gcc 3.3.1-3, loading .la files from gcj-compiled apps

["Marcus G. Daniels" <mgd at santafe dot edu>]

Would it be possible to add a -D_WIN32 to the libjava/libltdl Makefile 
for Cygwin?  Then the LoadLibrary support will get compiled-in, and 
dynamic libraries can be loaded into GCJ apps.  If this is done, then a 
__CYGWIN__ conditional is needed in ltdl.c in order to first normalize 
the path for Windows, e.g. here's how I hacked it in my copy (not 
intended as a patch, just for illustration).   Also, I found I had to 
duplicate the stack copy of `buf' in java::lang::Runtime:_load in order 
to avoid it getting wiped out from the the exception getting caught.  
Please see the second illustrative patch.  With these two changes, I can 
use LoadLibrary in GCJ-compiled apps with libtool dynamic libraries in 
the same way that Sun JDK can load ordinary DLLs.

*** ltdl.c-orig    Sun Nov  2 11:12:58 2003
--- ltdl.c    Sun Nov  2 11:13:23 2003
***************
*** 479,486 ****
         strcpy(searchname, filename);
         strcat(searchname, ".");
     }
!
!     module = LoadLibrary(searchname);
     lt_dlfree(searchname);
    
     /* libltdl expects this function to fail if it is unable
--- 479,490 ----
         strcpy(searchname, filename);
         strcat(searchname, ".");
     }
!         {
!            char buf[1024];
!           
!            cygwin_conv_to_win32_path (searchname, buf);
!        module = LoadLibrary(buf);
!         }
     lt_dlfree(searchname);
    
     /* libltdl expects this function to fail if it is unable


*** natRuntime.cc-orig    Sun Nov  2 08:58:56 2003
--- natRuntime.cc    Sun Nov  2 11:59:29 2003
***************
*** 174,180 ****
   jsize total = JvGetStringUTFRegion (path, 0, path->length(), 
&buf[offset]);
   buf[offset + total] = '\0';

!   char *lib_name = buf;

   if (do_search)
     {
--- 174,180 ----
   jsize total = JvGetStringUTFRegion (path, 0, path->length(), 
&buf[offset]);
   buf[offset + total] = '\0';

!   char *lib_name = strdup (buf);

   if (do_search)
     {


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