Autotools check for C++11

c++ c++11 autotools autoconf
KAction picture KAction · Aug 10, 2012 · Viewed 9.2k times · Source

I use AX_CXX_COMPILE_STDCXX_0X(can look on autoconf-archive) to check for c++11 capabilities of the compiler. It correctly determines that -std=c++0x required, but does not add it to CXXFLAGS. I took a look at the macro source and it actually checks but then restores previous flags.

What should I do to get CXXFLAGS set to be able to compile c++11 source?

Just adding -std=c++0x to AM_CXXFLAGS is not nice solution, because I'd like to put the burden of making the compiler compile in C++11 mode on the autoconf developers, not me.

Answer

user743382 picture user743382 · Aug 11, 2012

What you're looking for has already been made as AX_CXX_COMPILE_STDCXX_11, part of autoconf-archive. It will add the required option to the environment (formerly through CXXFLAGS, now through CXX) and error out if no C++11 support is available.

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