On 2025-02-18, Chris Lamb wrote: > Whilst working on the Reproducible Builds effort [0], we noticed that > onevpl-intel-gpu could not be built reproducibly. > > This is because the binary embeds the kernel version into one of the > binaries via the MFX_BUILD_INFO macro: > > │ │ │ ├── ./usr/lib/x86_64-linux-gnu/libmfx-gen.so.1.2.13 ... > │ │ │ │ │ -mediasdk_build_info: Linux-6.12.9+bpo-amd64 6.12.9+bpo-amd64 | GNU > 14.2.0 | glibc 2.40 > │ │ │ │ │ +mediasdk_build_info: Linux-6.1.0-31-amd64 6.1.0-31-amd64 | GNU > 14.2.0 | glibc 2.40
> A patch is attached that ensures that this value is not passed to the > compiler, resulting in "no build info" (via an #ifndef already in the > code). > > An alternative approach is perhaps adding: > > export DEB_CPPFLAGS_MAINT_APPEND = -DMFX_BUILD_INFO="no build info" > > ... to debian/rules, although this will result in "redefinition" > warnings in the build log as it will cause multiple -DMFX_BUILD_INFO="[…]" > comand-line arguments. I *thought* this looked familiar! https://bugs.debian.org/1006455 With the newer upstream version, It looks like this can be easily fixed in debian/rules with: diff --git a/debian/rules b/debian/rules index 47129d2..95146a9 100755 --- a/debian/rules +++ b/debian/rules @@ -7,7 +7,8 @@ override_dh_auto_configure: dh_auto_configure -- \ -DBUILD_TESTS=ON \ - -DBUILD_TOOLS=ON + -DBUILD_TOOLS=ON \ + -DMFX_SYSTEM=Debian %: dh $@ --builddir build/ ... or some other deterministic value for MFX_SYSTEM. At the moment, tests.reproducible-builds.org is not varying the kernel version, so it is not detecting this issue, but I can reproduce the issue locally. As soon as someone tries to reproduce a build with a slightly different kernel version, this will trigger the reproducibility issue. I would like to fix this by performing an NMU with the above patch, unless the maintainers would like to tackle this some other way? live well, vagrant
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