Vincent Legoll writes: > ping ? > > Anything I should add ? This traceroute implementation looks to be particularly difficult to build, just searching the web for some of the errors brings up other people having problems with it (like [1]). 1: https://patchwork.ozlabs.org/project/buildroot/patch/1539902241-10211-1-git-send-email-sergio.prado@e-labworks.com/ Some comments though, I'd suggest transforming what you're doing with make flags from modifying the phases to adding to the #:make-flags argument, so something like this: #:make-flags (list (string-append "LIBRARY_PATH=" (assoc-ref %build-inputs "libc") "/lib") (string-append "CFLAGS=-I" (assoc-ref %build-inputs "kernel-headers") "/include") "LDFLAGS=-lm -L../libsupp" (string-append "prefix=" (assoc-ref %outputs "out"))) What I've also done here is used the %build-inputs alist, which includes the implicit libc and kernel-headers inputs, so you can remove those inputs from the package definition. As for the -lm issue with the Makefile, that's pretty frustrating. The best thing I could come up with is something like this: (substitute* "default.rules" ((" \\$\\(LIBDEPS\\)") "$(filter-out -l%,$(LIBDEPS))")) That has the advantage of still passing the -lm flag to gcc, and just avoiding make tripping up over it. Finally, I think the license might be gpl2+, with lgpl2.1+ for libsupp, so it would be good to list both of those, with a comment describing what the lgpl license applies to. Could you send an updated patch? Thanks, Chris