ipcmon error

Carsten Weinhold weinhold at os.inf.tu-dresden.de
Thu Sep 13 13:44:23 CEST 2007

Am Donnerstag September 13 2007 schrieb Bjoern Doebel:
> Hi,

Hello Davide!

> > [...] What's the problem?
> Ubuntu. :)
> According to our experience and Google
> (https://launchpad.net/ubuntu/+source/iptables/+bug/66681), this can be
> solved using the -fno-stack-protector option in CFLAGS and CXXFLAGS.
> However, our build system already sets this variable for you. Can you
> please perform "make cleanall && make V=1" in l4/pkg/ipcmon/server/src, and
> check if the output contains the -fno-stack-protector option?

Unfortunately, this will not be sufficient. The problem is that the 
libsupc++.a shipping with Ubuntu's GCC-4.1 compiler has the stack-protector 
feature enabled and hence is not affected by compiler flags for the L4 
packages. The attached patch is a work around for this problem. Another 
option would be to compile your L4 tree with GCC 3.4.6.


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