Re: objc compiler not detected

[Riccardo Mottola]

Hi Wolfgang

Wolfgang Lux wrote:
> Riccardo Mottola wrote:
>
> > configure:13173: checking whether objc really works
> > configure:13203: gcc -o conftest -g -O2  -I/Local/Library/Headers 
> > -I/Local/Library/Headers -I/System/Library/Headers -I/usr/pkg/include  -fgnu-runtime 
> > -x objective-c -L/Local/Library/Libraries -L/Local/Library/Libraries 
> > -L/System/Library/Libraries -Wl,-R/usr/pkg/lib -L/usr/pkg/lib conftest.c -lrt  
> > -lpthread -rdynamic -Wl,-R/usr/pkg/lib -L/usr/pkg/lib -Wl,-R/usr/X11R6/lib 
> > -L/usr/X11R6/lib -shared-libgcc -pthread -fexceptions -fgnu-runtime 
> > -L/home/multix/GNUstep/Library/Libraries -L/Local/Library/Libraries 
> > -L/System/Library/Libraries -Wl,-R/usr/pkg/lib -L/usr/pkg/lib -lobjc -lm     >&5
> > In file included from ./config/config.objc.m:2:0,
> >                  from conftest.c:97:
> > ./config/objc-common.g:30:1: warning: cannot find interface declaration for 
> > 'NXConstantString'
> > configure:13207: $? = 0
> > configure:13213: ./conftest
> > objc runtime: cannot find class Test
> > Abort (core dumped)
> So this is the real problem. The compiler apparently produces an executable for 
> the source file, but when running it it doesn't find the Test class (which is 
> defined in config/config.objc.m). Not sure why this happens.
I tried building the test standalone I can reproduce the error (just 
building config.objc.m). The problem reproduces:

grid$ ./conftest
objc runtime: cannot find class Test
[1]   Abort trap (core dumped) ./conftest

the stacktrace doesn't reveal anything useful to my eyes:
#0  0xbbb37c17 in _lwp_kill () from /usr/lib/libc.so.12
#1  0xbbb37bb6 in raise () from /usr/lib/libc.so.12
#2  0xbbb371f7 in abort () from /usr/lib/libc.so.12
#3  0xbbbbdf93 in objc_verror () from /usr/lib/libobjc.so.3
#4  0xbbbbdfd2 in objc_error () from /usr/lib/libobjc.so.3
#5  0xbbbbd3a3 in objc_get_class () from /usr/lib/libobjc.so.3
#6  0x080489a5 in main () at config.objc.m:21

Did I manage to get a broken runtime? I hope not. I wonder what could be 
going bad here.

I reduced the compile line to:
gcc -o conftest -g -O2  -fgnu-runtime -x objective-c  config.objc.m 
-lrt  -lpthread -rdynamic -shared-libgcc -pthread -fexceptions 
-fgnu-runtime  -lobjc -lm

since we do not need all the headers and libraries anyway (and the 
compiler is much faster! wow!). However, same error :(

Riccardo