title: Issue regarding CMake Error: No source given to target
body: <p>I am trying to add FreeRtos to a project of mine using cmake and eclipse but I am getting an error. I am running debian 10 and my cmake version is 3.13.4. The files for cmake can be found at <a href="https://github.com/kryochronic/AM335X-FreeRTOS-lwip" rel="nofollow noreferrer">this git repo</a>. When I run the following command:</p>
  <pre><code>frank@debian:~/temp2/build$ cmake ../../temp2/AM335X-FreeRTOS-lwip/ -G&quot;Eclipse CDT4 - Unix Makefiles&quot;
  </code></pre>
  <p>I get the following error:</p>
  <pre><code>    CMake Error at ProjectIncludes.cmake:46 (add_library):
    No SOURCES given to target: lib_third_party_ti_platform_beaglebone
  Call Stack (most recent call first):
    CMakeLists.txt:33 (include)
  
  
  CMake Error at ProjectIncludes.cmake:30 (add_library):
    No SOURCES given to target: lib_third_party_ti_utils
  Call Stack (most recent call first):
    CMakeLists.txt:33 (include)
  
  
  CMake Error at ProjectIncludes.cmake:38 (add_library):
    No SOURCES given to target: lib_third_party_ti_mmcsdlib
  Call Stack (most recent call first):
    CMakeLists.txt:33 (include)
  
  
  CMake Error at ProjectIncludes.cmake:54 (add_library):
    No SOURCES given to target: lib_third_party_ti_nandlib
  Call Stack (most recent call first):
    CMakeLists.txt:33 (include)
  
  
  CMake Error at CMakeLists.txt:15 (add_executable):
    No SOURCES given to target: freeRTOSBBB.elf
  
  
  CMake Error at ProjectIncludes.cmake:23 (add_library):
    No SOURCES given to target: lib_third_party_ti_drivers
  Call Stack (most recent call first):
    CMakeLists.txt:33 (include)
  
  
  CMake Error at ProjectIncludes.cmake:115 (add_library):
    No SOURCES given to target:
    lib_third_party_amazon_freertos_kernel_portable_MemMang
  Call Stack (most recent call first):
    CMakeLists.txt:33 (include)
  
  
  CMake Error at ProjectIncludes.cmake:86 (add_library):
    No SOURCES given to target:
    lib_third_party_amazon_libraries_3rdparty_lwip_src
  Call Stack (most recent call first):
    CMakeLists.txt:33 (include)
  
  
  CMake Error at ProjectIncludes.cmake:101 (add_library):
    No SOURCES given to target: src_portable_lwip_ports_cpsw_netif
  Call Stack (most recent call first):
    CMakeLists.txt:33 (include)
  
  
  CMake Error at ProjectIncludes.cmake:106 (add_library):
    No SOURCES given to target: lib_third_party_amazon_freertos_kernel
  Call Stack (most recent call first):
    CMakeLists.txt:33 (include)
  
  
  CMake Error at ProjectIncludes.cmake:111 (add_library):
    No SOURCES given to target:
    src_portable_FreeRTOS_portable_GCC_ARM_CA8_amm335x
  Call Stack (most recent call first):
    CMakeLists.txt:33 (include)
  
  
  CMake Error at ProjectIncludes.cmake:65 (add_library):
    No SOURCES given to target: lib_third_party_ti_system_config_armv7a
  Call Stack (most recent call first):
    CMakeLists.txt:33 (include)
  
  
  CMake Error at ProjectIncludes.cmake:134 (add_library):
    No SOURCES given to target: src_application
  Call Stack (most recent call first):
    CMakeLists.txt:33 (include)
  
  
  CMake Error at ProjectIncludes.cmake:120 (add_library):
    No SOURCES given to target: src_portable_AM335X
  Call Stack (most recent call first):
    CMakeLists.txt:33 (include)
  
  
  CMake Error at ProjectIncludes.cmake:129 (add_library):
    No SOURCES given to target: src_portable_ported_aws_bufpool
  Call Stack (most recent call first):
    CMakeLists.txt:33 (include)
  </code></pre>