feat: add cross-compilation support and Docker containerized builds for kernel packaging - #57
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guanquan (GuanquanTian) wants to merge 5 commits into
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…uisites before clean - Detect a build/host arch mismatch and enable cross builds via dpkg foreign-architecture, the "cross" build profile, and DEB_HOST_ARCH/GNU_TYPE/MULTIARCH propagation. - Factor debian/control generation and native-host-tool-dep patching into scripts/lib/gen-real-control.sh, shared with build-docker-image.sh. - Install fakeroot/debhelper before running `debian/rules clean`, which requires both to run. - Mark native-host build tools (e.g. llvm-*-dev) `:native` via a pattern-keyed NATIVE_HOST_TOOL_DEPS table, and restore debian/control from a backup on exit. - Support OUTPUT_DIR override, and exit with an explicit error message when apt-get build-dep or dch need root but no sudo binary is available. - Add binary-indep to the build targets so the arch:all linux-qcom-headers-* package is produced alongside the flavour packages. Signed-off-by: Guanquan Tian <guanquan@qti.qualcomm.com>
…rfile - Add scripts/Dockerfile.kernel-build, built FROM docker.io/library/ubuntu:resolute (falling back to public.ecr.aws/ubuntu/ubuntu:resolute), with build deps resolved dynamically from the kernel tree's own debian/control via `debian/rules clean`. - Add scripts/build-docker-image.sh to drive it: runs `debian/rules clean` on the host, copies the generated debian/control into a scratch build context, and passes TARGET_ARCH/CROSS build args. - The image is built from a Dockerfile checked into this repo. Signed-off-by: Guanquan Tian <guanquan@qti.qualcomm.com>
…t uid/gid - Build the local image on demand via build-docker-image.sh if not already present. - Bind-mount the current directory, OUTPUT_DIR, SOURCE_DIR's parent (where debian/rules writes .deb/.changes/.buildinfo), and the script directory (read-only). - Run the container as the invoking host uid/gid. - Resolve SOURCE_DIR from the path passed in. - Support OUTPUT_DIR override, created on the host before the container starts. Signed-off-by: Guanquan Tian <guanquan@qti.qualcomm.com>
Add scripts/README.md covering build-kernel-deb.sh, docker-build-kernel.sh, and build-docker-image.sh usage, arguments, environment variables, and cross-compilation notes. Signed-off-by: Guanquan Tian <guanquan@qti.qualcomm.com>
- Pass HTTP_PROXY/HTTPS_PROXY/NO_PROXY as Docker build args, scoped to the individual RUN steps in Dockerfile.kernel-build (not ENV), so they never leak into the built image or its containers. - Document the one-time, per-machine proxy setup and the two new env vars in scripts/README.md. - Note that linux-headers-*-qcom depends on linux-qcom-headers-*, so the latter must be installed first. Signed-off-by: Guanquan Tian <guanquan@qti.qualcomm.com>
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Summary
Test plan
According to PR # 33 review's feedback, complete the corresponding modifications and add support for setting container content proxies.
#33