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679 lines
18 KiB
679 lines
18 KiB
# Copyright 1999-2017 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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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 [[ -z ${_FLAG_O_MATIC_ECLASS} ]]; then
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_FLAG_O_MATIC_ECLASS=1
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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 {ADA,C,CPP,CXX,CCAS,F,FC,LD}FLAGS
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}
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# {C,CPP,CXX,CCAS,F,FC,LD}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=(
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-pipe -O '-O[12sg]' -mcpu -march -mtune
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'-fstack-protector*' '-fsanitize*' '-fstack-check*' -fno-stack-check
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-fbounds-check -fbounds-checking -fno-strict-overflow
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-fno-PIE -fno-pie -nopie -no-pie -fno-unit-at-a-time
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-g '-g[0-9]' -ggdb '-ggdb[0-9]' '-gdwarf-*' gstabs -gstabs+
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-fno-ident -fpermissive -frecord-gcc-switches
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'-fdiagnostics*' '-fplugin*'
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'-W*' -w
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# CPPFLAGS and LDFLAGS
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'-[DUILR]*' '-Wl,*'
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)
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# allow a bunch of flags that negate features / control ABI
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ALLOWED_FLAGS+=(
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'-fno-stack-protector*' '-fabi-version=*'
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-fno-strict-aliasing -fno-bounds-check -fno-bounds-checking -fstrict-overflow
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-fno-omit-frame-pointer '-fno-builtin*'
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)
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ALLOWED_FLAGS+=(
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-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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-mfix-r10000 -mno-fix-r10000 -mthumb -marm
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# gcc 4.5
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-mno-fma4 -mno-movbe -mno-xop -mno-lwp
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# gcc 4.6
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-mno-fsgsbase -mno-rdrnd -mno-f16c -mno-bmi -mno-tbm
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# gcc 4.7
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-mno-avx2 -mno-bmi2 -mno-fma -mno-lzcnt
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# gcc 4.8
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-mno-fxsr -mno-hle -mno-rtm -mno-xsave -mno-xsaveopt
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# gcc 4.9
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-mno-avx512cd -mno-avx512er -mno-avx512f -mno-avx512pf -mno-sha
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)
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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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if ! is-flagq -nopie && ! is-flagq -no-pie ; then
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# Support older Gentoo form first (-nopie) before falling
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# back to the official gcc-6+ form (-no-pie).
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if test-flags -nopie >/dev/null ; then
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append-flags -nopie
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else
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append-flags -no-pie
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fi
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fi
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;;
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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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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+=" $*"
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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. If a flag might not be supported
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# with different compilers (or versions), then use test-flags-CC like so:
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# @CODE
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# append-cflags $(test-flags-CC -funky-flag)
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# @CODE
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append-cflags() {
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[[ $# -eq 0 ]] && return 0
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# Do not do automatic flag testing ourselves. #417047
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export 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. If a flag might not be supported
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# with different compilers (or versions), then use test-flags-CXX like so:
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# @CODE
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# append-cxxflags $(test-flags-CXX -funky-flag)
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# @CODE
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append-cxxflags() {
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[[ $# -eq 0 ]] && return 0
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# Do not do automatic flag testing ourselves. #417047
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export 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. If a flag might not be supported
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# with different compilers (or versions), then use test-flags-F77 like so:
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# @CODE
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# append-fflags $(test-flags-F77 -funky-flag)
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# @CODE
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append-fflags() {
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[[ $# -eq 0 ]] && return 0
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# Do not do automatic flag testing ourselves. #417047
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export FFLAGS+=" $*"
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export 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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[[ ${flag} == -l* ]] && \
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eqawarn "Appending a library link instruction (${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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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 var="$1[*]"
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for x in ${!var} ; 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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# convert "both" to something we can filter
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new_math=${new_math/both/387,sse}
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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 *FLAGS of everything except known good/safe flags. This runs over all
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# flags returned by all_flag_vars().
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strip-flags() {
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local x y var
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local ALLOWED_FLAGS
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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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if [[ ${!var} != "${new[*]}" ]] ; then
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einfo "strip-flags: ${var}: changed '${!var}' to '${new[*]}'"
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fi
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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 lang=$2
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local flag=$3
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[[ -z ${comp} || -z ${flag} ]] && return 1
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local cmdline=(
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$(tc-get${comp})
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# Clang will warn about unknown gcc flags but exit 0.
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# Need -Werror to force it to exit non-zero.
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-Werror
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# Use -c so we can test the assembler as well.
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-c -o /dev/null
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)
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if "${cmdline[@]}" -x${lang} - </dev/null &>/dev/null ; then
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cmdline+=( "${flag}" -x${lang} - )
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else
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# XXX: what's the purpose of this? does it even work with
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# any compiler?
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cmdline+=( "${flag}" -c -o /dev/null /dev/null )
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fi
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if ! "${cmdline[@]}" </dev/null &>/dev/null; then
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# -Werror makes clang bail out on unused arguments as well;
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# try to add -Qunused-arguments to work-around that
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# other compilers don't support it but then, it's failure like
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# any other
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cmdline+=( -Qunused-arguments )
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"${cmdline[@]}" </dev/null &>/dev/null
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fi
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}
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# @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" c "$1"; }
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# @FUNCTION: test-flag-CXX
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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-CXX() { test-flag-PROG "CXX" c++ "$1"; }
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# @FUNCTION: test-flag-F77
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# @USAGE: <flag>
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# @DESCRIPTION:
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# 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" f77 "$1"; }
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# @FUNCTION: test-flag-FC
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# @USAGE: <flag>
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# @DESCRIPTION:
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# Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false.
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test-flag-FC() { test-flag-PROG "FC" f95 "$1"; }
|
|
|
|
test-flags-PROG() {
|
|
local comp=$1
|
|
local flags=()
|
|
local x
|
|
|
|
shift
|
|
|
|
[[ -z ${comp} ]] && return 1
|
|
|
|
for x ; do
|
|
test-flag-${comp} "${x}" && flags+=( "${x}" )
|
|
done
|
|
|
|
echo "${flags[*]}"
|
|
|
|
# Just bail if we dont have any flags
|
|
[[ ${#flags[@]} -gt 0 ]]
|
|
}
|
|
|
|
# @FUNCTION: test-flags-CC
|
|
# @USAGE: <flags>
|
|
# @DESCRIPTION:
|
|
# Returns shell true if <flags> are supported by the C compiler, else returns shell false.
|
|
test-flags-CC() { test-flags-PROG "CC" "$@"; }
|
|
|
|
# @FUNCTION: test-flags-CXX
|
|
# @USAGE: <flags>
|
|
# @DESCRIPTION:
|
|
# Returns shell true if <flags> are supported by the C++ compiler, else returns shell false.
|
|
test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
|
|
|
|
# @FUNCTION: test-flags-F77
|
|
# @USAGE: <flags>
|
|
# @DESCRIPTION:
|
|
# Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false.
|
|
test-flags-F77() { test-flags-PROG "F77" "$@"; }
|
|
|
|
# @FUNCTION: test-flags-FC
|
|
# @USAGE: <flags>
|
|
# @DESCRIPTION:
|
|
# Returns shell true if <flags> are supported by the Fortran 90 compiler, else returns shell false.
|
|
test-flags-FC() { test-flags-PROG "FC" "$@"; }
|
|
|
|
# @FUNCTION: test-flags
|
|
# @USAGE: <flags>
|
|
# @DESCRIPTION:
|
|
# Short-hand that should hopefully work for both C and C++ compiler, but
|
|
# its really only present due to the append-flags() abomination.
|
|
test-flags() { test-flags-CC "$@"; }
|
|
|
|
# @FUNCTION: test_version_info
|
|
# @USAGE: <version>
|
|
# @DESCRIPTION:
|
|
# Returns shell true if the current C compiler version matches <version>, else returns shell false.
|
|
# Accepts shell globs.
|
|
test_version_info() {
|
|
if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
|
|
return 0
|
|
else
|
|
return 1
|
|
fi
|
|
}
|
|
|
|
# @FUNCTION: strip-unsupported-flags
|
|
# @DESCRIPTION:
|
|
# Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain.
|
|
strip-unsupported-flags() {
|
|
export CFLAGS=$(test-flags-CC ${CFLAGS})
|
|
export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
|
|
export FFLAGS=$(test-flags-F77 ${FFLAGS})
|
|
export FCFLAGS=$(test-flags-FC ${FCFLAGS})
|
|
# note: this does not verify the linker flags but it is enough
|
|
# to strip invalid C flags which are much more likely, #621274
|
|
export LDFLAGS=$(test-flags-CC ${LDFLAGS})
|
|
}
|
|
|
|
# @FUNCTION: get-flag
|
|
# @USAGE: <flag>
|
|
# @DESCRIPTION:
|
|
# Find and echo the value for a particular flag. Accepts shell globs.
|
|
get-flag() {
|
|
local f var findflag="$1"
|
|
|
|
# this code looks a little flaky but seems to work for
|
|
# everything we want ...
|
|
# for example, if CFLAGS="-march=i686":
|
|
# `get-flag -march` == "-march=i686"
|
|
# `get-flag march` == "i686"
|
|
for var in $(all-flag-vars) ; do
|
|
for f in ${!var} ; do
|
|
if [ "${f/${findflag}}" != "${f}" ] ; then
|
|
printf "%s\n" "${f/-${findflag}=}"
|
|
return 0
|
|
fi
|
|
done
|
|
done
|
|
return 1
|
|
}
|
|
|
|
has_m64() {
|
|
die "${FUNCNAME}: don't use this anymore"
|
|
}
|
|
|
|
has_m32() {
|
|
die "${FUNCNAME}: don't use this anymore"
|
|
}
|
|
|
|
# @FUNCTION: replace-sparc64-flags
|
|
# @DESCRIPTION:
|
|
# Sets mcpu to v8 and uses the original value as mtune if none specified.
|
|
replace-sparc64-flags() {
|
|
local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
|
|
|
|
if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
|
|
for x in ${SPARC64_CPUS}; do
|
|
CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
|
|
done
|
|
else
|
|
for x in ${SPARC64_CPUS}; do
|
|
CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
|
|
done
|
|
fi
|
|
|
|
if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
|
|
for x in ${SPARC64_CPUS}; do
|
|
CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
|
|
done
|
|
else
|
|
for x in ${SPARC64_CPUS}; do
|
|
CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
|
|
done
|
|
fi
|
|
|
|
export CFLAGS CXXFLAGS
|
|
}
|
|
|
|
# @FUNCTION: append-libs
|
|
# @USAGE: <libs>
|
|
# @DESCRIPTION:
|
|
# Add extra <libs> to the current LIBS. All arguments should be prefixed with
|
|
# either -l or -L. For compatibility, if arguments are not prefixed as
|
|
# options, they are given a -l prefix automatically.
|
|
append-libs() {
|
|
[[ $# -eq 0 ]] && return 0
|
|
local flag
|
|
for flag in "$@"; do
|
|
if [[ -z "${flag// }" ]]; then
|
|
eqawarn "Appending an empty argument to LIBS is invalid! Skipping."
|
|
continue
|
|
fi
|
|
case $flag in
|
|
-[lL]*)
|
|
export LIBS="${LIBS} ${flag}"
|
|
;;
|
|
-*)
|
|
eqawarn "Appending non-library to LIBS (${flag}); Other linker flags should be passed via LDFLAGS"
|
|
export LIBS="${LIBS} ${flag}"
|
|
;;
|
|
*)
|
|
export LIBS="${LIBS} -l${flag}"
|
|
esac
|
|
done
|
|
|
|
return 0
|
|
}
|
|
|
|
# @FUNCTION: raw-ldflags
|
|
# @USAGE: [flags]
|
|
# @DESCRIPTION:
|
|
# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
|
|
# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
|
|
# to gcc where it needs the '-Wl,'.
|
|
#
|
|
# If no flags are specified, then default to ${LDFLAGS}.
|
|
raw-ldflags() {
|
|
local x input="$@"
|
|
[[ -z ${input} ]] && input=${LDFLAGS}
|
|
set --
|
|
for x in ${input} ; do
|
|
case ${x} in
|
|
-Wl,*)
|
|
x=${x#-Wl,}
|
|
set -- "$@" ${x//,/ }
|
|
;;
|
|
*) # Assume it's a compiler driver flag, so throw it away #441808
|
|
;;
|
|
esac
|
|
done
|
|
echo "$@"
|
|
}
|
|
|
|
# @FUNCTION: no-as-needed
|
|
# @RETURN: Flag to disable asneeded behavior for use with append-ldflags.
|
|
no-as-needed() {
|
|
case $($(tc-getLD) -v 2>&1 </dev/null) in
|
|
*GNU*) # GNU ld
|
|
echo "-Wl,--no-as-needed" ;;
|
|
esac
|
|
}
|
|
|
|
fi
|