(                 ^
In file included from ./config.h:54:0,
                 from tools/random.cc:40:
./autoconf.h:95:30: error: expected namespace-name before ‘;’ token
 using namespace CPP_NAMESPACE;
                              ^
Makefile:90: recipe for target 'tools/random.o' failed
make: *** [tools/random.o] Error 1
)