1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
|
dnl
dnl This file contains macros used in configure.ac.
dnl automake uses this file to generate aclocal.m4, which is used by autoconf.
dnl
dnl ### A macro to find the include directory, useful for cross-compiling.
AC_DEFUN([AC_INCLUDEDIR],
[AC_REQUIRE([AC_PROG_AWK])dnl
AC_SUBST(includedir)
AC_MSG_CHECKING(for primary include directory)
includedir=/usr/include
if test -n "$GCC"
then
>conftest.c
new_includedir=`
$CC -v -E conftest.c 2>&1 | $AWK '
/^End of search list/ { print last; exit }
{ last = [$]1 }
'
`
rm -f conftest.c
if test -n "$new_includedir" && test -d "$new_includedir"
then
includedir=$new_includedir
fi
fi
AC_MSG_RESULT($includedir)
])
dnl ### A macro to set gcc warning flags.
define(AC_WARNFLAGS,
[AC_SUBST(WARNFLAGS)
if test -z "$WARNFLAGS"
then
if test -n "$GCC"
then
# If we're using gcc we want warning flags.
WARNFLAGS=-Wall
fi
fi
])
dnl ### A macro to determine if we have a "MP" type procfs
AC_DEFUN([AC_MP_PROCFS],
[AC_MSG_CHECKING(for MP procfs)
AC_CACHE_VAL(ac_cv_mp_procfs,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdio.h>
#include <signal.h>
#include <sys/procfs.h>
main()
{
int pid;
char proc[32];
FILE *ctl;
FILE *status;
int cmd;
struct pstatus pstatus;
if ((pid = fork()) == 0) {
pause();
exit(0);
}
sprintf(proc, "/proc/%d/ctl", pid);
if ((ctl = fopen(proc, "w")) == NULL)
goto fail;
sprintf(proc, "/proc/%d/status", pid);
if ((status = fopen (proc, "r")) == NULL)
goto fail;
cmd = PCSTOP;
if (write (fileno (ctl), &cmd, sizeof cmd) < 0)
goto fail;
if (read (fileno (status), &pstatus, sizeof pstatus) < 0)
goto fail;
kill(pid, SIGKILL);
exit(0);
fail:
kill(pid, SIGKILL);
exit(1);
}
]])],[ac_cv_mp_procfs=yes],[ac_cv_mp_procfs=no],[
# Guess or punt.
case "$host_os" in
svr4.2*|svr5*)
ac_cv_mp_procfs=yes
;;
*)
ac_cv_mp_procfs=no
;;
esac
])])
AC_MSG_RESULT($ac_cv_mp_procfs)
if test "$ac_cv_mp_procfs" = yes
then
AC_DEFINE([HAVE_MP_PROCFS], 1,
[Define if you have a SVR4 MP type procfs.
I.E. /dev/xxx/ctl, /dev/xxx/status.
Also implies that you have the pr_lwp member in prstatus.])
fi
])
dnl ### A macro to determine if procfs is pollable.
AC_DEFUN([AC_POLLABLE_PROCFS],
[AC_MSG_CHECKING(for pollable procfs)
AC_CACHE_VAL(ac_cv_pollable_procfs,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdio.h>
#include <signal.h>
#include <sys/procfs.h>
#include <sys/stropts.h>
#include <poll.h>
#ifdef HAVE_MP_PROCFS
#define PIOCSTOP PCSTOP
#define POLLWANT POLLWRNORM
#define PROC "/proc/%d/ctl"
#define PROC_MODE "w"
int IOCTL (int fd, int cmd, int arg) {
return write (fd, &cmd, sizeof cmd);
}
#else
#define POLLWANT POLLPRI
#define PROC "/proc/%d"
#define PROC_MODE "r+"
#define IOCTL ioctl
#endif
main()
{
int pid;
char proc[32];
FILE *pfp;
struct pollfd pfd;
if ((pid = fork()) == 0) {
pause();
exit(0);
}
sprintf(proc, PROC, pid);
if ((pfp = fopen(proc, PROC_MODE)) == NULL)
goto fail;
if (IOCTL(fileno(pfp), PIOCSTOP, NULL) < 0)
goto fail;
pfd.fd = fileno(pfp);
pfd.events = POLLWANT;
if (poll(&pfd, 1, 0) < 0)
goto fail;
if (!(pfd.revents & POLLWANT))
goto fail;
kill(pid, SIGKILL);
exit(0);
fail:
kill(pid, SIGKILL);
exit(1);
}
]])],[ac_cv_pollable_procfs=yes],[ac_cv_pollable_procfs=no],[
# Guess or punt.
case "$host_os" in
solaris2*|irix5*|svr4.2uw*|svr5*)
ac_cv_pollable_procfs=yes
;;
*)
ac_cv_pollable_procfs=no
;;
esac
])])
AC_MSG_RESULT($ac_cv_pollable_procfs)
if test "$ac_cv_pollable_procfs" = yes
then
AC_DEFINE([HAVE_POLLABLE_PROCFS], 1,
[Define if you have SVR4 and the poll system call works on /proc files.])
fi
])
dnl ### A macro to determine if the prstatus structure has a pr_syscall member.
AC_DEFUN([AC_STRUCT_PR_SYSCALL],
[AC_MSG_CHECKING(for pr_syscall in struct prstatus)
AC_CACHE_VAL(ac_cv_struct_pr_syscall,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/procfs.h>]], [[#ifdef HAVE_MP_PROCFS
pstatus_t s;
s.pr_lwp.pr_syscall
#else
prstatus_t s;
s.pr_syscall
#endif]])],[ac_cv_struct_pr_syscall=yes],[ac_cv_struct_pr_syscall=no])])
AC_MSG_RESULT($ac_cv_struct_pr_syscall)
if test "$ac_cv_struct_pr_syscall" = yes
then
AC_DEFINE([HAVE_PR_SYSCALL], 1,
[Define if the prstatus structure in sys/procfs.h has a pr_syscall member.])
fi
])
dnl ### A macro to determine whether stat64 is defined.
AC_DEFUN([AC_STAT64],
[AC_MSG_CHECKING(for stat64 in (asm|sys)/stat.h)
AC_CACHE_VAL(ac_cv_type_stat64,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#ifdef LINUX
#include <linux/types.h>
#include <asm/stat.h>
#else
#include <sys/stat.h>
#endif]], [[struct stat64 st;]])],[ac_cv_type_stat64=yes],[ac_cv_type_stat64=no])])
AC_MSG_RESULT($ac_cv_type_stat64)
if test "$ac_cv_type_stat64" = yes
then
AC_DEFINE([HAVE_STAT64], 1,
[Define if stat64 is available in asm/stat.h.])
fi
])
dnl ### A macro to determine if off_t is a long long
AC_DEFUN([AC_OFF_T_IS_LONG_LONG],
[AC_MSG_CHECKING(for long long off_t)
AC_CACHE_VAL(ac_cv_have_long_long_off_t,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/types.h>
main () {
if (sizeof (off_t) == sizeof (long long) &&
sizeof (off_t) > sizeof (long))
return 0;
return 1;
}
]])],[ac_cv_have_long_long_off_t=yes],[ac_cv_have_long_long_off_t=no],[# Should try to guess here
ac_cv_have_long_long_off_t=no
])])
AC_MSG_RESULT($ac_cv_have_long_long_off_t)
if test "$ac_cv_have_long_long_off_t" = yes
then
AC_DEFINE([HAVE_LONG_LONG_OFF_T], 1, [Define if off_t is a long long.])
fi
])
dnl ### A macro to determine if rlim_t is a long long
AC_DEFUN([AC_RLIM_T_IS_LONG_LONG],
[AC_MSG_CHECKING(for long long rlim_t)
AC_CACHE_VAL(ac_cv_have_long_long_rlim_t,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
main () {
if (sizeof (rlim_t) == sizeof (long long) &&
sizeof (rlim_t) > sizeof (long))
return 0;
return 1;
}
]])],[ac_cv_have_long_long_rlim_t=yes],[ac_cv_have_long_long_rlim_t=no],[# Should try to guess here
ac_cv_have_long_long_rlim_t=no
])])
AC_MSG_RESULT($ac_cv_have_long_long_rlim_t)
if test "$ac_cv_have_long_long_rlim_t" = yes
then
AC_DEFINE([HAVE_LONG_LONG_RLIM_T], 1, [Define if rlim_t is a long long.])
fi
])
dnl ### A macro to determine endianness of long long
AC_DEFUN([AC_LITTLE_ENDIAN_LONG_LONG],
[AC_MSG_CHECKING(for little endian long long)
AC_CACHE_VAL(ac_cv_have_little_endian_long_long,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
int main () {
union {
long long ll;
long l [2];
} u;
u.ll = 0x12345678;
if (u.l[0] == 0x12345678)
return 0;
return 1;
}
]])],[ac_cv_have_little_endian_long_long=yes],[ac_cv_have_little_endian_long_long=no],[# Should try to guess here
ac_cv_have_little_endian_long_long=no
])])
AC_MSG_RESULT($ac_cv_have_little_endian_long_long)
if test "$ac_cv_have_little_endian_long_long" = yes
then
AC_DEFINE([HAVE_LITTLE_ENDIAN_LONG_LONG], 1,
[Define if long long is little-endian.])
fi
])
|
