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168 lines
5.4 KiB
168 lines
5.4 KiB
5 months ago
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# Copyright (c) 2010, 2019, Oracle and/or its affiliates. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License, version 2.0,
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# as published by the Free Software Foundation.
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#
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# This program is also distributed with certain software (including
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# but not limited to OpenSSL) that is licensed under separate terms,
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# as designated in a particular file or component or in included license
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# documentation. The authors of MySQL hereby grant you an additional
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# permission to link the program and your derivative works with the
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# separately licensed software that they have included with MySQL.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License, version 2.0, for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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MACRO(MY_ADD_C_WARNING_FLAG WARNING_FLAG)
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MY_CHECK_C_COMPILER_FLAG("-${WARNING_FLAG}" HAVE_${WARNING_FLAG})
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IF(HAVE_${WARNING_FLAG})
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STRING_APPEND(MY_C_WARNING_FLAGS " -${WARNING_FLAG}")
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ENDIF()
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ENDMACRO()
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MACRO(MY_ADD_CXX_WARNING_FLAG WARNING_FLAG)
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MY_CHECK_CXX_COMPILER_WARNING("-${WARNING_FLAG}" HAS_FLAG)
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IF(HAS_FLAG)
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STRING_APPEND(MY_CXX_WARNING_FLAGS " -${WARNING_FLAG}")
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ENDIF()
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ENDMACRO()
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#
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# Common flags for all versions/compilers
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#
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# Common warning flags for GCC, G++, Clang and Clang++
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SET(MY_WARNING_FLAGS
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"-Wall -Wextra -Wformat-security -Wvla -Wundef")
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# Gives spurious warnings on 32-bit; see GCC bug 81890.
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IF(SIZEOF_VOIDP EQUAL 8)
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STRING_APPEND(MY_WARNING_FLAGS " -Wmissing-format-attribute")
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ENDIF()
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# Clang 6.0 and newer on Windows treat -Wall as -Weverything; use /W4 instead
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IF(WIN32_CLANG)
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STRING(REPLACE "-Wall -Wextra" "/W4" MY_WARNING_FLAGS "${MY_WARNING_FLAGS}")
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ENDIF()
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# Common warning flags for GCC and Clang
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SET(MY_C_WARNING_FLAGS "${MY_WARNING_FLAGS} -Wwrite-strings")
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# Common warning flags for G++ and Clang++
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SET(MY_CXX_WARNING_FLAGS "${MY_WARNING_FLAGS} -Woverloaded-virtual -Wcast-qual")
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IF(MY_COMPILER_IS_GNU)
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# The default =3 given by -Wextra is a bit too strict for our code.
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MY_ADD_CXX_WARNING_FLAG("Wimplicit-fallthrough=2")
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MY_ADD_C_WARNING_FLAG("Wjump-misses-init")
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ENDIF()
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#
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# Extra flags not supported on all versions/compilers
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#
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# Only for C++ as C code has some macro usage that is difficult to avoid
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IF(MY_COMPILER_IS_GNU)
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MY_ADD_CXX_WARNING_FLAG("Wlogical-op")
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ENDIF()
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# Extra warning flags for Clang
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IF(MY_COMPILER_IS_CLANG)
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STRING_APPEND(MY_C_WARNING_FLAGS " -Wconditional-uninitialized")
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STRING_APPEND(MY_C_WARNING_FLAGS " -Wextra-semi")
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STRING_APPEND(MY_C_WARNING_FLAGS " -Wmissing-noreturn")
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MY_ADD_C_WARNING_FLAG("Wunreachable-code-break")
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MY_ADD_C_WARNING_FLAG("Wunreachable-code-return")
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ENDIF()
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# Extra warning flags for Clang++
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IF(MY_COMPILER_IS_CLANG)
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# Disable a few default Clang++ warnings
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STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wno-null-conversion")
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STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wno-unused-private-field")
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STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wconditional-uninitialized")
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STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wdeprecated")
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STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wextra-semi")
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STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wheader-hygiene")
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STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wnon-virtual-dtor")
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STRING_APPEND(MY_CXX_WARNING_FLAGS " -Wundefined-reinterpret-cast")
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MY_ADD_CXX_WARNING_FLAG("Winconsistent-missing-destructor-override")
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MY_ADD_CXX_WARNING_FLAG("Wshadow-field")
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# Other possible options that give warnings (Clang 6.0):
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# -Wabstract-vbase-init
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# -Wc++2a-compat
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# -Wc++98-compat-pedantic
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# -Wcast-align
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# -Wclass-varargs
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# -Wcomma
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# -Wconversion
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# -Wcovered-switch-default
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# -Wdeprecated-dynamic-exception-spec
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# -Wdisabled-macro-expansion
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# -Wdocumentation
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# -Wdocumentation-pedantic
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# -Wdocumentation-unknown-command
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# -Wdouble-promotion
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# -Wexit-time-destructors
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# -Wfloat-equal
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# -Wformat-nonliteral
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# -Wformat-pedantic
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# -Wglobal-constructors
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# -Wgnu-anonymous-struct
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# -Wgnu-zero-variadic-macro-arguments
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# -Wimplicit-fallthrough
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# -Wkeyword-macro
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# -Wmissing-noreturn
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# -Wmissing-prototypes
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# -Wmissing-variable-declarations
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# -Wnested-anon-types
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# -Wnewline-eof
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# -Wold-style-cast
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# -Wpadded
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# -Wpedantic
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# -Wrange-loop-analysis
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# -Wredundant-parens
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# -Wreserved-id-macro
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# -Wshadow
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# -Wshift-sign-overflow
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# -Wsign-conversion
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# -Wswitch-enum
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# -Wtautological-type-limit-compare
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# -Wtautological-unsigned-enum-zero-compare
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# -Wundefined-func-template
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# -Wunreachable-code
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# -Wunreachable-code-break
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# -Wunreachable-code-return
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# -Wunused-exception-parameter
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# -Wunused-macros
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# -Wunused-member-function
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# -Wunused-template
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# -Wused-but-marked-unused
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# -Wweak-template-vtables
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# -Wweak-vtables
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# -Wzero-as-null-pointer-constant
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ENDIF()
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# Turn on Werror (warning => error) when using maintainer mode.
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IF(MYSQL_MAINTAINER_MODE)
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STRING_APPEND(MY_C_WARNING_FLAGS " -Werror")
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STRING_APPEND(MY_CXX_WARNING_FLAGS " -Werror")
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ENDIF()
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# Set warning flags for gcc/g++/clang/clang++
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IF(MY_COMPILER_IS_GNU_OR_CLANG)
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STRING_APPEND(CMAKE_C_FLAGS " ${MY_C_WARNING_FLAGS}")
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STRING_APPEND(CMAKE_CXX_FLAGS " ${MY_CXX_WARNING_FLAGS}")
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ENDIF()
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