cmake_minimum_required(VERSION 3.5)
project(embree_vendor)

# Default to C99
if(NOT CMAKE_C_STANDARD)
  set(CMAKE_C_STANDARD 99)
endif()

# Default to C++14
if(NOT CMAKE_CXX_STANDARD)
  set(CMAKE_CXX_STANDARD 14)
endif()

if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
  add_compile_options(-Wall -Wextra -Wpedantic)
endif()

# find dependencies
find_package(ament_cmake REQUIRED)

macro(build_embree)

  set(cmake_commands)
  set(cmake_configure_args
    -Wno-dev
    -DCMAKE_INSTALL_PREFIX=${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}_install
    -DEMBREE_ISPC_SUPPORT=OFF)

  include(ExternalProject)
  externalproject_add(embree-ext
    GIT_REPOSITORY https://github.com/embree/embree.git
    GIT_TAG v3.8.0
    TIMEOUT 6000
    ${cmake_commands}
    CMAKE_ARGS
      ${cmake_configure_args}
  )

  # The external project will install to the build folder, but we'll install that on make install.
  install(
    DIRECTORY
      ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}_install/
    DESTINATION
      ${CMAKE_INSTALL_PREFIX}
  )
endmacro()

build_embree()

ament_export_include_directories(include)
ament_export_libraries(embree3)

ament_package()
