Try setting CMAKE_CXX_EXTENSIONS this to OFF. http://www.cmake.org/cmake/help/v3.2/prop_tgt/CXX_EXTENSIONS.html#prop_tgt:CXX_EXTENSIONS
From: CMake [mailto:cmake-boun...@cmake.org] On Behalf Of Scott Aron Bloom Sent: Saturday, July 04, 2015 1:17 AM To: digitalriptide; cmake@cmake.org Subject: Re: [CMake] Setting CXX_STANDARD 11 Enables GNU Extensions This is why I don’t use the CXX_STANDARD and instead use the CXX_FLAGS and add the flag I need. From: CMake [mailto:cmake-boun...@cmake.org] On Behalf Of digitalriptide Sent: Friday, July 3, 2015 1:56 PM To: cmake@cmake.org<mailto:cmake@cmake.org> Subject: [CMake] Setting CXX_STANDARD 11 Enables GNU Extensions If I enable C++11 for some target via set_target_properties( SomeTarget PROPERTIES CXX_STANDARD 11 ) set_target_properties( SomeTarget PROPERTIES CXX_STANDARD_REQUIRED ON ) with GCC, the code will then compile with -std=gnu++11. Compiling with -std=gnu++11 enables C++11 *and* the GNU extensions. Is there an option that will result in -std=c++11 in lieu of -std=gnu++11, to build without the the GNU extensions? Thank you!
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