mirror of
https://gitee.com/zyjblog/oatpp.git
synced 2024-12-22 22:16:37 +08:00
104c4eb011
Fix compiler warnings (-Wsign-compare)
284 lines
9.1 KiB
CMake
284 lines
9.1 KiB
CMake
###################################################################################################
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## INCLUDES #######################################################################################
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###################################################################################################
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include(CheckCXXCompilerFlag)
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###################################################################################################
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## FUNCTIONS ######################################################################################
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###################################################################################################
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#
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# Add compiler flags without test (assume they are supported)
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#
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function(add_cxx_compiler_flags_no_test var)
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foreach(flag ${ARGN})
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set(${var} "${${var}} ${flag}")
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endforeach()
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set(${var} "${${var}}" PARENT_SCOPE)
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endfunction()
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#
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# Add compiler flags with test (do not assume they are supported)
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#
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function(add_cxx_compiler_flags var)
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foreach(flag ${ARGN})
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string(REGEX REPLACE "[^a-zA-Z0-9]+" "_" flag_var "CXXFLAG_${flag}")
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check_cxx_compiler_flag("${flag}" ${flag_var})
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if(${flag_var})
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set(${var} "${${var}} ${flag}")
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endif()
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endforeach()
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set(${var} "${${var}}" PARENT_SCOPE)
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endfunction()
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#
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# Add compiler flags
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#
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function(add_compiler_flags version)
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if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL ${version})
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foreach(flag ${ARGN})
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add_cxx_compiler_flags_no_test(CMAKE_CXX_FLAGS ${flag})
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" PARENT_SCOPE)
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endforeach()
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else (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL ${version})
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foreach(flag ${ARGN})
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add_cxx_compiler_flags(CMAKE_CXX_FLAGS ${flag})
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" PARENT_SCOPE)
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endforeach()
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endif (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL ${version})
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endfunction()
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#
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# Remove compiler flags
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#
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function(remove_any_compiler_flags var)
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foreach(flag ${ARGN})
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string(REPLACE "${flag}" "" ${var} "${${var}}")
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string(REGEX REPLACE "[ \t]+" " " ${var} "${${var}}")
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endforeach()
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set(${var} "${${var}}" PARENT_SCOPE)
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endfunction()
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function(remove_compiler_flags)
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foreach(flag ${ARGN})
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remove_any_compiler_flags(CMAKE_CXX_FLAGS "${flag}")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" PARENT_SCOPE)
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endforeach()
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endfunction()
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#
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# Save and Restore compiler flags
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#
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function(save_compiler_flags)
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set(CMAKE_CXX_FLAGS_SAVED "${CMAKE_CXX_FLAGS}" CACHE STRING "Saved compiler C++ flags" FORCE)
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endfunction()
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function(restore_compiler_flags)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS_SAVED}" )
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" PARENT_SCOPE)
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endfunction()
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###################################################################################################
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## COMPILER FLAGS #################################################################################
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###################################################################################################
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string(TOLOWER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_LOWER)
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#
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# Generic flags
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#
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if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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add_compiler_flags(4.6 "-Wall")
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add_compiler_flags(4.6 "-Wextra")
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endif (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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#
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# Preserve debug information flags
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#
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if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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add_compiler_flags(4.6 "-g3")
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endif (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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#
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# C/C++ Warning Flags
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# See https://github.com/vadz/gcc-warnings-tools for gcc flags and versions
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#
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if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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add_compiler_flags(4.6 "-Wcast-align")
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add_compiler_flags(4.6 "-Wconversion")
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add_compiler_flags(4.6 "-Wdouble-promotion")
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add_compiler_flags(4.6 "-Winvalid-pch")
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add_compiler_flags(4.6 "-Wmissing-declarations")
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add_compiler_flags(4.6 "-Wmissing-format-attribute")
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add_compiler_flags(4.6 "-Wmissing-include-dirs")
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add_compiler_flags(4.6 "-Wpointer-arith")
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add_compiler_flags(4.6 "-Wredundant-decls")
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add_compiler_flags(4.6 "-Wshadow")
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#add_compiler_flags(4.6 "-Wsign-conversion")
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#add_compiler_flags(4.6 "-Wsuggest-attribute=const")
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add_compiler_flags(4.6 "-Wsuggest-attribute=noreturn")
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#add_compiler_flags(4.6 "-Wsuggest-attribute=pure")
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add_compiler_flags(4.6 "-Wswitch-default")
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add_compiler_flags(4.6 "-Wswitch-enum")
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add_compiler_flags(4.6 "-Wtype-limits")
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add_compiler_flags(4.6 "-Wundef")
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add_compiler_flags(4.6 "-Wuninitialized")
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add_compiler_flags(4.6 "-Wunknown-pragmas")
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add_compiler_flags(4.6 "-Wunsafe-loop-optimizations")
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add_compiler_flags(4.6 "-Wunused-but-set-parameter")
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add_compiler_flags(4.6 "-Wunused-but-set-variable")
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add_compiler_flags(4.6 "-Wunused-function")
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add_compiler_flags(4.6 "-Wunused")
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add_compiler_flags(4.6 "-Wunused-label")
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add_compiler_flags(4.6 "-Wunused-macros")
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#add_compiler_flags(4.6 "-Wunused-parameter")
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add_compiler_flags(4.6 "-Wunused-result")
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add_compiler_flags(4.6 "-Wunused-value")
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add_compiler_flags(4.6 "-Wunused-variable")
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add_compiler_flags(4.7 "-Wunused-local-typedefs")
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add_compiler_flags(4.8 "-Wformat=2")
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add_compiler_flags(4.8 "-Wsuggest-attribute=format")
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add_compiler_flags(5.1 "-Wformat-signedness")
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#add_compiler_flags(5.1 "-Wsuggest-final-methods")
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#add_compiler_flags(5.1 "-Wsuggest-final-types")
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add_compiler_flags(6.1 "-Wduplicated-cond")
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add_compiler_flags(6.1 "-Wlogical-op")
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add_compiler_flags(6.1 "-Wnull-dereference")
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add_compiler_flags(7.1 "-Wduplicated-branches")
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add_compiler_flags(7.1 "-Wformat-overflow=2")
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add_compiler_flags(7.1 "-Wformat-truncation=2")
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#add_compiler_flags(8.1 "-Wcast-align=strict")
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add_compiler_flags(8.1 "-Wsuggest-attribute=cold")
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add_compiler_flags(8.1 "-Wsuggest-attribute=malloc")
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add_compiler_flags(10.1 "-Warith-conversion")
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add_compiler_flags(12.1 "-ftrivial-auto-var-init=zero")
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add_compiler_flags(12.1 "-Warray-compare")
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add_compiler_flags(12.1 "-Wbidi-chars=unpaired,ucn")
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add_compiler_flags(12.1 "-Winfinite-recursion")
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add_compiler_flags(12.1 "-Wopenacc-parallelism")
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add_compiler_flags(12.1 "-Wtrivial-auto-var-init")
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endif (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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#
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# C++ Warning Flags
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# See https://github.com/vadz/gcc-warnings-tools for gcc flags and versions
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#
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if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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add_compiler_flags(4.6 "-Wctor-dtor-privacy")
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add_compiler_flags(4.6 "-Wnoexcept")
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add_compiler_flags(4.6 "-Wold-style-cast")
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add_compiler_flags(4.6 "-Woverloaded-virtual")
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add_compiler_flags(4.6 "-Wsign-promo")
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add_compiler_flags(4.6 "-Wstrict-null-sentinel")
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add_compiler_flags(4.7 "-Wzero-as-null-pointer-constant")
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add_compiler_flags(4.8 "-Wuseless-cast")
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add_compiler_flags(4.9 "-Wconditionally-supported")
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add_compiler_flags(5.1 "-Wsuggest-override")
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add_compiler_flags(7.1 "-Wnoexcept-type")
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add_compiler_flags(8.1 "-Wextra-semi")
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add_compiler_flags(10.1 "-Wcomma-subscript")
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add_compiler_flags(10.1 "-Wmismatched-tags")
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add_compiler_flags(10.1 "-Wredundant-tags")
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add_compiler_flags(10.1 "-Wvolatile")
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add_compiler_flags(11.1 "-Wctad-maybe-unsupported")
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add_compiler_flags(11.1 "-Wdeprecated-enum-enum-conversion")
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add_compiler_flags(11.1 "-Wdeprecated-enum-float-conversion")
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add_compiler_flags(11.1 "-Winvalid-imported-macros")
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add_compiler_flags(11.1 "-Wrange-loop-construct")
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endif (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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#
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# Allow the linker to remove unused data and functions
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#
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if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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add_compiler_flags(4.6 "-fdata-sections")
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add_compiler_flags(4.6 "-ffunction-sections")
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add_compiler_flags(4.6 "-fno-common")
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add_compiler_flags(4.6 "-Wl,--gc-sections")
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endif (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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#
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# Hardening flags
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# See https://developers.redhat.com/blog/2018/03/21/compiler-and-linker-flags-gcc
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#
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if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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IF (NOT CMAKE_BUILD_TYPE_LOWER STREQUAL "debug")
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add_cxx_compiler_flags_no_test(CMAKE_CXX_FLAGS "-D_FORTIFY_SOURCE=2")
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ENDIF (NOT CMAKE_BUILD_TYPE_LOWER STREQUAL "debug")
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add_cxx_compiler_flags_no_test(CMAKE_CXX_FLAGS "-D_GLIBCXX_ASSERTIONS")
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add_compiler_flags(4.6 "-fasynchronous-unwind-tables")
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add_compiler_flags(4.6 "-fexceptions")
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add_compiler_flags(4.6 "-fstack-clash-protection")
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add_compiler_flags(4.6 "-fstack-protector-strong")
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add_compiler_flags(4.6 "-grecord-gcc-switches")
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add_compiler_flags(4.6 "-fcf-protection")
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add_compiler_flags(4.6 "-pipe")
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add_compiler_flags(4.6 "-Werror=format-security")
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add_compiler_flags(4.6 "-Wno-format-nonliteral")
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add_compiler_flags(4.6 "-fPIE")
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add_compiler_flags(4.6 "-Wl,-z,defs")
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add_compiler_flags(4.6 "-Wl,-z,now")
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add_compiler_flags(4.6 "-Wl,-z,relro")
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endif (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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#
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# Profiling and Debugging
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# See https://fedoraproject.org/wiki/Changes/fno-omit-frame-pointer
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#
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#if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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# add_compiler_flags(4.6 "-fno-omit-frame-pointer")
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#endif (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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#
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# Disable some warnings
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#
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if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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add_compiler_flags(4.6 "-Wno-unused-parameter")
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add_compiler_flags(9.1 "-Wno-pessimizing-move")
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endif (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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#
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# Sanitize flags
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#
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#if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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# add_compiler_flags(4.6 "-fsanitize=address")
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# add_compiler_flags(4.6 "-fsanitize=thread")
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#endif (CMAKE_CXX_COMPILER_ID MATCHES GNU)
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