GCC 编译标准-std=的设置方法

` c90' ` c89' ` iso9899:1990'

Support all ISO C90 programs (certain GNU extensions that conflict with ISO C90 are disabled). Same as -ansi for C code.

` iso9899:199409'

ISO C90 as modified in amendment 1.

` c99' ` c9x' ` iso9899:1999' ` iso9899:199x'

ISO C99. Note that this standard is not yet fully supported; see / for more information. The names ` c9x' and ` iso9899:199x' are deprecated.

` c1x'

ISO C1X, the draft of the next revision of the ISO C standard. Support is limited and experimental and features enabled by this option may be changed or removed if changed in or removed from the standard draft.

` gnu90' ` gnu89'

GNU dialect of ISO C90 (including some C99 features). This is the default for C code.

` gnu99' ` gnu9x'

GNU dialect of ISO C99. When ISO C99 is fully implemented in GCC, this will become the default. The name ` gnu9x' is deprecated.

` gnu1x'

GNU dialect of ISO C1X. Support is limited and experimental and features enabled by this option may be changed or removed if changed in or removed from the standard draft.

` c++98'

The 1998 ISO C++ standard plus amendments. Same as -ansi for C++ code.

` gnu++98'

GNU dialect of -std=c++98. This is the default for C++ code.

` c++0x'

The working draft of the upcoming ISO C++0x standard. This option enables experimental features that are likely to be included in C++0x. The working draft is constantly changing, and any feature that is enabled by this flag may be removed from future versions of GCC if it is not part of the C++0x standard.

` gnu++0x'

GNU dialect of -std=c++0x. This option enables experimental features that may be removed in future versions of GCC.