cmake_minimum_required(VERSION 3.0)

if (UNIX)
  add_definitions(-D_POSIX_C_SOURCE=200809L)
endif()

include(CheckSymbolExists)
check_symbol_exists(getrusage sys/resource.h HAVE_GETRUSAGE)

##
# Determine the software version from VCS
# Fallback to descriptive version if VCS unavailable
#  NB: the "unconfirmed-" part refers to this being a fallback option
#      and the reported version may or may not be accurate.
set(VERSION_FALLBACK "unconfirmed-release-3.0")
set(VERSION_FILE ${CMAKE_CURRENT_BINARY_DIR}/version.cpp)
set(VERSION_FILE_IN ${CMAKE_CURRENT_SOURCE_DIR}/version.cpp.in)
set(VERSION_CACHE_FILE ${CMAKE_CURRENT_BINARY_DIR}/version.cache)
find_package(Git)
add_custom_target(
  genversion
  COMMAND ${CMAKE_COMMAND} -D OUTPUT=${VERSION_FILE}
                           -D TEMPLATE=${VERSION_FILE_IN}
                           -D VERSION_FALLBACK=${VERSION_FALLBACK}
                           -D VERSION_EXTRA=${VERSION_EXTRA}
                           -D VERSION_CACHE_FILE=${VERSION_CACHE_FILE}
                           -D GIT_EXECUTABLE=${GIT_EXECUTABLE}
                           -P ${CMAKE_SOURCE_DIR}/scripts/genversion.cmake
  WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
)

add_custom_command(
  OUTPUT ${VERSION_FILE}
  DEPENDS genversion
)

configure_file (
  "${CMAKE_CURRENT_SOURCE_DIR}/TMC3Config.h.in"
  "${PROJECT_BINARY_DIR}/tmc3/TMC3Config.h"
)

#
# NB: avoid the use of wild cards for source files in this directory,
# since cmake is unable to detect additions or removals in such cases
# resulting in obscure broken builds when switching branches or
# otherwise adding/removing files.
#
# Dependencies are permitted to use the wild card since they are
# not expected to change without modifying this CMakeLists.txt.
#

file(GLOB PROJECT_IN_FILES
  "TMC3Config.h.in"
  "version.cpp.in"
)

file(GLOB PROJECT_INC_FILES
  "AttributeDecoder.h"
  "AttributeEncoder.h"
  "BitReader.h"
  "BitWriter.h"
  "OctreeNeighMap.h"
  "PCCKdTree.h"
  "PCCMath.h"
  "PCCMisc.h"
  "PCCPointSet.h"
  "PCCPointSetProcessing.h"
  "PCCTMC3Common.h"
  "PCCTMC3Decoder.h"
  "PCCTMC3Encoder.h"
  "RAHT.h"
  "TMC3.h"
  "constants.h"
  "geometry.h"
  "geometry_octree.h"
  "geometry_trisoup.h"
  "hls.h"
  "io_hls.h"
  "io_tlv.h"
  "osspecific.h"
  "pcc_chrono.h"
  "ringbuf.h"
  "tables.h"
  "version.h"
  "../dependencies/nanoflann/*.hpp"
  "../dependencies/nanoflann/*.h"
  "../dependencies/arithmetic-coding/inc/*.h"
  "../dependencies/program-options-lite/*.h"
)

file(GLOB PROJECT_CPP_FILES
  "AttributeDecoder.cpp"
  "AttributeEncoder.cpp"
  "OctreeNeighMap.cpp"
  "RAHT.cpp"
  "TMC3.cpp"
  "decoder.cpp"
  "encoder.cpp"
  "geometry_octree.cpp"
  "geometry_octree_decoder.cpp"
  "geometry_octree_encoder.cpp"
  "geometry_trisoup_decoder.cpp"
  "geometry_trisoup_encoder.cpp"
  "io_hls.cpp"
  "io_tlv.cpp"
  "osspecific.cpp"
  "pcc_chrono.cpp"
  "tables.cpp"
  "../dependencies/arithmetic-coding/src/*.cpp"
  "../dependencies/program-options-lite/*.cpp"
)

source_group (inc FILES ${PROJECT_INC_FILES})
source_group (input FILES ${PROJECT_IN_FILES})
source_group (cpp FILES ${PROJECT_CPP_FILES})

include_directories(
  "${PROJECT_BINARY_DIR}/tmc3"
  "${CMAKE_CURRENT_SOURCE_DIR}"
  "${CMAKE_CURRENT_SOURCE_DIR}/../dependencies/nanoflann"
  "${CMAKE_CURRENT_SOURCE_DIR}/../dependencies/arithmetic-coding/inc"
  "${CMAKE_CURRENT_SOURCE_DIR}/../dependencies/program-options-lite"
)

add_executable (tmc3
  ${PROJECT_CPP_FILES}
  ${PROJECT_INC_FILES}
  ${PROJECT_IN_FILES}
  ${VERSION_FILE}
)
add_dependencies(tmc3 genversion)

install (TARGETS tmc3 DESTINATION bin)