scons -j12 --mute CC=/usr/local/bin/clang CXX=/usr/local/bin/clang++ CCFLAGS="-fsanitize-coverage=2" --opt=off --allocator=system --sanitize=address --variant-dir=asan mongod unittests
scons: Reading SConscript files ...
scons version: 2.3.4
python version: 2 7 4 'final' 0
Checking whether the C++ compiler works... yes
Checking whether the C compiler works... yes
Checking if C++ compiler "/usr/local/bin/clang++" is GCC... no
Checking if C++ compiler "/usr/local/bin/clang++" is clang... yes
Checking if C compiler "/usr/local/bin/clang" is clang... yes
Detected a x86_64 processor
Checking if target OS linux is supported by the toolchain yes
Checking if C compiler is clang 3.4 (or Apple XCode 5.1.1) or newer...no
Checking if C++ compiler is clang 3.4 (or Apple XCode 5.1.1) or newer...no
ERROR: Refusing to build with compiler that does not meet requirements
See /mnt/hdd/mongo-copy/build/scons/config.log for details