glg at glg-virtual-machine:~/桌面/01$ make gcc -m32 -c multiboot.S -o multiboot.o dmd -c -m32 test.d object.d -defaultlib= -noboundscheck -release Error: no constructor for Error Error: no constructor for Error Makefile:2: recipe for target 'all' failed make: *** [all] Error 1 why?