117 lines
3.6 KiB
Plaintext
117 lines
3.6 KiB
Plaintext
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dnl ---------------------------------------------------------------------------
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dnl
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dnl Copyright 2006-2009,2010 by Thomas E. Dickey
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dnl
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dnl All Rights Reserved
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dnl
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dnl Permission to use, copy, modify, and distribute this software and its
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dnl documentation for any purpose and without fee is hereby granted,
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dnl provided that the above copyright notice appear in all copies and that
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dnl both that copyright notice and this permission notice appear in
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dnl supporting documentation, and that the name of the above listed
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dnl copyright holder(s) not be used in advertising or publicity pertaining
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dnl to distribution of the software without specific, written prior
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dnl permission.
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dnl
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dnl THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD
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dnl TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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dnl AND FITNESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE
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dnl LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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dnl WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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dnl ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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dnl OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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dnl
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dnl ---------------------------------------------------------------------------
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dnl ---------------------------------------------------------------------------
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dnl CF_FUNC_POLL version: 4 updated: 2006/12/16 12:33:30
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dnl ------------
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dnl See if the poll function really works. Some platforms have poll(), but
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dnl it does not work for terminals or files.
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AC_DEFUN([CF_FUNC_POLL],[
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AC_CACHE_CHECK(if poll really works,cf_cv_working_poll,[
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AC_TRY_RUN([
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#include <stdio.h>
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#ifdef HAVE_POLL_H
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#include <poll.h>
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#else
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#include <sys/poll.h>
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#endif
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int main() {
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struct pollfd myfds;
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int ret;
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myfds.fd = 0;
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myfds.events = POLLIN;
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ret = poll(&myfds, 1, 100);
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${cf_cv_main_return:-return}(ret != 0);
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}],
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[cf_cv_working_poll=yes],
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[cf_cv_working_poll=no],
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[cf_cv_working_poll=unknown])])
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test "$cf_cv_working_poll" = "yes" && AC_DEFINE(HAVE_WORKING_POLL, 1, [poll() works])
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])dnl
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dnl ---------------------------------------------------------------------------
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dnl CF_SIGWINCH version: 1 updated: 2006/04/02 16:41:09
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dnl -----------
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dnl Use this macro after CF_XOPEN_SOURCE, but do not require it (not all
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dnl programs need this test).
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dnl
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dnl This is really a MacOS X 10.4.3 workaround. Defining _POSIX_C_SOURCE
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dnl forces SIGWINCH to be undefined (breaks xterm, ncurses). Oddly, the struct
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dnl winsize declaration is left alone - we may revisit this if Apple choose to
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dnl break that part of the interface as well.
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AC_DEFUN([CF_SIGWINCH],
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[
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AC_CACHE_CHECK(if SIGWINCH is defined,cf_cv_define_sigwinch,[
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AC_TRY_COMPILE([
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#include <sys/types.h>
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#include <sys/signal.h>
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],[int x = SIGWINCH],
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[cf_cv_define_sigwinch=yes],
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[AC_TRY_COMPILE([
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#undef _XOPEN_SOURCE
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#undef _POSIX_SOURCE
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#undef _POSIX_C_SOURCE
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#include <sys/types.h>
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#include <sys/signal.h>
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],[int x = SIGWINCH],
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[cf_cv_define_sigwinch=maybe],
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[cf_cv_define_sigwinch=no])
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])
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])
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if test "$cf_cv_define_sigwinch" = maybe ; then
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AC_CACHE_CHECK(for actual SIGWINCH definition,cf_cv_fixup_sigwinch,[
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cf_cv_fixup_sigwinch=unknown
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cf_sigwinch=32
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while test $cf_sigwinch != 1
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do
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AC_TRY_COMPILE([
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#undef _XOPEN_SOURCE
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#undef _POSIX_SOURCE
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#undef _POSIX_C_SOURCE
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#include <sys/types.h>
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#include <sys/signal.h>
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],[
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#if SIGWINCH != $cf_sigwinch
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make an error
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#endif
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int x = SIGWINCH],
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[cf_cv_fixup_sigwinch=$cf_sigwinch
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break])
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cf_sigwinch=`expr $cf_sigwinch - 1`
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done
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])
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if test "$cf_cv_fixup_sigwinch" != unknown ; then
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CPPFLAGS="$CPPFLAGS -DSIGWINCH=$cf_cv_fixup_sigwinch"
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fi
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fi
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])dnl
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