* [gentoo-embedded] Crossdev and arm-none-eabi and armv7m-none-eabi toolchain builds.
@ 2012-11-02 4:19 "Pablo Pölcher"
2012-11-02 12:13 ` Markos Chandras
2012-11-02 21:46 ` Mike Frysinger
0 siblings, 2 replies; 4+ messages in thread
From: "Pablo Pölcher" @ 2012-11-02 4:19 UTC (permalink / raw
To: gentoo-embedded
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Hello,
this is my first post in this list, so please forgive any mistakes I may be doing here.
I have been recently trying to compile a toolchain for the NXP LPC17xx
microcontroller series using crossdev and came across a series of
problems, which I have solved to a certain extent and wanted to share them in case somebody is interested.
The CHOST I was trying to (and could finally) build for is «armv7m-none-eabi» (by running crossdev -t armv7m-none-eabi -s4 --ex-gdb). The main problem I encountered is that I couldn't get a stage1 gcc built. The build log would always end with the error message:
«configure: error: cannot compute suffix of object files: cannot compile»
After poking among the different log files, I found out that the problem
was that the compiler was being asked to generate ARM code for a Thumb-only microcontroller, to what gcc would simply exit with the error code:
«Error: Target CPU does not support ARM mode»
So I traced back the generation of the argument list for the configure script back to toolchain.eclass, wrote a little patch and bingo! I could get past the annoying error. I just checked for the architecture to be armv7-m and added the --with-mode=thumb switch. There's an additional case to consider, and that is the armv6m architectures, but since I haven't tried them, yet, I haven't tested it nor included them in my patch.
Anyway, once I got through this first problem, I had trouble again while compiling the stage3 gcc. Poking around a bit more, I found out that if the openmp USE flag is set, the gcc ebuild will try to build libgomp, even if no support for pthreads is present (as is the case with my newlib-based toolchain), so I could get around by disabling openmp during crossdev execution, but I guess this could also go as a toolchain.eclass patch.
One more thing is that I couldn't see any place where the use of the multilib USE flag is recommended when compiling newlib, but still I found
it useful.
And one last thing I noticed (but couldn't get to solve, yet) is that I could never get crossdev to generate thumb code when compiling newlib for the «arm-none-eabi» CHOST, even if I pass the multilib USE flag. I tried tweaking several things, but I guess I should take a longer while to trace
the error (feature?) and fix it. The crt0.o in /usr/arm-none-eabi/lib/thumb/ looks like this:
00000000 <_mainCRTStartup>:
0: e3b00016 movs r0, #22
4: e28f10e8 add r1, pc, #232 ; 0xe8
8: ef123456 svc 0x00123456
c: e59f00e0 ldr r0, [pc, #224] ; f4 <change_back+0x4>
10: e5901000 ldr r1, [r0]
14: e3510000 cmp r1, #0
...
As you can see, it's ARM code. The armv7m-none-eabi version of crt0.o in
the thumb directory looks like:
00000000 <_mainCRTStartup>:
0: 2016 movs r0, #22
2: a12d add r1, pc, #180 ; (adr r1, b8 <_mainCRTStartup+0xb8>)
4: beab bkpt 0x00ab
6: 482c ldr r0, [pc, #176] ; (b8 <_mainCRTStartup+0xb8>)
8: 6801 ldr r1, [r0, #0]
a: 2900 cmp r1, #0
Nice Thumb code. I found out this while pulling my hair off trying to find out why my nicely compiled code would throw a double hardfault on an LPC1765. I was using the arm-none-eabi toolchain, then. Once I switched to
the armv7m one, everything was solved.
Anyway, I hope this helps somebody somehow, and I'm sorry if you already
knew about all this.
Best regards,
Pablo Pölcher
[-- Attachment #2: toolchain.eclass.orig --]
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# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain.eclass,v 1.552 2012/10/01 05:03:17 vapier Exp $
#
# Maintainer: Toolchain Ninjas <toolchain@gentoo.org>
#---->> eclass stuff <<----
HOMEPAGE="http://gcc.gnu.org/"
LICENSE="GPL-2 LGPL-2.1"
RESTRICT="strip" # cross-compilers need controlled stripping
inherit eutils versionator libtool toolchain-funcs flag-o-matic gnuconfig multilib fixheadtails pax-utils
if [[ ${PV} == *_pre9999* ]] ; then
EGIT_REPO_URI="git://gcc.gnu.org/git/gcc.git"
# naming style:
# gcc-4.7.1_pre9999 -> gcc-4_7-branch
# Note that the micro version is required or lots of stuff will break.
# To checkout master set gcc_LIVE_BRANCH="master" in the ebuild before
# inheriting this eclass.
EGIT_BRANCH="${PN}-${PV%.?_pre9999}-branch"
EGIT_BRANCH=${EGIT_BRANCH//./_}
inherit git-2
fi
EXPORT_FUNCTIONS pkg_setup src_unpack src_compile src_test src_install pkg_postinst pkg_postrm
DESCRIPTION="The GNU Compiler Collection"
FEATURES=${FEATURES/multilib-strict/}
#----<< eclass stuff >>----
#---->> globals <<----
export CTARGET=${CTARGET:-${CHOST}}
if [[ ${CTARGET} = ${CHOST} ]] ; then
if [[ ${CATEGORY/cross-} != ${CATEGORY} ]] ; then
export CTARGET=${CATEGORY/cross-}
fi
fi
: ${TARGET_ABI:=${ABI}}
: ${TARGET_MULTILIB_ABIS:=${MULTILIB_ABIS}}
: ${TARGET_DEFAULT_ABI:=${DEFAULT_ABI}}
is_crosscompile() {
[[ ${CHOST} != ${CTARGET} ]]
}
tc_version_is_at_least() { version_is_at_least "$1" "${2:-${GCC_RELEASE_VER}}" ; }
GCC_PV=${TOOLCHAIN_GCC_PV:-${PV}}
GCC_PVR=${GCC_PV}
[[ ${PR} != "r0" ]] && GCC_PVR=${GCC_PVR}-${PR}
GCC_RELEASE_VER=$(get_version_component_range 1-3 ${GCC_PV})
GCC_BRANCH_VER=$(get_version_component_range 1-2 ${GCC_PV})
GCCMAJOR=$(get_version_component_range 1 ${GCC_PV})
GCCMINOR=$(get_version_component_range 2 ${GCC_PV})
GCCMICRO=$(get_version_component_range 3 ${GCC_PV})
[[ ${BRANCH_UPDATE-notset} == "notset" ]] && BRANCH_UPDATE=$(get_version_component_range 4 ${GCC_PV})
# According to gcc/c-cppbuiltin.c, GCC_CONFIG_VER MUST match this regex.
# ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)?
GCC_CONFIG_VER=${GCC_CONFIG_VER:-$(replace_version_separator 3 '-' ${GCC_PV})}
# Pre-release support
if [[ ${GCC_PV} != ${GCC_PV/_pre/-} ]] ; then
PRERELEASE=${GCC_PV/_pre/-}
fi
# make _alpha and _beta ebuilds automatically use a snapshot
if [[ ${GCC_PV} == *_alpha* ]] ; then
SNAPSHOT=${GCC_BRANCH_VER}-${GCC_PV##*_alpha}
elif [[ ${GCC_PV} == *_beta* ]] ; then
SNAPSHOT=${GCC_BRANCH_VER}-${GCC_PV##*_beta}
elif [[ ${GCC_PV} == *_rc* ]] ; then
SNAPSHOT=${GCC_PV%_rc*}-RC-${GCC_PV##*_rc}
fi
export GCC_FILESDIR=${GCC_FILESDIR:-${FILESDIR}}
PREFIX=${TOOLCHAIN_PREFIX:-/usr}
if tc_version_is_at_least 3.4.0 ; then
LIBPATH=${TOOLCHAIN_LIBPATH:-${PREFIX}/lib/gcc/${CTARGET}/${GCC_CONFIG_VER}}
else
LIBPATH=${TOOLCHAIN_LIBPATH:-${PREFIX}/lib/gcc-lib/${CTARGET}/${GCC_CONFIG_VER}}
fi
INCLUDEPATH=${TOOLCHAIN_INCLUDEPATH:-${LIBPATH}/include}
if is_crosscompile ; then
BINPATH=${TOOLCHAIN_BINPATH:-${PREFIX}/${CHOST}/${CTARGET}/gcc-bin/${GCC_CONFIG_VER}}
else
BINPATH=${TOOLCHAIN_BINPATH:-${PREFIX}/${CTARGET}/gcc-bin/${GCC_CONFIG_VER}}
fi
DATAPATH=${TOOLCHAIN_DATAPATH:-${PREFIX}/share/gcc-data/${CTARGET}/${GCC_CONFIG_VER}}
# Dont install in /usr/include/g++-v3/, but in gcc internal directory.
# We will handle /usr/include/g++-v3/ with gcc-config ...
STDCXX_INCDIR=${TOOLCHAIN_STDCXX_INCDIR:-${LIBPATH}/include/g++-v${GCC_BRANCH_VER/\.*/}}
#----<< globals >>----
#---->> SLOT+IUSE logic <<----
IUSE="build multislot nls nptl test vanilla"
if [[ ${PN} != "kgcc64" && ${PN} != gcc-* ]] ; then
IUSE+=" altivec cxx fortran nocxx"
[[ -n ${PIE_VER} ]] && IUSE+=" nopie"
[[ -n ${HTB_VER} ]] && IUSE+=" boundschecking"
[[ -n ${D_VER} ]] && IUSE+=" d"
[[ -n ${SPECS_VER} ]] && IUSE+=" nossp"
if tc_version_is_at_least 3 ; then
IUSE+=" bootstrap doc gcj gtk hardened multilib objc"
tc_version_is_at_least "4.0" && IUSE+=" objc-gc mudflap"
tc_version_is_at_least "4.1" && IUSE+=" libssp objc++"
tc_version_is_at_least "4.2" && IUSE+=" openmp"
tc_version_is_at_least "4.3" && IUSE+=" fixed-point"
tc_version_is_at_least "4.4" && IUSE+=" graphite"
[[ ${GCC_BRANCH_VER} == 4.5 ]] && IUSE+=" lto"
tc_version_is_at_least "4.6" && IUSE+=" go"
fi
fi
# Support upgrade paths here or people get pissed
if use multislot ; then
SLOT="${GCC_CONFIG_VER}"
else
SLOT="${GCC_BRANCH_VER}"
fi
#----<< SLOT+IUSE logic >>----
#---->> DEPEND <<----
RDEPEND="sys-libs/zlib
!build? (
nls? ( sys-devel/gettext )
)"
if tc_version_is_at_least 3 ; then
RDEPEND+=" virtual/libiconv"
fi
if tc_version_is_at_least 4 ; then
GMP_MPFR_DEPS=">=dev-libs/gmp-4.3.2 >=dev-libs/mpfr-2.4.2"
if tc_version_is_at_least 4.3 ; then
RDEPEND+=" ${GMP_MPFR_DEPS}"
elif in_iuse fortran ; then
RDEPEND+=" fortran? ( ${GMP_MPFR_DEPS} )"
fi
if tc_version_is_at_least 4.5 ; then
RDEPEND+=" >=dev-libs/mpc-0.8.1"
fi
in_iuse lto && RDEPEND+=" lto? ( || ( >=dev-libs/elfutils-0.143 dev-libs/libelf ) )"
fi
if in_iuse graphite ; then
RDEPEND+="
graphite? (
>=dev-libs/cloog-ppl-0.15.10
>=dev-libs/ppl-0.11
)"
fi
DEPEND="${RDEPEND}
>=sys-apps/texinfo-4.8
>=sys-devel/bison-1.875
>=sys-devel/flex-2.5.4
test? (
>=dev-util/dejagnu-1.4.4
>=sys-devel/autogen-5.5.4
)"
if in_iuse gcj ; then
GCJ_GTK_DEPS="
x11-libs/libXt
x11-libs/libX11
x11-libs/libXtst
x11-proto/xproto
x11-proto/xextproto
=x11-libs/gtk+-2*
virtual/pkgconfig
"
tc_version_is_at_least 3.4 && GCJ_GTK_DEPS+=" x11-libs/pango"
GCJ_DEPS=">=media-libs/libart_lgpl-2.1"
tc_version_is_at_least 4.2 && GCJ_DEPS+=" app-arch/zip app-arch/unzip"
DEPEND+=" gcj? ( gtk? ( ${GCJ_GTK_DEPS} ) ${GCJ_DEPS} )"
fi
PDEPEND=">=sys-devel/gcc-config-1.5"
#----<< DEPEND >>----
#---->> S + SRC_URI essentials <<----
# Set the source directory depending on whether we're using
# a prerelease, snapshot, or release tarball.
S=$(
if [[ -n ${PRERELEASE} ]] ; then
echo ${WORKDIR}/gcc-${PRERELEASE}
elif [[ -n ${SNAPSHOT} ]] ; then
echo ${WORKDIR}/gcc-${SNAPSHOT}
else
echo ${WORKDIR}/gcc-${GCC_RELEASE_VER}
fi
)
# This function handles the basics of setting the SRC_URI for a gcc ebuild.
# To use, set SRC_URI with:
#
# SRC_URI="$(get_gcc_src_uri)"
#
# Other than the variables normally set by portage, this function's behavior
# can be altered by setting the following:
#
# SNAPSHOT
# If set, this variable signals that we should be using a snapshot
# of gcc from ftp://sources.redhat.com/pub/gcc/snapshots/. It is
# expected to be in the format "YYYY-MM-DD". Note that if the ebuild
# has a _pre suffix, this variable is ignored and the prerelease
# tarball is used instead.
#
# BRANCH_UPDATE
# If set, this variable signals that we should be using the main
# release tarball (determined by ebuild version) and applying a
# CVS branch update patch against it. The location of this branch
# update patch is assumed to be in ${GENTOO_TOOLCHAIN_BASE_URI}.
# Just like with SNAPSHOT, this variable is ignored if the ebuild
# has a _pre suffix.
#
# PATCH_VER
# PATCH_GCC_VER
# This should be set to the version of the gentoo patch tarball.
# The resulting filename of this tarball will be:
# gcc-${PATCH_GCC_VER:-${GCC_RELEASE_VER}}-patches-${PATCH_VER}.tar.bz2
#
# PIE_VER
# PIE_GCC_VER
# These variables control patching in various updates for the logic
# controlling Position Independant Executables. PIE_VER is expected
# to be the version of this patch, and PIE_GCC_VER the gcc version of
# the patch:
# An example:
# PIE_VER="8.7.6.5"
# PIE_GCC_VER="3.4.0"
# The resulting filename of this tarball will be:
# gcc-${PIE_GCC_VER:-${GCC_RELEASE_VER}}-piepatches-v${PIE_VER}.tar.bz2
#
# SPECS_VER
# SPECS_GCC_VER
# This is for the minispecs files included in the hardened gcc-4.x
# The specs files for hardenedno*, vanilla and for building the "specs" file.
# SPECS_VER is expected to be the version of this patch, SPECS_GCC_VER
# the gcc version of the patch.
# An example:
# SPECS_VER="8.7.6.5"
# SPECS_GCC_VER="3.4.0"
# The resulting filename of this tarball will be:
# gcc-${SPECS_GCC_VER:-${GCC_RELEASE_VER}}-specs-${SPECS_VER}.tar.bz2
#
# HTB_VER
# HTB_GCC_VER
# These variables control whether or not an ebuild supports Herman
# ten Brugge's bounds-checking patches. If you want to use a patch
# for an older gcc version with a new gcc, make sure you set
# HTB_GCC_VER to that version of gcc.
#
gentoo_urls() {
local devspace="HTTP~vapier/dist/URI HTTP~dirtyepic/dist/URI
HTTP~halcy0n/patches/URI HTTP~zorry/patches/gcc/URI"
devspace=${devspace//HTTP/http:\/\/dev.gentoo.org\/}
echo mirror://gentoo/$1 ${devspace//URI/$1}
}
get_gcc_src_uri() {
export PATCH_GCC_VER=${PATCH_GCC_VER:-${GCC_RELEASE_VER}}
export UCLIBC_GCC_VER=${UCLIBC_GCC_VER:-${PATCH_GCC_VER}}
export PIE_GCC_VER=${PIE_GCC_VER:-${GCC_RELEASE_VER}}
export HTB_GCC_VER=${HTB_GCC_VER:-${GCC_RELEASE_VER}}
export SPECS_GCC_VER=${SPECS_GCC_VER:-${GCC_RELEASE_VER}}
# Set where to download gcc itself depending on whether we're using a
# prerelease, snapshot, or release tarball.
if [[ -n ${PRERELEASE} ]] ; then
GCC_SRC_URI="ftp://gcc.gnu.org/pub/gcc/prerelease-${PRERELEASE}/gcc-${PRERELEASE}.tar.bz2"
elif [[ -n ${SNAPSHOT} ]] ; then
GCC_SRC_URI="ftp://sources.redhat.com/pub/gcc/snapshots/${SNAPSHOT}/gcc-${SNAPSHOT}.tar.bz2"
elif [[ ${PV} != *9999* ]] ; then
GCC_SRC_URI="mirror://gnu/gcc/gcc-${GCC_PV}/gcc-${GCC_RELEASE_VER}.tar.bz2"
# we want all branch updates to be against the main release
[[ -n ${BRANCH_UPDATE} ]] && \
GCC_SRC_URI+=" $(gentoo_urls gcc-${GCC_RELEASE_VER}-branch-update-${BRANCH_UPDATE}.patch.bz2)"
fi
[[ -n ${UCLIBC_VER} ]] && GCC_SRC_URI+=" $(gentoo_urls gcc-${UCLIBC_GCC_VER}-uclibc-patches-${UCLIBC_VER}.tar.bz2)"
[[ -n ${PATCH_VER} ]] && GCC_SRC_URI+=" $(gentoo_urls gcc-${PATCH_GCC_VER}-patches-${PATCH_VER}.tar.bz2)"
# strawberry pie, Cappuccino and a Gauloises (it's a good thing)
[[ -n ${PIE_VER} ]] && \
PIE_CORE=${PIE_CORE:-gcc-${PIE_GCC_VER}-piepatches-v${PIE_VER}.tar.bz2} && \
GCC_SRC_URI+=" $(gentoo_urls ${PIE_CORE})"
# gcc minispec for the hardened gcc 4 compiler
[[ -n ${SPECS_VER} ]] && GCC_SRC_URI+=" $(gentoo_urls gcc-${SPECS_GCC_VER}-specs-${SPECS_VER}.tar.bz2)"
# gcc bounds checking patch
if [[ -n ${HTB_VER} ]] ; then
local HTBFILE="bounds-checking-gcc-${HTB_GCC_VER}-${HTB_VER}.patch.bz2"
GCC_SRC_URI+="
boundschecking? (
mirror://sourceforge/boundschecking/${HTBFILE}
$(gentoo_urls ${HTBFILE})
)"
fi
[[ -n ${D_VER} ]] && GCC_SRC_URI+=" d? ( mirror://sourceforge/dgcc/gdc-${D_VER}-src.tar.bz2 )"
# >= gcc-4.3 uses ecj.jar and we only add gcj as a use flag under certain
# conditions
if [[ ${PN} != "kgcc64" && ${PN} != gcc-* ]] ; then
if tc_version_is_at_least "4.5" ; then
GCC_SRC_URI+=" gcj? ( ftp://sourceware.org/pub/java/ecj-4.5.jar )"
elif tc_version_is_at_least "4.3" ; then
GCC_SRC_URI+=" gcj? ( ftp://sourceware.org/pub/java/ecj-4.3.jar )"
fi
fi
echo "${GCC_SRC_URI}"
}
SRC_URI=$(get_gcc_src_uri)
#---->> S + SRC_URI essentials >>----
#---->> support checks <<----
# Grab a variable from the build system (taken from linux-info.eclass)
get_make_var() {
local var=$1 makefile=${2:-${WORKDIR}/build/Makefile}
echo -e "e:\\n\\t@echo \$(${var})\\ninclude ${makefile}" | \
r=${makefile%/*} emake --no-print-directory -s -f - 2>/dev/null
}
XGCC() { get_make_var GCC_FOR_TARGET ; }
# The gentoo piessp patches allow for 3 configurations:
# 1) PIE+SSP by default
# 2) PIE by default
# 3) SSP by default
hardened_gcc_works() {
if [[ $1 == "pie" ]] ; then
# $gcc_cv_ld_pie is unreliable as it simply take the output of
# `ld --help | grep -- -pie`, that reports the option in all cases, also if
# the loader doesn't actually load the resulting executables.
# To avoid breakage, blacklist FreeBSD here at least
[[ ${CTARGET} == *-freebsd* ]] && return 1
want_pie || return 1
use_if_iuse nopie && return 1
hardened_gcc_is_stable pie
return $?
elif [[ $1 == "ssp" ]] ; then
[[ -n ${SPECS_VER} ]] || return 1
use_if_iuse nossp && return 1
hardened_gcc_is_stable ssp
return $?
else
# laziness ;)
hardened_gcc_works pie || return 1
hardened_gcc_works ssp || return 1
return 0
fi
}
hardened_gcc_is_stable() {
local tocheck
if [[ $1 == "pie" ]] ; then
if [[ ${CTARGET} == *-uclibc* ]] ; then
tocheck=${PIE_UCLIBC_STABLE}
else
tocheck=${PIE_GLIBC_STABLE}
fi
elif [[ $1 == "ssp" ]] ; then
if [[ ${CTARGET} == *-uclibc* ]] ; then
tocheck=${SSP_UCLIBC_STABLE}
else
tocheck=${SSP_STABLE}
fi
else
die "hardened_gcc_stable needs to be called with pie or ssp"
fi
has $(tc-arch) ${tocheck} && return 0
return 1
}
want_pie() {
! use hardened && [[ -n ${PIE_VER} ]] && use nopie && return 1
[[ -n ${PIE_VER} ]] && [[ -n ${SPECS_VER} ]] && return 0
tc_version_is_at_least 4.3.2 && return 1
[[ -z ${PIE_VER} ]] && return 1
use !nopie && return 0
return 1
}
want_minispecs() {
if tc_version_is_at_least 4.3.2 && use hardened ; then
if ! want_pie ; then
ewarn "PIE_VER or SPECS_VER is not defiend in the GCC ebuild."
elif use vanilla ; then
ewarn "You will not get hardened features if you have the vanilla USE-flag."
elif use nopie && use nossp ; then
ewarn "You will not get hardened features if you have the nopie and nossp USE-flag."
elif ! hardened_gcc_works ; then
ewarn "Your $(tc-arch) arch is not supported."
else
return 0
fi
ewarn "Hope you know what you are doing. Hardened will not work."
return 0
fi
return 1
}
# This is to make sure we don't accidentally try to enable support for a
# language that doesnt exist. GCC 3.4 supports f77, while 4.0 supports f95, etc.
#
# Also add a hook so special ebuilds (kgcc64) can control which languages
# exactly get enabled
gcc-lang-supported() {
grep ^language=\"${1}\" "${S}"/gcc/*/config-lang.in > /dev/null || return 1
[[ -z ${TOOLCHAIN_ALLOWED_LANGS} ]] && return 0
has $1 ${TOOLCHAIN_ALLOWED_LANGS}
}
#----<< support checks >>----
#---->> specs + env.d logic <<----
# configure to build with the hardened GCC specs as the default
make_gcc_hard() {
# defaults to enable for all hardened toolchains
local gcc_hard_flags="-DEFAULT_RELRO -DEFAULT_BIND_NOW"
if hardened_gcc_works ; then
einfo "Updating gcc to use automatic PIE + SSP building ..."
gcc_hard_flags+=" -DEFAULT_PIE_SSP"
elif hardened_gcc_works pie ; then
einfo "Updating gcc to use automatic PIE building ..."
ewarn "SSP has not been enabled by default"
gcc_hard_flags+=" -DEFAULT_PIE"
elif hardened_gcc_works ssp ; then
einfo "Updating gcc to use automatic SSP building ..."
ewarn "PIE has not been enabled by default"
gcc_hard_flags+=" -DEFAULT_SSP"
else
# do nothing if hardened isnt supported, but dont die either
ewarn "hardened is not supported for this arch in this gcc version"
ebeep
return 0
fi
sed -i \
-e "/^HARD_CFLAGS = /s|=|= ${gcc_hard_flags} |" \
"${S}"/gcc/Makefile.in || die
# rebrand to make bug reports easier
BRANDING_GCC_PKGVERSION=${BRANDING_GCC_PKGVERSION/Gentoo/Gentoo Hardened}
}
create_gcc_env_entry() {
dodir /etc/env.d/gcc
local gcc_envd_base="/etc/env.d/gcc/${CTARGET}-${GCC_CONFIG_VER}"
if [[ -z $1 ]] ; then
gcc_envd_file="${D}${gcc_envd_base}"
# I'm leaving the following commented out to remind me that it
# was an insanely -bad- idea. Stuff broke. GCC_SPECS isnt unset
# on chroot or in non-toolchain.eclass gcc ebuilds!
#gcc_specs_file="${LIBPATH}/specs"
gcc_specs_file=""
else
gcc_envd_file="${D}${gcc_envd_base}-$1"
gcc_specs_file="${LIBPATH}/$1.specs"
fi
# phase PATH/ROOTPATH out ...
echo "PATH=\"${BINPATH}\"" > ${gcc_envd_file}
echo "ROOTPATH=\"${BINPATH}\"" >> ${gcc_envd_file}
echo "GCC_PATH=\"${BINPATH}\"" >> ${gcc_envd_file}
# We want to list the default ABI's LIBPATH first so libtool
# searches that directory first. This is a temporary
# workaround for libtool being stupid and using .la's from
# conflicting ABIs by using the first one in the search path
local abi=${TARGET_DEFAULT_ABI}
local MULTIDIR=$($(XGCC) $(get_abi_CFLAGS ${abi}) --print-multi-directory)
local LDPATH=${LIBPATH}
[[ ${MULTIDIR} != "." ]] && LDPATH+=/${MULTIDIR}
for abi in $(get_all_abis TARGET) ; do
[[ ${abi} == ${TARGET_DEFAULT_ABI} ]] && continue
MULTIDIR=$($(XGCC) $(get_abi_CFLAGS ${abi}) --print-multi-directory)
LDPATH+=:${LIBPATH}
[[ ${MULTIDIR} != "." ]] && LDPATH+=/${MULTIDIR}
done
echo "LDPATH=\"${LDPATH}\"" >> ${gcc_envd_file}
echo "MANPATH=\"${DATAPATH}/man\"" >> ${gcc_envd_file}
echo "INFOPATH=\"${DATAPATH}/info\"" >> ${gcc_envd_file}
echo "STDCXX_INCDIR=\"${STDCXX_INCDIR##*/}\"" >> ${gcc_envd_file}
is_crosscompile && echo "CTARGET=${CTARGET}" >> ${gcc_envd_file}
# Set which specs file to use
[[ -n ${gcc_specs_file} ]] && echo "GCC_SPECS=\"${gcc_specs_file}\"" >> ${gcc_envd_file}
}
setup_minispecs_gcc_build_specs() {
# Setup the "build.specs" file for gcc 4.3 to use when building.
if hardened_gcc_works pie ; then
cat "${WORKDIR}"/specs/pie.specs >> "${WORKDIR}"/build.specs
fi
if hardened_gcc_works ssp ; then
for s in ssp sspall ; do
cat "${WORKDIR}"/specs/${s}.specs >> "${WORKDIR}"/build.specs
done
fi
for s in nostrict znow ; do
cat "${WORKDIR}"/specs/${s}.specs >> "${WORKDIR}"/build.specs
done
export GCC_SPECS="${WORKDIR}"/build.specs
}
copy_minispecs_gcc_specs() {
# setup the hardenedno* specs files and the vanilla specs file.
if hardened_gcc_works ; then
create_gcc_env_entry hardenednopiessp
fi
if hardened_gcc_works pie ; then
create_gcc_env_entry hardenednopie
fi
if hardened_gcc_works ssp ; then
create_gcc_env_entry hardenednossp
fi
create_gcc_env_entry vanilla
insinto ${LIBPATH}
doins "${WORKDIR}"/specs/*.specs || die "failed to install specs"
# Build system specs file which, if it exists, must be a complete set of
# specs as it completely and unconditionally overrides the builtin specs.
# For gcc 4.3
if ! tc_version_is_at_least 4.4 ; then
$(XGCC) -dumpspecs > "${WORKDIR}"/specs/specs
cat "${WORKDIR}"/build.specs >> "${WORKDIR}"/specs/specs
doins "${WORKDIR}"/specs/specs || die "failed to install the specs file"
fi
}
#----<< specs + env.d logic >>----
#---->> pkg_* <<----
toolchain_pkg_setup() {
if [[ -n ${PRERELEASE}${SNAPSHOT} || ${PV} == *9999* ]] &&
[[ -z ${I_PROMISE_TO_SUPPLY_PATCHES_WITH_BUGS} ]]
then
die "Please \`export I_PROMISE_TO_SUPPLY_PATCHES_WITH_BUGS=1\` or define it in your make.conf if you want to use this version." \
"This is to try and cut down on people filing bugs for a compiler we do not currently support."
fi
# we dont want to use the installed compiler's specs to build gcc!
unset GCC_SPECS
if ! use_if_iuse cxx ; then
use_if_iuse go && ewarn 'Go requires a C++ compiler, disabled due to USE="-cxx"'
use_if_iuse objc++ && ewarn 'Obj-C++ requires a C++ compiler, disabled due to USE="-cxx"'
use_if_iuse gcj && ewarn 'GCJ requires a C++ compiler, disabled due to USE="-cxx"'
fi
want_minispecs
unset LANGUAGES #265283
}
toolchain_pkg_postinst() {
do_gcc_config
if ! is_crosscompile ; then
echo
ewarn "If you have issues with packages unable to locate libstdc++.la,"
ewarn "then try running 'fix_libtool_files.sh' on the old gcc versions."
echo
ewarn "You might want to review the GCC upgrade guide when moving between"
ewarn "major versions (like 4.2 to 4.3):"
ewarn "http://www.gentoo.org/doc/en/gcc-upgrading.xml"
echo
fi
if ! is_crosscompile ; then
# hack to prevent collisions between SLOTs
# Clean up old paths
rm -f "${ROOT}"/*/rcscripts/awk/fixlafiles.awk "${ROOT}"/sbin/fix_libtool_files.sh
rmdir "${ROOT}"/*/rcscripts{/awk,} 2>/dev/null
mkdir -p "${ROOT}"/usr/{share/gcc-data,sbin,bin}
cp "${ROOT}/${DATAPATH}"/fixlafiles.awk "${ROOT}"/usr/share/gcc-data/ || die
cp "${ROOT}/${DATAPATH}"/fix_libtool_files.sh "${ROOT}"/usr/sbin/ || die
# Since these aren't critical files and portage sucks with
# handling of binpkgs, don't require these to be found
cp "${ROOT}/${DATAPATH}"/c{89,99} "${ROOT}"/usr/bin/ 2>/dev/null
fi
}
toolchain_pkg_postrm() {
# to make our lives easier (and saner), we do the fix_libtool stuff here.
# rather than checking SLOT's and trying in upgrade paths, we just see if
# the common libstdc++.la exists in the ${LIBPATH} of the gcc that we are
# unmerging. if it does, that means this was a simple re-emerge.
# clean up the cruft left behind by cross-compilers
if is_crosscompile ; then
if [[ -z $(ls "${ROOT}"/etc/env.d/gcc/${CTARGET}* 2>/dev/null) ]] ; then
rm -f "${ROOT}"/etc/env.d/gcc/config-${CTARGET}
rm -f "${ROOT}"/etc/env.d/??gcc-${CTARGET}
rm -f "${ROOT}"/usr/bin/${CTARGET}-{gcc,{g,c}++}{,32,64}
fi
return 0
fi
# ROOT isnt handled by the script
[[ ${ROOT} != "/" ]] && return 0
if [[ ! -e ${LIBPATH}/libstdc++.so ]] ; then
# make sure the profile is sane during same-slot upgrade #289403
do_gcc_config
einfo "Running 'fix_libtool_files.sh ${GCC_RELEASE_VER}'"
/usr/sbin/fix_libtool_files.sh ${GCC_RELEASE_VER}
if [[ -n ${BRANCH_UPDATE} ]] ; then
einfo "Running 'fix_libtool_files.sh ${GCC_RELEASE_VER}-${BRANCH_UPDATE}'"
/usr/sbin/fix_libtool_files.sh ${GCC_RELEASE_VER}-${BRANCH_UPDATE}
fi
fi
return 0
}
#---->> pkg_* <<----
#---->> src_* <<----
guess_patch_type_in_dir() {
[[ -n $(ls "$1"/*.bz2 2>/dev/null) ]] \
&& EPATCH_SUFFIX="patch.bz2" \
|| EPATCH_SUFFIX="patch"
}
do_gcc_rename_java_bins() {
# bug #139918 - conflict between gcc and java-config-2 for ownership of
# /usr/bin/rmi{c,registry}. Done with mv & sed rather than a patch
# because patches would be large (thanks to the rename of man files),
# and it's clear from the sed invocations that all that changes is the
# rmi{c,registry} names to grmi{c,registry} names.
# Kevin F. Quinn 2006-07-12
einfo "Renaming jdk executables rmic and rmiregistry to grmic and grmiregistry."
# 1) Move the man files if present (missing prior to gcc-3.4)
for manfile in rmic rmiregistry; do
[[ -f ${S}/gcc/doc/${manfile}.1 ]] || continue
mv "${S}"/gcc/doc/${manfile}.1 "${S}"/gcc/doc/g${manfile}.1
done
# 2) Fixup references in the docs if present (mission prior to gcc-3.4)
for jfile in gcc/doc/gcj.info gcc/doc/grmic.1 gcc/doc/grmiregistry.1 gcc/java/gcj.texi; do
[[ -f ${S}/${jfile} ]] || continue
sed -i -e 's:rmiregistry:grmiregistry:g' "${S}"/${jfile} ||
die "Failed to fixup file ${jfile} for rename to grmiregistry"
sed -i -e 's:rmic:grmic:g' "${S}"/${jfile} ||
die "Failed to fixup file ${jfile} for rename to grmic"
done
# 3) Fixup Makefiles to build the changed executable names
# These are present in all 3.x versions, and are the important bit
# to get gcc to build with the new names.
for jfile in libjava/Makefile.am libjava/Makefile.in gcc/java/Make-lang.in; do
sed -i -e 's:rmiregistry:grmiregistry:g' "${S}"/${jfile} ||
die "Failed to fixup file ${jfile} for rename to grmiregistry"
# Careful with rmic on these files; it's also the name of a directory
# which should be left unchanged. Replace occurrences of 'rmic$',
# 'rmic_' and 'rmic '.
sed -i -e 's:rmic\([$_ ]\):grmic\1:g' "${S}"/${jfile} ||
die "Failed to fixup file ${jfile} for rename to grmic"
done
}
toolchain_src_unpack() {
[[ -z ${UCLIBC_VER} ]] && [[ ${CTARGET} == *-uclibc* ]] && die "Sorry, this version does not support uClibc"
if [[ ${PV} == *9999* ]]; then
git-2_src_unpack
else
gcc_quick_unpack
fi
export BRANDING_GCC_PKGVERSION="Gentoo ${GCC_PVR}"
cd "${S}"
if ! use vanilla ; then
if [[ -n ${PATCH_VER} ]] ; then
guess_patch_type_in_dir "${WORKDIR}"/patch
EPATCH_MULTI_MSG="Applying Gentoo patches ..." \
epatch "${WORKDIR}"/patch
BRANDING_GCC_PKGVERSION="${BRANDING_GCC_PKGVERSION} p${PATCH_VER}"
fi
if [[ -n ${UCLIBC_VER} ]] ; then
guess_patch_type_in_dir "${WORKDIR}"/uclibc
EPATCH_MULTI_MSG="Applying uClibc patches ..." \
epatch "${WORKDIR}"/uclibc
fi
fi
do_gcc_HTB_patches
do_gcc_PIE_patches
epatch_user
use hardened && make_gcc_hard
# install the libstdc++ python into the right location
# http://gcc.gnu.org/PR51368
if tc_version_is_at_least 4.5 ; then
sed -i \
'/^pythondir =/s:=.*:= $(datadir)/python:' \
"${S}"/libstdc++-v3/python/Makefile.in || die
fi
# No idea when this first started being fixed, but let's go with 4.3.x for now
if ! tc_version_is_at_least 4.3 ; then
fix_files=""
for x in contrib/test_summary libstdc++-v3/scripts/check_survey.in ; do
[[ -e ${x} ]] && fix_files="${fix_files} ${x}"
done
ht_fix_file ${fix_files} */configure *.sh */Makefile.in
fi
setup_multilib_osdirnames
gcc_version_patch
if tc_version_is_at_least 4.1 ; then
if [[ -n ${SNAPSHOT} || -n ${PRERELEASE} ]] ; then
# BASE-VER must be a three-digit version number
# followed by an optional -pre string
# eg. 4.5.1, 4.6.2-pre20120213, 4.7.0-pre9999
# If BASE-VER differs from ${PV/_/-} then libraries get installed in
# the wrong directory.
echo ${PV/_/-} > "${S}"/gcc/BASE-VER
fi
fi
# >= gcc-4.3 doesn't bundle ecj.jar, so copy it
if tc_version_is_at_least 4.3 && use gcj ; then
if tc_version_is_at_least "4.5" ; then
einfo "Copying ecj-4.5.jar"
cp -pPR "${DISTDIR}/ecj-4.5.jar" "${S}/ecj.jar" || die
elif tc_version_is_at_least "4.3" ; then
einfo "Copying ecj-4.3.jar"
cp -pPR "${DISTDIR}/ecj-4.3.jar" "${S}/ecj.jar" || die
fi
fi
# disable --as-needed from being compiled into gcc specs
# natively when using a gcc version < 3.4.4
# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14992
if ! tc_version_is_at_least 3.4.4 ; then
sed -i -e s/HAVE_LD_AS_NEEDED/USE_LD_AS_NEEDED/g "${S}"/gcc/config.in
fi
# In gcc 3.3.x and 3.4.x, rename the java bins to gcc-specific names
# in line with gcc-4.
if tc_version_is_at_least 3.3 && ! tc_version_is_at_least 4.0 ; then
do_gcc_rename_java_bins
fi
# Prevent libffi from being installed
sed -i -e 's/\(install.*:\) install-.*recursive/\1/' "${S}"/libffi/Makefile.in
sed -i -e 's/\(install-data-am:\).*/\1/' "${S}"/libffi/include/Makefile.in
# Fixup libtool to correctly generate .la files with portage
cd "${S}"
elibtoolize --portage --shallow --no-uclibc
gnuconfig_update
# update configure files
local f
einfo "Fixing misc issues in configure files"
tc_version_is_at_least 4.1 && epatch "${GCC_FILESDIR}"/gcc-configure-texinfo.patch
for f in $(grep -l 'autoconf version 2.13' $(find "${S}" -name configure)) ; do
ebegin " Updating ${f/${S}\/} [LANG]"
patch "${f}" "${GCC_FILESDIR}"/gcc-configure-LANG.patch >& "${T}"/configure-patch.log \
|| eerror "Please file a bug about this"
eend $?
done
sed -i 's|A-Za-z0-9|[:alnum:]|g' "${S}"/gcc/*.awk #215828
if [[ -x contrib/gcc_update ]] ; then
einfo "Touching generated files"
./contrib/gcc_update --touch | \
while read f ; do
einfo " ${f%%...}"
done
fi
disable_multilib_libjava || die "failed to disable multilib java"
}
gcc-abi-map() {
# Convert the ABI name we use in Gentoo to what gcc uses
local map=()
case ${CTARGET} in
mips*) map=("o32 32" "n32 n32" "n64 64") ;;
x86_64*) map=("amd64 m64" "x86 m32" "x32 mx32") ;;
esac
local m
for m in "${map[@]}" ; do
l=( ${m} )
[[ $1 == ${l[0]} ]] && echo ${l[1]} && break
done
}
gcc-multilib-configure() {
if ! is_multilib ; then
confgcc+=" --disable-multilib"
# Fun times: if we are building for a target that has multiple
# possible ABI formats, and the user has told us to pick one
# that isn't the default, then not specifying it via the list
# below will break that on us.
else
confgcc+=" --enable-multilib"
fi
# translate our notion of multilibs into gcc's
local abi list
for abi in $(get_all_abis TARGET) ; do
local l=$(gcc-abi-map ${abi})
[[ -n ${l} ]] && list+=",${l}"
done
if [[ -n ${list} ]] ; then
case ${CTARGET} in
x86_64*)
tc_version_is_at_least 4.7 && confgcc+=" --with-multilib-list=${list:1}"
;;
esac
fi
}
gcc-compiler-configure() {
gcc-multilib-configure
if tc_version_is_at_least "4.0" ; then
if in_iuse mudflap ; then
confgcc+=" $(use_enable mudflap libmudflap)"
else
confgcc+=" --disable-libmudflap"
fi
if use_if_iuse libssp ; then
confgcc+=" --enable-libssp"
else
export gcc_cv_libc_provides_ssp=yes
confgcc+=" --disable-libssp"
fi
# If we want hardened support with the newer piepatchset for >=gcc 4.4
if tc_version_is_at_least 4.4 && want_minispecs ; then
confgcc+=" $(use_enable hardened esp)"
fi
if tc_version_is_at_least "4.2" ; then
if in_iuse openmp ; then
# Make sure target has pthreads support. #326757 #335883
# There shouldn't be a chicken&egg problem here as openmp won't
# build without a C library, and you can't build that w/out
# already having a compiler ...
if ! is_crosscompile || \
$(tc-getCPP ${CTARGET}) -E - <<<"#include <pthread.h>" >& /dev/null
then
confgcc+=" $(use_enable openmp libgomp)"
else
# Force disable as the configure script can be dumb #359855
confgcc+=" --disable-libgomp"
fi
else
# For gcc variants where we don't want openmp (e.g. kgcc)
confgcc+=" --disable-libgomp"
fi
fi
# Stick the python scripts in their own slotted directory
# bug #279252
#
# --with-python-dir=DIR
# Specifies where to install the Python modules used for aot-compile. DIR
# should not include the prefix used in installation. For example, if the
# Python modules are to be installed in /usr/lib/python2.5/site-packages,
# then --with-python-dir=/lib/python2.5/site-packages should be passed.
#
# This should translate into "/share/gcc-data/${CTARGET}/${GCC_CONFIG_VER}/python"
if tc_version_is_at_least "4.4" ; then
confgcc+=" --with-python-dir=${DATAPATH/$PREFIX/}/python"
fi
fi
# Enable build warnings by default with cross-compilers when system
# paths are included (e.g. via -I flags).
is_crosscompile && confgcc+=" --enable-poison-system-directories"
# For newer versions of gcc, use the default ("release"), because no
# one (even upstream apparently) tests with it disabled. #317217
if tc_version_is_at_least 4 || [[ -n ${GCC_CHECKS_LIST} ]] ; then
confgcc+=" --enable-checking=${GCC_CHECKS_LIST:-release}"
else
confgcc+=" --disable-checking"
fi
# GTK+ is preferred over xlib in 3.4.x (xlib is unmaintained
# right now). Much thanks to <csm@gnu.org> for the heads up.
# Travis Tilley <lv@gentoo.org> (11 Jul 2004)
if ! is_gcj ; then
confgcc+=" --disable-libgcj"
elif use gtk ; then
confgcc+=" --enable-java-awt=gtk"
fi
# newer gcc versions like to bootstrap themselves with C++,
# so we need to manually disable it ourselves
if tc_version_is_at_least 4.7 && ! is_cxx ; then
confgcc+=" --disable-build-with-cxx --disable-build-poststage1-with-cxx"
fi
# newer gcc's come with libquadmath, but only fortran uses
# it, so auto punt it when we don't care
if tc_version_is_at_least 4.6 && ! is_fortran ; then
confgcc+=" --disable-libquadmath"
fi
local with_abi_map=()
case $(tc-arch) in
arm) #264534 #414395
local a arm_arch=${CTARGET%%-*}
# Remove trailing endian variations first: eb el be bl b l
for a in e{b,l} {b,l}e b l ; do
if [[ ${arm_arch} == *${a} ]] ; then
arm_arch=${arm_arch%${a}}
break
fi
done
# Convert armv7{a,r,m} to armv7-{a,r,m}
[[ ${arm_arch} == armv7? ]] && arm_arch=${arm_arch/7/7-}
# See if this is a valid --with-arch flag
if (srcdir=${S}/gcc target=${CTARGET} with_arch=${arm_arch};
. "${srcdir}"/config.gcc) &>/dev/null
then
confgcc+=" --with-arch=${arm_arch}"
fi
# Enable hardvfp
if [[ $(tc-is-softfloat) == "no" ]] && \
[[ ${CTARGET} == armv[67]* ]] && \
tc_version_is_at_least "4.5"
then
# Follow the new arm hardfp distro standard by default
confgcc+=" --with-float=hard"
case ${CTARGET} in
armv6*) confgcc+=" --with-fpu=vfp" ;;
armv7*) confgcc+=" --with-fpu=vfpv3-d16" ;;
esac
fi
;;
# Add --with-abi flags to set default ABI
mips)
confgcc+=" --with-abi=$(gcc-abi-map ${TARGET_DEFAULT_ABI})"
;;
amd64)
# drop the older/ABI checks once this get's merged into some
# version of gcc upstream
if tc_version_is_at_least 4.7 && has x32 $(get_all_abis TARGET) ; then
confgcc+=" --with-abi=$(gcc-abi-map ${TARGET_DEFAULT_ABI})"
fi
;;
# Default arch for x86 is normally i386, lets give it a bump
# since glibc will do so based on CTARGET anyways
x86)
confgcc+=" --with-arch=${CTARGET%%-*}"
;;
# Enable sjlj exceptions for backward compatibility on hppa
hppa)
[[ ${GCCMAJOR} == "3" ]] && confgcc+=" --enable-sjlj-exceptions"
;;
# Set up defaults based on current CFLAGS
ppc)
is-flagq -mfloat-gprs=double && confgcc+=" --enable-e500-double"
[[ ${CTARGET//_/-} == *-e500v2-* ]] && confgcc+=" --enable-e500-double"
;;
esac
local GCC_LANG="c"
is_cxx && GCC_LANG+=",c++"
is_d && GCC_LANG+=",d"
is_gcj && GCC_LANG+=",java"
is_go && GCC_LANG+=",go"
if is_objc || is_objcxx ; then
GCC_LANG+=",objc"
if tc_version_is_at_least "4.0" ; then
use objc-gc && confgcc+=" --enable-objc-gc"
fi
is_objcxx && GCC_LANG+=",obj-c++"
fi
is_treelang && GCC_LANG+=",treelang"
# fortran support just got sillier! the lang value can be f77 for
# fortran77, f95 for fortran95, or just plain old fortran for the
# currently supported standard depending on gcc version.
is_fortran && GCC_LANG+=",fortran"
is_f77 && GCC_LANG+=",f77"
is_f95 && GCC_LANG+=",f95"
# We do NOT want 'ADA support' in here!
# is_ada && GCC_LANG+=",ada"
einfo "configuring for GCC_LANG: ${GCC_LANG}"
confgcc+=" --enable-languages=${GCC_LANG}"
}
gcc_do_configure() {
local confgcc
# Sanity check for USE=nocxx -> USE=cxx migration
if in_iuse cxx && in_iuse nocxx ; then
if (use cxx && use nocxx) || (use !cxx && use !nocxx) ; then
eerror "We are migrating USE=nocxx to USE=cxx, but your USE settings do not make"
eerror "sense. Please make sure these two flags line up logically in your setup."
die "USE='cxx nocxx' and USE='-cxx -nocxx' make no sense"
fi
fi
# Set configuration based on path variables
confgcc+=" \
--prefix=${PREFIX} \
--bindir=${BINPATH} \
--includedir=${INCLUDEPATH} \
--datadir=${DATAPATH} \
--mandir=${DATAPATH}/man \
--infodir=${DATAPATH}/info \
--with-gxx-include-dir=${STDCXX_INCDIR}"
# On Darwin we need libdir to be set in order to get correct install names
# for things like libobjc-gnu, libgcj and libfortran. If we enable it on
# non-Darwin we screw up the behaviour this eclass relies on. We in
# particular need this over --libdir for bug #255315.
[[ ${CTARGET} == *-darwin* ]] && \
confgcc+=" --enable-version-specific-runtime-libs"
# All our cross-compile logic goes here ! woo !
confgcc+=" --host=${CHOST}"
if is_crosscompile || tc-is-cross-compiler ; then
# Straight from the GCC install doc:
# "GCC has code to correctly determine the correct value for target
# for nearly all native systems. Therefore, we highly recommend you
# not provide a configure target when configuring a native compiler."
confgcc+=" --target=${CTARGET}"
fi
[[ -n ${CBUILD} ]] && confgcc+=" --build=${CBUILD}"
# ppc altivec support
confgcc+=" $(use_enable altivec)"
# gcc has fixed-point arithmetic support in 4.3 for mips targets that can
# significantly increase compile time by several hours. This will allow
# users to control this feature in the event they need the support.
tc_version_is_at_least "4.3" && confgcc+=" $(use_enable fixed-point)"
# Graphite support was added in 4.4, which depends on external libraries
# for optimizations. Current versions use cloog-ppl (cloog fork with Parma
# PPL backend). Sometime in the future we will use upstream cloog with the
# ISL backend (note: PPL will still be a requirement). cloog-ppl's include
# path was modified to prevent collisions between the two packages (library
# names are different).
#
# We disable the PPL version check so we can use >=ppl-0.11.
if tc_version_is_at_least "4.4"; then
confgcc+=" $(use_with graphite ppl)"
confgcc+=" $(use_with graphite cloog)"
if use graphite; then
confgcc+=" --disable-ppl-version-check"
confgcc+=" --with-cloog-include=/usr/include/cloog-ppl"
fi
fi
# LTO support was added in 4.5, which depends upon elfutils. This allows
# users to enable that option, and pull in the additional library. In 4.6,
# the dependency is no longer required.
if tc_version_is_at_least "4.6" ; then
confgcc+=" --enable-lto"
elif tc_version_is_at_least "4.5" ; then
confgcc+=" $(use_enable lto)"
fi
case $(tc-is-softfloat) in
yes) confgcc+=" --with-float=soft" ;;
softfp) confgcc+=" --with-float=softfp" ;;
*)
# If they've explicitly opt-ed in, do hardfloat,
# otherwise let the gcc default kick in.
[[ ${CTARGET//_/-} == *-hardfloat-* ]] \
&& confgcc+=" --with-float=hard"
;;
esac
# Native Language Support
if use nls ; then
confgcc+=" --enable-nls --without-included-gettext"
else
confgcc+=" --disable-nls"
fi
# reasonably sane globals (hopefully)
confgcc+=" \
--with-system-zlib \
--enable-obsolete \
--disable-werror \
--enable-secureplt"
gcc-compiler-configure || die
if is_crosscompile ; then
# When building a stage1 cross-compiler (just C compiler), we have to
# disable a bunch of features or gcc goes boom
local needed_libc=""
case ${CTARGET} in
*-linux) needed_libc=no-fucking-clue;;
*-dietlibc) needed_libc=dietlibc;;
*-elf|*-eabi) needed_libc=newlib;;
*-freebsd*) needed_libc=freebsd-lib;;
*-gnu*) needed_libc=glibc;;
*-klibc) needed_libc=klibc;;
*-uclibc*) needed_libc=uclibc;;
*-cygwin) needed_libc=cygwin;;
x86_64-*-mingw*|\
*-w64-mingw*) needed_libc=mingw64-runtime;;
mingw*|*-mingw*) needed_libc=mingw-runtime;;
avr) confgcc+=" --enable-shared --disable-threads";;
esac
if [[ -n ${needed_libc} ]] ; then
if ! has_version ${CATEGORY}/${needed_libc} ; then
confgcc+=" --disable-shared --disable-threads --without-headers"
elif built_with_use --hidden --missing false ${CATEGORY}/${needed_libc} crosscompile_opts_headers-only ; then
confgcc+=" --disable-shared --with-sysroot=${PREFIX}/${CTARGET}"
else
confgcc+=" --with-sysroot=${PREFIX}/${CTARGET}"
fi
fi
tc_version_is_at_least 4.2 && confgcc+=" --disable-bootstrap"
else
if tc-is-static-only ; then
confgcc+=" --disable-shared"
else
confgcc+=" --enable-shared"
fi
case ${CHOST} in
mingw*|*-mingw*|*-cygwin)
confgcc+=" --enable-threads=win32" ;;
*)
confgcc+=" --enable-threads=posix" ;;
esac
fi
# __cxa_atexit is "essential for fully standards-compliant handling of
# destructors", but apparently requires glibc.
case ${CTARGET} in
*-uclibc*)
confgcc+=" --disable-__cxa_atexit --enable-target-optspace $(use_enable nptl tls)"
[[ ${GCCMAJOR}.${GCCMINOR} == 3.3 ]] && confgcc+=" --enable-sjlj-exceptions"
if tc_version_is_at_least 3.4 && ! tc_version_is_at_least 4.3 ; then
confgcc+=" --enable-clocale=uclibc"
fi
;;
*-elf|*-eabi)
confgcc+=" --with-newlib"
;;
*-gnu*)
confgcc+=" --enable-__cxa_atexit"
confgcc+=" --enable-clocale=gnu"
;;
*-freebsd*)
confgcc+=" --enable-__cxa_atexit"
;;
*-solaris*)
confgcc+=" --enable-__cxa_atexit"
;;
esac
tc_version_is_at_least 3.4 || confgcc+=" --disable-libunwind-exceptions"
# if the target can do biarch (-m32/-m64), enable it. overhead should
# be small, and should simplify building of 64bit kernels in a 32bit
# userland by not needing sys-devel/kgcc64. #349405
case $(tc-arch) in
ppc|ppc64) tc_version_is_at_least 3.4 && confgcc+=" --enable-targets=all" ;;
sparc) tc_version_is_at_least 4.4 && confgcc+=" --enable-targets=all" ;;
amd64|x86) tc_version_is_at_least 4.3 && confgcc+=" --enable-targets=all" ;;
esac
tc_version_is_at_least 4.3 && set -- "$@" \
--with-bugurl=http://bugs.gentoo.org/ \
--with-pkgversion="${BRANDING_GCC_PKGVERSION}"
set -- ${confgcc} "$@" ${EXTRA_ECONF}
# Nothing wrong with a good dose of verbosity
echo
einfo "PREFIX: ${PREFIX}"
einfo "BINPATH: ${BINPATH}"
einfo "LIBPATH: ${LIBPATH}"
einfo "DATAPATH: ${DATAPATH}"
einfo "STDCXX_INCDIR: ${STDCXX_INCDIR}"
echo
einfo "Configuring GCC with: ${@//--/\n\t--}"
echo
# Build in a separate build tree
mkdir -p "${WORKDIR}"/build
pushd "${WORKDIR}"/build > /dev/null
# and now to do the actual configuration
addwrite /dev/zero
echo "${S}"/configure "$@"
"${S}"/configure "$@" || die "failed to run configure"
# return to whatever directory we were in before
popd > /dev/null
}
has toolchain_death_notice ${EBUILD_DEATH_HOOKS} || EBUILD_DEATH_HOOKS+=" toolchain_death_notice"
toolchain_death_notice() {
pushd "${WORKDIR}"/build >/dev/null
tar jcf gcc-build-logs.tar.bz2 $(find -name config.log)
eerror
eerror "Please include ${PWD}/gcc-build-logs.tar.bz2 in your bug report"
eerror
popd >/dev/null
}
# This function accepts one optional argument, the make target to be used.
# If ommitted, gcc_do_make will try to guess whether it should use all,
# profiledbootstrap, or bootstrap-lean depending on CTARGET and arch. An
# example of how to use this function:
#
# gcc_do_make all-target-libstdc++-v3
#
# In addition to the target to be used, the following variables alter the
# behavior of this function:
#
# LDFLAGS
# Flags to pass to ld
#
# STAGE1_CFLAGS
# CFLAGS to use during stage1 of a gcc bootstrap
#
# BOOT_CFLAGS
# CFLAGS to use during stages 2+3 of a gcc bootstrap.
#
# Travis Tilley <lv@gentoo.org> (04 Sep 2004)
#
gcc_do_make() {
# Fix for libtool-portage.patch
local OLDS=${S}
S=${WORKDIR}/build
# Set make target to $1 if passed
[[ -n $1 ]] && GCC_MAKE_TARGET=$1
# default target
if is_crosscompile || tc-is-cross-compiler ; then
# 3 stage bootstrapping doesnt quite work when you cant run the
# resulting binaries natively ^^;
GCC_MAKE_TARGET=${GCC_MAKE_TARGET-all}
else
GCC_MAKE_TARGET=${GCC_MAKE_TARGET-bootstrap-lean}
fi
# the gcc docs state that parallel make isnt supported for the
# profiledbootstrap target, as collisions in profile collecting may occur.
# boundschecking also seems to introduce parallel build issues.
if [[ ${GCC_MAKE_TARGET} == "profiledbootstrap" ]] ||
use_if_iuse boundschecking
then
export MAKEOPTS="${MAKEOPTS} -j1"
fi
if [[ ${GCC_MAKE_TARGET} == "all" ]] ; then
STAGE1_CFLAGS=${STAGE1_CFLAGS-"${CFLAGS}"}
elif [[ $(gcc-version) == "3.4" && ${GCC_BRANCH_VER} == "3.4" ]] && gcc-specs-ssp ; then
# See bug #79852
STAGE1_CFLAGS=${STAGE1_CFLAGS-"-O2"}
fi
if is_crosscompile; then
# In 3.4, BOOT_CFLAGS is never used on a crosscompile...
# but I'll leave this in anyways as someone might have had
# some reason for putting it in here... --eradicator
BOOT_CFLAGS=${BOOT_CFLAGS-"-O2"}
else
# we only want to use the system's CFLAGS if not building a
# cross-compiler.
BOOT_CFLAGS=${BOOT_CFLAGS-"$(get_abi_CFLAGS ${TARGET_DEFAULT_ABI}) ${CFLAGS}"}
fi
pushd "${WORKDIR}"/build
emake \
LDFLAGS="${LDFLAGS}" \
STAGE1_CFLAGS="${STAGE1_CFLAGS}" \
LIBPATH="${LIBPATH}" \
BOOT_CFLAGS="${BOOT_CFLAGS}" \
${GCC_MAKE_TARGET} \
|| die "emake failed with ${GCC_MAKE_TARGET}"
if ! is_crosscompile && use cxx && use doc ; then
if type -p doxygen > /dev/null ; then
if tc_version_is_at_least 4.3 ; then
cd "${CTARGET}"/libstdc++-v3/doc
emake doc-man-doxygen || ewarn "failed to make docs"
elif tc_version_is_at_least 3.0 ; then
cd "${CTARGET}"/libstdc++-v3
emake doxygen-man || ewarn "failed to make docs"
fi
else
ewarn "Skipping libstdc++ manpage generation since you don't have doxygen installed"
fi
fi
popd
}
# This is mostly a stub function to be overwritten in an ebuild
gcc_do_filter_flags() {
strip-flags
# In general gcc does not like optimization, and add -O2 where
# it is safe. This is especially true for gcc 3.3 + 3.4
replace-flags -O? -O2
# ... sure, why not?
strip-unsupported-flags
# dont want to funk ourselves
filter-flags '-mabi*' -m31 -m32 -m64
case ${GCC_BRANCH_VER} in
3.2|3.3)
replace-cpu-flags k8 athlon64 opteron i686 x86-64
replace-cpu-flags pentium-m pentium3m pentium3
case $(tc-arch) in
amd64|x86) filter-flags '-mtune=*' ;;
# in gcc 3.3 there is a bug on ppc64 where if -mcpu is used,
# the compiler wrongly assumes a 32bit target
ppc64) filter-flags "-mcpu=*";;
esac
case $(tc-arch) in
amd64) replace-cpu-flags core2 nocona;;
x86) replace-cpu-flags core2 prescott;;
esac
replace-cpu-flags G3 750
replace-cpu-flags G4 7400
replace-cpu-flags G5 7400
# XXX: should add a sed or something to query all supported flags
# from the gcc source and trim everything else ...
filter-flags -f{no-,}unit-at-a-time -f{no-,}web -mno-tls-direct-seg-refs
filter-flags -f{no-,}stack-protector{,-all}
filter-flags -fvisibility-inlines-hidden -fvisibility=hidden
;;
3.4|4.*)
case $(tc-arch) in
x86|amd64) filter-flags '-mcpu=*';;
*-macos)
# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25127
[[ ${GCC_BRANCH_VER} == 4.0 || ${GCC_BRANCH_VER} == 4.1 ]] && \
filter-flags '-mcpu=*' '-march=*' '-mtune=*'
;;
esac
;;
esac
# Compile problems with these (bug #6641 among others)...
#filter-flags "-fno-exceptions -fomit-frame-pointer -fforce-addr"
# CFLAGS logic (verified with 3.4.3):
# CFLAGS:
# This conflicts when creating a crosscompiler, so set to a sane
# default in this case:
# used in ./configure and elsewhere for the native compiler
# used by gcc when creating libiberty.a
# used by xgcc when creating libstdc++ (and probably others)!
# this behavior should be removed...
#
# CXXFLAGS:
# used by xgcc when creating libstdc++
#
# STAGE1_CFLAGS (not used in creating a crosscompile gcc):
# used by ${CHOST}-gcc for building stage1 compiler
#
# BOOT_CFLAGS (not used in creating a crosscompile gcc):
# used by xgcc for building stage2/3 compiler
if is_crosscompile ; then
# Set this to something sane for both native and target
CFLAGS="-O2 -pipe"
local VAR="CFLAGS_"${CTARGET//-/_}
CXXFLAGS=${!VAR}
fi
export GCJFLAGS=${GCJFLAGS:-${CFLAGS}}
}
toolchain_src_compile() {
gcc_do_filter_flags
einfo "CFLAGS=\"${CFLAGS}\""
einfo "CXXFLAGS=\"${CXXFLAGS}\""
# Force internal zip based jar script to avoid random
# issues with 3rd party jar implementations. #384291
export JAR=no
# For hardened gcc 4.3 piepatchset to build the hardened specs
# file (build.specs) to use when building gcc.
if ! tc_version_is_at_least 4.4 && want_minispecs ; then
setup_minispecs_gcc_build_specs
fi
# Build in a separate build tree
mkdir -p "${WORKDIR}"/build
pushd "${WORKDIR}"/build > /dev/null
einfo "Configuring ${PN} ..."
gcc_do_configure
touch "${S}"/gcc/c-gperf.h
# Do not make manpages if we do not have perl ...
[[ ! -x /usr/bin/perl ]] \
&& find "${WORKDIR}"/build -name '*.[17]' | xargs touch
einfo "Compiling ${PN} ..."
gcc_do_make ${GCC_MAKE_TARGET}
popd > /dev/null
}
toolchain_src_test() {
cd "${WORKDIR}"/build
emake -k check || ewarn "check failed and that sucks :("
}
toolchain_src_install() {
local x=
cd "${WORKDIR}"/build
# Do allow symlinks in private gcc include dir as this can break the build
find gcc/include*/ -type l -print0 | xargs -0 rm -f
# Remove generated headers, as they can cause things to break
# (ncurses, openssl, etc).
for x in $(find gcc/include*/ -name '*.h') ; do
grep -q 'It has been auto-edited by fixincludes from' "${x}" \
&& rm -f "${x}"
done
# Do the 'make install' from the build directory
S=${WORKDIR}/build \
emake -j1 DESTDIR="${D}" install || die
# Punt some tools which are really only useful while building gcc
find "${D}" -name install-tools -prune -type d -exec rm -rf "{}" \;
# This one comes with binutils
find "${D}" -name libiberty.a -exec rm -f "{}" \;
# Move the libraries to the proper location
gcc_movelibs
# Basic sanity check
if ! is_crosscompile ; then
local EXEEXT
eval $(grep ^EXEEXT= "${WORKDIR}"/build/gcc/config.log)
[[ -r ${D}${BINPATH}/gcc${EXEEXT} ]] || die "gcc not found in ${D}"
fi
dodir /etc/env.d/gcc
create_gcc_env_entry
# Setup the gcc_env_entry for hardened gcc 4 with minispecs
if want_minispecs ; then
copy_minispecs_gcc_specs
fi
# Make sure we dont have stuff lying around that
# can nuke multiple versions of gcc
gcc_slot_java
# These should be symlinks
dodir /usr/bin
cd "${D}"${BINPATH}
# Ugh: we really need to auto-detect this list.
# It's constantly out of date.
for x in cpp gcc g++ c++ gcov g77 gcj gcjh gfortran gccgo ; do
# For some reason, g77 gets made instead of ${CTARGET}-g77...
# this should take care of that
[[ -f ${x} ]] && mv ${x} ${CTARGET}-${x}
if [[ -f ${CTARGET}-${x} ]] ; then
if ! is_crosscompile ; then
ln -sf ${CTARGET}-${x} ${x}
dosym ${BINPATH}/${CTARGET}-${x} \
/usr/bin/${x}-${GCC_CONFIG_VER}
fi
# Create version-ed symlinks
dosym ${BINPATH}/${CTARGET}-${x} \
/usr/bin/${CTARGET}-${x}-${GCC_CONFIG_VER}
fi
if [[ -f ${CTARGET}-${x}-${GCC_CONFIG_VER} ]] ; then
rm -f ${CTARGET}-${x}-${GCC_CONFIG_VER}
ln -sf ${CTARGET}-${x} ${CTARGET}-${x}-${GCC_CONFIG_VER}
fi
done
# Now do the fun stripping stuff
env RESTRICT="" CHOST=${CHOST} prepstrip "${D}${BINPATH}"
env RESTRICT="" CHOST=${CTARGET} prepstrip "${D}${LIBPATH}"
# gcc used to install helper binaries in lib/ but then moved to libexec/
[[ -d ${D}${PREFIX}/libexec/gcc ]] && \
env RESTRICT="" CHOST=${CHOST} prepstrip "${D}${PREFIX}/libexec/gcc/${CTARGET}/${GCC_CONFIG_VER}"
cd "${S}"
if is_crosscompile; then
rm -rf "${D}"/usr/share/{man,info}
rm -rf "${D}"${DATAPATH}/{man,info}
else
local cxx_mandir=$(find "${WORKDIR}/build/${CTARGET}/libstdc++-v3" -name man)
if [[ -d ${cxx_mandir} ]] ; then
# clean bogus manpages #113902
find "${cxx_mandir}" -name '*_build_*' -exec rm {} \;
cp -r "${cxx_mandir}"/man? "${D}/${DATAPATH}"/man/
fi
has noinfo ${FEATURES} \
&& rm -r "${D}/${DATAPATH}"/info \
|| prepinfo "${DATAPATH}"
has noman ${FEATURES} \
&& rm -r "${D}/${DATAPATH}"/man \
|| prepman "${DATAPATH}"
fi
# prune empty dirs left behind
find "${D}" -depth -type d -delete 2>/dev/null
# install testsuite results
if use test; then
docinto testsuite
find "${WORKDIR}"/build -type f -name "*.sum" -print0 | xargs -0 dodoc
find "${WORKDIR}"/build -type f -path "*/testsuite/*.log" -print0 \
| xargs -0 dodoc
fi
# Rather install the script, else portage with changing $FILESDIR
# between binary and source package borks things ....
if ! is_crosscompile ; then
insinto "${DATAPATH}"
if tc_version_is_at_least 4.0 ; then
newins "${GCC_FILESDIR}"/awk/fixlafiles.awk-no_gcc_la fixlafiles.awk || die
find "${D}/${LIBPATH}" -name libstdc++.la -type f -exec rm "{}" \;
else
doins "${GCC_FILESDIR}"/awk/fixlafiles.awk || die
fi
exeinto "${DATAPATH}"
doexe "${GCC_FILESDIR}"/fix_libtool_files.sh || die
doexe "${GCC_FILESDIR}"/c{89,99} || die
fi
# Use gid of 0 because some stupid ports don't have
# the group 'root' set to gid 0. Send to /dev/null
# for people who are testing as non-root.
chown -R root:0 "${D}"${LIBPATH} 2>/dev/null
# Move pretty-printers to gdb datadir to shut ldconfig up
local py gdbdir=/usr/share/gdb/auto-load${LIBPATH/\/lib\//\/$(get_libdir)\/}
pushd "${D}"${LIBPATH} >/dev/null
for py in $(find . -name '*-gdb.py') ; do
local multidir=${py%/*}
insinto "${gdbdir}/${multidir}"
sed -i "/^libdir =/s:=.*:= '${LIBPATH}/${multidir}':" "${py}" || die #348128
doins "${py}" || die
rm "${py}" || die
done
popd >/dev/null
# Don't scan .gox files for executable stacks - false positives
export QA_EXECSTACK="usr/lib*/go/*/*.gox"
export QA_WX_LOAD="usr/lib*/go/*/*.gox"
# Disable RANDMMAP so PCH works. #301299
if tc_version_is_at_least 4.3 ; then
pax-mark -r "${D}${PREFIX}/libexec/gcc/${CTARGET}/${GCC_CONFIG_VER}/cc1"
pax-mark -r "${D}${PREFIX}/libexec/gcc/${CTARGET}/${GCC_CONFIG_VER}/cc1plus"
fi
}
gcc_slot_java() {
local x
# Move Java headers to compiler-specific dir
for x in "${D}"${PREFIX}/include/gc*.h "${D}"${PREFIX}/include/j*.h ; do
[[ -f ${x} ]] && mv -f "${x}" "${D}"${LIBPATH}/include/
done
for x in gcj gnu java javax org ; do
if [[ -d ${D}${PREFIX}/include/${x} ]] ; then
dodir /${LIBPATH}/include/${x}
mv -f "${D}"${PREFIX}/include/${x}/* "${D}"${LIBPATH}/include/${x}/
rm -rf "${D}"${PREFIX}/include/${x}
fi
done
if [[ -d ${D}${PREFIX}/lib/security ]] || [[ -d ${D}${PREFIX}/$(get_libdir)/security ]] ; then
dodir /${LIBPATH}/security
mv -f "${D}"${PREFIX}/lib*/security/* "${D}"${LIBPATH}/security
rm -rf "${D}"${PREFIX}/lib*/security
fi
# Move random gcj files to compiler-specific directories
for x in libgcj.spec logging.properties ; do
x="${D}${PREFIX}/lib/${x}"
[[ -f ${x} ]] && mv -f "${x}" "${D}"${LIBPATH}/
done
# SLOT up libgcj.pc if it's available (and let gcc-config worry about links)
for x in "${D}"${PREFIX}/lib*/pkgconfig/libgcj*.pc ; do
[[ -f ${x} ]] || continue
sed -i "/^libdir=/s:=.*:=${LIBPATH}:" "${x}"
mv "${x}" "${D}"/usr/lib/pkgconfig/libgcj-${GCC_PV}.pc || die
done
# Rename jar because it could clash with Kaffe's jar if this gcc is
# primary compiler (aka don't have the -<version> extension)
cd "${D}"${BINPATH}
[[ -f jar ]] && mv -f jar gcj-jar
}
# Move around the libs to the right location. For some reason,
# when installing gcc, it dumps internal libraries into /usr/lib
# instead of the private gcc lib path
gcc_movelibs() {
# older versions of gcc did not support --print-multi-os-directory
tc_version_is_at_least 3.0 || return 0
local multiarg removedirs=""
for multiarg in $($(XGCC) -print-multi-lib) ; do
multiarg=${multiarg#*;}
multiarg=${multiarg//@/ -}
local OS_MULTIDIR=$($(XGCC) ${multiarg} --print-multi-os-directory)
local MULTIDIR=$($(XGCC) ${multiarg} --print-multi-directory)
local TODIR=${D}${LIBPATH}/${MULTIDIR}
local FROMDIR=
[[ -d ${TODIR} ]] || mkdir -p ${TODIR}
for FROMDIR in \
${LIBPATH}/${OS_MULTIDIR} \
${LIBPATH}/../${MULTIDIR} \
${PREFIX}/lib/${OS_MULTIDIR} \
${PREFIX}/${CTARGET}/lib/${OS_MULTIDIR}
do
removedirs="${removedirs} ${FROMDIR}"
FROMDIR=${D}${FROMDIR}
if [[ ${FROMDIR} != "${TODIR}" && -d ${FROMDIR} ]] ; then
local files=$(find "${FROMDIR}" -maxdepth 1 ! -type d 2>/dev/null)
if [[ -n ${files} ]] ; then
mv ${files} "${TODIR}"
fi
fi
done
fix_libtool_libdir_paths "${LIBPATH}/${MULTIDIR}"
done
# We remove directories separately to avoid this case:
# mv SRC/lib/../lib/*.o DEST
# rmdir SRC/lib/../lib/
# mv SRC/lib/../lib32/*.o DEST # Bork
for FROMDIR in ${removedirs} ; do
rmdir "${D}"${FROMDIR} >& /dev/null
done
find "${D}" -type d | xargs rmdir >& /dev/null
}
#----<< src_* >>----
#---->> unorganized crap in need of refactoring follows
# gcc_quick_unpack will unpack the gcc tarball and patches in a way that is
# consistant with the behavior of get_gcc_src_uri. The only patch it applies
# itself is the branch update if present.
#
# Travis Tilley <lv@gentoo.org> (03 Sep 2004)
#
gcc_quick_unpack() {
pushd "${WORKDIR}" > /dev/null
export PATCH_GCC_VER=${PATCH_GCC_VER:-${GCC_RELEASE_VER}}
export UCLIBC_GCC_VER=${UCLIBC_GCC_VER:-${PATCH_GCC_VER}}
export PIE_GCC_VER=${PIE_GCC_VER:-${GCC_RELEASE_VER}}
export HTB_GCC_VER=${HTB_GCC_VER:-${GCC_RELEASE_VER}}
export SPECS_GCC_VER=${SPECS_GCC_VER:-${GCC_RELEASE_VER}}
if [[ -n ${GCC_A_FAKEIT} ]] ; then
unpack ${GCC_A_FAKEIT}
elif [[ -n ${PRERELEASE} ]] ; then
unpack gcc-${PRERELEASE}.tar.bz2
elif [[ -n ${SNAPSHOT} ]] ; then
unpack gcc-${SNAPSHOT}.tar.bz2
elif [[ ${PV} != *9999* ]] ; then
unpack gcc-${GCC_RELEASE_VER}.tar.bz2
# We want branch updates to be against a release tarball
if [[ -n ${BRANCH_UPDATE} ]] ; then
pushd "${S}" > /dev/null
epatch "${DISTDIR}"/gcc-${GCC_RELEASE_VER}-branch-update-${BRANCH_UPDATE}.patch.bz2
popd > /dev/null
fi
fi
if [[ -n ${D_VER} ]] && use d ; then
pushd "${S}"/gcc > /dev/null
unpack gdc-${D_VER}-src.tar.bz2
cd ..
ebegin "Adding support for the D language"
./gcc/d/setup-gcc.sh >& "${T}"/dgcc.log
if ! eend $? ; then
eerror "The D gcc package failed to apply"
eerror "Please include this log file when posting a bug report:"
eerror " ${T}/dgcc.log"
die "failed to include the D language"
fi
popd > /dev/null
fi
[[ -n ${PATCH_VER} ]] && \
unpack gcc-${PATCH_GCC_VER}-patches-${PATCH_VER}.tar.bz2
[[ -n ${UCLIBC_VER} ]] && \
unpack gcc-${UCLIBC_GCC_VER}-uclibc-patches-${UCLIBC_VER}.tar.bz2
if want_pie ; then
if [[ -n ${PIE_CORE} ]] ; then
unpack ${PIE_CORE}
else
unpack gcc-${PIE_GCC_VER}-piepatches-v${PIE_VER}.tar.bz2
fi
[[ -n ${SPECS_VER} ]] && \
unpack gcc-${SPECS_GCC_VER}-specs-${SPECS_VER}.tar.bz2
fi
use_if_iuse boundschecking && unpack "bounds-checking-gcc-${HTB_GCC_VER}-${HTB_VER}.patch.bz2"
popd > /dev/null
}
do_gcc_HTB_patches() {
use_if_iuse boundschecking || return 0
# modify the bounds checking patch with a regression patch
epatch "${WORKDIR}/bounds-checking-gcc-${HTB_GCC_VER}-${HTB_VER}.patch"
BRANDING_GCC_PKGVERSION="${BRANDING_GCC_PKGVERSION}, HTB-${HTB_GCC_VER}-${HTB_VER}"
}
# do various updates to PIE logic
do_gcc_PIE_patches() {
want_pie || return 0
use vanilla && return 0
if tc_version_is_at_least 4.3.2; then
guess_patch_type_in_dir "${WORKDIR}"/piepatch/
EPATCH_MULTI_MSG="Applying pie patches ..." \
epatch "${WORKDIR}"/piepatch/
else
guess_patch_type_in_dir "${WORKDIR}"/piepatch/upstream
# corrects startfile/endfile selection and shared/static/pie flag usage
EPATCH_MULTI_MSG="Applying upstream pie patches ..." \
epatch "${WORKDIR}"/piepatch/upstream
# adds non-default pie support (rs6000)
EPATCH_MULTI_MSG="Applying non-default pie patches ..." \
epatch "${WORKDIR}"/piepatch/nondef
# adds default pie support (rs6000 too) if DEFAULT_PIE[_SSP] is defined
EPATCH_MULTI_MSG="Applying default pie patches ..." \
epatch "${WORKDIR}"/piepatch/def
fi
# we want to be able to control the pie patch logic via something other
# than ALL_CFLAGS...
sed -e '/^ALL_CFLAGS/iHARD_CFLAGS = ' \
-e 's|^ALL_CFLAGS = |ALL_CFLAGS = $(HARD_CFLAGS) |' \
-i "${S}"/gcc/Makefile.in
# Need to add HARD_CFLAGS to ALL_CXXFLAGS on >= 4.7
if tc_version_is_at_least 4.7.0 ; then
sed -e '/^ALL_CXXFLAGS/iHARD_CFLAGS = ' \
-e 's|^ALL_CXXFLAGS = |ALL_CXXFLAGS = $(HARD_CFLAGS) |' \
-i "${S}"/gcc/Makefile.in
fi
BRANDING_GCC_PKGVERSION="${BRANDING_GCC_PKGVERSION}, pie-${PIE_VER}"
}
should_we_gcc_config() {
# we always want to run gcc-config if we're bootstrapping, otherwise
# we might get stuck with the c-only stage1 compiler
use_if_iuse bootstrap && return 0
use build && return 0
# if the current config is invalid, we definitely want a new one
# Note: due to bash quirkiness, the following must not be 1 line
local curr_config
curr_config=$(env -i ROOT="${ROOT}" gcc-config -c ${CTARGET} 2>&1) || return 0
# if the previously selected config has the same major.minor (branch) as
# the version we are installing, then it will probably be uninstalled
# for being in the same SLOT, make sure we run gcc-config.
local curr_config_ver=$(env -i ROOT="${ROOT}" gcc-config -S ${curr_config} | awk '{print $2}')
local curr_branch_ver=$(get_version_component_range 1-2 ${curr_config_ver})
# If we're using multislot, just run gcc-config if we're installing
# to the same profile as the current one.
use multislot && return $([[ ${curr_config_ver} == ${GCC_CONFIG_VER} ]])
if [[ ${curr_branch_ver} == ${GCC_BRANCH_VER} ]] ; then
return 0
else
# if we're installing a genuinely different compiler version,
# we should probably tell the user -how- to switch to the new
# gcc version, since we're not going to do it for him/her.
# We don't want to switch from say gcc-3.3 to gcc-3.4 right in
# the middle of an emerge operation (like an 'emerge -e world'
# which could install multiple gcc versions).
einfo "The current gcc config appears valid, so it will not be"
einfo "automatically switched for you. If you would like to"
einfo "switch to the newly installed gcc version, do the"
einfo "following:"
echo
einfo "gcc-config ${CTARGET}-${GCC_CONFIG_VER}"
einfo "source /etc/profile"
echo
ebeep
return 1
fi
}
do_gcc_config() {
if ! should_we_gcc_config ; then
env -i ROOT="${ROOT}" gcc-config --use-old --force
return 0
fi
local current_gcc_config="" current_specs="" use_specs=""
current_gcc_config=$(env -i ROOT="${ROOT}" gcc-config -c ${CTARGET} 2>/dev/null)
if [[ -n ${current_gcc_config} ]] ; then
# figure out which specs-specific config is active
current_specs=$(gcc-config -S ${current_gcc_config} | awk '{print $3}')
[[ -n ${current_specs} ]] && use_specs=-${current_specs}
fi
if [[ -n ${use_specs} ]] && \
[[ ! -e ${ROOT}/etc/env.d/gcc/${CTARGET}-${GCC_CONFIG_VER}${use_specs} ]]
then
ewarn "The currently selected specs-specific gcc config,"
ewarn "${current_specs}, doesn't exist anymore. This is usually"
ewarn "due to enabling/disabling hardened or switching to a version"
ewarn "of gcc that doesnt create multiple specs files. The default"
ewarn "config will be used, and the previous preference forgotten."
ebeep
epause
use_specs=""
fi
gcc-config ${CTARGET}-${GCC_CONFIG_VER}${use_specs}
}
# This function allows us to gentoo-ize gcc's version number and bugzilla
# URL without needing to use patches.
gcc_version_patch() {
# gcc-4.3+ has configure flags (whoo!)
tc_version_is_at_least 4.3 && return 0
local version_string=${GCC_CONFIG_VER}
[[ -n ${BRANCH_UPDATE} ]] && version_string+=" ${BRANCH_UPDATE}"
einfo "patching gcc version: ${version_string} (${BRANDING_GCC_PKGVERSION})"
local gcc_sed=( -e 's:gcc\.gnu\.org/bugs\.html:bugs\.gentoo\.org/:' )
if grep -qs VERSUFFIX "${S}"/gcc/version.c ; then
gcc_sed+=( -e "/VERSUFFIX \"\"/s:\"\":\" (${BRANDING_GCC_PKGVERSION})\":" )
else
version_string="${version_string} (${BRANDING_GCC_PKGVERSION})"
gcc_sed+=( -e "/const char version_string\[\] = /s:= \".*\":= \"${version_string}\":" )
fi
sed -i "${gcc_sed[@]}" "${S}"/gcc/version.c || die
}
# This is a historical wart. The original Gentoo/amd64 port used:
# lib32 - 32bit binaries (x86)
# lib64 - 64bit binaries (x86_64)
# lib - "native" binaries (a symlink to lib64)
# Most other distros use the logic (including mainline gcc):
# lib - 32bit binaries (x86)
# lib64 - 64bit binaries (x86_64)
# Over time, Gentoo is migrating to the latter form.
#
# Unfortunately, due to distros picking the lib32 behavior, newer gcc
# versions will dynamically detect whether to use lib or lib32 for its
# 32bit multilib. So, to keep the automagic from getting things wrong
# while people are transitioning from the old style to the new style,
# we always set the MULTILIB_OSDIRNAMES var for relevant targets.
setup_multilib_osdirnames() {
is_multilib || return 0
local config
local libdirs="../lib64 ../lib32"
# this only makes sense for some Linux targets
case ${CTARGET} in
x86_64*-linux*) config="i386" ;;
powerpc64*-linux*) config="rs6000" ;;
sparc64*-linux*) config="sparc" ;;
s390x*-linux*) config="s390" ;;
*) return 0 ;;
esac
config+="/t-linux64"
if [[ ${SYMLINK_LIB} == "yes" ]] ; then
einfo "updating multilib directories to be: ${libdirs}"
if tc_version_is_at_least 4.7 ; then
set -- -e '/^MULTILIB_OSDIRNAMES.*lib32/s:[$][(]if.*):../lib32:'
else
set -- -e "/^MULTILIB_OSDIRNAMES/s:=.*:= ${libdirs}:"
fi
else
einfo "using upstream multilib; disabling lib32 autodetection"
set -- -r -e 's:[$][(]if.*,(.*)[)]:\1:'
fi
sed -i "$@" "${S}"/gcc/config/${config} || die
}
disable_multilib_libjava() {
# We dont want a multilib libjava, so lets use this hack taken from fedora
sed -i -r \
-e 's/^((all:) all-redirect)/ifeq (\$(MULTISUBDIR),)\n\1\nelse\n\2\n\techo Multilib libjava disabled\nendif/' \
-e 's/^((install:) install-redirect)/ifeq (\$(MULTISUBDIR),)\n\1\nelse\n\2\n\techo Multilib libjava disabled\nendif/' \
-e 's/^((check:) check-redirect)/ifeq (\$(MULTISUBDIR),)\n\1\nelse\n\2\n\techo Multilib libjava disabled\nendif/' \
-e 's/^((all:) all-recursive)/ifeq (\$(MULTISUBDIR),)\n\1\nelse\n\2\n\techo Multilib libjava disabled\nendif/' \
-e 's/^((install:) install-recursive)/ifeq (\$(MULTISUBDIR),)\n\1\nelse\n\2\n\techo Multilib libjava disabled\nendif/' \
-e 's/^((check:) check-recursive)/ifeq (\$(MULTISUBDIR),)\n\1\nelse\n\2\n\techo Multilib libjava disabled\nendif/' \
"${S}"/libjava/Makefile.in || die
}
# make sure the libtool archives have libdir set to where they actually
# -are-, and not where they -used- to be. also, any dependencies we have
# on our own .la files need to be updated.
fix_libtool_libdir_paths() {
pushd "${D}" >/dev/null
pushd "./${1}" >/dev/null
local dir="${PWD#${D%/}}"
local allarchives=$(echo *.la)
allarchives="\(${allarchives// /\\|}\)"
popd >/dev/null
sed -i \
-e "/^libdir=/s:=.*:='${dir}':" \
./${dir}/*.la
sed -i \
-e "/^dependency_libs=/s:/[^ ]*/${allarchives}:${LIBPATH}/\1:g" \
$(find ./${PREFIX}/lib* -maxdepth 3 -name '*.la') \
./${dir}/*.la
popd >/dev/null
}
is_multilib() {
tc_version_is_at_least 3 || return 1
use multilib
}
is_cxx() {
gcc-lang-supported 'c++' || return 1
use cxx
}
is_d() {
gcc-lang-supported d || return 1
use_if_iuse d
}
is_f77() {
gcc-lang-supported f77 || return 1
use fortran
}
is_f95() {
gcc-lang-supported f95 || return 1
use fortran
}
is_fortran() {
gcc-lang-supported fortran || return 1
use fortran
}
is_gcj() {
gcc-lang-supported java || return 1
use cxx && use_if_iuse gcj
}
is_go() {
gcc-lang-supported go || return 1
use cxx && use_if_iuse go
}
is_objc() {
gcc-lang-supported objc || return 1
use_if_iuse objc
}
is_objcxx() {
gcc-lang-supported 'obj-c++' || return 1
use cxx && use_if_iuse objc++
}
is_ada() {
gcc-lang-supported ada || return 1
use ada
}
is_treelang() {
use_if_iuse boundschecking && return 1 #260532
is_crosscompile && return 1 #199924
gcc-lang-supported treelang || return 1
#use treelang
return 0
}
# should kill these off once all the ebuilds are migrated
gcc_pkg_setup() { toolchain_pkg_setup ; }
gcc_src_unpack() { toolchain_src_unpack ; }
gcc_src_compile() { toolchain_src_compile ; }
gcc_src_test() { toolchain_src_test ; }
[-- Attachment #3: toolchain.eclass.patch --]
[-- Type: text/x-patch, Size: 404 bytes --]
--- toolchain.eclass.orig 2012-10-01 02:31:14.000000000 -0300
+++ toolchain.eclass 2012-10-30 01:03:35.523023216 -0300
@@ -947,6 +947,11 @@
then
confgcc+=" --with-arch=${arm_arch}"
fi
+
+ # If arch is armv7-m, use thumb mode only.
+ if [[ ${arm_arch} == "armv7-m" ]] ; then
+ confgcc+=" --with-mode=thumb"
+ fi
# Enable hardvfp
if [[ $(tc-is-softfloat) == "no" ]] && \
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [gentoo-embedded] Crossdev and arm-none-eabi and armv7m-none-eabi toolchain builds.
2012-11-02 4:19 [gentoo-embedded] Crossdev and arm-none-eabi and armv7m-none-eabi toolchain builds "Pablo Pölcher"
@ 2012-11-02 12:13 ` Markos Chandras
2012-11-02 14:15 ` "Pablo Pölcher"
2012-11-02 21:46 ` Mike Frysinger
1 sibling, 1 reply; 4+ messages in thread
From: Markos Chandras @ 2012-11-02 12:13 UTC (permalink / raw
To: gentoo-embedded
On Fri, Nov 2, 2012 at 4:19 AM, "Pablo Pölcher" <talosds@gmx.de> wrote:
> Hello,
>
> this is my first post in this list, so please forgive any mistakes I may be doing here.
>
> I have been recently trying to compile a toolchain for the NXP LPC17xx
> microcontroller series using crossdev and came across a series of
> problems, which I have solved to a certain extent and wanted to share them in case somebody is interested.
>
> The CHOST I was trying to (and could finally) build for is «armv7m-none-eabi» (by running crossdev -t armv7m-none-eabi -s4 --ex-gdb). The main problem I encountered is that I couldn't get a stage1 gcc built. The build log would always end with the error message:
>
> «configure: error: cannot compute suffix of object files: cannot compile»
>
> After poking among the different log files, I found out that the problem
> was that the compiler was being asked to generate ARM code for a Thumb-only microcontroller, to what gcc would simply exit with the error code:
>
> «Error: Target CPU does not support ARM mode»
>
> So I traced back the generation of the argument list for the configure script back to toolchain.eclass, wrote a little patch and bingo! I could get past the annoying error. I just checked for the architecture to be armv7-m and added the --with-mode=thumb switch. There's an additional case to consider, and that is the armv6m architectures, but since I haven't tried them, yet, I haven't tested it nor included them in my patch.
>
> Anyway, once I got through this first problem, I had trouble again while compiling the stage3 gcc. Poking around a bit more, I found out that if the openmp USE flag is set, the gcc ebuild will try to build libgomp, even if no support for pthreads is present (as is the case with my newlib-based toolchain), so I could get around by disabling openmp during crossdev execution, but I guess this could also go as a toolchain.eclass patch.
>
> One more thing is that I couldn't see any place where the use of the multilib USE flag is recommended when compiling newlib, but still I found
> it useful.
>
> And one last thing I noticed (but couldn't get to solve, yet) is that I could never get crossdev to generate thumb code when compiling newlib for the «arm-none-eabi» CHOST, even if I pass the multilib USE flag. I tried tweaking several things, but I guess I should take a longer while to trace
> the error (feature?) and fix it. The crt0.o in /usr/arm-none-eabi/lib/thumb/ looks like this:
>
> 00000000 <_mainCRTStartup>:
> 0: e3b00016 movs r0, #22
> 4: e28f10e8 add r1, pc, #232 ; 0xe8
> 8: ef123456 svc 0x00123456
> c: e59f00e0 ldr r0, [pc, #224] ; f4 <change_back+0x4>
> 10: e5901000 ldr r1, [r0]
> 14: e3510000 cmp r1, #0
> ...
>
> As you can see, it's ARM code. The armv7m-none-eabi version of crt0.o in
> the thumb directory looks like:
>
> 00000000 <_mainCRTStartup>:
> 0: 2016 movs r0, #22
> 2: a12d add r1, pc, #180 ; (adr r1, b8 <_mainCRTStartup+0xb8>)
> 4: beab bkpt 0x00ab
> 6: 482c ldr r0, [pc, #176] ; (b8 <_mainCRTStartup+0xb8>)
> 8: 6801 ldr r1, [r0, #0]
> a: 2900 cmp r1, #0
>
> Nice Thumb code. I found out this while pulling my hair off trying to find out why my nicely compiled code would throw a double hardfault on an LPC1765. I was using the arm-none-eabi toolchain, then. Once I switched to
> the armv7m one, everything was solved.
>
> Anyway, I hope this helps somebody somehow, and I'm sorry if you already
> knew about all this.
>
> Best regards,
> Pablo Pölcher
Hi Pablo,
I'd say that patches for portage eclasses should be attached on
bugzilla[1] as a new bug
[1]: https://bugs.gentoo.org
--
Regards,
Markos Chandras / Gentoo Linux Developer / Key ID: B4AFF2C2
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [gentoo-embedded] Crossdev and arm-none-eabi and armv7m-none-eabi toolchain builds.
2012-11-02 12:13 ` Markos Chandras
@ 2012-11-02 14:15 ` "Pablo Pölcher"
0 siblings, 0 replies; 4+ messages in thread
From: "Pablo Pölcher" @ 2012-11-02 14:15 UTC (permalink / raw
To: gentoo-embedded
-------- Original-Nachricht --------
> Datum: Fri, 2 Nov 2012 12:13:45 +0000
> Von: Markos Chandras <hwoarang@gentoo.org>
> An: gentoo-embedded@lists.gentoo.org
> Betreff: Re: [gentoo-embedded] Crossdev and arm-none-eabi and armv7m-none-eabi toolchain builds.
> On Fri, Nov 2, 2012 at 4:19 AM, "Pablo Pölcher" <talosds@gmx.de> wrote:
> > Hello,
> >
> > this is my first post in this list, so please forgive any mistakes I may
> be doing here.
> >
> > I have been recently trying to compile a toolchain for the NXP LPC17xx
> > microcontroller series using crossdev and came across a series of
> > problems, which I have solved to a certain extent and wanted to share
> them in case somebody is interested.
> >
> > The CHOST I was trying to (and could finally) build for is
> «armv7m-none-eabi» (by running crossdev -t armv7m-none-eabi -s4 --ex-gdb). The main
> problem I encountered is that I couldn't get a stage1 gcc built. The build
> log would always end with the error message:
> >
> > «configure: error: cannot compute suffix of object files: cannot
> compile»
> >
> > After poking among the different log files, I found out that the problem
> > was that the compiler was being asked to generate ARM code for a
> Thumb-only microcontroller, to what gcc would simply exit with the error code:
> >
> > «Error: Target CPU does not support ARM mode»
> >
> > So I traced back the generation of the argument list for the configure
> script back to toolchain.eclass, wrote a little patch and bingo! I could get
> past the annoying error. I just checked for the architecture to be armv7-m
> and added the --with-mode=thumb switch. There's an additional case to
> consider, and that is the armv6m architectures, but since I haven't tried them,
> yet, I haven't tested it nor included them in my patch.
> >
> > Anyway, once I got through this first problem, I had trouble again while
> compiling the stage3 gcc. Poking around a bit more, I found out that if
> the openmp USE flag is set, the gcc ebuild will try to build libgomp, even if
> no support for pthreads is present (as is the case with my newlib-based
> toolchain), so I could get around by disabling openmp during crossdev
> execution, but I guess this could also go as a toolchain.eclass patch.
> >
> > One more thing is that I couldn't see any place where the use of the
> multilib USE flag is recommended when compiling newlib, but still I found
> > it useful.
> >
> > And one last thing I noticed (but couldn't get to solve, yet) is that I
> could never get crossdev to generate thumb code when compiling newlib for
> the «arm-none-eabi» CHOST, even if I pass the multilib USE flag. I tried
> tweaking several things, but I guess I should take a longer while to trace
> > the error (feature?) and fix it. The crt0.o in
> /usr/arm-none-eabi/lib/thumb/ looks like this:
> >
> > 00000000 <_mainCRTStartup>:
> > 0: e3b00016 movs r0, #22
> > 4: e28f10e8 add r1, pc, #232 ; 0xe8
> > 8: ef123456 svc 0x00123456
> > c: e59f00e0 ldr r0, [pc, #224] ; f4
> <change_back+0x4>
> > 10: e5901000 ldr r1, [r0]
> > 14: e3510000 cmp r1, #0
> > ...
> >
> > As you can see, it's ARM code. The armv7m-none-eabi version of crt0.o in
> > the thumb directory looks like:
> >
> > 00000000 <_mainCRTStartup>:
> > 0: 2016 movs r0, #22
> > 2: a12d add r1, pc, #180 ; (adr r1,
> b8 <_mainCRTStartup+0xb8>)
> > 4: beab bkpt 0x00ab
> > 6: 482c ldr r0, [pc, #176] ; (b8
> <_mainCRTStartup+0xb8>)
> > 8: 6801 ldr r1, [r0, #0]
> > a: 2900 cmp r1, #0
> >
> > Nice Thumb code. I found out this while pulling my hair off trying to
> find out why my nicely compiled code would throw a double hardfault on an
> LPC1765. I was using the arm-none-eabi toolchain, then. Once I switched to
> > the armv7m one, everything was solved.
> >
> > Anyway, I hope this helps somebody somehow, and I'm sorry if you already
> > knew about all this.
> >
> > Best regards,
> > Pablo Pölcher
>
> Hi Pablo,
>
> I'd say that patches for portage eclasses should be attached on
> bugzilla[1] as a new bug
>
> [1]: https://bugs.gentoo.org
>
> --
> Regards,
> Markos Chandras / Gentoo Linux Developer / Key ID: B4AFF2C2
>
Thank you, I'll do that.
Pablo
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [gentoo-embedded] Crossdev and arm-none-eabi and armv7m-none-eabi toolchain builds.
2012-11-02 4:19 [gentoo-embedded] Crossdev and arm-none-eabi and armv7m-none-eabi toolchain builds "Pablo Pölcher"
2012-11-02 12:13 ` Markos Chandras
@ 2012-11-02 21:46 ` Mike Frysinger
1 sibling, 0 replies; 4+ messages in thread
From: Mike Frysinger @ 2012-11-02 21:46 UTC (permalink / raw
To: gentoo-embedded
[-- Attachment #1: Type: Text/Plain, Size: 1412 bytes --]
On Friday 02 November 2012 00:19:58 Pablo Pölcher wrote:
> The CHOST I was trying to (and could finally) build for is
> «armv7m-none-eabi» (by running crossdev -t armv7m-none-eabi -s4 --ex-gdb).
> The main problem I encountered is that I couldn't get a stage1 gcc built.
> The build log would always end with the error message:
>
> «configure: error: cannot compute suffix of object files: cannot compile»
>
> After poking among the different log files, I found out that the problem
> was that the compiler was being asked to generate ARM code for a Thumb-only
> microcontroller, to what gcc would simply exit with the error code:
>
> «Error: Target CPU does not support ARM mode»
this looks like https://bugs.gentoo.org/418209 ... i'd post your patch as an
attachment to that bug.
> Anyway, once I got through this first problem, I had trouble again while
> compiling the stage3 gcc. Poking around a bit more, I found out that if
> the openmp USE flag is set, the gcc ebuild will try to build libgomp, even
> if no support for pthreads is present (as is the case with my newlib-based
> toolchain), so I could get around by disabling openmp during crossdev
> execution, but I guess this could also go as a toolchain.eclass patch.
this would be more appropriate as a patch to crossdev. probably want to
update parse_target and set GUSE=-openmp for newlib targets.
-mike
[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 836 bytes --]
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2012-11-03 0:03 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2012-11-02 4:19 [gentoo-embedded] Crossdev and arm-none-eabi and armv7m-none-eabi toolchain builds "Pablo Pölcher"
2012-11-02 12:13 ` Markos Chandras
2012-11-02 14:15 ` "Pablo Pölcher"
2012-11-02 21:46 ` Mike Frysinger
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