Re: objc compiler not detected

[Wolfgang Lux]

Riccardo Mottola wrote:

> Do you think this simple test in gdb is enough?
> 
> (gdb) b __objc_exec_class
> Breakpoint 1 at 0x80485d0
> (gdb) r
> Starting program: 
> /home/multix/gnustep-cvs/devmodules/core/base/config/conftest
> objc runtime: cannot find class Test
> 
> Program received signal SIGABRT, Aborted.
> [Switching to LWP 1]
> 0xbbb37c17 in _lwp_kill () from /usr/lib/libc.so.12
> 
> 
> It means that I never get into that.

So there is a problem here. On NetBSD 6.1.2, the compiler implicitly generates 
a function __objc_gnu_init in the object file for config.objc.m that calls 
__objc_exec for all classes defined in the source file (i.e., Test in this test 
program). This function is recorded in the constructor section of the object 
file and hence should be executed before the main function.

If this doesn't happen in current, then either the compiler does not generate 
the __objc_gnu_init function or does not mark it as a constructor, or the 
runtime linker on NetBSD does not execute constructor sections before the main 
function (which it should). For reference, I have attached the assembler file 
produced for config.objc on NetBSD 6.1.2. So might want to compare this with 
the file generated on current or just use this file instead of the one produced 
on current to link the config.objc executable and see if that works.

Wolfgang

config.objc.s
Description: Binary data