From: Peter Maydell <peter.maydell@linaro.org>
To: QEMU Developers <qemu-devel@nongnu.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Subject: changing tests/qtest/meson.build causes unnecessary rebuilding
Date: Thu, 21 Jan 2021 11:56:36 +0000 [thread overview]
Message-ID: <CAFEAcA8mBK9932CLZ9uFtEa0rSycK6Sp9UDjSJnbJpg2hx8idg@mail.gmail.com> (raw)
$ make -C build/arm-clang/ -j8
make: Entering directory
'/home/petmay01/linaro/qemu-from-laptop/qemu/build/arm-clang'
[1/23] Generating qemu-version.h with a meson_exe.py custom command
make: Leaving directory
'/home/petmay01/linaro/qemu-from-laptop/qemu/build/arm-clang'
$ touch tests/qtest/meson.build
$ make -C build/arm-clang/ -j8
make: Entering directory
'/home/petmay01/linaro/qemu-from-laptop/qemu/build/arm-clang'
/usr/bin/ninja build.ninja && touch build.ninja.stamp
[0/1] Regenerating build files.
The Meson build system
[...]
It then goes on to rebuild hundreds or thousands of files, most of
which are not even in tests/. (Oddly, the exact set of files recompiled
seems to vary from run to run.)
Forcing a full rebuild of all of QEMU seems rather excessive when
the change was likely "add a new test case"...
thanks
-- PMM
next reply other threads:[~2021-01-21 11:57 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-21 11:56 Peter Maydell [this message]
2021-01-21 13:12 ` changing tests/qtest/meson.build causes unnecessary rebuilding Paolo Bonzini
2021-01-21 14:29 ` Thomas Huth
2021-01-21 15:31 ` Paolo Bonzini
2021-01-21 15:55 ` Philippe Mathieu-Daudé
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