the system supports pty devices.
66 #define HAVE_PTYS
67 #define PTY_ITERATION for (i = 0; i < 1; i++) /* ick */
68 #define PTY_NAME_SPRINTF /* none */
69 #define PTY_TTY_NAME_SPRINTF /* none */
70 #define PTY_OPEN \
71 do \
72 { \
73 int dummy; \
74 SIGMASKTYPE mask; \
75 mask = sigblock (sigmask (SIGCHLD)); \
76 if (-1 == openpty (&fd, &dummy, pty_name, 0, 0)) \
77 fd = -1; \
78 sigsetmask (mask); \
79 emacs_close (dummy); \
80 } \
81 while (0)
83 /* Define this symbol if your system has the functions bcopy, etc. */
85 #define BSTRING
87 /* Define CLASH_DETECTION if you want lock files to be written
88 so that Emacs can tell instantly when you try to modify
89 a file that someone else has modified in his Emacs. */
91 #define CLASH_DETECTION
93 /* If the system's imake configuration file defines `NeedWidePrototypes'
94 as `NO', we must define NARROWPROTO manually. Such a define is
95 generated in the Makefile generated by `xmkmf'. If we don't
96 define NARROWPROTO, we will see the wrong function prototypes
97 for X functions taking float or double parameters. */
99 #define NARROWPROTO 1
101 /* used in various places to enable cygwin-specific code changes */
102 #define CYGWIN 1
104 #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_p - (FILE)->_bf._base)
105 #define SYSV_SYSTEM_DIR 1
106 #define UNEXEC unexcw.o
107 #define POSIX_SIGNALS 1
108 /* force the emacs image to start high in memory, so dll relocation
109 can put things in low memory without causing all sorts of grief for
110 emacs lisp pointers */
111 #define DATA_SEG_BITS 0x20000000
112 #define LINKER $(CC) -Wl,--image-base,DATA_SEG_BITS
114 /* Use terminfo instead of termcap. Fewer environment variables to
115 go wrong, more terminal types. */
116 #define TERMINFO
118 #define HAVE_SOCKETS
120 /* vfork() interacts badly with setsid(), causing ptys to fail to
121 change their controlling terminal */
122 #define vfork fork
124 /* This should work (at least when compiling with gcc). But I have no way
125 or intention to verify or even test it. If you encounter a problem with
126 it, feel free to change this setting, but please add a comment here about
127 why it needed to be changed. */
128 #define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS
130 /* Virtual addresses of pure and impure space can vary, as on Windows. */
131 #define VIRT_ADDR_VARIES
133 /* the end */
135 /* arch-tag: 5ae7ba00-83b0-4ab3-806a-3e845779191b
136 (do not change this comment) */