etr_socket_nsl.m4

Revision 41, 3.4 kB (checked in by alo, 3 years ago)
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Line
1	dnl @synopsis ETR_SOCKET_NSL
2	dnl
3	dnl This macro figures out what libraries are required on this platform
4	dnl to link sockets programs. It's usually -lsocket and/or -lnsl or
5	dnl neither. We test for all three combinations.
6	dnl
7	dnl @version $Id: etr_socket_nsl.m4,v 1.1 2003/08/15 21:06:19 alo Exp $
8	dnl @author Warren Young <warren@etr-usa.com>
9	dnl
10	AC_DEFUN([ETR_SOCKET_NSL],
11	[
12	AC_CACHE_CHECK(for libraries containing socket functions,
13	ac_cv_socket_libs, [
14	oCFLAGS=$CFLAGS
15
16	AC_TRY_LINK([
17	#include <sys/types.h>
18	#include <sys/socket.h>
19	#include <netinet/in.h>
20	#include <arpa/inet.h>
21	],
22	[
23	struct in_addr add;
24	int sd = socket(AF_INET, SOCK_STREAM, 0);
25	inet_ntoa(add);
26	],
27	ac_cv_socket_libs=-lc, ac_cv_socket_libs=no)
28
29	if test x"$ac_cv_socket_libs" = "xno"
30	then
31	CFLAGS="$oCFLAGS -lsocket"
32	AC_TRY_LINK([
33	#include <sys/types.h>
34	#include <sys/socket.h>
35	#include <netinet/in.h>
36	#include <arpa/inet.h>
37	],
38	[
39	struct in_addr add;
40	int sd = socket(AF_INET, SOCK_STREAM, 0);
41	inet_ntoa(add);
42	],
43	ac_cv_socket_libs=-lsocket, ac_cv_socket_libs=no)
44	fi
45
46	if test x"$ac_cv_socket_libs" = "xno"
47	then
48	CFLAGS="$oCFLAGS -lsocket -lnsl"
49	AC_TRY_LINK([
50	#include <sys/types.h>
51	#include <sys/socket.h>
52	#include <netinet/in.h>
53	#include <arpa/inet.h>
54	],
55	[
56	struct in_addr add;
57	int sd = socket(AF_INET, SOCK_STREAM, 0);
58	inet_ntoa(add);
59	],
60	ac_cv_socket_libs="-lsocket -lnsl", ac_cv_socket_libs=no)
61	fi
62
63	if test x"$ac_cv_socket_libs" = "xno"
64	then
65	CFLAGS="$oCFLAGS -lws2_32"
66	AC_TRY_LINK([
67	#include <windows.h>
68	#include <stdlib.h>
69	#include <stdio.h>
70	#include <string.h>
71	#include <malloc.h>
72	#include <winsock2.h>
73	#include <ws2tcpip.h>
74	#include <process.h>
75	#include <io.h>
76	#include <direct.h>
77	],
78	[
79	struct in_addr add;
80	int sd = socket(AF_INET, SOCK_STREAM, 0);
81	inet_ntoa(add);
82	],
83	ac_cv_socket_libs="-lws2_32", ac_cv_socket_libs=no)
84	fi
85
86	CFLAGS=$oCFLAGS
87	])
88
89	if test x"$ac_cv_socket_libs" = "xno"
90	then
91	AC_MSG_ERROR([Cannot find socket libraries])
92	elif test x"$ac_cv_socket_libs" = "x-lc"
93	then
94	ETR_SOCKET_LIBS=""
95	else
96	ETR_SOCKET_LIBS="$ac_cv_socket_libs"
97	fi
98
99	AC_SUBST(ETR_SOCKET_LIBS)
100	]) dnl ETR_SOCKET_NSL

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