summaryrefslogtreecommitdiff
path: root/source3/lib/replace/libreplace.m4
blob: 2b33d97989a44e8f429cfac7b8b8b34bf1e27c55 (plain)
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
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
AC_DEFUN_ONCE(AC_LIBREPLACE_LOCATION_CHECKS,
[
echo "LIBREPLACE_LOCATION_CHECKS: START"

dnl find the libreplace sources. This is meant to work both for 
dnl libreplace standalone builds, and builds of packages using libreplace
libreplacedir=""
libreplacepaths="$srcdir $srcdir/lib/replace $srcdir/libreplace $srcdir/../libreplace $srcdir/../replace"
for d in $libreplacepaths; do
	if test -f "$d/replace.c"; then
		libreplacedir="$d"		
		AC_SUBST(libreplacedir)
		break;
	fi
done
if test x"$libreplacedir" = "x"; then
	AC_MSG_ERROR([cannot find libreplace in $libreplacepaths])
fi
LIBREPLACEOBJ="replace.o"
AC_SUBST(LIBREPLACEOBJ)

AC_CANONICAL_BUILD
AC_CANONICAL_HOST
AC_CANONICAL_TARGET

echo "LIBREPLACE_LOCATION_CHECKS: END"
]) dnl end AC_LIBREPLACE_LOCATION_CHECKS


AC_DEFUN_ONCE(AC_LIBREPLACE_BROKEN_CHECKS,
[
echo "LIBREPLACE_BROKEN_CHECKS: START"

dnl find the libreplace sources. This is meant to work both for 
dnl libreplace standalone builds, and builds of packages using libreplace
libreplacedir=""
for d in "$srcdir" "$srcdir/lib/replace" "$srcdir/libreplace" "$srcdir/../libreplace" "$srcdir/../replace"; do
	if test -f "$d/replace.c"; then
		libreplacedir="$d"		
		AC_SUBST(libreplacedir)
		break;
	fi
done
LIBREPLACEOBJ="replace.o"
AC_SUBST(LIBREPLACEOBJ)

LIBREPLACEOBJ="${LIBREPLACEOBJ} snprintf.o"

AC_TYPE_SIGNAL
AC_TYPE_UID_T
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_SIZE_T
AC_TYPE_PID_T
AC_STRUCT_ST_RDEV
AC_CHECK_TYPE(ino_t,unsigned)
AC_CHECK_TYPE(loff_t,off_t)
AC_CHECK_TYPE(offset_t,loff_t)

AC_FUNC_MEMCMP

AC_CHECK_FUNCS(pipe strftime srandom random srand rand usleep setbuffer lstat getpgrp)

AC_CHECK_HEADERS(stdbool.h stdint.h sys/select.h)
AC_CHECK_HEADERS(setjmp.h)

LIBREPLACE_PROVIDE_HEADER([stdint.h])
LIBREPLACE_PROVIDE_HEADER([stdbool.h])

AC_CHECK_TYPE(bool, 
[AC_DEFINE(HAVE_BOOL, 1, [Whether the bool type is available])],,
[
AC_INCLUDES_DEFAULT
#ifdef HAVE_STDBOOL_H
#include <stdbool.h>
#endif]
)

AC_CHECK_TYPE(_Bool, 
[AC_DEFINE(HAVE__Bool, 1, [Whether the _Bool type is available])],,
[
AC_INCLUDES_DEFAULT
#ifdef HAVE_STDBOOL_H
#include <stdbool.h>
#endif]
)

AC_CACHE_CHECK([for working mmap],libreplace_cv_HAVE_MMAP,[
AC_TRY_RUN([#include "$libreplacedir/test/shared_mmap.c"],
           libreplace_cv_HAVE_MMAP=yes,libreplace_cv_HAVE_MMAP=no,libreplace_cv_HAVE_MMAP=cross)])
if test x"$libreplace_cv_HAVE_MMAP" = x"yes"; then
    AC_DEFINE(HAVE_MMAP,1,[Whether mmap works])
fi


AC_CHECK_HEADERS(sys/syslog.h syslog.h)
AC_CHECK_HEADERS(sys/time.h time.h)
AC_CHECK_HEADERS(stdarg.h vararg.h)
AC_CHECK_HEADERS(sys/sockio.h sys/un.h)
AC_CHECK_HEADERS(sys/mount.h mntent.h)
AC_CHECK_HEADERS(stropts.h)

AC_CHECK_FUNCS(seteuid setresuid setegid setresgid chroot bzero strerror)
AC_CHECK_FUNCS(vsyslog setlinebuf mktime ftruncate chsize rename)
AC_CHECK_FUNCS(waitpid strlcpy strlcat initgroups memmove strdup)
AC_CHECK_FUNCS(pread pwrite strndup strcasestr strtok_r mkdtemp)
AC_CHECK_FUNCS(isatty)
AC_HAVE_DECL(setresuid, [#include <unistd.h>])
AC_HAVE_DECL(setresgid, [#include <unistd.h>])
AC_HAVE_DECL(errno, [#include <errno.h>])

AC_CACHE_CHECK([for secure mkstemp],libreplace_cv_HAVE_SECURE_MKSTEMP,[
AC_TRY_RUN([#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
main() { 
  struct stat st;
  char tpl[20]="/tmp/test.XXXXXX"; 
  int fd = mkstemp(tpl); 
  if (fd == -1) exit(1);
  unlink(tpl);
  if (fstat(fd, &st) != 0) exit(1);
  if ((st.st_mode & 0777) != 0600) exit(1);
  exit(0);
}],
libreplace_cv_HAVE_SECURE_MKSTEMP=yes,
libreplace_cv_HAVE_SECURE_MKSTEMP=no,
libreplace_cv_HAVE_SECURE_MKSTEMP=cross)])
if test x"$libreplace_cv_HAVE_SECURE_MKSTEMP" = x"yes"; then
    AC_DEFINE(HAVE_SECURE_MKSTEMP,1,[Whether mkstemp is secure])
fi

dnl Provided by snprintf.c:
AC_CHECK_HEADERS(stdio.h strings.h)
AC_CHECK_DECLS([snprintf, vsnprintf, asprintf, vasprintf])
AC_CHECK_FUNCS(snprintf vsnprintf asprintf vasprintf)

AC_CACHE_CHECK([for C99 vsnprintf],libreplace_cv_HAVE_C99_VSNPRINTF,[
AC_TRY_RUN([
#include <sys/types.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
void foo(const char *format, ...) { 
       va_list ap;
       int len;
       char buf[20];
       long long l = 1234567890;
       l *= 100;

       va_start(ap, format);
       len = vsnprintf(buf, 0, format, ap);
       va_end(ap);
       if (len != 5) exit(1);

       va_start(ap, format);
       len = vsnprintf(0, 0, format, ap);
       va_end(ap);
       if (len != 5) exit(2);

       if (snprintf(buf, 3, "hello") != 5 || strcmp(buf, "he") != 0) exit(3);

       if (snprintf(buf, 20, "%lld", l) != 12 || strcmp(buf, "123456789000") != 0) exit(4);
       if (snprintf(buf, 20, "%zu", 123456789) != 9 || strcmp(buf, "123456789") != 0) exit(5);
       if (snprintf(buf, 20, "%2\$d %1\$d", 3, 4) != 3 || strcmp(buf, "4 3") != 0) exit(6);
       if (snprintf(buf, 20, "%s", 0) < 3) exit(7);

       exit(0);
}
main() { foo("hello"); }
],
libreplace_cv_HAVE_C99_VSNPRINTF=yes,libreplace_cv_HAVE_C99_VSNPRINTF=no,libreplace_cv_HAVE_C99_VSNPRINTF=cross)])
if test x"$libreplace_cv_HAVE_C99_VSNPRINTF" = x"yes"; then
    AC_DEFINE(HAVE_C99_VSNPRINTF,1,[Whether there is a C99 compliant vsnprintf])
fi


dnl VA_COPY
AC_CACHE_CHECK([for va_copy],libreplace_cv_HAVE_VA_COPY,[
AC_TRY_LINK([#include <stdarg.h>
va_list ap1,ap2;], [va_copy(ap1,ap2);],
libreplace_cv_HAVE_VA_COPY=yes,libreplace_cv_HAVE_VA_COPY=no)])
if test x"$libreplace_cv_HAVE_VA_COPY" = x"yes"; then
    AC_DEFINE(HAVE_VA_COPY,1,[Whether va_copy() is available])
fi

if test x"$libreplace_cv_HAVE_VA_COPY" != x"yes"; then
AC_CACHE_CHECK([for __va_copy],libreplace_cv_HAVE___VA_COPY,[
AC_TRY_LINK([#include <stdarg.h>
va_list ap1,ap2;], [__va_copy(ap1,ap2);],
libreplace_cv_HAVE___VA_COPY=yes,libreplace_cv_HAVE___VA_COPY=no)])
if test x"$libreplace_cv_HAVE___VA_COPY" = x"yes"; then
    AC_DEFINE(HAVE___VA_COPY,1,[Whether __va_copy() is available])
fi
fi

dnl __FUNCTION__ macro
AC_CACHE_CHECK([for __FUNCTION__ macro],libreplace_cv_HAVE_FUNCTION_MACRO,[
AC_TRY_COMPILE([#include <stdio.h>], [printf("%s\n", __FUNCTION__);],
libreplace_cv_HAVE_FUNCTION_MACRO=yes,libreplace_cv_HAVE_FUNCTION_MACRO=no)])
if test x"$libreplace_cv_HAVE_FUNCTION_MACRO" = x"yes"; then
    AC_DEFINE(HAVE_FUNCTION_MACRO,1,[Whether there is a __FUNCTION__ macro])
else
    dnl __func__ macro
    AC_CACHE_CHECK([for __func__ macro],libreplace_cv_HAVE_func_MACRO,[
    AC_TRY_COMPILE([#include <stdio.h>], [printf("%s\n", __func__);],
    libreplace_cv_HAVE_func_MACRO=yes,libreplace_cv_HAVE_func_MACRO=no)])
    if test x"$libreplace_cv_HAVE_func_MACRO" = x"yes"; then
       AC_DEFINE(HAVE_func_MACRO,1,[Whether there is a __func__ macro])
    fi
fi

AC_CHECK_HEADERS([sys/param.h limits.h])

AC_CHECK_TYPE(comparison_fn_t, 
[AC_DEFINE(HAVE_COMPARISON_FN_T, 1,[Whether or not we have comparison_fn_t])])

AC_HAVE_DECL(setenv, [#include <stdlib.h>])
AC_CHECK_FUNCS(setenv unsetenv)

AC_CHECK_FUNCS(strnlen)
AC_CHECK_FUNCS(strtoull __strtoull strtouq strtoll __strtoll strtoq)

# this test disabled as we don't actually need __VA_ARGS__ yet
AC_TRY_CPP([
#define eprintf(...) fprintf(stderr, __VA_ARGS__)
eprintf("bla", "bar");
], AC_DEFINE(HAVE__VA_ARGS__MACRO, 1, [Whether the __VA_ARGS__ macro is available]))


AC_CACHE_CHECK([for sig_atomic_t type],libreplace_cv_sig_atomic_t, [
    AC_TRY_COMPILE([
#include <sys/types.h>
#if STDC_HEADERS
#include <stdlib.h>
#include <stddef.h>
#endif
#include <signal.h>],[sig_atomic_t i = 0],
	libreplace_cv_sig_atomic_t=yes,libreplace_cv_sig_atomic_t=no)])
if test x"$libreplace_cv_sig_atomic_t" = x"yes"; then
   AC_DEFINE(HAVE_SIG_ATOMIC_T_TYPE,1,[Whether we have the atomic_t variable type])
fi


AC_CACHE_CHECK([for O_DIRECT flag to open(2)],libreplace_cv_HAVE_OPEN_O_DIRECT,[
AC_TRY_COMPILE([
#include <unistd.h>
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif],
[int fd = open("/dev/null", O_DIRECT);],
libreplace_cv_HAVE_OPEN_O_DIRECT=yes,libreplace_cv_HAVE_OPEN_O_DIRECT=no)])
if test x"$libreplace_cv_HAVE_OPEN_O_DIRECT" = x"yes"; then
    AC_DEFINE(HAVE_OPEN_O_DIRECT,1,[Whether the open(2) accepts O_DIRECT])
fi


dnl Check if the C compiler understands volatile (it should, being ANSI).
AC_CACHE_CHECK([that the C compiler understands volatile],libreplace_cv_volatile, [
	AC_TRY_COMPILE([#include <sys/types.h>],[volatile int i = 0],
		libreplace_cv_volatile=yes,libreplace_cv_volatile=no)])
if test x"$libreplace_cv_volatile" = x"yes"; then
	AC_DEFINE(HAVE_VOLATILE, 1, [Whether the C compiler understands volatile])
fi

m4_include(system/config.m4)

m4_include(dlfcn.m4)
m4_include(getpass.m4)
m4_include(strptime.m4)
m4_include(win32.m4)
m4_include(timegm.m4)
m4_include(repdir.m4)

AC_CHECK_FUNCS([syslog printf memset memcpy],,[AC_MSG_ERROR([Required function not found])])

echo "LIBREPLACE_BROKEN_CHECKS: END"
]) dnl end AC_LIBREPLACE_BROKEN_CHECKS

AC_DEFUN_ONCE(AC__LIBREPLACE_ALL_CHECKS_START,
[
#LIBREPLACE_ALL_CHECKS: START"
])
AC_DEFUN_ONCE(AC__LIBREPLACE_ALL_CHECKS_END,
[
#LIBREPLACE_ALL_CHECKS: END"
])
m4_define(AC_LIBREPLACE_ALL_CHECKS,
[
AC__LIBREPLACE_ALL_CHECKS_START
AC_LIBREPLACE_LOCATION_CHECKS
AC_LIBREPLACE_CC_CHECKS
AC_LIBREPLACE_BROKEN_CHECKS
AC__LIBREPLACE_ALL_CHECKS_END
CFLAGS="$CFLAGS -I$libreplacedir"
])

m4_include(libreplace_cc.m4)
m4_include(libreplace_ld.m4)
m4_include(libreplace_network.m4)
m4_include(libreplace_macros.m4)
m4_include(autoconf-2.60.m4)