Compilation error with kernel 4.13.0-38-generic: fatal error: asm/msr-index.h: No such file or directory

[dipanjan]

As Linux kernel has stopped exporting asm/msr-index.h to user-land starting kernel version 4.12-rc1 , the build (branch: sgx2, commit dc5858aa1a67d80e525440968366d29e1c44b892) fails with the following error message: fatal error: asm/msr-index.h: No such file or directory

The build system configuration is as follows:

$ uname -r
4.13.0-38-generic

$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.4 LTS"

[sergeay]

It says: "x86: stop exporting msr-index.h to userland"

my Ubuntu 16.04 has the following:
$ uname -r
4.13.0-43-generic

and msr-index.h is at:
$ sudo find / -name 'msr-index.h'
/usr/src/linux-headers-4.13.0-43/arch/x86/include/asm/msr-index.h

And the driver compilation works fine

[dipanjan]

Extremely sorry. My host had ARCH and CROSS_COMPILE environment variables wrongly set from a previous kernel build. Closing this issue.