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AC_DEFUN([AC_CXX_CHECK_STANDARD],[
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AC_CACHE_CHECK([what C++ standard the compiler supports],
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save_CXXFLAGS="${CXXFLAGS}"
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CXXFLAGS="-std=gnu++0x ${CXXFLAGS}"
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dnl Copyright (C) 2009 Sun Microsystems
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dnl This file is free software; Sun Microsystems
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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string foo("test string");
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[ac_cv_cxx_standard="gnu++0x"],
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[ac_cv_cxx_standard="gnu++98"])
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CXXFLAGS="${save_CXXFLAGS}"
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CXXFLAGS="-std=${ac_cv_cxx_standard} ${CXXFLAGS}"
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AC_DEFUN([PANDORA_CHECK_CXX_STANDARD],[
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AC_REQUIRE([AC_CXX_COMPILE_STDCXX_0X])
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AS_IF([test "$GCC" = "yes"],
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[AS_IF([test "$ac_cv_cxx_compile_cxx0x_native" = "yes"],[],
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[AS_IF([test "$ac_cv_cxx_compile_cxx0x_gxx" = "yes"],
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[CXXFLAGS="-std=gnu++0x ${CXXFLAGS}"],
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[CXXFLAGS="-std=gnu++98"])
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AC_CXX_HEADER_STDCXX_98