Rtthread-studio编译报错

Rtthread-studio导入keil的工程，编译出现如下错误，都不知道从何处下手，请问如何解决？
d:/rt-threadstudio/platform/env_released/env/tools/buildtools/2.12-20190422-1053/bin/sh: syntax error: unexpected “(“
make: [newlibc/subdir.mk30 newlibc/libc.o] Error 2
make: Waiting for unfinished jobs….
d:/rt-threadstudio/platform/env_released/env/tools/buildtools/2.12-20190422-1053/bin/sh: syntax error: unexpected “(“
make: * [newlibc/subdir.mk32 newlibc/libc_syms.o] Error 2
“make -j2 all” terminated with exit code 2. Build might be incomplete.