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https://github.com/curl/curl.git
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check for poll() as it is done for other functions
This commit is contained in:
Yang Tse
parent
9ddc7ad038
commit
debe0b561d
41
configure.ac
41
configure.ac
@ -2033,6 +2033,7 @@ CURL_CHECK_FUNC_IOCTL
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CURL_CHECK_FUNC_IOCTLSOCKET
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CURL_CHECK_FUNC_IOCTLSOCKET_CAMEL
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CURL_CHECK_FUNC_LOCALTIME_R
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CURL_CHECK_FUNC_POLL
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CURL_CHECK_FUNC_SETSOCKOPT
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CURL_CHECK_FUNC_SIGACTION
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CURL_CHECK_FUNC_SIGINTERRUPT
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@ -2078,7 +2079,6 @@ AC_CHECK_FUNCS([basename \
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inet_addr \
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perror \
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pipe \
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poll \
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setlocale \
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setmode \
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setrlimit \
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@ -2135,45 +2135,6 @@ if test "$ipv6" = "yes"; then
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CURL_CHECK_NI_WITHSCOPEID
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fi
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AC_MSG_CHECKING([if we are Mac OS X (to disable poll)])
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disable_poll=no
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case $host in
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*-*-darwin*)
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disable_poll="yes";
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;;
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*)
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;;
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esac
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AC_MSG_RESULT($disable_poll)
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if test "$disable_poll" = "no"; then
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dnl poll() might be badly emulated, as in Mac OS X 10.3 (and other BSDs?) and
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dnl to find out we make an extra check here!
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if test "$ac_cv_func_poll" = "yes"; then
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AC_MSG_CHECKING([if poll works with NULL inputs])
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AC_RUN_IFELSE([
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#ifdef HAVE_SYS_POLL_H
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#include <sys/poll.h>
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#elif defined(HAVE_POLL_H)
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#include <poll.h>
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#endif
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int main(void)
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{
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/* make this return 0 == timeout since there's nothing to read from */
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return poll((void *)0, 0, 10 /*ms*/);
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}
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],
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_POLL_FINE, 1, [If you have a fine poll]),
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AC_MSG_RESULT(no),
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AC_MSG_RESULT(cross-compiling assumes yes)
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AC_DEFINE(HAVE_POLL_FINE, 1, [If you have a fine poll])
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) dnl end of AC_RUN_IFELSE
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fi dnl poll() was found
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fi dnl poll()-check is not disabled
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dnl ************************************************************
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dnl enable non-blocking communications
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dnl
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@ -22,7 +22,7 @@
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#***************************************************************************
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# File version for 'aclocal' use. Keep it a single number.
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# serial 43
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# serial 45
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dnl CURL_INCLUDES_ARPA_INET
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@ -124,6 +124,30 @@ curl_includes_netdb="\
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])
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dnl CURL_INCLUDES_POLL
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dnl -------------------------------------------------
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dnl Set up variable with list of headers that must be
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dnl included when poll.h is to be included.
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AC_DEFUN([CURL_INCLUDES_POLL], [
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curl_includes_poll="\
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/* includes start */
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_POLL_H
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# include <poll.h>
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#endif
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#ifdef HAVE_SYS_POLL_H
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# include <sys/poll.h>
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#endif
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/* includes end */"
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AC_CHECK_HEADERS(
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sys/types.h poll.h sys/poll.h,
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[], [], [$curl_includes_poll])
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])
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dnl CURL_INCLUDES_SETJMP
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dnl -------------------------------------------------
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dnl Set up variable with list of headers that must be
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@ -3108,6 +3132,132 @@ AC_DEFUN([CURL_CHECK_FUNC_LOCALTIME_R], [
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])
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dnl CURL_CHECK_FUNC_POLL
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dnl -------------------------------------------------
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dnl Verify if poll is available, prototyped, can
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dnl be compiled and seems to work. If all of these are
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dnl true, and usage has not been previously disallowed
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dnl with shell variable curl_disallow_poll, then
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dnl HAVE_POLL will be defined.
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AC_DEFUN([CURL_CHECK_FUNC_POLL], [
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AC_REQUIRE([CURL_INCLUDES_STDLIB])dnl
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AC_REQUIRE([CURL_INCLUDES_POLL])dnl
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#
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tst_links_poll="unknown"
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tst_proto_poll="unknown"
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tst_compi_poll="unknown"
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tst_works_poll="unknown"
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tst_allow_poll="unknown"
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#
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case $host_os in
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darwin*)
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dnl poll does not work on this platform
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curl_disallow_poll="yes"
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;;
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esac
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#
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AC_MSG_CHECKING([if poll can be linked])
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AC_LINK_IFELSE([
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AC_LANG_PROGRAM([[
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$curl_includes_poll
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]],[[
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if(0 != poll(0, 0, 0))
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return 1;
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]])
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],[
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AC_MSG_RESULT([yes])
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tst_links_poll="yes"
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],[
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AC_MSG_RESULT([no])
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tst_links_poll="no"
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])
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#
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if test "$tst_links_poll" = "yes"; then
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AC_MSG_CHECKING([if poll is prototyped])
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AC_EGREP_CPP([poll],[
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$curl_includes_poll
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],[
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AC_MSG_RESULT([yes])
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tst_proto_poll="yes"
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],[
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AC_MSG_RESULT([no])
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tst_proto_poll="no"
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])
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fi
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#
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if test "$tst_proto_poll" = "yes"; then
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AC_MSG_CHECKING([if poll is compilable])
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AC_COMPILE_IFELSE([
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AC_LANG_PROGRAM([[
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$curl_includes_poll
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]],[[
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if(0 != poll(0, 0, 0))
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return 1;
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]])
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],[
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AC_MSG_RESULT([yes])
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tst_compi_poll="yes"
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],[
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AC_MSG_RESULT([no])
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tst_compi_poll="no"
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])
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fi
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#
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dnl only do runtime verification when not cross-compiling
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if test "x$cross_compiling" != "xyes" &&
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test "$tst_compi_poll" = "yes"; then
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AC_MSG_CHECKING([if poll seems to work])
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AC_RUN_IFELSE([
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AC_LANG_PROGRAM([[
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$curl_includes_stdlib
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$curl_includes_poll
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]],[[
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if(0 != poll(0, 0, 10))
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exit(1); /* fail */
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else
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exit(0);
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]])
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],[
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AC_MSG_RESULT([yes])
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tst_works_poll="yes"
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],[
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AC_MSG_RESULT([no])
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tst_works_poll="no"
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])
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fi
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#
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if test "$tst_compi_poll" = "yes" &&
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test "$tst_works_poll" != "no"; then
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AC_MSG_CHECKING([if poll usage allowed])
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if test "x$curl_disallow_poll" != "xyes"; then
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AC_MSG_RESULT([yes])
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tst_allow_poll="yes"
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else
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AC_MSG_RESULT([no])
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tst_allow_poll="no"
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fi
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fi
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#
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AC_MSG_CHECKING([if poll might be used])
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if test "$tst_links_poll" = "yes" &&
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test "$tst_proto_poll" = "yes" &&
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test "$tst_compi_poll" = "yes" &&
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test "$tst_allow_poll" = "yes" &&
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test "$tst_works_poll" != "no"; then
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AC_MSG_RESULT([yes])
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AC_DEFINE_UNQUOTED(HAVE_POLL, 1,
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[Define to 1 if you have a working poll function.])
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AC_DEFINE_UNQUOTED(HAVE_POLL_FINE, 1,
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[If you have a fine poll])
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ac_cv_func_poll="yes"
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else
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AC_MSG_RESULT([no])
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ac_cv_func_poll="no"
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fi
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])
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dnl CURL_CHECK_FUNC_SETSOCKOPT
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dnl -------------------------------------------------
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dnl Verify if setsockopt is available, prototyped, and
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