1 /* conf_post.h --- configure.ac includes this via AH_BOTTOM
3 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2013 Free Software
6 This file is part of GNU Emacs.
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.
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.
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/>. */
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.
30 /* Include any platform specific configuration file. */
31 #ifdef config_opsysfile
32 # include config_opsysfile
37 /* The pre-C99 <stdbool.h> emulation doesn't work for bool bitfields. */
38 #if __STDC_VERSION__ < 199901
39 typedef unsigned int bool_bf
;
45 /* On AIX 3 this must be included before any other include file. */
48 # error "alloca not available on this machine"
52 #ifndef __has_attribute
53 # define __has_attribute(a) false /* non-clang */
58 #define malloc unexec_malloc
59 #define realloc unexec_realloc
60 #define free unexec_free
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
68 #endif /* DARWIN_OS */
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. */
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.
95 You lose
; /* Emacs for DOS must be compiled with DJGPP */
97 #define _NAIVE_DOS_REGS
99 /* Start of gnulib-related stuff */
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
106 #if __DJGPP__ > 2 || __DJGPP_MINOR__ > 3
107 # define HAVE_LSTAT 1
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
116 # define _GL_EXECINFO_INLINE inline
118 /* End of gnulib-related stuff. */
120 #define emacs_raise(sig) msdos_fatal_signal (sig)
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)
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)
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. */
145 #if defined NS_IMPL_GNUSTEP
146 # define SYSTEM_PURESIZE_EXTRA 30000
147 #elif defined DARWIN_OS
148 # define SYSTEM_PURESIZE_EXTRA 200000
152 #if defined HAVE_NTGUI && !defined DebPrint
154 extern void _DebPrint (const char *fmt
, ...);
155 # define DebPrint(stuff) _DebPrint stuff
157 # define DebPrint(stuff)
161 #if defined CYGWIN && defined HAVE_NTGUI
162 # define NTGUI_UNICODE /* Cygwin runs only on UNICODE-supporting systems */
163 # define _WIN32_WINNT 0x500 /* Win2k */
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
169 #define RE_TRANSLATE(TBL, C) char_table_translate (TBL, C)
170 #define RE_TRANSLATE_P(TBL) (!EQ (TBL, make_number (0)))
176 #if __GNUC__ >= 3 /* On GCC 3.0 we might get a warning. */
177 #define NO_INLINE __attribute__((noinline))
183 ? __has_attribute (externally_visible) \
184 : (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)))
185 #define EXTERNALLY_VISIBLE __attribute__((externally_visible))
187 #define EXTERNALLY_VISIBLE
190 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
191 # define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
193 # define ATTRIBUTE_FORMAT(spec) /* empty */
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))
200 # define ATTRIBUTE_FORMAT_PRINTF(formatstring_parameter, first_argument) \
201 ATTRIBUTE_FORMAT ((__printf__, formatstring_parameter, first_argument))
204 #define ATTRIBUTE_CONST _GL_ATTRIBUTE_CONST
206 /* Some versions of GNU/Linux define noinline in their headers. */
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:
215 [#include any other .h files first.]
227 For every executable, exactly one file that includes the header
230 #define INLINE EXTERN_INLINE
232 before including config.h or any other .h file.
233 Other .c files should not define INLINE.
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. */
241 # define INLINE _GL_INLINE
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
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
255 # define FLEXIBLE_ARRAY_MEMBER 1
258 /* Use this to suppress gcc's `...may be used before initialized' warnings. */
260 /* Use CODE only if lint checking is in effect. */
261 # define IF_LINT(Code) Code
263 # define IF_LINT(Code) /* empty */
266 /* conf_post.h ends here */