read jobs pipe: Is a directory. Stop

编译展讯 工程 sp9820a_refh10_native 时报错信息如下：

make[1]: Leaving directory `/rdsoft/zewenzhu/workspace/reliance_kaios_v1.0/sprdisk/buildroot'

==== build_rootfs done! ====

==== build_ltp ====

make[1]: Entering directory `/rdsoft/zewenzhu/workspace/reliance_kaios_v1.0/sprdisk/ltp'

aclocal -I m4

make[1]: *** read jobs pipe: Is a directory. Stop.

make[1]: *** Waiting for unfinished jobs....

make[1]: Leaving directory `/rdsoft/zewenzhu/workspace/reliance_kaios_v1.0/sprdisk/ltp'

sprdisk/utils/build.sh: line 101: ./configure: No such file or directory

Error: Failed to configure ltp!

make: *** [systemimage-sprdisk] Error 2

[0;31m#### make failed to build some targets (03:11 (mm:ss)) ####

一开始编译的时候 用的命令是 make -j24 2>&1 | tee build.log

后面改为 make 2>&1 | tee build.log 编译就ok了

怀疑编译环境应该还有问题 ， 可能指定线程后会有同步的问题，