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# Project information

cmake_minimum_required(VERSION 3.14)

project(moderncpp VERSION 1.0.0)

set(CMAKE_CXX_STANDARD 17)

# To find or download packages

list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)

include(cmake/CPM.cmake)

option(CPM_USE_LOCAL_PACKAGES "Try `find_package` before downloading dependencies" ON)

# Options

option(BUILD_SNIPPETS "Build snippets" ON)

option(BUILD_EXAMPLES "Build examples" ON)

# The tray library is not being frequently maintained

# This example is not good for all operating systems

option(BUILD_TRAY "Build tray snippets" OFF)

option(BUILD_WITH_PEDANTIC_WARNINGS "Use pedantic warnings. This is useful for developers because many of these warnings will be in continuous integration anyway." OFF)

# Libraries

if (UNIX AND NOT APPLE)

find_package(Threads)

endif()

# Setting compiler options for snippets

# In a more serious project, we would do that per target

if (BUILD_WITH_PEDANTIC_WARNINGS)

if (MSVC)

add_compile_options(/W4 /WX)

else ()

add_compile_options(-Wall -Wextra -pedantic -Werror)

if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")

add_compile_options(-Wno-null-pointer-arithmetic -Wno-char-subscripts -Wno-c11-extensions)

elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")

add_compile_options(-Wno-error=class-memaccess -Wno-class-memaccess)

else ()

message(ERROR "Cannot disable the relevant warnings for ${CMAKE_CXX_COMPILER_ID}")

endif ()

endif ()

endif ()

if (MSVC)

add_compile_options(/EHsc)

endif()

if (BUILD_SNIPPETS)

add_subdirectory(snippets)

endif()

if (BUILD_EXAMPLES)

add_subdirectory(examples)

endif()