kicad/CMakeModules/Warnings.cmake

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#
# This program source code file is part of KICAD, a free EDA CAD application.
#
# Copyright (C) 2007-2020 Kicad Developers, see AUTHORS.txt for contributors.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# 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 for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, you may find one here:
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# or you may search the http://www.gnu.org website for the version 2 license,
# or you may write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#
# Only configure warnings for Clang and GCC
if( CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang" )
include( CheckCXXCompilerFlag )
# Warn about missing override specifiers
CHECK_CXX_COMPILER_FLAG( "-Wsuggest-override" COMPILER_SUPPORTS_WSUGGEST_OVERRIDE )
if( COMPILER_SUPPORTS_WSUGGEST_OVERRIDE )
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wsuggest-override" )
message( STATUS "Enabling warning -Wsuggest-override" )
endif()
# This is Clang's version of -Wsuggest-override
CHECK_CXX_COMPILER_FLAG( "-Winconsistent-missing-override" COMPILER_SUPPORTS_WINCONSISTENT_MISSING_OVERRIDE )
if( COMPILER_SUPPORTS_WINCONSISTENT_MISSING_OVERRIDE )
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Winconsistent-missing-override" )
message( STATUS "Enabling warning -Winconsistent-missing-override" )
endif()
CHECK_CXX_COMPILER_FLAG( "-Wvla" COMPILER_SUPPORTS_WVLA )
if( COMPILER_SUPPORTS_WVLA )
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror=vla" )
message( STATUS "Enabling error for -Wvla" )
endif()
# Warn on implicit switch fallthrough
CHECK_CXX_COMPILER_FLAG( "-Wimplicit-fallthrough" COMPILER_SUPPORTS_WIMPLICIT_FALLTHROUGH )
if( COMPILER_SUPPORTS_WIMPLICIT_FALLTHROUGH )
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wimplicit-fallthrough" )
message( STATUS "Enabling warning -Wimplicit-fallthrough" )
endif()
# Error if there is a problem with function returns
CHECK_CXX_COMPILER_FLAG( "-Wreturn-type" COMPILER_SUPPORTS_WRETURN_TYPE )
if( COMPILER_SUPPORTS_WRETURN_TYPE )
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror=return-type" )
message( STATUS "Enabling error for -Wreturn-type" )
endif()
# Warn about shadowed variables (-Wshadow option), if supported
# Unfortunately, the swig autogenerated files have a lot of shadowed variables
# and -Wno-shadow does not exist.
# Adding -Wshadow can be made only for .cpp files
# and will be added later in CMakeLists.txt
CHECK_CXX_COMPILER_FLAG( "-Wshadow" COMPILER_SUPPORTS_WSHADOW )
if( COMPILER_SUPPORTS_WSHADOW )
set( WSHADOW_FLAGS "-Wshadow" )
message( STATUS "Enabling warning -Wshadow" )
endif()
endif()