89 lines
3.7 KiB
CMake
89 lines
3.7 KiB
CMake
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# minimum CMake version required for C++20 support, among other things
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cmake_minimum_required(VERSION 3.15)
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# detect if gilles is being used as a sub-project of another CMake project
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if(NOT DEFINED PROJECT_NAME)
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set(GILLES_SUBPROJECT OFF)
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else()
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set(GILLES_SUBPROJECT ON)
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endif()
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SET_SOURCE_FILES_PROPERTIES( src/gilles.c PROPERTIES LANGUAGE C)
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set(CMAKE_BUILD_TYPE Debug)
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project(gilles)
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set(CMAKE_EXE_LINKER_FLAGS "-Wl,--no-as-needed -ldl")
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find_package(eclipse-paho-mqtt-c REQUIRED)
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add_subdirectory(src/gilles/gameloop)
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add_subdirectory(src/gilles/simulatorapi)
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add_subdirectory(src/gilles/helper)
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add_subdirectory(src/gilles/slog)
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add_executable(gilles src/gilles/gilles.c)
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target_link_libraries(gilles m ncurses argtable2 config gameloop helper slog simulatorapi eclipse-paho-mqtt-c::paho-mqtt3c)
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# used for enabling additional compiler options if supported
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include(CheckCXXCompilerFlag)
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function(enable_cxx_compiler_flag_if_supported flag)
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message(STATUS "[gilles] Checking if compiler supports warning flag '${flag}'")
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check_cxx_compiler_flag("${flag}" flag_supported)
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if(flag_supported)
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message(STATUS "[gilles] Enabling warning flag '${flag}'")
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target_compile_options(gilles INTERFACE "${flag}")
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endif()
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unset(flag_supported CACHE)
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endfunction()
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# enable a large amount of extra warnings, regardless of build mode
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if (MSVC) # MSVC supports different warning options to GCC/Clang
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enable_cxx_compiler_flag_if_supported("/W3") # set warning level 3
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# if tests are enabled, enable converting all warnings to errors too
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if (ENABLE_TESTS)
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# add_compile_options(/WX)
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enable_cxx_compiler_flag_if_supported("/WX")
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endif()
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else() # GCC/Clang warning option
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# NOTE: GCC and Clang support most of the same options, but neither supports all
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# of the others'. By only enabling them if supported, we get graceful failure
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# when trying to enable unsupported flags
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# e.g. at the time of writing, GCC does not support -Wdocumentation
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#
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# enable all warnings about 'questionable constructs'
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enable_cxx_compiler_flag_if_supported("-Wall")
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# issue 'pedantic' warnings for strict ISO compliance
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enable_cxx_compiler_flag_if_supported("-pedantic")
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# enable 'extra' strict warnings
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enable_cxx_compiler_flag_if_supported("-Wextra")
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# enable sign conversion warnings
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enable_cxx_compiler_flag_if_supported("-Wsign-conversion")
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# enable warnings about mistakes in Doxygen documentation
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enable_cxx_compiler_flag_if_supported("-Wdocumentation")
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# if tests are enabled, enable converting all warnings to errors too
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if (ENABLE_TESTS)
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enable_cxx_compiler_flag_if_supported("-Werror")
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# exclude the following kinds of warnings from being converted into errors
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# unknown-pragma is useful to have as a warning but not as an error, if you have
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# pragmas which are for the consumption of one compiler only
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enable_cxx_compiler_flag_if_supported("-Wno-error=unknown-pragmas")
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# unused variable and function warnings are helpful but we don't need them as errors
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enable_cxx_compiler_flag_if_supported("-Wno-error=unused-function")
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enable_cxx_compiler_flag_if_supported("-Wno-error=unused-variable")
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enable_cxx_compiler_flag_if_supported("-Wno-error=unused-parameter")
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enable_cxx_compiler_flag_if_supported("-Wno-error=unused-private-field")
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enable_cxx_compiler_flag_if_supported("-Wno-error=unused-but-set-variable")
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endif()
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endif()
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# library
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# unit tests --only enable if requested AND we're not building as a sub-project
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if(ENABLE_TESTS AND NOT gilles_SUBPROJECT)
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message(STATUS "[gilles] Unit Tests Enabled")
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add_subdirectory(tests)
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enable_testing()
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endif()
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