CMakeLists.txt

# Copyright 2016 MongoDB Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

cmake_minimum_required(VERSION 3.2 FATAL_ERROR)

if(POLICY CMP0025)
  cmake_policy(SET CMP0025 NEW)
endif()

project(MONGO_CXX_DRIVER LANGUAGES CXX)

if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
  if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.8.2")
    message(FATAL_ERROR "Insufficient GCC version - GCC 4.8.2+ required")
  endif()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
  if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "19.0.23506")
    message(FATAL_ERROR "Insufficient Microsoft Visual C++ version - MSVC 2015 Update 1+ required")
  endif()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
  if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "5.1")
    message(FATAL_ERROR "Insufficient Apple clang version - XCode 5.1+ required")
  endif()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
  if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "3.5")
    message(FATAL_ERROR "Insufficient clang version - clang 3.5+ required")
  endif()
else()
  message(WARNING "Unknown compiler... recklessly proceeding without a version check")
endif()

# All of our target compilers support the deprecated
# attribute. Normally, we would just let the GenerateExportHeader
# subsystem do this via configure check, but there appears to be a
# CMake bug where if -Werror is set on the command line, it breaks the
# configure check, and we end up not configuring the macro. That means
# that we end up not being able to turn deprecation warnings into
# errors. Instead, since we know all our platforms offer the feature,
# just hard enable it here.
if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
  set(COMPILER_HAS_DEPRECATED true)
else()
  set(COMPILER_HAS_DEPRECATED_ATTR true)
endif()

set (CMAKE_SKIP_BUILD_RPATH false)
set (CMAKE_BUILD_WITH_INSTALL_RPATH false)
set (CMAKE_INSTALL_RPATH_USE_LINK_PATH true)
# Ensure that RPATH is used on OSX
set(CMAKE_MACOSX_RPATH 1)

# Enforce the C++ standard, and disable extensions
if(NOT DEFINED CMAKE_CXX_STANDARD)
    set(CMAKE_CXX_STANDARD 11)
endif()

set(CMAKE_CXX_EXTENSIONS OFF)

# Include the required modules
include(GenerateExportHeader)
include(InstallRequiredSystemLibraries)

# Allow the user to decide whether to build the shared libaries or the static libraries.
option(BUILD_SHARED_LIBS "Build shared libraries" ON)
set(BUILD_VERSION "0.0.0" CACHE STRING "Library version (for both libbsoncxx and libmongocxx)")

# If the user did not customize the install prefix,
# set it to live under build so we don't inadverently pollute /usr/local
if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
    set (CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/install" CACHE PATH "default install path" FORCE)
endif()

set(CMAKE_MODULE_PATH
   ${CMAKE_MODULE_PATH}
   ${PROJECT_SOURCE_DIR}/cmake
)

include(GNUInstallDirs)
include (ParseVersion)

if(BUILD_VERSION STREQUAL "0.0.0")
    if(EXISTS ${CMAKE_BINARY_DIR}/VERSION_CURRENT)
        file(STRINGS ${CMAKE_BINARY_DIR}/VERSION_CURRENT BUILD_VERSION)
    else()
        find_package(PythonInterp)
        if(PYTHONINTERP_FOUND)
            execute_process(
                COMMAND ${PYTHON_EXECUTABLE} etc/calc_release_version.py
                WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
                OUTPUT_VARIABLE CALC_RELEASE_VERSION
                RESULT_VARIABLE CALC_RELEASE_VERSION_RESULT
            )
            if(NOT CALC_RELEASE_VERSION_RESULT STREQUAL 0)
                # If python failed above, stderr would tell the user about it
                message(WARNING
                    "BUILD_VERSION not specified and could not be calculated\
 (script invocation failed); setting library version to 0.0.0"
                )
            else()
                set(BUILD_VERSION ${CALC_RELEASE_VERSION})
            endif()
        else()
            message(WARNING
                "BUILD_VERSION not specified and could not be calculated\
 (Python was not found on the system); setting library version to 0.0.0"
            )
        endif()
    endif()
endif()

if(NOT CMAKE_BUILD_TYPE)
    message(STATUS "No build type selected, default is Release")
    set(CMAKE_BUILD_TYPE "Release")
endif()

set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

add_custom_target(hugo_dir
    COMMAND ${CMAKE_COMMAND} -E make_directory hugo
)

add_custom_target(hugo
    DEPENDS hugo_dir
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/docs
    COMMAND hugo
    VERBATIM
)

add_custom_target(hugo-deploy
    DEPENDS hugo
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
    COMMAND etc/deploy-to-ghpages.pl --hugo git@github.com:mongodb/mongo-cxx-driver
    VERBATIM
)

add_custom_target(docs_dir_current
    COMMAND ${CMAKE_COMMAND} -E make_directory docs/api/current
)

add_custom_target(doxygen-current
    DEPENDS docs_dir_current
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
    COMMAND doxygen ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile
    VERBATIM
)

add_custom_target(doxygen-all
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
    COMMAND etc/generate-all-apidocs.pl
    VERBATIM
)

add_custom_target(doxygen-deploy
    DEPENDS doxygen-all
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
    COMMAND etc/deploy-to-ghpages.pl --doxygen git@github.com:mongodb/mongo-cxx-driver
    VERBATIM
)

add_custom_target(format
    python ${CMAKE_SOURCE_DIR}/etc/clang_format.py format
    VERBATIM
)

add_custom_target(format-lint
    python ${CMAKE_SOURCE_DIR}/etc/clang_format.py lint
    VERBATIM
)

add_custom_target(docs
    DEPENDS hugo doxygen-current
)

set(THIRD_PARTY_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src/third_party)

enable_testing()

add_subdirectory(src)

add_subdirectory(examples EXCLUDE_FROM_ALL)

add_subdirectory(benchmark EXCLUDE_FROM_ALL)