Does 'ar' work with native MS Windows libs?
Coatimundi
coatimundi@cox.net
Wed Oct 4 03:11:00 GMT 2006
Williams, Gerald S (Jerry) wrote:
> Coatimundi wrote:
>> If paths are included in the archive (which is typical for
>> libs created by Visual Studio), then ar may in some cases
>> claim that members (displayed with 'ar t') do not exist
>> when doing "ar x lib.a {object}" either by path/name.obj
>> or just name.obj.
>
> I think you need to use the -P option:
>
> $ ar t foobar.lib
> release\foo.obj
> release\bar.obj
> $ ar xv foobar.lib 'release\foo.obj'
> no entry release\foo.obj in archive
> $ ar xvP foobar.lib 'release\foo.obj'
> x - release\foo.obj
>
> gsw
>
Thank you for bringing this up. I forgot to mention (a sure sign that
my multitasking scaling is rolling over) that I also tried the P option.
While this usually works, I found cases where it did not.
Interestingly, these cases corresponded to libs compiled with debugging
information, which are precisely the libs for which 'ar t' returns some
(about 25%) but not all of the member names. I know the expected
members are there, because (1) 'ar x' (with no member specified) does in
fact extract all of the members and (2) I can link against them. Very
strange to my simple mind.
I see nothing wrong with the source for 'ar' so I suspect that there is
something not quite right about my lib (which was built with MS's
LIB.EXE) with debugging info. Since I see nothing wrong with the source
and I am short on time, I am going to chalk this up to an unidentified
mistake on my part, unless I see it again and have time to build
bintools myself and step through the code in debug.
The good news is I have not seen any problem with non-debug-info libs,
which is sufficient for my purposes.
Thanks for your good suggestion. And thanks to the Cygwin team for
porting an incredibly useful set of tools!
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/
More information about the Cygwin
mailing list