CMakeLists.txt

# cmake_minimum_required(VERSION 2.8 FATAL_ERROR) # we need at least 3.11 because we use the FetchContent feature to manage dependencies and at least 3.14 because we use FetchContent_MakeAvailable


cmake_minimum_required(VERSION 2.8...3.22) 

project(easygl)

#We do it similar to how libigl does it because this fixes an issue with the torch transitive dependency
#the issue was that easygl is looking for torcha and linking to it, easypbr also does the same and this can trigger the issue that mkl:mkl target has the same name in both. This only happens on some machines
#solutions are here https://stackoverflow.com/a/63409763
# and also here https://stackoverflow.com/questions/42978414/how-to-handle-a-transitive-dependency-conflict-using-git-submodules-and-cmake


list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/cmake)

include(easygl)




































# cmake_minimum_required(VERSION 2.8...3.22) 

# project(easygl)



# ###   VARIABLES   ##############################################################
# set(CMAKE_BUILD_TYPE RelWithDebInfo)
# set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH}" "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
# set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -O3 -Wno-reorder") #we need c++17 because this solves alignment issues with eigen http://eigen.tuxfamily.org/bz/show_bug.cgi?id=1409
# set(CMAKE_CXX_STANDARD 17) #we need c++17 because this solves alignment issues with eigen http://eigen.tuxfamily.org/bz/show_bug.cgi?id=1409
# set(CMAKE_CXX_STANDARD_REQUIRED ON)
# set(CMAKE_CXX_EXTENSIONS OFF)



# ####   GLOBAL OPTIONS   ###https://stackoverflow.com/questions/15201064/cmake-conditional-preprocessor-define-on-code


# ######   PACKAGES   ############################################################
# find_package(GLFW REQUIRED)
# find_package(Eigen3 3.3 REQUIRED NO_MODULE)
# find_package(OpenCV REQUIRED COMPONENTS core imgproc highgui imgcodecs )
# #try to compile with pytorch if you can
# # get and append paths for finding dep
# execute_process( #do it like this https://github.com/facebookresearch/hanabi_SAD/blob/6e4ed590f5912fcb99633f4c224778a3ba78879b/rela/CMakeLists.txt#L10
#   COMMAND python -c "import torch; import os; print(os.path.dirname(torch.__file__), end='')"
#   OUTPUT_VARIABLE TorchPath
# )
# #sometimes we want to use libtorch because the pytorch one has a different abi
# # set(TorchPath "/home/rosu/work/ws/libtorch-cxx11-abi-shared-with-deps-1.9.0+cu111/libtorch")
# # set(TorchPath "/home/rosu/work/ws/libtorch-cxx11-abi-shared-with-deps-1.9.1+cu111/libtorch")
# # list(APPEND CMAKE_PREFIX_PATH ${TorchPath})
# # find_package(Torch)
# # set(TORCH_FOUND False)
# if(TorchPath STREQUAL "")
#     set(TORCH_FOUND False)
# else()
#     list(APPEND CMAKE_PREFIX_PATH ${TorchPath})
#     find_package(Torch)
# endif()


# if(NOT TARGET torch)
#     message("----------------------easygl no target torch")
# else()
#     message("----------------------easygl we have target torch")
# endif()






# ###   SOURCES   #################################################################
# set(MY_SRC
#     ${PROJECT_SOURCE_DIR}/src/Buf.cxx
#     ${PROJECT_SOURCE_DIR}/src/CubeMap.cxx
#     ${PROJECT_SOURCE_DIR}/src/GBuffer.cxx
#     ${PROJECT_SOURCE_DIR}/src/Shader.cxx
#     ${PROJECT_SOURCE_DIR}/src/Texture2D.cxx
#     ${PROJECT_SOURCE_DIR}/src/VertexArrayObject.cxx
# )




# ###   MAIN LIB  ####################
# add_library( easygl_cpp SHARED ${MY_SRC}  ${CMAKE_SOURCE_DIR}/extern/glad/glad.c  )


# ###   INCLUDES   #########################################################
# set(PROJECT_INCLUDE_DIR ${PROJECT_SOURCE_DIR}/include
#                         ${CMAKE_SOURCE_DIR}/extern
#                         ${CMAKE_SOURCE_DIR}/deps/loguru
#                         ) # Header folder
# target_include_directories(easygl_cpp PUBLIC ${PROJECT_INCLUDE_DIR} )
# target_include_directories(easygl_cpp PUBLIC ${GLFW_INCLUDE_DIR})
# # include_directories(${Boost_INCLUDE_DIR})
# target_include_directories(easygl_cpp PUBLIC ${EIGEN3_INCLUDE_DIR})
# target_include_directories(easygl_cpp PUBLIC ${OpenCV_INCLUDE_DIRS})
# if(${TORCH_FOUND})
#     target_include_directories(easygl_cpp PUBLIC ${TORCH_INCLUDE_DIRS})
# endif()







# ##pybind
# # pybind11_add_module(easypbr ${PROJECT_SOURCE_DIR}/src/PyBridge.cxx )


# ###   EXECUTABLE   #######################################
# # add_executable(run_easypbr ${PROJECT_SOURCE_DIR}/src/main.cxx  )



# ###   SET ALL THE GLOBAL OPTIONS #########################################
# if(${TORCH_FOUND})
#     message("USING TORCH")
#     target_compile_definitions(easygl_cpp PUBLIC EASYPBR_WITH_TORCH)
# else()
#     message("NOT USING TORCH")
# endif()

# #definitions for cmake variables that are necesarry during runtime
# # target_compile_definitions(easygl_cpp PRIVATE PROJECT_SOURCE_DIR="${PROJECT_SOURCE_DIR}") #point to the cmakelist folder of the easy_pbr







# ###   LIBS   ###############################################
# set(LIBS -lpthread -ldl) #because loguru needs them
# if(${TORCH_FOUND})
#     # message("Torch libraries are ", ${TORCH_LIBRARIES})
#     set(LIBS ${LIBS} ${TORCH_LIBRARIES} )
#     #torch 1.5.0 and above mess with pybind and we therefore need to link against libtorch_python.so also
#     find_library(TORCH_PYTHON_LIBRARY torch_python PATHS "${TORCH_INSTALL_PREFIX}/lib")
#     message(STATUS "TORCH_PYTHON_LIBRARY: ${TORCH_PYTHON_LIBRARY}")
#     if(TORCH_PYTHON_LIBRARY)
#         message(STATUS "Linking to torch_python_library")
#         set(LIBS ${LIBS} ${TORCH_PYTHON_LIBRARY} )
#     endif()
# endif()
# # set(LIBS ${LIBS} Eigen3::Eigen  ${Boost_LIBRARIES}  igl::core   ${GLFW_LIBRARIES} ${OpenCV_LIBS} ${PCL_LIBRARIES}  )
# set(LIBS ${LIBS} Eigen3::Eigen ${GLFW_LIBRARIES} ${OpenCV_LIBS}  )


# target_link_libraries(easygl_cpp PUBLIC ${LIBS} )