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-rw-r--r--ares/Makefile.dj1
-rw-r--r--ares/Makefile.netware3
-rw-r--r--ares/acinclude.m4148
-rw-r--r--ares/ares_process.c53
-rw-r--r--ares/config-win32.h5
-rw-r--r--ares/configure.ac10
-rw-r--r--ares/m4/cares-confopts.m474
-rw-r--r--ares/m4/cares-functions.m4786
8 files changed, 891 insertions, 189 deletions
diff --git a/ares/Makefile.dj b/ares/Makefile.dj
index 7ee6e0447..26a32fbf1 100644
--- a/ares/Makefile.dj
+++ b/ares/Makefile.dj
@@ -11,6 +11,7 @@ include ../packages/DOS/common.dj
include Makefile.inc
CFLAGS += -DWATT32 -DHAVE_AF_INET6 -DHAVE_PF_INET6 -DHAVE_IOCTLSOCKET \
+ -DHAVE_IOCTLSOCKET_FIONBIO \
-DHAVE_STRUCT_IN6_ADDR -DHAVE_SOCKADDR_IN6_SIN6_SCOPE_ID \
-DHAVE_SYS_TIME_H -DHAVE_STRUCT_SOCKADDR_IN6 -DHAVE_STRUCT_ADDRINFO \
-DHAVE_SIGNAL_H -DHAVE_SIG_ATOMIC_T -DRETSIGTYPE='void' \
diff --git a/ares/Makefile.netware b/ares/Makefile.netware
index 9ed7ba0c9..0a908f055 100644
--- a/ares/Makefile.netware
+++ b/ares/Makefile.netware
@@ -350,12 +350,13 @@ endif
@echo $(DL)#define HAVE_ASSERT_H 1$(DL) >> $@
@echo $(DL)#define HAVE_ERR_H 1$(DL) >> $@
@echo $(DL)#define HAVE_FCNTL_H 1$(DL) >> $@
- @echo $(DL)#define HAVE_FIONBIO 1$(DL) >> $@
@echo $(DL)#define HAVE_GETHOSTBYADDR 1$(DL) >> $@
@echo $(DL)#define HAVE_GETHOSTBYNAME 1$(DL) >> $@
@echo $(DL)#define HAVE_GETPROTOBYNAME 1$(DL) >> $@
@echo $(DL)#define HAVE_GMTIME_R 1$(DL) >> $@
@echo $(DL)#define HAVE_INET_ADDR 1$(DL) >> $@
+ @echo $(DL)#define HAVE_IOCTL 1$(DL) >> $@
+ @echo $(DL)#define HAVE_IOCTL_FIONBIO 1$(DL) >> $@
@echo $(DL)#define HAVE_LL 1$(DL) >> $@
@echo $(DL)#define HAVE_LOCALTIME_R 1$(DL) >> $@
@echo $(DL)#define HAVE_MALLOC_H 1$(DL) >> $@
diff --git a/ares/acinclude.m4 b/ares/acinclude.m4
index abe10d78f..879643dc4 100644
--- a/ares/acinclude.m4
+++ b/ares/acinclude.m4
@@ -1433,154 +1433,6 @@ AC_DEFUN([TYPE_SIG_ATOMIC_T], [
])
-dnl CURL_CHECK_NONBLOCKING_SOCKET
-dnl -------------------------------------------------
-dnl Check for how to set a socket to non-blocking state. There seems to exist
-dnl four known different ways, with the one used almost everywhere being POSIX
-dnl and XPG3, while the other different ways for different systems (old BSD,
-dnl Windows and Amiga).
-dnl
-dnl There are two known platforms (AIX 3.x and SunOS 4.1.x) where the
-dnl O_NONBLOCK define is found but does not work. This condition is attempted
-dnl to get caught in this script by using an excessive number of #ifdefs...
-
-AC_DEFUN([CURL_CHECK_NONBLOCKING_SOCKET], [
- AC_MSG_CHECKING([non-blocking sockets style])
- nonblock="unknown"
- #
- AC_COMPILE_IFELSE([
- AC_LANG_PROGRAM([[
-/* headers for O_NONBLOCK test */
-#include <sys/types.h>
-#include <unistd.h>
-#include <fcntl.h>
-/* */
-#if defined(sun) || defined(__sun__) || \
- defined(__SUNPRO_C) || defined(__SUNPRO_CC)
-# if defined(__SVR4) || defined(__srv4__)
-# define PLATFORM_SOLARIS
-# else
-# define PLATFORM_SUNOS4
-# endif
-#endif
-#if (defined(_AIX) || defined(__xlC__)) && !defined(_AIX41)
-# define PLATFORM_AIX_V3
-#endif
-/* */
-#if defined(PLATFORM_SUNOS4) || defined(PLATFORM_AIX_V3) || defined(__BEOS__)
-#error "O_NONBLOCK does not work on this platform"
-#endif
- ]],[[
- /* O_NONBLOCK source test */
- int socket;
- int flags = fcntl(socket, F_SETFL, flags | O_NONBLOCK);
- ]])
- ],[
- dnl the O_NONBLOCK test was fine
- nonblock="O_NONBLOCK"
- AC_DEFINE(HAVE_O_NONBLOCK, 1,
- [use O_NONBLOCK for non-blocking sockets])
- ])
- #
- if test "$nonblock" = "unknown"; then
- AC_COMPILE_IFELSE([
- AC_LANG_PROGRAM([[
-/* headers for FIONBIO test */
-#include <unistd.h>
-#include <stropts.h>
- ]],[[
- /* FIONBIO source test (old-style unix) */
- int socket;
- int flags = ioctl(socket, FIONBIO, &flags);
- ]])
- ],[
- dnl FIONBIO test was good
- nonblock="FIONBIO"
- AC_DEFINE(HAVE_FIONBIO, 1,
- [use FIONBIO for non-blocking sockets])
- ])
- fi
- #
- if test "$nonblock" = "unknown"; then
- AC_COMPILE_IFELSE([
- AC_LANG_PROGRAM([[
-/* headers for ioctlsocket test (Windows) */
-#undef inline
-#ifdef HAVE_WINDOWS_H
-#ifndef WIN32_LEAN_AND_MEAN
-#define WIN32_LEAN_AND_MEAN
-#endif
-#include <windows.h>
-#ifdef HAVE_WINSOCK2_H
-#include <winsock2.h>
-#else
-#ifdef HAVE_WINSOCK_H
-#include <winsock.h>
-#endif
-#endif
-#endif
- ]],[[
- /* ioctlsocket source code (Windows) */
- SOCKET sd;
- unsigned long flags = 0;
- sd = socket(0, 0, 0);
- ioctlsocket(sd, FIONBIO, &flags);
- ]])
- ],[
- dnl ioctlsocket test was good
- nonblock="ioctlsocket"
- AC_DEFINE(HAVE_IOCTLSOCKET, 1,
- [use ioctlsocket() for non-blocking sockets])
- ])
- fi
- #
- if test "$nonblock" = "unknown"; then
- AC_LINK_IFELSE([
- AC_LANG_PROGRAM([[
-/* headers for IoctlSocket test (Amiga?) */
-#include <sys/ioctl.h>
- ]],[[
- /* IoctlSocket source code (Amiga?) */
- int socket;
- int flags = IoctlSocket(socket, FIONBIO, (long)1);
- ]])
- ],[
- dnl Ioctlsocket test was good
- nonblock="IoctlSocket"
- AC_DEFINE(HAVE_IOCTLSOCKET_CASE, 1,
- [use Ioctlsocket() for non-blocking sockets])
- ])
- fi
- #
- if test "$nonblock" = "unknown"; then
- AC_COMPILE_IFELSE([
- AC_LANG_PROGRAM([[
-/* headers for SO_NONBLOCK test (BeOS) */
-#include <socket.h>
- ]],[[
- /* SO_NONBLOCK source code (BeOS) */
- long b = 1;
- int socket;
- int flags = setsockopt(socket, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b));
- ]])
- ],[
- dnl the SO_NONBLOCK test was good
- nonblock="SO_NONBLOCK"
- AC_DEFINE(HAVE_SO_NONBLOCK, 1,
- [use SO_NONBLOCK for non-blocking sockets])
- ])
- fi
- #
- AC_MSG_RESULT($nonblock)
- #
- if test "$nonblock" = "unknown"; then
- AC_DEFINE(HAVE_DISABLED_NONBLOCKING, 1,
- [disabled non-blocking sockets])
- AC_MSG_WARN([non-block sockets disabled])
- fi
-])
-
-
dnl TYPE_IN_ADDR_T
dnl -------------------------------------------------
dnl Check for in_addr_t: it is used to receive the return code of inet_addr()
diff --git a/ares/ares_process.c b/ares/ares_process.c
index b7f375e19..05341aa64 100644
--- a/ares/ares_process.c
+++ b/ares/ares_process.c
@@ -805,68 +805,51 @@ void ares__send_query(ares_channel channel, struct query *query,
static int setsocknonblock(ares_socket_t sockfd, /* operate on this */
int nonblock /* TRUE or FALSE */)
{
-#undef SETBLOCK
-#define SETBLOCK 0
-#ifdef HAVE_O_NONBLOCK
+#if defined(USE_BLOCKING_SOCKETS)
+
+ return 0; /* returns success */
+
+#elif defined(HAVE_FCNTL_O_NONBLOCK)
+
/* most recent unix versions */
int flags;
-
flags = fcntl(sockfd, F_GETFL, 0);
if (FALSE != nonblock)
return fcntl(sockfd, F_SETFL, flags | O_NONBLOCK);
else
return fcntl(sockfd, F_SETFL, flags & (~O_NONBLOCK));
-#undef SETBLOCK
-#define SETBLOCK 1
-#endif
-#if defined(HAVE_FIONBIO) && (SETBLOCK == 0)
+#elif defined(HAVE_IOCTL_FIONBIO)
+
/* older unix versions */
int flags;
-
flags = nonblock;
return ioctl(sockfd, FIONBIO, &flags);
-#undef SETBLOCK
-#define SETBLOCK 2
-#endif
-#if defined(HAVE_IOCTLSOCKET) && (SETBLOCK == 0)
+#elif defined(HAVE_IOCTLSOCKET_FIONBIO)
+
#ifdef WATT32
char flags;
#else
- /* Windows? */
+ /* Windows */
unsigned long flags;
#endif
flags = nonblock;
-
return ioctlsocket(sockfd, FIONBIO, &flags);
-#undef SETBLOCK
-#define SETBLOCK 3
-#endif
-#if defined(HAVE_IOCTLSOCKET_CASE) && (SETBLOCK == 0)
- /* presumably for Amiga */
+#elif defined(HAVE_IOCTLSOCKET_CAMEL_FIONBIO)
+
+ /* Amiga */
return IoctlSocket(sockfd, FIONBIO, (long)nonblock);
-#undef SETBLOCK
-#define SETBLOCK 4
-#endif
-#if defined(HAVE_SO_NONBLOCK) && (SETBLOCK == 0)
+#elif defined(HAVE_SETSOCKOPT_SO_NONBLOCK)
+
/* BeOS */
long b = nonblock ? 1 : 0;
return setsockopt(sockfd, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b));
-#undef SETBLOCK
-#define SETBLOCK 5
-#endif
-#ifdef HAVE_DISABLED_NONBLOCKING
- return 0; /* returns success */
-#undef SETBLOCK
-#define SETBLOCK 6
-#endif
-
-#if (SETBLOCK == 0)
-#error "no non-blocking method was found/used/set"
+#else
+# error "no non-blocking method was found/used/set"
#endif
}
diff --git a/ares/config-win32.h b/ares/config-win32.h
index 9e8f10c55..2245b0386 100644
--- a/ares/config-win32.h
+++ b/ares/config-win32.h
@@ -76,9 +76,12 @@
/* FUNCTIONS */
/* ---------------------------------------------------------------- */
-/* Define if you have the ioctlsocket function. */
+/* Define if you have the ioctlsocket function. */
#define HAVE_IOCTLSOCKET 1
+/* Define if you have a working ioctlsocket FIONBIO function. */
+#define HAVE_IOCTLSOCKET_FIONBIO 1
+
/* Define if you have the strcasecmp function. */
/* #define HAVE_STRCASECMP 1 */
diff --git a/ares/configure.ac b/ares/configure.ac
index 641a83e3e..1b1b20d59 100644
--- a/ares/configure.ac
+++ b/ares/configure.ac
@@ -553,12 +553,17 @@ CURL_CHECK_FUNC_RECVFROM
CURL_CHECK_FUNC_SEND
CURL_CHECK_MSG_NOSIGNAL
+CARES_CHECK_FUNC_FCNTL
CARES_CHECK_FUNC_FREEADDRINFO
CARES_CHECK_FUNC_GETADDRINFO
CARES_CHECK_FUNC_GETHOSTNAME
CARES_CHECK_FUNC_GETSERVBYPORT_R
CARES_CHECK_FUNC_INET_NTOP
CARES_CHECK_FUNC_INET_PTON
+CARES_CHECK_FUNC_IOCTL
+CARES_CHECK_FUNC_IOCTLSOCKET
+CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL
+CARES_CHECK_FUNC_SETSOCKOPT
CARES_CHECK_FUNC_STRCASECMP
CARES_CHECK_FUNC_STRCMPI
CARES_CHECK_FUNC_STRDUP
@@ -851,8 +856,6 @@ dnl and get the types of five of its arguments.
CURL_CHECK_FUNC_GETNAMEINFO
-CURL_CHECK_NONBLOCKING_SOCKET
-
AC_C_BIGENDIAN(
[AC_DEFINE(ARES_BIG_ENDIAN, 1,
[define this if ares is built for a big endian system])],
@@ -883,6 +886,9 @@ if test -n "$RANDOM_FILE" && test X"$RANDOM_FILE" != Xno ; then
[a suitable file/device to read random data from])
fi
+CARES_CHECK_OPTION_NONBLOCKING
+CARES_CHECK_NONBLOCKING_SOCKET
+
CARES_PRIVATE_LIBS="$LIBS"
AC_SUBST(CARES_PRIVATE_LIBS)
diff --git a/ares/m4/cares-confopts.m4 b/ares/m4/cares-confopts.m4
index 17a6875f3..c34197a48 100644
--- a/ares/m4/cares-confopts.m4
+++ b/ares/m4/cares-confopts.m4
@@ -16,7 +16,7 @@
#***************************************************************************
# File version for 'aclocal' use. Keep it a single number.
-# serial 2
+# serial 3
dnl CARES_CHECK_OPTION_DEBUG
@@ -52,6 +52,38 @@ AC_HELP_STRING([--disable-debug],[Disable debug build options]),
])
+dnl CARES_CHECK_OPTION_NONBLOCKING
+dnl -------------------------------------------------
+dnl Verify if configure has been invoked with option
+dnl --enable-nonblocking or --disable-nonblocking, and
+dnl set shell variable want_nonblocking as appropriate.
+
+AC_DEFUN([CARES_CHECK_OPTION_NONBLOCKING], [
+ AC_BEFORE([$0],[CARES_CHECK_NONBLOCKING_SOCKET])dnl
+ AC_MSG_CHECKING([whether to enable non-blocking communications])
+ OPT_NONBLOCKING="default"
+ AC_ARG_ENABLE(nonblocking,
+AC_HELP_STRING([--enable-nonblocking],[Enable non-blocking communications])
+AC_HELP_STRING([--disable-nonblocking],[Disable non-blocking communications]),
+ OPT_NONBLOCKING=$enableval)
+ case "$OPT_NONBLOCKING" in
+ no)
+ dnl --disable-nonblocking option used
+ want_nonblocking="no"
+ ;;
+ default)
+ dnl configure option not specified
+ want_nonblocking="yes"
+ ;;
+ *)
+ dnl --enable-nonblocking option used
+ want_nonblocking="yes"
+ ;;
+ esac
+ AC_MSG_RESULT([$want_nonblocking])
+])
+
+
dnl CARES_CHECK_OPTION_OPTIMIZE
dnl -------------------------------------------------
dnl Verify if configure has been invoked with option
@@ -140,3 +172,43 @@ AC_HELP_STRING([--disable-warnings],[Disable strict compiler warnings]),
esac
AC_MSG_RESULT([$want_warnings])
])
+
+
+dnl CARES_CHECK_NONBLOCKING_SOCKET
+dnl -------------------------------------------------
+dnl Check for how to set a socket into non-blocking state.
+
+AC_DEFUN([CARES_CHECK_NONBLOCKING_SOCKET], [
+ AC_REQUIRE([CARES_CHECK_OPTION_NONBLOCKING])dnl
+ AC_REQUIRE([CARES_CHECK_FUNC_FCNTL])dnl
+ AC_REQUIRE([CARES_CHECK_FUNC_IOCTL])dnl
+ AC_REQUIRE([CARES_CHECK_FUNC_IOCTLSOCKET])dnl
+ AC_REQUIRE([CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL])dnl
+ AC_REQUIRE([CARES_CHECK_FUNC_SETSOCKOPT])dnl
+ #
+ tst_method="unknown"
+ if test "$want_nonblocking" = "yes"; then
+ AC_MSG_CHECKING([how to set a socket into non-blocking mode])
+ if test "x$ac_cv_func_fcntl_o_nonblock" = "xyes"; then
+ tst_method="fcntl O_NONBLOCK"
+ elif test "x$ac_cv_func_ioctl_fionbio" = "xyes"; then
+ tst_method="ioctl FIONBIO"
+ elif test "x$ac_cv_func_ioctlsocket_fionbio" = "xyes"; then
+ tst_method="ioctlsocket FIONBIO"
+ elif test "x$ac_cv_func_ioctlsocket_camel_fionbio" = "xyes"; then
+ tst_method="IoctlSocket FIONBIO"
+ elif test "x$ac_cv_func_setsockopt_so_nonblock" = "xyes"; then
+ tst_method="setsockopt SO_NONBLOCK"
+ fi
+ AC_MSG_RESULT([$tst_method])
+ if test "$tst_method" = "unknown"; then
+ AC_MSG_WARN([cannot determine non-blocking socket method.])
+ fi
+ fi
+ if test "$tst_method" = "unknown"; then
+ AC_DEFINE_UNQUOTED(USE_BLOCKING_SOCKETS, 1,
+ [Define to disable non-blocking sockets.])
+ AC_MSG_WARN([non-blocking sockets disabled.])
+ fi
+])
+
diff --git a/ares/m4/cares-functions.m4 b/ares/m4/cares-functions.m4
index 98bd070f0..66bf9cae6 100644
--- a/ares/m4/cares-functions.m4
+++ b/ares/m4/cares-functions.m4
@@ -16,7 +16,7 @@
#***************************************************************************
# File version for 'aclocal' use. Keep it a single number.
-# serial 18
+# serial 19
dnl CARES_INCLUDES_ARPA_INET
@@ -46,6 +46,30 @@ cares_includes_arpa_inet="\
])
+dnl CARES_INCLUDES_FCNTL
+dnl -------------------------------------------------
+dnl Set up variable with list of headers that must be
+dnl included when fcntl.h is to be included.
+
+AC_DEFUN([CARES_INCLUDES_FCNTL], [
+cares_includes_fcntl="\
+/* includes start */
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#ifdef HAVE_STROPTS_H
+# include <fcntl.h>
+#endif
+/* includes end */"
+ AC_CHECK_HEADERS(
+ sys/types.h unistd.h fcntl.h,
+ [], [], [$cares_includes_fcntl])
+])
+
+
dnl CARES_INCLUDES_NETDB
dnl -------------------------------------------------
dnl Set up variable with list of headers that must be
@@ -112,6 +136,36 @@ cares_includes_string="\
])
+dnl CARES_INCLUDES_STROPTS
+dnl -------------------------------------------------
+dnl Set up variable with list of headers that must be
+dnl included when stropts.h is to be included.
+
+AC_DEFUN([CARES_INCLUDES_STROPTS], [
+cares_includes_stropts="\
+/* includes start */
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_SYS_IOCTL_H
+# include <sys/ioctl.h>
+#endif
+#ifdef HAVE_STROPTS_H
+# include <stropts.h>
+#endif
+/* includes end */"
+ AC_CHECK_HEADERS(
+ sys/types.h unistd.h sys/socket.h sys/ioctl.h stropts.h,
+ [], [], [$cares_includes_stropts])
+])
+
+
dnl CARES_INCLUDES_SYS_SOCKET
dnl -------------------------------------------------
dnl Set up variable with list of headers that must be
@@ -230,6 +284,155 @@ cares_includes_ws2tcpip="\
])
+dnl CARES_CHECK_FUNC_FCNTL
+dnl -------------------------------------------------
+dnl Verify if fcntl is available, prototyped, and
+dnl can be compiled. If all of these are true, and
+dnl usage has not been previously disallowed with
+dnl shell variable cares_disallow_fcntl, then
+dnl HAVE_FCNTL will be defined.
+
+AC_DEFUN([CARES_CHECK_FUNC_FCNTL], [
+ AC_REQUIRE([CARES_INCLUDES_FCNTL])dnl
+ #
+ tst_links_fcntl="unknown"
+ tst_proto_fcntl="unknown"
+ tst_compi_fcntl="unknown"
+ tst_allow_fcntl="unknown"
+ #
+ AC_MSG_CHECKING([if fcntl can be linked])
+ AC_LINK_IFELSE([
+ AC_LANG_FUNC_LINK_TRY([fcntl])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_links_fcntl="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_links_fcntl="no"
+ ])
+ #
+ if test "$tst_links_fcntl" = "yes"; then
+ AC_MSG_CHECKING([if fcntl is prototyped])
+ AC_EGREP_CPP([fcntl],[
+ $cares_includes_fcntl
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_proto_fcntl="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_proto_fcntl="no"
+ ])
+ fi
+ #
+ if test "$tst_proto_fcntl" = "yes"; then
+ AC_MSG_CHECKING([if fcntl is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_fcntl
+ ]],[[
+ if(0 != fcntl(0, 0, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_fcntl="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_fcntl="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_fcntl" = "yes"; then
+ AC_MSG_CHECKING([if fcntl usage allowed])
+ if test "x$cares_disallow_fcntl" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_fcntl="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_fcntl="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if fcntl might be used])
+ if test "$tst_links_fcntl" = "yes" &&
+ test "$tst_proto_fcntl" = "yes" &&
+ test "$tst_compi_fcntl" = "yes" &&
+ test "$tst_allow_fcntl" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_FCNTL, 1,
+ [Define to 1 if you have the fcntl function.])
+ ac_cv_func_fcntl="yes"
+ CARES_CHECK_FUNC_FCNTL_O_NONBLOCK
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_fcntl="no"
+ fi
+])
+
+
+dnl CARES_CHECK_FUNC_FCNTL_O_NONBLOCK
+dnl -------------------------------------------------
+dnl Verify if fcntl with status flag O_NONBLOCK is
+dnl available, can be compiled, and seems to work. If
+dnl all of these are true, then HAVE_FCNTL_O_NONBLOCK
+dnl will be defined.
+
+AC_DEFUN([CARES_CHECK_FUNC_FCNTL_O_NONBLOCK], [
+ #
+ tst_compi_fcntl_o_nonblock="unknown"
+ tst_allow_fcntl_o_nonblock="unknown"
+ #
+ case $host_os in
+ sunos4* | aix3* | beos*)
+ dnl O_NONBLOCK does not work on these platforms
+ cares_disallow_fcntl_o_nonblock="yes"
+ ;;
+ esac
+ #
+ if test "$ac_cv_func_fcntl" = "yes"; then
+ AC_MSG_CHECKING([if fcntl O_NONBLOCK is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_fcntl
+ ]],[[
+ int flags = 0;
+ if(0 != fcntl(0, F_SETFL, flags | O_NONBLOCK))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_fcntl_o_nonblock="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_fcntl_o_nonblock="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_fcntl_o_nonblock" = "yes"; then
+ AC_MSG_CHECKING([if fcntl O_NONBLOCK usage allowed])
+ if test "x$cares_disallow_fcntl_o_nonblock" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_fcntl_o_nonblock="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_fcntl_o_nonblock="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if fcntl O_NONBLOCK might be used])
+ if test "$tst_compi_fcntl_o_nonblock" = "yes" &&
+ test "$tst_allow_fcntl_o_nonblock" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_FCNTL_O_NONBLOCK, 1,
+ [Define to 1 if you have a working fcntl O_NONBLOCK function.])
+ ac_cv_func_fcntl_o_nonblock="yes"
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_fcntl_o_nonblock="no"
+ fi
+])
+
+
dnl CARES_CHECK_FUNC_FREEADDRINFO
dnl -------------------------------------------------
dnl Verify if freeaddrinfo is available, prototyped,
@@ -1018,6 +1221,587 @@ AC_DEFUN([CARES_CHECK_FUNC_INET_PTON], [
])
+dnl CARES_CHECK_FUNC_IOCTL
+dnl -------------------------------------------------
+dnl Verify if ioctl is available, prototyped, and
+dnl can be compiled. If all of these are true, and
+dnl usage has not been previously disallowed with
+dnl shell variable cares_disallow_ioctl, then
+dnl HAVE_IOCTL will be defined.
+
+AC_DEFUN([CARES_CHECK_FUNC_IOCTL], [
+ AC_REQUIRE([CARES_INCLUDES_STROPTS])dnl
+ #
+ tst_links_ioctl="unknown"
+ tst_proto_ioctl="unknown"
+ tst_compi_ioctl="unknown"
+ tst_allow_ioctl="unknown"
+ #
+ AC_MSG_CHECKING([if ioctl can be linked])
+ AC_LINK_IFELSE([
+ AC_LANG_FUNC_LINK_TRY([ioctl])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_links_ioctl="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_links_ioctl="no"
+ ])
+ #
+ if test "$tst_links_ioctl" = "yes"; then
+ AC_MSG_CHECKING([if ioctl is prototyped])
+ AC_EGREP_CPP([ioctl],[
+ $cares_includes_stropts
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_proto_ioctl="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_proto_ioctl="no"
+ ])
+ fi
+ #
+ if test "$tst_proto_ioctl" = "yes"; then
+ AC_MSG_CHECKING([if ioctl is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_stropts
+ ]],[[
+ if(0 != ioctl(0, 0, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_ioctl="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_ioctl="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_ioctl" = "yes"; then
+ AC_MSG_CHECKING([if ioctl usage allowed])
+ if test "x$cares_disallow_ioctl" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_ioctl="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_ioctl="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if ioctl might be used])
+ if test "$tst_links_ioctl" = "yes" &&
+ test "$tst_proto_ioctl" = "yes" &&
+ test "$tst_compi_ioctl" = "yes" &&
+ test "$tst_allow_ioctl" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_IOCTL, 1,
+ [Define to 1 if you have the ioctl function.])
+ ac_cv_func_ioctl="yes"
+ CARES_CHECK_FUNC_IOCTL_FIONBIO
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_ioctl="no"
+ fi
+])
+
+
+dnl CARES_CHECK_FUNC_IOCTL_FIONBIO
+dnl -------------------------------------------------
+dnl Verify if ioctl with the FIONBIO command is
+dnl available, can be compiled, and seems to work. If
+dnl all of these are true, then HAVE_IOCTL_FIONBIO
+dnl will be defined.
+
+AC_DEFUN([CARES_CHECK_FUNC_IOCTL_FIONBIO], [
+ #
+ tst_compi_ioctl_fionbio="unknown"
+ tst_allow_ioctl_fionbio="unknown"
+ #
+ if test "$ac_cv_func_ioctl" = "yes"; then
+ AC_MSG_CHECKING([if ioctl FIONBIO is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_stropts
+ ]],[[
+ int flags = 0;
+ if(0 != ioctl(0, FIONBIO, &flags))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_ioctl_fionbio="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_ioctl_fionbio="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_ioctl_fionbio" = "yes"; then
+ AC_MSG_CHECKING([if ioctl FIONBIO usage allowed])
+ if test "x$cares_disallow_ioctl_fionbio" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_ioctl_fionbio="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_ioctl_fionbio="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if ioctl FIONBIO might be used])
+ if test "$tst_compi_ioctl_fionbio" = "yes" &&
+ test "$tst_allow_ioctl_fionbio" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_IOCTL_FIONBIO, 1,
+ [Define to 1 if you have a working ioctl FIONBIO function.])
+ ac_cv_func_ioctl_fionbio="yes"
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_ioctl_fionbio="no"
+ fi
+])
+
+
+dnl CARES_CHECK_FUNC_IOCTLSOCKET
+dnl -------------------------------------------------
+dnl Verify if ioctlsocket is available, prototyped, and
+dnl can be compiled. If all of these are true, and
+dnl usage has not been previously disallowed with
+dnl shell variable cares_disallow_ioctlsocket, then
+dnl HAVE_IOCTLSOCKET will be defined.
+
+AC_DEFUN([CARES_CHECK_FUNC_IOCTLSOCKET], [
+ AC_REQUIRE([CARES_INCLUDES_WINSOCK2])dnl
+ #
+ tst_links_ioctlsocket="unknown"
+ tst_proto_ioctlsocket="unknown"
+ tst_compi_ioctlsocket="unknown"
+ tst_allow_ioctlsocket="unknown"
+ #
+ AC_MSG_CHECKING([if ioctlsocket can be linked])
+ AC_LINK_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_winsock2
+ ]],[[
+ if(0 != ioctlsocket(0, 0, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_links_ioctlsocket="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_links_ioctlsocket="no"
+ ])
+ #
+ if test "$tst_links_ioctlsocket" = "yes"; then
+ AC_MSG_CHECKING([if ioctlsocket is prototyped])
+ AC_EGREP_CPP([ioctlsocket],[
+ $cares_includes_winsock2
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_proto_ioctlsocket="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_proto_ioctlsocket="no"
+ ])
+ fi
+ #
+ if test "$tst_proto_ioctlsocket" = "yes"; then
+ AC_MSG_CHECKING([if ioctlsocket is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_winsock2
+ ]],[[
+ if(0 != ioctlsocket(0, 0, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_ioctlsocket="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_ioctlsocket="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_ioctlsocket" = "yes"; then
+ AC_MSG_CHECKING([if ioctlsocket usage allowed])
+ if test "x$cares_disallow_ioctlsocket" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_ioctlsocket="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_ioctlsocket="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if ioctlsocket might be used])
+ if test "$tst_links_ioctlsocket" = "yes" &&
+ test "$tst_proto_ioctlsocket" = "yes" &&
+ test "$tst_compi_ioctlsocket" = "yes" &&
+ test "$tst_allow_ioctlsocket" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_IOCTLSOCKET, 1,
+ [Define to 1 if you have the ioctlsocket function.])
+ ac_cv_func_ioctlsocket="yes"
+ CARES_CHECK_FUNC_IOCTLSOCKET_FIONBIO
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_ioctlsocket="no"
+ fi
+])
+
+
+dnl CARES_CHECK_FUNC_IOCTLSOCKET_FIONBIO
+dnl -------------------------------------------------
+dnl Verify if ioctlsocket with the FIONBIO command is
+dnl available, can be compiled, and seems to work. If
+dnl all of these are true, then HAVE_IOCTLSOCKET_FIONBIO
+dnl will be defined.
+
+AC_DEFUN([CARES_CHECK_FUNC_IOCTLSOCKET_FIONBIO], [
+ #
+ tst_compi_ioctlsocket_fionbio="unknown"
+ tst_allow_ioctlsocket_fionbio="unknown"
+ #
+ if test "$ac_cv_func_ioctlsocket" = "yes"; then
+ AC_MSG_CHECKING([if ioctlsocket FIONBIO is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_winsock2
+ ]],[[
+ int flags = 0;
+ if(0 != ioctlsocket(0, FIONBIO, &flags))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_ioctlsocket_fionbio="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_ioctlsocket_fionbio="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_ioctlsocket_fionbio" = "yes"; then
+ AC_MSG_CHECKING([if ioctlsocket FIONBIO usage allowed])
+ if test "x$cares_disallow_ioctlsocket_fionbio" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_ioctlsocket_fionbio="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_ioctlsocket_fionbio="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if ioctlsocket FIONBIO might be used])
+ if test "$tst_compi_ioctlsocket_fionbio" = "yes" &&
+ test "$tst_allow_ioctlsocket_fionbio" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_IOCTLSOCKET_FIONBIO, 1,
+ [Define to 1 if you have a working ioctlsocket FIONBIO function.])
+ ac_cv_func_ioctlsocket_fionbio="yes"
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_ioctlsocket_fionbio="no"
+ fi
+])
+
+
+dnl CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL
+dnl -------------------------------------------------
+dnl Verify if IoctlSocket is available, prototyped, and
+dnl can be compiled. If all of these are true, and
+dnl usage has not been previously disallowed with
+dnl shell variable cares_disallow_ioctlsocket_camel,
+dnl then HAVE_IOCTLSOCKET_CAMEL will be defined.
+
+AC_DEFUN([CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL], [
+ AC_REQUIRE([CARES_INCLUDES_STROPTS])dnl
+ #
+ tst_links_ioctlsocket_camel="unknown"
+ tst_proto_ioctlsocket_camel="unknown"
+ tst_compi_ioctlsocket_camel="unknown"
+ tst_allow_ioctlsocket_camel="unknown"
+ #
+ AC_MSG_CHECKING([if IoctlSocket can be linked])
+ AC_LINK_IFELSE([
+ AC_LANG_FUNC_LINK_TRY([IoctlSocket])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_links_ioctlsocket_camel="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_links_ioctlsocket_camel="no"
+ ])
+ #
+ if test "$tst_links_ioctlsocket_camel" = "yes"; then
+ AC_MSG_CHECKING([if IoctlSocket is prototyped])
+ AC_EGREP_CPP([IoctlSocket],[
+ $cares_includes_stropts
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_proto_ioctlsocket_camel="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_proto_ioctlsocket_camel="no"
+ ])
+ fi
+ #
+ if test "$tst_proto_ioctlsocket_camel" = "yes"; then
+ AC_MSG_CHECKING([if IoctlSocket is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_stropts
+ ]],[[
+ if(0 != IoctlSocket(0, 0, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_ioctlsocket_camel="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_ioctlsocket_camel="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_ioctlsocket_camel" = "yes"; then
+ AC_MSG_CHECKING([if IoctlSocket usage allowed])
+ if test "x$cares_disallow_ioctlsocket_camel" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_ioctlsocket_camel="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_ioctlsocket_camel="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if IoctlSocket might be used])
+ if test "$tst_links_ioctlsocket_camel" = "yes" &&
+ test "$tst_proto_ioctlsocket_camel" = "yes" &&
+ test "$tst_compi_ioctlsocket_camel" = "yes" &&
+ test "$tst_allow_ioctlsocket_camel" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_IOCTLSOCKET_CAMEL, 1,
+ [Define to 1 if you have the IoctlSocket camel case function.])
+ ac_cv_func_ioctlsocket_camel="yes"
+ CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL_FIONBIO
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_ioctlsocket_camel="no"
+ fi
+])
+
+
+dnl CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL_FIONBIO
+dnl -------------------------------------------------
+dnl Verify if IoctlSocket with FIONBIO command is available,
+dnl can be compiled, and seems to work. If all of these are
+dnl true, then HAVE_IOCTLSOCKET_CAMEL_FIONBIO will be defined.
+
+AC_DEFUN([CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL_FIONBIO], [
+ #
+ tst_compi_ioctlsocket_camel_fionbio="unknown"
+ tst_allow_ioctlsocket_camel_fionbio="unknown"
+ #
+ if test "$ac_cv_func_ioctlsocket_camel" = "yes"; then
+ AC_MSG_CHECKING([if IoctlSocket FIONBIO is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_stropts
+ ]],[[
+ long flags = 0;
+ if(0 != ioctlsocket(0, FIONBIO, &flags))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_ioctlsocket_camel_fionbio="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_ioctlsocket_camel_fionbio="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_ioctlsocket_camel_fionbio" = "yes"; then
+ AC_MSG_CHECKING([if IoctlSocket FIONBIO usage allowed])
+ if test "x$cares_disallow_ioctlsocket_camel_fionbio" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_ioctlsocket_camel_fionbio="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_ioctlsocket_camel_fionbio="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if IoctlSocket FIONBIO might be used])
+ if test "$tst_compi_ioctlsocket_camel_fionbio" = "yes" &&
+ test "$tst_allow_ioctlsocket_camel_fionbio" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_IOCTLSOCKET_CAMEL_FIONBIO, 1,
+ [Define to 1 if you have a working IoctlSocket camel case FIONBIO function.])
+ ac_cv_func_ioctlsocket_camel_fionbio="yes"
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_ioctlsocket_camel_fionbio="no"
+ fi
+])
+
+
+dnl CARES_CHECK_FUNC_SETSOCKOPT
+dnl -------------------------------------------------
+dnl Verify if setsockopt is available, prototyped, and
+dnl can be compiled. If all of these are true, and
+dnl usage has not been previously disallowed with
+dnl shell variable cares_disallow_setsockopt, then
+dnl HAVE_SETSOCKOPT will be defined.
+
+AC_DEFUN([CARES_CHECK_FUNC_SETSOCKOPT], [
+ AC_REQUIRE([CARES_INCLUDES_WINSOCK2])dnl
+ AC_REQUIRE([CARES_INCLUDES_SYS_SOCKET])dnl
+ #
+ tst_links_setsockopt="unknown"
+ tst_proto_setsockopt="unknown"
+ tst_compi_setsockopt="unknown"
+ tst_allow_setsockopt="unknown"
+ #
+ AC_MSG_CHECKING([if setsockopt can be linked])
+ AC_LINK_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_winsock2
+ $cares_includes_sys_socket
+ ]],[[
+ if(0 != setsockopt(0, 0, 0, 0, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_links_setsockopt="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_links_setsockopt="no"
+ ])
+ #
+ if test "$tst_links_setsockopt" = "yes"; then
+ AC_MSG_CHECKING([if setsockopt is prototyped])
+ AC_EGREP_CPP([setsockopt],[
+ $cares_includes_winsock2
+ $cares_includes_sys_socket
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_proto_setsockopt="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_proto_setsockopt="no"
+ ])
+ fi
+ #
+ if test "$tst_proto_setsockopt" = "yes"; then
+ AC_MSG_CHECKING([if setsockopt is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_winsock2
+ $cares_includes_sys_socket
+ ]],[[
+ if(0 != setsockopt(0, 0, 0, 0, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_setsockopt="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_setsockopt="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_setsockopt" = "yes"; then
+ AC_MSG_CHECKING([if setsockopt usage allowed])
+ if test "x$cares_disallow_setsockopt" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_setsockopt="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_setsockopt="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if setsockopt might be used])
+ if test "$tst_links_setsockopt" = "yes" &&
+ test "$tst_proto_setsockopt" = "yes" &&
+ test "$tst_compi_setsockopt" = "yes" &&
+ test "$tst_allow_setsockopt" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_SETSOCKOPT, 1,
+ [Define to 1 if you have the setsockopt function.])
+ ac_cv_func_setsockopt="yes"
+ CARES_CHECK_FUNC_SETSOCKOPT_SO_NONBLOCK
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_setsockopt="no"
+ fi
+])
+
+
+dnl CARES_CHECK_FUNC_SETSOCKOPT_SO_NONBLOCK
+dnl -------------------------------------------------
+dnl Verify if setsockopt with the SO_NONBLOCK command is
+dnl available, can be compiled, and seems to work. If
+dnl all of these are true, then HAVE_SETSOCKOPT_SO_NONBLOCK
+dnl will be defined.
+
+AC_DEFUN([CARES_CHECK_FUNC_SETSOCKOPT_SO_NONBLOCK], [
+ #
+ tst_compi_setsockopt_so_nonblock="unknown"
+ tst_allow_setsockopt_so_nonblock="unknown"
+ #
+ if test "$ac_cv_func_setsockopt" = "yes"; then
+ AC_MSG_CHECKING([if setsockopt SO_NONBLOCK is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_winsock2
+ $cares_includes_sys_socket
+ ]],[[
+ if(0 != setsockopt(0, SOL_SOCKET, SO_NONBLOCK, 0, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_setsockopt_so_nonblock="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_setsockopt_so_nonblock="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_setsockopt_so_nonblock" = "yes"; then
+ AC_MSG_CHECKING([if setsockopt SO_NONBLOCK usage allowed])
+ if test "x$cares_disallow_setsockopt_so_nonblock" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_setsockopt_so_nonblock="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_setsockopt_so_nonblock="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if setsockopt SO_NONBLOCK might be used])
+ if test "$tst_compi_setsockopt_so_nonblock" = "yes" &&
+ test "$tst_allow_setsockopt_so_nonblock" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_SETSOCKOPT_SO_NONBLOCK, 1,
+ [Define to 1 if you have a working setsockopt SO_NONBLOCK function.])
+ ac_cv_func_setsockopt_so_nonblock="yes"
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_setsockopt_so_nonblock="no"
+ fi
+])
+
+
dnl CARES_CHECK_FUNC_STRCASECMP
dnl -------------------------------------------------
dnl Verify if strcasecmp is available, prototyped, and