/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.13 - (show annotations) (download)
Tue Mar 4 22:07:17 2003 UTC (11 years, 4 months ago) by verwilst
Branch: MAIN
Changes since 1.12: +4 -3 lines
extended filter-flags

1 # Copyright 1999-2003 Gentoo Technologies, Inc.
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /home/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.12 2003/02/16 04:26:21 vapier Exp $
4 #
5 # Author Bart Verwilst <verwilst@gentoo.org>
6
7 ECLASS=flag-o-matic
8 INHERITED="$INHERITED $ECLASS"
9
10 #
11 #### filter-flags <flag> ####
12 # Remove particular flags from C[XX]FLAGS
13 #
14 #### append-flags <flag> ####
15 # Add extra flags to your current C[XX]FLAGS
16 #
17 #### replace-flags <orig.flag> <new.flag> ###
18 # Replace a flag by another one
19 #
20 #### is-flag <flag> ####
21 # Returns "true" if flag is set in C[XX]FLAGS
22 # Matches only complete flag
23 #
24 #### strip-flags ####
25 # Strip C[XX]FLAGS of everything except known
26 # good options.
27 #
28 #### get-flag <flag> ####
29 # Find and echo the value for a particular flag
30 #
31
32 ALLOWED_FLAGS="-O -mcpu -march -pipe -g"
33
34
35 filter-flags () {
36
37 for x in $1
38 do
39 export CFLAGS="${CFLAGS/${x}}"
40 export CXXFLAGS="${CXXFLAGS/${x}}"
41 done
42
43 }
44
45 append-flags () {
46
47 CFLAGS="${CFLAGS} $1"
48 CXXFLAGS="${CXXFLAGS} $1"
49
50 }
51
52 replace-flags () {
53
54 CFLAGS="${CFLAGS/${1}/${2} }"
55 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
56
57 }
58
59 is-flag() {
60
61 for x in ${CFLAGS} ${CXXFLAGS}
62 do
63 if [ "${x}" = "$1" ]
64 then
65 echo true
66 break
67 fi
68 done
69
70 }
71
72 strip-flags() {
73
74 local NEW_CFLAGS=""
75 local NEW_CXXFLAGS=""
76
77 set -f
78
79 for x in ${CFLAGS}
80 do
81 for y in ${ALLOWED_FLAGS}
82 do
83 if [ "${x/${y}}" != "${x}" ]
84 then
85 if [ -z "${NEW_CFLAGS}" ]
86 then
87 NEW_CFLAGS="${x}"
88 else
89 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
90 fi
91 fi
92 done
93 done
94
95 for x in ${CXXFLAGS}
96 do
97 for y in ${ALLOWED_FLAGS}
98 do
99 if [ "${x/${y}}" != "${x}" ]
100 then
101 if [ -z "${NEW_CXXFLAGS}" ]
102 then
103 NEW_CXXFLAGS="${x}"
104 else
105 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
106 fi
107 fi
108 done
109 done
110
111 set +f
112
113 export CFLAGS="${NEW_CFLAGS}"
114 export CXXFLAGS="${NEW_CXXFLAGS}"
115 }
116
117 get-flag() {
118 local findflag="$1"
119
120 for f in ${CFLAGS} ${CXXFLAGS} ; do
121 if [ "${f/${findflag}}" != "${f}" ] ; then
122 echo "${f/-${findflag}=}"
123 return
124 fi
125 done
126 }

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