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build: strip kernel modules with --strip-unneeded, not --strip-debug #2502

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Merged
openipc-ai merged 1 commit into from
Sep 30, 2026
Merged

build: strip kernel modules with --strip-unneeded, not --strip-debug #2502

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12 changes: 12 additions & 0 deletions general/external.mk
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Original file line number Diff line number Diff line change
Expand Up @@ -28,5 +28,17 @@ OPENIPC_TOOLCHAIN := toolchain/toolchain.$(OPENIPC_KERNEL)
# by ~45KB in the size report rather than anything failing.
WPA_SUPPLICANT_CONFIG_DISABLE += CONFIG_TDLS CONFIG_IEEE80211R

# linux.mk passes INSTALL_MOD_STRIP=1, which the kernel turns into
# `strip --strip-debug`: every module still ships its full .symtab/.strtab.
# Any other value is handed to strip as its options, and --strip-unneeded keeps
# exactly the symbols relocation and __ksymtab need. The last assignment on the
# make command line wins, and pkg-kernel-module.mk installs with the same
# LINUX_MAKE_FLAGS, so out-of-tree modules (wireguard, the Wi-Fi drivers) are
# covered too. Same include-order dependency as the line above. The cost is
# that an oops inside a module prints offsets instead of its static function
# names. On hi3516ev300 this took the 26 in-tree and wireguard modules from
# 1827288 to 1624584 B, and all 26 loaded and worked on the camera.
LINUX_MAKE_FLAGS += INSTALL_MOD_STRIP=--strip-unneeded

include $(sort $(wildcard $(BR2_EXTERNAL)/package/*/*.mk))
include $(sort $(wildcard $(BR2_EXTERNAL)/package/legacy/*/*.mk))
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