function(set_project_warnings project_name) option(WARNINGS_AS_ERRORS "Treat compiler warnings as errors" OFF) option(ENABLE_HARD_WARNINGS "Enable HARD warnings for static ananlyzer" OFF) set(MSVC_WARNINGS /W4 # Baseline reasonable warnings /w14242 # 'identifier': conversion from 'type1' to 'type1', possible loss of data /w14254 # 'operator': conversion from 'type1:field_bits' to 'type2:field_bits', possible loss of data /w14263 # 'function': member function does not override any base class virtual member function /w14265 # 'classname': class has virtual functions, but destructor is not virtual instances of this class may not # be destructed correctly /w14287 # 'operator': unsigned/negative constant mismatch /we4289 # nonstandard extension used: 'variable': loop control variable declared in the for-loop is used outside # the for-loop scope /w14296 # 'operator': expression is always 'boolean_value' /w14311 # 'variable': pointer truncation from 'type1' to 'type2' /w14545 # expression before comma evaluates to a function which is missing an argument list /w14546 # function call before comma missing argument list /w14547 # 'operator': operator before comma has no effect; expected operator with side-effect /w14549 # 'operator': operator before comma has no effect; did you intend 'operator'? /w14555 # expression has no effect; expected expression with side- effect /w14619 # pragma warning: there is no warning number 'number' /w14640 # Enable warning on thread un-safe static member initialization /w14826 # Conversion from 'type1' to 'type_2' is sign-extended. This may cause unexpected runtime behavior. /w14905 # wide string literal cast to 'LPSTR' /w14906 # string literal cast to 'LPWSTR' /w14928 # illegal copy-initialization; more than one user-defined conversion has been implicitly applied /permissive- # standards conformance mode for MSVC compiler. ) set(CLANG_WARNINGS -Wall -Wextra # reasonable and standard -Wshadow # warn the user if a variable declaration shadows one from a parent context -Wnon-virtual-dtor # warn the user if a class with virtual functions has a non-virtual destructor. This helps # catch hard to track down memory errors -Wold-style-cast # warn for c-style casts -Wcast-align # warn for potential performance problem casts -Wunused # warn on anything being unused -Woverloaded-virtual # warn if you overload (not override) a virtual function -Wpedantic # warn if non-standard C++ is used -Wconversion # warn on type conversions that may lose data -Wsign-conversion # warn on sign conversions -Wnull-dereference # warn if a null dereference is detected -Wdouble-promotion # warn if float is implicit promoted to double -Wformat=2 # warn on security issues around functions that format output (ie printf) -Wimplicit-fallthrough # warn on statements that fallthrough without an explicit annotation ) if(WARNINGS_AS_ERRORS AND NOT ENABLE_HARD_WARNINGS) set(CLANG_WARNINGS ${CLANG_WARNINGS} -Werror) set(MSVC_WARNINGS ${MSVC_WARNINGS} /WX) endif() set(GCC_WARNINGS ${CLANG_WARNINGS} -Wno-deprecated -Wmisleading-indentation # warn if indentation implies blocks where blocks do not exist -Wduplicated-cond # warn if if / else chain has duplicated conditions -Wduplicated-branches # warn if if / else branches have duplicated code -Wlogical-op # warn about logical operations being used where bitwise were probably wanted -Wuseless-cast # warn if you perform a cast to the same type #-Wsuggest-attribute=cold #-Wsuggest-attribute=format -Wsuggest-attribute=malloc -Wsuggest-attribute=noreturn -Wsuggest-attribute=pure #-Wsuggest-final-methods #-Wsuggest-final-types -Wsuggest-override -Wdiv-by-zero -Wanalyzer-double-fclose -Wanalyzer-double-free -Wanalyzer-malloc-leak -Wanalyzer-use-after-free ## some more analyzer flags -Wnonnull -Wnonnull-compare -Wnormalized=nfkc -Wnull-dereference -Wopenacc-parallelism -Wopenmp-simd -Wpmf-conversions -Waggressive-loop-optimizations -Wanalyzer-tainted-allocation-size -Wanalyzer-use-of-uninitialized-value -Wanalyzer-use-of-pointer-in-stale-stack-frame -Wanalyzer-free-of-non-heap -Wanalyzer-mismatching-deallocation -Wanalyzer-null-dereference -Wanalyzer-possible-null-dereference ) if(ENABLE_HARD_WARNINGS) set(CLANG_WARNINGS ${CLANG_WARNINGS} -Weverything -Wno-c++98-compat -Wno-c++98-compat-pedantic -Wno-c++11-compat -Wno-c++14-compat -Wno-documentation-unknown-command -Wno-reserved-identifier ) set(GCC_WARNINGS ${GCC_WARNINGS} -fanalyzer -Wanalyzer-too-complex ## just for testing -Weffc++ -Walloca -Walloc-zero -Wcannot-profile -Wcast-align -Wcast-align=strict -Wcast-function-type -Wcast-qual -Wcatch-value=3 -Wchar-subscripts -Wclass-conversion -Wclass-memaccess -Wclobbered -Wcomma-subscript -Wcomment -Wcomments -Wconditionally-supported -Wconversion -Wconversion-null -Wcoverage-invalid-line-number -Wcoverage-mismatch -Wcpp -Wctad-maybe-unsupported -Wctor-dtor-privacy -Wdangling-else -Wdangling-pointer=2 -Wdate-time -Wdelete-incomplete -Wdelete-non-virtual-dtor -Wframe-address -Wfree-nonheap-object -Whsa -Wlto-type-mismatch -Wno-namespaces -Wnarrowing -Wnoexcept -Wnoexcept-type -Wnon-template-friend -Wnon-virtual-dtor -Wodr -Wold-style-cast -Woverflow -Woverlength-strings -Woverloaded-virtual -Wpacked -Wpacked-bitfield-compat -Wpacked-not-aligned -Wno-padded -Wparentheses -Wpessimizing-move -Wplacement-new=2 -Wpragmas -Wprio-ctor-dtor -Wpsabi -Wrange-loop-construct -Wredundant-decls -Wredundant-move -Wredundant-tags -Wregister -Wscalar-storage-order -Wsequence-point -Wshadow=compatible-local -Wshadow=global -Wshadow=local -Wstack-protector -Wsync-nand -Wsynth -Wtsan -Wtype-limits -Wundef -Wuninitialized -Wunknown-pragmas -Wunreachable-code -Wunsafe-loop-optimizations -Wuse-after-free=3 -Wvector-operation-performance -Wvexing-parse -Wvirtual-inheritance -Wvirtual-move-assign -Wvla -Wvla-parameter -Wvolatile -Wvolatile-register-var -Wwrite-strings -Wzero-as-null-pointer-constant -Wzero-length-bounds -Wanalyzer-exposure-through-output-file -Wanalyzer-file-leak -Wanalyzer-null-argument -Wanalyzer-possible-null-argument -Wanalyzer-shift-count-negative -Wanalyzer-shift-count-overflow -Wanalyzer-stale-setjmp-buffer -Wanalyzer-unsafe-call-within-signal-handler -Wanalyzer-write-to-const -Wanalyzer-write-to-string-literal ) endif() if(MSVC) set(PROJECT_WARNINGS ${MSVC_WARNINGS}) elseif(CMAKE_CXX_COMPILER_ID MATCHES ".*Clang") set(PROJECT_WARNINGS ${CLANG_WARNINGS}) elseif(CMAKE_CXX_COMPILER_ID STREQUAL "GNU") set(PROJECT_WARNINGS ${GCC_WARNINGS}) else() message(AUTHOR_WARNING "No compiler warnings set for '${CMAKE_CXX_COMPILER_ID}' compiler.") endif() target_compile_options(${project_name} INTERFACE ${PROJECT_WARNINGS}) endfunction()