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Distillation

ID: 28749486-a9b1-4ed8-9aa3-f22ec7f8e913

Session: 0Fx6yy0GQlxM

Generation: 0

Tokens: 962

R_compression: 8.717

C_norm: 0.001

Archived: No

Created: 2026-06-14 17:33:33

Source IDs:

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Observations

<observations> Date: Jun 14, 2026

🟡 (17:21) Sparse checkout confirmed: release/src-rt-5.04axhnd.675x/kernel/linux-4.19/ contains kernel 4.19.183 (exact match); linux-4.19/drivers/usb/serial/pl2303.c present (1051 lines, stock 4.19 version — no GL/HXN support)
🟡 (17:21) Router's saved .config at /home/byk/Code/pl2303-build/output/config (extracted Feb 17) confirmed as authoritative kernel config; no toolchain found in sparse checkout
🟡 (17:21) Key realization: original Feb 17 build used vanilla kernel.org 4.19.183; gnuton kernel has HND/Broadcom patches altering struct layouts (e.g. struct tty/usb-serial) — root cause of ABI mismatch
🟡 (17:21) router-sysdep.rt-ax58u_v2 dir confirmed present in 5.04 platform tree — exact model match
🔴 (17:25) User directed: "Replace stock pl2303 with the v6." (meaning: replace gnuton tree's stock pl2303.c/pl2303.h with the v6.1 backport from pl2303-build/)
🟡 (17:21–17:25) Build script /home/byk/Code/pl2303-build/build.sh iteratively updated; Dockerfile rebuilt (sha256:3526aef3101954b639fee21952baea9261d4e087161841797a64e7e29290cca4)
🟡 (17:23) First build attempt failed: net/netfilter/fltr/Kconfig missing — fltr was a dangling symlink → ../../../../router/fltr (router/ not in sparse checkout); fixed by replacing symlink with real dir + empty stub Kconfig and Makefile
🟡 (17:23) Second failure: net/netfilter/deDupTx/Kconfig missing — fixed by creating stub (deDupTx.c was present, Kconfig was empty)
🟡 (17:23) Total missing sourced Kconfigs found: 4 — arch/$(HEADER_ARCH)/um/Kconfig, arch/$(SRCARCH)/Kconfig (arch variable-expanded, resolve fine), Kconfig.inc1 (conditional), net/netfilter/fltr/Kconfig (real missing)
🟡 (17:24) Third failure: ../../bcmdrivers/Kconfig.autogen missing — referenced from Kconfig.bcm:2289; path is relative to kernel root (linux-4.19/../../bcmdrivers = platform root src-rt-5.04axhnd.675x/bcmdrivers); fixed by creating stub at platform root: /home/byk/Code/pl2303-build/gnuton-src/release/src-rt-5.04axhnd.675x/bcmdrivers/Kconfig.autogen
🟡 (17:24) Docker run restructured: mount platform root at /platform, set KDIR=/platform/kernel/linux-4.19 so ../../bcmdrivers resolves inside container
🟡 (17:25) Fourth failure: bare -D flag in compiler command causing "macro names must be identifiers" at kernel/bounds.s; root cause: Makefile:445: KBUILD_CFLAGS += -D$(MODEL) where MODEL = $(subst -,,$(BUILD_NAME)) and BUILD_NAME was unset → bare -D
🟡 (17:25) Fix: set BUILD_NAME=RT-AX58U in build script (router productid RT-AX58U_V2 → BUILD_NAME RT-AX58U → MODEL=RTAX58U → -DRTAX58U); passed as BUILD_NAME=$BUILD_NAME to all three make invocations (olddefconfig, modules_prepare, M=drivers/usb/serial modules)
🟡 (17:26) Build succeeded: pl2303-gnuton.ko (22064 bytes) output to `/home/byk/Code/pl2303