X6818 编译Android文件系统 ./mk -s报错

长胡须的怪蜀黍

build/core/Makefile:34: warning: overriding commands for target `out/target/product/x6818/system/bin/pppd'
build/core/base_rules.mk:550: warning: ignoring old commands for target `out/target/product/x6818/system/bin/pppd'
build/core/Makefile:34: warning: overriding commands for target `out/target/product/x6818/system/lib/libstagefright_wfd.so'
build/core/base_rules.mk:550: warning: ignoring old commands for target `out/target/product/x6818/system/lib/libstagefright_wfd.so'
No private recovery resources for TARGET_DEVICE x6818
Install: out/host/linux-x86/bin/validatekeymaps
/bin/bash: out/host/linux-x86/bin/acp: No such file or directory
make: *** [out/host/linux-x86/bin/validatekeymaps] Error 127

#### make failed to build some targets (01:48 (mm:ss)) ####

怎么解决?