Revert "Drop gcc again, apparently works fine"

This reverts commit 3dfbccb57a1093e06f7d333dab4fe4b22cd4961d.

Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org>

8 files changed, 459 insertions, 0 deletions

diff --git a/sys-devel/gcc/Manifest b/sys-devel/gcc/Manifest
new file mode 100644
index 0000000..225d8e2
--- /dev/null
+++ b/sys-devel/gcc/Manifest
@@ -0,0 +1,3 @@
+DIST gcc-13-20230826.tar.xz 84285788 BLAKE2B c25be594e322dd7145245c42ae21b98aa9e3e6ae69f1fa313830e40bf2e8fcb8435762f1c9d3f1ca1dbf31653bdc76a658bec708b7850fe40a7c55504ac30618 SHA512 3d47632e90651bd50a881c727c1ef2aa3322b4fc3e082919ae430270901abf8a05a34fe93f8b678c10dc9a0758f93dc3b33ed5947c8743dab453d2b50c063722
+DIST gcc-13.2.0-musl-patches-2.tar.xz 5292 BLAKE2B c057d6574d03c05854edaa9f3fd40e9149662b04f3ac7a7db3eb078d73a7b535726d1bf52e5b12736dedb2f9898ad731f2e48a6421fcfbf7b90f929dee072fcb SHA512 a691da0c87c443a5e9d23731f4005f27871c5b12bc9102873ffa24d374aa7b9fbd187c4f5635d23fa9ffb17e351e76173c2d3fdf40646e355c4cb314b538de69
+DIST gcc-13.2.0-patches-7.tar.xz 37064 BLAKE2B 4a8700a8d44bfaa84926f8bfd0da4c5b0c0377f47fc0679456e909f7c9029b9cf1b72c0ba0bc505d9035d5c38e27f7e5b029727eaf2bc7aca417a6be966b2f43 SHA512 f440c97e6782ecb8581d41608e31a648ac426e2d870bc1d171da7794cdeff2fd0546cae0c7214e72fd3a00ead8a5c66f3f633b670b74553a2f3a40378b51f20c
diff --git a/sys-devel/gcc/files/gcc-13-fix-cross-fixincludes.patch b/sys-devel/gcc/files/gcc-13-fix-cross-fixincludes.patch
new file mode 100644
index 0000000..e4abe01
--- /dev/null
+++ b/sys-devel/gcc/files/gcc-13-fix-cross-fixincludes.patch
@@ -0,0 +1,19 @@
+Revert of https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=59e4c98173a79fcaa2c33253261409f38856c384
+for now to fix cross fixincludes builds.
+
+https://bugs.gentoo.org/905118
+--- a/gcc/Makefile.in
++++ b/gcc/Makefile.in
+@@ -532,11 +532,7 @@ LINKER_PLUGIN_API_H = $(srcdir)/../include/plugin-api.h
+ # Default native SYSTEM_HEADER_DIR, to be overridden by targets.
+ NATIVE_SYSTEM_HEADER_DIR = @NATIVE_SYSTEM_HEADER_DIR@
+ # Default cross SYSTEM_HEADER_DIR, to be overridden by targets.
+-ifeq (@includedir@,$(prefix)/include)
+-  CROSS_SYSTEM_HEADER_DIR = @CROSS_SYSTEM_HEADER_DIR@
+-else
+-  CROSS_SYSTEM_HEADER_DIR = @includedir@
+-endif
++CROSS_SYSTEM_HEADER_DIR = @CROSS_SYSTEM_HEADER_DIR@
+ 
+ # autoconf sets SYSTEM_HEADER_DIR to one of the above.
+ # Purge it of unnecessary internal relative paths
diff --git a/sys-devel/gcc/files/gcc-14.0.0_pre20230806-fix-bootstrap.patch b/sys-devel/gcc/files/gcc-14.0.0_pre20230806-fix-bootstrap.patch
new file mode 100644
index 0000000..5d57473
--- /dev/null
+++ b/sys-devel/gcc/files/gcc-14.0.0_pre20230806-fix-bootstrap.patch
@@ -0,0 +1,105 @@
+https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=af6cfd7b663909688c6ca55b6e9f859cdde4310f
+https://gcc.gnu.org/PR110926
+
+From af6cfd7b663909688c6ca55b6e9f859cdde4310f Mon Sep 17 00:00:00 2001
+From: liuhongt <hongtao.liu@intel.com>
+Date: Mon, 7 Aug 2023 11:10:52 +0800
+Subject: [PATCH] Fix ICE in rtl check when bootstrap.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=utf8
+Content-Transfer-Encoding: 8bit
+
+/var/tmp/portage/sys-devel/gcc-14.0.0_pre20230806/work/gcc-14-20230806/libgfortran/generated/matmul_i1.c: In function âmatmul_i1_avx512fâ:
+/var/tmp/portage/sys-devel/gcc-14.0.0_pre20230806/work/gcc-14-20230806/libgfortran/generated/matmul_i1.c:1781:1: internal compiler error: RTL check: expected elt 0 type 'i' or 'n', have 'w' (rtx const_int) in vpternlog_redundant_operand_mask, at config/i386/i386.cc:19460
+ 1781 | }
+      | ^
+0x5559de26dc2d rtl_check_failed_type2(rtx_def const*, int, int, int, char const*, int, char const*)
+        /var/tmp/portage/sys-devel/gcc-14.0.0_pre20230806/work/gcc-14-20230806/gcc/rtl.cc:761
+0x5559de340bfe vpternlog_redundant_operand_mask(rtx_def**)
+        /var/tmp/portage/sys-devel/gcc-14.0.0_pre20230806/work/gcc-14-20230806/gcc/config/i386/i386.cc:19460
+0x5559dfec67a6 split_44
+        /var/tmp/portage/sys-devel/gcc-14.0.0_pre20230806/work/gcc-14-20230806/gcc/config/i386/sse.md:12730
+0x5559dfec67a6 split_63
+        /var/tmp/portage/sys-devel/gcc-14.0.0_pre20230806/work/gcc-14-20230806/gcc/config/i386/sse.md:28428
+0x5559deb8a682 try_split(rtx_def*, rtx_insn*, int)
+        /var/tmp/portage/sys-devel/gcc-14.0.0_pre20230806/work/gcc-14-20230806/gcc/emit-rtl.cc:3800
+0x5559deb8adf2 try_split(rtx_def*, rtx_insn*, int)
+        /var/tmp/portage/sys-devel/gcc-14.0.0_pre20230806/work/gcc-14-20230806/gcc/emit-rtl.cc:3972
+0x5559def69194 split_insn
+        /var/tmp/portage/sys-devel/gcc-14.0.0_pre20230806/work/gcc-14-20230806/gcc/recog.cc:3385
+0x5559def70c57 split_all_insns()
+        /var/tmp/portage/sys-devel/gcc-14.0.0_pre20230806/work/gcc-14-20230806/gcc/recog.cc:3489
+0x5559def70d0c execute
+        /var/tmp/portage/sys-devel/gcc-14.0.0_pre20230806/work/gcc-14-20230806/gcc/recog.cc:4413
+
+Use INTVAL (imm_op) instead of XINT (imm_op, 0).
+
+gcc/ChangeLog:
+
+	PR target/110926
+	* config/i386/i386-protos.h
+	(vpternlog_redundant_operand_mask): Adjust parameter type.
+	* config/i386/i386.cc (vpternlog_redundant_operand_mask): Use
+	INTVAL instead of XINT, also adjust parameter type from rtx*
+	to rtx since the function only needs operands[4] in vpternlog
+	pattern.
+	(substitute_vpternlog_operands): Pass operands[4] instead of
+	operands to vpternlog_redundant_operand_mask.
+	* config/i386/sse.md: Ditto.
+--- a/gcc/config/i386/i386-protos.h
++++ b/gcc/config/i386/i386-protos.h
+@@ -70,7 +70,7 @@ extern machine_mode ix86_cc_mode (enum rtx_code, rtx, rtx);
+ extern int avx_vpermilp_parallel (rtx par, machine_mode mode);
+ extern int avx_vperm2f128_parallel (rtx par, machine_mode mode);
+ 
+-extern int vpternlog_redundant_operand_mask (rtx[]);
++extern int vpternlog_redundant_operand_mask (rtx);
+ extern void substitute_vpternlog_operands (rtx[]);
+ 
+ extern bool ix86_expand_strlen (rtx, rtx, rtx, rtx);
+--- a/gcc/config/i386/i386.cc
++++ b/gcc/config/i386/i386.cc
+@@ -19454,10 +19454,10 @@ avx_vperm2f128_parallel (rtx par, machine_mode mode)
+ /* Return a mask of VPTERNLOG operands that do not affect output.  */
+ 
+ int
+-vpternlog_redundant_operand_mask (rtx *operands)
++vpternlog_redundant_operand_mask (rtx pternlog_imm)
+ {
+   int mask = 0;
+-  int imm8 = XINT (operands[4], 0);
++  int imm8 = INTVAL (pternlog_imm);
+ 
+   if (((imm8 >> 4) & 0x0F) == (imm8 & 0x0F))
+     mask |= 1;
+@@ -19475,7 +19475,7 @@ vpternlog_redundant_operand_mask (rtx *operands)
+ void
+ substitute_vpternlog_operands (rtx *operands)
+ {
+-  int mask = vpternlog_redundant_operand_mask (operands);
++  int mask = vpternlog_redundant_operand_mask (operands[4]);
+ 
+   if (mask & 1) /* The first operand is redundant.  */
+     operands[1] = operands[2];
+--- a/gcc/config/i386/sse.md
++++ b/gcc/config/i386/sse.md
+@@ -12751,7 +12751,7 @@
+ 	   (match_operand:V 3 "memory_operand")
+ 	   (match_operand:SI 4 "const_0_to_255_operand")]
+ 	  UNSPEC_VTERNLOG))]
+-  "!reload_completed && vpternlog_redundant_operand_mask (operands) == 3"
++  "!reload_completed && vpternlog_redundant_operand_mask (operands[4]) == 3"
+   [(set (match_dup 0)
+ 	(match_dup 3))
+    (set (match_dup 0)
+@@ -12772,7 +12772,7 @@
+ 	   (match_operand:V 3 "nonimmediate_operand")
+ 	   (match_operand:SI 4 "const_0_to_255_operand")]
+ 	  UNSPEC_VTERNLOG))]
+-  "!reload_completed && vpternlog_redundant_operand_mask (operands) != 0"
++  "!reload_completed && vpternlog_redundant_operand_mask (operands[4]) != 0"
+   [(set (match_dup 0)
+ 	(unspec:V
+ 	  [(match_dup 1)
+-- 
+2.39.3
diff --git a/sys-devel/gcc/files/gcc-configure-LANG.patch b/sys-devel/gcc/files/gcc-configure-LANG.patch
new file mode 100644
index 0000000..d1b1b03
--- /dev/null
+++ b/sys-devel/gcc/files/gcc-configure-LANG.patch
@@ -0,0 +1,64 @@
+The LANG vars aren't reset early enough so when sed tries to use [a-zA-Z] in 
+option parsing, it may break.
+
+http://bugs.gentoo.org/103483
+
+--- configure
++++ configure
+@@ -54,6 +54,19 @@
+ infodir='${prefix}/info'
+ mandir='${prefix}/man'
+ 
++# NLS nuisances.
++for as_var in \
++  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
++  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
++  LC_TELEPHONE LC_TIME
++do
++  if (set +x; test -z "`(eval $as_var=C; export $as_var) 2>&1`"); then
++    eval $as_var=C; export $as_var
++  else
++    unset $as_var
++  fi
++done
++
+ # Initialize some other variables.
+ subdirs=
+ MFLAGS= MAKEFLAGS=
+@@ -452,16 +463,6 @@
+   esac
+ done
+ 
+-# NLS nuisances.
+-# Only set these to C if already set.  These must not be set unconditionally
+-# because not all systems understand e.g. LANG=C (notably SCO).
+-# Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'!
+-# Non-C LC_CTYPE values break the ctype check.
+-if test "${LANG+set}"   = set; then LANG=C;   export LANG;   fi
+-if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
+-if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
+-if test "${LC_CTYPE+set}"    = set; then LC_CTYPE=C;    export LC_CTYPE;    fi
+-
+ # confdefs.h avoids OS command line length limits that DEFS can exceed.
+ rm -rf conftest* confdefs.h
+ # AIX cpp loses on an empty file, so make sure it contains at least a newline.
+@@ -1850,6 +1850,19 @@
+ # Compiler output produced by configure, useful for debugging
+ # configure, is in ./config.log if it exists.
+ 
++# NLS nuisances.
++for as_var in \
++  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
++  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
++  LC_TELEPHONE LC_TIME
++do
++  if (set +x; test -z "`(eval \$as_var=C; export \$as_var) 2>&1`"); then
++    eval \$as_var=C; export \$as_var
++  else
++    unset \$as_var
++  fi
++done
++
+ ac_cs_usage="Usage: $CONFIG_STATUS [--recheck] [--version] [--help]"
+ for ac_option
+ do
diff --git a/sys-devel/gcc/files/gcc-configure-texinfo.patch b/sys-devel/gcc/files/gcc-configure-texinfo.patch
new file mode 100644
index 0000000..99e9099
--- /dev/null
+++ b/sys-devel/gcc/files/gcc-configure-texinfo.patch
@@ -0,0 +1,16 @@
+Chances are quite good that the installed makeinfo is sufficient.
+So ignore false positives where the makeinfo installed is so new
+that it violates the cheesy version grep.
+
+http://bugs.gentoo.org/198182
+
+--- a/configure
++++ b/configure
+@@ -3573,6 +3573,6 @@
+       :
+     else
+-      MAKEINFO="$MISSING makeinfo"
++      :
+     fi
+     ;;
+ 
diff --git a/sys-devel/gcc/gcc-13.2.1_p20230826-r1.ebuild b/sys-devel/gcc/gcc-13.2.1_p20230826-r1.ebuild
new file mode 100644
index 0000000..3f07aa1
--- /dev/null
+++ b/sys-devel/gcc/gcc-13.2.1_p20230826-r1.ebuild
@@ -0,0 +1,74 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+TOOLCHAIN_PATCH_DEV="sam"
+PATCH_GCC_VER="13.2.0"
+PATCH_VER="7"
+MUSL_VER="2"
+MUSL_GCC_VER="13.2.0"
+
+if [[ ${PV} == *.9999 ]] ; then
+	MY_PV_2=$(ver_cut 2)
+	MY_PV_3=1
+	if [[ ${MY_PV_2} == 0 ]] ; then
+		MY_PV_2=0
+		MY_PV_3=0
+	else
+		MY_PV_2=$((${MY_PV_2} - 1))
+	fi
+
+	# e.g. 12.2.9999 -> 12.1.1
+	TOOLCHAIN_GCC_PV=$(ver_cut 1).${MY_PV_2}.${MY_PV_3}
+elif [[ -n ${TOOLCHAIN_GCC_RC} ]] ; then
+	# Cheesy hack for RCs
+	MY_PV=$(ver_cut 1).$((($(ver_cut 2) + 1))).$((($(ver_cut 3) - 1)))-RC-$(ver_cut 5)
+	MY_P=${PN}-${MY_PV}
+	GCC_TARBALL_SRC_URI="mirror://gcc/snapshots/${MY_PV}/${MY_P}.tar.xz"
+	TOOLCHAIN_SET_S=no
+	S="${WORKDIR}"/${MY_P}
+fi
+
+inherit toolchain
+
+# gcc barfs with our nonstandard riscv multilib construction, so let's
+# reset it to default and trust the compatibility symlinks (multilib only)
+if [[ ${CTARGET} == riscv* ]] && [[ ${MULTILIB_ABIS} =~ " " ]] ; then
+	export LIBDIR_lp64d=lib64/lp64d
+	export LIBDIR_lp64=lib64/lp64
+	export LIBDIR_ilp32d=lib32/ilp32d
+	export LIBDIR_ilp32=lib32/ilp32
+fi
+
+if tc_is_live ; then
+	# Needs to be after inherit (for now?), bug #830908
+	EGIT_BRANCH=releases/gcc-$(ver_cut 1)
+elif [[ -z ${TOOLCHAIN_USE_GIT_PATCHES} ]] ; then
+	# Don't keyword live ebuilds
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+	:;
+fi
+
+if [[ ${CATEGORY} != cross-* ]] ; then
+	# Technically only if USE=hardened *too* right now, but no point in complicating it further.
+	# If GCC is enabling CET by default, we need glibc to be built with support for it.
+	# bug #830454
+	RDEPEND="elibc_glibc? ( sys-libs/glibc[cet(-)?] )"
+	DEPEND="${RDEPEND}"
+	BDEPEND=">=${CATEGORY}/binutils-2.30[cet(-)?]"
+fi
+
+src_prepare() {
+	local p upstreamed_patches=(
+		# add them here
+	)
+	for p in "${upstreamed_patches[@]}"; do
+		rm -v "${WORKDIR}/patch/${p}" || die
+	done
+
+	toolchain_src_prepare
+
+	eapply "${FILESDIR}"/${PN}-13-fix-cross-fixincludes.patch
+	eapply_user
+}
diff --git a/sys-devel/gcc/gcc-13.2.1_p20230826.ebuild b/sys-devel/gcc/gcc-13.2.1_p20230826.ebuild
new file mode 100644
index 0000000..b4f76ef
--- /dev/null
+++ b/sys-devel/gcc/gcc-13.2.1_p20230826.ebuild
@@ -0,0 +1,65 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+TOOLCHAIN_PATCH_DEV="sam"
+PATCH_GCC_VER="13.2.0"
+PATCH_VER="7"
+MUSL_VER="2"
+MUSL_GCC_VER="13.2.0"
+
+if [[ ${PV} == *.9999 ]] ; then
+	MY_PV_2=$(ver_cut 2)
+	MY_PV_3=1
+	if [[ ${MY_PV_2} == 0 ]] ; then
+		MY_PV_2=0
+		MY_PV_3=0
+	else
+		MY_PV_2=$((${MY_PV_2} - 1))
+	fi
+
+	# e.g. 12.2.9999 -> 12.1.1
+	TOOLCHAIN_GCC_PV=$(ver_cut 1).${MY_PV_2}.${MY_PV_3}
+elif [[ -n ${TOOLCHAIN_GCC_RC} ]] ; then
+	# Cheesy hack for RCs
+	MY_PV=$(ver_cut 1).$((($(ver_cut 2) + 1))).$((($(ver_cut 3) - 1)))-RC-$(ver_cut 5)
+	MY_P=${PN}-${MY_PV}
+	GCC_TARBALL_SRC_URI="mirror://gcc/snapshots/${MY_PV}/${MY_P}.tar.xz"
+	TOOLCHAIN_SET_S=no
+	S="${WORKDIR}"/${MY_P}
+fi
+
+inherit toolchain
+
+if tc_is_live ; then
+	# Needs to be after inherit (for now?), bug #830908
+	EGIT_BRANCH=releases/gcc-$(ver_cut 1)
+elif [[ -z ${TOOLCHAIN_USE_GIT_PATCHES} ]] ; then
+	# Don't keyword live ebuilds
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+	:;
+fi
+
+if [[ ${CATEGORY} != cross-* ]] ; then
+	# Technically only if USE=hardened *too* right now, but no point in complicating it further.
+	# If GCC is enabling CET by default, we need glibc to be built with support for it.
+	# bug #830454
+	RDEPEND="elibc_glibc? ( sys-libs/glibc[cet(-)?] )"
+	DEPEND="${RDEPEND}"
+	BDEPEND=">=${CATEGORY}/binutils-2.30[cet(-)?]"
+fi
+
+src_prepare() {
+	local p upstreamed_patches=(
+		# add them here
+	)
+	for p in "${upstreamed_patches[@]}"; do
+		rm -v "${WORKDIR}/patch/${p}" || die
+	done
+
+	toolchain_src_prepare
+
+	eapply "${FILESDIR}"/${PN}-13-fix-cross-fixincludes.patch
+	eapply_user
+}
diff --git a/sys-devel/gcc/metadata.xml b/sys-devel/gcc/metadata.xml
new file mode 100644
index 0000000..9147176
--- /dev/null
+++ b/sys-devel/gcc/metadata.xml
@@ -0,0 +1,113 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>toolchain@gentoo.org</email>
+		<name>Gentoo Toolchain Project</name>
+	</maintainer>
+	<use>
+		<flag name="ada">Build the ADA language (GNAT) frontend</flag>
+		<flag name="cet" restrict="&gt;=sys-devel/gcc-10">
+			Enable support for Intel Control Flow Enforcement Technology (CET).
+
+			Only effective on amd64/x86.
+
+			Only provides benefits on newer CPUs. For Intel, the CPU
+			must be at least as new as Tiger Lake. For AMD, it must be
+			at least as new as Zen 3. This is harmless on older CPUs,
+			but provides no benefit either.
+
+			When combined with USE=hardened, GCC will set -fcf-protection
+			by default when building software. The effect is minimal
+			on systems which do not support it, other than a possible
+			small increase in codesize for the NOPs. The generated
+			code is therefore compatible with i686 at the earliest.
+		</flag>
+		<flag name="d">Enable support for the D programming language</flag>
+		<flag name="debug">
+			Enables GCC's 'checking' facility via --enable-checking=yes,extra,rtl.
+
+			This adds checks to various compiler passes for integrity and input
+			validation. This can help catch possible miscompilations early as
+			well as latent bugs which could become real problems in future, but
+			at the cost of slower compile times when using GCC.
+
+			Unrelated to backtraces.
+		</flag>
+		<flag name="default-stack-clash-protection">
+			Build packages with stack clash protection on by default as
+			a hardening measure.
+
+			This enables -fstack-clash-protection by default which protects against
+			large memory allocations allowing stack smashing.
+
+			May cause slightly increased codesize, but modern compilers
+			have been adapted to optimize well for this case, as
+			this mitigation is now quite common.
+
+			See https://developers.redhat.com/blog/2020/05/22/stack-clash-mitigation-in-gcc-part-3
+			and https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt.
+		</flag>
+		<flag name="default-znow">
+			Request full relocation on start from ld.so by default.
+
+			This sets the -z,now (BIND_NOW) flag by default on all linker invocations. By
+			resolving all dynamic symbols at application startup, parts of the program
+			can be made read-only as a hardening measure.
+
+			This is closely related to RELRO which is also separately
+			enabled by default.
+
+			In some applications with many unresolved symbols (heavily plugin based,
+			for example), startup time may be impacted.
+		</flag>
+		<flag name="fixed-point">Enable fixed-point arithmetic support for MIPS targets in gcc (Warning: significantly increases compile time!)</flag>
+		<flag name="go">Build the GCC Go language frontend.</flag>
+		<flag name="graphite">Add support for the framework for loop optimizations based on a polyhedral intermediate representation</flag>
+		<flag name="ieee-long-double">Use accelerated 128-bit IEEE long double ABI (ppc64le only)</flag>
+		<flag name="jit">Enable libgccjit so other applications can embed gcc for Just-In-Time compilation.</flag>
+		<flag name="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)</flag>
+		<flag name="lto">
+			Build using Link Time Optimizations (LTO).
+
+			Note that GCC is always built with support for building
+			other programs with LTO. This USE flag is for whether
+			GCC itself is built and optimized with LTO.
+		</flag>
+		<flag name="modula2">Build the GCC Modula-2 language frontend.</flag>
+		<flag name="nptl">Enable support for Native POSIX Threads Library, the new threading module (requires linux-2.6 or better usually)</flag>
+		<flag name="objc">Build support for the Objective C code language</flag>
+		<flag name="objc++">Build support for the Objective C++ language</flag>
+		<flag name="objc-gc">Build support for the Objective C code language Garbage Collector</flag>
+		<flag name="pgo">
+			Build GCC using Profile Guided Optimization (PGO).
+
+			GCC will build itself and then analyze the just-built
+			binary and then rebuild itself using the data obtained
+			from analysis of codepaths taken.
+
+			It does not affect whether GCC itself supports PGO
+			when building other software.
+
+			This substantially increases the build time needed for
+			building GCC itself.
+		</flag>
+		<flag name="sanitize">
+			Build support for various sanitizer functions (ASAN/TSAN/etc...)
+			to find runtime problems in applications.
+		</flag>
+		<flag name="ssp">Build packages with stack smashing protection on by default</flag>
+		<flag name="systemtap">enable systemtap static probe points</flag>
+		<flag name="vtv">
+			Build support for virtual table verification (a C++ hardening feature).
+
+			This does not control whether GCC defaults to using VTV>
+
+			Note that actually using VTV breaks ABI and hence the whole
+			system must be built with -fvtable-verify.
+		</flag>
+	</use>
+	<upstream>
+		<remote-id type="cpe">cpe:/a:gnu:gcc</remote-id>
+	</upstream>
+</pkgmetadata>