can't build x1e-6.16.0-rc5-jg-0

[emezeta]

Hello:

I'm having trouble trying to compile the ubuntu-qcom-x1e-6.16.0-rc5-jg-0 tag version. After seeing some output messages, I had to make adjustments to my host installation (25.05). Finally, I added RUST_LIB_SRC=/usr/src/rustc-$(rustc --version | cut -d' ' -f2)/library to ./rebuild.sh, but it didn't make any difference.

_RB_ is my root build directory. These are the error outputs:

find /_RB_/debian/build/build-qcom-x1e -name "*.ko" | xargs rm -f
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- HOSTCC=x86_64-linux-gnu-gcc-14 CC=aarch64-linux-gnu-gcc-14 RUSTC=rustc HOSTRUSTC=rustc RUSTFMT=rustfmt BINDGEN=bindgen KERNELRELEASE=6.16.0-rc5-jg-0-qcom-x1e CONFIG_DEBUG_SECTION_MISMATCH=y KBUILD_BUILD_VERSION="0" CFLAGS_MODULE="-DPKG_ABI=0" PYTHON=python3 O=/_RB_/debian/build/build-qcom-x1e -j8 rustavailable || true
make[1]: Entering directory '/_RB_'
make[2]: Entering directory '/_RB_/debian/build/build-qcom-x1e'
***
*** Source code for the 'core' standard library could not be found
*** at '/usr/lib/rust-1.84/lib/rustlib/src/rust/library/core/src/lib.rs'.
***
***
*** Please see Documentation/rust/quick-start.rst for details
*** on how to set up the Rust support.
***
make[3]: *** [/_RB_/Makefile:1807: rustavailable] Error 1
make[2]: *** [/_RB_/Makefile:248: __sub-make] Error 2
make[2]: Leaving directory '/_RB_/debian/build/build-qcom-x1e'
make[1]: *** [Makefile:248: __sub-make] Error 2
make[1]: Leaving directory '/_RB_'
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- HOSTCC=x86_64-linux-gnu-gcc-14 CC=aarch64-linux-gnu-gcc-14 RUSTC=rustc HOSTRUSTC=rustc RUSTFMT=rustfmt BINDGEN=bindgen KERNELRELEASE=6.16.0-rc5-jg-0-qcom-x1e CONFIG_DEBUG_SECTION_MISMATCH=y KBUILD_BUILD_VERSION="0" CFLAGS_MODULE="-DPKG_ABI=0" PYTHON=python3 O=/_RB_/debian/build/build-qcom-x1e -j8 olddefconfig
make[1]: Entering directory '/_RB_'
make[2]: Entering directory '/_RB_/debian/build/build-qcom-x1e'
***
*** The source tree is not clean, please run 'make ARCH=arm64 mrproper'
*** in /_RB_
***
make[3]: *** [/_RB_/Makefile:678: outputmakefile] Error 1
make[2]: *** [/_RB_/Makefile:248: __sub-make] Error 2
make[2]: Leaving directory '/_RB_/debian/build/build-qcom-x1e'
make[1]: *** [Makefile:248: __sub-make] Error 2
make[1]: Leaving directory '/_RB_'
make: *** [debian/rules.d/2-binary-arch.mk:35: /_RB_/debian/stamps/stamp-prepare-qcom-x1e] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2

real    6m51.567s
user    5m38.196s
sys     1m25.185s

Any little hint would help.
Thanks!

[jglathe]

Oh. I really should do write up some more wiki about this. I get these fails quite often, and usually there was something un-clean I did before (or some debian script did).

***
*** The source tree is not clean, please run 'make ARCH=arm64 mrproper'
*** in /_RB_
***

The way out of this is:

• If your work is already committed to git, good. If not, strongly suggest it. At least stash it with git stash. Be careful, though. The changes you want to keep should be in tracked files, meaning at least staged.
• Invoke make -j<numthreads> mrproper. This will clean the whole build tree from temporary build files. Unfortunately, it will also wreak havoc on the debian/ directory. Therefore the next step.
• invoke git reset --hard. This restores the state at commit.
• if you only stashed the last changes, additionally invoke git stash pop. This restores the stashed changes.
• try another build run with ./rebuild.sh.

I wrote about this here, too.

[emezeta]

Thanks Jens. This makes things go smoothly. 👍