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# Copyright 2018 Google
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# C++ Compiler setup
# We use C++11
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
set(CLANG ON)
endif()
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set(GNU ON)
endif()
if(CLANG OR GNU)
set(
common_flags
-Wall -Wextra -Werror
# Be super pedantic about format strings
-Wformat
# Avoid use of uninitialized values
-Wuninitialized
-fno-common
# Delete unused things
-Wunused-function -Wunused-value -Wunused-variable
)
set(
cxx_flags
# Cut down on symbol clutter
# TODO(wilhuff) try -fvisibility=hidden
-fvisibility-inlines-hidden
)
set(
c_flags
-Wstrict-prototypes
)
if(CLANG)
list(
APPEND common_flags
-Wconditional-uninitialized -Werror=return-type -Winfinite-recursion -Wmove
-Wrange-loop-analysis -Wunreachable-code
# Options added to match apple recommended project settings
-Wcomma
)
endif()
foreach(flag ${common_flags} ${c_flags})
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${flag}")
endforeach()
foreach(flag ${common_flags} ${cxx_flags})
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}")
endforeach()
endif()
if(APPLE)
# CMake has no special support for Objective-C as a distinct language but
# enabling modules and other clang extensions would apply even to regular C++
# sources which is nonportable. Keep these flags separate to avoid misuse.
set(
OBJC_FLAGS
-Werror=deprecated-objc-isa-usage
-Werror=non-modular-include-in-framework-module
-Werror=objc-root-class
-Wblock-capture-autoreleasing
-Wimplicit-atomic-properties
-Wnon-modular-include-in-framework-module
-fobjc-arc
-fmodules
-fno-autolink
-F${FIREBASE_INSTALL_DIR}/Frameworks
)
endif(APPLE)
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