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authorPeter Maydell <peter.maydell@linaro.org>2014-05-23 17:07:24 +0100
committerMichael Tokarev <mjt@tls.msk.ru>2014-05-24 00:34:38 +0400
commit8cd05ab65a92a592e771a0a1847c7e5505d9a024 (patch)
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parent9c132c7f64c0605f5c5be79508fa53676be642f9 (diff)
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configure: Put tempfiles in a subdir of the build directory
When libtool support was added to configure, the new temporary files were left out of the list of files cleaned up on exit; this results in a lot of stale .lo files being left around in /tmp. Worse, libtool creates a /tmp/.libs directory which we can't easily clean up. Put all our temporary files in a single temporary directory created as a subdirectory of the build directory, so we can easily clean it up, and don't need fragile or complicated code for creation to avoid it clashing with temporary directories from other instances of QEMU configure or being subject to attack from adversaries who can write to /tmp. Since the temporaries now live in the build tree, we have no need to jump through hoops with a trap handler to try to remove them when configure exits; this fixes some weird bugs where hitting ^C during a configure run wouldn't actually make it stop, because we would run the trap handler but then not stop. (It is possible to get the trap handler semantics right but it is convoluted largely because of bugs in dash, so it is simpler to just avoid it.) Note that "temporary files go in the build directory, not /tmp" is the way autoconf behaves. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Diffstat (limited to 'libcacard')
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