diff options
Diffstat (limited to 'ares/m4/cares-functions.m4')
| -rw-r--r-- | ares/m4/cares-functions.m4 | 786 |
1 files changed, 785 insertions, 1 deletions
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 |