Dogcows Code - chaz/tar/blob - acinclude.m4

   1 dnl Special Autoconf macros for GNU Tar         -*- autoconf -*-
   2 dnl Copyright (C) 2009 Free Software Foundation, Inc.
   3 dnl
   4 dnl GNU tar is free software; you can redistribute it and/or modify
   5 dnl it under the terms of the GNU General Public License as published by
   6 dnl the Free Software Foundation; either version 3, or (at your option)
   7 dnl any later version.
   8 dnl
   9 dnl GNU tar is distributed in the hope that it will be useful,
  10 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 dnl GNU General Public License for more details.
  13 dnl
  14 dnl You should have received a copy of the GNU General Public License along
  15 dnl with GNU tar.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 AC_DEFUN([TAR_COMPR_PROGRAM],[
  18  m4_pushdef([tar_compr_define],translit($1,[a-z+-],[A-ZX_])[_PROGRAM])
  19  m4_pushdef([tar_compr_var],[tar_cv_compressor_]translit($1,[+-],[x_]))
  20  AC_ARG_WITH($1,
  21              AC_HELP_STRING([--with-]$1[=PROG],
  22                             [use PROG as ]$1[ compressor program]),
  23              [tar_compr_var=${withval}],
  24              [tar_compr_var=m4_if($2,,$1,$2)])
  25  AC_DEFINE_UNQUOTED(tar_compr_define, "$tar_compr_var",
  26                     [Define to the program name of ]$1[ compressor program])])
  27
  28 # Provide <attr/xattr.h>, if necessary
  29
  30 AC_DEFUN([TAR_HEADERS_ATTR_XATTR_H],
  31 [
  32   AC_ARG_WITH([xattrs],
  33     AS_HELP_STRING([--without-xattrs], [don't use linux extended attributes]),
  34     [], [with_xattrs=maybe]
  35   )
  36
  37   AC_CHECK_HEADERS([attr/xattr.h])
  38   AM_CONDITIONAL([TAR_COND_XATTR_H],[test "$ac_cv_header_attr_xattr_h" = yes])
  39   if test "$ac_cv_header_attr_xattr_h" = yes; then
  40     AC_CHECK_FUNCS(getxattr  fgetxattr  lgetxattr \
  41                    setxattr  fsetxattr  lsetxattr \
  42                    listxattr flistxattr llistxattr,
  43         # only when functions are present
  44         AC_DEFINE([HAVE_ATTR_XATTR_H], [1],
  45                     [define to 1 if we have <attr/xattr.h> header])
  46         if test "$with_xattrs" != no; then
  47           AC_DEFINE([HAVE_XATTRS],,[Define when we have working linux xattrs.])
  48         fi
  49     )
  50   fi
  51 ])
  52