/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.15 Revision 1.26
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 1.15 2003/04/06 23:35:41 method Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.26 2003/09/15 15:21:04 vapier 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 $ECLASS"
9 9
10# 10#
11#### filter-flags <flag> #### 11#### filter-flags <flags> ####
12# Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags
13# 14#
14#### append-flags <flag> #### 15#### append-flags <flags> ####
15# Add extra flags to your current C[XX]FLAGS 16# Add extra flags to your current C[XX]FLAGS
16# 17#
17#### replace-flags <orig.flag> <new.flag> ### 18#### replace-flags <orig.flag> <new.flag> ###
18# Replace a flag by another one 19# Replace a flag by another one
19# 20#
20#### is-flag <flag> #### 21#### is-flag <flag> ####
21# Returns "true" if flag is set in C[XX]FLAGS 22# Returns "true" if flag is set in C[XX]FLAGS
22# Matches only complete flag 23# Matches only complete a flag
23# 24#
24#### strip-flags #### 25#### strip-flags ####
25# Strip C[XX]FLAGS of everything except known 26# Strip C[XX]FLAGS of everything except known
26# good options. 27# good options.
27# 28#
28#### get-flag <flag> #### 29#### get-flag <flag> ####
29# Find and echo the value for a particular flag 30# Find and echo the value for a particular flag
30# 31#
32#### replace-sparc64-flags ####
33# Sets mcpu to v8 and uses the original value
34# as mtune if none specified.
35#
36#### filter-mfpmath <math types> ####
37# Remove specified math types from the fpmath specification
38# If the user has -mfpmath=sse,386, running `filter-mfpmath sse`
39# will leave the user with -mfpmath=386
31 40
41# C[XX]FLAGS that we allow in strip-flags
32ALLOWED_FLAGS="-O -mcpu -march -mtune -fstack-protector -pipe -g" 42ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
43case "${ARCH}" in
44 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
45 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
46 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
47esac
33 48
49# C[XX]FLAGS that we are think is ok, but needs testing
50# NOTE: currently -Os have issues with gcc3 and K6* arch's
51UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
34 52
35filter-flags () { 53filter-mfpmath() {
36 54 for a in $CFLAGS; do
37 for x in $1 55 if [ "${a:0:8}" == "-mfpmath" ]; then
38 do 56 orig_mfpmath=$a
39 export CFLAGS="${CFLAGS/${x}}" 57 fi
40 export CXXFLAGS="${CXXFLAGS/${x}}"
41 done 58 done
42 59
60 mfpmath="$( echo $orig_mfpmath | awk -F '=' '{print $2}' | tr "," " " )"
61 for b in $@; do
62 mfpmath="${mfpmath/$b}"
63 done
64
65 if [ -z "${mfpmath/ }" ]; then
66 filter-flags "$orig_mfpmath"
67 else
68 new_mfpmath="-mfpmath=$( echo $mfpmath | sed -e "s/ /,/g" -e "s/,,/,/g" )"
69 replace-flags "$orig_mfpmath" "$new_mfpmath"
70 fi
43} 71}
44 72
45append-flags () { 73filter-flags() {
46 74 # we do this fancy spacing stuff so as to not filter
75 # out part of a flag ... we want flag atoms ! :D
47 CFLAGS="${CFLAGS} $1" 76 CFLAGS=" ${CFLAGS} "
48 CXXFLAGS="${CXXFLAGS} $1" 77 CXXFLAGS=" ${CXXFLAGS} "
49 78 for x in $@ ; do
79 CFLAGS="${CFLAGS/ ${x} / }"
80 CXXFLAGS="${CXXFLAGS/ ${x} / }"
81 done
82 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
83 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
50} 84}
51 85
52replace-flags () { 86append-flags() {
87 CFLAGS="${CFLAGS} $@"
88 CXXFLAGS="${CXXFLAGS} $@"
89}
53 90
91replace-flags() {
54 CFLAGS="${CFLAGS/${1}/${2} }" 92 CFLAGS="${CFLAGS/${1}/${2} }"
55 CXXFLAGS="${CXXFLAGS/${1}/${2} }" 93 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
56
57} 94}
58 95
59is-flag() { 96is-flag() {
60
61 for x in ${CFLAGS} ${CXXFLAGS} 97 for x in ${CFLAGS} ${CXXFLAGS} ; do
62 do
63 if [ "${x}" = "$1" ] 98 if [ "${x}" == "$1" ] ; then
64 then
65 echo true 99 echo true
66 break 100 return 0
67 fi 101 fi
68 done 102 done
69 103 return 1
70} 104}
71 105
72strip-flags() { 106strip-flags() {
73
74 local NEW_CFLAGS="" 107 local NEW_CFLAGS=""
75 local NEW_CXXFLAGS="" 108 local NEW_CXXFLAGS=""
109
110 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
111 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
112 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
113 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
114 fi
76 115
77 set -f 116 set -f
78 117
79 for x in ${CFLAGS} 118 for x in ${CFLAGS}
80 do 119 do
102 done 141 done
103 done 142 done
104 143
105 set +f 144 set +f
106 145
146 [ `use debug` ] \
147 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
148 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
149
107 export CFLAGS="${NEW_CFLAGS}" 150 export CFLAGS="${NEW_CFLAGS}"
108 export CXXFLAGS="${NEW_CXXFLAGS}" 151 export CXXFLAGS="${NEW_CXXFLAGS}"
109} 152}
110 153
111get-flag() { 154get-flag() {
116 echo "${f/-${findflag}=}" 159 echo "${f/-${findflag}=}"
117 return 160 return
118 fi 161 fi
119 done 162 done
120} 163}
164
165replace-sparc64-flags() {
166 local SPARC64_CPUS="ultrasparc v9"
167
168 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
169 then
170 for x in ${SPARC64_CPUS}
171 do
172 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
173 done
174 else
175 for x in ${SPARC64_CPUS}
176 do
177 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
178 done
179 fi
180
181 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
182 then
183 for x in ${SPARC64_CPUS}
184 do
185 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
186 done
187 else
188 for x in ${SPARC64_CPUS}
189 do
190 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
191 done
192 fi
193}

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