CCS/IWR6843ISK: compilation failure on DSS folder

Kevin,

Looking at your build output, you seem to be missing a bunch of compiler include paths. To give you a comparison, here is my build output for one of the source files (objectdetection.c) for the same 3D_people_count_68xx_dss project.
(My C6000 compiler version is different from yours but that is not relevant for this issue).

Building file: "C:/ti/mmwave_industrial_toolbox_4_4_0/labs/common/src/dpc/capon3d/src/objectdetection.c"
Invoking: C6000 Compiler
"C:/CCStudio_8.3.0.00009/ccsv8/tools/compiler/ti-cgt-c6000_8.3.3/bin/cl6x" -mv6740 --abi=eabi -O3 --opt_for_speed=3 --include_path="C:/workspaces/ccsv830/mmwave_workspace/3D_people_count_68xx_dss" --include_path="C:/workspaces/ccsv830/mmwave_workspace/3D_people_count_68xx_dss/dss" --include_path="C:/ti/mmwave_sdk_03_02_00_04/packages" --include_path="C:/ti/mmwave_sdk_03_02_00_04/packages/ti/demo/utils" --include_path="C:/ti/mathlib_c674x_3_1_2_1/packages" --include_path="C:/ti/dsplib_c64Px_3_4_0_0/packages" --include_path="C:/ti/dsplib_c64Px_3_4_0_0/packages/ti/dsplib/src/DSP_fft16x16_imre/c64P" --include_path="C:/ti/dsplib_c64Px_3_4_0_0/packages/ti/dsplib/src/DSP_fft32x32/c64P" --include_path="C:/ti/dsplib_c674x_3_4_0_0/packages" --include_path="C:/ti/mmwave_industrial_toolbox_4_4_0/labs" --include_path="C:/CCStudio_8.3.0.00009/ccsv8/tools/compiler/ti-cgt-c6000_8.3.3/include" --define=SOC_XWR68XX --define=SUBSYS_DSS --define=PLATFORMES2 --define=MMWAVE_L3RAM_NUM_BANK=6 --define=MMWAVE_SHMEM_TCMA_NUM_BANK=0 --define=MMWAVE_SHMEM_TCMB_NUM_BANK=0 --define=MMWAVE_SHMEM_BANK_SIZE=0x20000 --define=MMWAVE_L3_CODEMEM_SIZE=0x100 --define=DOWNLOAD_FROM_CCS --define=DebugP_ASSERT_ENABLED --define=_LITTLE_ENDIAN --define=OBJDET_NO_RANGE --define=GTRACK_3D --define=APP_RESOURCE_FILE='<'C:/ti/mmwave_industrial_toolbox_4_4_0/labs/people_counting/68xx_3D_people_counting/src/common/pcount3D_hwres.h'>' -g --gcc --diag_error=10015 --diag_warning=225 --diag_wrap=off --display_error_number --gen_func_subsections=on --obj_extension=.oe674 --preproc_with_compile --preproc_dependency="dss/objectdetection.d_raw" --obj_directory="dss" --cmd_file="configPkg/compiler.opt" "C:/ti/mmwave_industrial_toolbox_4_4_0/labs/common/src/dpc/capon3d/src/objectdetection.c"
Finished building: "C:/ti/mmwave_industrial_toolbox_4_4_0/labs/common/src/dpc/capon3d/src/objectdetection.c"

Did you import the project using the Resource Explorer in CCS?

Please check your project properties to see why those paths are missing. Perhaps the variables are not resolved properly to the correct paths. Also check that the mmWave SDK is enabled under Products tab.

Here are my project settings.