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CMakeLists.txt
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CMakeLists.txt
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cmake_minimum_required(VERSION 3.12)
################################################################################
# Build shared libraries
if (MINGW) # Workaround for using MinGW on Windows
set(Easy3D_BUILD_SHARED_LIBS OFF)
else()
option(Easy3D_BUILD_SHARED_LIBS "Build shared libaries" ON )
endif ()
# Build tutorials
option(Easy3D_BUILD_TUTORIALS "Build Easy3D tutorials" ON )
# Build documentation
option(Easy3D_BUILD_DOCUMENTATION "Build Easy3D documentation" OFF)
# Build tests
option(Easy3D_BUILD_TESTS "Build Easy3D tests programs" OFF)
# Build Python bindings
option(Easy3D_BUILD_PYTHON_BINDINGS "Build Python bindings" OFF)
# Build advanced features that require CGAL (>= v5.1)
option(Easy3D_ENABLE_CGAL "Build advanced features that require CGAL (>= v5.1)" OFF)
# Build examples/applications based on Qt (Qt5 >= v5.6, or Qt6)
option(Easy3D_ENABLE_QT "Build examples/applications based on Qt (Qt5 >= v5.6, or Qt6)" OFF)
# Build the video encoding module that requires ffmpeg
option(Easy3D_ENABLE_FFMPEG "Build the video encoding module that requires ffmpeg (>= v3.4)" OFF)
################################################################################
set(Easy3D_VERSION_MAJOR 2)
set(Easy3D_VERSION_MINOR 5)
set(Easy3D_VERSION_PATCH 4)
set(Easy3D_VERSION_STRING ${Easy3D_VERSION_MAJOR}.${Easy3D_VERSION_MINOR}.${Easy3D_VERSION_PATCH})
set(Easy3D_VERSION_NUMBER 10${Easy3D_VERSION_MAJOR}0${Easy3D_VERSION_MINOR}0${Easy3D_VERSION_PATCH})
project(Easy3D VERSION ${Easy3D_VERSION_STRING})
################################################################################
# specify the C++ standard
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
message("-- Setting C++11")
################################################################################
# Offer the user the choice of overriding the installation directories
# Let's also add the version to the path to allow multiple versions of Easy3D in the same directory.
if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
if (WIN32) # windows
set(CMAKE_INSTALL_PREFIX "C:/Program Files/Easy3D/${Easy3D_VERSION_STRING}" CACHE PATH "Installation directory" FORCE)
elseif (APPLE) # macOS
set(CMAKE_INSTALL_PREFIX "/usr/local/Cellar/easy3d/${Easy3D_VERSION_STRING}" CACHE PATH "Installation directory" FORCE)
else () # Linux: different from tradition, let's keep everything together
set(CMAKE_INSTALL_PREFIX "/usr/local/easy3d-${Easy3D_VERSION_STRING}" CACHE PATH "Installation directory" FORCE)
endif ()
endif ()
if (APPLE)
set(CMAKE_OSX_DEPLOYMENT_TARGET "11.0" CACHE STRING "Minimum macOS support" FORCE)
endif ()
set(Easy3D_INSTALL_LIB_DIR ${CMAKE_INSTALL_PREFIX}/lib CACHE PATH "Installation directory for libraries")
set(Easy3D_INSTALL_BIN_DIR ${CMAKE_INSTALL_PREFIX}/bin CACHE PATH "Installation directory for executables")
set(Easy3D_INSTALL_INCLUDE_DIR ${CMAKE_INSTALL_PREFIX}/include CACHE PATH "Installation directory for header files")
set(Easy3D_INSTALL_CMAKE_DIR ${CMAKE_INSTALL_PREFIX}/lib/CMake CACHE PATH "Installation directory for CMake files")
set(Easy3D_INSTALL_RESOURCE_DIR ${CMAKE_INSTALL_PREFIX}/resources CACHE PATH "Installation directory for CMake files")
# The include directory of the exported header files
set(Easy3D_EXPORT_INCLUDE_DIR "${Easy3D_BINARY_DIR}/include")
# Setting RPATH
# See https://cmake.org/Wiki/CMake_RPATH_handling
set(CMAKE_INSTALL_RPATH ${Easy3D_INSTALL_LIB_DIR} CACHE PATH "Installation runtime directory" FORCE)
################################################################################
### Configuration
set(Easy3D_ROOT ${CMAKE_CURRENT_LIST_DIR})
set(Easy3D_THIRD_PARTY ${Easy3D_ROOT}/3rd_party)
set(Easy3D_INCLUDE_DIR ${Easy3D_ROOT})
set(Easy3D_SOURCE_DIR ${Easy3D_ROOT})
set(Easy3D_BINARY_DIR ${CMAKE_BINARY_DIR})
### conditionally compile certain modules depending on libraries found on the system
list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/cmake)
### Where to put the libraries
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${Easy3D_BINARY_DIR}/bin)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${Easy3D_BINARY_DIR}/lib)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${Easy3D_BINARY_DIR}/lib)
### update EASY3D_VERSION_NR and EASY3D_RELEASE_DATE
file(READ "${Easy3D_INCLUDE_DIR}/easy3d/util/version.h" file_content)
string(REGEX REPLACE "EASY3D_VERSION_NR 10[0-9]0[0-9]0[0-9]" "EASY3D_VERSION_NR ${Easy3D_VERSION_NUMBER}" file_content "${file_content}")
string(TIMESTAMP TODAY "%Y%m%d")
string(REGEX REPLACE "EASY3D_RELEASE_DATE [0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]" "EASY3D_RELEASE_DATE ${TODAY}" file_content "${file_content}")
file(WRITE ${Easy3D_INCLUDE_DIR}/easy3d/util/version.h "${file_content}")
################################################################################
# Discourage users to build Easy3D directly in its root directory
if (${CMAKE_CURRENT_BINARY_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR})
if (NOT SAME_BUILD_AND_SOURCE_FOLDER_WARNING_ALREADY_ISSUED)
message(WARNING "It is NOT advised to build Easy3D directly in its root directory!")
set(SAME_BUILD_AND_SOURCE_FOLDER_WARNING_ALREADY_ISSUED TRUE)
endif ()
endif ()
# Detect whether this is a top-level project
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
set(Easy3D_TOPLEVEL_PROJECT ON)
else ()
set(Easy3D_TOPLEVEL_PROJECT OFF)
endif ()
set_property(GLOBAL PROPERTY USE_FOLDERS ON)
################################################################################
include(GenerateExportHeader)
if (Easy3D_BUILD_SHARED_LIBS)
set(Easy3D_LIB_TYPE SHARED)
#Ref: Create dlls on Windows without declspec() using new CMake export all feature
# https://cmake.org/cmake/help/v3.4/prop_tgt/WINDOWS_EXPORT_ALL_SYMBOLS.html#prop_tgt:WINDOWS_EXPORT_ALL_SYMBOLS
# https://www.kitware.com/create-dlls-on-windows-without-declspec-using-new-cmake-export-all-feature/
if (WIN32 OR MSVC)
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS TRUE)
endif ()
else ()
set(Easy3D_LIB_TYPE STATIC)
endif ()
################################################################################
if (Easy3D_ENABLE_CGAL)
find_package(CGAL QUIET)
if (CGAL_FOUND)
if (CGAL_VERSION VERSION_GREATER_EQUAL "5.1")
set(Easy3D_HAS_CGAL TRUE)
mark_as_advanced(BUILD_TESTING
CGAL_CTEST_DISPLAY_MEM_AND_TIME
CGAL_DEV_MODE
CGAL_TEST_DRAW_FUNCTIONS
CGAL_WITH_DRAW_FUNCTIONS
CGAL_WITH_GMPXX)
message(STATUS "Found CGAL v${CGAL_VERSION}. Include dirs: ${CGAL_INCLUDE_DIRS}")
else ()
set(Easy3D_HAS_CGAL FALSE)
message(FATAL_ERROR "You have requested CGAL support and CGAL v${CGAL_VERSION} is found. However, Easy3D "
"requires at least v5.1. Please install CGAL v5.1 or above. In case you have multiple versions "
"of CGAL on your platform, provide the path of a suitable one to the CMake variable `CGAL_DIR`. "
"Please note that only the following surface mesh algorithms require CGAL (v5.1 or later): \n"
" - reorientation; \n"
" - detecting/resolving duplicate vertices/faces; \n"
" - detecting/resolving self-intersection; \n"
" - clipping/splitting/slicing. \n"
"If you don't need these algorithms, disable CGAL support by setting `Easy3D_ENABLE_CGAL` to `OFF`. "
"You will still be able to use all other features provided by Easy3D without CGAL.")
return()
endif ()
else ()
set(Easy3D_HAS_CGAL FALSE)
message(FATAL_ERROR "You have requested CGAL support but CGAL (v5.1 or later required) was not found. You can "
"set 'CGAL_DIR' to the directory containing `CGALConfig.cmake` or `cgal-config.cmake` to help CMake find CGAL. "
"Please note that only the following surface mesh algorithms require CGAL (v5.1 or later): \n"
" - reorientation; \n"
" - detecting/resolving duplicate vertices/faces; \n"
" - detecting/resolving self-intersection; \n"
" - clipping/splitting/slicing. \n"
"If you don't need these algorithms, disable CGAL support by setting `Easy3D_ENABLE_CGAL` to `OFF`. "
"You will still be able to use all other features provided by Easy3D without CGAL.")
return()
endif ()
endif ()
if (Easy3D_ENABLE_FFMPEG)
include(./cmake/FindFFMPEG.cmake)
if (FFMPEG_FOUND)
set(Easy3D_HAS_FFMPEG TRUE)
else ()
set(Easy3D_HAS_FFMPEG FALSE)
message(WARNING "You have requested ffmpeg support but ffmpeg was not found (v3.4 or later required). "
"The ffmpeg support allows encoding/recording animation into a video file. You can ignore "
"this warning if you don't need this feature. \n"
"To enable video encoding, make sure ffmpeg exists on your system. Modify the search paths of "
"'include' and 'lib' in 'Easy3D/cmake/FindFFMPEG.cmake', and then run CMake. \n"
"How to install ffmpeg (v3.4 or later required)? \n"
" On Windows, you can download ffmpeg from: \n"
" https://ffmpeg.org/download.html \n"
" On macOS, use the following command to install ffmpeg: \n"
" brew install ffmpeg \n"
" On Linux, one has to install the libraries using: \n"
" sudo apt-get install libavcodec-dev \n"
" sudo apt-get install libavformat-dev \n"
" sudo apt-get install libswscale-dev \n"
" sudo apt-get install libavutil-dev \n"
)
endif ()
endif ()
################################################################################
# Make relative paths absolute (needed later on)
foreach (path LIB BIN INCLUDE CMAKE)
set(var Easy3D_INSTALL_${path}_DIR)
if (NOT IS_ABSOLUTE "${${var}}")
set(${var} "${Easy3D_INSTALL_DIR}/${${var}}")
endif ()
endforeach ()
function(add_module module headers sources private_dependencies public_dependencies)
add_library(easy3d_${module} ${Easy3D_LIB_TYPE} ${headers} ${sources})
if (WIN32 OR MSVC)
# define Windows-specific preprocessor definitions, and get a clean windows
target_compile_definitions(easy3d_${module} PUBLIC NOMINMAX WIN32_LEAN_AND_MEAN VC_EXTRALEAN _CRT_SECURE_NO_WARNINGS _CRT_SECURE_NO_DEPRECATE)
endif ()
# if(MINGW)
# # shared libraries (dynamic libraries) in MinGW do not automatically propagate symbols from dependencies
# # to other libraries. Unlike MSVC, where a chain of dependent libraries can resolve symbols transitively.
# # Liangliang: Workaround to handle dynamic library generation using MinGW (does not work).
# # MinGW/GCC-specific workaround for transitive linking
# if (CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
# target_link_libraries(easy3d_${module}
# PRIVATE -Wl,--whole-archive 3rd_easyloggingpp -Wl,--no-whole-archive
# )
# endif()
#
# # Liangliang: Workaround to handle dynamic library generation using MinGW (need to .
# # Issue: To work with MSVC, CMake's "generate_export_header(...)" is used to generate preprocessor
# # EXPORT macros (that contains -_declspec(dllexport) or __declspec(dllimport)), and MSVC
# # requires to explicitly mark the global variables with the macro. However, MinGW has a
# # Linux/Unix-like behavior, which can either export everything (when the macro is not used)
# # or export only those marked by this macro. Thus with MinGW, classes/functions/variables not
# # marked by the macro are not exported.
# string(TOUPPER ${module} MODULE_NAME)
# set(EXTRA_MICRO_DEFINES "\n//Liangliang: Workaround to handle dynamic library generation using MinGW\n#if (defined(__MINGW32__) || defined(__MINGW64__))\n# undef EASY3D_${MODULE_NAME}_EXPORT\n# define EASY3D_${MODULE_NAME}_EXPORT\n#endif\n")
# endif ()
#Ref: Create dlls on Windows without declspec() using new CMake export all feature
# https://www.kitware.com/create-dlls-on-windows-without-declspec-using-new-cmake-export-all-feature/
generate_export_header(easy3d_${module}
EXPORT_FILE_NAME "${Easy3D_EXPORT_INCLUDE_DIR}/easy3d/${module}/export.h"
)
# Include directories for the target
target_include_directories(easy3d_${module} PUBLIC
"$<BUILD_INTERFACE:${Easy3D_INCLUDE_DIR}>"
"$<BUILD_INTERFACE:${Easy3D_EXPORT_INCLUDE_DIR}>"
"$<INSTALL_INTERFACE:${Easy3D_INSTALL_INCLUDE_DIR}>"
)
# Link dependencies
target_link_libraries(easy3d_${module}
PRIVATE ${private_dependencies}
PUBLIC ${public_dependencies}
)
# Set properties for the library
set_target_properties(easy3d_${module} PROPERTIES
FOLDER "easy3d"
SOVERSION ${Easy3D_VERSION_MAJOR}
VERSION ${Easy3D_VERSION_STRING}
)
# Add an alias target (recommended by policy CMP0028) and it looks nicer
message(STATUS "Adding target: easy3d::${module} (easy3d_${module})")
add_library(easy3d::${module} ALIAS easy3d_${module})
# Export as easy3d::${module}
set_property(TARGET easy3d_${module} PROPERTY EXPORT_NAME easy3d::${module})
endfunction()
function(install_module module)
set_target_properties(easy3d_${module} PROPERTIES PUBLIC_HEADER "${${module}_headers}")
install(TARGETS easy3d_${module}
# IMPORTANT: Add the library to the "export-set"
EXPORT Easy3DTargets
RUNTIME DESTINATION "${Easy3D_INSTALL_BIN_DIR}" COMPONENT bin
LIBRARY DESTINATION "${Easy3D_INSTALL_LIB_DIR}" COMPONENT lib
ARCHIVE DESTINATION "${Easy3D_INSTALL_LIB_DIR}" COMPONENT lib
PUBLIC_HEADER DESTINATION "${Easy3D_INSTALL_INCLUDE_DIR}/easy3d/${module}"
COMPONENT dev)
endfunction()
################################################################################
add_subdirectory(3rd_party)
add_subdirectory(easy3d)
if (Easy3D_BUILD_TUTORIALS)
add_subdirectory(tutorials)
endif ()
if (Easy3D_BUILD_TESTS)
add_subdirectory(tests)
endif ()
if (Easy3D_BUILD_PYTHON_BINDINGS)
# Specify the output directory for the Python package
set(Easy3D_PYTHON_PACKAGE_DIR "${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/python")
add_subdirectory(python)
endif ()
add_subdirectory(applications)
################################################################################
if (Easy3D_BUILD_DOCUMENTATION)
# generation of Easy3D documentation requires doxygen
find_package(Doxygen)
if (${DOXYGEN_FOUND})
message(STATUS "Found Doxygen: " ${DOXYGEN_EXECUTABLE})
# configures Doxygen
configure_file(docs/Doxyfile.in Doxyfile @ONLY)
add_custom_target(Documentation ALL ${DOXYGEN_EXECUTABLE} Doxyfile
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMENT "Generating Doxygen documentation")
else ()
message(WARNING "Building documentation requires Doxygen but Doxygen was not found. Building documentation is "
"thus disabled. You can set 'DOXYGEN_EXECUTABLE' to the directory containing the Doxygen executable "
"if Doxygen already exists (otherwise install Doxygen first).")
endif ()
endif ()
################################################################################
install(DIRECTORY
"${Easy3D_ROOT}/resources/fonts"
"${Easy3D_ROOT}/resources/shaders"
"${Easy3D_ROOT}/resources/colormaps"
"${Easy3D_ROOT}/resources/textures"
DESTINATION
"${Easy3D_INSTALL_RESOURCE_DIR}")
install(FILES
"${Easy3D_ROOT}/ReadMe.md"
"${Easy3D_ROOT}/LICENSE"
DESTINATION
"${CMAKE_INSTALL_PREFIX}"
)
install(DIRECTORY
"${Easy3D_EXPORT_INCLUDE_DIR}/easy3d"
DESTINATION
"${Easy3D_INSTALL_INCLUDE_DIR}")
################################################################################
### Summary
message(STATUS "****************************************************************************")
message(STATUS " Package : Easy3D")
message(STATUS " Version : ${Easy3D_VERSION_STRING}")
message(STATUS " Generator : ${CMAKE_GENERATOR}")
if (CMAKE_CONFIGURATION_TYPES)
message(STATUS " Configuration : ${CMAKE_CONFIGURATION_TYPES}")
elseif (CMAKE_BUILD_TYPE)
message(STATUS " Build type : ${CMAKE_BUILD_TYPE}")
endif ()
if (CMAKE_SIZEOF_VOID_P EQUAL 8)
message(STATUS " System : 64-bit ${CMAKE_SYSTEM_NAME}")
elseif (CMAKE_SIZEOF_VOID_P EQUAL 4)
message(STATUS " System : 32-bit ${CMAKE_SYSTEM_NAME}")
message(FATAL_ERROR "32-bit not supported! You should specify CMake option '-DCMAKE_GENERATOR_PLATFORM=x64'")
endif ()
if (APPLE)
message(STATUS " Minimum macOS support : ${CMAKE_OSX_DEPLOYMENT_TARGET}")
mark_as_advanced(CMAKE_OSX_ARCHITECTURES)
endif ()
message(STATUS "----------------------------------------------------------------------------")
message(STATUS " Build shared libraries : ${Easy3D_BUILD_SHARED_LIBS}")
message(STATUS " Build tutorials : ${Easy3D_BUILD_TUTORIALS}")
message(STATUS " Build documentation : ${Easy3D_BUILD_DOCUMENTATION}")
message(STATUS " Build tests : ${Easy3D_BUILD_TESTS}")
message(STATUS " Build Python bindings : ${Easy3D_BUILD_PYTHON_BINDINGS}")
message(STATUS " With CGAL (>= v5.1) : ${Easy3D_ENABLE_CGAL}")
message(STATUS " With Qt (>= v5.6) : ${Easy3D_ENABLE_QT}")
message(STATUS " With ffmpeg (>= v3.4) : ${Easy3D_ENABLE_FFMPEG}")
message(STATUS "----------------------------------------------------------------------------")
message(STATUS " Build directory : ${Easy3D_BINARY_DIR}")
message(STATUS " Installation directory : ${CMAKE_INSTALL_PREFIX}")
if (Easy3D_BUILD_PYTHON_BINDINGS)
message(STATUS " Bindings directory : ${Easy3D_PYTHON_PACKAGE_DIR}")
endif ()
message(STATUS "****************************************************************************")