cmake_minimum_required(VERSION 3.0)

# unpack headers needed
set(SPC_DRV drv_header_v402b6844.zip)
set(SPC_HEADERS
        include/spcerr.h
        include/regs.h
        include/dlltyp.h
        include/spcioctl.inc)

add_custom_command(OUTPUT ${SPC_HEADERS}
        COMMAND unzip -o -q -u ${SPC_DRV} "*.h" "*.txt" "*.inc" -d include/
        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
        COMMENT "Unpacking SPC headers"
        VERBATIM)

# Kernelmodule is build from NDA source code.
# just go to the current directory and tar xfz drvsrc_all_V*.tgz
# this will usually create a "linux" folder
# the actual kernel source file is in the src_all/micx_drv subfolder.
# If the "linux" folder exists the driver will be build.
# Alternatively you can set the SPC_SOURCE environment variable to the micx_drv folder

message("\nIf you have signed the NDA from Spectrum and got a kernel driver tarball (i.e. drvsrc_all_V*.tgz), put it in:\n\n\t" ${CMAKE_CURRENT_SOURCE_DIR}  "\n\nto get a kernel module built\n")
file(GLOB MILIST "drvsrc_all_V*.tgz" )
# sort and select last (alphabetic order) tarball driver
list(SORT MILIST)
if(MILIST)
    list(GET MILIST -1 MITGZ )
else()
    set(MITGZ "non-existing-file")
endif()
#message(STATUS ${MITGZ})

if(EXISTS ${MITGZ})
	message(STATUS "Using spectrum driver source tarball: " ${MITGZ})
	add_custom_command(OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/linux/src_all/micx_drv
		COMMAND tar xfvz ${MITGZ}
		COMMAND cp -v ${CMAKE_CURRENT_SOURCE_DIR}/linux/src_all/micx_drv/makefile.kernel26 ${CMAKE_CURRENT_SOURCE_DIR}/linux/src_all/micx_drv/Makefile
		COMMAND sed -i 's/-Wno-deprecated-declarations/Wno-deprecated-declarations -w' ${CMAKE_CURRENT_SOURCE_DIR}/linux/src_all/micx_drv/Makefile
        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
		COMMENT "Unpacking Spectrum driver tarball"
        VERBATIM)
	set(SPC_SRC "${CMAKE_CURRENT_SOURCE_DIR}/linux/src_all/micx_drv")
	add_custom_target(spc_smp ALL DEPENDS linux/src_all/micx_drv)
elseif(DEFINED ENV{SPC_SOURCE})
	message(STATUS "SPC_SOURCE environment variable set:" $ENV{SPC_SOURCE})
	set(SPC_SRC $ENV{SPC_SOURCE})

else()
	set(SPC_SRC "${CMAKE_CURRENT_SOURCE_DIR}/linux/src_all/micx_drv")
	message(WARNING "Spectrum driver source path not defined in envirnoment variable SPC_SOURCE, using default:" ${SPC_SRC})
endif()


set(DRIVER_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
file(GLOB KERNEL_VERSIONS_DIR RELATIVE "/lib/modules" "/lib/modules/*/build")
foreach(KERNEL_DIR ${KERNEL_VERSIONS_DIR})
  string(REPLACE "/build" "" KERNEL_VERSION ${KERNEL_DIR})
  message(STATUS "Compiling spc_smp.ko for kernel: " ${KERNEL_VERSION})
  set(DRIVER_FILE ${KERNEL_VERSION}/spc_smp.ko )
  set(KBUILD_CMD ${CMAKE_MAKE_PROGRAM}
                 -C "/lib/modules/${KERNEL_DIR}"
                 M=${SPC_SRC} modules)
  
  add_custom_command(OUTPUT ${DRIVER_FILE}
                     COMMAND ls -lr .
                     COMMAND ${KBUILD_CMD}
		             COMMAND mkdir -p ${DRIVER_DIRECTORY}/${KERNEL_VERSION}
		  			 COMMAND cp -fv ${SPC_SRC}/spc_smp.ko ${DRIVER_DIRECTORY}/${KERNEL_VERSION}/spc_smp.ko
		             COMMENT "Building spc_smp.ko for kernel version: " ${KERNEL_VERSION}
                     WORKING_DIRECTORY ${SPC_SRC}
                     VERBATIM)
  if(EXISTS ${SPC_SRC})
	  add_custom_target (micx_drv_${KERNEL_VERSION} ALL DEPENDS ${DRIVER_FILE} )
      install(FILES ${DRIVER_FILE} DESTINATION /lib/modules/${KERNEL_VERSION}/kernel/damaris)
  else()
	  message(WARNING "Spectrum MI40xx kernel driver directory not found\n  " ${SPC_SRC} "\nunpack and configure it (i.e. set SPC_SOURCE variable)")
  endif()
endforeach(KERNEL_DIR)
add_library(Spectrum_MI40xxSeries STATIC Spectrum-MI40xxSeries.cpp GatedData.cpp ${SPC_HEADERS})

add_executable(hw_test_ext hw_test_extclock.cpp GatedData.cpp ${SPC_HEADERS})
#target_sources(hw_test_ext PRIVATE ${SPC_HEADERS})

add_executable(hw_test_int hw_test_intclock.cpp GatedData.cpp ${SPC_HEADERS})
#target_include_directories(hw_test_int ${SPC_HEADERS})