/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.16 Revision 1.24
1# Copyright 1999-2003 Gentoo Technologies, Inc. 1# Copyright 1999-2003 Gentoo Technologies, Inc.
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.16 2003/04/19 18:20:56 joker Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.24 2003/07/22 12:48:11 aliz Exp $
4# 4#
5# Author Bart Verwilst <verwilst@gentoo.org> 5# Author Bart Verwilst <verwilst@gentoo.org>
6 6
7ECLASS=flag-o-matic 7ECLASS=flag-o-matic
8INHERITED="$INHERITED $ECLASS" 8INHERITED="$INHERITED $ECLASS"
9 9
10# 10#
11#### filter-flags <flag> #### 11#### filter-flags <flags> ####
12# Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags
13# 14#
14#### append-flags <flag> #### 15#### append-flags <flags> ####
15# Add extra flags to your current C[XX]FLAGS 16# Add extra flags to your current C[XX]FLAGS
16# 17#
17#### replace-flags <orig.flag> <new.flag> ### 18#### replace-flags <orig.flag> <new.flag> ###
18# Replace a flag by another one 19# Replace a flag by another one
19# 20#
20#### is-flag <flag> #### 21#### is-flag <flag> ####
21# Returns "true" if flag is set in C[XX]FLAGS 22# Returns "true" if flag is set in C[XX]FLAGS
22# Matches only complete flag 23# Matches only complete a flag
23# 24#
24#### strip-flags #### 25#### strip-flags ####
25# Strip C[XX]FLAGS of everything except known 26# Strip C[XX]FLAGS of everything except known
26# good options. 27# good options.
27# 28#
32# Sets mcpu to v8 and uses the original value 33# Sets mcpu to v8 and uses the original value
33# as mtune if none specified. 34# as mtune if none specified.
34# 35#
35 36
36 37
38# C[XX]FLAGS that we allow in strip-flags
37ALLOWED_FLAGS="-O -mcpu -march -mtune -fstack-protector -pipe -g" 39ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
40case "${ARCH}" in
41 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
42 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
43esac
38 44
45# C[XX]FLAGS that we are think is ok, but needs testing
46# NOTE: currently -Os have issues with gcc3 and K6* arch's
47UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
39 48
40filter-flags () { 49filter-mfpmath() {
41 50 for a in $CFLAGS; do
42 for x in $1 51 if [ "${a:0:8}" == "-mfpmath" ]; then
43 do 52 orig_mfpmath=$a
44 export CFLAGS="${CFLAGS/${x}}" 53 fi
45 export CXXFLAGS="${CXXFLAGS/${x}}"
46 done 54 done
47 55
56 mfpmath="$( echo $orig_mfpmath | awk -F '=' '{print $2}' | tr "," " " )"
57 for b in $@; do
58 mfpmath="${mfpmath/$b}"
59 done
60
61 if [ -z "${mfpmath/ }" ]; then
62 filter-flags "$orig_mfpmath"
63 else
64 new_mfpmath="-mfpmath=$( echo $mfpmath | sed -e "s/ /,/g" -e "s/,,/,/g" )"
65 replace-flags "$orig_mfpmath" "$new_mfpmath"
66 fi
48} 67}
49 68
50append-flags () { 69filter-flags() {
51 70 # we do this fancy spacing stuff so as to not filter
71 # out part of a flag ... we want flag atoms ! :D
52 CFLAGS="${CFLAGS} $1" 72 export CFLAGS=" ${CFLAGS} "
53 CXXFLAGS="${CXXFLAGS} $1" 73 export CXXFLAGS=" ${CXXFLAGS} "
54 74 for x in $@ ; do
75 export CFLAGS="${CFLAGS/ ${x} / }"
76 export CXXFLAGS="${CXXFLAGS/ ${x} / }"
77 done
78 export CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
79 export CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
55} 80}
56 81
57replace-flags () { 82append-flags() {
83 CFLAGS="${CFLAGS} $@"
84 CXXFLAGS="${CXXFLAGS} $@"
85}
58 86
87replace-flags() {
59 CFLAGS="${CFLAGS/${1}/${2} }" 88 CFLAGS="${CFLAGS/${1}/${2} }"
60 CXXFLAGS="${CXXFLAGS/${1}/${2} }" 89 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
61
62} 90}
63 91
64is-flag() { 92is-flag() {
65
66 for x in ${CFLAGS} ${CXXFLAGS} 93 for x in ${CFLAGS} ${CXXFLAGS} ; do
67 do
68 if [ "${x}" = "$1" ] 94 if [ "${x}" == "$1" ] ; then
69 then
70 echo true 95 echo true
71 break 96 return 0
72 fi 97 fi
73 done 98 done
74 99 return 1
75} 100}
76 101
77strip-flags() { 102strip-flags() {
78
79 local NEW_CFLAGS="" 103 local NEW_CFLAGS=""
80 local NEW_CXXFLAGS="" 104 local NEW_CXXFLAGS=""
105
106 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
107 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
108 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
109 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
110 fi
81 111
82 set -f 112 set -f
83 113
84 for x in ${CFLAGS} 114 for x in ${CFLAGS}
85 do 115 do
107 done 137 done
108 done 138 done
109 139
110 set +f 140 set +f
111 141
142 [ `use debug` ] \
143 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
144 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
145
112 export CFLAGS="${NEW_CFLAGS}" 146 export CFLAGS="${NEW_CFLAGS}"
113 export CXXFLAGS="${NEW_CXXFLAGS}" 147 export CXXFLAGS="${NEW_CXXFLAGS}"
114} 148}
115 149
116get-flag() { 150get-flag() {
122 return 156 return
123 fi 157 fi
124 done 158 done
125} 159}
126 160
127replace-sparc64-flags () { 161replace-sparc64-flags() {
128
129 local SPARC64_CPUS="ultrasparc v9" 162 local SPARC64_CPUS="ultrasparc v9"
130 163
131 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] 164 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
132 then 165 then
133 for x in ${SPARC64_CPUS} 166 for x in ${SPARC64_CPUS}
151 for x in ${SPARC64_CPUS} 184 for x in ${SPARC64_CPUS}
152 do 185 do
153 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 186 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
154 done 187 done
155 fi 188 fi
156
157} 189}

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