> I cannot build libconvolve though because it depends on libdsp which is > not available for Debian any more (AFAIK) and the source tarball seems to > depend on NPTL headers (which do not seem to exist on my machine): > > DynThreads.cc:28:26: nptl/pthread.h: No such file or directory > The problem was with the line: ifndef USE_NPTL which was not defined, but for some reason my machine was ignoring (perhaps some gcc related problem??), leading it to look for /usr/include/nptl/pthread.h instead of /usr/include/pthread.h Fixed it with a little hand-editing! James