Tomáš Čech <sleep_wal...@gnu.org> skribis: > As I was tracing curl code, I needed to rebuild the package with > "-ggdb" in CFLAGS and enable debug among outputs. > > The later doesn't change the hash (and the generated code), but the > first does.
Both approaches change the output hash. (As soon as a bit changes in the build process, the output hash changes.) Adding a “debug” output is nice because we have support to automatically DTRT (info "(guix) Installing Debugging Files"). > So I'd like to propose to put "-ggdb" to generally applied CFLAGS for > whole distribution. Packages that have an autoconf-based build system, and I suppose most others, are built with -g. The binaries get stripped by default and debugging info is lost unless the package has a “debug” output. Currently a few key packages have that, but most don’t (I think Debian does something similar, not sure about other distros.) We could make it opt-out rather than opt-in, but the issue is disk usage on build machine (including end-user machines.) See <http://lists.gnu.org/archive/html/bug-guix/2013-07/msg00015.html>. Thoughts? Ludo’.
