70 lines
2.6 KiB
Text
70 lines
2.6 KiB
Text
# serial 20
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# Configure fcntl.h.
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dnl Copyright (C) 2006-2007, 2009-2023 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 Paul Eggert.
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AC_DEFUN_ONCE([gl_FCNTL_H],
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[
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AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
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AC_REQUIRE([gl_FCNTL_O_FLAGS])
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gl_NEXT_HEADERS([fcntl.h])
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dnl Ensure the type pid_t gets defined.
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AC_REQUIRE([AC_TYPE_PID_T])
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dnl Ensure the type mode_t gets defined.
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AC_REQUIRE([AC_TYPE_MODE_T])
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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, if it is not common
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dnl enough to be declared everywhere.
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gl_WARN_ON_USE_PREPARE([[#include <fcntl.h>
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]], [fcntl openat])
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])
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# gl_FCNTL_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_FCNTL_MODULE_INDICATOR],
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[
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dnl Ensure to expand the default settings once only.
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gl_FCNTL_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_FCNTL_H_REQUIRE_DEFAULTS],
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[
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m4_defun(GL_MODULE_INDICATOR_PREFIX[_FCNTL_H_MODULE_INDICATOR_DEFAULTS], [
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CREAT])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCNTL])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_NONBLOCKING])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OPEN])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OPENAT])
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dnl Support Microsoft deprecated alias function names by default.
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CREAT], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_OPEN], [1])
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])
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m4_require(GL_MODULE_INDICATOR_PREFIX[_FCNTL_H_MODULE_INDICATOR_DEFAULTS])
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AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
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])
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AC_DEFUN([gl_FCNTL_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_FCNTL=1; AC_SUBST([HAVE_FCNTL])
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HAVE_OPENAT=1; AC_SUBST([HAVE_OPENAT])
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REPLACE_CREAT=0; AC_SUBST([REPLACE_CREAT])
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REPLACE_FCNTL=0; AC_SUBST([REPLACE_FCNTL])
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REPLACE_OPEN=0; AC_SUBST([REPLACE_OPEN])
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REPLACE_OPENAT=0; AC_SUBST([REPLACE_OPENAT])
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])
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