CH32V307EVT(ver1.9)例程tcpServer build失败怎么解决？

build ETH目录下TCP、UDP的SERVER及CLIENT例程，出现：
make -j8 all
c:/mounriver/mounriver_studio/toolchain/build tools/bin/sh: syntax error: unexpected "("
make: *** [makefile:56: TcpClient.elf] Error 2
而其他RTC、GPIO_Toggle等例程build成功
怎么解决