SPRACM8A June 2019 – January 2021 OMAP-L132 , OMAP-L132 , OMAP-L138 , OMAP-L138 , TMS320C6742 , TMS320C6742 , TMS320C6746 , TMS320C6746 , TMS320C6748 , TMS320C6748
Since cl6x program (C6000 compiler) is a native Windows app, the build environment expects users to set Windows include and library search paths, therefore, set DSP_TOOLS_PATH using Cygwin path but DSP_LIB_PATH using Windows conventions. The Cygwin path will help your make setup find the compiler and the Windows library search path will enable the compiler find the RTS libraries.
For example:
DSP_TOOLS_PATH?=/cygdrive/c/ccsvx/tools/compiler/c6000/
DSP_LIB_PATH?="C:\ccsvx\tools\compiler\c6000\lib"