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4b158629 GM |
1 | /* System description header file for Cygwin. |
2 | Copyright (C) 1985, 1986, 1992, 1999, 2002, 2003, 2004, 2005, 2006, | |
3 | 2007, 2008 Free Software Foundation, Inc. | |
2454c12d JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
4b158629 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
2454c12d | 8 | it under the terms of the GNU General Public License as published by |
4b158629 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
2454c12d JB |
11 | |
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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
4b158629 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
2454c12d JB |
19 | |
20 | /* SYSTEM_TYPE should indicate the kind of system you are using. | |
21 | It sets the Lisp variable system-type. */ | |
22 | ||
23 | #define SYSTEM_TYPE "cygwin" | |
24 | ||
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. | |
28 | ||
29 | Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO) | |
30 | ||
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. | |
34 | ||
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. | |
41 | ||
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. */ | |
46 | ||
47 | #undef INTERRUPT_INPUT | |
48 | ||
49 | /* | |
50 | * Define HAVE_TERMIOS if the system provides POSIX-style | |
51 | * functions and macros for terminal control. | |
52 | * | |
53 | * Define HAVE_TERMIO if the system provides sysV-style ioctls | |
54 | * for terminal control. | |
55 | * | |
56 | * Do not define both. HAVE_TERMIOS is preferred, if it is | |
57 | * supported on your system. | |
58 | */ | |
59 | ||
60 | #define HAVE_TERMIOS | |
61 | ||
62 | /* | |
63 | * Define HAVE_PTYS if the system supports pty devices. | |
64 | */ | |
65 | ||
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) | |
82 | ||
83 | /* Define this symbol if your system has the functions bcopy, etc. */ | |
84 | ||
85 | #define BSTRING | |
86 | ||
87 | /* subprocesses should be defined if you want to | |
88 | have code for asynchronous subprocesses | |
89 | (as used in M-x compile and M-x shell). | |
90 | This is generally OS dependent, and not supported | |
91 | under most USG systems. */ | |
92 | ||
93 | #define subprocesses | |
94 | ||
95 | /* Define CLASH_DETECTION if you want lock files to be written | |
96 | so that Emacs can tell instantly when you try to modify | |
97 | a file that someone else has modified in his Emacs. */ | |
98 | ||
99 | #define CLASH_DETECTION | |
100 | ||
101 | /* If the system's imake configuration file defines `NeedWidePrototypes' | |
102 | as `NO', we must define NARROWPROTO manually. Such a define is | |
177c0ea7 | 103 | generated in the Makefile generated by `xmkmf'. If we don't |
2454c12d JB |
104 | define NARROWPROTO, we will see the wrong function prototypes |
105 | for X functions taking float or double parameters. */ | |
106 | ||
107 | #define NARROWPROTO 1 | |
108 | ||
109 | /* used in various places to enable cygwin-specific code changes */ | |
110 | #define CYGWIN 1 | |
111 | ||
112 | #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_p - (FILE)->_bf._base) | |
2454c12d | 113 | #define SYSV_SYSTEM_DIR 1 |
451f03a0 | 114 | #define UNEXEC unexcw.o |
2454c12d JB |
115 | #define POSIX_SIGNALS 1 |
116 | /* force the emacs image to start high in memory, so dll relocation | |
117 | can put things in low memory without causing all sorts of grief for | |
118 | emacs lisp pointers */ | |
119 | #define DATA_SEG_BITS 0x20000000 | |
120 | #define LINKER $(CC) -Wl,--image-base,DATA_SEG_BITS | |
2454c12d JB |
121 | |
122 | /* Use terminfo instead of termcap. Fewer environment variables to | |
123 | go wrong, more terminal types. */ | |
124 | #define TERMINFO | |
125 | ||
126 | #define HAVE_SOCKETS | |
2454c12d JB |
127 | /* Xaw3d causes problems -- might have been fixed by NARROWPROTO |
128 | above, but I haven't tried it */ | |
451f03a0 | 129 | /*#undef HAVE_XAW3D*/ |
2454c12d JB |
130 | |
131 | /* vfork() interacts badly with setsid(), causing ptys to fail to | |
132 | change their controlling terminal */ | |
133 | #define vfork fork | |
134 | ||
179cef48 SM |
135 | /* This should work (at least when compiling with gcc). But I have no way |
136 | or intention to verify or even test it. If you encounter a problem with | |
137 | it, feel free to change this setting, but please add a comment here about | |
138 | why it needed to be changed. */ | |
139 | #define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS | |
140 | ||
9b1a1e62 JR |
141 | /* Virtual addresses of pure and impure space can vary, as on Windows. */ |
142 | #define VIRT_ADDR_VARIES | |
143 | ||
2454c12d | 144 | /* the end */ |
ab5796a9 MB |
145 | |
146 | /* arch-tag: 5ae7ba00-83b0-4ab3-806a-3e845779191b | |
147 | (do not change this comment) */ |