| Flag | Description |
|---|---|
| ada | Build the ADA language (GNAT) frontend |
| altivec | Add support for optimizations for G4 and G5/ppc970 processors |
| awt | Useful only when building GCJ, this enables Abstract Window Toolkit (AWT) peer support on top of GTK+ |
| cilk | Support the Cilk Plus language (C/C++ based languages for parallel programming) |
| d | Enable support for the D programming language |
| fixed-point | Enable fixed-point arithmetic support for MIPS targets in gcc (Warning: significantly increases compile time!) |
| gcj | Build the GCJ Java language frontend. |
| go | Build the GCC Go language frontend. |
| graphite | Add support for the framework for loop optimizations based on a polyhedral intermediate representation |
| jit | Enable libgccjit so other applications can embed gcc for Just-In-Time compilation. This will slow down the compiler a bit as it forces all of the toolchain to be shared libs. |
| libssp | Build SSP support into a dedicated library rather than use the code in the C library (DO NOT ENABLE THIS IF YOU DON'T KNOW WHAT IT DOES) |
| mpx | Enable support for Intel Memory Protection Extensions (MPX) |
| mudflap | Add support for mudflap, a pointer use checking library |
| nopie | Disable PIE support (NOT FOR GENERAL USE) |
| nossp | Disable SSP support (NOT FOR GENERAL USE) |
| nptl | Enable support for Native POSIX Threads Library, the new threading module (requires linux-2.6 or better usually) |
| objc | Build support for the Objective C code language |
| objc++ | Build support for the Objective C++ language |
| objc-gc | Build support for the Objective C code language Garbage Collector |
| pgo | Build GCC using Profile Guided Optimization (PGO) |
| regression-test | Run the testsuite and install the results (requires FEATURES=test) |
| sanitize | Build support for various sanitizer functions (ASAN/TSAN/etc...) |
| ssp | Build packages with stack smashing protector on by default |
| vtv | Build support for virtual table verification (a C++ hardening feature) |