Re: Confusing libtool behaviour on cygwin

[Bob Friesenhahn]

On Tue, 14 Sep 2004, Maarten Boekhold wrote:

> Hi all,
>
> I'm a little confused about how libtool (or maybe it's automake) behaves when 
> used as 'libtool --mode=install' for a shared library *under cygwin*.
>
> I am in the process of porting XFCE (http://www.xfce.org) to cygwin/X. XFCE 
> has various subpackages, and a number of them use a plugin mechanism, where 
> plugins are loaded with g_module_open() and friends.
>
> The Makefile.am's for these plugins are all more or less the same. Yet, some 
> plugins get installed as '$(libdir)/bin/cygXXXXX.dll', some as 
> '$(libdir)/modules/cygXXXXX.dll', and others as 
> '$(libdir)/modules/libXXXX.dll'. And I just can't figure out what's causing 
> this.
>
> Does anybody know about this, have some pointer on how to get these shared 
> libraries all installed in the same place (preferrably as 
> $(libdir)/modules/libXXXX.dll)? Any pointer on how to investigate this?

My understanding is that for non-module DLLs, the .dll file is 
installed in the bin directory so it is likely to be in the user's 
path.  If the DLL is not in the PATH (or current directory) then it 
won't be found by Windows.  For module DLLs, libltdl takes care of 
loading requirements so the .la and .dll files are adjacent to each 
other in the modules install directory.  I do not know why some module 
DLLs start with 'cyg' while others start with 'lib'.  Is the same 
version of libtool used to build all the modules?

Bob
======================================
Bob Friesenhahn
address@hidden
http://www.simplesystems.org/users/bfriesen