我已经安装了glib zlib libtool但仍然会出现Disabling libtool due to broken toolchain support的提示，虽然并不影响qemu的安装，但安装完后再qemu上加载x86系统时总是会出现
Error: Couldn't find a working QEMU executable.
*** Is the directory containing the qemu binary in your PATH
*** or have you tried setting the QEMU variable in conf/env.mk?
/bin/sh: 1: -nographic: not found
hda obj/kern/kernel.img -serial mon:stdio -gdb tcp::26000
make: hda: Command not found
GNUmakefile:156: recipe for target 'qemu' failed
make: [qemu] Error 127 (ignored)
