none-eabi-gcc -v --help 2>/dev/null | grep -E "^\s+\-std=.*$"
-std=<standard> Assume that the input sources are for <standard>.
-std=f2003 Conform to the ISO Fortran 2003 standard.
-std=f2008 Conform to the ISO Fortran 2008 standard.
-std=f2008ts Conform to the ISO Fortran 2008 standard
-std=f95 Conform to the ISO Fortran 95 standard.
-std=gnu Conform to nothing in particular.
-std=legacy Accept extensions to support legacy code.
-std=c++03 Conform to the ISO 1998 C++ standard revised by
-std=c++98.
-std=c++0x Deprecated in favor of -std=c++11. Same as
-std=c++11.
-std=c++11 Conform to the ISO 2011 C++ standard.
-std=c++14 Conform to the ISO 2014 C++ standard.
-std=c++17 Same as -std=c++1z. Use the latter option
-std=c++1y Deprecated in favor of -std=c++14. Same as
-std=c++14.
-std=c++1z Conform to the ISO 2017(?) C++ draft standard
-std=c++98 Conform to the ISO 1998 C++ standard revised by
-std=c11 Conform to the ISO 2011 C standard.
-std=c1x Deprecated in favor of -std=c11. Same as
-std=c11.
-std=c89 Conform to the ISO 1990 C standard. Same as
-std=c90.
-std=c90 Conform to the ISO 1990 C standard.
-std=c99 Conform to the ISO 1999 C standard.
-std=c9x Deprecated in favor of -std=c99. Same as
-std=c99.
-std=gnu++03 Conform to the ISO 1998 C++ standard revised by
-std=gnu++0x Deprecated in favor of -std=gnu++11. Same as
-std=gnu++11.
-std=gnu++11 Conform to the ISO 2011 C++ standard with GNU
-std=gnu++14 Conform to the ISO 2014 C++ standard with GNU
-std=gnu++17 Same as -std=gnu++1z. Use the latter option
-std=gnu++1y Deprecated in favor of -std=gnu++14. Same as
-std=gnu++14.
-std=gnu++1z Conform to the ISO 201z(7?) C++ draft standard
-std=gnu++98 Conform to the ISO 1998 C++ standard revised by
-std=gnu11 Conform to the ISO 2011 C standard with GNU
-std=gnu1x Deprecated in favor of -std=gnu11. Same as
-std=gnu11.
-std=gnu89 Conform to the ISO 1990 C standard with GNU
-std=gnu90 Conform to the ISO 1990 C standard with GNU
-std=gnu99 Conform to the ISO 1999 C standard with GNU
-std=gnu9x Deprecated in favor of -std=gnu99. Same as
-std=gnu99.
-std=iso9899:1990 Conform to the ISO 1990 C standard. Same as
-std=c90.
-std=iso9899:199409 Conform to the ISO 1990 C standard as amended in
-std=iso9899:1999 Conform to the ISO 1999 C standard. Same as
-std=c99.
-std=iso9899:199x Deprecated in favor of -std=iso9899:1999. Same
-std=iso9899:2011 Conform to the ISO 2011 C standard. Same as
-std=c11.