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
|
dnl ** Additional Autoconf tests for BIRD configure script
dnl ** (c) 1999 Martin Mares <mj@ucw.cz>
AC_DEFUN(BIRD_CHECK_INTEGERS,
[AC_CHECK_SIZEOF(char, 0)
AC_CHECK_SIZEOF(short int, 0)
AC_CHECK_SIZEOF(int, 0)
AC_CHECK_SIZEOF(long int, 0)
AC_CHECK_SIZEOF(long long int, 0)
for size in 1 2 4 8; do
bits=`expr $size "*" 8`
AC_MSG_CHECKING([for $bits-bit type])
if test $ac_cv_sizeof_int = $size ; then
res=int
elif test $ac_cv_sizeof_char = $size ; then
res=char
elif test $ac_cv_sizeof_short_int = $size ; then
res="short int"
elif test $ac_cv_sizeof_long_int = $size ; then
res="long int"
elif test $ac_cv_sizeof_long_long_int = $size ; then
res="long long int"
else
AC_MSG_RESULT([not found])
AC_MSG_ERROR([Cannot find $bits-bit integer type.])
fi
AC_MSG_RESULT($res)
AC_DEFINE_UNQUOTED(INTEGER_$bits, $res)
done
])
dnl BIRD_CHECK_ENDIAN is unused and obsolete
AC_DEFUN(BIRD_CHECK_ENDIAN,
[AC_CACHE_CHECK([CPU endianity], bird_cv_c_endian,[
AC_TRY_RUN([
#include <stdio.h>
unsigned int x = 0x12345678;
unsigned char *z = (unsigned char *) &x;
int main(void)
{
FILE *f = fopen("conftestresult", "w");
if (!f) return 10;
fprintf(f, "%02x %02x %02x %02x", *z, *(z+1), *(z+2), *(z+3));
fclose(f);
exit(0);
}
],[
endian=`cat conftestresult`
if test "$endian" = "12 34 56 78" ; then
bird_cv_c_endian=big-endian
elif test "$endian" = "78 56 34 12" ; then
bird_cv_c_endian=little-endian
fi
],[endian="test program failed"],[endian="not available, we're cross compiling"])
if test -z "$bird_cv_c_endian" ; then
AC_MSG_RESULT($endian)
AC_MSG_ERROR([Cannot determine CPU endianity.])
fi
])
case $bird_cv_c_endian in
big-endian) AC_DEFINE(CPU_BIG_ENDIAN) ;;
little-endian) AC_DEFINE(CPU_LITTLE_ENDIAN) ;;
esac
])
AC_DEFUN(BIRD_CHECK_STRUCT_ALIGN,
[AC_CACHE_CHECK([usual alignment of structures],bird_cv_c_struct_align,[
AC_TRY_RUN([
#include <stdio.h>
struct { char x; long int y; } ary[2];
int main(void)
{
FILE *f = fopen("conftestresult", "w");
if (!f) return 10;
fprintf(f, "%d", sizeof(ary)/2);
fclose(f);
exit(0);
}
],[
bird_cv_c_struct_align=`cat conftestresult`
],[
AC_MSG_RESULT([test program failed])
AC_MSG_ERROR([Cannot determine structure alignment])
],[bird_cv_c_struct_align=16])
])
AC_DEFINE_UNQUOTED(CPU_STRUCT_ALIGN, $bird_cv_c_struct_align)
])
AC_DEFUN(BIRD_CHECK_TIME_T,
[AC_CACHE_CHECK([characteristics of time_t], bird_cv_type_time_t, [
AC_TRY_RUN([
#include <stdio.h>
#include <sys/time.h>
#include <limits.h>
int main(void)
{
FILE *f = fopen("conftestresult", "w");
if (!f) return 10;
fprintf(f, "%d-bit ", sizeof(time_t)*CHAR_BIT);
if ((time_t) -1 > 0) fprintf(f, "un");
fprintf(f, "signed");
fclose(f);
exit(0);
}
],[bird_cv_type_time_t=`cat conftestresult`
],[ AC_MSG_RESULT([test program failed])
AC_MSG_ERROR([Cannot determine time_t size and signedness.])
],[bird_cv_type_time_t="32-bit signed"])
])
case "$bird_cv_type_time_t" in
*64-bit*) AC_DEFINE(TIME_T_IS_64BIT) ;;
esac
case "$bird_cv_type_time_t" in
*unsigned*) ;;
*) AC_DEFINE(TIME_T_IS_SIGNED) ;;
esac
])
AC_DEFUN(BIRD_CHECK_STRUCT_IP_MREQN,
[AC_CACHE_CHECK([for struct ip_mreqn], bird_cv_struct_ip_mreqn,[
AC_TRY_COMPILE([#include <netinet/in.h>
],[struct ip_mreqn x;
],[bird_cv_struct_ip_mreqn=yes
],[bird_cv_struct_ip_mreqn=no
])])
if test "$bird_cv_struct_ip_mreqn" = yes ; then
AC_DEFINE(HAVE_STRUCT_IP_MREQN)
fi
])
AC_DEFUN(BIRD_CHECK_LINUX_VERSION,
[AC_CACHE_CHECK([Linux kernel version], bird_cv_sys_linux_version, [
AC_REQUIRE_CPP()dnl
cat > conftest.$ac_ext <<EOF
[#]line __oline__ "configure"
#include "confdefs.h"
#include <linux/version.h>
VERSION: UTS_RELEASE
EOF
bird_cv_sys_linux_version=`eval "$ac_cpp conftest.$ac_ext" 2>&AC_FD_CC | sed '/^VERSION/!d;s/^VERSION: "//;s/".*//'`
rm -rf conftest*
if test -z "$bird_cv_sys_linux_version" ; then
AC_MSG_RESULT([unknown])
AC_MSG_ERROR([Cannot determine kernel version])
fi
])])
AC_DEFUN(BIRD_CHECK_GCC_OPTIONS,
[AC_CACHE_VAL(bird_cv_c_option_no_pointer_sign, [
cat >conftest.c <<EOF
int main(void)
{ return 0; }
EOF
if $CC -Wall -Wno-pointer-sign conftest.c >&AS_MESSAGE_LOG_FD 2>&1 ; then
bird_cv_c_option_no_pointer_sign=yes
else
bird_cv_c_option_no_pointer_sign=no
fi
rm -rf conftest* a.out
])])
# BIRD_CHECK_PROG_FLAVOR_GNU(PROGRAM-PATH, IF-SUCCESS, [IF-FAILURE])
# copied autoconf internal _AC_PATH_PROG_FLAVOR_GNU
m4_define([BIRD_CHECK_PROG_FLAVOR_GNU],
[# Check for GNU $1
case `"$1" --version 2>&1` in
*GNU*)
$2;;
m4_ifval([$3],
[*)
$3;;
])esac
])#
|
