[cfe-dev] svn update then make gives cc1 error: unrecognized command line option '-Wcovered-switch-default'

[Larry Evans]

I just ran svn update:

~/download/llvm/svn/llvm $ svn update
~/download/llvm/svn/llvm/tools/clang $ svn update
~/download/llvm/svn/llvm/tools $ svn co
http://llvm.org/svn/llvm-project/clang-tools-extra/trunk extra
~/download/llvm/svn/llvm/projects/compiler-rt $ svn update

However, make resulted in:

.
.
.
llvm[1]: Compiling regexec.c for Debug+Asserts build
cc1: error: unrecognized command line option "-Wcovered-switch-default"
/bin/rm: cannot remove
`/home/evansl/download/llvm/svn/build/lib/Support/Debug+Asserts/regexec.d.tmp':
No such file or directory
make[1]: ***
[/home/evansl/download/llvm/svn/build/lib/Support/Debug+Asserts/regexec.o]
Error 1
make[1]: Leaving directory
`/home/evansl/download/llvm/svn/build/lib/Support'
make: *** [all] Error 1
~/download/llvm/svn/build $

How can this be corrected?

My system is:

uname -a
Linux evansl-desktop 2.6.32-41-generic #90-Ubuntu SMP Tue May 22
11:29:51 UTC 2012 x86_64 GNU/Linux

TIA.

-regards,
Larry