This option specifies that a console application is to be generated, by instructing the linker to set the PE header subsystem type required for console applications. This option is available for Cygwin and MinGW targets and is enabled by default on those targets.

Preprocess, compile or link with specified C RunTime DLL library. This option adjust predefined macros __CRTDLL__, __MSVCRT__, _UCRT and __MSVCRT_VERSION__ for specified CRT library, choose start file for CRT library and link with CRT library. Recognized CRT library names for proprocessor are: crtdll*, msvcrt10*, msvcrt20*, msvcrt40*, msvcr40*, msvcrtd*, msvcrt-os*, msvcr70*, msvcr71*, msvcr80*, msvcr90*, msvcr100*, msvcr110*, msvcr120* and ucrt*. If this options is not specified then the default MinGW import library msvcrt is used for linking and no other adjustment for preprocessor is done. MinGW import library msvcrt is just a symlink to (or a copy of) another MinGW CRT import library chosen during MinGW compilation. MinGW import library msvcrt-os is for Windows system CRT DLL library msvcrt.dll and in most cases is the default MinGW import library. Generally speaking, changing the CRT DLL requires recompiling the entire MinGW CRT. This option is for experimental and testing purposes only. This option is available for MinGW targets.

This option is available for Cygwin and MinGW targets. It specifies that a DLLa dynamic link libraryis to be generated, enabling the selection of the required runtime startup object and entry point.

This option is available for Cygwin and MinGW targets. It specifies that the dllimport attribute should be ignored.

This option is available for MinGW targets. It specifies that MinGW-specific thread support is to be used.

This option is available for MinGW-w64 targets. It causes the UNICODE preprocessor macro to be predefined, and chooses Unicode-capable runtime startup code.

This option is available for Cygwin and MinGW targets. It specifies that the typical Microsoft Windows predefined macros are to be set in the pre-processor, but does not influence the choice of runtime library/startup code.

This option is available for Cygwin and MinGW targets. It specifies that a GUI application is to be generated by instructing the linker to set the PE header subsystem type appropriately.

This option is available for MinGW targets. It specifies that the executable flag for the stack used by nested functions isnt set. This is necessary for binaries running in kernel mode of Microsoft Windows, as there the User32 API, which is used to set executable privileges, isnt available.

This option is available for MinGW and Cygwin targets. It specifies that relocated-data in read-only section is put into the .data section. This is a necessary for older runtimes not supporting modification of .rdata sections for pseudo-relocation.