Got it!! rm -f CMakeCache.txt; rm -rf CMakeFiles; export CFLAGS="-O0 -v"; export CXXFLAGS="-O0 -v"; export LDFLAGS="-Wl,--unresolved-symbols=ignore-all"; eatmydata -- cmake -DCMAKE_BUILD_TYPE="Release" > /dev/null 2>&1; eatmydata -- make clean > /dev/null 2>&1; eatmydata -- make -w -r -j4;