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maintainer.cmake
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# Copyright (c) 2010, 2024, Oracle and/or its affiliates.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2.0,
# as published by the Free Software Foundation.
#
# This program is designed to work with certain software (including
# but not limited to OpenSSL) that is licensed under separate terms,
# as designated in a particular file or component or in included license
# documentation. The authors of MySQL hereby grant you an additional
# permission to link the program and your derivative works with the
# separately licensed software that they have either included with
# the program or referenced in the documentation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License, version 2.0, for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
MACRO(MY_ADD_C_WARNING_FLAG WARNING_FLAG)
MY_CHECK_C_COMPILER_FLAG("-${WARNING_FLAG}" HAVE_${WARNING_FLAG})
IF(HAVE_${WARNING_FLAG})
STRING_APPEND(MY_C_WARNING_FLAGS " -${WARNING_FLAG}")
ENDIF()
ENDMACRO()
MACRO(MY_ADD_CXX_WARNING_FLAG WARNING_FLAG)
MY_CHECK_CXX_COMPILER_WARNING("-${WARNING_FLAG}" HAS_FLAG)
IF(HAS_FLAG)
STRING_APPEND(MY_CXX_WARNING_FLAGS " -${WARNING_FLAG}")
ENDIF()
ENDMACRO()
MACRO(DISABLE_DOCUMENTATION_WARNINGS)
STRING(REPLACE "-Wdocumentation" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
STRING(REPLACE "-Wdocumentation" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
ENDMACRO()
#
# Common flags for all versions/compilers
#
# Common warning flags for GCC, G++, Clang and Clang++
SET(MY_WARNING_FLAGS
"-Wall -Wextra -Wformat-security -Wvla -Wundef -Wmissing-format-attribute")
# Clang 6.0 and newer on Windows treat -Wall as -Weverything; use /W4 instead
IF(WIN32_CLANG)
STRING(REPLACE "-Wall -Wextra" "/W4" MY_WARNING_FLAGS "${MY_WARNING_FLAGS}")
ENDIF()
# Common warning flags for GCC and Clang
SET(MY_C_WARNING_FLAGS "${MY_WARNING_FLAGS} -Wwrite-strings")
# Common warning flags for G++ and Clang++
SET(MY_CXX_WARNING_FLAGS "${MY_WARNING_FLAGS} -Woverloaded-virtual -Wcast-qual")
IF(MY_COMPILER_IS_GNU)
# Accept only the standard [[fallthrough]] attribute, no comments.
MY_ADD_CXX_WARNING_FLAG("Wimplicit-fallthrough=5")
MY_ADD_C_WARNING_FLAG("Wjump-misses-init")
# This is included in -Wall on some platforms, enable it explicitly.
MY_ADD_C_WARNING_FLAG("Wstringop-truncation")
MY_ADD_CXX_WARNING_FLAG("Wstringop-truncation")
MY_ADD_CXX_WARNING_FLAG("Wsuggest-override")
MY_ADD_C_WARNING_FLAG("Wmissing-include-dirs")
MY_ADD_CXX_WARNING_FLAG("Wmissing-include-dirs")
MY_ADD_CXX_WARNING_FLAG("Wextra-semi") # For gcc8 and up
ENDIF()
#
# Extra flags not supported on all versions/compilers
#
# Only for C++ as C code has some macro usage that is difficult to avoid
IF(MY_COMPILER_IS_GNU)
MY_ADD_CXX_WARNING_FLAG("Wlogical-op")
ENDIF()
# Extra warning flags for Clang/Clang++
IF(MY_COMPILER_IS_CLANG)
STRING_APPEND(MY_C_WARNING_FLAGS " -Wconditional-uninitialized")
STRING_APPEND(MY_C_WARNING_FLAGS " -Wextra-semi")
STRING_APPEND(MY_C_WARNING_FLAGS " -Wmissing-noreturn")
MY_ADD_C_WARNING_FLAG("Wunreachable-code-break")
MY_ADD_C_WARNING_FLAG("Wunreachable-code-return")
MY_ADD_C_WARNING_FLAG("Wstring-concatenation")
IF(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 11)
# require clang-11 or later when enabling -Wdocumentation to workaround
#
# https://bugs.llvm.org/show_bug.cgi?id=38905
MY_ADD_C_WARNING_FLAG("Wdocumentation")
# -Wdocumentation enables -Wdocumentation-deprecated-sync
# which currently raises to many warnings
MY_ADD_C_WARNING_FLAG("Wno-documentation-deprecated-sync")
ENDIF()
# Disable a few default Clang++ warnings
STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wno-null-conversion")
STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wno-unused-private-field")
STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wconditional-uninitialized")
STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wdeprecated")
# Xcode >= 14 makes noise about sprintf, and loss of precision when
# assigning integers from 64 bits to 32 bits, so silence. We can't
# put these two deprecation exceptions in Darwin.cmake because the
# previous line adding -Wdeprecated would be added later and
# override them, so do it here instead:
IF(APPLE)
STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wno-deprecated-declarations")
STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wno-shorten-64-to-32")
ENDIF()
STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wextra-semi")
STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wheader-hygiene")
STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wnon-virtual-dtor")
STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wundefined-reinterpret-cast")
STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wrange-loop-analysis")
MY_ADD_CXX_WARNING_FLAG("Winconsistent-missing-destructor-override")
MY_ADD_CXX_WARNING_FLAG("Winconsistent-missing-override")
MY_ADD_CXX_WARNING_FLAG("Wshadow-field")
MY_ADD_CXX_WARNING_FLAG("Wstring-concatenation")
# require clang-11 or later when enabling -Wdocumentation to workaround
#
# https://bugs.llvm.org/show_bug.cgi?id=38905
MY_ADD_CXX_WARNING_FLAG("Wdocumentation")
# -Wdocumentation enables -Wdocumentation-deprecated-sync
# which currently raises to many warnings
MY_ADD_CXX_WARNING_FLAG("Wno-documentation-deprecated-sync")
# Other possible options that give warnings (Clang 6.0):
# -Wabstract-vbase-init
# -Wc++2a-compat
# -Wc++98-compat-pedantic
# -Wcast-align
# -Wclass-varargs
# -Wcomma
# -Wconversion
# -Wcovered-switch-default
# -Wdeprecated-dynamic-exception-spec
# -Wdisabled-macro-expansion
# -Wdocumentation-pedantic
# -Wdocumentation-unknown-command
# -Wdouble-promotion
# -Wexit-time-destructors
# -Wfloat-equal
# -Wformat-nonliteral
# -Wformat-pedantic
# -Wglobal-constructors
# -Wgnu-anonymous-struct
# -Wgnu-zero-variadic-macro-arguments
# -Wimplicit-fallthrough
# -Wkeyword-macro
# -Wmissing-noreturn
# -Wmissing-prototypes
# -Wmissing-variable-declarations
# -Wnested-anon-types
# -Wnewline-eof
# -Wold-style-cast
# -Wpadded
# -Wpedantic
# -Wredundant-parens
# -Wreserved-id-macro
# -Wshadow
# -Wshift-sign-overflow
# -Wsign-conversion
# -Wswitch-enum
# -Wtautological-type-limit-compare
# -Wtautological-unsigned-enum-zero-compare
# -Wundefined-func-template
# -Wunreachable-code
# -Wunreachable-code-break
# -Wunreachable-code-return
# -Wunused-exception-parameter
# -Wunused-macros
# -Wunused-member-function
# -Wunused-template
# -Wused-but-marked-unused
# -Wweak-template-vtables
# -Wweak-vtables
# -Wzero-as-null-pointer-constant
ENDIF()
# Turn on Werror (warning => error) when using maintainer mode.
IF(MYSQL_MAINTAINER_MODE)
IF(MSVC)
STRING_APPEND(CMAKE_C_FLAGS " /WX")
STRING_APPEND(CMAKE_CXX_FLAGS " /WX")
STRING_APPEND(CMAKE_EXE_LINKER_FLAGS " /WX")
STRING_APPEND(CMAKE_MODULE_LINKER_FLAGS " /WX")
STRING_APPEND(CMAKE_SHARED_LINKER_FLAGS " /WX")
ENDIF()
IF(MY_COMPILER_IS_GNU_OR_CLANG)
STRING_APPEND(MY_C_WARNING_FLAGS " -Werror")
STRING_APPEND(MY_CXX_WARNING_FLAGS " -Werror")
ENDIF()
ENDIF()
# Set warning flags for gcc/g++/clang/clang++
IF(MY_COMPILER_IS_GNU_OR_CLANG)
STRING_APPEND(CMAKE_C_FLAGS " ${MY_C_WARNING_FLAGS}")
STRING_APPEND(CMAKE_CXX_FLAGS " ${MY_CXX_WARNING_FLAGS}")
ENDIF()
MACRO(ADD_WSHADOW_WARNING)
IF(MY_COMPILER_IS_GNU)
ADD_COMPILE_OPTIONS("-Wshadow=local")
ELSEIF(MY_COMPILER_IS_CLANG)
# added in clang-5.0
ADD_COMPILE_OPTIONS("-Wshadow-uncaptured-local")
ENDIF()
ENDMACRO()