Re: [PATCH] Support AC_CONFIG_LIBOBJ_DIR

[Paul Eggert]

"Gary V. Vaughan" <address@hidden> writes:

>> ac_libobj_dir=
>> test "X${ac_config_libobj_dir-.}" != X. &&
>>   ac_libobj_dir=`expr "X$ac_config_libobj_dir/" : 'X\(.*[^/]\)' '|' 'X/' : 
>> 'X\(/\)'`
>
> I think that does something different.  The idea of my sed expression is
> just to avoid adding a trailing slash if configure.ac contains, say,
> AC_CONFIG_LIBOBJ_DIR([lib/]).

But that's what this patch does.  For example:

$ expr 'Xlib/' : 'X\(.*[^/]\)' '|' 'X/' : 'X\(/\)'
lib
$ expr 'Xlib//' : 'X\(.*[^/]\)' '|' 'X/' : 'X\(/\)'
lib
$ expr 'Xlib///' : 'X\(.*[^/]\)' '|' 'X/' : 'X\(/\)'
lib
$ expr 'Xabc\def/' : 'X\(.*[^/]\)' '|' 'X/' : 'X\(/\)'
abc\def

The advantage of expr is that it does the right thing even if
$ac_config_libobj_dir contains a backslash or other weird character.