1: dnl RACOON_PATH_LIBS(FUNCTION, LIB, SEARCH-PATHS [, ACTION-IF-FOUND
2: dnl [, ACTION-IF-NOT-FOUND [, OTHER-LIBRARIES]]])
3: dnl Search for a library defining FUNC, if it's not already available.
4:
5: AC_DEFUN([RACOON_PATH_LIBS],
6: [AC_PREREQ([2.13])
7: AC_CACHE_CHECK([for $2 containing $1], [ac_cv_search_$1],
8: [ac_func_search_save_LIBS="$LIBS"
9: ac_cv_search_$1="no"
10: AC_TRY_LINK_FUNC([$1], [ac_cv_search_$1="none required"],
11: [LIBS="-l$2 $LIBS"
12: AC_TRY_LINK_FUNC([$1], [ac_cv_search_$1="-l$2"], [])])
13: LIBS="$ac_func_search_save_LIBS"
14: ifelse("x$3", "x", , [ test "$ac_cv_search_$1" = "no" && for i in $3; do
15: LIBS="-L$i -l$2 $ac_func_search_save_LIBS"
16: AC_TRY_LINK_FUNC([$1],
17: [ac_cv_search_$1="-L$i -l$2"
18: break])
19: done
20: LIBS="$ac_func_search_save_LIBS" ]) ])
21: if test "$ac_cv_search_$1" != "no"; then
22: test "$ac_cv_search_$1" = "none required" || LIBS="$ac_cv_search_$1 $LIBS"
23: $4
24: else :
25: $5
26: fi])
27:
28: dnl Check if either va_copy() or __va_copy() is available. On linux systems
29: dnl at least one of these should be present.
30: AC_DEFUN([RACOON_CHECK_VA_COPY], [
31: saved_CFLAGS=$CFLAGS
32: CFLAGS="-Wall -O2"
33: AC_CACHE_CHECK([for an implementation of va_copy()],
34: ac_cv_va_copy,[
35: AC_TRY_RUN([#include <stdarg.h>
36: void func (int i, ...) {
37: va_list args1, args2;
38: va_start (args1, i);
39: va_copy (args2, args1);
40: if (va_arg (args1, int) != 1 || va_arg (args2, int) != 1)
41: exit (1);
42: va_end (args1);
43: va_end (args2);
44: }
45: int main() {
46: func (0, 1);
47: return 0;
48: }],
49: [ac_cv_va_copy=yes],
50: [ac_cv_va_copy=no],
51: AC_MSG_WARN(Cross compiling... Unable to test va_copy)
52: [ac_cv_va_copy=no])
53: ])
54: if test x$ac_cv_va_copy != xyes; then
55: AC_CACHE_CHECK([for an implementation of __va_copy()],
56: ac_cv___va_copy,[
57: AC_TRY_RUN([#include <stdarg.h>
58: void func (int i, ...) {
59: va_list args1, args2;
60: va_start (args1, i);
61: __va_copy (args2, args1);
62: if (va_arg (args1, int) != 1 || va_arg (args2, int) != 1)
63: exit (1);
64: va_end (args1);
65: va_end (args2);
66: }
67: int main() {
68: func (0, 1);
69: return 0;
70: }],
71: [ac_cv___va_copy=yes],
72: [ac_cv___va_copy=no],
73: AC_MSG_WARN(Cross compiling... Unable to test __va_copy)
74: [ac_cv___va_copy=no])
75: ])
76: fi
77:
78: if test "x$ac_cv_va_copy" = "xyes"; then
79: va_copy_func=va_copy
80: elif test "x$ac_cv___va_copy" = "xyes"; then
81: va_copy_func=__va_copy
82: fi
83:
84: if test -n "$va_copy_func"; then
85: AC_DEFINE_UNQUOTED(VA_COPY,$va_copy_func,
86: [A 'va_copy' style function])
87: else
88: AC_MSG_WARN([Hmm, neither va_copy() nor __va_copy() found.])
89: AC_MSG_WARN([Using a generic fallback.])
90: fi
91: CFLAGS=$saved_CFLAGS
92: unset saved_CFLAGS
93: ])
94:
95: AC_DEFUN([RACOON_CHECK_BUGGY_GETADDRINFO], [
96: AC_MSG_CHECKING(getaddrinfo bug)
97: saved_CFLAGS=$CFLAGS
98: CFLAGS="-Wall -O2"
99: AC_TRY_RUN([
100: #include <sys/types.h>
101: #include <sys/socket.h>
102: #include <netdb.h>
103: #include <stdlib.h>
104: #include <string.h>
105: #include <netinet/in.h>
106:
107: int main()
108: {
109: int passive, gaierr, inet4 = 0, inet6 = 0;
110: struct addrinfo hints, *ai, *aitop;
111: char straddr[INET6_ADDRSTRLEN], strport[16];
112:
113: for (passive = 0; passive <= 1; passive++) {
114: memset(&hints, 0, sizeof(hints));
115: hints.ai_family = AF_UNSPEC;
116: hints.ai_flags = passive ? AI_PASSIVE : 0;
117: hints.ai_protocol = IPPROTO_TCP;
118: hints.ai_socktype = SOCK_STREAM;
119: if ((gaierr = getaddrinfo(NULL, "54321", &hints, &aitop)) != 0) {
120: (void)gai_strerror(gaierr);
121: goto bad;
122: }
123: for (ai = aitop; ai; ai = ai->ai_next) {
124: if (ai->ai_addr == NULL ||
125: ai->ai_addrlen == 0 ||
126: getnameinfo(ai->ai_addr, ai->ai_addrlen,
127: straddr, sizeof(straddr), strport, sizeof(strport),
128: NI_NUMERICHOST|NI_NUMERICSERV) != 0) {
129: goto bad;
130: }
131: switch (ai->ai_family) {
132: case AF_INET:
133: if (strcmp(strport, "54321") != 0) {
134: goto bad;
135: }
136: if (passive) {
137: if (strcmp(straddr, "0.0.0.0") != 0) {
138: goto bad;
139: }
140: } else {
141: if (strcmp(straddr, "127.0.0.1") != 0) {
142: goto bad;
143: }
144: }
145: inet4++;
146: break;
147: case AF_INET6:
148: if (strcmp(strport, "54321") != 0) {
149: goto bad;
150: }
151: if (passive) {
152: if (strcmp(straddr, "::") != 0) {
153: goto bad;
154: }
155: } else {
156: if (strcmp(straddr, "::1") != 0) {
157: goto bad;
158: }
159: }
160: inet6++;
161: break;
162: case AF_UNSPEC:
163: goto bad;
164: break;
165: default:
166: /* another family support? */
167: break;
168: }
169: }
170: }
171:
172: if (!(inet4 == 0 || inet4 == 2))
173: goto bad;
174: if (!(inet6 == 0 || inet6 == 2))
175: goto bad;
176:
177: if (aitop)
178: freeaddrinfo(aitop);
179: exit(0);
180:
181: bad:
182: if (aitop)
183: freeaddrinfo(aitop);
184: exit(1);
185: }
186: ],
187: AC_MSG_RESULT(good)
188: buggygetaddrinfo=no,
189: AC_MSG_RESULT(buggy)
190: buggygetaddrinfo=yes,
191: AC_MSG_RESULT(Cross compiling ... Assuming getaddrinfo is not buggy.)
192: buggygetaddrinfo=no)
193: CFLAGS=$saved_CFLAGS
194: unset saved_CFLAGS
195: ])
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