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712 lines
20 KiB
712 lines
20 KiB
# Copyright 1999-2011 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 1.158 2011/11/14 20:29:03 vapier 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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inherit eutils toolchain-funcs multilib
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################ DEPRECATED functions ################
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# The following are still present to avoid breaking existing
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# code more than necessary; however they are deprecated. Please
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# use gcc-specs-* from toolchain-funcs.eclass instead, if you
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# need to know which hardened techs are active in the compiler.
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# See bug #100974
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#
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# has_hardened
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# has_pie
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# has_pic
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# has_ssp_all
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# has_ssp
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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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if [[ -z ${ALLOWED_FLAGS} ]] ; then
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export ALLOWED_FLAGS="-pipe"
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export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
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export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
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export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-strict-overflow"
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export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time"
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export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+"
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export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident -fpermissive"
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export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w"
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fi
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# allow a bunch of flags that negate features / control ABI
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ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \
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-fno-strict-aliasing -fno-bounds-checking -fstrict-overflow -fno-omit-frame-pointer"
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ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
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-mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 \
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-mno-sse4.2 -mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow \
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-mno-popcnt -mno-abm \
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-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 \
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-mflat -mno-flat -mno-faster-structs -mfaster-structs \
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-m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
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-mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \
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-msecure-plt -m*-toc -D* -U*"
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# 4.5
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ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-fma4 -mno-movbe -mno-xop -mno-lwp"
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# 4.6
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ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-fsgsbase -mno-rdrnd -mno-f16c \
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-mno-bmi -mno-tbm"
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# {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing
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# NOTE: currently -Os have issues with gcc3 and K6* arch's
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export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
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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 VAL
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declare -a new
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VAR=$1
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shift
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eval VAL=\${${VAR}}
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for f in ${VAL}; do
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for x in "$@"; 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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eval new\[\${\#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,F,FC}FLAGS. Accepts shell globs.
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filter-flags() {
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_filter-hardened "$@"
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_filter-var CFLAGS "$@"
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_filter-var CPPFLAGS "$@"
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_filter-var CXXFLAGS "$@"
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_filter-var FFLAGS "$@"
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_filter-var FCFLAGS "$@"
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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: 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-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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[[ $# -eq 0 ]] && return 0
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append-cflags "$@"
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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 ]] \
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&& echo && eerror "Usage: replace-flags <old flag> <new flag>" \
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&& die "replace-flags takes 2 arguments, not $#"
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local f fset
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declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS
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for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; 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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for f in ${!fset}; 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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eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
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done
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eval export ${fset}=\${new_${fset}\[*]}
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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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_is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1
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}
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# @FUNCTION: is-flag
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# @USAGE: <flag>
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# @DESCRIPTION:
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# Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs.
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is-flag() {
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is-flagq "$@" && 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 flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS
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setup-allowed-flags
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local NEW_CFLAGS=""
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local NEW_CXXFLAGS=""
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local NEW_FFLAGS=""
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local NEW_FCFLAGS=""
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# Allow unstable C[XX]FLAGS if we are using unstable profile ...
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if has "~$(tc-arch)" ${ACCEPT_KEYWORDS} ; then
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ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
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fi
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set -f # disable pathname expansion
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for x in ${CFLAGS}; do
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for y in ${ALLOWED_FLAGS}; do
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flag=${x%%=*}
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if [ "${flag%%${y}}" = "" ] ; then
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NEW_CFLAGS="${NEW_CFLAGS} ${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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for x in ${CXXFLAGS}; do
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for y in ${ALLOWED_FLAGS}; do
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flag=${x%%=*}
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if [ "${flag%%${y}}" = "" ] ; then
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NEW_CXXFLAGS="${NEW_CXXFLAGS} ${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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for x in ${FFLAGS}; do
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for y in ${ALLOWED_FLAGS}; do
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flag=${x%%=*}
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if [ "${flag%%${y}}" = "" ] ; then
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NEW_FFLAGS="${NEW_FFLAGS} ${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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for x in ${FCFLAGS}; do
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for y in ${ALLOWED_FLAGS}; do
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flag=${x%%=*}
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if [ "${flag%%${y}}" = "" ] ; then
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NEW_FCFLAGS="${NEW_FCFLAGS} ${x}"
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break
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fi
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done
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done
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# In case we filtered out all optimization flags fallback to -O2
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if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
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NEW_CFLAGS="${NEW_CFLAGS} -O2"
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fi
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if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
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NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
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fi
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if [ "${FFLAGS/-O}" != "${FFLAGS}" -a "${NEW_FFLAGS/-O}" = "${NEW_FFLAGS}" ]; then
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NEW_FFLAGS="${NEW_FFLAGS} -O2"
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fi
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if [ "${FCFLAGS/-O}" != "${FCFLAGS}" -a "${NEW_FCFLAGS/-O}" = "${NEW_FCFLAGS}" ]; then
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NEW_FCFLAGS="${NEW_FCFLAGS} -O2"
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fi
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set +f # re-enable pathname expansion
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export CFLAGS="${NEW_CFLAGS}"
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export CXXFLAGS="${NEW_CXXFLAGS}"
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export FFLAGS="${NEW_FFLAGS}"
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export FCFLAGS="${NEW_FCFLAGS}"
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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 flags="$2"
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[[ -z ${comp} || -z ${flags} ]] && return 1
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# use -c so we can test the assembler as well
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local PROG=$(tc-get${comp})
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${PROG} ${flags} -c -o /dev/null -xc /dev/null \
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> /dev/null 2>&1
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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" "$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" "$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" "$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" "$1"; }
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test-flags-PROG() {
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local comp=$1
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local flags
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local x
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shift
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[[ -z ${comp} ]] && return 1
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for x in "$@" ; do
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test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
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done
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echo "${flags}"
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# Just bail if we dont have any flags
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[[ -n ${flags} ]]
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}
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# @FUNCTION: test-flags-CC
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# @USAGE: <flags>
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# @DESCRIPTION:
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# Returns shell true if <flags> are supported by the C compiler, else returns shell false.
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test-flags-CC() { test-flags-PROG "CC" "$@"; }
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# @FUNCTION: test-flags-CXX
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|
# @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})
|
|
}
|
|
|
|
# @FUNCTION: get-flag
|
|
# @USAGE: <flag>
|
|
# @DESCRIPTION:
|
|
# Find and echo the value for a particular flag. Accepts shell globs.
|
|
get-flag() {
|
|
local f 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 f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do
|
|
if [ "${f/${findflag}}" != "${f}" ] ; then
|
|
printf "%s\n" "${f/-${findflag}=}"
|
|
return 0
|
|
fi
|
|
done
|
|
return 1
|
|
}
|
|
|
|
# DEAD FUNCS. Remove by Dec 2011.
|
|
test_flag() { die "$0: deprecated, please use test-flags()!" ; }
|
|
has_hardened() { die "$0: deprecated, please use gcc-specs-{relro,now}()!" ; }
|
|
has_pic() { die "$0: deprecated, please use gcc-specs-pie()!" ; }
|
|
has_pie() { die "$0: deprecated, please use gcc-specs-pie()!" ; }
|
|
has_ssp_all() { die "$0: deprecated, please use gcc-specs-ssp()!" ; }
|
|
has_ssp() { die "$0: deprecated, please use gcc-specs-ssp()!" ; }
|
|
|
|
# @FUNCTION: has_m64
|
|
# @DESCRIPTION:
|
|
# This doesn't test if the flag is accepted, it tests if the flag actually
|
|
# WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works
|
|
# return code is 0, else the return code is 1.
|
|
has_m64() {
|
|
# this doesnt test if the flag is accepted, it tests if the flag
|
|
# actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
|
|
# please dont replace this function with test_flag in some future
|
|
# clean-up!
|
|
|
|
local temp="$(emktemp)"
|
|
echo "int main() { return(0); }" > "${temp}".c
|
|
MY_CC=$(tc-getCC)
|
|
${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
|
|
local ret=$?
|
|
rm -f "${temp}".c
|
|
[[ ${ret} != 1 ]] && return 0
|
|
return 1
|
|
}
|
|
|
|
# @FUNCTION: has_m32
|
|
# @DESCRIPTION:
|
|
# This doesn't test if the flag is accepted, it tests if the flag actually
|
|
# WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return
|
|
# code is 0, else return code is 1.
|
|
has_m32() {
|
|
# this doesnt test if the flag is accepted, it tests if the flag
|
|
# actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
|
|
# please dont replace this function with test_flag in some future
|
|
# clean-up!
|
|
|
|
[ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
|
|
|
|
local temp=$(emktemp)
|
|
echo "int main() { return(0); }" > "${temp}".c
|
|
MY_CC=$(tc-getCC)
|
|
${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
|
|
local ret=$?
|
|
rm -f "${temp}".c
|
|
[[ ${ret} != 1 ]] && return 0
|
|
return 1
|
|
}
|
|
|
|
# @FUNCTION: replace-sparc64-flags
|
|
# @DESCRIPTION:
|
|
# Sets mcpu to v8 and uses the original value as mtune if none specified.
|
|
replace-sparc64-flags() {
|
|
local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
|
|
|
|
if [ "${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.
|
|
append-libs() {
|
|
[[ $# -eq 0 ]] && return 0
|
|
local flag
|
|
for flag in "$@"; do
|
|
[[ ${flag} == -l* ]] && flag=${flag#-l}
|
|
export LIBS="${LIBS} -l${flag}"
|
|
done
|
|
|
|
return 0
|
|
}
|
|
|
|
# @FUNCTION: append-ldflags
|
|
# @USAGE: <flags>
|
|
# @DESCRIPTION:
|
|
# Add extra <flags> to the current LDFLAGS.
|
|
append-ldflags() {
|
|
[[ $# -eq 0 ]] && return 0
|
|
local flag
|
|
for flag in "$@"; do
|
|
[[ ${flag} == -l* ]] && \
|
|
ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS"
|
|
done
|
|
|
|
export LDFLAGS="${LDFLAGS} $*"
|
|
return 0
|
|
}
|
|
|
|
# @FUNCTION: filter-ldflags
|
|
# @USAGE: <flags>
|
|
# @DESCRIPTION:
|
|
# Remove particular <flags> from LDFLAGS. Accepts shell globs.
|
|
filter-ldflags() {
|
|
_filter-var LDFLAGS "$@"
|
|
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 ${input} ; do
|
|
x=${x#-Wl,}
|
|
set -- "$@" ${x//,/ }
|
|
done
|
|
echo "$@"
|
|
}
|
|
|
|
# @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
|
|
}
|
|
|
|
# Some tests for when we screw with things and want to make
|
|
# sure we didn't break anything
|
|
#TESTS() {
|
|
# CFLAGS="-a -b -c=1"
|
|
# CXXFLAGS="-x -y -z=2"
|
|
# LDFLAGS="-l -m -n=3"
|
|
#
|
|
# die() { exit 1; }
|
|
# (is-flag 1 2 3) && die
|
|
# (is-ldflag 1 2 3) && die
|
|
#
|
|
# is-flagq -l && die
|
|
# is-ldflagq -a && die
|
|
# is-flagq -a || die
|
|
# is-flagq -x || die
|
|
# is-ldflagq -n=* || die
|
|
# is-ldflagq -n && die
|
|
#
|
|
# strip-unsupported-flags
|
|
# [[ ${CFLAGS} == "-c=1" ]] || die
|
|
# [[ ${CXXFLAGS} == "-y -z=2" ]] || die
|
|
#
|
|
# echo "All tests pass"
|
|
#}
|
|
#TESTS
|