# Enable various flags on gcc
if (CMAKE_COMPILER_IS_GNUCXX)
- if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.7")
- message(WARNING "Your compiler is too old; we expect at least GCC 4.7. Your build will likely fail.")
+ if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.8")
+ 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.")
endif()
# Let's just hope that all gccs support these options and skip the tests...
# ... and for Clang
elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
- if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "3.1")
- message(WARNING "Your compiler is too old; we expect at least Clang 3.1. Your build will likely fail.")
+ if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "3.3")
+ message(FATAL_ERROR "Your compiler is too old; you need Clang 3.3+, GCC 4.8+, MSVC 19.0+, or any other compiler with full C++11 support.")
endif()
set(CMAKE_CXX_FLAGS "${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")
# For MSVC, at least do a version sanity check
elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "MSVC")
- if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "18.0")
- message(WARNING "Your compiler is too old; we expect at least Visual Studio Nov 2013 CTP (MSVC 18). Your build will likely fail.")
+ if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "19.0")
+ 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.")
endif()
# Unknown/unsupported compiler