125 lines
4.5 KiB
CMake
125 lines
4.5 KiB
CMake
# based on https://github.com/bluescarni/yacma
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include(CheckCXXCompilerFlag)
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macro(CHECK_ENABLE_CXX_FLAG flag)
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set(CMAKE_REQUIRED_QUIET TRUE)
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check_cxx_compiler_flag("${flag}" CHECK_CXX_FLAG)
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unset(CMAKE_REQUIRED_QUIET)
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if(CHECK_CXX_FLAG)
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message(STATUS "'${flag}': flag is enabled.")
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add_compile_options("${flag}")
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else()
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message(STATUS "'${flag}': flag is NOT supported.")
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endif()
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# NOTE: check_cxx_compiler stores variables in the cache.
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unset(CHECK_CXX_FLAG CACHE)
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endmacro()
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# Common configuration for GCC, clang and Intel.
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if(CMAKE_CXX_COMPILER_IS_CLANG
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OR CMAKE_CXX_COMPILER_IS_INTEL
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OR CMAKE_CXX_COMPILER_IS_GCC)
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set(CMAKE_CXX_STANDARD 11)
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set(CMAKE_CXX_STANDARD_REQUIRED YES)
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set(CMAKE_CXX_EXTENSIONS YES)
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if(CMAKE_BUILD_TYPE STREQUAL "Debug")
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check_enable_cxx_flag(-Wall)
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check_enable_cxx_flag(-Wextra)
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check_enable_cxx_flag(-Wnon-virtual-dtor)
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check_enable_cxx_flag(-Wnoexcept)
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check_enable_cxx_flag(-Wlogical-op)
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check_enable_cxx_flag(-Wconversion)
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check_enable_cxx_flag(-Wdeprecated)
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# This limit is supposed to be at least 1024 in C++11, but for some reason
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# clang sets this to 256, and gcc to 900.
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check_enable_cxx_flag(-ftemplate-depth=1024)
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check_enable_cxx_flag(-Wold-style-cast)
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check_enable_cxx_flag(-Wdisabled-optimization)
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# This is useful when the compiler decides the template backtrace is too
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# verbose.
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check_enable_cxx_flag(-ftemplate-backtrace-limit=0)
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check_enable_cxx_flag(-fstack-protector-all)
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# A few suggestion flags.
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check_enable_cxx_flag(-Wsuggest-attribute=pure)
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check_enable_cxx_flag(-Wsuggest-attribute=const)
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check_enable_cxx_flag(-Wsuggest-attribute=noreturn)
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check_enable_cxx_flag(-Wsuggest-attribute=format)
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# From GCC 5.
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check_enable_cxx_flag(-Wodr)
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check_enable_cxx_flag(-Wsuggest-final-types)
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check_enable_cxx_flag(-Wsuggest-final-methods)
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check_enable_cxx_flag(-Wsuggest-override)
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# From GCC 6.
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check_enable_cxx_flag(-Wshift-negative-value)
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check_enable_cxx_flag(-Wshift-overflow=2)
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check_enable_cxx_flag(-Wduplicated-cond)
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check_enable_cxx_flag(-Wnull-dereference)
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# From GCC 7.
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check_enable_cxx_flag(-Wrestrict)
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check_enable_cxx_flag(-Waligned-new)
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# From GCC 8.
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check_enable_cxx_flag(-Wcast-align=strict)
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# This is supposed to produce a nice graphical visualization of mismatching
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# template errors.
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check_enable_cxx_flag(-fdiagnostics-show-template-tree)
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check_enable_cxx_flag(-fdiagnostics-show-option)
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check_enable_cxx_flag(-pedantic)
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check_enable_cxx_flag(-Wcast-align)
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check_enable_cxx_flag(-Wcast-qual)
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check_enable_cxx_flag(-Wctor-dtor-privacy)
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check_enable_cxx_flag(-Wdisabled-optimization)
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check_enable_cxx_flag(-Wformat=2)
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check_enable_cxx_flag(-Winit-self)
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check_enable_cxx_flag(-Wmissing-include-dirs)
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check_enable_cxx_flag(-Woverloaded-virtual)
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check_enable_cxx_flag(-Wredundant-decls)
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check_enable_cxx_flag(-Wsign-promo)
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check_enable_cxx_flag(-Wstrict-overflow=5)
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check_enable_cxx_flag(-Wundef)
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check_enable_cxx_flag(-Wno-unused)
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check_enable_cxx_flag(-Wno-variadic-macros)
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check_enable_cxx_flag(-Wno-parentheses)
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check_enable_cxx_flag(-Wstrict-null-sentinel)
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check_enable_cxx_flag(-Wshadow-all)
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endif()
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if(CMAKE_BUILD_TYPE STREQUAL "Release")
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check_enable_cxx_flag(-flto)
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if(CMAKE_CXX_COMPILER_IS_GCC
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AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "4.8")
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# Doesn't work with GCC 4.7.2 in Astra Linux 1.5
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check_enable_cxx_flag(-fno-fat-lto-objects)
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endif()
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endif()
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endif()
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if(CMAKE_CXX_COMPILER_IS_GCC)
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check_enable_cxx_flag(-fdiagnostics-color=auto)
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# The -Wmaybe-uninitialized flag is enabled by -Wall,
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# but it is known to emit a lot of possibly spurious warnings.
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# Let's just disable it.
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check_enable_cxx_flag(-Wno-maybe-uninitialized)
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if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "5.999")
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# NOTE: GCC >= 6 seems to be wrongly warning about visibility attributes
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# in some situations:
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80947
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# Let's just disable the warning for now.
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check_enable_cxx_flag(-Wno-attributes)
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endif()
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if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "4.799")
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# -Wshadow gives a lot of false positives with GCC 4.7.2 in Astra Linux 1.5
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check_enable_cxx_flag(-Wshadow)
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endif()
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endif()
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if(CMAKE_SYSTEM_PROCESSOR STREQUAL "e2k")
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check_enable_cxx_flag(-Wno-invalid-offsetof)
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add_definitions(-DQT_NO_VERSION_TAGGING)
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list(APPEND CMAKE_LIBRARY_PATH "/usr/lib/e2k-linux-gnu")
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endif()
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