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49 lines
1.5 KiB
Text
49 lines
1.5 KiB
Text
# poll_h.m4 serial 3
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dnl Copyright (C) 2010-2021 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl Written by Bruno Haible.
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AC_DEFUN([gl_POLL_H],
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[
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dnl Use AC_REQUIRE here, so that the default behavior below is expanded
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dnl once only, before all statements that occur in other macros.
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AC_REQUIRE([gl_POLL_H_DEFAULTS])
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AC_CHECK_HEADERS_ONCE([poll.h])
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if test $ac_cv_header_poll_h = yes; then
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HAVE_POLL_H=1
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else
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HAVE_POLL_H=0
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fi
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AC_SUBST([HAVE_POLL_H])
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dnl <poll.h> is always overridden, because of GNULIB_POSIXCHECK.
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gl_CHECK_NEXT_HEADERS([poll.h])
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gl_PREREQ_SYS_H_WINSOCK2 dnl for HAVE_WINSOCK2_H
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dnl Check for declarations of anything we want to poison if the
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dnl corresponding gnulib module is not in use.
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gl_WARN_ON_USE_PREPARE([[#include <poll.h>]],
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[poll])
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])
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AC_DEFUN([gl_POLL_MODULE_INDICATOR],
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[
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dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
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AC_REQUIRE([gl_POLL_H_DEFAULTS])
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gl_MODULE_INDICATOR_SET_VARIABLE([$1])
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dnl Define it also as a C macro, for the benefit of the unit tests.
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gl_MODULE_INDICATOR_FOR_TESTS([$1])
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])
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AC_DEFUN([gl_POLL_H_DEFAULTS],
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[
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GNULIB_POLL=0; AC_SUBST([GNULIB_POLL])
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dnl Assume proper GNU behavior unless another module says otherwise.
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HAVE_POLL=1; AC_SUBST([HAVE_POLL])
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REPLACE_POLL=0; AC_SUBST([REPLACE_POLL])
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])
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