wanting to clarify building with linuxthreads versus NPTL
Tue Dec 13 17:51:00 GMT 2005
It is pretty complete. however if you want linuxthreads and NPTL to be
using same ld.so you might want to build glibc with linuxthreads and
So that it understands the TLS.
Robert P. J. Day said the following on 12/13/2005 09:32 AM:
> as the last addition to my mini script, i want to add the ability to
> select either linuxthreads, NPTL or (what the heck) no threading at
> all, so i want to summarize the differences in building between all of
> the above. (i'll restrict myself to recent GNU software.)
> first, given that NPTL is now part of glibc proper, i only need to
> add the glibc-linuxthreads tarball if someone selects that threading
> model. so far, so good.
> the first couple steps of the toolchain creation:
> * install kernel headers
> * build and install binutils
> are identical as they have nothing to do with threads. from there on
> is what matters and i'm going based on what i think i needed to do to
> build with NPTL. one step at a time:
> install glibc headers:
> for linuxthreads, crosstool didn't appear to need to do anything in
> that step.
> for NPTL, it seems i was forced to add to the configure options:
> i'm pretty sure this was necessary as a later step would fail without
> it. does this make sense?
> build bootstrap gcc:
> for linuxthreads, it seemed that there was no need to add thread
> support to the bootstrap compiler:
> for NPTL, however, it seemed that i needed the additional configure
> --with-tls (not sure about this option)
> --enable-threads=posix ("posix" is probably default)
> again, does this make sense? does the bootstrap compiler really need
> thread support in the case of NPTL?
> building and installing glibc:
> for linuxthreads, this step in crosstool had the following
> thread-related configure options:
> for NPTL, though, i'm pretty sure i needed all of the following:
> final gcc:
> it seems both linuxthreads and NPTL just need to set
> --enable-threads (with "posix" being the likely default, anyway).
> any comments on the above? i just want the build to be as simple and
> straightforward as possible.
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