在安装libmraa 库的时候出的这个错误 求解

Checking connectivity… done.
Submodule path ‘doxyport’: checked out ‘db3e1a6eb8677d3166d90d82c3068689803ce547’
warning: unable to rmdir doxyport: Directory not empty
M doxygen2jsdoc
Note: checking out ‘70600dece4138b0c0dbaff42f57828f1559cd840’.

You are in ‘detached HEAD’ state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

git checkout -b

HEAD is now at 70600de… mraa: update to version 0.8.0
fatal: reference is not a tree: 9cc90b7976252b2d14b7956230c5870097e1f008
Unable to checkout ‘9cc90b7976252b2d14b7956230c5870097e1f008’ in submodule path ‘doxygen2jsdoc’
Makefile:51: recipe for target ‘/root/SDK/openwrt_widora/dl/libmraa-0.8.0-70600dece4138b0c0dbaff42f57828f1559cd840.tar.gz’ failed
make[3]: *** [/root/SDK/openwrt_widora/dl/libmraa-0.8.0-70600dece4138b0c0dbaff42f57828f1559cd840.tar.gz] Error 1
make[3]: Leaving directory ‘/root/SDK/openwrt_widora/feeds/packages/libs/libmraa’
package/Makefile:191: recipe for target ‘package/feeds/packages/libmraa/compile’ failed
make[2]: *** [package/feeds/packages/libmraa/compile] Error 2
make[2]: Leaving directory ‘/root/SDK/openwrt_widora’
package/Makefile:188: recipe for target ‘/root/SDK/openwrt_widora/staging_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/stamp/.package_compile’ failed
make[1]: *** [/root/SDK/openwrt_widora/staging_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/stamp/.package_compile] Error 2
make[1]: Leaving directory ‘/root/SDK/openwrt_widora’
/root/SDK/openwrt_widora/include/toplevel.mk:181: recipe for target ‘world’ failed
make: *** [world] Error 2

@lzhong5 https://github.com/tinalinux/dl

@hardware-newbie 在哪儿下载libmraa-0.8.0这个库呢,找遍了也找不到

人工下载libmraa-0.8.0这个库,放到dl文件夹中