Re: Can't load backend on MinGW

[Germán Arias]

El vie, 13-02-2015 a las 13:19 -0600, Germán Arias escribió:
> El vie, 13-02-2015 a las 15:18 +0100, Fred Kiefer escribió:
> > Am 13.02.2015 um 07:29 schrieb Germán Arias:
> > > Now I have installed gnustep on latest MinGW. But can't load the backend
> > > (winlib or cairo) because the class NSBundle return NO at line 2049 in
> > > method +load. I'm using the libobjc library. Any idea what can cause
> > > this?
> > 
> > I haven't used GNUstep on MinGW for a long time. Could you please state
> > which Windows version you are on? And please provide the full error
> > messages you get in the shell window when starting a GNUstep application
> > with "--GNU-Debug=dflt" or "--GNU-Debug=BackendBundle". If you don't get
> > any output in the window, please also check your Windows event log.
> > 
> > Hope this helps,
> > Fred
> > 
> > 
> 
> Widows 7 32 bits on VirtualBox. With:
> 
> $ debugapp SystemPreferences --GNU-Debug=BackendBundle
> 
> I use debugapp, if not don't print anything. I get:
> 
> (gdb) run
> Starting program:
> C:/MinGW/msys/1.0/local/lib/GNUstep/Applications/SystemPrefere
> nces.app/SystemPreferences.exe "--GNU-Debug=BackendBundle"
> [New Thread 2632.0xa8c]
> [New Thread 2632.0xa80]
> warning: 2015-02-13 13:11:52.843 SystemPreferences[2632] File
> NSApplication.m: 1
> 88. In gnustep_backend_path Looking for GNUstep-back.framework
> 
> warning: 2015-02-13 13:11:52.973 SystemPreferences[2632] Did not find
> backend fr
> amework.
> 
> warning: 2015-02-13 13:11:53.053 SystemPreferences[2632] File
> NSApplication.m: 1
> 88. In gnustep_backend_path Looking for libgnustep-back-024.bundle
> 
> warning: 2015-02-13 13:11:53.134 SystemPreferences[2632] File
> NSApplication.m: 3
> 06. In initialize_gnustep_backend Loading Backend from
> C:/MinGW/msys/1.0/local/l
> ib/GNUstep/Bundles/libgnustep-back-024.bundle
> 
> warning: 2015-02-13 13:11:55.567 SystemPreferences[2632]
> NSApplication.m:317  As
> sertion failed in initialize_gnustep_backend.  Can't load object file
> from backe
> nd at path
> C:/MinGW/msys/1.0/local/lib/GNUstep/Bundles/libgnustep-back-024.bundl
> e
> 
> [Inferior 1 (process 2632) exited with code 01]
> (gdb)
> 
> Germán
> 

I add a breakpoint at line 180 in objc-load.m and I get this:

(gdb) run
Starting program:
C:/MinGW/msys/1.0/local/lib/GNUstep/Applications/SystemPrefere
nces.app/SystemPreferences.exe
[New Thread 3456.0x7b8]
[New Thread 3456.0xf00]

Breakpoint 1, GSPrivateLoadModule (address@hidden,
    errorStream=0x76362940 <msvcrt!_iob+64>,
    address@hidden <_bundle_load_callback>,
    address@hidden, address@hidden)
    at objc-load.m:180
180           _objc_load_callback = 0;
(gdb)

For some reason no handler is returned by __objc_dynamic_link().

Germán.