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# Copyright 1999-2003 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.12 2003/02/16 04:26:21 vapier Exp $
#
# Author Bart Verwilst <verwilst@gentoo.org>
ECLASS=flag-o-matic
INHERITED="$INHERITED $ECLASS"
#
#### filter-flags <flag> ####
# Remove particular flags from C[XX]FLAGS
#
#### append-flags <flag> ####
# Add extra flags to your current C[XX]FLAGS
#
#### replace-flags <orig.flag> <new.flag> ###
# Replace a flag by another one
#
#### is-flag <flag> ####
# Returns "true" if flag is set in C[XX]FLAGS
# Matches only complete flag
#
#### strip-flags ####
# Strip C[XX]FLAGS of everything except known
# good options.
#
#### get-flag <flag> ####
# Find and echo the value for a particular flag
#
filter-flags () {
for x in $1
do
export CFLAGS="${CFLAGS/${x}}"
export CXXFLAGS="${CXXFLAGS/${x}}"
done
}
append-flags () {
CFLAGS="${CFLAGS} $1"
CXXFLAGS="${CXXFLAGS} $1"
}
replace-flags () {
CFLAGS="${CFLAGS/${1}/${2} }"
CXXFLAGS="${CXXFLAGS/${1}/${2} }"
}
is-flag() {
for x in ${CFLAGS} ${CXXFLAGS}
do
if [ "${x}" = "$1" ]
then
echo true
break
fi
done
}
strip-flags() {
local NEW_CFLAGS=""
local NEW_CXXFLAGS=""
local ALLOWED_FLAGS="-O -mcpu -march -pipe -g"
set -f
for x in ${CFLAGS}
do
for y in ${ALLOWED_FLAGS}
do
if [ "${x/${y}}" != "${x}" ]
then
if [ -z "${NEW_CFLAGS}" ]
then
NEW_CFLAGS="${x}"
else
NEW_CFLAGS="${NEW_CFLAGS} ${x}"
fi
fi
done
done
for x in ${CXXFLAGS}
do
for y in ${ALLOWED_FLAGS}
do
if [ "${x/${y}}" != "${x}" ]
then
if [ -z "${NEW_CXXFLAGS}" ]
then
NEW_CXXFLAGS="${x}"
else
NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
fi
fi
done
done
set +f
export CFLAGS="${NEW_CFLAGS}"
export CXXFLAGS="${NEW_CXXFLAGS}"
}
get-flag() {
local findflag="$1"
for f in ${CFLAGS} ${CXXFLAGS} ; do
if [ "${f/${findflag}}" != "${f}" ] ; then
echo "${f/-${findflag}=}"
return
fi
done
}
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