This problem is generally caused by compiling under Windows, but Cygwin is not installed, or the paths of BOAT_RM, BOAT_MKDIR, and BOAT_FIND are not correctly configured in the Makefile. Please refer to section Use Windows as Compiler Environment to install Cygwin and configure Makefile.
https://github.com/aitos-io/BoAT-X-Framework/blob/master/demo/README_en.md#Use-Windows-as-Compiler-Environment
This problem is generally caused by compiling under Windows, but Cygwin is not installed, or the paths of BOAT_RM, BOAT_MKDIR, and BOAT_FIND are not correctly configured in the Makefile. Please refer to section Use Windows as Compiler Environment to install Cygwin and configure Makefile.