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    SubjectRe: [PATCH -mm] replacement for broken kbuild-dont-put-temp-files-in-the-source-tree.patch
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    On 2006-10-30, Jan Beulich wrote:
    >
    >>>gcc does not delete files specified with -o - but binutils does.
    >>>So using /dev/null in this case is not an option.
    >>
    >>Hmm. What's the preblem to invoke `as' via the GNU C compiler, then?
    >
    >Older gas, whether invoked from gcc or the command line or elsewhere,
    >deletes its output on error, regardless of whether this is a special file
    >(device). gcc can't make gas not do so.

    So, how about (using your btmp directory) create symlink to /dev/null in
    the (dev) sub-directory and then set no write permission? No tmp,
    things are local to build output, old gas's happy:
    ,__
    |olecom@flower:/tmp/_build_2.6.19-rc3/btmp
    !__$ mkdir dev
    ,__
    |olecom@flower:/tmp/_build_2.6.19-rc3/btmp
    !__$ cd dev ; ln -s /dev/null null ; chmod u-w . ; ls -la
    total 0
    dr-xr-x--- 2 olecom root 60 2006-10-30 15:34 .
    drwxr-x--- 3 olecom root 80 2006-10-30 15:34 ..
    lrwxrwxrwx 1 olecom root 9 2006-10-30 15:34 null -> /dev/null
    ,__
    |olecom@flower:/tmp/_build_2.6.19-rc3/btmp/dev
    !__$ cd .. ; rm dev/null
    rm: cannot remove dev/null': Permission denied
    ,__
    |olecom@flower:/tmp/_build_2.6.19-rc3/btmp
    !__$ echo ok > dev/null
    ,__
    |olecom@flower:/tmp/_build_2.6.19-rc3/btmp
    !__$

    New featured dev/null may be set in some kind of make variable, say
    $(null) in scripts/Kbuild.include.
    ____
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