# Build system for a subset of third party libraries required by displaz.

set(CMAKE_BUILD_TYPE "Release" CACHE STRING
    "Choose the type of build, options are: None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel."
)

if(NOT WIN32)
    set(CMAKE_CXX_FLAGS "-std=c++0x"
        CACHE STRING "Flags used by the compiler during all build types.")
endif()

project(external_libs)

cmake_minimum_required(VERSION 2.8.12)

set(DOWNLOAD_DIR "${PROJECT_SOURCE_DIR}/downloads"
    CACHE PATH "Location for downloaded source archives")
set(THIRDPARTY_INSTALL_PREFIX "dist"
    CACHE PATH "Location to install third party libraries")

set(CMAKE_INSTALL_PREFIX ${THIRDPARTY_INSTALL_PREFIX})

include(ExternalProject)

ExternalProject_Add(
    Imath
    URL https://github.com/AcademySoftwareFoundation/Imath/archive/refs/tags/v3.1.6.tar.gz
    URL_MD5 dccea95a752b7a772706e5cc8b0043dc
    CMAKE_ARGS
        -D CMAKE_CXX_FLAGS:STRING=${CMAKE_CXX_FLAGS}
        -D CMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
        -D CMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
        -D NAMESPACE_VERSIONING:BOOL=OFF
        -D BUILD_SHARED_LIBS:BOOL=OFF
    INSTALL_DIR "${CMAKE_INSTALL_PREFIX}"
    DOWNLOAD_DIR "${DOWNLOAD_DIR}"
)

ExternalProject_Add(
    laslib
    SOURCE_DIR ${PROJECT_SOURCE_DIR}/LAStools
    CMAKE_ARGS
        -D CMAKE_CXX_FLAGS:STRING=${CMAKE_CXX_FLAGS}
        -D CMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
        -D CMAKE_CONFIGURATION_TYPES:STRING=${CMAKE_BUILD_TYPE}
        -D CMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
    INSTALL_DIR "${CMAKE_INSTALL_PREFIX}"
    DOWNLOAD_DIR "${DOWNLOAD_DIR}"
)