diff options
Diffstat (limited to 'ares/m4/cares-confopts.m4')
-rw-r--r-- | ares/m4/cares-confopts.m4 | 74 |
1 files changed, 73 insertions, 1 deletions
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 +]) + |