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[Qemu-devel] [Bug 1813010] Re: Parallel builds fail (make -j >=2) when u
From: |
Shahab Vahedi |
Subject: |
[Qemu-devel] [Bug 1813010] Re: Parallel builds fail (make -j >=2) when using --extra-cflags "--save-temps" |
Date: |
Wed, 23 Jan 2019 13:34:13 -0000 |
it seems like that "-save-temps" in "cflags" is the culprit. I removed
it and it was possible to build with 8 instances:
# removed "-save-temps" from the "cflags"
> ./qemu/configure --target-list=riscv64-softmmu --enable-debug
> --extra-cflags='-O0 -g3' --prefix=/install/riscv-qemu
# build without any problem
> make -j 8
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https://bugs.launchpad.net/bugs/1813010
Title:
Parallel builds fail (make -j >=2) when using --extra-cflags "--save-
temps"
Status in QEMU:
Confirmed
Bug description:
specs:
QEMU commit: 9f33051abce238ab43a23125e237aac8b0931b88
# of Cores: 8
Host kernel: Linux 4.19.16-1-lts
Host type: x86_64 GNU/Linux
Host distro: Archlinux
Guest: we never get that far
steps:
# fresh copy of the latest commit
> git clone https://git.qemu.org/git/qemu.git
# separate build dir
> mkdir build
> cd build
# sample configuration for riscv (this happens for other targets as well)
> ../qemu/configure --target-list=riscv64-softmmu --enable-debug
--extra-cflags='-O0 -g3 -save-temps' --prefix=/install/riscv-qemu
# this will fail (see attached log file)
> make -j 2
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