All USE Flags
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ada - 1 package(s)
Build the ADA language (GNAT) frontend
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altivec - 1 package(s)
Add support for optimizations for G4 and G5/ppc970 processors
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awt - 1 package(s)
Useful only when building GCJ, this enables Abstract Window Toolkit
(AWT) peer support on top of GTK+
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cilk - 1 package(s)
Support the Cilk Plus language (C/C++ based languages for parallel programming)
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d - 1 package(s)
Enable support for the D programming language
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fixed-point - 1 package(s)
Enable fixed-point arithmetic support for MIPS targets
in gcc (Warning: significantly increases compile time!)
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gcj - 1 package(s)
Build the GCJ Java language frontend.
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go - 1 package(s)
Build the GCC Go language frontend.
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graphite - 1 package(s)
Add support for the framework for loop
optimizations based on a polyhedral intermediate representation
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jit - 1 package(s)
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.
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libssp - 1 package(s)
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)
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mpx - 1 package(s)
Enable support for Intel Memory Protection Extensions (MPX)
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mudflap - 1 package(s)
Add support for mudflap, a pointer use checking library
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nopie - 1 package(s)
Disable PIE support (NOT FOR GENERAL USE)
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nossp - 1 package(s)
Disable SSP support (NOT FOR GENERAL USE)
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nptl - 1 package(s)
Enable support for Native POSIX Threads Library, the new threading module (requires linux-2.6 or better usually)
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objc - 1 package(s)
Build support for the Objective C code language
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objc++ - 1 package(s)
Build support for the Objective C++ language
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objc-gc - 1 package(s)
Build support for the Objective C code language Garbage
Collector
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pgo - 1 package(s)
Build GCC using Profile Guided Optimization (PGO)
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regression-test - 1 package(s)
Run the testsuite and install the results (requires FEATURES=test)
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sanitize - 1 package(s)
Build support for various sanitizer functions (ASAN/TSAN/etc...)
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ssp - 1 package(s)
Build packages with stack smashing protector on by default
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vtv - 1 package(s)
Build support for virtual table verification (a C++ hardening feature)