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

[Larry Evans]

On 10/05/12 13:32, Larry Evans wrote:
  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
SOLVED:

Changed Makefile.config to remove the COVERED_SWITCH_DEFAULT macro,
and now it's working:

  ~/download/llvm/svn/build $ cat Makefile.config|grep switch
  # -Wcovered-switch-default
  #COVERED_SWITCH_DEFAULT = -Wcovered-switch-default
  ~/download/llvm/svn/build $ make
  llvm[0]: Constructing LLVMBuild project information.
  make[1]: Entering directory
`/home/evansl/download/llvm/svn/build/lib/Support'
  llvm[1]: Compiling regexec.c for Debug+Asserts build
  llvm[1]: Compiling system_error.cpp for Debug+Asserts build
  llvm[1]: Building Debug+Asserts Archive Library libLLVMSupport.a

  .
  .
  .