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ax_config_feature.m4
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ax_have_poll.m4
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libtool.m4
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ltoptions.m4
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ltsugar.m4
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ltversion.m4
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lt~obsolete.m4
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Editing: ax_have_poll.m4
# =========================================================================== # http://www.gnu.org/software/autoconf-archive/ax_have_poll.html # =========================================================================== # # SYNOPSIS # # AX_HAVE_POLL([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) # AX_HAVE_PPOLL([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) # # DESCRIPTION # # This macro determines whether the system supports the poll I/O event # interface. A neat usage example would be: # # AX_HAVE_POLL( # [AX_CONFIG_FEATURE_ENABLE(poll)], # [AX_CONFIG_FEATURE_DISABLE(poll)]) # AX_CONFIG_FEATURE( # [poll], [This platform supports poll(7)], # [HAVE_POLL], [This platform supports poll(7).]) # # Some systems -- most notably Linux kernel 2.6.16 and later -- also have # the variant ppoll(). The availability of that function can be tested # with the second macro. Generally speaking, it is safe to assume that # AX_HAVE_POLL would succeed if AX_HAVE_PPOLL has, but not the other way # round. # # LICENSE # # Copyright (c) 2009 Peter Simons <simons@cryp.to> # # Copying and distribution of this file, with or without modification, are # permitted in any medium without royalty provided the copyright notice # and this notice are preserved. This file is offered as-is, without any # warranty. #serial 7 AC_DEFUN([AX_HAVE_POLL], [dnl AC_MSG_CHECKING([for poll(2)]) AC_CACHE_VAL([ax_cv_have_poll], [dnl AC_LINK_IFELSE([dnl AC_LANG_PROGRAM( [#include <poll.h>], [int rc; rc = poll((struct pollfd *)(0), 0, 0);])], [ax_cv_have_poll=yes], [ax_cv_have_poll=no])]) AS_IF([test "${ax_cv_have_poll}" = "yes"], [AC_MSG_RESULT([yes]) $1],[AC_MSG_RESULT([no]) $2]) ])dnl AC_DEFUN([AX_HAVE_PPOLL], [dnl AC_MSG_CHECKING([for ppoll(2)]) AC_CACHE_VAL([ax_cv_have_ppoll], [dnl AC_LINK_IFELSE([dnl AC_LANG_PROGRAM( [dnl #include <poll.h> #include <signal.h>], [dnl int rc; rc = poll((struct pollfd *)(0), 0, 0); rc = ppoll((struct pollfd *)(0), 0, (struct timespec const *)(0), (sigset_t const *)(0));])], [ax_cv_have_ppoll=yes], [ax_cv_have_ppoll=no])]) AS_IF([test "${ax_cv_have_ppoll}" = "yes"], [AC_MSG_RESULT([yes]) $1],[AC_MSG_RESULT([no]) $2]) ])
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