AC_DEFUN([TAR_COMPR_PROGRAM],[
m4_pushdef([tar_compr_define],translit($1,[a-z+-],[A-ZX_])[_PROGRAM])
m4_pushdef([tar_compr_var],[tar_cv_compressor_]translit($1,[+-],[x_]))
- AC_ARG_WITH([--with-]$1,
+ AC_ARG_WITH($1,
AC_HELP_STRING([--with-]$1[=PROG],
[use PROG as ]$1[ compressor program]),
- [tar_compr_var=${withvar}],
+ [tar_compr_var=${withval}],
[tar_compr_var=m4_if($2,,$1,$2)])
AC_DEFINE_UNQUOTED(tar_compr_define, "$tar_compr_var",
[Define to the program name of ]$1[ compressor program])])
+
+# Provide <attr/xattr.h>, if necessary
+
+AC_DEFUN([TAR_HEADERS_ATTR_XATTR_H],
+[
+ AC_ARG_WITH([xattrs],
+ AS_HELP_STRING([--without-xattrs], [don't use linux extended attributes]),
+ [], [with_xattrs=maybe]
+ )
+
+ AC_CHECK_HEADERS([attr/xattr.h])
+ AM_CONDITIONAL([TAR_COND_XATTR_H],[test "$ac_cv_header_attr_xattr_h" = yes])
+ if test "$ac_cv_header_attr_xattr_h" = yes; then
+ AC_CHECK_FUNCS(getxattr fgetxattr lgetxattr \
+ setxattr fsetxattr lsetxattr \
+ listxattr flistxattr llistxattr,
+ # only when functions are present
+ AC_DEFINE([HAVE_ATTR_XATTR_H], [1],
+ [define to 1 if we have <attr/xattr.h> header])
+ if test "$with_xattrs" != no; then
+ AC_DEFINE([HAVE_XATTRS],,[Define when we have working linux xattrs.])
+ fi
+ )
+ fi
+])
+
\ No newline at end of file