function(compilerVersion)
  execute_process(COMMAND "${CMAKE_C_COMPILER}" -dumpversion
     OUTPUT_VARIABLE CVERSION
     ERROR_VARIABLE CVERSION
    )
  SET(COMPILERVERSION ${CVERSION} PARENT_SCOPE)
  #cmake_print_variables(CVERSION)
  #cmake_print_variables(CMAKE_C_COMPILER)
  #MESSAGE( STATUS "CMD_OUTPUT:" ${CVERSION})
endfunction()

function(compilerSpecificCompileOptions PROJECTNAME ROOT)

  # Add support for the type __fp16 even if there is no HW
  # support for it.
#  if (FLOAT16)
#  target_compile_options(${PROJECTNAME} PUBLIC "-mfp16-format=ieee")
#  endif()

#  if (FASTMATHCOMPUTATIONS)
#      target_compile_options(${PROJECTNAME} PUBLIC "-ffast-math")
#  endif()
  
#  if (HARDFP)
#    target_compile_options(${PROJECTNAME} PUBLIC "-mfloat-abi=hard")
#    target_link_options(${PROJECTNAME} PUBLIC "-mfloat-abi=hard")
#  endif()
  
  if (LITTLEENDIAN)
    target_compile_options(${PROJECTNAME} PUBLIC --endian little)
  endif()

  if (CORTEXM OR CORTEXR)
    target_compile_options(${PROJECTNAME} PUBLIC --thumb)
  endif()

  target_link_options(${PROJECTNAME} PUBLIC "--cpu=${ARM_CPU}")

  if (ARM_CPU STREQUAL "cortex-m55" )
     target_compile_options(${PROJECTNAME} PUBLIC --fpu=vfpv5_d16)
     target_link_options(${PROJECTNAME} PUBLIC --fpu=fpv5_d16)
  endif()

  if (ARM_CPU STREQUAL "cortex-m55+nomve.fp+nofp" )
     target_compile_options(${PROJECTNAME} PUBLIC "-march=armv8.1-m.main+dsp+fp.dp")
     target_compile_options(${PROJECTNAME} PUBLIC "-mfpu=fpv5_d16")
     target_link_options(${PROJECTNAME} PUBLIC "-mfpu=fpv5_d16")
  endif()
  

  if (ARM_CPU STREQUAL "cortex-m33" )
     target_compile_options(${PROJECTNAME} PUBLIC --fpu=fpv5_sp)
     target_link_options(${PROJECTNAME} PUBLIC --fpu=fpv5_sp)
  endif()

  if (ARM_CPU STREQUAL "cortex-m7" )
     target_compile_options(${PROJECTNAME} PUBLIC --fpu=fpv5_sp)
     target_link_options(${PROJECTNAME} PUBLIC --fpu=fpv5_sp)
  endif()

  if (ARM_CPU STREQUAL "cortex-m4" )
     target_compile_options(${PROJECTNAME} PUBLIC --fpu=fpv4_sp)
     target_link_options(${PROJECTNAME} PUBLIC --fpu=fpv4_sp)
  endif()

  #if (ARM_CPU STREQUAL "cortex-m0" )
  #   target_compile_options(${PROJECTNAME} PUBLIC "")
  #   target_link_options(${PROJECTNAME} PUBLIC "")
  #endif()
  
  if (ARM_CPU STREQUAL "cortex-a32" )
      if (NOT (NEON OR NEONEXPERIMENTAL))
        target_compile_options(${PROJECTNAME} PUBLIC --cpu=cortex-a32 --fpu=vfpv3_d16)
        target_link_options(${PROJECTNAME} PUBLIC --cpucortex-a32 --fpu=vfpv3_d16)
      endif()
  endif()
  
  if (ARM_CPU STREQUAL "cortex-a9" )
      if (NOT (NEON OR NEONEXPERIMENTAL))
        target_compile_options(${PROJECTNAME} PUBLIC "-march=armv7-a;-mfpu=vfpv3_d16")
        target_link_options(${PROJECTNAME} PUBLIC "-march=armv7-a;-mfpu=vfpv3_d16")
      endif()
  endif()
  
  if (ARM_CPU STREQUAL "cortex-a7" )
      if (NOT (NEON OR NEONEXPERIMENTAL))
          target_compile_options(${PROJECTNAME} PUBLIC "-march=armv7-a;-mfpu=vfpv3_d16")
          target_link_options(${PROJECTNAME} PUBLIC "-march=armv7-a;-mfpu=vfpv3_d16")
      endif()
  endif()
  
  if (ARM_CPU STREQUAL "cortex-a5" )
      if ((NEON OR NEONEXPERIMENTAL))
        target_compile_options(${PROJECTNAME} PUBLIC "-march=armv7-a;-mfpu=neon-vfpv4")
        target_link_options(${PROJECTNAME} PUBLIC "-march=armv7-a;-mfpu=neon-vfpv4")
      else()
        target_compile_options(${PROJECTNAME} PUBLIC "-march=armv7-a;-mfpu=vfpv3_d16")
        target_link_options(${PROJECTNAME} PUBLIC "-march=armv7-a;-mfpu=vfpv3_d16")
      endif()
  endif()

  target_compile_options(${PROJECTNAME} PUBLIC 
    "$<$<COMPILE_LANGUAGE:C>:-O1>"
    "$<$<COMPILE_LANGUAGE:CXX>:-O1>"
  )
  
endfunction()

function(preprocessScatter CORE PLATFORMFOLDER SCATTERFILE)

    
    file(REMOVE ${SCATTERFILE})

    # Copy the mem file to the build directory 
    # so that it can be find when preprocessing the scatter file
    # since we cannot pass an include path to armlink
    add_custom_command(
      OUTPUT
       ${SCATTERFILE}
      COMMAND
        ${CMAKE_C_COMPILER} -I${PLATFORMFOLDER}/${CORE}/LinkScripts/IAR --silent --preprocess=n ${SCATTERFILE} ${PLATFORMFOLDER}/${CORE}/LinkScripts/IAR/lnk.icf 
      COMMAND 
        python ${ROOT}/CMSIS/DSP/filterLinkScript.py ${SCATTERFILE} 
      DEPENDS  
       "${PLATFORMFOLDER}/${CORE}/LinkScripts/IAR/lnk.icf;${PLATFORMFOLDER}/${CORE}/LinkScripts/IAR/mem_${CORE}.h"
      )
    
    add_custom_target(
      scatter ALL
      DEPENDS "${SCATTERFILE};${PLATFORMFOLDER}/${CORE}/LinkScripts/IAR/mem_${CORE}.h"
    )

    add_dependencies(${PROJECTNAME} scatter)
endfunction()

function(toolchainSpecificLinkForCortexM  PROJECTNAME ROOT CORE PLATFORMFOLDER HASCSTARTUP)
    if (HASCSTARTUP)
      target_sources(${PROJECTNAME} PRIVATE ${PLATFORMFOLDER}/${CORE}/Startup/IAR/startup_${CORE}.c)
    else()
      target_sources(${PROJECTNAME} PRIVATE ${PLATFORMFOLDER}/${CORE}/Startup/IAR/startup_${CORE}.s)
    endif() 

    target_include_directories(${PROJECTNAME} PRIVATE ${PLATFORMFOLDER}/${CORE}/LinkScripts/IAR)

    file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/tempLink)
    set(SCATTERFILE ${CMAKE_CURRENT_BINARY_DIR}/tempLink/lnk.icf)
    preprocessScatter(${CORE} ${PLATFORMFOLDER} ${SCATTERFILE})

    set_target_properties(${PROJECTNAME} PROPERTIES LINK_DEPENDS "${SCATTERFILE}")

    target_link_options(${PROJECTNAME} PRIVATE --entry=Reset_Handler --config ${SCATTERFILE})
endfunction()

function(toolchainSpecificLinkForCortexA  PROJECTNAME ROOT CORE PLATFORMFOLDER)
    target_sources(${PROJECTNAME} PRIVATE ${PLATFORMFOLDER}/${CORE}/Startup/IAR/startup_${CORE}.c)

    # RTE Components
    target_include_directories(${PROJECTNAME} PRIVATE ${ROOT}/CMSIS/DSP/Testing)
    target_include_directories(${PROJECTNAME} PRIVATE ${PLATFORMFOLDER}/${CORE}/LinkScripts/IAR)

    file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/tempLink)
    set(SCATTERFILE ${CMAKE_CURRENT_BINARY_DIR}/tempLink/lnk.icf)
    preprocessScatter(${CORE} ${PLATFORMFOLDER} ${SCATTERFILE})


    set_target_properties(${PROJECTNAME} PROPERTIES LINK_DEPENDS "${SCATTERFILE}")

    target_link_options(${PROJECTNAME} PRIVATE --entry=Reset_Handler --config ${SCATTERFILE})
endfunction()

function(toolchainSpecificLinkForCortexR  PROJECTNAME ROOT CORE PLATFORMFOLDER)
    target_sources(${PROJECTNAME} PRIVATE ${PLATFORMFOLDER}/${CORE}/Startup/IAR/startup_${CORE}.c)

    # RTE Components
    target_include_directories(${PROJECTNAME} PRIVATE ${ROOT}/CMSIS/DSP/Testing)
    target_include_directories(${PROJECTNAME} PRIVATE ${PLATFORMFOLDER}/${CORE}/LinkScripts/IAR)

    file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/tempLink)
    set(SCATTERFILE ${CMAKE_CURRENT_BINARY_DIR}/tempLink/lnk.icf)
    preprocessScatter(${CORE} ${PLATFORMFOLDER} ${SCATTERFILE})


    set_target_properties(${PROJECTNAME} PROPERTIES LINK_DEPENDS "${SCATTERFILE}")

    target_link_options(${PROJECTNAME} PRIVATE --entry=Reset_Handler --config ${SCATTERFILE})
endfunction()

function(compilerSpecificPlatformConfigLibForM PROJECTNAME ROOT)
  if (SEMIHOSTING)
    target_link_options(${PROJECTNAME} PRIVATE --semihosting)
  endif()
endfunction()

function(compilerSpecificPlatformConfigLibForA PROJECTNAME ROOT)
  if (SEMIHOSTING)
    target_link_options(${PROJECTNAME} PRIVATE --semihosting)
  endif()
endfunction()

function(compilerSpecificPlatformConfigLibForR PROJECTNAME ROOT)
  if (SEMIHOSTING)
    target_link_options(${PROJECTNAME} PRIVATE --semihosting)
  endif()
endfunction()

function(compilerSpecificPlatformConfigAppForM PROJECTNAME ROOT)
  if (SEMIHOSTING)
    target_link_options(${PROJECTNAME} PRIVATE --semihosting)
  endif()

endfunction()

function(compilerSpecificPlatformConfigAppForA PROJECTNAME ROOT)
  if (SEMIHOSTING)
    target_link_options(${PROJECTNAME} PRIVATE --semihosting)
  endif()

endfunction()

function(compilerSpecificPlatformConfigAppForR PROJECTNAME ROOT)
  if (SEMIHOSTING)
    target_link_options(${PROJECTNAME} PRIVATE --semihosting)
  endif()

endfunction()