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Date: Sun, 8 Apr 2018 16:53:09 -0700
From: bob prohaska <fbsd@www.zefox.net>
To: "Rodney W. Grimes" <freebsd-rwg@pdx.rh.CN85.dnsmgr.net>
Cc: freebsd-current@freebsd.org
Subject: Re: Module compiles looking in /usr/src when alternate src tree is
 in use
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On Sun, Apr 08, 2018 at 12:00:52PM -0700, Rodney W. Grimes wrote:
> I am having a compile time issue for a patched that compiled fine on my
> r329294 system, but now failes to compile with what looks like a wrong
> header being included.
> 
Might this be a cousin to the problem reported at
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227274 ?

In that kernel compile (on an RPi3) the compiler complains

In file included from /usr/src/sys/crypto/armv8/armv8_crypto_wrap.c:46:
In file included from /usr/lib/clang/6.0.0/include/arm_neon.h:31:
/usr/lib/clang/6.0.0/include/stdint.h:228:25: error: typedef redefinition with different types ('int16_t' (aka 'short') vs '__int_fast16_t' (aka 'int'))
typedef __int_least16_t int_fast16_t;

The reference to /usr/lib/clang/... seems a bit strange; isn't a major 
purpose of the kernel build procedure to minimize reliance on the
host system's (already-stale) software?

If the two problems are related, should the subject line on the bug
report be changed?

Thanks for reading,

bob prohaska