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Diffstat (limited to 'sys-libs/glibc/files/eblits/common.eblit')
-rw-r--r--sys-libs/glibc/files/eblits/common.eblit380
1 files changed, 380 insertions, 0 deletions
diff --git a/sys-libs/glibc/files/eblits/common.eblit b/sys-libs/glibc/files/eblits/common.eblit
new file mode 100644
index 0000000..e56f10e
--- /dev/null
+++ b/sys-libs/glibc/files/eblits/common.eblit
@@ -0,0 +1,380 @@
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+alt_prefix() {
+ is_crosscompile && echo /usr/${CTARGET}
+}
+
+if [[ ${EAPI:-0} == [012] ]] ; then
+ : ${ED:=${D}}
+ : ${EROOT:=${ROOT}}
+fi
+# This indirection is for binpkgs. #523332
+_nonfatal() { nonfatal "$@" ; }
+if [[ ${EAPI:-0} == [0123] ]] ; then
+ nonfatal() { "$@" ; }
+ _nonfatal() { "$@" ; }
+fi
+
+# We need to be able to set alternative headers for
+# compiling for non-native platform
+# Will also become useful for testing kernel-headers without screwing up
+# the whole system.
+# note: intentionally undocumented.
+alt_headers() {
+ echo ${ALT_HEADERS:=$(alt_prefix)/usr/include}
+}
+alt_build_headers() {
+ if [[ -z ${ALT_BUILD_HEADERS} ]] ; then
+ ALT_BUILD_HEADERS="${EPREFIX}$(alt_headers)"
+ if tc-is-cross-compiler ; then
+ ALT_BUILD_HEADERS=${SYSROOT}$(alt_headers)
+ if [[ ! -e ${ALT_BUILD_HEADERS}/linux/version.h ]] ; then
+ local header_path=$(echo '#include <linux/version.h>' | $(tc-getCPP ${CTARGET}) ${CFLAGS} 2>&1 | grep -o '[^"]*linux/version.h')
+ ALT_BUILD_HEADERS=${header_path%/linux/version.h}
+ fi
+ fi
+ fi
+ echo "${ALT_BUILD_HEADERS}"
+}
+
+alt_libdir() {
+ echo $(alt_prefix)/$(get_libdir)
+}
+alt_usrlibdir() {
+ echo $(alt_prefix)/usr/$(get_libdir)
+}
+
+builddir() {
+ echo "${WORKDIR}/build-${ABI}-${CTARGET}-$1"
+}
+
+setup_target_flags() {
+ # This largely mucks with compiler flags. None of which should matter
+ # when building up just the headers.
+ just_headers && return 0
+
+ case $(tc-arch) in
+ x86)
+ # -march needed for #185404 #199334
+ # TODO: When creating the first glibc cross-compile, this test will
+ # always fail as it does a full link which in turn requires glibc.
+ # Probably also applies when changing multilib profile settings (e.g.
+ # enabling x86 when the profile was amd64-only previously).
+ # We could change main to _start and pass -nostdlib here so that we
+ # only test the gcc code compilation. Or we could do a compile and
+ # then look for the symbol via scanelf.
+ if ! glibc_compile_test "" 'void f(int i, void *p) {if (__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n' 2>/dev/null ; then
+ local t=${CTARGET_OPT:-${CTARGET}}
+ t=${t%%-*}
+ filter-flags '-march=*'
+ export CFLAGS="-march=${t} ${CFLAGS}"
+ einfo "Auto adding -march=${t} to CFLAGS #185404"
+ fi
+ ;;
+ amd64)
+ # -march needed for #185404 #199334
+ # Note: This test only matters when the x86 ABI is enabled, so we could
+ # optimize a bit and elide it.
+ # TODO: See cross-compile issues listed above for x86.
+ if ! glibc_compile_test "${CFLAGS_x86}" 'void f(int i, void *p) {if (__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n' 2>/dev/null ; then
+ local t=${CTARGET_OPT:-${CTARGET}}
+ t=${t%%-*}
+ # Normally the target is x86_64-xxx, so turn that into the -march that
+ # gcc actually accepts. #528708
+ [[ ${t} == "x86_64" ]] && t="x86-64"
+ filter-flags '-march=*'
+ # ugly, ugly, ugly. ugly.
+ CFLAGS_x86=$(CFLAGS=${CFLAGS_x86} filter-flags '-march=*'; echo "${CFLAGS}")
+ export CFLAGS_x86="${CFLAGS_x86} -march=${t}"
+ einfo "Auto adding -march=${t} to CFLAGS_x86 #185404"
+ fi
+ ;;
+ mips)
+ # The mips abi cannot support the GNU style hashes. #233233
+ filter-ldflags -Wl,--hash-style=gnu -Wl,--hash-style=both
+ ;;
+ ppc)
+ append-flags "-freorder-blocks"
+ ;;
+ sparc)
+ # Both sparc and sparc64 can use -fcall-used-g6. -g7 is bad, though.
+ filter-flags "-fcall-used-g7"
+ append-flags "-fcall-used-g6"
+
+ # If the CHOST is the basic one (e.g. not sparcv9-xxx already),
+ # try to pick a better one so glibc can use cpu-specific .S files.
+ # We key off the CFLAGS to get a good value. Also need to handle
+ # version skew.
+ # We can't force users to set their CHOST to their exact machine
+ # as many of these are not recognized by config.sub/gcc and such :(.
+ # Note: If the mcpu values don't scale, we might try probing CPP defines.
+ # Note: Should we factor in -Wa,-AvXXX flags too ? Or -mvis/etc... ?
+
+ local cpu
+ case ${CTARGET} in
+ sparc64-*)
+ case $(get-flag mcpu) in
+ niagara[234])
+ if version_is_at_least 2.8 ; then
+ cpu="sparc64v2"
+ elif version_is_at_least 2.4 ; then
+ cpu="sparc64v"
+ elif version_is_at_least 2.2.3 ; then
+ cpu="sparc64b"
+ fi
+ ;;
+ niagara)
+ if version_is_at_least 2.4 ; then
+ cpu="sparc64v"
+ elif version_is_at_least 2.2.3 ; then
+ cpu="sparc64b"
+ fi
+ ;;
+ ultrasparc3)
+ cpu="sparc64b"
+ ;;
+ *)
+ # We need to force at least v9a because the base build doesn't
+ # work with just v9.
+ # https://sourceware.org/bugzilla/show_bug.cgi?id=19477
+ [[ -z ${cpu} ]] && append-flags "-Wa,-xarch=v9a"
+ ;;
+ esac
+ ;;
+ sparc-*)
+ case $(get-flag mcpu) in
+ niagara[234])
+ if version_is_at_least 2.8 ; then
+ cpu="sparcv9v2"
+ elif version_is_at_least 2.4 ; then
+ cpu="sparcv9v"
+ elif version_is_at_least 2.2.3 ; then
+ cpu="sparcv9b"
+ else
+ cpu="sparcv9"
+ fi
+ ;;
+ niagara)
+ if version_is_at_least 2.4 ; then
+ cpu="sparcv9v"
+ elif version_is_at_least 2.2.3 ; then
+ cpu="sparcv9b"
+ else
+ cpu="sparcv9"
+ fi
+ ;;
+ ultrasparc3)
+ cpu="sparcv9b"
+ ;;
+ v9|ultrasparc)
+ cpu="sparcv9"
+ ;;
+ v8|supersparc|hypersparc|leon|leon3)
+ cpu="sparcv8"
+ ;;
+ esac
+ ;;
+ esac
+ [[ -n ${cpu} ]] && CTARGET_OPT="${cpu}-${CTARGET#*-}"
+ ;;
+ esac
+}
+
+setup_flags() {
+ # Make sure host make.conf doesn't pollute us
+ if is_crosscompile || tc-is-cross-compiler ; then
+ CHOST=${CTARGET} strip-unsupported-flags
+ fi
+
+ # Store our CFLAGS because it's changed depending on which CTARGET
+ # we are building when pulling glibc on a multilib profile
+ CFLAGS_BASE=${CFLAGS_BASE-${CFLAGS}}
+ CFLAGS=${CFLAGS_BASE}
+ CXXFLAGS_BASE=${CXXFLAGS_BASE-${CXXFLAGS}}
+ CXXFLAGS=${CXXFLAGS_BASE}
+ ASFLAGS_BASE=${ASFLAGS_BASE-${ASFLAGS}}
+ ASFLAGS=${ASFLAGS_BASE}
+
+ # Over-zealous CFLAGS can often cause problems. What may work for one
+ # person may not work for another. To avoid a large influx of bugs
+ # relating to failed builds, we strip most CFLAGS out to ensure as few
+ # problems as possible.
+ strip-flags
+ strip-unsupported-flags
+ filter-flags -m32 -m64 -mabi=*
+
+ # Bug 492892.
+ filter-flags -frecord-gcc-switches
+
+ unset CBUILD_OPT CTARGET_OPT
+ if use multilib ; then
+ CTARGET_OPT=$(get_abi_CTARGET)
+ [[ -z ${CTARGET_OPT} ]] && CTARGET_OPT=$(get_abi_CHOST)
+ fi
+
+ setup_target_flags
+
+ if [[ -n ${CTARGET_OPT} && ${CBUILD} == ${CHOST} ]] && ! is_crosscompile; then
+ CBUILD_OPT=${CTARGET_OPT}
+ fi
+
+ # Lock glibc at -O2 -- linuxthreads needs it and we want to be
+ # conservative here. -fno-strict-aliasing is to work around #155906
+ filter-flags -O?
+ append-flags -O2 -fno-strict-aliasing
+
+ # Can't build glibc itself with fortify code. Newer versions add
+ # this flag for us, so no need to do it manually.
+ version_is_at_least 2.16 ${PV} || append-cppflags -U_FORTIFY_SOURCE
+
+ # building glibc with SSP is fraught with difficulty, especially
+ # due to __stack_chk_fail_local which would mean significant changes
+ # to the glibc build process. See bug #94325 #293721
+ # Note we have to handle both user-given CFLAGS and gcc defaults via
+ # spec rules here. We can't simply add -fno-stack-protector as it gets
+ # added before user flags, and we can't just filter-flags because
+ # _filter_hardened doesn't support globs.
+ filter-flags -fstack-protector*
+ gcc-specs-ssp && append-flags $(test-flags -fno-stack-protector)
+
+ if use hardened && gcc-specs-pie ; then
+ # Force PIC macro definition for all compilations since they're all
+ # either -fPIC or -fPIE with the default-PIE compiler.
+ append-cppflags -DPIC
+ else
+ # Don't build -fPIE without the default-PIE compiler and the
+ # hardened-pie patch
+ filter-flags -fPIE
+ fi
+}
+
+want_nptl() {
+ [[ -z ${LT_VER} ]] && return 0
+ want_tls || return 1
+ use nptl || return 1
+
+ # Older versions of glibc had incomplete arch support for nptl.
+ # But if you're building those now, you can handle USE=nptl yourself.
+ return 0
+}
+
+want_linuxthreads() {
+ [[ -z ${LT_VER} ]] && return 1
+ use linuxthreads
+}
+
+want_tls() {
+ # Archs that can use TLS (Thread Local Storage)
+ case $(tc-arch) in
+ x86)
+ # requires i486 or better #106556
+ [[ ${CTARGET} == i[4567]86* ]] && return 0
+ return 1
+ ;;
+ esac
+
+ return 0
+}
+
+want__thread() {
+ want_tls || return 1
+
+ # For some reason --with-tls --with__thread is causing segfaults on sparc32.
+ [[ ${PROFILE_ARCH} == "sparc" ]] && return 1
+
+ [[ -n ${WANT__THREAD} ]] && return ${WANT__THREAD}
+
+ # only test gcc -- cant test linking yet
+ tc-has-tls -c ${CTARGET}
+ WANT__THREAD=$?
+
+ return ${WANT__THREAD}
+}
+
+use_multiarch() {
+ # Make sure binutils is new enough to support indirect functions #336792
+ # This funky sed supports gold and bfd linkers.
+ local bver nver
+ bver=$($(tc-getLD ${CTARGET}) -v | sed -n -r '1{s:[^0-9]*::;s:^([0-9.]*).*:\1:;p}')
+ case $(tc-arch ${CTARGET}) in
+ amd64|x86) nver="2.20" ;;
+ arm) nver="2.22" ;;
+ hppa) nver="2.23" ;;
+ ppc|ppc64) nver="2.20" ;;
+ # ifunc was added in 2.23, but glibc also needs machinemode which is in 2.24.
+ s390) nver="2.24" ;;
+ sparc) nver="2.21" ;;
+ *) return 1 ;;
+ esac
+ version_is_at_least ${nver} ${bver}
+}
+
+# Setup toolchain variables that had historically
+# been defined in the profiles for these archs.
+setup_env() {
+ # silly users
+ unset LD_RUN_PATH
+ unset LD_ASSUME_KERNEL
+
+ multilib_env ${CTARGET_OPT:-${CTARGET}}
+ if is_crosscompile || tc-is-cross-compiler ; then
+ if ! use multilib ; then
+ MULTILIB_ABIS=${DEFAULT_ABI}
+ else
+ MULTILIB_ABIS=${MULTILIB_ABIS:-${DEFAULT_ABI}}
+ fi
+
+ # If the user has CFLAGS_<CTARGET> in their make.conf, use that,
+ # and fall back on CFLAGS.
+ local VAR=CFLAGS_${CTARGET//[-.]/_}
+ CFLAGS=${!VAR-${CFLAGS}}
+ fi
+
+ setup_flags
+
+ export ABI=${ABI:-${DEFAULT_ABI:-default}}
+
+ local VAR=CFLAGS_${ABI}
+ # We need to export CFLAGS with abi information in them because glibc's
+ # configure script checks CFLAGS for some targets (like mips). Keep
+ # around the original clean value to avoid appending multiple ABIs on
+ # top of each other.
+ : ${__GLIBC_CC:=$(tc-getCC ${CTARGET_OPT:-${CTARGET}})}
+ export __GLIBC_CC CC="${__GLIBC_CC} ${!VAR}"
+}
+
+foreach_abi() {
+ setup_env
+
+ local ret=0
+ local abilist=""
+ if use multilib ; then
+ abilist=$(get_install_abis)
+ else
+ abilist=${DEFAULT_ABI}
+ fi
+ evar_push ABI
+ export ABI
+ for ABI in ${abilist:-default} ; do
+ setup_env
+ einfo "Running $1 for ABI ${ABI}"
+ $1
+ : $(( ret |= $? ))
+ done
+ evar_pop
+ return ${ret}
+}
+
+just_headers() {
+ is_crosscompile && use crosscompile_opts_headers-only
+}
+
+glibc_banner() {
+ local b="Gentoo ${PVR}"
+ [[ -n ${SNAP_VER} ]] && b+=" snapshot ${SNAP_VER}"
+ [[ -n ${BRANCH_UPDATE} ]] && b+=" branch ${BRANCH_UPDATE}"
+ [[ -n ${PATCH_VER} ]] && ! use vanilla && b+=" p${PATCH_VER}"
+ echo "${b}"
+}