Annotation of embedaddon/bird/aclocal.m4, revision 1.1.1.1
1.1 misho 1: dnl ** Additional Autoconf tests for BIRD configure script
2: dnl ** (c) 1999 Martin Mares <mj@ucw.cz>
3:
4: AC_DEFUN(BIRD_CHECK_INTEGERS,
5: [AC_CHECK_SIZEOF(char, 0)
6: AC_CHECK_SIZEOF(short int, 0)
7: AC_CHECK_SIZEOF(int, 0)
8: AC_CHECK_SIZEOF(long int, 0)
9: AC_CHECK_SIZEOF(long long int, 0)
10: for size in 1 2 4 8; do
11: bits=`expr $size "*" 8`
12: AC_MSG_CHECKING([for $bits-bit type])
13: if test $ac_cv_sizeof_int = $size ; then
14: res=int
15: elif test $ac_cv_sizeof_char = $size ; then
16: res=char
17: elif test $ac_cv_sizeof_short_int = $size ; then
18: res="short int"
19: elif test $ac_cv_sizeof_long_int = $size ; then
20: res="long int"
21: elif test $ac_cv_sizeof_long_long_int = $size ; then
22: res="long long int"
23: else
24: AC_MSG_RESULT([not found])
25: AC_MSG_ERROR([Cannot find $bits-bit integer type.])
26: fi
27: AC_MSG_RESULT($res)
28: AC_DEFINE_UNQUOTED(INTEGER_$bits, $res)
29: done
30: ])
31:
32: dnl BIRD_CHECK_ENDIAN is unused and obsolete
33: AC_DEFUN(BIRD_CHECK_ENDIAN,
34: [AC_CACHE_CHECK([CPU endianity], bird_cv_c_endian,[
35: AC_TRY_RUN([
36: #include <stdio.h>
37:
38: unsigned int x = 0x12345678;
39: unsigned char *z = (unsigned char *) &x;
40:
41: int main(void)
42: {
43: FILE *f = fopen("conftestresult", "w");
44: if (!f) return 10;
45: fprintf(f, "%02x %02x %02x %02x", *z, *(z+1), *(z+2), *(z+3));
46: fclose(f);
47: exit(0);
48: }
49: ],[
50: endian=`cat conftestresult`
51: if test "$endian" = "12 34 56 78" ; then
52: bird_cv_c_endian=big-endian
53: elif test "$endian" = "78 56 34 12" ; then
54: bird_cv_c_endian=little-endian
55: fi
56: ],[endian="test program failed"],[endian="not available, we're cross compiling"])
57: if test -z "$bird_cv_c_endian" ; then
58: AC_MSG_RESULT($endian)
59: AC_MSG_ERROR([Cannot determine CPU endianity.])
60: fi
61: ])
62: case $bird_cv_c_endian in
63: big-endian) AC_DEFINE(CPU_BIG_ENDIAN) ;;
64: little-endian) AC_DEFINE(CPU_LITTLE_ENDIAN) ;;
65: esac
66: ])
67:
68: AC_DEFUN(BIRD_CHECK_STRUCT_ALIGN,
69: [AC_CACHE_CHECK([usual alignment of structures],bird_cv_c_struct_align,[
70: AC_TRY_RUN([
71: #include <stdio.h>
72:
73: struct { char x; long int y; } ary[2];
74:
75: int main(void)
76: {
77: FILE *f = fopen("conftestresult", "w");
78: if (!f) return 10;
79: fprintf(f, "%d", sizeof(ary)/2);
80: fclose(f);
81: exit(0);
82: }
83: ],[
84: bird_cv_c_struct_align=`cat conftestresult`
85: ],[
86: AC_MSG_RESULT([test program failed])
87: AC_MSG_ERROR([Cannot determine structure alignment])
88: ],[bird_cv_c_struct_align=16])
89: ])
90: AC_DEFINE_UNQUOTED(CPU_STRUCT_ALIGN, $bird_cv_c_struct_align)
91: ])
92:
93: AC_DEFUN(BIRD_CHECK_TIME_T,
94: [AC_CACHE_CHECK([characteristics of time_t], bird_cv_type_time_t, [
95: AC_TRY_RUN([
96: #include <stdio.h>
97: #include <sys/time.h>
98: #include <limits.h>
99:
100: int main(void)
101: {
102: FILE *f = fopen("conftestresult", "w");
103: if (!f) return 10;
104: fprintf(f, "%d-bit ", sizeof(time_t)*CHAR_BIT);
105: if ((time_t) -1 > 0) fprintf(f, "un");
106: fprintf(f, "signed");
107: fclose(f);
108: exit(0);
109: }
110: ],[bird_cv_type_time_t=`cat conftestresult`
111: ],[ AC_MSG_RESULT([test program failed])
112: AC_MSG_ERROR([Cannot determine time_t size and signedness.])
113: ],[bird_cv_type_time_t="32-bit signed"])
114: ])
115: case "$bird_cv_type_time_t" in
116: *64-bit*) AC_DEFINE(TIME_T_IS_64BIT) ;;
117: esac
118: case "$bird_cv_type_time_t" in
119: *unsigned*) ;;
120: *) AC_DEFINE(TIME_T_IS_SIGNED) ;;
121: esac
122: ])
123:
124: AC_DEFUN(BIRD_CHECK_STRUCT_IP_MREQN,
125: [AC_CACHE_CHECK([for struct ip_mreqn], bird_cv_struct_ip_mreqn,[
126: AC_TRY_COMPILE([#include <netinet/in.h>
127: ],[struct ip_mreqn x;
128: ],[bird_cv_struct_ip_mreqn=yes
129: ],[bird_cv_struct_ip_mreqn=no
130: ])])
131: if test "$bird_cv_struct_ip_mreqn" = yes ; then
132: AC_DEFINE(HAVE_STRUCT_IP_MREQN)
133: fi
134: ])
135:
136: AC_DEFUN(BIRD_CHECK_PTHREADS,
137: [
138: bird_tmp_cflags="$CFLAGS"
139:
140: CFLAGS="$CFLAGS -pthread"
141: AC_CACHE_CHECK([whether POSIX threads are available], bird_cv_lib_pthreads,
142: [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], [[pthread_t pt; pthread_create(&pt, NULL, NULL, NULL); pthread_spinlock_t lock; pthread_spin_lock(&lock); ]])],
143: [bird_cv_lib_pthreads=yes], [bird_cv_lib_pthreads=no])])
144:
145: CFLAGS="$bird_tmp_cflags"
146: ])
147:
148: AC_DEFUN(BIRD_CHECK_GCC_OPTION,
149: [
150: bird_tmp_cflags="$CFLAGS"
151:
152: CFLAGS="$3 $2"
153: AC_CACHE_CHECK([whether CC supports $2], $1,
154: [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], [$1=yes], [$1=no])])
155:
156: CFLAGS="$bird_tmp_cflags"
157: ])
158:
159: AC_DEFUN(BIRD_ADD_GCC_OPTION,
160: [
161: if test "$$1" = yes ; then
162: CFLAGS="$CFLAGS $2"
163: fi
164: ])
165:
166: # BIRD_CHECK_PROG_FLAVOR_GNU(PROGRAM-PATH, IF-SUCCESS, [IF-FAILURE])
167: # copied autoconf internal _AC_PATH_PROG_FLAVOR_GNU
168: m4_define([BIRD_CHECK_PROG_FLAVOR_GNU],
169: [# Check for GNU $1
170: case `"$1" --version 2>&1` in
171: *GNU*)
172: $2;;
173: m4_ifval([$3],
174: [*)
175: $3;;
176: ])esac
177: ])#
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