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# Copyright 1999-2003 Gentoo Technologies, Inc.
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# Distributed under the terms of the GNU General Public License v2
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# $Header: /home/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.14 2003/03/25 07:07:42 lostlogic Exp $
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#
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# Author Bart Verwilst <verwilst@gentoo.org>
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ECLASS=flag-o-matic
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INHERITED="$INHERITED $ECLASS"
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#
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#### filter-flags <flag> ####
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# Remove particular flags from C[XX]FLAGS
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#
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#### append-flags <flag> ####
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# Add extra flags to your current C[XX]FLAGS
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#
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#### replace-flags <orig.flag> <new.flag> ###
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# Replace a flag by another one
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#
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#### is-flag <flag> ####
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# Returns "true" if flag is set in C[XX]FLAGS
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# Matches only complete flag
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#
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#### strip-flags ####
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# Strip C[XX]FLAGS of everything except known
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# good options.
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#
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#### get-flag <flag> ####
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# Find and echo the value for a particular flag
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#
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ALLOWED_FLAGS="-O -mcpu -march -mtune -fstack-protector -pipe -g"
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filter-flags () {
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for x in $1
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do
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export CFLAGS="${CFLAGS/${x}}"
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export CXXFLAGS="${CXXFLAGS/${x}}"
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done
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}
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append-flags () {
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CFLAGS="${CFLAGS} $1"
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CXXFLAGS="${CXXFLAGS} $1"
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}
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replace-flags () {
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CFLAGS="${CFLAGS/${1}/${2} }"
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CXXFLAGS="${CXXFLAGS/${1}/${2} }"
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}
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is-flag() {
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for x in ${CFLAGS} ${CXXFLAGS}
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do
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if [ "${x}" = "$1" ]
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then
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echo true
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break
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fi
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done
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}
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strip-flags() {
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local NEW_CFLAGS=""
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local NEW_CXXFLAGS=""
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set -f
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for x in ${CFLAGS}
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do
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for y in ${ALLOWED_FLAGS}
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do
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flag=${x%%=*}
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if [ "${flag%%${y}}" = "" ]
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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}
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do
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for y in ${ALLOWED_FLAGS}
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do
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flag=${x%%=*}
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if [ "${flag%%${y}}" = "" ]
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then
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NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
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break
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fi
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done
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done
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set +f
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export CFLAGS="${NEW_CFLAGS}"
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export CXXFLAGS="${NEW_CXXFLAGS}"
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}
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get-flag() {
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local findflag="$1"
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for f in ${CFLAGS} ${CXXFLAGS} ; do
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if [ "${f/${findflag}}" != "${f}" ] ; then
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echo "${f/-${findflag}=}"
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return
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fi
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done
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}
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