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b429a4ee GM |
1 | /* conf_post.h --- configure.ac includes this via AH_BOTTOM |
2 | ||
ab422c4d PE |
3 | Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2013 Free Software |
4 | Foundation, Inc. | |
b429a4ee GM |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software: you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation, either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | /* Commentary: | |
22 | ||
23 | Rather than writing this code directly in AH_BOTTOM, we include it | |
24 | via this file. This is so that it does not get processed by | |
25 | autoheader. Eg, any undefs here would otherwise be commented out. | |
26 | */ | |
27 | ||
28 | /* Code: */ | |
29 | ||
476b1b2d GM |
30 | /* Include any platform specific configuration file. */ |
31 | #ifdef config_opsysfile | |
32 | # include config_opsysfile | |
33 | #endif | |
34 | ||
96c06863 PE |
35 | #include <stdbool.h> |
36 | ||
37 | /* The pre-C99 <stdbool.h> emulation doesn't work for bool bitfields. */ | |
38 | #if __STDC_VERSION__ < 199901 | |
39 | typedef unsigned int bool_bf; | |
40 | #else | |
41 | typedef bool bool_bf; | |
42 | #endif | |
43 | ||
476b1b2d | 44 | #ifndef WINDOWSNT |
b429a4ee GM |
45 | /* On AIX 3 this must be included before any other include file. */ |
46 | #include <alloca.h> | |
47 | #if ! HAVE_ALLOCA | |
48 | # error "alloca not available on this machine" | |
49 | #endif | |
476b1b2d | 50 | #endif |
b429a4ee | 51 | |
7456e13f | 52 | #ifndef __has_attribute |
96c06863 | 53 | # define __has_attribute(a) false /* non-clang */ |
7456e13f PE |
54 | #endif |
55 | ||
6a381852 GM |
56 | #ifdef DARWIN_OS |
57 | #ifdef emacs | |
58 | #define malloc unexec_malloc | |
59 | #define realloc unexec_realloc | |
60 | #define free unexec_free | |
6a381852 GM |
61 | #endif |
62 | /* The following solves the problem that Emacs hangs when evaluating | |
63 | (make-comint "test0" "/nodir/nofile" nil "") when /nodir/nofile | |
64 | does not exist. Also, setsid is not allowed in the vfork child's | |
65 | context as of Darwin 9/Mac OS X 10.5. */ | |
66 | #undef HAVE_WORKING_VFORK | |
67 | #define vfork fork | |
68 | #endif /* DARWIN_OS */ | |
69 | ||
aac1c9ac GM |
70 | /* We have to go this route, rather than the old hpux9 approach of |
71 | renaming the functions via macros. The system's stdlib.h has fully | |
72 | prototyped declarations, which yields a conflicting definition of | |
73 | srand48; it tries to redeclare what was once srandom to be srand48. | |
74 | So we go with HAVE_LRAND48 being defined. */ | |
75 | #ifdef HPUX | |
76 | #undef srandom | |
77 | #undef random | |
78 | /* We try to avoid checking for random and rint on hpux in | |
79 | configure.ac, but some other configure test might check for them as | |
80 | a dependency, so to be safe we also undefine them here. | |
81 | */ | |
82 | #undef HAVE_RANDOM | |
83 | #undef HAVE_RINT | |
84 | #endif /* HPUX */ | |
85 | ||
bb2e3a6e GM |
86 | #ifdef IRIX6_5 |
87 | #ifdef emacs | |
88 | char *_getpty(); | |
89 | #endif | |
90 | ||
bb2e3a6e GM |
91 | #endif /* IRIX6_5 */ |
92 | ||
fe3cc771 GM |
93 | #ifdef MSDOS |
94 | #ifndef __DJGPP__ | |
95 | You lose; /* Emacs for DOS must be compiled with DJGPP */ | |
96 | #endif | |
97 | #define _NAIVE_DOS_REGS | |
98 | ||
99 | /* Start of gnulib-related stuff */ | |
100 | ||
101 | /* lib/ftoastr.c wants strtold, but DJGPP only has _strtold. DJGPP > | |
102 | 2.03 has it, but it also has _strtold as a stub that jumps to | |
103 | strtold, so use _strtold in all versions. */ | |
104 | #define strtold _strtold | |
105 | ||
106 | #if __DJGPP__ > 2 || __DJGPP_MINOR__ > 3 | |
107 | # define HAVE_LSTAT 1 | |
108 | #else | |
109 | # define lstat stat | |
110 | #endif | |
b3cf17f6 EZ |
111 | /* The "portable" definition of _GL_INLINE on config.h does not work |
112 | with DJGPP GCC 3.4.4: it causes unresolved externals in sysdep.c, | |
113 | although lib/execinfo.h is included and the inline functions there | |
114 | are visible. */ | |
115 | #if __GNUC__ < 4 | |
116 | # define _GL_EXECINFO_INLINE inline | |
117 | #endif | |
fe3cc771 GM |
118 | /* End of gnulib-related stuff. */ |
119 | ||
b3cf17f6 EZ |
120 | #define emacs_raise(sig) msdos_fatal_signal (sig) |
121 | ||
fe3cc771 GM |
122 | /* Define one of these for easier conditionals. */ |
123 | #ifdef HAVE_X_WINDOWS | |
124 | /* We need a little extra space, see ../../lisp/loadup.el and the | |
125 | commentary below, in the non-X branch. The 140KB number was | |
126 | measured on GNU/Linux and on MS-Windows. */ | |
127 | #define SYSTEM_PURESIZE_EXTRA (-170000+140000) | |
128 | #else | |
129 | /* We need a little extra space, see ../../lisp/loadup.el. | |
130 | As of 20091024, DOS-specific files use up 62KB of pure space. But | |
131 | overall, we end up wasting 130KB of pure space, because | |
132 | BASE_PURESIZE starts at 1.47MB, while we need only 1.3MB (including | |
133 | non-DOS specific files and load history; the latter is about 55K, | |
134 | but depends on the depth of the top-level Emacs directory in the | |
135 | directory tree). Given the unknown policy of different DPMI | |
136 | hosts regarding loading of untouched pages, I'm not going to risk | |
137 | enlarging Emacs footprint by another 100+ KBytes. */ | |
138 | #define SYSTEM_PURESIZE_EXTRA (-170000+65000) | |
139 | #endif | |
2e415bb7 | 140 | #endif /* MSDOS */ |
fe3cc771 | 141 | |
b429a4ee GM |
142 | /* Mac OS X / GNUstep need a bit more pure memory. Of the existing knobs, |
143 | SYSTEM_PURESIZE_EXTRA seems like the least likely to cause problems. */ | |
144 | #ifdef HAVE_NS | |
145 | #if defined NS_IMPL_GNUSTEP | |
146 | # define SYSTEM_PURESIZE_EXTRA 30000 | |
147 | #elif defined DARWIN_OS | |
148 | # define SYSTEM_PURESIZE_EXTRA 200000 | |
149 | #endif | |
150 | #endif | |
151 | ||
a9e7a9d5 PE |
152 | #if defined HAVE_NTGUI && !defined DebPrint |
153 | # ifdef EMACSDEBUG | |
0fda9b75 DC |
154 | extern void _DebPrint (const char *fmt, ...); |
155 | # define DebPrint(stuff) _DebPrint stuff | |
156 | # else | |
157 | # define DebPrint(stuff) | |
a9e7a9d5 PE |
158 | # endif |
159 | #endif | |
0fda9b75 | 160 | |
a9e7a9d5 PE |
161 | #if defined CYGWIN && defined HAVE_NTGUI |
162 | # define NTGUI_UNICODE /* Cygwin runs only on UNICODE-supporting systems */ | |
163 | # define _WIN32_WINNT 0x500 /* Win2k */ | |
164 | #endif | |
0fda9b75 | 165 | |
b429a4ee GM |
166 | #ifdef emacs /* Don't do this for lib-src. */ |
167 | /* Tell regex.c to use a type compatible with Emacs. */ | |
168 | #define RE_TRANSLATE_TYPE Lisp_Object | |
e3ccf108 | 169 | #define RE_TRANSLATE(TBL, C) char_table_translate (TBL, C) |
b429a4ee | 170 | #define RE_TRANSLATE_P(TBL) (!EQ (TBL, make_number (0))) |
b429a4ee GM |
171 | #endif |
172 | ||
173 | #include <string.h> | |
174 | #include <stdlib.h> | |
175 | ||
176 | #if __GNUC__ >= 3 /* On GCC 3.0 we might get a warning. */ | |
177 | #define NO_INLINE __attribute__((noinline)) | |
178 | #else | |
179 | #define NO_INLINE | |
180 | #endif | |
181 | ||
7456e13f PE |
182 | #if (__clang__ \ |
183 | ? __has_attribute (externally_visible) \ | |
184 | : (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1))) | |
b429a4ee GM |
185 | #define EXTERNALLY_VISIBLE __attribute__((externally_visible)) |
186 | #else | |
187 | #define EXTERNALLY_VISIBLE | |
188 | #endif | |
189 | ||
190 | #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7) | |
191 | # define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec)) | |
192 | #else | |
193 | # define ATTRIBUTE_FORMAT(spec) /* empty */ | |
194 | #endif | |
195 | ||
196 | #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) | |
197 | # define ATTRIBUTE_FORMAT_PRINTF(formatstring_parameter, first_argument) \ | |
198 | ATTRIBUTE_FORMAT ((__gnu_printf__, formatstring_parameter, first_argument)) | |
199 | #else | |
200 | # define ATTRIBUTE_FORMAT_PRINTF(formatstring_parameter, first_argument) \ | |
201 | ATTRIBUTE_FORMAT ((__printf__, formatstring_parameter, first_argument)) | |
202 | #endif | |
203 | ||
204 | #define ATTRIBUTE_CONST _GL_ATTRIBUTE_CONST | |
205 | ||
206 | /* Some versions of GNU/Linux define noinline in their headers. */ | |
207 | #ifdef noinline | |
208 | #undef noinline | |
209 | #endif | |
210 | ||
0d6224d4 PE |
211 | /* Use Gnulib's extern-inline module for extern inline functions. |
212 | An include file foo.h should prepend FOO_INLINE to function | |
213 | definitions, with the following overall pattern: | |
214 | ||
215 | [#include any other .h files first.] | |
216 | ... | |
217 | INLINE_HEADER_BEGIN | |
0d6224d4 | 218 | ... |
00382e8b | 219 | INLINE int |
0d6224d4 PE |
220 | incr (int i) |
221 | { | |
222 | return i + 1; | |
223 | } | |
224 | ... | |
225 | INLINE_HEADER_END | |
226 | ||
00382e8b PE |
227 | For every executable, exactly one file that includes the header |
228 | should do this: | |
0d6224d4 | 229 | |
00382e8b | 230 | #define INLINE EXTERN_INLINE |
0d6224d4 | 231 | |
00382e8b PE |
232 | before including config.h or any other .h file. |
233 | Other .c files should not define INLINE. | |
0d6224d4 PE |
234 | |
235 | C99 compilers compile functions like 'incr' as C99-style extern | |
236 | inline functions. Pre-C99 GCCs do something similar with | |
237 | GNU-specific keywords. Pre-C99 non-GCC compilers use static | |
238 | functions, which bloats the code but is good enough. */ | |
239 | ||
00382e8b PE |
240 | #ifndef INLINE |
241 | # define INLINE _GL_INLINE | |
242 | #endif | |
f162bcc3 PE |
243 | #define EXTERN_INLINE _GL_EXTERN_INLINE |
244 | #define INLINE_HEADER_BEGIN _GL_INLINE_HEADER_BEGIN | |
245 | #define INLINE_HEADER_END _GL_INLINE_HEADER_END | |
246 | ||
fbe9e0b9 PE |
247 | /* To use the struct hack with N elements, declare the struct like this: |
248 | struct s { ...; t name[FLEXIBLE_ARRAY_MEMBER]; }; | |
249 | and allocate (offsetof (struct s, name) + N * sizeof (t)) bytes. */ | |
250 | #if 199901 <= __STDC_VERSION__ | |
251 | # define FLEXIBLE_ARRAY_MEMBER | |
252 | #elif __GNUC__ && !defined __STRICT_ANSI__ | |
253 | # define FLEXIBLE_ARRAY_MEMBER 0 | |
254 | #else | |
255 | # define FLEXIBLE_ARRAY_MEMBER 1 | |
256 | #endif | |
257 | ||
25e65510 GM |
258 | /* Use this to suppress gcc's `...may be used before initialized' warnings. */ |
259 | #ifdef lint | |
260 | /* Use CODE only if lint checking is in effect. */ | |
261 | # define IF_LINT(Code) Code | |
25e65510 GM |
262 | #else |
263 | # define IF_LINT(Code) /* empty */ | |
25e65510 GM |
264 | #endif |
265 | ||
b429a4ee | 266 | /* conf_post.h ends here */ |