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Date: Fri, 23 May 2014 10:33:42 -0700 (PDT)
From: Don Lewis <truckman@FreeBSD.org>
Subject: Re: svn commit: r266587 - head/share/mk
To: imp@FreeBSD.org
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On 23 May, Warner Losh wrote:
> Author: imp
> Date: Fri May 23 14:34:22 2014
> New Revision: 266587
> URL: http://svnweb.freebsd.org/changeset/base/266587
> 
> Log:
>   Allow CC to not actually exist. During the ports INDEX run, all the
>   Makefiles are evaluated without building things. In a normal build,
>   the prerequisites would be built, and CC would be an actual thing. In
>   an INDEX build, though, they don't exists. Redirect stderr to get rid
>   of annoying messages, and assume that the compiler version is 0 if the
>   actual compiler can't tell us. Do this in preference to guessing based
>   on numbers because gcc410 might be 4.10, or 4.1.0 and without
>   carefully crafted special knowledge we differentiate between them
>   easily (also ming-gcc has no clues at all). Elsewhere, don't trust
>   the compiler version if it is 0.
> 
> Modified:
>   head/share/mk/bsd.compiler.mk
> 
> Modified: head/share/mk/bsd.compiler.mk
> ==============================================================================
> --- head/share/mk/bsd.compiler.mk	Fri May 23 14:32:57 2014	(r266586)
> +++ head/share/mk/bsd.compiler.mk	Fri May 23 14:34:22 2014	(r266587)
> @@ -21,11 +21,11 @@
>  .if !target(__<bsd.compiler.mk>__)
>  __<bsd.compiler.mk>__:
>  
> -_v!=	${CC} --version
> +_v!=	${CC} --version 2>/dev/null || echo 0.0.0
>  .if !defined(COMPILER_TYPE)
> -. if ${CC:T:Mgcc*}
> +. if ${CC:T:M*gcc*}
>  COMPILER_TYPE:=	gcc  
> -. elif ${CC:T:Mclang}
> +. elif ${CC:T:M*clang*}
>  COMPILER_TYPE:=	clang
>  . elif ${_v:Mgcc}
>  COMPILER_TYPE:=	gcc
> 

Thanks!