在编译arm64 Linux 内核驱动模块时出错，请大佬帮忙看看

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[ 60%]: cache compiling.release src/main.mod.c
/home/vagrant/RK3588S/prebuilts/gcc/linux-x86/aarch64/gcc-arm-10.3-2021.07-x86_64-aarch64-none-linux-gnu/bin/aarch64-rockchip1031-linux-gnu-gcc -c -std=gnu89 -DARM64_ASM_ARCH=\"armv8.5-a\" -DKBUILD_MODNAME=\"main\" -isystem /home/vagrant/RK3588S/prebuilts/gcc/linux-x86/aarch64/gcc-arm-10.3-2021.07-x86_64-aarch64-none-linux-gnu/bin/../lib/gcc/aarch64-none-linux-gnu/10.3.1/include -I/home/vagrant/RK3588S/kernel/arch/arm64/include -I/home/vagrant/RK3588S/kernel/arch/arm64/include/generated -I/home/vagrant/RK3588S/kernel/include -I/home/vagrant/RK3588S/kernel/arch/arm64/include/uapi -I/home/vagrant/RK3588S/kernel/arch/arm64/include/generated/uapi -I/home/vagrant/RK3588S/kernel/include/uapi -I/home/vagrant/RK3588S/kernel/include/generated/uapi -include /home/vagrant/RK3588S/kernel/include/linux/kconfig.h -include /home/vagrant/RK3588S/kernel/include/linux/compiler_types.h -D__KERNEL__ -mlittle-endian -DCC_USING_PATCHABLE_FUNCTION_ENTRY -DKASAN_SHADOW_SCALE_SHIFT= -fmacro-prefix-map=./= -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -mgeneral-regs-only -DCONFIG_CC_HAS_K_CONSTRAINT=1 -Wno-psabi -mabi=lp64 -fno-asynchronous-unwind-tables -fno-unwind-tables -mbranch-protection=pac-ret+leaf+bti -Wa,-march=armv8.5-a -DARM64_ASM_ARCH='\"armv8.5-a\"' -fno-delete-null-pointer-checks -Wno-frame-address -Wno-format-truncation -Wno-format-overflow -Wno-address-of-packed-member -fno-allow-store-data-races -Wframe-larger-than=2048 -fstack-protector-strong -Wimplicit-fallthrough -Wno-unused-but-set-variable -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -fpatchable-function-entry=2 -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wno-stringop-truncation -Wno-zero-length-bounds -Wno-array-bounds -Wno-stringop-overflow -Wno-restrict -Wno-maybe-uninitialized -fno-strict-overflow -fno-stack-check -fconserve-stack -Werror=date-time -Werror=incompatible-pointer-types -Werror=designated-init -Wno-packed-not-aligned -mstack-protector-guard=sysreg -mstack-protector-guard-reg=sp_el0 -mstack-protector-guard-offset=1280 -DMODULE -DKBUILD_BASENAME=\"main.mod\" -o build/.objs/main/cross/arm64/release/src/main.mod.c.o src/main.mod.c
error: <command-line>: warning: "ARM64_ASM_ARCH" redefined
<command-line>: note: this is the location of the previous definition
In file included from /home/vagrant/RK3588S/kernel/arch/arm64/include/asm/kasan.h:9,
                 from /home/vagrant/RK3588S/kernel/arch/arm64/include/asm/processor.h:43,
                 from /home/vagrant/RK3588S/kernel/include/linux/rcupdate.h:30,
                 from /home/vagrant/RK3588S/kernel/include/linux/rculist.h:11,
                 from /home/vagrant/RK3588S/kernel/include/linux/pid.h:5,
                 from /home/vagrant/RK3588S/kernel/include/linux/sched.h:14,
                 from /home/vagrant/RK3588S/kernel/arch/arm64/include/asm/compat.h:16,
                 from /home/vagrant/RK3588S/kernel/arch/arm64/include/asm/stat.h:13,
                 from /home/vagrant/RK3588S/kernel/include/linux/stat.h:6,
                 from /home/vagrant/RK3588S/kernel/include/linux/module.h:13,
                 from src/main.c:2:
/home/vagrant/RK3588S/kernel/arch/arm64/include/asm/mte-kasan.h: In function ‘mte_get_mem_tag’:
/home/vagrant/RK3588S/kernel/arch/arm64/include/asm/mte-kasan.h:34:6: warning: character constant too long for its type
   34 |  asm(__MTE_PREAMBLE "ldg %0, [%0]"
      |      ^~~~~~~~~~~~~~
<command-line>: error: expected ‘:’ or ‘)’ before '\x352d6122'
/home/vagrant/RK3588S/kernel/arch/arm64/include/asm/compiler.h:6:37: note: in expansion of macro ‘ARM64_ASM_ARCH’
    6 | #define ARM64_ASM_PREAMBLE ".arch " ARM64_ASM_ARCH "\n"
      |                                     ^~~~~~~~~~~~~~
/home/vagrant/RK3588S/kernel/arch/arm64/include/asm/mte-def.h:14:25: note: in expansion of macro ‘ARM64_ASM_PREAMBLE’
   14 | #define __MTE_PREAMBLE  ARM64_ASM_PREAMBLE ".arch_extension memtag\n"
      |                         ^~~~~~~~~~~~~~~~~~
/home/vagrant/RK3588S/kernel/arch/arm64/include/asm/mte-kasan.h:34:6: note: in expansion of macro ‘__MTE_PREAMBLE’
   34 |  asm(__MTE_PREAMBLE "ldg %0, [%0]"

在编译时出现如上错误，以下是我的xmake.lua

add_rules("platform.linux.driver")
target("main")
    set_languages("gnu89")
    add_defines(
        "ARM64_ASM_ARCH=\"armv8.5-a\""
    )
    set_values("linux.driver.linux-headers", "/home/vagrant/RK3588S/kernel")
    add_files("src/*.c")

我怀疑是自动生成的 -DARM64_ASM_ARCH='\"armv8.5-a\"' 的问题

// /home/vagrant/RK3588S/kernel/arch/arm64/include/asm/compiler.h
#ifdef ARM64_ASM_ARCH
#define ARM64_ASM_PREAMBLE ".arch " ARM64_ASM_ARCH "\n"
#else
#define ARM64_ASM_PREAMBLE
#endif

我尝试直接在源码中将 ARM64_ASM_ARCH 改为 字符串，编译通过。
我重复尝试添加一个 ARM64_ASM_ARCH=\"armv8.5-a\" 来覆盖自动生成的 ARM64_ASM_ARCH='\"armv8.5-a\"' 但 手动添加的宏出现在了前面。
请问大佬，有没有办法修改或覆盖自动生成的宏

[waruqi]

你可以调下这里，看下是不是提取时候，加了额外的双引号 或者转义导致。然后提个 pr 过来

xmake/xmake/rules/platform/linux/module/driver_modules.lua

Line 139 in 9efe9e3

cflag = "-D" .. macro

[StarryPortrait]

在此处

xmake/xmake/rules/platform/linux/module/driver_modules.lua

Line 120 in 9efe9e3

line = line:trim()

得到了
-DARM64_ASM_ARCH='"armv8.5-a"'，但在

xmake/xmake/rules/platform/linux/module/driver_modules.lua

Line 137 in 9efe9e3

local macro = cflag:match("%-D\"(.+)\"") -- -D"KBUILD_XXX=xxx"

处并为匹配成功，所以未进行单引号处理，处理单引号后正常

local macro1 = cflag:match("%-D(.+)='.+'") -- -DXXX='"xxx"'
local macro2 = cflag:match("%-D.+='(.+)'") -- -DXXX='"xxx"'
if macro1 and macro2 then
    cflag = "-D" ..macro1.."="..macro2
end

[waruqi]

再试试 #5975

[StarryPortrait]

请问我该如何更新脚本

[waruqi]

xmake update -s github:xmake-io/xmake#linux

[StarryPortrait]

多谢大佬

[waruqi]

可以了么

[StarryPortrait]

可以了，多谢大佬👍