> <>We blacklisted gcc 4 right now so it's not supported. This has 
> really nothing to do with KDE code. 

are You sure?

e.g some times ago we thought the gcc4 was buggy (konqs sigsegv issue).
finally there was a bug in konq's code:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19317#c32
so please don't blacklist 4.0.x tree. we should fix bugs.
blacklisting is like a hiding head in the sand.

i'll check this bug deeply in free time.
i think that some global-object-contructor causes sigsegv.
program enters into __do_global_ctor_aux and doesn't reach the main().

(gcc-4.0.1-20050507).

Regards,
Pawel.

[builder2@anduril kdelibs-3.4.0]$ gdb kdecore/kconfig_compiler/.libs/lt-kconfig_compiler
(...)
(gdb) set args dnssd/kcm_kdnssd.kcfg
(gdb) break main
Breakpoint 1 at 0x100085a8: file kconfig_compiler.cpp, line 777.
(gdb) break __do_global_ctors_aux
Breakpoint 2 at 0x10013c60
(gdb) r
Starting program: /home/users/builder2/rpm/BUILD/kdelibs-3.4.0/kdecore/
                   kconfig_compiler/.libs/lt-kconfig_compiler dnssd/kcm_kdnssd.kcfg
Breakpoint 2 at 0xffb2184
Breakpoint 2 at 0xfd34b98
Breakpoint 2 at 0xfbf36a8

Breakpoint 2, 0x0fbf36a8 in __do_global_ctors_aux ()
   from /home/users/builder2/rpm/BUILD/kdelibs-3.4.0/kdefx/.libs/libkdefx.so.4
(gdb) c
Continuing.

Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.