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configure: additional flag checks for fcntl() and socket()

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pull/7/head
Yang Tse 14 years ago
parent 08e721e004
commit 5f2a3b0e48
1 changed files with 201 additions and 1 deletions
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  1. 202
      m4/cares-functions.m4

202
m4/cares-functions.m4
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@ -15,7 +15,7 @@
#***************************************************************************
# File version for 'aclocal' use. Keep it a single number.
# serial 41
# serial 42
dnl CARES_INCLUDES_ARPA_INET
@ -699,6 +699,7 @@ AC_DEFUN([CARES_CHECK_FUNC_FCNTL], [
AC_DEFINE_UNQUOTED(HAVE_FCNTL, 1,
[Define to 1 if you have the fcntl function.])
ac_cv_func_fcntl="yes"
CARES_CHECK_FUNC_FCNTL_FD_CLOEXEC
CARES_CHECK_FUNC_FCNTL_O_NONBLOCK
else
AC_MSG_RESULT([no])
@ -707,6 +708,69 @@ AC_DEFUN([CARES_CHECK_FUNC_FCNTL], [
])
dnl CARES_CHECK_FUNC_FCNTL_FD_CLOEXEC
dnl -------------------------------------------------
dnl Verify if fcntl with status flag FD_CLOEXEC is
dnl available, can be compiled, and seems to work. If
dnl all of these are true, then HAVE_FCNTL_FD_CLOEXEC
dnl will be defined.
AC_DEFUN([CARES_CHECK_FUNC_FCNTL_FD_CLOEXEC], [
#
tst_compi_fcntl_fd_cloexec="unknown"
tst_allow_fcntl_fd_cloexec="unknown"
#
case $host_os in
some_systems)
dnl FD_CLOEXEC does not work on these platforms
cares_disallow_fcntl_fd_cloexec="yes"
;;
esac
#
if test "$ac_cv_func_fcntl" = "yes"; then
AC_MSG_CHECKING([if fcntl FD_CLOEXEC is compilable])
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([[
$cares_includes_fcntl
]],[[
int flags = 0;
if(0 != fcntl(0, F_SETFD, flags | FD_CLOEXEC))
return 1;
]])
],[
AC_MSG_RESULT([yes])
tst_compi_fcntl_fd_cloexec="yes"
],[
AC_MSG_RESULT([no])
tst_compi_fcntl_fd_cloexec="no"
])
fi
#
if test "$tst_compi_fcntl_fd_cloexec" = "yes"; then
AC_MSG_CHECKING([if fcntl FD_CLOEXEC usage allowed])
if test "x$cares_disallow_fcntl_fd_cloexec" != "xyes"; then
AC_MSG_RESULT([yes])
tst_allow_fcntl_fd_cloexec="yes"
else
AC_MSG_RESULT([no])
tst_allow_fcntl_fd_cloexec="no"
fi
fi
#
AC_MSG_CHECKING([if fcntl FD_CLOEXEC might be used])
if test "$tst_compi_fcntl_fd_cloexec" = "yes" &&
test "$tst_allow_fcntl_fd_cloexec" = "yes"; then
AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(HAVE_FCNTL_FD_CLOEXEC, 1,
[Define to 1 if you have a working fcntl FD_CLOEXEC function.])
ac_cv_func_fcntl_fd_cloexec="yes"
else
AC_MSG_RESULT([no])
ac_cv_func_fcntl_fd_cloexec="no"
fi
])
dnl CARES_CHECK_FUNC_FCNTL_O_NONBLOCK
dnl -------------------------------------------------
dnl Verify if fcntl with status flag O_NONBLOCK is
@ -2858,6 +2922,8 @@ AC_DEFUN([CARES_CHECK_FUNC_SOCKET], [
AC_DEFINE_UNQUOTED(HAVE_SOCKET, 1,
[Define to 1 if you have the socket function.])
ac_cv_func_socket="yes"
CARES_CHECK_FUNC_SOCKET_SOCK_CLOEXEC
CARES_CHECK_FUNC_SOCKET_SOCK_NONBLOCK
else
AC_MSG_RESULT([no])
ac_cv_func_socket="no"
@ -2865,6 +2931,140 @@ AC_DEFUN([CARES_CHECK_FUNC_SOCKET], [
])
dnl CARES_CHECK_FUNC_SOCKET_SOCK_CLOEXEC
dnl -------------------------------------------------
dnl Verify if socket with type flag SOCK_CLOEXEC is
dnl available, can be compiled, and seems to work. If
dnl all of these are true, then HAVE_SOCKET_SOCK_CLOEXEC
dnl will be defined.
AC_DEFUN([CARES_CHECK_FUNC_SOCKET_SOCK_CLOEXEC], [
AC_REQUIRE([CARES_INCLUDES_WINSOCK2])dnl
AC_REQUIRE([CARES_INCLUDES_SYS_SOCKET])dnl
AC_REQUIRE([CARES_INCLUDES_SOCKET])dnl
#
tst_compi_socket_sock_cloexec="unknown"
tst_allow_socket_sock_cloexec="unknown"
#
case $host_os in
some_systems)
dnl socket SOCK_CLOEXEC does not work
cares_disallow_socket_sock_cloexec="yes"
;;
esac
#
if test "$ac_cv_func_socket" = "yes"; then
AC_MSG_CHECKING([if socket SOCK_CLOEXEC is compilable])
AC_COMPILE_IFELSE([
$cares_includes_winsock2
$cares_includes_sys_socket
$cares_includes_socket
]],[[
int flags = 0;
if(0 != socket(0, flags | SOCK_CLOEXEC, 0))
return 1;
]])
],[
AC_MSG_RESULT([yes])
tst_compi_socket_sock_cloexec="yes"
],[
AC_MSG_RESULT([no])
tst_compi_socket_sock_cloexec="no"
])
fi
#
if test "$tst_compi_socket_sock_cloexec" = "yes"; then
AC_MSG_CHECKING([if socket SOCK_CLOEXEC usage allowed])
if test "x$cares_disallow_socket_sock_cloexec" != "xyes"; then
AC_MSG_RESULT([yes])
tst_allow_socket_sock_cloexec="yes"
else
AC_MSG_RESULT([no])
tst_allow_socket_sock_cloexec="no"
fi
fi
#
AC_MSG_CHECKING([if socket SOCK_CLOEXEC might be used])
if test "$tst_compi_socket_sock_cloexec" = "yes" &&
test "$tst_allow_socket_sock_cloexec" = "yes"; then
AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(HAVE_SOCKET_SOCK_CLOEXEC, 1,
[Define to 1 if you have a working socket SOCK_CLOEXEC function.])
ac_cv_func_socket_sock_cloexec="yes"
else
AC_MSG_RESULT([no])
ac_cv_func_socket_sock_cloexec="no"
fi
])
dnl CARES_CHECK_FUNC_SOCKET_SOCK_NONBLOCK
dnl -------------------------------------------------
dnl Verify if socket with type flag SOCK_NONBLOCK is
dnl available, can be compiled, and seems to work. If
dnl all of these are true, then HAVE_SOCKET_SOCK_NONBLOCK
dnl will be defined.
AC_DEFUN([CARES_CHECK_FUNC_SOCKET_SOCK_NONBLOCK], [
AC_REQUIRE([CARES_INCLUDES_WINSOCK2])dnl
AC_REQUIRE([CARES_INCLUDES_SYS_SOCKET])dnl
AC_REQUIRE([CARES_INCLUDES_SOCKET])dnl
#
tst_compi_socket_sock_nonblock="unknown"
tst_allow_socket_sock_nonblock="unknown"
#
case $host_os in
some_systems)
dnl socket SOCK_NONBLOCK does not work
cares_disallow_socket_sock_nonblock="yes"
;;
esac
#
if test "$ac_cv_func_socket" = "yes"; then
AC_MSG_CHECKING([if socket SOCK_NONBLOCK is compilable])
AC_COMPILE_IFELSE([
$cares_includes_winsock2
$cares_includes_sys_socket
$cares_includes_socket
]],[[
int flags = 0;
if(0 != socket(0, flags | SOCK_NONBLOCK, 0))
return 1;
]])
],[
AC_MSG_RESULT([yes])
tst_compi_socket_sock_nonblock="yes"
],[
AC_MSG_RESULT([no])
tst_compi_socket_sock_nonblock="no"
])
fi
#
if test "$tst_compi_socket_sock_nonblock" = "yes"; then
AC_MSG_CHECKING([if socket SOCK_NONBLOCK usage allowed])
if test "x$cares_disallow_socket_sock_nonblock" != "xyes"; then
AC_MSG_RESULT([yes])
tst_allow_socket_sock_nonblock="yes"
else
AC_MSG_RESULT([no])
tst_allow_socket_sock_nonblock="no"
fi
fi
#
AC_MSG_CHECKING([if socket SOCK_NONBLOCK might be used])
if test "$tst_compi_socket_sock_nonblock" = "yes" &&
test "$tst_allow_socket_sock_nonblock" = "yes"; then
AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(HAVE_SOCKET_SOCK_NONBLOCK, 1,
[Define to 1 if you have a working socket SOCK_NONBLOCK function.])
ac_cv_func_socket_sock_nonblock="yes"
else
AC_MSG_RESULT([no])
ac_cv_func_socket_sock_nonblock="no"
fi
])
dnl CARES_CHECK_FUNC_STRCASECMP
dnl -------------------------------------------------
dnl Verify if strcasecmp is available, prototyped, and

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