include_directories(
    ${PROJECT_SOURCE_DIR}/include
    ${PROJECT_SOURCE_DIR}/include/satnogs/libfec
)

########################################################################
# Compiler specific setup
########################################################################
if(BUILD_32BIT_ON_64BIT)
    set(CMAKE_SYSTEM_PROCESSOR "i386")
    set(CMAKE_SIZEOF_VOID_P 4)
    set(CMAKE_C_FLAGS -m32)
    set(CMAKE_CXX_FLAGS -m32)
    add_definitions(-m32)
endif()

if((CMAKE_SYSTEM_PROCESSOR MATCHES "i386|i686|x86|AMD64") AND (CMAKE_SIZEOF_VOID_P EQUAL 4))
    set(TARGET_ARCH "x86")
elseif((CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64|AMD64") AND (CMAKE_SIZEOF_VOID_P EQUAL 8))
    set(TARGET_ARCH "x64")
elseif((CMAKE_SYSTEM_PROCESSOR MATCHES "i386") AND (CMAKE_SIZEOF_VOID_P EQUAL 8) AND (APPLE))
    # Mac is weird like that.
    set(TARGET_ARCH "x64")
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^arm*")
    set(TARGET_ARCH "ARM")
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64le")
    set(TARGET_ARCH "ppc64" "ppc64le")
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64")
    set(TARGET_ARCH "ppc64" "ppc")
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)")
    set(TARGET_ARCH "ppc")
endif()


if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANGCC)
    add_definitions(-Wall)
    add_definitions(-Wno-unused)

    if(TARGET_ARCH MATCHES "x64")
         add_definitions(-fPIC)
         add_definitions(-msse2)
    elseif(TARGET_ARCH MATCHES "x86")
         add_definitions(-mmmx)
         add_definitions(-msse)
         add_definitions(-msse2)
    elseif(TARGET_ARCH MATCHES "ppc|ppc64")
         add_definitions(-fno-common)
         add_definitions(-faltivec)
    endif()

endif()

########################################################################
# Find build dependencies
########################################################################

# libm
find_library(M_LIB m REQUIRED)


########################################################################
# config.h
########################################################################

#add_definitions(-DHAVE_CONFIG_H)

# Checks for includes
include(CheckIncludeFile)
check_include_file("getopt.h"           HAVE_GETOPT_H)
check_include_file("stdio.h"            HAVE_STDIO_H)
check_include_file("stdlib.h"           HAVE_STDLIB_H)
check_include_file("memory.h"           HAVE_MEMORY_H)
check_include_file("string.h"           HAVE_STRING_H)

# Checks for functions
include(CheckFunctionExists)
check_function_exists("getopt_long"      HAVE_GETOPT_LONG)
check_function_exists("memset"           HAVE_MEMSET)
check_function_exists("memmove"          HAVE_MEMMOVE)


########################################################################
# Setup apps
########################################################################

if(TARGET_ARCH MATCHES "x64")
    list(APPEND libfec_sources
        dotprod_port.c
        peakval_port.c
        sumsq.c
        sumsq_port.c
        cpu_mode_x86_64.c
        ##asm
        #sse2bfly27-64.s
        #sse2bfly29-64.s
        )

elseif(TARGET_ARCH MATCHES "x86")
    list(APPEND libfec_sources
        viterbi27_mmx.c
        viterbi27_sse.c
        viterbi27_sse2.c
        viterbi29_mmx.c
        viterbi29_sse.c
        viterbi29_sse2.c
        viterbi39_sse2.c
        viterbi39_sse.c
        viterbi39_mmx.c
        viterbi615_mmx.c
        viterbi615_sse.c
        viterbi615_sse2.c
        dotprod_mmx.c
        dotprod_sse2.c
        #peakval_mmx.c
        #peakval_sse.c
        #peakval_sse2.c
        sumsq.c
        sumsq_port.c
        sumsq_sse2.c
        sumsq_mmx.c
        cpu_mode_x86.c
        #asm
        cpu_features.s
        dotprod_mmx_assist.s
        dotprod_sse2_assist.s
        mmxbfly27.s
        mmxbfly29.s
        peak_mmx_assist.s
        peak_sse2_assist.s
        peak_sse_assist.s
        peakval_mmx_assist.s
        peakval_sse2_assist.s
        peakval_sse_assist.s
        sse2bfly27.s
        sse2bfly29.s
        ssebfly27.s
        ssebfly29.s
        sumsq_mmx_assist.s
        sumsq_sse2_assist.s
        )

elseif(TARGET_ARCH MATCHES "ppc|ppc64")
    list(APPEND libfec_sources
        viterbi27_av.c
        viterbi29_av.c
        viterbi39_av.c
        viterbi615_av.c
        encode_rs_av.c
        dotprod_av.c
        sumsq_av.c
        peakval_av.c
        cpu_mode_ppc.c
        )
else()
    list(APPEND libfec_sources
        cpu_mode_generic.c
        )

endif()


list(APPEND libfec_sources
    fec.c
    sim.c
    viterbi27.c
    viterbi27_port.c
    viterbi29.c
    viterbi29_port.c
    viterbi39.c
    viterbi39_port.c
    viterbi615.c
    viterbi615_port.c
    encode_rs_char.c
    encode_rs_int.c
    encode_rs_8.c
    decode_rs_char.c
    decode_rs_int.c
    decode_rs_8.c
    init_rs_char.c
    init_rs_int.c
    encode_rs_ccsds.c
    decode_rs_ccsds.c
    dotprod.c
    dotprod_port.c
    peakval.c
    peakval_port.c
    sumsq.c
    sumsq_port.c
    ccsds_tab.c
    ccsds_tal.c
)

########################################################################
# Setup libraries
########################################################################

# generate ccsds_tab.c
add_executable(gen_ccsds gen_ccsds.c init_rs_char.c)
add_custom_command(
    OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/ccsds_tab.c
    COMMAND  ${CMAKE_CURRENT_BINARY_DIR}/gen_ccsds > ccsds_tab.c
    DEPENDS  gen_ccsds
)

# generate ccsds_tal.c
add_executable(gen_ccsds_tal gen_ccsds_tal.c)
add_custom_command(
    OUTPUT   ${CMAKE_CURRENT_BINARY_DIR}/ccsds_tal.c
    COMMAND  ${CMAKE_CURRENT_BINARY_DIR}/gen_ccsds_tal > ccsds_tal.c
    DEPENDS  gen_ccsds_tal
)

# libfec
add_library(gnuradio-satnogs-fec SHARED ${libfec_sources}) 

target_link_libraries(gnuradio-satnogs-fec ${M_LIB})

target_include_directories(gnuradio-satnogs-fec
  PUBLIC
  $<INSTALL_INTERFACE:${CMAKE_INSTALL_PREFIX}/include/satnogs/libfec>
  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../../include/satnogs/libfec>
  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/
  )

if(APPLE)
    set_target_properties(gnuradio-satnogs-fec PROPERTIES
        INSTALL_NAME_DIR "${CMAKE_INSTALL_PREFIX}/lib"
    )
endif(APPLE)

########################################################################
# Install built library files
########################################################################
include(GrMiscUtils)
GR_LIBRARY_FOO(gnuradio-satnogs-fec)