On Mon, 15 Jun 2020 15:18:48 -0000 Alex Bennée <1883...@bugs.launchpad.net> wrote:
> Public bug reported: > > >From time to time I find check-tcg crashes with a one of the MIPS > binaries. The last time it crashed was running the test: > > ./mips64el-linux-user/qemu-mips64el ./tests/tcg/mips64el-linux- > user/threadcount > > Inevitably after some time noodling around wondering what could be > causing this weird behaviour I wonder if it is a build issue. I wipe all > the mips* build directories, re-run configure and re-build and voila > problem goes away. > > It seems there must be some sort of build artefact which isn't being > properly re-generated on a build update which causes weird problems. > Additional data point if I: > > rm -rf mips64el-linux-user > ../../configure > make > > then I see failures in mip32 builds - eg: > > GEN mipsn32el-linux-user/config-target.h > In file included from /home/alex/lsrc/qemu.git/linux-user/syscall_defs.h:10, > from /home/alex/lsrc/qemu.git/linux-user/qemu.h:16, > from /home/alex/lsrc/qemu.git/linux-user/linuxload.c:5: > /home/alex/lsrc/qemu.git/linux-user/mips64/syscall_nr.h:1: error: > unterminated #ifndef > #ifndef LINUX_USER_MIPS64_SYSCALL_NR_H > > make[1]: *** [/home/alex/lsrc/qemu.git/rules.mak:69: > linux-user/linuxload.o] Error 1 > make[1]: *** Waiting for unfinished jobs.... > > which implies there is a cross dependency between different targets > somewhere. If I executed: > > rm -rf mips* > > before re-configuring and re-building then everything works again. > > ** Affects: qemu > Importance: Undecided > Status: New > > > ** Tags: build linux-user mips > FWIW, this does not seem to be a mips-only issue: I'm seeing the threadcount test fail with s390x-linux-user as well, and it also goes away (only) if I purge the build directory, re-configure, and re-build.
