The bug seems to happen again for libvirt-python in Stonking FTBFS for amd64v3: https://launchpadlibrarian.net/872450542/buildlog_ubuntu-stonking-amd64v3.libvirt-python_12.6.0-1_BUILDING.txt.gz
On Thu, Mar 26, 2026 at 11:25 AM Hector Cao <[email protected]> wrote: > For debian > > Even if it hard to make the failure happen > > I manage to make it happen by adding a expensive compilation snippet to > libvirt-utils.c and loop on the package building > after some timen it fails with this log: > > creating build/temp.linux-x86_64-cpython-314/build > building 'libvirtmod_qemu' extension > creating build/temp.linux-x86_64-cpython-314/build > x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I. -I/usr/include/python3.14 -c > build/libvirt.c -o build/temp.linux-x86_64-cpython-314/build/libvirt.o > -Ibuild -Wp,-DPy_LIMITED_API=0x03060000 > x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I. -I/usr/include/python3.14 -c > build/libvirt-qemu.c -o > build/temp.linux-x86_64-cpython-314/build/libvirt-qemu.o -Ibuild > -Wp,-DPy_LIMITED_API=0x03060000 > building 'libvirtmod_lxc' extension > x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I. -I/usr/include/python3.14 -c > build/libvirt-lxc.c -o > build/temp.linux-x86_64-cpython-314/build/libvirt-lxc.o -Ibuild > -Wp,-DPy_LIMITED_API=0x03060000 > x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I. -I/usr/include/python3.14 -c > libvirt-qemu-override.c -o > build/temp.linux-x86_64-cpython-314/libvirt-qemu-override.o -Ibuild > -Wp,-DPy_LIMITED_API=0x03060000 > x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I. -I/usr/include/python3.14 -c > libvirt-lxc-override.c -o > build/temp.linux-x86_64-cpython-314/libvirt-lxc-override.o -Ibuild > -Wp,-DPy_LIMITED_API=0x03060000 > x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I. -I/usr/include/python3.14 -c > libvirt-utils.c -o build/temp.linux-x86_64-cpython-314/libvirt-utils.o > -Ibuild -Wp,-DPy_LIMITED_API=0x03060000 > x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I. -I/usr/include/python3.14 -c > libvirt-utils.c -o build/temp.linux-x86_64-cpython-314/libvirt-utils.o > -Ibuild -Wp,-DPy_LIMITED_API=0x03060000 > x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I. -I/usr/include/python3.14 -c > typewrappers.c -o build/temp.linux-x86_64-cpython-314/typewrappers.o > -Ibuild -Wp,-DPy_LIMITED_API=0x03060000 > x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I. -I/usr/include/python3.14 -c > typewrappers.c -o build/temp.linux-x86_64-cpython-314/typewrappers.o > -Ibuild -Wp,-DPy_LIMITED_API=0x03060000 > x86_64-linux-gnu-gcc -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-z,relro > -g -fwrapv -O2 -Wl,-z,relro -Wl,-z,now -g -O2 > -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 > build/temp.linux-x86_64-cpython-314/build/libvirt-lxc.o > build/temp.linux-x86_64-cpython-314/libvirt-lxc-override.o > build/temp.linux-x86_64-cpython-314/libvirt-utils.o > build/temp.linux-x86_64-cpython-314/typewrappers.o > -L/usr/lib/x86_64-linux-gnu -lvirt-lxc -lvirt -o > build/lib.linux-x86_64-cpython-314/ > libvirtmod_lxc.cpython-314-x86_64-linux-gnu.so > /usr/bin/x86_64-linux-gnu-ld.bfd: cannot find > build/temp.linux-x86_64-cpython-314/typewrappers.o: No such file or > directory > x86_64-linux-gnu-gcc -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-z,relro > -g -fwrapv -O2 -Wl,-z,relro -Wl,-z,now -g -O2 > -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 > build/temp.linux-x86_64-cpython-314/build/libvirt-qemu.o > build/temp.linux-x86_64-cpython-314/libvirt-qemu-override.o > build/temp.linux-x86_64-cpython-314/libvirt-utils.o > build/temp.linux-x86_64-cpython-314/typewrappers.o > -L/usr/lib/x86_64-linux-gnu -lvirt-qemu -lvirt -o > build/lib.linux-x86_64-cpython-314/ > libvirtmod_qemu.cpython-314-x86_64-linux-gnu.so > collect2: error: ld returned 1 exit status > x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I. -I/usr/include/python3.14 -c > libvirt-override.c -o > build/temp.linux-x86_64-cpython-314/libvirt-override.o -Ibuild > -Wp,-DPy_LIMITED_API=0x03060000 > x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I. -I/usr/include/python3.14 -c > libvirt-utils.c -o build/temp.linux-x86_64-cpython-314/libvirt-utils.o > -Ibuild -Wp,-DPy_LIMITED_API=0x03060000 > x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I. -I/usr/include/python3.14 -c > typewrappers.c -o build/temp.linux-x86_64-cpython-314/typewrappers.o > -Ibuild -Wp,-DPy_LIMITED_API=0x03060000 > x86_64-linux-gnu-gcc -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-z,relro > -g -fwrapv -O2 -Wl,-z,relro -Wl,-z,now -g -O2 > -Werror=implicit-function-declaration > -ffile-prefix-map=/src/libvirt-python-12.0.0=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection > -Wdate-time -D_FORTIFY_SOURCE=2 > build/temp.linux-x86_64-cpython-314/build/libvirt.o > build/temp.linux-x86_64-cpython-314/libvirt-override.o > build/temp.linux-x86_64-cpython-314/libvirt-utils.o > build/temp.linux-x86_64-cpython-314/typewrappers.o > -L/usr/lib/x86_64-linux-gnu -lvirt -o build/lib.linux-x86_64-cpython-314/ > libvirtmod.cpython-314-x86_64-linux-gnu.so > error: command '/usr/bin/x86_64-linux-gnu-gcc' failed with exit code 1 > > ERROR Backend subprocess exited when trying to invoke build_wheel > E: pybuild pybuild:485: build: plugin pyproject failed with: exit code=1: > python3.14 -m build --skip-dependency-check --no-isolation --wheel --outdir > /src/libvirt-python-12.0.0/.pybuild/cpython3_3.14 > dh_auto_build: error: pybuild --build -i python{version} -p 3.14 > --parallel=16 returned exit code 13 > make: *** [debian/rules:14: binary] Error 25 > dpkg-buildpackage: error: debian/rules binary subprocess failed with exit > status 2 > debuild: fatal error at line 1185: > dpkg-buildpackage -us -uc -ui -b failed > > > On Thu, Mar 26, 2026 at 9:05 AM Hector Cao <[email protected]> > wrote: > >> Hello Matthias, >> >> Thanks for your feedback >> >> libvirt-python contains several extensions: libvirtmod, libvirtmod_qemu, >> libvirtmod_lxc >> those extensions use common source files (typewrappers.c, libvirt-utils.c) >> >> The fact that we enable parallel build and the build of all extensions >> are done in the same folder might lead to >> race condition that can lead to undeterministic output of the build >> >> Right now, enabling -lto seems to increase the occurrence of this race >> condition but I am not surprised if that happens >> in other conditions. >> >> On Tue, Mar 24, 2026 at 1:17 PM Matthias Klose <[email protected]> wrote: >> >>> Control: tags -1 + moreinfo >>> >>> how does this relate to an internal compiler error? >>> >>> >> >> -- >> Hector CAO >> Software Engineer – Server Team / Virtualization >> [email protected] >> https://launc <https://launchpad.net/~hectorcao>hpad.net/~hectorcao >> <https://launchpad.net/~hectorcao> >> >> <https://launchpad.net/~hectorcao> >> > > > -- > Hector CAO > Software Engineer – Server Team / Virtualization > [email protected] > https://launc <https://launchpad.net/~hectorcao>hpad.net/~hectorcao > <https://launchpad.net/~hectorcao> > > <https://launchpad.net/~hectorcao> > -- Hector CAO Software Engineer – Server Team / Virtualization [email protected] https://launc <https://launchpad.net/~hectorcao>hpad.net/~hectorcao <https://launchpad.net/~hectorcao> <https://launchpad.net/~hectorcao>
