Hi, Sorry if this has been reported before. When I try to compile cln (both 1.1.13 and 1.2.2) using gcc 4.1.2 with options -O2 and -ftracer, compilation fails. -- session log -- localhost # cd /var/tmp/portage/sci-libs/cln-1.1.13/work/cln-1.1.13/src localhost src # g++ -march=pentium4 -mtune=pentium4 -O2 -pipe -ftracer -I../include -I./base -c base/random cl_random_def.cc -o cl_random_def.o {standard input}: Assembler messages: {standard input}:65: Error: symbol `cl_module__cl_random_def__ctorend' is already defined ---- This was reported on Gentoo bug tracker: http://bugs.gentoo.org/show_bug.cgi?id=237451 I found a post that might describe a similar problem. But I'm not sure. http://lists.gforge.info.ucl.ac.be/pipermail/mozart-hackers/2003/001164.html -- Sam