1 # This file contains compile flags and general build configuration for Quassel
3 # (C) 2014 by the Quassel Project <devel@quassel-irc.org>
5 # Redistribution and use is allowed according to the terms of the BSD license.
6 # For details see the accompanying COPYING-CMAKE-SCRIPTS file.
8 include(CheckCXXCompilerFlag)
10 # Enable various flags on gcc
11 if (CMAKE_COMPILER_IS_GNUCXX)
12 if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.8")
13 message(FATAL_ERROR "Your compiler is too old; you need GCC 4.8+, Clang 3.3+, MSVC 19.0+, or any other compiler with full C++11 support.")
16 # Let's just hope that all gccs support these options and skip the tests...
17 # -fno-strict-aliasing is needed apparently for Qt < 4.6
18 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -Wextra -Wnon-virtual-dtor -fno-strict-aliasing -Wundef -Wcast-align -Wpointer-arith -Wformat-security -fno-check-new -fno-common")
19 # set(CMAKE_CXX_FLAGS_RELEASE "-O2") # use CMake default
20 # set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-g -O2") # use CMake default
21 set(CMAKE_CXX_FLAGS_DEBUG "-g -ggdb -O2 -fno-reorder-blocks -fno-schedule-insns -fno-inline")
23 check_cxx_compiler_flag(-Woverloaded-virtual CXX_W_OVERLOADED_VIRTUAL)
24 if(CXX_W_OVERLOADED_VIRTUAL)
25 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Woverloaded-virtual")
29 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wno-unused-function -Wno-undef -fno-strict-aliasing")
32 elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
33 if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "3.3")
34 message(FATAL_ERROR "Your compiler is too old; you need Clang 3.3+, GCC 4.8+, MSVC 19.0+, or any other compiler with full C++11 support.")
37 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wnon-virtual-dtor -Wno-long-long -Wundef -Wcast-align -Wchar-subscripts -Wall -W -Wextra -Wpointer-arith -Wformat-security -Woverloaded-virtual -fno-common -Wno-deprecated-register")
38 # set(CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG -DQT_NO_DEBUG") # Use CMake default
39 # set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O2 -g -DNDEBUG -DQT_NO_DEBUG") # Use CMake default
40 set(CMAKE_CXX_FLAGS_DEBUG "-g -O2 -fno-inline")
42 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wno-unused-function -Wno-undef -fno-strict-aliasing")
44 # For MSVC, at least do a version sanity check...
45 elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
46 if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "19.0")
47 message(FATAL_ERROR "Your compiler is too old; you need at least Visual Studio 2015 (MSVC 19.0+), GCC 4.8+, Clang 3.3+, or any other compiler with full C++11 support.")
50 # ... and enable exception handling (required for STL types)
51 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHsc")
53 # Unknown/unsupported compiler
55 message(WARNING "Unknown or unsupported compiler. Make sure to enable C++11 support. Good luck.")
60 set(CMAKE_OSX_ARCHITECTURES "x86_64")
61 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mmacosx-version-min=10.9 -stdlib=libc++")