i am trying to compile the haiku. but later of try to compile the "build tools" thats i get. _muldi3 In file included from tconfig.h:5, from /home/skarm/src/buildtools/legacy/gcc/gcc/libgcc2.c:33: /home/skarm/src/buildtools/legacy/gcc/gcc/config/i386/xm-haiku.h:32: sys/wait.h: No existe el fichero ? directorio /home/skarm/src/buildtools/legacy/gcc/gcc/libgcc2.c:41: stdlib.h: No existe el fichero ? directorio /home/skarm/src/buildtools/legacy/gcc/gcc/libgcc2.c:42: unistd.h: No existe el fichero ? directorio make[1]: *** [libgcc2.a] Error 1 make[1]: se sale del directorio `/home/skarm/src/haiku/generated/cross-tools-build/gcc/gcc' make: *** [cross] Error 2 ERROR: Building gcc failed. what can i do? why i get that error? steps to follow? thanks for all congrats!