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
|
# Copyright (C) The libssh2 project and its contributors.
# SPDX-License-Identifier: BSD-3-Clause
include(CheckCSourceCompiles)
# - check_nonblocking_socket_support()
#
# Check for how to set a socket to non-blocking state. There seems to exist
# four known different ways, with the one used almost everywhere being POSIX
# and XPG3, while the other different ways for different systems (old BSD,
# Windows and Amiga).
#
# One of the following variables will be set indicating the supported
# method (if any):
# HAVE_O_NONBLOCK
# HAVE_FIONBIO
# HAVE_IOCTLSOCKET_CASE
# HAVE_SO_NONBLOCK
#
# The following variables may be set before calling this macro to
# modify the way the check is run:
#
# CMAKE_REQUIRED_FLAGS = string of compile command line flags
# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
# CMAKE_REQUIRED_INCLUDES = list of include directories
# CMAKE_REQUIRED_LIBRARIES = list of libraries to link
#
macro(check_nonblocking_socket_support)
# There are two known platforms (AIX 3.x and SunOS 4.1.x) where the
# O_NONBLOCK define is found but does not work.
check_c_source_compiles("
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#if defined(sun) || defined(__sun__) || defined(__SUNPRO_C) || defined(__SUNPRO_CC)
# if defined(__SVR4) || defined(__srv4__)
# define PLATFORM_SOLARIS
# else
# define PLATFORM_SUNOS4
# endif
#endif
#if (defined(_AIX) || defined(__xlC__)) && !defined(_AIX41)
# define PLATFORM_AIX_V3
#endif
#if defined(PLATFORM_SUNOS4) || defined(PLATFORM_AIX_V3) || defined(__BEOS__)
#error \"O_NONBLOCK does not work on this platform\"
#endif
int main(void)
{
int socket = 0;
(void)fcntl(socket, F_SETFL, O_NONBLOCK);
}"
HAVE_O_NONBLOCK)
if(NOT HAVE_O_NONBLOCK)
check_c_source_compiles("/* FIONBIO test (old-style unix) */
#include <unistd.h>
#include <stropts.h>
int main(void)
{
int socket = 0;
int flags = 0;
(void)ioctl(socket, FIONBIO, &flags);
}"
HAVE_FIONBIO)
if(NOT HAVE_FIONBIO)
check_c_source_compiles("/* IoctlSocket test (Amiga?) */
#include <sys/ioctl.h>
int main(void)
{
int socket = 0;
(void)IoctlSocket(socket, FIONBIO, (long)1);
}"
HAVE_IOCTLSOCKET_CASE)
if(NOT HAVE_IOCTLSOCKET_CASE)
check_c_source_compiles("/* SO_NONBLOCK test (BeOS) */
#include <socket.h>
int main(void)
{
long b = 1;
int socket = 0;
(void)setsockopt(socket, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b));
}"
HAVE_SO_NONBLOCK)
endif()
endif()
endif()
endmacro()
|
