std, Qstd

c89

Conforms to the ISO/IEC 9899:1990 International Standard.

c99

Conforms to The ISO/IEC 9899:1999 International Standard.

c9x

This value is equivalent to specifying value c99.

gnu89

Conforms to ISO C90 plus GNU* extensions.

gnu99

Conforms to ISO C99 plus GNU* extensions.

gnu++98

Conforms to the 1998 ISO C++ standard plus GNU extensions.

c++0x

Enables support for the following C++0x features:

• Atomic types and operations

• Scoped enumeration types

• Defaulted and deleted functions

• Rvalue references

• Empty macro arguments

• Variadic macros

• Type long long

• Trailing comma in enum definition

• Concatenation of mixed-width string literals

• Extended friend declarations

• Use of ">>" to close two template argument lists

• Relaxed rules for use of "typename"

• Relaxed rules for disambiguation using the "template" keyword

• "extern template" to suppress instantiation of an entity

• "auto" type specifier

• decltype operator

• static_assert

• compliant __func__

• lambda expressions

• character types char16_t and char32_t to store UTF-16 and UTF-32 encoding values, respectively

• template aliases

• variadic templates

• nullptr

• late-specified return types as defined in gcc proposal N2541

• default template arguments for function templates

• standard attributes as defined in gcc proposal N2761

• new style SFINAE as defined in gcc proposal N2634

gnu++0x

This value is equivalent to specifying value c++0x.