gcc

Description:	The GNU Compiler Collection
License:	GPL-3, LGPL-3, GPL-3, libgcc, libstdc++, gcc-runtime-library-exception-3.1, FDL-1.2
Homepage:	https://gcc.gnu.org/
Location:	Portage

Legend:

+ - stable
~ - unstable
M - hardmask

		alpha	amd64	arm	hppa	ia64	m68k	mips	ppc	ppc64	s390	sh	sparc	x86
9.1.0	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
8.3.0-r1	diff	+	+	~	~	~	~	~	~	~	~	~	+	+
8.3.0	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
8.2.0-r6	diff	+	+	+	+	+	+	~	+	+	+	+	+	+
8.2.0-r5	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
7.4.0-r1	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
7.4.0	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
7.3.0-r6	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
7.3.0-r3	diff	+	+	+	+	+	+	~	+	+	+	+	+	+
6.5.0	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
6.4.0-r5	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
6.4.0-r1	diff	+	+	+	+	+	~	~	+	+	~	~	+	+
5.5.0	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
5.4.0-r6	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
5.4.0-r4	diff	+	+	+	+	+	+	~	+	+	+	+	+	+
4.9.4	diff	+	+	+	+	+	+	~	+	+	+	+	+	+
4.8.5-r2	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
4.8.5-r1	diff	+	+	+	+	+	+	~	+	+	+	+	+	+
4.7.4-r2	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
4.7.4-r1	diff	+	+	+	+	+	+	~	+	+	+	+	+	+
4.6.4-r1	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
4.6.4	diff	+	+	+	+	+	~	~	+	+	~	~	+	+
4.5.4-r1	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
4.5.4	diff	+	+	+	+	+	~	~	+	+	~	~	+	+
4.4.7-r1	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
4.4.7	diff	+	+	+	+	+	~	~	+	+	~	~	+	+
4.3.6-r2	diff	~	~	~	-	~	~	~	~	~	~	~	~	~
4.3.6-r1	diff	+	+	+	-	+	~	~	+	+	~	~	+	+
4.2.4-r2	diff	~	~	~	~	~	~	-	~	~	-	-	~	~
4.2.4-r1	diff	~	~	~	+	~	~	-	~	~	-	-	~	~
4.1.2-r1	diff	~	~	~	~	~	~	~	~	~	~	~	~	~
4.1.2	diff	+	+	+	+	+	~	~	+	+	~	~	+	+
4.0.4-r1	diff	-	-	-	-	-	-	-	-	-	-	-	-	-
4.0.4	diff	-	-	-	-	-	-	-	-	-	-	-	-	-
3.4.6-r2	diff	+	+	+	-	~	-	~	+	+	~	~	+	+
3.3.6-r2	diff	-	~	-	-	-	-	-	-	-	-	-	-	~
3.3.6-r1		-	~	-	-	-	-	-	-	-	-	-	-	~

USE flags

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+
bootstrap - !!internal use only!! DO NOT SET THIS FLAG YOURSELF!, used during original system bootstrapping [make stage2]
boundschecking - Add the bounds checking patch by Haj Ten Brugge, this will DISABLE the hardened PIE+SSP patches
build - !!internal use only!! DO NOT SET THIS FLAG YOURSELF!, used for creating build images and the first half of bootstrapping [make stage1]
cilk - Support the Cilk Plus language (C/C++ based languages for parallel programming)
cxx - Build support for C++ (bindings, extra libraries, code generation, ...)
d - Enable support for the D programming language
debug - Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
doc - Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally
elibc_FreeBSD - ELIBC setting for systems that use the FreeBSD C library
examples - Install examples, usually source code
fixed-point - Enable fixed-point arithmetic support for MIPS targets in gcc (Warning: significantly increases compile time!)
fortran - Add support for fortran
gcj - Enable building with gcj (The GNU Compiler for the Javatm Programming Language)
go - Build the GCC Go language frontend.
graphite - Add support for the framework for loop optimizations based on a polyhedral intermediate representation
hardened - Activate default security enhancements for toolchain (gcc, glibc, binutils)
java - Add support for Java
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)
lto - Build using Link Time Optimizations (LTO)
mpx - Enable support for Intel Memory Protection Extensions (MPX)
mudflap - Add support for mudflap, a pointer use checking library
multilib - On 64bit systems, if you want to be able to compile 32bit and 64bit binaries
nls - Add Native Language Support (using gettext - GNU locale utilities)
nocxx - Old flag -- USE=cxx from now on
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
openmp - Build support for the OpenMP (support parallel computing), requires >=sys-devel/gcc-4.2 built with USE="openmp"
pch - Enable precompiled header support for faster compilation at the expense of disk space and memory (>=sys-devel/gcc-3.4 only)
pgo - Build GCC using Profile Guided Optimization (PGO)
pie - Build programs as Position Independent Executables (a security hardening technique)
regression-test - Run the testsuite and install the results (requires FEATURES=test)
sanitize - Build support for various sanitizer functions (ASAN/TSAN/etc...)
source - Zip the sources and install them
ssp - Build packages with stack smashing protector on by default
static - !!do not set this during bootstrap!! Causes binaries to be statically linked instead of dynamically
systemtap - enable systemtap static probe points
test - Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently)
vanilla - Do not add extra patches which change default behaviour; DO NOT USE THIS ON A GLOBAL SCALE as the severity of the meaning changes drastically
vtv - Build support for virtual table verification (a C++ hardening feature)

Also available in: Atom