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
|
# socketlib.m4 serial 1
dnl Copyright (C) 2008-2017 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl gl_SOCKETLIB
dnl Determines the library to use for socket functions.
dnl Sets and AC_SUBSTs LIBSOCKET.
AC_DEFUN([gl_SOCKETLIB],
[
gl_PREREQ_SYS_H_WINSOCK2 dnl for HAVE_WINSOCK2_H
LIBSOCKET=
if test $HAVE_WINSOCK2_H = 1; then
dnl Native Windows API (not Cygwin).
AC_CACHE_CHECK([if we need to call WSAStartup in winsock2.h and -lws2_32],
[gl_cv_func_wsastartup], [
gl_save_LIBS="$LIBS"
LIBS="$LIBS -lws2_32"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif]], [[
WORD wVersionRequested = MAKEWORD(1, 1);
WSADATA wsaData;
int err = WSAStartup(wVersionRequested, &wsaData);
WSACleanup ();]])],
gl_cv_func_wsastartup=yes, gl_cv_func_wsastartup=no)
LIBS="$gl_save_LIBS"
])
if test "$gl_cv_func_wsastartup" = "yes"; then
AC_DEFINE([WINDOWS_SOCKETS], [1], [Define if WSAStartup is needed.])
LIBSOCKET='-lws2_32'
fi
else
dnl Unix API.
dnl Solaris has most socket functions in libsocket.
dnl Haiku has most socket functions in libnetwork.
dnl BeOS has most socket functions in libnet.
AC_CACHE_CHECK([for library containing setsockopt], [gl_cv_lib_socket], [
gl_cv_lib_socket=
AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern
#ifdef __cplusplus
"C"
#endif
char setsockopt();]], [[setsockopt();]])],
[],
[gl_save_LIBS="$LIBS"
LIBS="$gl_save_LIBS -lsocket"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern
#ifdef __cplusplus
"C"
#endif
char setsockopt();]], [[setsockopt();]])],
[gl_cv_lib_socket="-lsocket"])
if test -z "$gl_cv_lib_socket"; then
LIBS="$gl_save_LIBS -lnetwork"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern
#ifdef __cplusplus
"C"
#endif
char setsockopt();]], [[setsockopt();]])],
[gl_cv_lib_socket="-lnetwork"])
if test -z "$gl_cv_lib_socket"; then
LIBS="$gl_save_LIBS -lnet"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern
#ifdef __cplusplus
"C"
#endif
char setsockopt();]], [[setsockopt();]])],
[gl_cv_lib_socket="-lnet"])
fi
fi
LIBS="$gl_save_LIBS"
])
if test -z "$gl_cv_lib_socket"; then
gl_cv_lib_socket="none needed"
fi
])
if test "$gl_cv_lib_socket" != "none needed"; then
LIBSOCKET="$gl_cv_lib_socket"
fi
fi
AC_SUBST([LIBSOCKET])
])
|
