better select() function detection that works
even when cross compiling a Windows target.
This commit is contained in:
Yang Tse
parent
8fc2f8ef62
commit
9346e55d5a
198
acinclude.m4
198
acinclude.m4
@ -1978,6 +1978,204 @@ AC_DEFUN([CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC], [
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#
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]) dnl AC_DEFUN
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dnl CURL_CHECK_FUNC_SELECT
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dnl -------------------------------------------------
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dnl Test if the socket select() function is available,
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dnl and check its return type and the types of its
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dnl arguments. If the function succeeds HAVE_SELECT
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dnl will be defined, defining the types of the
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dnl arguments in SELECT_TYPE_ARG1, SELECT_TYPE_ARG234
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dnl and SELECT_TYPE_ARG5, defining the type of the
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dnl function return value in SELECT_TYPE_RETV, and
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dnl also defining the type qualifier of fifth argument
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dnl in SELECT_QUAL_ARG5.
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AC_DEFUN([CURL_CHECK_FUNC_SELECT], [
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AC_REQUIRE([CURL_CHECK_STRUCT_TIMEVAL])dnl
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AC_CHECK_HEADERS(sys/select.h sys/socket.h)
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#
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AC_MSG_CHECKING([for select])
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AC_TRY_LINK([
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#undef inline
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#ifdef HAVE_WINDOWS_H
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#endif
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#include <windows.h>
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#ifdef HAVE_WINSOCK2_H
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#include <winsock2.h>
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#else
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#ifdef HAVE_WINSOCK_H
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#include <winsock.h>
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#endif
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#endif
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#endif
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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_SYS_TIME_H
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#include <sys/time.h>
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#ifdef TIME_WITH_SYS_TIME
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#include <time.h>
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#endif
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#else
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#ifdef HAVE_TIME_H
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#include <time.h>
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#endif
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#endif
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#ifndef HAVE_WINDOWS_H
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#endif
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],[
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select(0, 0, 0, 0, 0);
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],[
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AC_MSG_RESULT([yes])
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curl_cv_select="yes"
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],[
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AC_MSG_RESULT([no])
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curl_cv_select="no"
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])
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#
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if test "$curl_cv_select" = "yes"; then
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AC_CACHE_CHECK([types of args and return type for select],
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[curl_cv_func_select_args], [
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curl_cv_func_select_args="unknown"
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for sel_retv in 'int' 'ssize_t'; do
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for sel_arg1 in 'int' 'ssize_t' 'size_t' 'unsigned long int' 'unsigned int'; do
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for sel_arg234 in 'fd_set *' 'int *' 'void *'; do
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for sel_arg5 in 'struct timeval *' 'const struct timeval *'; do
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AC_COMPILE_IFELSE([
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AC_LANG_PROGRAM([
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#undef inline
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#ifdef HAVE_WINDOWS_H
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#endif
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#include <windows.h>
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#ifdef HAVE_WINSOCK2_H
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#include <winsock2.h>
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#else
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#ifdef HAVE_WINSOCK_H
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#include <winsock.h>
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#endif
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#endif
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#define SELECTCALLCONV PASCAL
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#endif
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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_SYS_TIME_H
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#include <sys/time.h>
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#ifdef TIME_WITH_SYS_TIME
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#include <time.h>
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#endif
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#else
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#ifdef HAVE_TIME_H
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#include <time.h>
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#endif
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#endif
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#ifndef HAVE_WINDOWS_H
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#define SELECTCALLCONV
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#endif
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#ifndef HAVE_STRUCT_TIMEVAL
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struct timeval {
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long tv_sec;
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long tv_usec;
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};
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#endif
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extern $sel_retv SELECTCALLCONV select($sel_arg1,
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$sel_arg234,
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$sel_arg234,
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$sel_arg234,
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$sel_arg5);
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],[
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$sel_arg1 nfds=0;
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$sel_arg234 rfds=0;
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$sel_arg234 wfds=0;
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$sel_arg234 efds=0;
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$sel_retv res = select(nfds, rfds, wfds, efds, 0);
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])
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],[
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curl_cv_func_select_args="$sel_arg1,$sel_arg234,$sel_arg5,$sel_retv"
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break 4
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])
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done
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done
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done
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done
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]) # AC_CACHE_CHECK
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if test "$curl_cv_func_select_args" = "unknown"; then
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AC_MSG_WARN([Cannot find proper types to use for select args])
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AC_MSG_WARN([HAVE_SELECT will not be defined])
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else
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select_prev_IFS=$IFS; IFS=','
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set dummy `echo "$curl_cv_func_select_args" | sed 's/\*/\*/g'`
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IFS=$select_prev_IFS
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shift
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#
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sel_qual_type_arg5=$[3]
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#
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AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG1, $[1],
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[Define to the type of arg 1 for select.])
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AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG234, $[2],
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[Define to the type of args 2, 3 and 4 for select.])
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AC_DEFINE_UNQUOTED(SELECT_TYPE_RETV, $[4],
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[Define to the function return type for select.])
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#
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prev_sh_opts=$-
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#
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case $prev_sh_opts in
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*f*)
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;;
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*)
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set -f
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;;
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esac
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#
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case "$sel_qual_type_arg5" in
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const*)
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sel_qual_arg5=const
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sel_type_arg5=`echo $sel_qual_type_arg5 | sed 's/^const //'`
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;;
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*)
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sel_qual_arg5=
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sel_type_arg5=$sel_qual_type_arg5
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;;
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esac
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#
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AC_DEFINE_UNQUOTED(SELECT_QUAL_ARG5, $sel_qual_arg5,
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[Define to the type qualifier of arg 5 for select.])
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AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG5, $sel_type_arg5,
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[Define to the type of arg 5 for select.])
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#
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case $prev_sh_opts in
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*f*)
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;;
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*)
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set +f
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;;
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esac
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#
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AC_DEFINE_UNQUOTED(HAVE_SELECT, 1,
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[Define to 1 if you have the select function.])
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ac_cv_func_select="yes"
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fi
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fi
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]) # AC_DEFUN
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dnl ************************************************************
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dnl check for "localhost", if it doesn't exist, we can't do the
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dnl gethostbyname_r tests!
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34
configure.ac
34
configure.ac
@ -1992,7 +1992,7 @@ TYPE_SIG_ATOMIC_T
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AC_TYPE_SIGNAL
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AC_FUNC_SELECT_ARGTYPES
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CURL_CHECK_FUNC_SELECT
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CURL_CHECK_FUNC_RECV
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@ -2013,7 +2013,6 @@ case $host in
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esac
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AC_CHECK_FUNCS( strtoll \
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socket \
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select \
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strdup \
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strstr \
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strcasestr \
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@ -2067,37 +2066,6 @@ if test "x$skipcheck" != "xyes"; then
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fi
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)
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dnl For some reason, the check above doesn't properly detect select() with
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dnl Msys/Mingw
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if test "$ac_cv_func_select" = "no"; then
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AC_MSG_CHECKING([for select in $winsock_LIB])
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AC_TRY_LINK([
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#undef inline
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#ifdef HAVE_WINDOWS_H
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#endif
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#include <windows.h>
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#ifdef HAVE_WINSOCK2_H
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#include <winsock2.h>
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#else
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#ifdef HAVE_WINSOCK_H
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#include <winsock.h>
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#endif
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#endif
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#endif
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],[
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select(0,(fd_set *)NULL,(fd_set *)NULL,(fd_set *)NULL,(struct timeval *)NULL);
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],[
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AC_MSG_RESULT([yes])
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HAVE_SELECT="1"
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AC_DEFINE_UNQUOTED(HAVE_SELECT, 1,
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[Define to 1 if you have the select function.])
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],[
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AC_MSG_ERROR([You can't compile without a select])
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])
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fi
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dnl sigsetjmp() might be a macro and no function so if it isn't found already
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dnl we make an extra check here!
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if test "$ac_cv_func_sigsetjmp" != "yes"; then
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