[llvm-commits] Improved Covered Default Switch detection

Joe Abbey joe.abbey at gmail.com
Sun Nov 25 16:00:55 PST 2012


On Nov 25, 2012, at 6:49 PM, Eli Friedman <eli.friedman at gmail.com> wrote:

> On Sun, Nov 25, 2012 at 3:19 PM, Joe Abbey <jabbey at arxan.com> wrote:
>> If cmake happens to detect GCC for the C compiler and Clang for the C++
>> compiler, then a manual override of either the C compiler or
>> SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG is required.  This has been happening
>> on my Darwin build environments:
>> 
>> -- The C compiler identification is GNU 4.2.1
>> -- The CXX compiler identification is Clang 4.1.0
> 
> How did you end up in this situation?  Something has gone very wrong
> if the build system finds clang++ but not clang.
> 

I don't think I've done anything terribly unique.  

1) Install Xcode

2) Installing command-line tools

jabbeymbp:llvmCommit jabbey$ ls -l /usr/bin/gcc /usr/bin/g++ /usr/bin/c++ /usr/bin/cc
lrwxr-xr-x  1 root  wheel   7 Nov 20 01:16 /usr/bin/c++ -> clang++
lrwxr-xr-x  1 root  wheel   5 Nov 20 01:16 /usr/bin/cc -> clang
lrwxr-xr-x  1 root  wheel  12 Nov 20 01:17 /usr/bin/g++ -> llvm-g++-4.2
lrwxr-xr-x  1 root  wheel  12 Nov 20 01:17 /usr/bin/gcc -> llvm-gcc-4.2
jabbeymbp:llvmCommit jabbey$ xcode-select --print-path
/Applications/Xcode.app/Contents/Developer
jabbeymbp:llvmCommit jabbey$ cmake --version
cmake version 2.8.8

Is this not as expected?

Joe



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