Re: Detecting availability of a shared libray

[Sander Niemeijer]

Hi,

Thank you for your response. I was actually already afraid that it 
involved creating my own macro to do the testing. But indeed, using 
libtool to do the testing (it is indeed possible for me to postpone the 
shared library test after the libtool script is generated) should make 
my life at least a lot easier.

If I can device a clean macro I'll post it back to the list.

Regards,
Sander

On donderdag, sep 18, 2003, at 15:55 Europe/Amsterdam, Boehne, Robert 
wrote:

> Sander,
>
> If you can ensure this check is done after the libtool script is 
> created,
> you may be able to write a macro similar to AC_CHECK_LIB that uses a
> shared library rather than an executable.  If it won't link, you can
> assume that there isn't a shared version of the dependent library.
> If this test fails, but AC_CHECK_LIB doesn't, then you only have a
> static lib.
>
> HTH,
>
> Robert
>
> -----Original Message-----
> From: Sander Niemeijer [mailto:address@hidden
> Sent: Thursday, September 18, 2003 3:53 AM
> To: address@hidden; address@hidden
> Subject: Re: Detecting availability of a shared libray
>
>
> Is there really nobody who can help me further with this?
>
> Regards,
> Sander
>
> On vrijdag, sep 5, 2003, at 17:25 Europe/Amsterdam, Sander Niemeijer
> wrote:
>
> > Hi all,
> >
> > I have a package that produces a shared/static library via libtool.
> > However this package needs to make use of some external library for
> > data import/export. Since my library has both a shared and a static
> > version this external library also needs to have at least a shared
> > version available. If this is the case then linking my library with
> > libtool and the appropriate -L and -l flags will work nicely. However,
> > if only a static version of the external library is available then
> > building a shared version of my library will fail (except perhaps on
> > systems that do not need specific PIC flags when creating shared
> > library object files).
> >
> > My problem is that if I use AC_CHECK_LIB to check for the external
> > library, then the check that is being performed is to see whether the
> > external library can be linked into a program. Now this works of
> > course fine if the external library is only available as a static
> > version. So my question now is, does anybody know whether there is a
> > way to explicitly test for the availability of the shared version of
> > the external library?
> >
> > Regards,
> > Sander Niemeijer
>
>
>
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