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From: John Baldwin <jhb@freebsd.org>
To: Dimitry Andric <dim@freebsd.org>
Date: Thu, 1 Mar 2012 14:34:12 -0500
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Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org,
	src-committers@freebsd.org
Subject: Re: svn commit: r232322 - in head: . gnu/usr.bin/cc/c++
	gnu/usr.bin/cc/cc gnu/usr.bin/cc/cpp share/mk sys/conf
	tools/build/options usr.bin/clang/clang
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On Wednesday, February 29, 2012 5:58:52 pm Dimitry Andric wrote:
> Author: dim
> Date: Wed Feb 29 22:58:51 2012
> New Revision: 232322
> URL: http://svn.freebsd.org/changeset/base/232322
> 
> Log:
>   Add a WITH_CLANG_IS_CC option for src.conf(5), disabled by default, that
>   installs clang as /usr/bin/cc, /usr/bin/c++ and /usr/bin/cpp.
>   
>   Note this does *not* disable building and installing gcc, which will
>   still be available as /usr/bin/gcc, /usr/bin/g++ and /usr/bin/gcpp.  If
>   you want to disable gcc completely, you must use WITHOUT_GCC.
>   
>   MFC after:	2 weeks

This seems to have broken the ability to build world on older machines.  
Specifically, I have a little netbook whose last world was from May 2011 and 
when I tried to do a buildworld today, it blew up with this trying to do a 
build:

> make buildworld
"/usr/src/Makefile.inc1", line 1111: Malformed conditional (${MK_GCC} != "no" 
&& (${MK_CLANG_IS_CC} == "no" && ${CC:T:Mclang} != "clang"))
"/usr/src/Makefile.inc1", line 1113: if-less endif
"/usr/src/Makefile.inc1", line 1173: Malformed conditional (${MK_CLANG} != 
"no" && (${MK_CLANG_IS_CC} != "no" || ${CC:T:Mclang} == "clang"))
"/usr/src/Makefile.inc1", line 1176: if-less endif
"/usr/src/Makefile.inc1", line 1178: Malformed conditional (${MK_GCC} != "no" 
&& (${MK_CLANG_IS_CC} == "no" && ${CC:T:Mclang} != "clang"))
"/usr/src/Makefile.inc1", line 1180: if-less endif
"/usr/src/Makefile.inc1", line 1241: Malformed conditional (${MK_LIBCPLUSPLUS} 
!= "no")
"/usr/src/Makefile.inc1", line 1243: if-less endif
make: fatal errors encountered -- cannot continue
*** Error code 1

Stop in /usr/src.

-- 
John Baldwin