view m4/opendir.m4 @ 16768:cd4aba7fcd3e

New module 'ilogbl'. * lib/math.in.h (ilogbl): New declaration. * lib/ilogbl.c: New file. * m4/ilogbl.m4: New file. * m4/math_h.m4 (gl_MATH_H): Test whether ilogbl is declared. (gl_MATH_H_DEFAULTS): Initialize GNULIB_ILOGBL, HAVE_ILOGBL. * modules/math (Makefile.am): Substitute GNULIB_ILOGBL, HAVE_ILOGBL. Split sed invocation, to avoid the limit of 100 substitutions of HP-UX 'sed'. * modules/ilogbl: New file. * tests/test-math-c++.cc: Check the declaration of ilogbl. * doc/posix-functions/ilogbl.texi: Mention the new module.
author Bruno Haible <bruno@clisp.org>
date Tue, 03 Apr 2012 21:58:52 +0200
parents 8250f2777afc
children e542fd46ad6f
line wrap: on
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# opendir.m4 serial 2
dnl Copyright (C) 2011-2012 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

AC_DEFUN([gl_FUNC_OPENDIR],
[
  AC_REQUIRE([gl_DIRENT_H_DEFAULTS])

  AC_CHECK_FUNCS([opendir])
  if test $ac_cv_func_opendir = no; then
    HAVE_OPENDIR=0
  fi
  dnl Replace opendir() for supporting the gnulib-defined fchdir() function,
  dnl to keep fchdir's bookkeeping up-to-date.
  m4_ifdef([gl_FUNC_FCHDIR], [
    gl_TEST_FCHDIR
    if test $HAVE_FCHDIR = 0; then
      if test $HAVE_OPENDIR = 1; then
        REPLACE_OPENDIR=1
      fi
    fi
  ])
])