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# Copyright 1999-2012 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.174 2012/06/05 02:07:44 dirtyepic Exp $
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# @ECLASS: flag-o-matic.eclass
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# @MAINTAINER:
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# toolchain@gentoo.org
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# @BLURB: common functions to manipulate and query toolchain flags
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# @DESCRIPTION:
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# This eclass contains a suite of functions to help developers sanely
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# and safely manage toolchain flags in their builds.
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if [[ ${___ECLASS_ONCE_FLAG_O_MATIC} != "recur -_+^+_- spank" ]] ; then
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___ECLASS_ONCE_FLAG_O_MATIC="recur -_+^+_- spank"
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inherit eutils toolchain-funcs multilib
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# Return all the flag variables that our high level funcs operate on.
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all-flag-vars() {
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echo {C,CPP,CXX,CCAS,F,FC,LD}FLAGS
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}
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# {C,CXX,F,FC}FLAGS that we allow in strip-flags
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# Note: shell globs and character lists are allowed
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setup-allowed-flags() {
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ALLOWED_FLAGS="-pipe"
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ALLOWED_FLAGS+=" -O -O1 -O2 -Os -mcpu -march -mtune"
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ALLOWED_FLAGS+=" -fstack-protector -fstack-protector-all"
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ALLOWED_FLAGS+=" -fbounds-checking -fno-strict-overflow"
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ALLOWED_FLAGS+=" -fno-PIE -fno-pie -fno-unit-at-a-time"
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ALLOWED_FLAGS+=" -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+"
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ALLOWED_FLAGS+=" -fno-ident -fpermissive"
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ALLOWED_FLAGS+=" -W* -w"
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# allow a bunch of flags that negate features / control ABI
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ALLOWED_FLAGS+=" -fno-stack-protector -fno-stack-protector-all \
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-fno-strict-aliasing -fno-bounds-checking -fstrict-overflow \
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-fno-omit-frame-pointer"
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ALLOWED_FLAGS+=" -mregparm -mno-app-regs -mapp-regs -mno-mmx -mno-sse \
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-mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 -mno-sse4.2 \
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-mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow -mno-popcnt \
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-mno-abm -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -mplt \
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-msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
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-mieee -mieee-with-inexact -mschedule -mfloat-gprs -mspe -mno-spe \
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-mtls-direct-seg-refs -mno-tls-direct-seg-refs -mflat -mno-flat \
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-mno-faster-structs -mfaster-structs -m32 -m64 -mx32 -mabi \
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-mlittle-endian -mbig-endian -EL -EB -fPIC -mlive-g0 -mcmodel \
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-mstack-bias -mno-stack-bias -msecure-plt -m*-toc -mfloat-abi=* \
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-D* -U*"
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# 4.5
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ALLOWED_FLAGS+=" -mno-fma4 -mno-movbe -mno-xop -mno-lwp"
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# 4.6
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ALLOWED_FLAGS+=" -mno-fsgsbase -mno-rdrnd -mno-f16c -mno-bmi -mno-tbm"
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# 4.7
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ALLOWED_FLAGS+=" -mno-avx2 -mno-bmi2 -mno-fma -mno-lzcnt"
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export ALLOWED_FLAGS
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return 0
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}
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# inverted filters for hardened compiler. This is trying to unpick
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# the hardened compiler defaults.
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_filter-hardened() {
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local f
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for f in "$@" ; do
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case "${f}" in
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# Ideally we should only concern ourselves with PIE flags,
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# not -fPIC or -fpic, but too many places filter -fPIC without
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# thinking about -fPIE.
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-fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
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gcc-specs-pie || continue
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is-flagq -nopie || append-flags -nopie;;
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-fstack-protector)
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gcc-specs-ssp || continue
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is-flagq -fno-stack-protector || append-flags $(test-flags -fno-stack-protector);;
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-fstack-protector-all)
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gcc-specs-ssp-to-all || continue
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is-flagq -fno-stack-protector-all || append-flags $(test-flags -fno-stack-protector-all);;
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-fno-strict-overflow)
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gcc-specs-nostrict || continue
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is-flagq -fstrict-overflow || append-flags $(test-flags -fstrict-overflow);;
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esac
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done
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}
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# Remove occurrences of strings from variable given in $1
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# Strings removed are matched as globs, so for example
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# '-O*' would remove -O1, -O2 etc.
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_filter-var() {
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local f x var=$1 new=()
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shift
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for f in ${!var} ; do
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for x in "$@" ; do
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# Note this should work with globs like -O*
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[[ ${f} == ${x} ]] && continue 2
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done
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new+=( "${f}" )
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done
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eval export ${var}=\""${new[*]}"\"
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}
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# @FUNCTION: filter-flags
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# @USAGE: <flags>
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# @DESCRIPTION:
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# Remove particular <flags> from {C,CPP,CXX,CCAS,F,FC,LD}FLAGS. Accepts shell globs.
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filter-flags() {
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_filter-hardened "$@"
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local v
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for v in $(all-flag-vars) ; do
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_filter-var ${v} "$@"
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done
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return 0
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}
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# @FUNCTION: filter-lfs-flags
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# @DESCRIPTION:
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# Remove flags that enable Large File Support.
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filter-lfs-flags() {
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[[ $# -ne 0 ]] && die "filter-lfs-flags takes no arguments"
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# http://www.gnu.org/s/libc/manual/html_node/Feature-Test-Macros.html
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# _LARGEFILE_SOURCE: enable support for new LFS funcs (ftello/etc...)
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# _LARGEFILE64_SOURCE: enable support for 64bit variants (off64_t/fseeko64/etc...)
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# _FILE_OFFSET_BITS: default to 64bit variants (off_t is defined as off64_t)
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filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
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}
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# @FUNCTION: filter-ldflags
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# @USAGE: <flags>
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# @DESCRIPTION:
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# Remove particular <flags> from LDFLAGS. Accepts shell globs.
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filter-ldflags() {
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_filter-var LDFLAGS "$@"
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return 0
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}
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# @FUNCTION: append-cppflags
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# @USAGE: <flags>
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# @DESCRIPTION:
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# Add extra <flags> to the current CPPFLAGS.
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append-cppflags() {
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[[ $# -eq 0 ]] && return 0
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export CPPFLAGS="${CPPFLAGS} $*"
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return 0
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}
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# @FUNCTION: append-cflags
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# @USAGE: <flags>
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# @DESCRIPTION:
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# Add extra <flags> to the current CFLAGS.
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append-cflags() {
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[[ $# -eq 0 ]] && return 0
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export CFLAGS=$(test-flags-CC ${CFLAGS} "$@")
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return 0
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}
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# @FUNCTION: append-cxxflags
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# @USAGE: <flags>
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# @DESCRIPTION:
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# Add extra <flags> to the current CXXFLAGS.
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append-cxxflags() {
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[[ $# -eq 0 ]] && return 0
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export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS} "$@")
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return 0
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}
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# @FUNCTION: append-fflags
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# @USAGE: <flags>
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# @DESCRIPTION:
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# Add extra <flags> to the current {F,FC}FLAGS.
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append-fflags() {
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[[ $# -eq 0 ]] && return 0
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export FFLAGS=$(test-flags-F77 ${FFLAGS} "$@")
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export FCFLAGS=$(test-flags-FC ${FCFLAGS} "$@")
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return 0
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}
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# @FUNCTION: append-lfs-flags
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# @DESCRIPTION:
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# Add flags that enable Large File Support.
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append-lfs-flags() {
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[[ $# -ne 0 ]] && die "append-lfs-flags takes no arguments"
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# see comments in filter-lfs-flags func for meaning of these
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append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
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}
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# @FUNCTION: append-ldflags
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# @USAGE: <flags>
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# @DESCRIPTION:
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# Add extra <flags> to the current LDFLAGS.
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append-ldflags() {
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[[ $# -eq 0 ]] && return 0
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local flag
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for flag in "$@"; do
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[[ ${flag} == -l* ]] && \
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ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS"
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done
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export LDFLAGS="${LDFLAGS} $*"
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return 0
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}
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# @FUNCTION: append-flags
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# @USAGE: <flags>
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# @DESCRIPTION:
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# Add extra <flags> to your current {C,CXX,F,FC}FLAGS.
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append-flags() {
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[[ $# -eq 0 ]] && return 0
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case " $* " in
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*' '-[DIU]*) eqawarn 'please use append-cppflags for preprocessor flags' ;;
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*' '-L*|\
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*' '-Wl,*) eqawarn 'please use append-ldflags for linker flags' ;;
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esac
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append-cflags "$@"
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append-cxxflags "$@"
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append-fflags "$@"
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return 0
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}
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# @FUNCTION: replace-flags
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# @USAGE: <old> <new>
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# @DESCRIPTION:
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# Replace the <old> flag with <new>. Accepts shell globs for <old>.
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replace-flags() {
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[[ $# != 2 ]] && die "Usage: replace-flags <old flag> <new flag>"
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local f var new
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for var in $(all-flag-vars) ; do
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# Looping over the flags instead of using a global
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# substitution ensures that we're working with flag atoms.
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# Otherwise globs like -O* have the potential to wipe out the
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# list of flags.
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new=()
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for f in ${!var} ; do
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# Note this should work with globs like -O*
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[[ ${f} == ${1} ]] && f=${2}
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new+=( "${f}" )
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done
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eval export ${var}=\""${new[*]}"\"
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done
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return 0
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}
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# @FUNCTION: replace-cpu-flags
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# @USAGE: <old> <new>
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# @DESCRIPTION:
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# Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu
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# with flags that select the <new> cpu. Accepts shell globs for <old>.
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replace-cpu-flags() {
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local newcpu="$#" ; newcpu="${!newcpu}"
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while [ $# -gt 1 ] ; do
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# quote to make sure that no globbing is done (particularly on
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# ${oldcpu}) prior to calling replace-flags
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replace-flags "-march=${1}" "-march=${newcpu}"
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replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
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replace-flags "-mtune=${1}" "-mtune=${newcpu}"
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shift
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done
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return 0
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}
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_is_flagq() {
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local x
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for x in ${!1} ; do
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[[ ${x} == $2 ]] && return 0
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done
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return 1
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}
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# @FUNCTION: is-flagq
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# @USAGE: <flag>
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# @DESCRIPTION:
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# Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs.
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is-flagq() {
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[[ -n $2 ]] && die "Usage: is-flag <flag>"
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local var
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for var in $(all-flag-vars) ; do
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_is_flagq ${var} "$1" && return 0
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done
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return 1
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}
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# @FUNCTION: is-flag
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# @USAGE: <flag>
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# @DESCRIPTION:
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# Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs.
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is-flag() {
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is-flagq "$@" && echo true
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}
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# @FUNCTION: is-ldflagq
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# @USAGE: <flag>
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# @DESCRIPTION:
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# Returns shell true if <flag> is in LDFLAGS, else returns shell false. Accepts shell globs.
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is-ldflagq() {
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[[ -n $2 ]] && die "Usage: is-ldflag <flag>"
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_is_flagq LDFLAGS $1
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}
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# @FUNCTION: is-ldflag
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# @USAGE: <flag>
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# @DESCRIPTION:
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# Echo's "true" if flag is set in LDFLAGS. Accepts shell globs.
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is-ldflag() {
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is-ldflagq "$@" && echo true
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}
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# @FUNCTION: filter-mfpmath
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# @USAGE: <math types>
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# @DESCRIPTION:
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# Remove specified math types from the fpmath flag. For example, if the user
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# has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with
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# -mfpmath=386.
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filter-mfpmath() {
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local orig_mfpmath new_math prune_math
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# save the original -mfpmath flag
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orig_mfpmath=$(get-flag -mfpmath)
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# get the value of the current -mfpmath flag
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new_math=$(get-flag mfpmath)
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new_math=" ${new_math//,/ } "
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# figure out which math values are to be removed
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prune_math=""
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for prune_math in "$@" ; do
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new_math=${new_math/ ${prune_math} / }
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done
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new_math=$(echo ${new_math})
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new_math=${new_math// /,}
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if [[ -z ${new_math} ]] ; then
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# if we're removing all user specified math values are
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# slated for removal, then we just filter the flag
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filter-flags ${orig_mfpmath}
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else
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# if we only want to filter some of the user specified
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# math values, then we replace the current flag
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replace-flags ${orig_mfpmath} -mfpmath=${new_math}
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fi
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return 0
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}
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# @FUNCTION: strip-flags
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# @DESCRIPTION:
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# Strip C[XX]FLAGS of everything except known good/safe flags.
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strip-flags() {
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local x y var
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setup-allowed-flags
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set -f # disable pathname expansion
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for var in $(all-flag-vars) ; do
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local new=()
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for x in ${!var} ; do
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local flag=${x%%=*}
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for y in ${ALLOWED_FLAGS} ; do
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if [[ -z ${flag%%${y}} ]] ; then
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new+=( "${x}" )
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break
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fi
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done
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done
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# In case we filtered out all optimization flags fallback to -O2
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if _is_flagq ${var} "-O*" && ! _is_flagq new "-O*" ; then
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new+=( -O2 )
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fi
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eval export ${var}=\""${new[*]}"\"
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done
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set +f # re-enable pathname expansion
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return 0
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}
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test-flag-PROG() {
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local comp=$1
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local flag=$2
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[[ -z ${comp} || -z ${flag} ]] && return 1
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# use -c so we can test the assembler as well
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local PROG=$(tc-get${comp})
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${PROG} "${flag}" -c -o /dev/null -xc /dev/null \
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> /dev/null 2>&1
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}
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| 392 |
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| 393 |
# @FUNCTION: test-flag-CC
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# @USAGE: <flag>
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# @DESCRIPTION:
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# Returns shell true if <flag> is supported by the C compiler, else returns shell false.
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test-flag-CC() { test-flag-PROG "CC" "$1"; }
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# @FUNCTION: test-flag-CXX
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| 400 |
# @USAGE: <flag>
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# @DESCRIPTION:
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# Returns shell true if <flag> is supported by the C++ compiler, else returns shell false.
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test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
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# @FUNCTION: test-flag-F77
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# @USAGE: <flag>
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# @DESCRIPTION:
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| 408 |
# Returns shell true if <flag> is supported by the Fortran 77 compiler, else returns shell false.
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test-flag-F77() { test-flag-PROG "F77" "$1"; }
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| 411 |
# @FUNCTION: test-flag-FC
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| 412 |
# @USAGE: <flag>
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| 413 |
# @DESCRIPTION:
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| 414 |
# Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false.
|
| 415 |
test-flag-FC() { test-flag-PROG "FC" "$1"; }
|
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| 417 |
test-flags-PROG() {
|
| 418 |
local comp=$1
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| 419 |
local flags
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| 420 |
local x
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| 421 |
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| 422 |
shift
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| 424 |
[[ -z ${comp} ]] && return 1
|
| 425 |
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| 426 |
for x in "$@" ; do
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| 427 |
test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
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| 428 |
done
|
| 429 |
|
| 430 |
echo "${flags}"
|
| 431 |
|
| 432 |
# Just bail if we dont have any flags
|
| 433 |
[[ -n ${flags} ]]
|
| 434 |
}
|
| 435 |
|
| 436 |
# @FUNCTION: test-flags-CC
|
| 437 |
# @USAGE: <flags>
|
| 438 |
# @DESCRIPTION:
|
| 439 |
# Returns shell true if <flags> are supported by the C compiler, else returns shell false.
|
| 440 |
test-flags-CC() { test-flags-PROG "CC" "$@"; }
|
| 441 |
|
| 442 |
# @FUNCTION: test-flags-CXX
|
| 443 |
# @USAGE: <flags>
|
| 444 |
# @DESCRIPTION:
|
| 445 |
# Returns shell true if <flags> are supported by the C++ compiler, else returns shell false.
|
| 446 |
test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
|
| 447 |
|
| 448 |
# @FUNCTION: test-flags-F77
|
| 449 |
# @USAGE: <flags>
|
| 450 |
# @DESCRIPTION:
|
| 451 |
# Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false.
|
| 452 |
test-flags-F77() { test-flags-PROG "F77" "$@"; }
|
| 453 |
|
| 454 |
# @FUNCTION: test-flags-FC
|
| 455 |
# @USAGE: <flags>
|
| 456 |
# @DESCRIPTION:
|
| 457 |
# Returns shell true if <flags> are supported by the Fortran 90 compiler, else returns shell false.
|
| 458 |
test-flags-FC() { test-flags-PROG "FC" "$@"; }
|
| 459 |
|
| 460 |
# @FUNCTION: test-flags
|
| 461 |
# @USAGE: <flags>
|
| 462 |
# @DESCRIPTION:
|
| 463 |
# Short-hand that should hopefully work for both C and C++ compiler, but
|
| 464 |
# its really only present due to the append-flags() abomination.
|
| 465 |
test-flags() { test-flags-CC "$@"; }
|
| 466 |
|
| 467 |
# @FUNCTION: test_version_info
|
| 468 |
# @USAGE: <version>
|
| 469 |
# @DESCRIPTION:
|
| 470 |
# Returns shell true if the current C compiler version matches <version>, else returns shell false.
|
| 471 |
# Accepts shell globs.
|
| 472 |
test_version_info() {
|
| 473 |
if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
|
| 474 |
return 0
|
| 475 |
else
|
| 476 |
return 1
|
| 477 |
fi
|
| 478 |
}
|
| 479 |
|
| 480 |
# @FUNCTION: strip-unsupported-flags
|
| 481 |
# @DESCRIPTION:
|
| 482 |
# Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain.
|
| 483 |
strip-unsupported-flags() {
|
| 484 |
export CFLAGS=$(test-flags-CC ${CFLAGS})
|
| 485 |
export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
|
| 486 |
export FFLAGS=$(test-flags-F77 ${FFLAGS})
|
| 487 |
export FCFLAGS=$(test-flags-FC ${FCFLAGS})
|
| 488 |
}
|
| 489 |
|
| 490 |
# @FUNCTION: get-flag
|
| 491 |
# @USAGE: <flag>
|
| 492 |
# @DESCRIPTION:
|
| 493 |
# Find and echo the value for a particular flag. Accepts shell globs.
|
| 494 |
get-flag() {
|
| 495 |
local f var findflag="$1"
|
| 496 |
|
| 497 |
# this code looks a little flaky but seems to work for
|
| 498 |
# everything we want ...
|
| 499 |
# for example, if CFLAGS="-march=i686":
|
| 500 |
# `get-flag -march` == "-march=i686"
|
| 501 |
# `get-flag march` == "i686"
|
| 502 |
for var in $(all-flag-vars) ; do
|
| 503 |
for f in ${!var} ; do
|
| 504 |
if [ "${f/${findflag}}" != "${f}" ] ; then
|
| 505 |
printf "%s\n" "${f/-${findflag}=}"
|
| 506 |
return 0
|
| 507 |
fi
|
| 508 |
done
|
| 509 |
done
|
| 510 |
return 1
|
| 511 |
}
|
| 512 |
|
| 513 |
# @FUNCTION: has_m64
|
| 514 |
# @DESCRIPTION:
|
| 515 |
# This doesn't test if the flag is accepted, it tests if the flag actually
|
| 516 |
# WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works
|
| 517 |
# return code is 0, else the return code is 1.
|
| 518 |
has_m64() {
|
| 519 |
eqawarn "${FUNCNAME}: don't use this anymore"
|
| 520 |
|
| 521 |
# this doesnt test if the flag is accepted, it tests if the flag
|
| 522 |
# actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
|
| 523 |
# please dont replace this function with test_flag in some future
|
| 524 |
# clean-up!
|
| 525 |
|
| 526 |
local temp="$(emktemp)"
|
| 527 |
echo "int main() { return(0); }" > "${temp}".c
|
| 528 |
MY_CC=$(tc-getCC)
|
| 529 |
${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
|
| 530 |
local ret=$?
|
| 531 |
rm -f "${temp}".c
|
| 532 |
[[ ${ret} != 1 ]] && return 0
|
| 533 |
return 1
|
| 534 |
}
|
| 535 |
|
| 536 |
has_m32() {
|
| 537 |
die "${FUNCNAME}: don't use this anymore"
|
| 538 |
}
|
| 539 |
|
| 540 |
# @FUNCTION: replace-sparc64-flags
|
| 541 |
# @DESCRIPTION:
|
| 542 |
# Sets mcpu to v8 and uses the original value as mtune if none specified.
|
| 543 |
replace-sparc64-flags() {
|
| 544 |
local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
|
| 545 |
|
| 546 |
if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
|
| 547 |
for x in ${SPARC64_CPUS}; do
|
| 548 |
CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
|
| 549 |
done
|
| 550 |
else
|
| 551 |
for x in ${SPARC64_CPUS}; do
|
| 552 |
CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
|
| 553 |
done
|
| 554 |
fi
|
| 555 |
|
| 556 |
if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
|
| 557 |
for x in ${SPARC64_CPUS}; do
|
| 558 |
CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
|
| 559 |
done
|
| 560 |
else
|
| 561 |
for x in ${SPARC64_CPUS}; do
|
| 562 |
CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
|
| 563 |
done
|
| 564 |
fi
|
| 565 |
|
| 566 |
export CFLAGS CXXFLAGS
|
| 567 |
}
|
| 568 |
|
| 569 |
# @FUNCTION: append-libs
|
| 570 |
# @USAGE: <libs>
|
| 571 |
# @DESCRIPTION:
|
| 572 |
# Add extra <libs> to the current LIBS.
|
| 573 |
append-libs() {
|
| 574 |
[[ $# -eq 0 ]] && return 0
|
| 575 |
local flag
|
| 576 |
for flag in "$@"; do
|
| 577 |
[[ ${flag} == -l* ]] && flag=${flag#-l}
|
| 578 |
export LIBS="${LIBS} -l${flag}"
|
| 579 |
done
|
| 580 |
|
| 581 |
return 0
|
| 582 |
}
|
| 583 |
|
| 584 |
# @FUNCTION: raw-ldflags
|
| 585 |
# @USAGE: [flags]
|
| 586 |
# @DESCRIPTION:
|
| 587 |
# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
|
| 588 |
# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
|
| 589 |
# to gcc where it needs the '-Wl,'.
|
| 590 |
#
|
| 591 |
# If no flags are specified, then default to ${LDFLAGS}.
|
| 592 |
raw-ldflags() {
|
| 593 |
local x input="$@"
|
| 594 |
[[ -z ${input} ]] && input=${LDFLAGS}
|
| 595 |
set --
|
| 596 |
for x in ${input} ; do
|
| 597 |
x=${x#-Wl,}
|
| 598 |
set -- "$@" ${x//,/ }
|
| 599 |
done
|
| 600 |
echo "$@"
|
| 601 |
}
|
| 602 |
|
| 603 |
# @FUNCTION: no-as-needed
|
| 604 |
# @RETURN: Flag to disable asneeded behavior for use with append-ldflags.
|
| 605 |
no-as-needed() {
|
| 606 |
case $($(tc-getLD) -v 2>&1 </dev/null) in
|
| 607 |
*GNU*) # GNU ld
|
| 608 |
echo "-Wl,--no-as-needed" ;;
|
| 609 |
esac
|
| 610 |
}
|
| 611 |
|
| 612 |
fi
|
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