Predefined Macros for Interoperability

The Intel® C++ Compiler and gcc* support the following predefined macros:

• __GNUC__
• __GNUC_MINOR__
• __GNUC_PATCHLEVEL__

You can specify the -no-gcc option to undefine these macros. If you need gcc interoperability (-cxxlib-gcc),  do not use the -no-gcc compiler option.

Warning

Not defining these macros results in different paths through system header files. These alternate paths may be poorly tested or otherwise incompatible.

See also Predefined Macros and GNU Environment Variables.