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aeb22f4861
This is a followup to edfca3b7e5, which
added the 'posix_spawnp' module but not 'posix_spawn'.
* m4/gnulib-cache.m4: Add 'posix_spawn' module.
* gnulib-local/m4/clock_time.m4.diff: Adjust.
* configure.ac: Move 'gl_EARLY' use right after 'AC_PROG_CC'.
64 lines
2.1 KiB
Text
64 lines
2.1 KiB
Text
# poll_h.m4 serial 6
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dnl Copyright (C) 2010-2023 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_ONCE([gl_POLL_H],
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[
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dnl Ensure to expand the default settings once only, before all statements
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dnl 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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# gl_POLL_MODULE_INDICATOR([modulename])
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# sets the shell variable that indicates the presence of the given module
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# to a C preprocessor expression that will evaluate to 1.
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# This macro invocation must not occur in macros that are AC_REQUIREd.
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AC_DEFUN([gl_POLL_MODULE_INDICATOR],
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[
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dnl Ensure to expand the default settings once only.
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gl_POLL_H_REQUIRE_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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# Initializes the default values for AC_SUBSTed shell variables.
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# This macro must not be AC_REQUIREd. It must only be invoked, and only
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# outside of macros or in macros that are not AC_REQUIREd.
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AC_DEFUN([gl_POLL_H_REQUIRE_DEFAULTS],
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[
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m4_defun(GL_MODULE_INDICATOR_PREFIX[_POLL_H_MODULE_INDICATOR_DEFAULTS], [
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POLL])
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])
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m4_require(GL_MODULE_INDICATOR_PREFIX[_POLL_H_MODULE_INDICATOR_DEFAULTS])
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AC_REQUIRE([gl_POLL_H_DEFAULTS])
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])
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AC_DEFUN([gl_POLL_H_DEFAULTS],
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[
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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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