libcpputils C ++库 初始化库 bdep init -C ~ /repos/c++/build2/build2builds/gcc-debug \ @gcc-debug cc config.cxx= " g++ -ggdb -Og " \ config.cxx.coptions= " -Wall -Wextra -Weffc++ -pedantic -pedantic-errors \ -fno-omit-frame-pointer -fsanitize=address -fsanitize=undefined \ " config.cxx.poptions= " -DDEBUG " \ config.bin.ar=gcc-ar config.bin.ranlib=gcc-ranlib \ config.cxx.loptions= " -fuse-ld=lld -fsa