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897fe2a01b
Enable CI to report -Wunreachable-code-aggressive warnings in clang builds which covers all, -Wunreachable-code, -code-break, -code-return.
121 lines
4.1 KiB
CMake
121 lines
4.1 KiB
CMake
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# Copyright Catch2 Authors
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# Distributed under the Boost Software License, Version 1.0.
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# (See accompanying file LICENSE.txt or copy at
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# https://www.boost.org/LICENSE_1_0.txt)
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# SPDX-License-Identifier: BSL-1.0
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include(CheckCXXCompilerFlag)
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function(add_cxx_flag_if_supported_to_targets flagname targets)
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string(MAKE_C_IDENTIFIER ${flagname} flag_identifier )
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check_cxx_compiler_flag("${flagname}" HAVE_FLAG_${flag_identifier})
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if (HAVE_FLAG_${flag_identifier})
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foreach(target ${targets})
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target_compile_options(${target} PRIVATE ${flagname})
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endforeach()
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endif()
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endfunction()
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# Assumes that it is only called for development builds, where warnings
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# and Werror is desired, so it also enables Werror.
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function(add_warnings_to_targets targets)
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LIST(LENGTH targets TARGETS_LEN)
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# For now we just assume 2 possibilities: msvc and msvc-like compilers,
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# and other.
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if (MSVC)
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foreach(target ${targets})
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# Force MSVC to consider everything as encoded in utf-8
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target_compile_options( ${target} PRIVATE /utf-8 )
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# Enable Werror equivalent
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if (CATCH_ENABLE_WERROR)
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target_compile_options( ${target} PRIVATE /WX )
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endif()
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# MSVC is currently handled specially
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if ( CMAKE_CXX_COMPILER_ID MATCHES "MSVC" )
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STRING(REGEX REPLACE "/W[0-9]" "/W4" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS}) # override default warning level
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target_compile_options( ${target} PRIVATE /w44265 /w44061 /w44062 /w45038 )
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endif()
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endforeach()
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endif()
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if (NOT MSVC)
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set(CHECKED_WARNING_FLAGS
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"-Wabsolute-value"
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"-Wall"
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"-Wc++20-compat"
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"-Wcall-to-pure-virtual-from-ctor-dtor"
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"-Wcast-align"
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"-Wcatch-value"
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"-Wdangling"
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"-Wdeprecated"
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"-Wdeprecated-register"
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"-Wexceptions"
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"-Wexit-time-destructors"
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"-Wextra"
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"-Wextra-semi"
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"-Wfloat-equal"
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"-Wglobal-constructors"
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"-Winit-self"
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"-Wmisleading-indentation"
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"-Wmismatched-new-delete"
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"-Wmismatched-return-types"
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"-Wmismatched-tags"
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"-Wmissing-braces"
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"-Wmissing-declarations"
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"-Wmissing-noreturn"
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"-Wmissing-prototypes"
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"-Wmissing-variable-declarations"
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"-Wnull-dereference"
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"-Wold-style-cast"
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"-Woverloaded-virtual"
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"-Wparentheses"
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"-Wpedantic"
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"-Wreorder"
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"-Wreturn-std-move"
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"-Wshadow"
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"-Wstrict-aliasing"
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"-Wsuggest-destructor-override"
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"-Wsuggest-override"
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"-Wundef"
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"-Wuninitialized"
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"-Wunneeded-internal-declaration"
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"-Wunreachable-code-aggressive"
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"-Wunused"
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"-Wunused-function"
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"-Wunused-parameter"
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"-Wvla"
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"-Wweak-vtables"
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# This is a useful warning, but our tests sometimes rely on
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# functions being present, but not picked (e.g. various checks
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# for stringification implementation ordering).
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# Ergo, we should use it every now and then, but we cannot
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# enable it by default.
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# "-Wunused-member-function"
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)
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foreach(warning ${CHECKED_WARNING_FLAGS})
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add_cxx_flag_if_supported_to_targets(${warning} "${targets}")
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endforeach()
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if (CATCH_ENABLE_WERROR)
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foreach(target ${targets})
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# Enable Werror equivalent
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target_compile_options( ${target} PRIVATE -Werror )
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endforeach()
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endif()
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endif()
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endfunction()
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# Adds flags required for reproducible build to the target
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# Currently only supports GCC and Clang
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function(add_build_reproducibility_settings target)
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# Make the build reproducible on versions of g++ and clang that supports -ffile-prefix-map
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if((CMAKE_CXX_COMPILER_ID STREQUAL "GNU") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
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add_cxx_flag_if_supported_to_targets("-ffile-prefix-map=${CATCH_DIR}/=" "${target}")
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endif()
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endfunction()
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