Errors building index

Clang Frontend clangd
#1

Hi all,
Using clangd-10 on a cross-compiled kernel with yocto I can’t figure what prevent clangd to index the sources.
Here is a snapshot of some errors I can get:

[ ERROR ] 2020-10-22T13:59:07+0200 ] …ount_vidyVHHo/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” ‘I[13:59:07.059] Updating file /home/seb/git/dn_industry_linux/drivers/net/ethernet/freescale/fec_main.c with command \n[/home/seb/git/dn_industry_linux]\naarch64-poky-linux-gcc -target aarch64-poky-linux -Wp,-MD,drivers/net/ethernet/freescale/.fec_main.o.d -nostdinc -isystem /home/seb/build/toolchains/zeus_5.4_aarch64/sysroots/x86_64-pokysdk-linux/usr/lib/aarch64-poky-linux/gcc/aarch64-poky-linux/9.2.0/include -I./arch/arm64/include -I./arch/arm64/include/generated -I./include -I./arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -D__KERNEL__ -mlittle-endian -DKASAN_SHADOW_SCALE_SHIFT=3 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -std=gnu89 -mgeneral-regs-only -DCONFIG_AS_LSE=1 -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -Wno-psabi -mabi=lp64 -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-frame-address -Wno-format-truncation -Wno-format-overflow -Wno-address-of-packed-member -O2 --param=allow-store-data-races=0 -Wframe-larger-than=2048 -fstack-protector-strong -Wno-unused-but-set-variable -Wimplicit-fallthrough -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-var-tracking-assignments -g -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wno-stringop-truncation -fno-strict-overflow -fno-merge-all-constants -fmerge-constants -fno-stack-check -fconserve-stack -Werror=date-time -Werror=incompatible-pointer-types -Werror=designated-init -fmacro-prefix-map=./= -Wno-packed-not-aligned --sysroot=/home/seb/build/toolchains/zeus_5.4_aarch64/sysroots/aarch64-poky-linux -mstack-protector-guard=sysreg -mstack-protector-guard-reg=sp_el0 -mstack-protector-guard-offset=1152 -DKBUILD_BASENAME=“fec_main” -DKBUILD_MODNAME=“fec” -c -o drivers/net/ethernet/freescale/fec_main.o drivers/net/ethernet/freescale/fec_main.c -fsyntax-only -resource-dir=/usr/lib/llvm-10/lib/clang/10.0.0\n’
[ ERROR ] 2020-10-22T13:59:07+0200 ] …ount_vidyVHHo/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “E[13:59:07.091] Could not build a preamble for file /home/seb/git/dn_industry_linux/drivers/net/ethernet/freescale/fec_main.c\n”

Then indexing keeps failing:
[ ERROR ] 2020-10-22T13:59:07+0200 ] …ount_vidyVHHo/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “E[13:59:07.543] Indexing net/mac80211/ht.c failed: Couldn’t build compiler instance\n”
[ ERROR ] 2020-10-22T13:59:07+0200 ] …ount_vidyVHHo/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “E[13:59:07.543] Indexing kernel/locking/rtmutex.c failed: Couldn’t build compiler instance\n”
[ ERROR ] 2020-10-22T13:59:07+0200 ] …ount_vidyVHHo/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “E[13:59:07.547] Indexing kernel/sched/wait_bit.c failed: Couldn’t build compiler instance\n”
[ ERROR ] 2020-10-22T13:59:07+0200 ] …ount_vidyVHHo/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “E[13:59:07.547] Indexing drivers/input/keyboard/adc-keys.mod.c failed: Couldn’t build compiler instance\n”
[ ERROR ] 2020-10-22T13:59:07+0200 ] …ount_vidyVHHo/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “E[13:59:07.564] Indexing net/bluetooth/af_bluetooth.c failed: Couldn’t build compiler instance\n”
[ ERROR ] 2020-10-22T13:59:07+0200 ] …ount_vidyVHHo/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “E[13:59:07.568] Indexing lib/syscall.c failed: Couldn’t build compiler instance\n”
[ ERROR ] 2020-10-22T13:59:07+0200 ] …ount_vidyVHHo/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “E[13:59:07.572] Indexing net/ipv6/route.c failed: Couldn’t build compiler instance\n”
[ ERROR ] 2020-10-22T13:59:07+0200 ] …ount_vidyVHHo/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “E[13:59:07.575] Indexing fs/ext2/super.c failed: Couldn’t build compiler instance\n”
[ ERROR ] 2020-10-22T13:59:

I’m using a compile_commands.json generated using the ./scripts/gen_compile_commands.py and it seems ok, here is an entry on which indexing fails:
{
“command”: “aarch64-poky-linux-gcc -Wp,-MD,arch/arm64/kvm/.regmap.o.d -nostdinc -isystem /home/seb/build/toolchains/zeus_5.4_aarch64/sysroots/x86_64-pokysdk-linux/usr/lib/aarch64-poky-linux/gcc/aarch64-poky-linux/9.2.0/include -I./arch/arm64/include -I./arch/arm64/include/generated -I./include -I./arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -D__KERNEL__ -mlittle-endian -DKASAN_SHADOW_SCALE_SHIFT=3 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -std=gnu89 -mgeneral-regs-only -DCONFIG_AS_LSE=1 -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -Wno-psabi -mabi=lp64 -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-frame-address -Wno-format-truncation -Wno-format-overflow -Wno-address-of-packed-member -O2 --param=allow-store-data-races=0 -Wframe-larger-than=2048 -fstack-protector-strong -Wno-unused-but-set-variable -Wimplicit-fallthrough -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-var-tracking-assignments -g -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wno-stringop-truncation -fno-strict-overflow -fno-merge-all-constants -fmerge-constants -fno-stack-check -fconserve-stack -Werror=date-time -Werror=incompatible-pointer-types -Werror=designated-init -fmacro-prefix-map=./= -Wno-packed-not-aligned --sysroot=/home/seb/build/toolchains/zeus_5.4_aarch64/sysroots/aarch64-poky-linux -mstack-protector-guard=sysreg -mstack-protector-guard-reg=sp_el0 -mstack-protector-guard-offset=1152 -I ./arch/arm64/kvm -I ./virt/kvm/arm/vgic -DKBUILD_BASENAME=‘"regmap"’ -DKBUILD_MODNAME=‘"kvm"’ -c -o arch/arm64/kvm/regmap.o arch/arm64/kvm/regmap.c”,
“directory”: “/home/seb/git/dn_industry_linux”,
“file”: “arch/arm64/kvm/regmap.c”
},

FYI, I use neovim with built-in LSP support. It works w/o issues in other cross-compiled projects but fails with linux kernel/yocto.

Thanks,
Seb

#2

Could you pass --log=verbose to clangd and paste the full log in here?

#3

Hi,
Here is the log (could not attached as new user on this forum…)
However using neovim lsp config, it seems the background indexing option is not working anymore when I added the verbose log.
local nvim_lsp = require’nvim_lsp’
nvim_lsp.clangd.setup{
cmd = {“clangd”, “–log=verbose”, “–background-index”};
}

[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “I[09:18:39.356] Enqueueing 0 commands for indexing\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “I[09:18:39.366] Updating file /home/seb/git/industry_linux/drivers/net/ethernet/freescale/fec_main.c with command inferred from drivers/net/ethernet/freescale/fec_main.c\n[/home/seb/git/dn_industry_linux]\naarch64-poky-linux-gcc -target aarch64-poky-linux -Wp,-MD,drivers/net/ethernet/freescale/.fec_main.o.d -nostdinc -isystem /home/seb/build/toolchains/zeus_5.4_aarch64/sysroots/x86_64-pokysdk-linux/usr/lib/aarch64-poky-linux/gcc/aarch64-poky-linux/9.2.0/include -I./arch/arm64/include -I./arch/arm64/include/generated -I./include -I./arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -D__KERNEL__ -mlittle-endian -DKASAN_SHADOW_SCALE_SHIFT=3 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -mgeneral-regs-only -DCONFIG_AS_LSE=1 -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -Wno-psabi -mabi=lp64 -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-frame-address -Wno-format-truncation -Wno-format-overflow -Wno-address-of-packed-member -O2 --param=allow-store-data-races=0 -Wframe-larger-than=2048 -fstack-protector-strong -Wno-unused-but-set-variable -Wimplicit-fallthrough -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-var-tracking-assignments -g -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wno-stringop-truncation -fno-strict-overflow -fno-merge-all-constants -fmerge-constants -fno-stack-check -fconserve-stack -Werror=date-time -Werror=incompatible-pointer-types -Werror=designated-init -fmacro-prefix-map=./= -Wno-packed-not-aligned --sysroot=/home/seb/build/toolchains/zeus_5.4_aarch64/sysroots/aarch64-poky-linux -mstack-protector-guard=sysreg -mstack-protector-guard-reg=sp_el0 -mstack-protector-guard-offset=1152 -DKBUILD_BASENAME="fec_main" -DKBUILD_MODNAME="fec" -c -std=gnu89 /home/seb/git/industry_linux/drivers/net/ethernet/freescale/fec_main.c -fsyntax-only -resource-dir=/usr/lib/llvm-10/lib/clang/10.0.0\nI[09:18:39.366] Couldn’t set working directory when creating compiler invocation.\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.395] Ignored diagnostic. optimization flag ‘-fmerge-constants’ is not supported\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” ‘V[09:18:39.395] Driver produced command: cc1 -cc1 -triple aarch64-poky-linux -fsyntax-only -disable-free -disable-llvm-verifier -discard-value-names -main-file-name fec_main.c -mrelocation-model static -mthread-model posix -fno-delete-null-pointer-checks -mllvm -warn-stack-size=2048 -mframe-pointer=non-leaf -relaxed-aliasing -mdisable-tail-calls -fmath-errno -fno-rounding-math -masm-verbose -mconstructor-aliases -target-cpu generic -target-feature -fp-armv8 -target-feature -crypto -target-feature -neon -target-feature -sha2 -target-feature -aes -target-abi lp64 -fallow-half-arguments-and-returns -dwarf-column-info -fno-split-dwarf-inlining -debug-info-kind=limited -dwarf-version=4 -debugger-tuning=gdb -nostdsysteminc -nobuiltininc -resource-dir /usr/lib/llvm-10/lib/clang/10.0.0 -dependency-file drivers/net/ethernet/freescale/.fec_main.o.d -MT fec_main.o -sys-header-deps -isystem /home/seb/build/toolchains/zeus_5.4_aarch64/sysroots/x86_64-pokysdk-linux/usr/lib/aarch64-poky-linux/gcc/aarch64-poky-linux/9.2.0/include -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -I ./arch/arm64/include -I ./arch/arm64/include/generated -I ./include -I ./arch/arm64/include/uapi -I ./arch/arm64/include/generated/uapi -I ./include/uapi -I ./include/generated/uapi -D KERNEL -D KASAN_SHADOW_SCALE_SHIFT=3 -D CONFIG_AS_LSE=1 -D CONFIG_CC_HAS_K_CONSTRAINT=1 -D KASAN_SHADOW_SCALE_SHIFT=3 -D KBUILD_BASENAME=“fec_main” -D KBUILD_MODNAME=“fec” -isysroot /home/seb/build/toolchains/zeus_5.4_aarch64/sysroots/aarch64-poky-linux -fmacro-prefix-map=./= -O2 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -Wno-psabi -Wno-frame-address -Wno-format-truncation -Wno-format-overflow -Wno-address-of-packed-member -Wno-unused-but-set-variable -Wimplicit-fallthrough -Wno-unused-const-variable -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wno-stringop-truncation -Werror=date-time -Werror=incompatible-pointer-types -Werror=designated-init -Wno-packed-not-aligned -std=gnu89 -fdebug-compilation-dir /home/seb/git/industry_linux -ferror-limit 19 -fmessage-length 0 -fwrapv -stack-protector 2 -fno-signed-char -fwchar-type=short -fno-signed-wchar -fgnuc-version=4.2.1 -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -faddrsig -x c /home/seb/git/industry_linux/drivers/net/ethernet/freescale/fec_main.c\n’
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.395] Building first preamble for /home/seb/git/industry_linux/drivers/net/ethernet/freescale/fec_main.c\nV[09:18:39.396] Ignored diagnostic. unknown warning option ‘-Wno-psabi’\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.396] Ignored diagnostic. unknown warning option ‘-Wno-frame-address’; did you mean ‘-Wno-address’?\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.397] Ignored diagnostic. unknown warning option ‘-Wno-format-truncation’\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.397] Ignored diagnostic. unknown warning option ‘-Wno-format-overflow’; did you mean ‘-Wno-shift-overflow’?\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.399] Ignored diagnostic. unknown warning option ‘-Wno-unused-but-set-variable’; did you mean ‘-Wno-unused-const-variable’?\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.400] Ignored diagnostic. unknown warning option ‘-Wno-stringop-truncation’; did you mean ‘-Wno-string-conversion’?\nV[09:18:39.401] Ignored diagnostic. unknown warning option ‘-Werror=designated-init’; did you mean ‘-Werror=deprecated-copy’?\nV[09:18:39.402] Ignored diagnostic. unknown warning option ‘-Wno-packed-not-aligned’; did you mean ‘-Wno-over-aligned’?\nI[09:18:39.402] Couldn’t set working directory when building the preamble.\nE[09:18:39.402] Could not build a preamble for file /home/seb/git/industry_linux/drivers/net/ethernet/freescale/fec_main.c\nI[09:18:39.403] Couldn’t set working directory when building the preamble.\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.403] Ignored diagnostic. unknown warning option ‘-Wno-psabi’\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.403] Ignored diagnostic. unknown warning option ‘-Wno-frame-address’; did you mean ‘-Wno-address’?\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.404] Ignored diagnostic. unknown warning option ‘-Wno-format-truncation’\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.405] Ignored diagnostic. unknown warning option ‘-Wno-format-overflow’; did you mean ‘-Wno-shift-overflow’?\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.406] Ignored diagnostic. unknown warning option ‘-Wno-unused-but-set-variable’; did you mean ‘-Wno-unused-const-variable’?\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.407] Ignored diagnostic. unknown warning option ‘-Wno-stringop-truncation’; did you mean ‘-Wno-string-conversion’?\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.408] Ignored diagnostic. unknown warning option ‘-Werror=designated-init’; did you mean ‘-Werror=deprecated-copy’?\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.409] Ignored diagnostic. unknown warning option ‘-Wno-packed-not-aligned’; did you mean ‘-Wno-over-aligned’?\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “I[09:18:39.409] → textDocument/publishDiagnostics\n”
[ ERROR ] 2020-10-23T09:18:39+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “V[09:18:39.409] >>> {"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"diagnostics":[{"code":"drv_unknown_argument","message":"Unknown argument: ‘-fno-var-tracking-assignments’","range":{"end":{"character":0,"line":0},"start":{"character":0,"line":0}},"severity":1,"source":"clang"},{"code":"drv_unknown_argument","message":"Unknown argument: ‘-fconserve-stack’","range":{"end":{"character":0,"line":0},"start":{"character":0,"line":0}},"severity":1,"source":"clang"},{"code":"drv_unknown_argument","message":"Unknown argument: ‘-mstack-protector-guard=sysreg’","range":{"end":{"character":0,"line":0},"start":{"character":0,"line":0}},"severity":1,"source":"clang"},{"code":"drv_unknown_argument","message":"Unknown argument: ‘-mstack-protector-guard-reg=sp_el0’","range":{"end":{"character":0,"line":0},"start":{"character":0,"line":0}},"severity":1,"source":"clang"},{"code":"drv_unknown_argument","message":"Unknown argument: ‘-mstack-protector-guard-offset=1152’","range":{"end":{"character":0,"line":0},"start":{"character":0,"line":0}},"severity":1,"source":"clang"}],"uri":"file:///home/seb/git/industry_linux/drivers/net/ethernet/freescale/fec_main.c"}}\n\n”
[ ERROR ] 2020-10-23T09:18:58+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” ‘V[09:18:58.841] <<< {“id”:2,“jsonrpc”:“2.0”,“method”:“shutdown”}\n\n’
[ ERROR ] 2020-10-23T09:18:58+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” ‘I[09:18:58.841] ← shutdown(2)\nI[09:18:58.841] → reply:shutdown(2) 0 ms\nV[09:18:58.841] >>> {“id”:2,“jsonrpc”:“2.0”,“result”:null}\n\n’
[ ERROR ] 2020-10-23T09:18:58+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” ‘V[09:18:58.842] <<< {“jsonrpc”:“2.0”,“method”:“exit”}\n\nI[09:18:58.842] ← exit\n’
[ ERROR ] 2020-10-23T09:18:58+0200 ] …ount_viIGEyZK/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “I[09:18:58.842] LSP finished, exiting with status 0\n”
#4

The problem seems to be originating from:

I[09:18:39.402] Couldn’t set working directory when building the preamble.
E[09:18:39.402] Could not build a preamble for file /home/seb/git/industry_linux/drivers/net/ethernet/freescale/fec_main.c
I[09:18:39.403] Couldn’t set working directory when building the preamble.

Are you using a compile_commands.json that was generated for your project, on that specific computer? Because compile_commands.json is path sensitive. So if you generate it for a check-out of a project on a separate directory, or different machine, they might not work.
Could you attach some entries from your compile_commands.json? Specifically the one for /home/seb/git/industry_linux/drivers/net/ethernet/freescale/fec_main.c would be even better.

The working directory mentioned in the compile_commands.json is likely /home/seb/git/dn_industry_linux whereas project root is at /home/seb/git/industry_linux, hence the discrepency.

Regarding the “I[09:18:39.356] Enqueueing 0 commands for indexing\n”, I need full logs, these are missing lots of important context from the top of the log file (you can still drop the one log line for textDocument/didOpen, which contains the source code information). In addition to that it would also be great if you can tell how the project layout looks like. Specifically the directories you have a compile_flags/compile_commands.

#5

Hi,

Sorry the previous logs were not meaningful, I forgot the re-generate the kernel build and I run the kernel scripts on a wrongly configured build. That’s why the indexer wasn’t working anymore.

Here are cleaner logs.
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[ ERROR ] 2020-10-23T13:53:24+0200 ] …ount_viTTkW9A/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “I[13:53:24.079] clangd version 10.0.0-4ubuntu1 \nI[13:53:24.079] PID: 122232\nI[13:53:24.079] Working directory: /home/seb/git/industry_linux\nI[13:53:24.079] argv[0]: clangd\nI[13:53:24.079] argv[1]: --log=verbose\nI[13:53:24.079] argv[2]: --background-index\nI[13:53:24.079] argv[3]: --query-driver=/home/seb/build/toolchains/**/bin/arm-none-eabi-, /home/seb/build/toolchains/_aarch64/sysroots/x86_64-pokysdk-linux/usr/bin/aarch64-poky-linux/aarch64-poky-linux-*\nI[13:53:24.079] Starting LSP over stdin/stdout\n”
[ ERROR ] 2020-10-23T13:53:24+0200 ] …ount_viTTkW9A/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” ‘V[13:53:24.084] <<< {“id”:1,“jsonrpc”:“2.0”,“method”:“initialize”,“params”:{“capabilities”:{“offsetEncoding”:[“utf-8”,“utf-16”],“textDocument”:{“completion”:{“editsNearCursor”:true}},“workspace”:{“configuration”:true}},“initializationOptions”:{},“processId”:122176,“rootPath”:“/home/seb/git/industry_linux”,“rootUri”:“file:///home/seb/git/industry_linux”,“trace”:“off”}}\n\n’
[ ERROR ] 2020-10-23T13:53:24+0200 ] …ount_viTTkW9A/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” “I[13:53:24.084] ← initialize(1)\n”
[ ERROR ] 2020-10-23T13:53:24+0200 ] …ount_viTTkW9A/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” ‘I[13:53:24.085] → reply:initialize(1) 1 ms\nV[13:53:24.085] >>> {“id”:1,“jsonrpc”:“2.0”,“result”:{“capabilities”:{“codeActionProvider”:true,“completionProvider”:{“resolveProvider”:false,“triggerCharacters”:[“.”,“>”,“:”]},“declarationProvider”:true,“definitionProvider”:true,“documentFormattingProvider”:true,“documentHighlightProvider”:true,“documentLinkProvider”:{“resolveProvider”:false},“documentOnTypeFormattingProvider”:{“firstTriggerCharacter”:“\n”,“moreTriggerCharacter”:},“documentRangeFormattingProvider”:true,“documentSymbolProvider”:true,“executeCommandProvider”:{“commands”:[“clangd.applyFix”,“clangd.applyTweak”]},“hoverProvider”:true,“referencesProvider”:true,“renameProvider”:true,“selectionRangeProvider”:true,“signatureHelpProvider”:{“triggerCharacters”:[“(”,“,”]},“textDocumentSync”:2,“typeHierarchyProvider”:true,“workspaceSymbolProvider”:true},“offsetEncoding”:“utf-8”}}\n\n’

[ ERROR ] 2020-10-23T13:53:24+0200 ] …ount_viTTkW9A/usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:428 ] “rpc” “clangd” “stderr” 'V[13:53:24.152] System include extraction: not whitelisted driver /home/seb/git/industry_linux/aarch64-poky-linux-gcc

This doesn’t seem good, this is not the path of the toolchain. The toolchain is in /home/seb/build/toolchains/*_aarch64/ which is in the PATH variable where I run neovim.
The compile_commands.json doesn’t contain the full toolchain path as the compiler is called w/o any path.

After that the indexer scan keeps failing with messages like:
[13:53:24.154] Failed to load shard: /home/seb/git/industry_linux/drivers/acpi/container.c

Thanks,
Seb

#6 
Here is the additional information you asked:

Compile command for fec_main.c
  {
    "command": "aarch64-poky-linux-gcc -Wp,-MD,drivers/net/ethernet/freescale/.fec_main.o.d  -nostdinc -isystem /home/seb/build/toolchains/zeus_5.4_aarch64/sysroots/x86_64-pokysdk-linux/usr/lib/aarch64-poky-linux/gcc/aarch64-poky-linux/9.2.0/include -I./arch/arm64/include -I./arch/arm64/include/generated  -I./include -I./arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -D__KERNEL__ -mlittle-endian -DKASAN_SHADOW_SCALE_SHIFT=3 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -std=gnu89 -mgeneral-regs-only -DCONFIG_AS_LSE=1 -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -Wno-psabi -mabi=lp64 -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-frame-address -Wno-format-truncation -Wno-format-overflow -Wno-address-of-packed-member -O2 --param=allow-store-data-races=0 -Wframe-larger-than=2048 -fstack-protector-strong -Wno-unused-but-set-variable -Wimplicit-fallthrough -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-var-tracking-assignments -g -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wno-stringop-truncation -fno-strict-overflow -fno-merge-all-constants -fmerge-constants -fno-stack-check -fconserve-stack -Werror=date-time -Werror=incompatible-pointer-types -Werror=designated-init -fmacro-prefix-map=./= -Wno-packed-not-aligned --sysroot=/home/seb/build/toolchains/zeus_5.4_aarch64/sysroots/aarch64-poky-linux -mstack-protector-guard=sysreg -mstack-protector-guard-reg=sp_el0 -mstack-protector-guard-offset=1152    -DKBUILD_BASENAME='\"fec_main\"' -DKBUILD_MODNAME='\"fec\"' -c -o drivers/net/ethernet/freescale/fec_main.o drivers/net/ethernet/freescale/fec_main.c", 
    "directory": "/home/seb/git/industry_linux", 
    "file": "drivers/net/ethernet/freescale/fec_main.c"
  }, 

The toolchain is located in /home/seb/build/toolchains/zeus_5.4_aarch64/sysroots/aarch64-poky-linux
The toolchain environment script, sets up the PATH with the toolchain location, and also the compiler environment variables (CC, CXX, etc...)

The sources are located in /home/seb/git/industry_linux where the compile_commands.json

Also if that can help, the project has some host code compiled with host gcc and these files were correctly indexed:
Compile command for one of these file:
  {
    "command": "gcc -Wp,-MD,scripts/dtc/.dtc.o.d -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89     -I ./scripts/dtc/libfdt -DNO_YAML  -c -o scripts/dtc/dtc.o scripts/dtc/dtc.c", 
    "directory": "/home/seb/git/industry_linux", 
    "file": "scripts/dtc/dtc.c"
  }, 

Also if that may help as well:
LSP client: NVIM v0.5.0-767-g0f590ae2a
Clangd version: 10.0.0-4ubuntu1

Thanks !
#7

Hi,

For now I switched to ccls and had no issue with various cross-compilation toolchains…
In addition the need to set query-driver is not very practical when using many different toolchains.
However, I’d be happy to help in debugging the problems I’m facing here.

#8

Hi, I have found the same issue with you, there are my resolution.
First, i try to update clangd to laster version (13.0.0), then I got detailed log

Failed to prepare a compile instance: unknown target ABI 'lp64'

it seem as clangd can’t understand lp64. Instead ‘lp64’ by ‘aapcs-linux’.in compile_command.json to fix it

#10

Here are a better resolution.
https://github.com/clangd/clangd/issues/734