File: acinclude.m4

package info (click to toggle)
ike-scan 1.9.4-2
  • links: PTS
  • area: main
  • in suites: buster
  • size: 5,104 kB
  • sloc: ansic: 10,991; sh: 884; perl: 148; makefile: 22
file content (350 lines) | stat: -rw-r--r-- 10,145 bytes parent folder | download | duplicates (3)
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
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
dnl $Id$
dnl NTA Monitor autoconf macros

dnl	AC_NTA_CHECK_TYPE -- See if a type exists using reasonable includes
dnl
dnl	Although there is a standard macro AC_CHECK_TYPE, we can't always
dnl	use this because it doesn't include enough header files.
dnl
AC_DEFUN([AC_NTA_CHECK_TYPE],
   [AC_MSG_CHECKING([for $1 using $CC])
   AC_CACHE_VAL(ac_cv_nta_have_$1,
	AC_TRY_COMPILE([
#	include "confdefs.h"
#	include <stdio.h>
#	if HAVE_SYS_TYPES_H
#	 include <sys/types.h>
#	endif
#	if HAVE_SYS_STAT_H
#	 include <sys/stat.h>
#	endif
#	ifdef STDC_HEADERS
#	 include <stdlib.h>
#	 include <stddef.h>
#	endif
#	if HAVE_INTTYPES_H
#	 include <inttypes.h>
#	else
#	 if HAVE_STDINT_H
#	  include <stdint.h>
#	 endif
#	endif
#	if HAVE_UNISTD_H
#	 include <unistd.h>
#	endif
#	ifdef HAVE_ARPA_INET_H
#	 include <arpa/inet.h>
#	endif
#	ifdef HAVE_NETDB_H
#	 include <netdb.h>
#	endif
#	ifdef HAVE_NETINET_IN_H
#	 include <netinet/in.h>
#	endif
#	ifdef SYS_SOCKET_H
#	 include <sys/socket.h>
#	endif
	],
	[$1 i],
	ac_cv_nta_have_$1=yes,
	ac_cv_nta_have_$1=no))
   AC_MSG_RESULT($ac_cv_nta_have_$1)
   if test $ac_cv_nta_have_$1 = no ; then
	   AC_DEFINE($1, $2, [Define to required type if we don't have $1])
   fi])

dnl	AC_NTA_NET_SIZE_T -- Determine type of 3rd argument to accept
dnl
dnl	This type is normally socklen_t but is sometimes size_t or int instead.
dnl	We try, in order: socklen_t, int, size_t until we find one that compiles
dnl
AC_DEFUN([AC_NTA_NET_SIZE_T],
   [AC_MSG_CHECKING([for socklen_t or equivalent using $CC])
   ac_nta_net_size_t=no
   AC_TRY_COMPILE([
#	include "confdefs.h"
#	include <sys/types.h>
#	ifdef HAVE_SYS_SOCKET_H
#	include <sys/socket.h>
#	endif],
	[int s;
	struct sockaddr addr;
	socklen_t addrlen;
	int result;
	result=accept(s, &addr, &addrlen)],
	   ac_nta_net_size_t=socklen_t,ac_nta_net_size_t=no)
   if test $ac_nta_net_size_t = no; then
   AC_TRY_COMPILE([
#	include "confdefs.h"
#	include <sys/types.h>
#	ifdef HAVE_SYS_SOCKET_H
#	include <sys/socket.h>
#	endif],
	[int s;
	struct sockaddr addr;
	int addrlen;
	int result;
	result=accept(s, &addr, &addrlen)],
	ac_nta_net_size_t=int,ac_nta_net_size_t=no)
   fi
   if test $ac_nta_net_size_t = no; then
   AC_TRY_COMPILE([
#	include "confdefs.h"
#	include <sys/types.h>
#	ifdef HAVE_SYS_SOCKET_H
#	include <sys/socket.h>
#	endif],
	[int s;
	struct sockaddr addr;
	size_t addrlen;
	int result;
	result=accept(s, &addr, &addrlen)],
	ac_nta_net_size_t=size_t,ac_nta_net_size_t=no)
   fi
   if test $ac_nta_net_size_t = no; then
      AC_MSG_ERROR([Cannot find acceptable type for 3rd arg to accept()])
   else
      AC_MSG_RESULT($ac_nta_net_size_t)
      AC_DEFINE_UNQUOTED(NET_SIZE_T, $ac_nta_net_size_t, [Define required type for 3rd arg to accept()])
   fi
   ])

dnl PGAC_TYPE_64BIT_INT(TYPE)
dnl -------------------------
dnl Check if TYPE is a working 64 bit integer type. Set HAVE_TYPE_64 to
dnl yes or no respectively, and define HAVE_TYPE_64 if yes.
dnl
dnl This function comes from the Postgresql file:
dnl pgsql/config/c-compiler.m4,v 1.13
dnl
AC_DEFUN([PGAC_TYPE_64BIT_INT],
[define([Ac_define], [translit([have_$1_64], [a-z *], [A-Z_P])])dnl
define([Ac_cachevar], [translit([pgac_cv_type_$1_64], [ *], [_p])])dnl
AC_CACHE_CHECK([whether $1 is 64 bits], [Ac_cachevar],
[AC_TRY_RUN(
[typedef $1 int64;

/*
 * These are globals to discourage the compiler from folding all the
 * arithmetic tests down to compile-time constants.
 */
int64 a = 20000001;
int64 b = 40000005;

int does_int64_work()
{
  int64 c,d;

  if (sizeof(int64) != 8)
    return 0;			/* definitely not the right size */

  /* Do perfunctory checks to see if 64-bit arithmetic seems to work */
  c = a * b;
  d = (c + b) / b;
  if (d != a+1)
    return 0;
  return 1;
}
main() {
  exit(! does_int64_work());
}],
[Ac_cachevar=yes],
[Ac_cachevar=no],
[# If cross-compiling, check the size reported by the compiler and
# trust that the arithmetic works.
AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([], [sizeof($1) == 8])],
                  Ac_cachevar=yes,
                  Ac_cachevar=no)])])

Ac_define=$Ac_cachevar
if test x"$Ac_cachevar" = xyes ; then
  AC_DEFINE(Ac_define,, [Define to 1 if `]$1[' works and is 64 bits.])
fi
undefine([Ac_define])dnl
undefine([Ac_cachevar])dnl
])# PGAC_TYPE_64BIT_INT

dnl PGAC_FUNC_SNPRINTF_LONG_LONG_INT_FORMAT
dnl ---------------------------------------
dnl Determine which format snprintf uses for long long int.  We handle
dnl %lld, %qd, %I64d.  The result is in shell variable
dnl LONG_LONG_INT_FORMAT.
dnl
dnl MinGW uses '%I64d', though gcc throws an warning with -Wall,
dnl while '%lld' doesn't generate a warning, but doesn't work.
dnl
dnl This function comes from the Postgresql file:
dnl pgsql/config/c-library.m4,v 1.28
dnl
AC_DEFUN([PGAC_FUNC_SNPRINTF_LONG_LONG_INT_FORMAT],
[AC_MSG_CHECKING([snprintf format for long long int])
AC_CACHE_VAL(pgac_cv_snprintf_long_long_int_format,
[for pgac_format in '%lld' '%qd' '%I64d'; do
AC_TRY_RUN([#include <stdio.h>
typedef long long int int64;
#define INT64_FORMAT "$pgac_format"

int64 a = 20000001;
int64 b = 40000005;

int does_int64_snprintf_work()
{
  int64 c;
  char buf[100];

  if (sizeof(int64) != 8)
    return 0;			/* doesn't look like the right size */

  c = a * b;
  snprintf(buf, 100, INT64_FORMAT, c);
  if (strcmp(buf, "800000140000005") != 0)
    return 0;			/* either multiply or snprintf is busted */
  return 1;
}
main() {
  exit(! does_int64_snprintf_work());
}],
[pgac_cv_snprintf_long_long_int_format=$pgac_format; break],
[],
[pgac_cv_snprintf_long_long_int_format=cross; break])
done])dnl AC_CACHE_VAL

LONG_LONG_INT_FORMAT=''

case $pgac_cv_snprintf_long_long_int_format in
  cross) AC_MSG_RESULT([cannot test (not on host machine)]);;
  ?*)    AC_MSG_RESULT([$pgac_cv_snprintf_long_long_int_format])
         LONG_LONG_INT_FORMAT=$pgac_cv_snprintf_long_long_int_format;;
  *)     AC_MSG_RESULT(none);;
esac])# PGAC_FUNC_SNPRINTF_LONG_LONG_INT_FORMAT

dnl
dnl Useful macros for autoconf to check for ssp-patched gcc
dnl 1.0 - September 2003 - Tiago Sousa <mirage@kaotik.org>
dnl
dnl About ssp:
dnl GCC extension for protecting applications from stack-smashing attacks
dnl http://www.research.ibm.com/trl/projects/security/ssp/
dnl
dnl Usage:
dnl After calling the correct AC_LANG_*, use the corresponding macro:
dnl
dnl GCC_STACK_PROTECT_CC
dnl checks -fstack-protector with the C compiler, if it exists then updates
dnl CFLAGS and defines ENABLE_SSP_CC
dnl
dnl GCC_STACK_PROTECT_CXX
dnl checks -fstack-protector with the C++ compiler, if it exists then updates
dnl CXXFLAGS and defines ENABLE_SSP_CXX
dnl
AC_DEFUN([GCC_STACK_PROTECT_CC],[
  ssp_cc=yes
  if test "X$CC" != "X"; then
    AC_MSG_CHECKING([whether ${CC} accepts -fstack-protector])
    ssp_old_cflags="$CFLAGS"
    CFLAGS="$CFLAGS -fstack-protector"
    AC_TRY_COMPILE(,,, ssp_cc=no)
    echo $ssp_cc
    if test "X$ssp_cc" = "Xno"; then
      CFLAGS="$ssp_old_cflags"
    else
      AC_DEFINE([ENABLE_SSP_CC], 1, [Define if SSP C support is enabled.])
    fi
  fi
])

AC_DEFUN([GCC_STACK_PROTECT_CXX],[
  ssp_cxx=yes
  if test "X$CXX" != "X"; then
    AC_MSG_CHECKING([whether ${CXX} accepts -fstack-protector])
    ssp_old_cxxflags="$CXXFLAGS"
    CXXFLAGS="$CXXFLAGS -fstack-protector"
    AC_TRY_COMPILE(,,, ssp_cxx=no)
    echo $ssp_cxx
    if test "X$ssp_cxx" = "Xno"; then
        CXXFLAGS="$ssp_old_cxxflags"
    else
      AC_DEFINE([ENABLE_SSP_CXX], 1, [Define if SSP C++ support is enabled.])
    fi
  fi
])

dnl Check whether GCC accepts -D_FORTIFY_SOURCE
dnl
dnl This was introduced in GCC 4.1 and glibc 2.4, but was present in earlier
dnl versions on redhat systems (specifically GCC 3.4.3 and above).
dnl
dnl We define the GNUC_PREREQ macro to the same definition as __GNUC_PREREQ
dnl in <features.h>. We don't use __GNUC_PREREQ directly because <features.h>
dnl is not present on all the operating systems that we support, e.g. OpenBSD.
dnl
AC_DEFUN([GCC_FORTIFY_SOURCE],[
   if test "x$CC" != "X"; then
      AC_MSG_CHECKING([whether ${CC} accepts -D_FORTIFY_SOURCE])
      AC_TRY_COMPILE(,[
         #define GNUC_PREREQ(maj, min) ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
         #if !(GNUC_PREREQ (4, 1) \
            || (defined __GNUC_RH_RELEASE__ && GNUC_PREREQ (4, 0)) \
            || (defined __GNUC_RH_RELEASE__ && GNUC_PREREQ (3, 4) \
               && __GNUC_MINOR__ == 4 \
               && (__GNUC_PATCHLEVEL__ > 2 \
                  || (__GNUC_PATCHLEVEL__ == 2 && __GNUC_RH_RELEASE__ >= 8))))
         #error No FORTIFY_SOURCE support
         #endif
      ], [
         AC_MSG_RESULT(yes)
         CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
      ], [
         AC_MSG_RESULT(no)
      ])
   fi
])

dnl Check for support of the GCC -Wformat-security option.
dnl This option was introduced in GCC 3.0.
dnl
dnl Note that in this test, the test compilation fails if the option is
dnl supported, and succeeds if it is not supported.
dnl
dnl If this option is supported, then the test program will produce a
dnl warning like "format not a string literal and no format arguments".
dnl If it is not supported, then the test program will compile without
dnl warnings.
dnl
AC_DEFUN([GCC_FORMAT_SECURITY],[
   if test "x$CC" != "X"; then
      AC_MSG_CHECKING([whether ${CC} accepts -Wformat-security])
      wfs_old_cflags="$CFLAGS"
      CFLAGS="$CFLAGS -Wall -Werror -Wformat -Wformat-security"
      AC_TRY_COMPILE([#include <stdio.h>], [
         char *fmt=NULL;
         printf(fmt);
         return 0;
      ], [
         AC_MSG_RESULT(no)
         CFLAGS="$wfs_old_cflags"
      ], [
         AC_MSG_RESULT(yes)
         CFLAGS="$wfs_old_cflags -Wformat -Wformat-security"
      ])
   fi
])

dnl Check for support of the GCC -Wextra option, which enables extra warnings.
dnl Support for this option was added in gcc 3.4.0.
dnl
AC_DEFUN([GCC_WEXTRA],[
  gcc_wextra=yes
  if test "X$CC" != "X"; then
    AC_MSG_CHECKING([whether ${CC} accepts -Wextra])
    gcc_old_cflags="$CFLAGS"
    CFLAGS="$CFLAGS -Wextra"
    AC_TRY_COMPILE(,,[
       AC_MSG_RESULT(yes)
    ],[
       AC_MSG_RESULT(no)
       gcc_wextra=no
       CFLAGS="$ssp_old_cflags"
    ])
  fi
])