build failed on ubuntu 20.04 kernel 5.4 with clang 10.

[cfc4n]

Describe the bug
build failed on ubuntu 20.04 kernel 5.4 with clang 10.

In file included from kern/openssl_1_1_1a_kern.c:45:
In file included from ./kern/openssl.h:1:
In file included from ./kern/ecapture.h:41:
In file included from /lib/modules/5.4.0-131-generic/build/include/uapi/linux/ptrace.h:143:
In file included from /lib/modules/5.4.0-131-generic/build/arch/x86/include/asm/ptrace.h:5:
/lib/modules/5.4.0-131-generic/build/arch/x86/include/asm/segment.h:266:2: error: expected '(' after 'asm'
        alternative_io ("lsl %[seg],%[p]",
        ^
/lib/modules/5.4.0-131-generic/build/arch/x86/include/asm/alternative.h:240:2: note: expanded from macro 'alternative_io'
        asm_inline volatile (ALTERNATIVE(oldinstr, newinstr, feature)   \
        ^
/lib/modules/5.4.0-131-generic/build/include/linux/compiler_types.h:214:24: note: expanded from macro 'asm_inline'
#define asm_inline asm __inline

To Reproduce
Steps to reproduce the behavior:

1. apt install clang llvm make
2. git clone
3. make nocore
4. See error

Expected behavior
build success.

Screenshots

Linux Server/Android (please complete the following information):

• Env: [run make env to get the environment variables]
• OS: [e.g. Ubuntu 20.04]
• Arch: [e.g. x86 64]
• Kernel Version: [e.g. 5.4]
• Version: [e.g. 0.4.7-master]

Additional context
Add any other context about the problem here.

ref:

• Missing support for asm_inline in Linux 5.4
• Redefine asm_inline for Linux 5.4+, Fixes
• asm __inline usage on newer kernels (5.10.x)
• Most BCC tools broken on Ubuntu 18.04 when running kernel 5.4 or above
• bcc-tools fail to compile on 5.4.7-200 kernel