gentoo-x86/eclass/flag-o-matic.eclass

# Copyright 1999-2002 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# Author Bart Verwilst <verwilst@gentoo.org>
# $Header: /home/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.10 2002/11/25 04:39:33 vapier Exp $

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
}
1	verwilst	1.1	# Copyright 1999-2002 Gentoo Technologies, Inc.
2			# Distributed under the terms of the GNU General Public License v2
3			# Author Bart Verwilst <verwilst@gentoo.org>
4	cretin	1.11	# $Header: /home/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.10 2002/11/25 04:39:33 vapier Exp $
5	azarah	1.8
6	verwilst	1.1	ECLASS=flag-o-matic
7	danarmak	1.6	INHERITED="$INHERITED $ECLASS"
8	azarah	1.8
9	verwilst	1.2	#
10	verwilst	1.3	#### filter-flags <flag> ####
11			# Remove particular flags from C[XX]FLAGS
12	verwilst	1.2	#
13	verwilst	1.3	#### append-flags <flag> ####
14			# Add extra flags to your current C[XX]FLAGS
15			#
16	verwilst	1.4	#### replace-flags <orig.flag> <new.flag> ###
17	verwilst	1.3	# Replace a flag by another one
18			#
19	danarmak	1.7	#### is-flag <flag> ####
20			# Returns "true" if flag is set in C[XX]FLAGS
21			# Matches only complete flag
22			#
23	azarah	1.8	#### strip-flags ####
24			# Strip C[XX]FLAGS of everything except known
25			# good options.
26			#
27	vapier	1.10	#### get-flag <flag> ####
28			# Find and echo the value for a particular flag
29			#
30	verwilst	1.3
31	verwilst	1.1	filter-flags () {
32
33	azarah	1.8	for x in $1
34			do
35			export CFLAGS="${CFLAGS/${x}}"
36			export CXXFLAGS="${CXXFLAGS/${x}}"
37	verwilst	1.1	done
38	verwilst	1.2
39			}
40
41			append-flags () {
42
43	azarah	1.8	CFLAGS="${CFLAGS} $1"
44			CXXFLAGS="${CXXFLAGS} $1"
45	verwilst	1.1
46			}
47
48	verwilst	1.4	replace-flags () {
49	verwilst	1.1
50	seemant	1.9	CFLAGS="${CFLAGS/${1}/${2} }"
51			CXXFLAGS="${CXXFLAGS/${1}/${2} }"
52	danarmak	1.7
53			}
54
55			is-flag() {
56
57	azarah	1.8	for x in ${CFLAGS} ${CXXFLAGS}
58			do
59			if [ "${x}" = "$1" ]
60			then
61			echo true
62			break
63	danarmak	1.7	fi
64			done
65	verwilst	1.1
66			}
67	azarah	1.8
68			strip-flags() {
69
70			local NEW_CFLAGS=""
71			local NEW_CXXFLAGS=""
72
73	cretin	1.11	local ALLOWED_FLAGS="-O -mcpu -march -pipe -g"
74	azarah	1.8
75			set -f
76
77			for x in ${CFLAGS}
78			do
79			for y in ${ALLOWED_FLAGS}
80			do
81			if [ "${x/${y}}" != "${x}" ]
82			then
83			if [ -z "${NEW_CFLAGS}" ]
84			then
85			NEW_CFLAGS="${x}"
86			else
87			NEW_CFLAGS="${NEW_CFLAGS} ${x}"
88			fi
89			fi
90			done
91			done
92
93			for x in ${CXXFLAGS}
94			do
95			for y in ${ALLOWED_FLAGS}
96			do
97			if [ "${x/${y}}" != "${x}" ]
98			then
99			if [ -z "${NEW_CXXFLAGS}" ]
100			then
101			NEW_CXXFLAGS="${x}"
102			else
103			NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
104			fi
105			fi
106			done
107			done
108
109			set +f
110
111			export CFLAGS="${NEW_CFLAGS}"
112			export CXXFLAGS="${NEW_CXXFLAGS}"
113			}
114
115	vapier	1.10	get-flag() {
116			local findflag="$1"
117
118			for f in ${CFLAGS} ${CXXFLAGS} ; do
119			if [ "${f/${findflag}}" != "${f}" ] ; then
120			echo "${f/-${findflag}=}"
121			return
122			fi
123			done
124			}