Hi, I've been following the directions here: <https://backports.wiki.kernel.org/index.php/Documentation/packaging#Cross_compiling> Thanks you your help, I've successfully run gentree.py I used a "make showcommands kernelconfig" Android build command to find the proper CROSS_COMPILE and ARCH variables for building the kernel. I then pointed KLIB and KLIB_BUILD to the proper directories for my Android build (it uses a separate build directory for everything, including the kernel). From my backports directory: set -a CROSS_COMPILE=aarch64-linux-android- ARCH=arm64 KLIB=/media/remicles/BP2/work/linux_android_board_support_package_vla.br_.1.2.4-01810-8x16.0-3/APQ8016_410C_LA.BR.1.2.4-01810-8x16.0_5.1.1_Lollipop_P2/kernel KLIB_BUILD=/media/remicles/BP2/work/linux_android_board_support_package_vla.br_.1.2.4-01810-8x16.0-3/APQ8016_410C_LA.BR.1.2.4-01810-8x16.0_5.1.1_Lollipop_P2/out/target/product/msm8916_64/obj/KERNEL_OBJ set +a make menuconfig That succeeds and shows me a menu. However, '<M> USB Network Adapters ----' is an empty menu and the rtl8192cu driver I am after is not available. Enabling CPTCFG_WLAN_VENDOR_REALTEK in 'make menuconfig' doesn't lead to any other options. If I instead run 'make defconfig-rtlwifi' (which includes 'CPTCFG_RTL8192CU=m'), then the resulting .config file still contains: $ grep -i -e "rtl" -e "realtek" .config CPTCFG_WLAN_VENDOR_REALTEK=y CPTCFG_NET_VENDOR_REALTEK=y CPTCFG_BACKPORTED_WLAN_VENDOR_REALTEK=y # CPTCFG_BACKPORTED_RTL8180 is not set [snip] # CPTCFG_BACKPORTED_RTL8192CU is not set # CPTCFG_BACKPORTED_RTLWIFI is not set # CPTCFG_BACKPORTED_RTLWIFI_PCI is not set # CPTCFG_BACKPORTED_RTLWIFI_USB is not set # CPTCFG_BACKPORTED_RTLWIFI_DEBUG is not set [snip] # CPTCFG_BACKPORTED_USB_RTL8152 is not set At this point, a build includes compat.ko and cfg80211.ko, but no rtl8192cu.ko, of course. If I understand this page correctly, I need to first disable conflicting drivers in my target kernel .config before running 'make menuconfig' in backports. <https://backports.wiki.kernel.org/index.php/Documentation/integration#Kernel_integration_menuconfig> I've tried a number of target kernel configurations, but haven't found a combination that makes backports happy yet. I've disable CONFIG_CFG80211 and CONFIG_WLAN, but no luck. I've tried to dive into Makefile.real to understand how the two .config files interact, but I don't understand menuconfig/kconf enough. Is there a way I can get some debug output to see any conflicts between my .config files? I've thought about just copying the backports driver code into my target kernel source directory and building from there, but I'm not sure if that would work or is advised. My guess is that it could be a mess without using the backports Kconfig files. My goal is to have an rtl8192cu.ko module (and the modules it depends on) that I can load on the target. Does anyone have any pointers or suggestions? Thank you, Remington -- To unsubscribe from this list: send the line "unsubscribe backports" in
