view m4/ffsll.m4 @ 16815:837ea4b31230

*alloc-gnu, eealloc: Avoid "guessing no" when cross-compiling to glibc. * m4/malloc.m4 (_AC_FUNC_MALLOC_IF): Override in autoconf < 2.70. * m4/realloc.m4 (_AC_FUNC_REALLOC_IF): Override in autoconf < 2.70. * m4/calloc.m4 (_AC_FUNC_CALLOC_IF): Require AC_CANONICAL_HOST. When cross-compiling, choose the first alternative on glibc systems. * modules/eealloc (Files): Add m4/malloc.m4, m4/realloc.m4.
author Bruno Haible <bruno@clisp.org>
date Fri, 04 May 2012 04:23:44 +0200
parents 8250f2777afc
children e542fd46ad6f
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# ffsll.m4 serial 1
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_FFSLL],
[
  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])

  dnl Persuade glibc <string.h> to declare ffsll().
  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])

  AC_CHECK_FUNCS_ONCE([ffsll])
  if test $ac_cv_func_ffsll = no; then
    HAVE_FFSLL=0
  fi
])