[gentoo-commits] repo/proj/prefix:master commit in: eclass/

["Fabian Groffen" <grobian@gentoo.org>]

commit:     6327d79a8cc29d35138f51110c6fb63680c15a40
Author:     Fabian Groffen <grobian <AT> gentoo <DOT> org>
AuthorDate: Sat Aug 10 14:06:40 2024 +0000
Commit:     Fabian Groffen <grobian <AT> gentoo <DOT> org>
CommitDate: Sat Aug 10 14:06:40 2024 +0000
URL:        https://gitweb.gentoo.org/repo/proj/prefix.git/commit/?id=6327d79a

eclass/toolchain-funcs: use gx86 version

Signed-off-by: Fabian Groffen <grobian <AT> gentoo.org>

 eclass/toolchain-funcs.eclass | 1277 -----------------------------------------
 1 file changed, 1277 deletions(-)

diff --git a/eclass/toolchain-funcs.eclass b/eclass/toolchain-funcs.eclass
deleted file mode 100644
index a39b9c6111..0000000000
--- a/eclass/toolchain-funcs.eclass
+++ /dev/null
@@ -1,1277 +0,0 @@
-# Copyright 2002-2024 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-# @ECLASS: toolchain-funcs.eclass
-# @MAINTAINER:
-# Toolchain Ninjas <toolchain@gentoo.org>
-# @SUPPORTED_EAPIS: 6 7 8
-# @BLURB: functions to query common info about the toolchain
-# @DESCRIPTION:
-# The toolchain-funcs aims to provide a complete suite of functions
-# for gleaning useful information about the toolchain and to simplify
-# ugly things like cross-compiling and multilib.  All of this is done
-# in such a way that you can rely on the function always returning
-# something sane.
-
-case ${EAPI} in
-	6|7|8) ;;
-	*) die "${ECLASS}: EAPI ${EAPI:-0} not supported" ;;
-esac
-
-if [[ -z ${_TOOLCHAIN_FUNCS_ECLASS} ]]; then
-_TOOLCHAIN_FUNCS_ECLASS=1
-
-inherit multilib prefix
-
-# tc-getPROG <VAR [search vars]> <default> [tuple]
-_tc-getPROG() {
-	local tuple=$1
-	local v var vars=$2
-	local prog=( $3 )
-
-	var=${vars%% *}
-	for v in ${vars} ; do
-		if [[ -n ${!v} ]] ; then
-			export ${var}="${!v}"
-			echo "${!v}"
-			return 0
-		fi
-	done
-
-	local search=
-	[[ -n $4 ]] && search=$(type -p $4-${prog[0]})
-	[[ -z ${search} && -n ${!tuple} ]] && search=$(type -p ${!tuple}-${prog[0]})
-	[[ -n ${search} ]] && prog[0]=${search##*/}
-
-	export ${var}="${prog[*]}"
-	echo "${!var}"
-}
-tc-getBUILD_PROG() {
-	local vars="BUILD_$1 $1_FOR_BUILD HOST$1"
-	# respect host vars if not cross-compiling
-	# https://bugs.gentoo.org/630282
-	tc-is-cross-compiler || vars+=" $1"
-	_tc-getPROG CBUILD "${vars}" "${@:2}"
-}
-tc-getPROG() { _tc-getPROG CHOST "$@"; }
-
-# @FUNCTION: tc-getAR
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the archiver
-tc-getAR() { tc-getPROG AR ar "$@"; }
-# @FUNCTION: tc-getAS
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the assembler
-tc-getAS() { tc-getPROG AS as "$@"; }
-# @FUNCTION: tc-getCC
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the C compiler
-tc-getCC() { tc-getPROG CC gcc "$@"; }
-# @FUNCTION: tc-getCPP
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the C preprocessor
-tc-getCPP() { tc-getPROG CPP "${CC:-gcc} -E" "$@"; }
-# @FUNCTION: tc-getCXX
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the C++ compiler
-tc-getCXX() { tc-getPROG CXX g++ "$@"; }
-# @FUNCTION: tc-getLD
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the linker
-tc-getLD() { tc-getPROG LD ld "$@"; }
-# @FUNCTION: tc-getSTRINGS
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the strings program
-tc-getSTRINGS() { tc-getPROG STRINGS strings "$@"; }
-# @FUNCTION: tc-getSTRIP
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the strip program
-tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
-# @FUNCTION: tc-getNM
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the symbol/object thingy
-tc-getNM() { tc-getPROG NM nm "$@"; }
-# @FUNCTION: tc-getRANLIB
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the archive indexer
-tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
-# @FUNCTION: tc-getREADELF
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the ELF reader
-tc-getREADELF() { tc-getPROG READELF readelf "$@"; }
-# @FUNCTION: tc-getOBJCOPY
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the object copier
-tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
-# @FUNCTION: tc-getOBJDUMP
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the object dumper
-tc-getOBJDUMP() { tc-getPROG OBJDUMP objdump "$@"; }
-# @FUNCTION: tc-getF77
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the Fortran 77 compiler
-tc-getF77() { tc-getPROG F77 gfortran "$@"; }
-# @FUNCTION: tc-getFC
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the Fortran 90 compiler
-tc-getFC() { tc-getPROG FC gfortran "$@"; }
-# @FUNCTION: tc-getGCJ
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the java compiler
-tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
-# @FUNCTION: tc-getGO
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the Go compiler
-tc-getGO() { tc-getPROG GO gccgo "$@"; }
-# @FUNCTION: tc-getPKG_CONFIG
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the pkg-config tool
-tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
-# @FUNCTION: tc-getRC
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the Windows resource compiler
-tc-getRC() { tc-getPROG RC windres "$@"; }
-# @FUNCTION: tc-getDLLWRAP
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the Windows dllwrap utility
-tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
-
-# @FUNCTION: tc-getBUILD_AR
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the archiver for building binaries to run on the build machine
-tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
-# @FUNCTION: tc-getBUILD_AS
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the assembler for building binaries to run on the build machine
-tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
-# @FUNCTION: tc-getBUILD_CC
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the C compiler for building binaries to run on the build machine
-tc-getBUILD_CC() { tc-getBUILD_PROG CC gcc "$@"; }
-# @FUNCTION: tc-getBUILD_CPP
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the C preprocessor for building binaries to run on the build machine
-tc-getBUILD_CPP() { tc-getBUILD_PROG CPP "$(tc-getBUILD_CC) -E" "$@"; }
-# @FUNCTION: tc-getBUILD_CXX
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the C++ compiler for building binaries to run on the build machine
-tc-getBUILD_CXX() { tc-getBUILD_PROG CXX g++ "$@"; }
-# @FUNCTION: tc-getBUILD_LD
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the linker for building binaries to run on the build machine
-tc-getBUILD_LD() { tc-getBUILD_PROG LD ld "$@"; }
-# @FUNCTION: tc-getBUILD_STRINGS
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the strings program for building binaries to run on the build machine
-tc-getBUILD_STRINGS() { tc-getBUILD_PROG STRINGS strings "$@"; }
-# @FUNCTION: tc-getBUILD_STRIP
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the strip program for building binaries to run on the build machine
-tc-getBUILD_STRIP() { tc-getBUILD_PROG STRIP strip "$@"; }
-# @FUNCTION: tc-getBUILD_NM
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the symbol/object thingy for building binaries to run on the build machine
-tc-getBUILD_NM() { tc-getBUILD_PROG NM nm "$@"; }
-# @FUNCTION: tc-getBUILD_RANLIB
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the archive indexer for building binaries to run on the build machine
-tc-getBUILD_RANLIB() { tc-getBUILD_PROG RANLIB ranlib "$@"; }
-# @FUNCTION: tc-getBUILD_READELF
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the ELF reader for building binaries to run on the build machine
-tc-getBUILD_READELF() { tc-getBUILD_PROG READELF readelf "$@"; }
-# @FUNCTION: tc-getBUILD_OBJCOPY
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the object copier for building binaries to run on the build machine
-tc-getBUILD_OBJCOPY() { tc-getBUILD_PROG OBJCOPY objcopy "$@"; }
-# @FUNCTION: tc-getBUILD_PKG_CONFIG
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the pkg-config tool for building binaries to run on the build machine
-tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
-
-# @FUNCTION: tc-getTARGET_CPP
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the C preprocessor for the toolchain being built (or used)
-tc-getTARGET_CPP() {
-	if [[ -n ${CTARGET} ]]; then
-		_tc-getPROG CTARGET TARGET_CPP "gcc -E" "$@"
-	else
-		tc-getCPP "$@"
-	fi
-}
-
-# @FUNCTION: tc-export
-# @USAGE: <list of toolchain variables>
-# @DESCRIPTION:
-# Quick way to export a bunch of compiler vars at once.
-tc-export() {
-	local var
-	for var in "$@" ; do
-		[[ $(type -t "tc-get${var}") != "function" ]] && die "tc-export: invalid export variable '${var}'"
-		"tc-get${var}" > /dev/null
-	done
-}
-
-# @FUNCTION: tc-is-cross-compiler
-# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
-tc-is-cross-compiler() {
-	[[ ${CBUILD:-${CHOST}} != ${CHOST} ]]
-}
-
-# @FUNCTION: tc-cpp-is-true
-# @USAGE: <condition> [cpp flags]
-# @RETURN: Shell true if the condition is true, shell false otherwise.
-# @DESCRIPTION:
-# Evaluate the given condition using the C preprocessor for CTARGET, if
-# defined, or CHOST. Additional arguments are passed through to the cpp
-# command. A typical condition would be in the form defined(__FOO__).
-tc-cpp-is-true() {
-	local CONDITION=${1}
-	shift
-
-	$(tc-getTARGET_CPP) "${@}" -P - <<-EOF >/dev/null 2>&1
-		#if ${CONDITION}
-		true
-		#else
-		#error false
-		#endif
-	EOF
-}
-
-# @FUNCTION: tc-detect-is-softfloat
-# @RETURN: Shell true if detection was possible, shell false otherwise
-# @DESCRIPTION:
-# Detect whether the CTARGET (or CHOST) toolchain is a softfloat based
-# one by examining the toolchain's output, if possible.  Outputs a value
-# alike tc-is-softfloat if detection was possible.
-tc-detect-is-softfloat() {
-	# If fetching CPP falls back to the default (gcc -E) then fail
-	# detection as this may not be the correct toolchain.
-	[[ $(tc-getTARGET_CPP) == "gcc -E" ]] && return 1
-
-	case ${CTARGET:-${CHOST}} in
-		# Avoid autodetection for bare-metal targets. bug #666896
-		*-newlib|*-elf|*-eabi|arm64-apple-darwin*)
-			return 1 ;;
-
-		# arm-unknown-linux-gnueabi is ambiguous. We used to treat it as
-		# hardfloat but we now treat it as softfloat like most everyone
-		# else. Check existing toolchains to respect existing systems.
-		arm*)
-			if tc-cpp-is-true "defined(__ARM_PCS_VFP)"; then
-				echo "no"
-			else
-				# Confusingly __SOFTFP__ is defined only when
-				# -mfloat-abi is soft, not softfp.
-				if tc-cpp-is-true "defined(__SOFTFP__)"; then
-					echo "yes"
-				else
-					echo "softfp"
-				fi
-			fi
-
-			return 0 ;;
-		*)
-			return 1 ;;
-	esac
-}
-
-# @FUNCTION: tc-tuple-is-softfloat
-# @RETURN: See tc-is-softfloat for the possible values.
-# @DESCRIPTION:
-# Determine whether the CTARGET (or CHOST) toolchain is a softfloat
-# based one solely from the tuple.
-tc-tuple-is-softfloat() {
-	local CTARGET=${CTARGET:-${CHOST}}
-	case ${CTARGET//_/-} in
-		bfin*|h8300*)
-			echo "only" ;;
-		*-softfloat-*)
-			echo "yes" ;;
-		*-softfp-*)
-			echo "softfp" ;;
-		arm*-hardfloat-*|arm*eabihf)
-			echo "no" ;;
-		# bare-metal targets have their defaults. bug #666896
-		*-newlib|*-elf|*-eabi)
-			echo "no" ;;
-		arm64-apple-darwin*)
-			echo "no" ;;
-		arm*)
-			echo "yes" ;;
-		*)
-			echo "no" ;;
-	esac
-}
-
-# @FUNCTION: tc-is-softfloat
-# @DESCRIPTION:
-# See if this toolchain is a softfloat based one.
-# @CODE
-# The possible return values:
-#  - only:   the target is always softfloat (never had fpu)
-#  - yes:    the target should support softfloat
-#  - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
-#  - no:     the target doesn't support softfloat
-# @CODE
-# This allows us to react differently where packages accept
-# softfloat flags in the case where support is optional, but
-# rejects softfloat flags where the target always lacks an fpu.
-tc-is-softfloat() {
-	tc-detect-is-softfloat || tc-tuple-is-softfloat
-}
-
-# @FUNCTION: tc-is-static-only
-# @DESCRIPTION:
-# Return shell true if the target does not support shared libs, shell false
-# otherwise.
-tc-is-static-only() {
-	local host=${CTARGET:-${CHOST}}
-
-	# *MiNT doesn't have shared libraries, only platform so far
-	[[ ${host} == *-mint* ]]
-}
-
-# @FUNCTION: tc-stack-grows-down
-# @DESCRIPTION:
-# Return shell true if the stack grows down.  This is the default behavior
-# for the vast majority of systems out there and usually projects shouldn't
-# care about such internal details.
-tc-stack-grows-down() {
-	# List the few that grow up.
-	case ${ARCH} in
-		hppa|metag) return 1 ;;
-	esac
-
-	# Assume all others grow down.
-	return 0
-}
-
-# @FUNCTION: tc-export_build_env
-# @USAGE: [compiler variables]
-# @DESCRIPTION:
-# Export common build related compiler settings.
-tc-export_build_env() {
-	tc-export "$@"
-	if tc-is-cross-compiler; then
-		# Some build envs will initialize vars like:
-		# : ${BUILD_LDFLAGS:-${LDFLAGS}}
-		# So make sure all variables are non-empty. #526734
-		: "${BUILD_CFLAGS:=-O1 -pipe}"
-		: "${BUILD_CXXFLAGS:=-O1 -pipe}"
-		: "${BUILD_CPPFLAGS:= }"
-		: "${BUILD_LDFLAGS:= }"
-	else
-		# https://bugs.gentoo.org/654424
-		: "${BUILD_CFLAGS:=${CFLAGS}}"
-		: "${BUILD_CXXFLAGS:=${CXXFLAGS}}"
-		: "${BUILD_CPPFLAGS:=${CPPFLAGS}}"
-		: "${BUILD_LDFLAGS:=${LDFLAGS}}"
-	fi
-	export BUILD_{C,CXX,CPP,LD}FLAGS
-
-	# Some packages use XXX_FOR_BUILD.
-	local v
-	for v in BUILD_{C,CXX,CPP,LD}FLAGS ; do
-		export ${v#BUILD_}_FOR_BUILD="${!v}"
-	done
-}
-
-# @FUNCTION: tc-env_build
-# @USAGE: <command> [command args]
-# @DESCRIPTION:
-# Setup the compile environment to the build tools and then execute the
-# specified command.  We use tc-getBUILD_XX here so that we work with
-# all of the semi-[non-]standard env vars like $BUILD_CC which often
-# the target build system does not check.
-tc-env_build() {
-	tc-export_build_env
-	CFLAGS=${BUILD_CFLAGS} \
-	CXXFLAGS=${BUILD_CXXFLAGS} \
-	CPPFLAGS=${BUILD_CPPFLAGS} \
-	LDFLAGS=${BUILD_LDFLAGS} \
-	AR=$(tc-getBUILD_AR) \
-	AS=$(tc-getBUILD_AS) \
-	CC=$(tc-getBUILD_CC) \
-	CPP=$(tc-getBUILD_CPP) \
-	CXX=$(tc-getBUILD_CXX) \
-	LD=$(tc-getBUILD_LD) \
-	NM=$(tc-getBUILD_NM) \
-	PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
-	RANLIB=$(tc-getBUILD_RANLIB) \
-	READELF=$(tc-getBUILD_READELF) \
-	"$@"
-}
-
-# @FUNCTION: econf_build
-# @USAGE: [econf flags]
-# @DESCRIPTION:
-# Sometimes we need to locally build up some tools to run on CBUILD because
-# the package has helper utils which are compiled+executed when compiling.
-# This won't work when cross-compiling as the CHOST is set to a target which
-# we cannot natively execute.
-#
-# For example, the python package will build up a local python binary using
-# a portable build system (configure+make), but then use that binary to run
-# local python scripts to build up other components of the overall python.
-# We cannot rely on the python binary in $PATH as that often times will be
-# a different version, or not even installed in the first place.  Instead,
-# we compile the code in a different directory to run on CBUILD, and then
-# use that binary when compiling the main package to run on CHOST.
-#
-# For example, with newer EAPIs, you'd do something like:
-# @CODE
-# src_configure() {
-# 	ECONF_SOURCE=${S}
-# 	if tc-is-cross-compiler ; then
-# 		mkdir "${WORKDIR}"/${CBUILD} || die
-# 		pushd "${WORKDIR}"/${CBUILD} >/dev/null || die
-# 		econf_build --disable-some-unused-stuff
-# 		popd >/dev/null || die
-# 	fi
-# 	... normal build paths ...
-# }
-# src_compile() {
-# 	if tc-is-cross-compiler ; then
-# 		pushd "${WORKDIR}"/${CBUILD} >/dev/null || die
-# 		emake one-or-two-build-tools
-# 		ln/mv build-tools to normal build paths in ${S}/ || die
-# 		popd >/dev/null || die
-# 	fi
-# 	... normal build paths ...
-# }
-# @CODE
-econf_build() {
-	local CBUILD=${CBUILD:-${CHOST}}
-	econf_env() { CHOST=${CBUILD} econf "$@"; }
-	tc-env_build econf_env "$@"
-}
-
-# @FUNCTION: tc-ld-is-gold
-# @USAGE: [toolchain prefix]
-# @DESCRIPTION:
-# Return true if the current linker is set to gold.
-tc-ld-is-gold() {
-	local out
-
-	# Ensure ld output is in English.
-	local -x LC_ALL=C
-
-	# First check the linker directly.
-	out=$($(tc-getLD "$@") --version 2>&1)
-	if [[ ${out} == *"GNU gold"* ]] ; then
-		return 0
-	fi
-
-	# Then see if they're selecting gold via compiler flags.
-	# Note: We're assuming they're using LDFLAGS to hold the
-	# options and not CFLAGS/CXXFLAGS.
-	local base="${T}/test-tc-gold"
-	cat <<-EOF > "${base}.c"
-	int main(void) { return 0; }
-	EOF
-	out=$($(tc-getCC "$@") ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} -Wl,--version "${base}.c" -o "${base}" 2>&1)
-	rm -f "${base}"*
-	if [[ ${out} == *"GNU gold"* ]] ; then
-		return 0
-	fi
-
-	# No gold here!
-	return 1
-}
-
-# @FUNCTION: tc-ld-is-lld
-# @USAGE: [toolchain prefix]
-# @DESCRIPTION:
-# Return true if the current linker is set to lld.
-tc-ld-is-lld() {
-	local out
-
-	# Ensure ld output is in English.
-	local -x LC_ALL=C
-
-	# First check the linker directly.
-	out=$($(tc-getLD "$@") --version 2>&1)
-	if [[ ${out} == *"LLD"* ]] ; then
-		return 0
-	fi
-
-	# Then see if they're selecting lld via compiler flags.
-	# Note: We're assuming they're using LDFLAGS to hold the
-	# options and not CFLAGS/CXXFLAGS.
-	local base="${T}/test-tc-lld"
-	cat <<-EOF > "${base}.c"
-	int main(void) { return 0; }
-	EOF
-	out=$($(tc-getCC "$@") ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} -Wl,--version "${base}.c" -o "${base}" 2>&1)
-	rm -f "${base}"*
-	if [[ ${out} == *"LLD"* ]] ; then
-		return 0
-	fi
-
-	# No lld here!
-	return 1
-}
-
-# @FUNCTION: tc-ld-disable-gold
-# @USAGE: [toolchain prefix]
-# @DESCRIPTION:
-# If the gold linker is currently selected, configure the compilation
-# settings so that we use the older bfd linker instead.
-tc-ld-disable-gold() {
-	tc-ld-is-gold "$@" && tc-ld-force-bfd "$@"
-}
-
-# @FUNCTION: tc-ld-force-bfd
-# @USAGE: [toolchain prefix]
-# @DESCRIPTION:
-# If the gold or lld linker is currently selected, configure the compilation
-# settings so that we use the bfd linker instead.
-tc-ld-force-bfd() {
-	if ! tc-ld-is-gold "$@" && ! tc-ld-is-lld "$@" ; then
-		# They aren't using gold or lld, so nothing to do!
-		return
-	fi
-
-	ewarn "Forcing usage of the BFD linker"
-
-	# Set up LD to point directly to bfd if it's available.
-	# Unset LD first so we get the default value from tc-getLD.
-	local ld=$(unset LD; tc-getLD "$@")
-	local bfd_ld="${ld}.bfd"
-	local path_ld=$(type -P "${bfd_ld}" 2>/dev/null)
-	[[ -e ${path_ld} ]] && export LD=${bfd_ld}
-
-	# Set up LDFLAGS to select bfd based on the gcc / clang version.
-	if tc-is-gcc || tc-is-clang ; then
-		export LDFLAGS="${LDFLAGS} -fuse-ld=bfd"
-	fi
-}
-
-# @FUNCTION: _tc-has-openmp
-# @INTERNAL
-# @USAGE: [toolchain prefix]
-# @DESCRIPTION:
-# See if the toolchain supports OpenMP.
-_tc-has-openmp() {
-	local base="${T}/test-tc-openmp"
-	cat <<-EOF > "${base}.c"
-	#include <omp.h>
-	int main(void) {
-		int nthreads, tid, ret = 0;
-		#pragma omp parallel private(nthreads, tid)
-		{
-		tid = omp_get_thread_num();
-		nthreads = omp_get_num_threads(); ret += tid + nthreads;
-		}
-		return ret;
-	}
-	EOF
-	$(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
-	local ret=$?
-	rm -f "${base}"*
-	return ${ret}
-}
-
-# @FUNCTION: tc-check-openmp
-# @DESCRIPTION:
-# Test for OpenMP support with the current compiler and error out with
-# a clear error message, telling the user how to rectify the missing
-# OpenMP support that has been requested by the ebuild.
-#
-# You should test for any necessary OpenMP support in pkg_pretend in order to
-# warn the user of required toolchain changes.  You must still check for OpenMP
-# support at build-time, e.g.
-# @CODE
-# pkg_pretend() {
-#	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
-# }
-#
-# pkg_setup() {
-#	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
-# }
-# @CODE
-tc-check-openmp() {
-	if ! _tc-has-openmp; then
-		eerror "Your current compiler does not support OpenMP!"
-
-		if tc-is-gcc; then
-			eerror "Enable OpenMP support by building sys-devel/gcc with USE=\"openmp\"."
-		elif tc-is-clang; then
-			eerror "OpenMP support in sys-devel/clang is provided by sys-libs/libomp."
-		fi
-
-		die "Active compiler does not have required support for OpenMP"
-	fi
-}
-
-# @FUNCTION: tc-has-tls
-# @USAGE: [-s|-c|-l] [toolchain prefix]
-# @DESCRIPTION:
-# See if the toolchain supports thread local storage (TLS).  Use -s to test the
-# compiler, -c to also test the assembler, and -l to also test the C library
-# (the default).
-tc-has-tls() {
-	local base="${T}/test-tc-tls"
-	cat <<-EOF > "${base}.c"
-	int foo(int *i) {
-		static __thread int j = 0;
-		return *i ? j : *i;
-	}
-	EOF
-
-	local flags
-	case $1 in
-		-s) flags="-S";;
-		-c) flags="-c";;
-		-l) ;;
-		-*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
-	esac
-	case "${CHOST}" in
-		*-darwin*)
-			# bug #612370
-			: ${flags:=-dynamiclib}
-			;;
-		*)
-			: ${flags:=-fPIC -shared -Wl,-z,defs}
-	esac
-	[[ $1 == -* ]] && shift
-	$(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
-	local ret=$?
-	rm -f "${base}"*
-	return ${ret}
-}
-
-
-# Parse information from CBUILD/CHOST/CTARGET rather than
-# use external variables from the profile.
-tc-ninja_magic_to_arch() {
-	_tc_echo_kernel_alias() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
-
-	local type=$1
-	local host=$2
-	[[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
-
-	case ${host} in
-		arm64*)		echo arm64;;
-		aarch64*)	echo arm64;;
-		alpha*)		echo alpha;;
-		arc*)		echo arc;;
-		arm*)		echo arm;;
-		avr*)		_tc_echo_kernel_alias avr32 avr;;
-		bfin*)		_tc_echo_kernel_alias blackfin bfin;;
-		c6x*)		echo c6x;;
-		cris*)		echo cris;;
-		frv*)		echo frv;;
-		hexagon*)	echo hexagon;;
-		hppa*)		_tc_echo_kernel_alias parisc hppa;;
-		i?86*)		echo x86;;
-		ia64*)		echo ia64;;
-		loongarch*)	_tc_echo_kernel_alias loongarch loong;;
-		m68*)		echo m68k;;
-		metag*)		echo metag;;
-		microblaze*)	echo microblaze;;
-		mips*)		echo mips;;
-		nios2*)		echo nios2;;
-		nios*)		echo nios;;
-		or1k*|or32*)	echo openrisc;;
-		powerpc*)
-			# Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
-			# have been unified into simply 'powerpc', but until 2.6.16,
-			# ppc32 is still using ARCH="ppc" as default
-			if [[ ${type} == "kern" ]] ; then
-				echo powerpc
-			elif [[ ${host} == powerpc64* ]] ; then
-				echo ppc64
-			else
-				echo ppc
-			fi
-			;;
-		riscv*)		echo riscv;;
-		s390*)		echo s390;;
-		score*)		echo score;;
-		sh64*)		_tc_echo_kernel_alias sh64 sh;;
-		sh*)		echo sh;;
-		sparcv9*)	echo sparc64;;
-		sparc64*)	_tc_echo_kernel_alias sparc64 sparc;;
-		sparc*)		[[ ${PROFILE_ARCH} == "sparc64" ]] \
-						&& _tc_echo_kernel_alias sparc64 sparc \
-						|| echo sparc
-					;;
-		tile*)		echo tile;;
-		vax*)		echo vax;;
-		x86_64*)
-			# Starting with linux-2.6.24, the 'x86_64' and 'i386'
-			# trees have been unified into 'x86'.
-			if [[ ${type} == "kern" ]] ; then
-				echo x86
-			else
-				echo amd64
-			fi
-			;;
-		xtensa*)	echo xtensa;;
-
-		# since our usage of tc-arch is largely concerned with
-		# normalizing inputs for testing ${CTARGET}, let's filter
-		# other cross targets (mingw and such) into the unknown.
-		*)		echo unknown;;
-	esac
-}
-# @FUNCTION: tc-arch-kernel
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the kernel arch according to the compiler target
-tc-arch-kernel() {
-	tc-ninja_magic_to_arch kern "$@"
-}
-# @FUNCTION: tc-arch
-# @USAGE: [toolchain prefix]
-# @RETURN: name of the portage arch according to the compiler target
-tc-arch() {
-	tc-ninja_magic_to_arch portage "$@"
-}
-
-# @FUNCTION: tc-endian
-# @USAGE: [toolchain prefix]
-# @RETURN: 'big' or 'little' corresponding to the passed (or host) endianness
-# @DESCRIPTION:
-# Accepts 'host' as an argument which defaults to CTARGET and falls back to CHOST
-# if unspecified.  Returns 'big' or 'little' depending on whether 'host' is
-# big or little endian.
-tc-endian() {
-	local host=$1
-	[[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
-	host=${host%%-*}
-
-	case ${host} in
-		aarch64*be)	echo big;;
-		aarch64)	echo little;;
-		alpha*)		echo little;;
-		arc*b*)		echo big;;
-		arc*)		echo little;;
-		arm*b*)		echo big;;
-		arm*)		echo little;;
-		cris*)		echo little;;
-		hppa*)		echo big;;
-		i?86*)		echo little;;
-		ia64*)		echo little;;
-		loongarch*)	echo little;;
-		m68*)		echo big;;
-		mips*l*)	echo little;;
-		mips*)		echo big;;
-		powerpc*le)	echo little;;
-		powerpc*)	echo big;;
-		riscv*)		echo little;;
-		s390*)		echo big;;
-		sh*b*)		echo big;;
-		sh*)		echo little;;
-		sparc*)		echo big;;
-		x86_64*)	echo little;;
-		*)		echo wtf;;
-	esac
-}
-
-# @FUNCTION: tc-get-compiler-type
-# @RETURN: keyword identifying the compiler: gcc, clang, pathcc, unknown
-tc-get-compiler-type() {
-	local code='
-#if defined(__PATHSCALE__)
-	HAVE_PATHCC
-#elif defined(__clang__)
-	HAVE_CLANG
-#elif defined(__GNUC__)
-	HAVE_GCC
-#endif
-'
-	local res=$($(tc-getCPP "$@") -E -P - <<<"${code}")
-
-	case ${res} in
-		*HAVE_PATHCC*)	echo pathcc;;
-		*HAVE_CLANG*)	echo clang;;
-		*HAVE_GCC*)	echo gcc;;
-		*)		echo unknown;;
-	esac
-}
-
-# @FUNCTION: tc-is-gcc
-# @RETURN: Shell true if the current compiler is GCC, false otherwise.
-tc-is-gcc() {
-	[[ $(tc-get-compiler-type) == gcc ]]
-}
-
-# @FUNCTION: tc-is-clang
-# @RETURN: Shell true if the current compiler is clang, false otherwise.
-tc-is-clang() {
-	[[ $(tc-get-compiler-type) == clang ]]
-}
-
-# Internal func.  The first argument is the version info to expand.
-# Query the preprocessor to improve compatibility across different
-# compilers rather than maintaining a --version flag matrix, bug #335943.
-_gcc_fullversion() {
-	local ver="$1"; shift
-	set -- $($(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__")
-	eval echo "${ver}"
-}
-
-# @FUNCTION: gcc-fullversion
-# @RETURN: compiler version (major.minor.micro: [3.4.6])
-gcc-fullversion() {
-	_gcc_fullversion '$1.$2.$3' "$@"
-}
-# @FUNCTION: gcc-version
-# @RETURN: compiler version (major.minor: [3.4].6)
-gcc-version() {
-	_gcc_fullversion '$1.$2' "$@"
-}
-# @FUNCTION: gcc-major-version
-# @RETURN: major compiler version (major: [3].4.6)
-gcc-major-version() {
-	_gcc_fullversion '$1' "$@"
-}
-# @FUNCTION: gcc-minor-version
-# @RETURN: minor compiler version (minor: 3.[4].6)
-gcc-minor-version() {
-	_gcc_fullversion '$2' "$@"
-}
-# @FUNCTION: gcc-micro-version
-# @RETURN: micro compiler version (micro: 3.4.[6])
-gcc-micro-version() {
-	_gcc_fullversion '$3' "$@"
-}
-
-# Internal func. Based on _gcc_fullversion() above.
-_clang_fullversion() {
-	local ver="$1"; shift
-	set -- $($(tc-getCPP "$@") -E -P - <<<"__clang_major__ __clang_minor__ __clang_patchlevel__")
-	eval echo "${ver}"
-}
-
-# @FUNCTION: clang-fullversion
-# @RETURN: compiler version (major.minor.micro: [3.4.6])
-clang-fullversion() {
-	_clang_fullversion '$1.$2.$3' "$@"
-}
-# @FUNCTION: clang-version
-# @RETURN: compiler version (major.minor: [3.4].6)
-clang-version() {
-	_clang_fullversion '$1.$2' "$@"
-}
-# @FUNCTION: clang-major-version
-# @RETURN: major compiler version (major: [3].4.6)
-clang-major-version() {
-	_clang_fullversion '$1' "$@"
-}
-# @FUNCTION: clang-minor-version
-# @RETURN: minor compiler version (minor: 3.[4].6)
-clang-minor-version() {
-	_clang_fullversion '$2' "$@"
-}
-# @FUNCTION: clang-micro-version
-# @RETURN: micro compiler version (micro: 3.4.[6])
-clang-micro-version() {
-	_clang_fullversion '$3' "$@"
-}
-
-# Returns the installation directory - internal toolchain
-# function for use by _gcc-specs-exists (for flag-o-matic).
-_gcc-install-dir() {
-	echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
-		awk '$1=="install:" {print $2}')"
-}
-# Returns true if the indicated specs file exists - internal toolchain
-# function for use by flag-o-matic.
-_gcc-specs-exists() {
-	[[ -f $(_gcc-install-dir)/$1 ]]
-}
-
-# Returns requested gcc specs directive unprocessed - for used by
-# gcc-specs-directive()
-# Note; later specs normally overwrite earlier ones; however if a later
-# spec starts with '+' then it appends.
-# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
-# as "Reading <file>", in order.  Strictly speaking, if there's a
-# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
-# the same token anything from 'gcc -dumpspecs' is overridden by
-# the contents of $(gcc_install_dir)/specs so the result is the
-# same either way.
-_gcc-specs-directive_raw() {
-	local cc=$(tc-getCC)
-	local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
-	${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
-'BEGIN	{ pspec=""; spec=""; outside=1 }
-$1=="*"directive":"  { pspec=spec; spec=""; outside=0; next }
-	outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
-	spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
-	{ spec=spec $0 }
-END	{ print spec }'
-	return 0
-}
-
-# Return the requested gcc specs directive, with all included
-# specs expanded.
-# Note, it does not check for inclusion loops, which cause it
-# to never finish - but such loops are invalid for gcc and we're
-# assuming gcc is operational.
-gcc-specs-directive() {
-	local directive subdname subdirective
-	directive="$(_gcc-specs-directive_raw $1)"
-	while [[ ${directive} == *%\(*\)* ]]; do
-		subdname=${directive/*%\(}
-		subdname=${subdname/\)*}
-		subdirective="$(_gcc-specs-directive_raw ${subdname})"
-		directive="${directive//\%(${subdname})/${subdirective}}"
-	done
-	echo "${directive}"
-	return 0
-}
-
-# Returns true if gcc sets relro
-gcc-specs-relro() {
-	local directive
-	directive=$(gcc-specs-directive link_command)
-	[[ "${directive/\{!norelro:}" != "${directive}" ]]
-}
-# Returns true if gcc sets now
-gcc-specs-now() {
-	local directive
-	directive=$(gcc-specs-directive link_command)
-	[[ "${directive/\{!nonow:}" != "${directive}" ]]
-}
-# Returns true if gcc builds PIEs
-gcc-specs-pie() {
-	local directive
-	directive=$(gcc-specs-directive cc1)
-	[[ "${directive/\{!nopie:}" != "${directive}" ]]
-}
-# Returns true if gcc builds with the stack protector
-gcc-specs-ssp() {
-	local directive
-	directive=$(gcc-specs-directive cc1)
-	[[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]]
-}
-# Returns true if gcc upgrades fstack-protector to fstack-protector-all
-gcc-specs-ssp-to-all() {
-	local directive
-	directive=$(gcc-specs-directive cc1)
-	[[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]]
-}
-# Returns true if gcc builds with fno-strict-overflow
-gcc-specs-nostrict() {
-	local directive
-	directive=$(gcc-specs-directive cc1)
-	[[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]
-}
-# Returns true if gcc builds with fstack-check
-gcc-specs-stack-check() {
-	local directive
-	directive=$(gcc-specs-directive cc1)
-	[[ "${directive/\{!fno-stack-check:}" != "${directive}" ]]
-}
-
-# @FUNCTION: tc-enables-cxx-assertions
-# @RETURN: Truth if the current compiler enables assertions in the C++ standard library
-# @DESCRIPTION:
-# Return truth if the current compiler enables assertions in the C++ standard
-# library. For libstdc++, this is -D_GLIBCXX_ASSERTIONS, and for libcxx/libc++,
-# this is -D_LIBCPP_ENABLE_ASSERTIONS (deprecated) or -D_LIBCPP_ENABLE_HARDENED_MODE.
-tc-enables-cxx-assertions() {
-	tc-cpp-is-true "defined(_GLIBCXX_ASSERTIONS) || defined(_LIBCPP_ENABLE_ASSERTIONS) || defined(_LIBCPP_ENABLE_HARDENED_MODE)" ${CPPFLAGS} ${CXXFLAGS}
-}
-
-# @FUNCTION: tc-enables-pie
-# @RETURN: Truth if the current compiler generates position-independent code (PIC) which can be linked into executables
-# @DESCRIPTION:
-# Return truth if the current compiler generates position-independent code (PIC)
-# which can be linked into executables.
-tc-enables-pie() {
-	tc-cpp-is-true "defined(__PIE__)" ${CPPFLAGS} ${CFLAGS} ${CXXFLAGS}
-}
-
-# @FUNCTION: tc-enables-fortify-source
-# @RETURN: Truth if the current compiler enables FORTIFY_SOURCE at any level
-# @DESCRIPTION:
-# Return truth if the current compiler enables fortification (FORTIFY_SOURCE)
-# at any level (-D_FORTIFY_SOURCE).
-tc-enables-fortify-source() {
-	tc-cpp-is-true "defined(_FORTIFY_SOURCE)" ${CPPFLAGS} ${CFLAGS} ${CXXFLAGS}
-}
-
-# @FUNCTION: tc-enables-ssp
-# @RETURN: Truth if the current compiler enables stack smashing protection (SSP) on at least minimal level
-# @DESCRIPTION:
-# Return truth if the current compiler enables stack smashing protection (SSP)
-# on level corresponding to any of the following options:
-#  -fstack-protector
-#  -fstack-protector-strong
-#  -fstack-protector-all
-tc-enables-ssp() {
-	tc-cpp-is-true "defined(__SSP__) || defined(__SSP_STRONG__) || defined(__SSP_ALL__)" ${CPPFLAGS} ${CFLAGS} ${CXXFLAGS}
-}
-
-# @FUNCTION: tc-enables-ssp-strong
-# @RETURN: Truth if the current compiler enables stack smashing protection (SSP) on at least middle level
-# @DESCRIPTION:
-# Return truth if the current compiler enables stack smashing protection (SSP)
-# on level corresponding to any of the following options:
-#  -fstack-protector-strong
-#  -fstack-protector-all
-tc-enables-ssp-strong() {
-	tc-cpp-is-true "defined(__SSP_STRONG__) || defined(__SSP_ALL__)" ${CPPFLAGS} ${CFLAGS} ${CXXFLAGS}
-}
-
-# @FUNCTION: tc-enables-ssp-all
-# @RETURN: Truth if the current compiler enables stack smashing protection (SSP) on maximal level
-# @DESCRIPTION:
-# Return truth if the current compiler enables stack smashing protection (SSP)
-# on level corresponding to any of the following options:
-#  -fstack-protector-all
-tc-enables-ssp-all() {
-	tc-cpp-is-true "defined(__SSP_ALL__)" ${CPPFLAGS} ${CFLAGS} ${CXXFLAGS}
-}
-
-
-# @FUNCTION: gen_usr_ldscript
-# @USAGE: [-a] <list of libs to create linker scripts for>
-# @DESCRIPTION:
-# This function is deprecated. Use the version from
-# usr-ldscript.eclass instead.
-gen_usr_ldscript() {
-	ewarn "${FUNCNAME}: Please migrate to usr-ldscript.eclass"
-
-	local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
-	[[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
-
-	tc-is-static-only && return
-	use prefix && return
-
-	# We only care about stuffing / for the native ABI, bug #479448
-	if [[ $(type -t multilib_is_native_abi) == "function" ]] ; then
-		multilib_is_native_abi || return 0
-	fi
-
-	# Eventually we'd like to get rid of this func completely, bug #417451
-	case ${CTARGET:-${CHOST}} in
-		*-darwin*) ;;
-		*-android*) return 0 ;;
-		*linux*) use prefix && return 0 ;;
-		*) return 0 ;;
-	esac
-
-	# Just make sure it exists
-	dodir /usr/${libdir}
-
-	if [[ $1 == "-a" ]] ; then
-		auto=true
-		shift
-		dodir /${libdir}
-	fi
-
-	# OUTPUT_FORMAT gives hints to the linker as to what binary format
-	# is referenced ... makes multilib saner
-	local flags=( ${CFLAGS} ${LDFLAGS} -Wl,--verbose )
-	if $(tc-getLD) --version | grep -q 'GNU gold' ; then
-		# If they're using gold, manually invoke the old bfd, bug #487696
-		local d="${T}/bfd-linker"
-		mkdir -p "${d}"
-		ln -sf $(type -P ${CHOST}-ld.bfd) "${d}"/ld
-		flags+=( -B"${d}" )
-	fi
-	output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
-	[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
-
-	for lib in "$@" ; do
-		local tlib
-		if ${auto} ; then
-			lib="lib${lib}${suffix}"
-		else
-			# Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
-			# This especially is for AIX where $(get_libname) can return ".a",
-			# so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
-			[[ -r ${ED}/${libdir}/${lib} ]] || continue
-			#TODO: better die here?
-		fi
-
-		case ${CTARGET:-${CHOST}} in
-		*-darwin*)
-			if ${auto} ; then
-				tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
-			else
-				tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
-			fi
-			[[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
-			tlib=${tlib##*/}
-
-			if ${auto} ; then
-				mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
-				# some install_names are funky: they encode a version
-				if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
-					mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
-				fi
-				rm -f "${ED}"/${libdir}/${lib}
-			fi
-
-			# Mach-O files have an id, which is like a soname, it tells how
-			# another object linking against this lib should reference it.
-			# Since we moved the lib from usr/lib into lib this reference is
-			# wrong.  Hence, we update it here.  We don't configure with
-			# libdir=/lib because that messes up libtool files.
-			# Make sure we don't lose the specific version, so just modify the
-			# existing install_name
-			if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
-				chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
-				local nowrite=yes
-			fi
-			install_name_tool \
-				-id "${EPREFIX}"/${libdir}/${tlib} \
-				"${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
-			[[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
-			# Now as we don't use GNU binutils and our linker doesn't
-			# understand linker scripts, just create a symlink.
-			pushd "${ED}/usr/${libdir}" > /dev/null
-			ln -snf "../../${libdir}/${tlib}" "${lib}"
-			popd > /dev/null
-			;;
-		*)
-			if ${auto} ; then
-				tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
-				[[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
-				mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
-				# some SONAMEs are funky: they encode a version before the .so
-				if [[ ${tlib} != ${lib}* ]] ; then
-					mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
-				fi
-				rm -f "${ED}"/${libdir}/${lib}
-			else
-				tlib=${lib}
-			fi
-			cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
-			/* GNU ld script
-			   Since Gentoo has critical dynamic libraries in /lib, and the static versions
-			   in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
-			   run into linking problems.  This "fake" dynamic lib is a linker script that
-			   redirects the linker to the real lib.  And yes, this works in the cross-
-			   compiling scenario as the sysroot-ed linker will prepend the real path.
-
-			   See bug https://bugs.gentoo.org/4411 for more info.
-			 */
-			${output_format}
-			GROUP ( ${EPREFIX}/${libdir}/${tlib} )
-			END_LDSCRIPT
-			;;
-		esac
-		fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
-	done
-}
-
-# @FUNCTION: tc-get-cxx-stdlib
-# @DESCRIPTION:
-# Attempt to identify the C++ standard library used by the compiler.
-# If the library is identified, the function returns 0 and prints one
-# of the following:
-#
-# - ``libc++`` for ``sys-libs/libcxx``
-# - ``libstdc++`` for ``sys-devel/gcc``'s libstdc++
-#
-# If the library is not recognized, the function returns 1.
-tc-get-cxx-stdlib() {
-	local code='#include <ciso646>
-
-#if defined(_LIBCPP_VERSION)
-	HAVE_LIBCXX
-#elif defined(__GLIBCXX__)
-	HAVE_LIBSTDCPP
-#endif
-'
-	local res=$(
-		$(tc-getCXX) ${CPPFLAGS} ${CXXFLAGS} -x c++ -E -P - \
-			<<<"${code}" 2>/dev/null
-	)
-
-	case ${res} in
-		*HAVE_LIBCXX*)
-			echo libc++;;
-		*HAVE_LIBSTDCPP*)
-			echo libstdc++;;
-		*)
-			return 1;;
-	esac
-
-	return 0
-}
-
-# @FUNCTION: tc-get-c-rtlib
-# @DESCRIPTION:
-# Attempt to identify the runtime used by the C/C++ compiler.
-# If the runtime is identifed, the function returns 0 and prints one
-# of the following:
-#
-# - ``compiler-rt`` for ``sys-libs/compiler-rt``
-# - ``libgcc`` for ``sys-devel/gcc``'s libgcc
-#
-# If the runtime is not recognized, the function returns 1.
-tc-get-c-rtlib() {
-	local res=$(
-		$(tc-getCC) ${CPPFLAGS} ${CFLAGS} ${LDFLAGS} \
-			-print-libgcc-file-name 2>/dev/null
-	)
-
-	case ${res} in
-		*libclang_rt*)
-			echo compiler-rt;;
-		*libgcc*)
-			echo libgcc;;
-		*)
-			return 1;;
-	esac
-
-	return 0
-}
-
-# @FUNCTION: tc-get-ptr-size
-# @RETURN: Size of a pointer in bytes for CHOST (e.g. 4 or 8).
-tc-get-ptr-size() {
-	$(tc-getCPP) -P - <<< __SIZEOF_POINTER__ ||
-		die "Could not determine CHOST pointer size"
-}
-
-# @FUNCTION: tc-get-build-ptr-size
-# @RETURN: Size of a pointer in bytes for CBUILD (e.g. 4 or 8).
-tc-get-build-ptr-size() {
-	$(tc-getBUILD_CPP) -P - <<< __SIZEOF_POINTER__ ||
-		die "Could not determine CBUILD pointer size"
-}
-
-# @FUNCTION: tc-is-lto
-# @RETURN: Shell true if we are using LTO, shell false otherwise
-tc-is-lto() {
-	local f="${T}/test-lto.o"
-	local ret=1
-
-	case $(tc-get-compiler-type) in
-		clang)
-			$(tc-getCC) ${CFLAGS} -c -o "${f}" -x c - <<<"" || die
-			# If LTO is used, clang will output bytecode and llvm-bcanalyzer
-			# will run successfully.  Otherwise, it will output plain object
-			# file and llvm-bcanalyzer will exit with error.
-			llvm-bcanalyzer "${f}" &>/dev/null && ret=0
-			;;
-		gcc)
-			$(tc-getCC) ${CFLAGS} -c -o "${f}" -x c - <<<"" || die
-			[[ $($(tc-getREADELF) -S "${f}") == *.gnu.lto* ]] && ret=0
-			;;
-	esac
-	rm -f "${f}" || die
-	return "${ret}"
-}
-
-# @FUNCTION: tc-has-64bit-time_t
-# @RETURN: Shell true if time_t is at least 64 bits long, false otherwise
-tc-has-64bit-time_t() {
-	$(tc-getCC) ${CFLAGS} ${CPPFLAGS} -c -x c - -o /dev/null <<-EOF &>/dev/null
-		#include <sys/types.h>
-		int test[sizeof(time_t) >= 8 ? 1 : -1];
-	EOF
-	return $?
-}
-
-fi