On Fri, Aug 14, 2020 at 08:13:22PM +0200, Adrian Fiergolski wrote: > Hi, > > I am using yocto to build my custom distribution targetting arm64 on > Ubuntu 18.04.4. > > I have an issue compiling dts which was preprocessed with gcc version > 7.5.0 (I haven't tried other version) and '-g3' flag. The error message: Huh. It's surprising to me that -g options affect the preprocessor behavior at all. > ./scripts/dtc/dtc -O dtb -o > arch/arm64/boot/dts/xilinx/zynqmp-falcon.dtb -b 0 > -i/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/arch/arm64/boot/dts/xilinx/ > -i/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/scripts/dtc/include-prefixes > -Wno-unit_address_vs_reg -Wno-unit_address_format > -Wno-avoid_unnecessary_addr_size -Wno-alias_paths > -Wno-graph_child_address -Wno-simple_bus_reg > -Wno-unique_unit_address -Wno-pci_device_reg -d > arch/arm64/boot/dts/xilinx/.zynqmp-falcon.dtb.d.dtc.tmp > arch/arm64/boot/dts/xilinx/.zynqmp-falcon.dtb.dts.tmp > > Error: <built-in>:1.1-2 syntax error > FATAL ERROR: Unable to parse input tree > > The part of a preprocessed dts causing issue: > > # 1 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/arch/arm64/boot/dts/xilinx/zynqmp-falcon.dts" > # 1 > "/home/afiergol/fastree/falcon/poky/build/tmp/work/falcon_zynqmp-poky-linux/linux-xlnx/5.4+gitAUTOINC+22b71b4162-r0/linux-falcon_zynqmp-standard-build//" > # 1 "<built-in>" > #define __STDC__ 1 If it's preprocessed already, why does it still have #defines? This is the cause of the problem - the dtc lexer can hande the lines in the preprocessor output with file/linue number information, but it doesn't expect there to be remaining preprocessor directives. > #define __ASSEMBLER__ 1 > #define __STDC_HOSTED__ 1 > # 1 "<command-line>" > #define __DTS__ 1 > # 1 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/arch/arm64/boot/dts/xilinx/zynqmp-falcon.dts" > # 11 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/arch/arm64/boot/dts/xilinx/zynqmp-falcon.dts" > /dts-v1/; > > # 1 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/arch/arm64/boot/dts/xilinx/zynqmp.dtsi" > 1 > # 15 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/arch/arm64/boot/dts/xilinx/zynqmp.dtsi" > # 1 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/scripts/dtc/include-prefixes/dt-bindings/power/xlnx-zynqmp-power.h" > 1 > > The full command preprocessing dts: > > gcc -O0 -g3 -fno-omit-frame-pointer > -L/home/afiergol/fastree/falcon/poky/build/tmp/work/falcon_zynqmp-poky-linux/linux-xlnx/5.4+gitAUTOINC+22b71b4162-r0/recipe-sysroot-native/usr/lib > -L/home/afiergol/fastree/falcon/poky/build/tmp/work/falcon_zynqmp-poky-linux/linux-xlnx/5.4+gitAUTOINC+22b71b4162-r0/recipe-sysroot-native/lib > -Wl,--enable-new-dtags > -Wl,-rpath-link,/home/afiergol/fastree/falcon/poky/build/tmp/work/falcon_zynqmp-poky-linux/linux-xlnx/5.4+gitAUTOINC+22b71b4162-r0/recipe-sysroot-native/usr/lib > -Wl,-rpath-link,/home/afiergol/fastree/falcon/poky/build/tmp/work/falcon_zynqmp-poky-linux/linux-xlnx/5.4+gitAUTOINC+22b71b4162-r0/recipe-sysroot-native/lib > -Wl,-rpath,/home/afiergol/fastree/falcon/poky/build/tmp/work/falcon_zynqmp-poky-linux/linux-xlnx/5.4+gitAUTOINC+22b71b4162-r0/recipe-sysroot-native/usr/lib > -Wl,-rpath,/home/afiergol/fastree/falcon/poky/build/tmp/work/falcon_zynqmp-poky-linux/linux-xlnx/5.4+gitAUTOINC+22b71b4162-r0/recipe-sysroot-native/lib > -Wl,-O1 -Wl,--allow-shlib-undefined > -Wl,--dynamic-linker=/home/afiergol/fastree/falcon/poky/build/tmp/sysroots-uninative/x86_64-linux/lib/ld-linux-x86-64.so.2 > -E $(dtc_cpp_flags) -x assembler-with-cpp -o > arch/arm64/boot/dts/xilinx/.zynqmp-falcon.dtb.dts.tmp > > Once the '-g3' flag is removed, the part of the preprocessed DTS looks > like this: > > # 1 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/arch/arm64/boot/dts/xilinx/zynqmp-falcon.dts" > # 1 "<built-in>" > # 1 "<command-line>" > # 1 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/arch/arm64/boot/dts/xilinx/zynqmp-falcon.dts" > # 11 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/arch/arm64/boot/dts/xilinx/zynqmp-falcon.dts" > /dts-v1/; > > # 1 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/arch/arm64/boot/dts/xilinx/zynqmp.dtsi" > 1 > # 15 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/arch/arm64/boot/dts/xilinx/zynqmp.dtsi" > # 1 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/scripts/dtc/include-prefixes/dt-bindings/power/xlnx-zynqmp-power.h" > 1 > # 16 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/arch/arm64/boot/dts/xilinx/zynqmp.dtsi" > 2 > # 1 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/scripts/dtc/include-prefixes/dt-bindings/reset/xlnx-zynqmp-resets.h" > 1 > # 17 > "/home/afiergol/fastree/falcon/poky/build/tmp/work-shared/falcon-zynqmp/kernel-source/arch/arm64/boot/dts/xilinx/zynqmp.dtsi" > 2 > > And the device compiler succeeds. > > Is it a known behaviour? Not to me. I don't think I've ever tried using -g3. -- David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson
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