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Revision 1.27 - (hide annotations) (download)
Wed Sep 24 05:51:32 2003 UTC (10 years, 10 months ago) by solar
Branch: MAIN
Changes since 1.26: +47 -1 lines
required hardened-gcc hooks for fPIC and propolice

1 vapier 1.12 # Copyright 1999-2003 Gentoo Technologies, Inc.
2 verwilst 1.1 # Distributed under the terms of the GNU General Public License v2
3 solar 1.27 # $Header: /home/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.26 2003/09/15 15:21:04 vapier Exp $
4 vapier 1.12 #
5 verwilst 1.1 # Author Bart Verwilst <verwilst@gentoo.org>
6 azarah 1.8
7 verwilst 1.1 ECLASS=flag-o-matic
8 danarmak 1.6 INHERITED="$INHERITED $ECLASS"
9 azarah 1.8
10 verwilst 1.2 #
11 vapier 1.18 #### filter-flags <flags> ####
12 verwilst 1.3 # Remove particular flags from C[XX]FLAGS
13 vapier 1.18 # Matches only complete flags
14 verwilst 1.2 #
15 vapier 1.18 #### append-flags <flags> ####
16 verwilst 1.3 # Add extra flags to your current C[XX]FLAGS
17     #
18 verwilst 1.4 #### replace-flags <orig.flag> <new.flag> ###
19 verwilst 1.3 # Replace a flag by another one
20     #
21 danarmak 1.7 #### is-flag <flag> ####
22     # Returns "true" if flag is set in C[XX]FLAGS
23 vapier 1.18 # Matches only complete a flag
24 danarmak 1.7 #
25 azarah 1.8 #### strip-flags ####
26     # Strip C[XX]FLAGS of everything except known
27     # good options.
28     #
29 vapier 1.10 #### get-flag <flag> ####
30     # Find and echo the value for a particular flag
31     #
32 joker 1.16 #### replace-sparc64-flags ####
33     # Sets mcpu to v8 and uses the original value
34     # as mtune if none specified.
35     #
36 vapier 1.26 #### filter-mfpmath <math types> ####
37     # Remove specified math types from the fpmath specification
38     # If the user has -mfpmath=sse,386, running `filter-mfpmath sse`
39     # will leave the user with -mfpmath=386
40 solar 1.27 #
41     #### append-ldflags ####
42     # Add extra flags to your current LDFLAGS
43     #
44     #### etexec-flags ####
45     # hooked function for hardened-gcc that appends
46     # -yet_exec {C,CXX,LD}FLAGS when hardened-gcc is installed
47     # and a package is filtering -fPIC
48     #
49     #### fstack-flags ####
50     # hooked function for hardened-gcc that appends
51     # -yno_propolice to {C,CXX,LD}FLAGS when hardened-gcc is installed
52     # and a package is filtering -fstack-protector
53     #
54 verwilst 1.3
55 azarah 1.17 # C[XX]FLAGS that we allow in strip-flags
56 vapier 1.22 ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
57     case "${ARCH}" in
58     mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
59 tester 1.23 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
60 agriffis 1.25 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
61 vapier 1.22 esac
62 verwilst 1.13
63 azarah 1.17 # C[XX]FLAGS that we are think is ok, but needs testing
64     # NOTE: currently -Os have issues with gcc3 and K6* arch's
65     UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
66 aliz 1.24
67     filter-mfpmath() {
68     for a in $CFLAGS; do
69     if [ "${a:0:8}" == "-mfpmath" ]; then
70     orig_mfpmath=$a
71     fi
72     done
73    
74     mfpmath="$( echo $orig_mfpmath | awk -F '=' '{print $2}' | tr "," " " )"
75     for b in $@; do
76     mfpmath="${mfpmath/$b}"
77     done
78    
79     if [ -z "${mfpmath/ }" ]; then
80     filter-flags "$orig_mfpmath"
81     else
82     new_mfpmath="-mfpmath=$( echo $mfpmath | sed -e "s/ /,/g" -e "s/,,/,/g" )"
83     replace-flags "$orig_mfpmath" "$new_mfpmath"
84     fi
85     }
86 verwilst 1.13
87 vapier 1.18 filter-flags() {
88 solar 1.27 # we do two loops to avoid the first and last char from being chomped.
89     for x in $@ ; do
90     case "${x}" in
91     -fPIC) etexec-flags;;
92     -fstack-protector) fstack-flags;;
93     *) ;;
94     esac
95     done
96 vapier 1.18 # we do this fancy spacing stuff so as to not filter
97     # out part of a flag ... we want flag atoms ! :D
98 agriffis 1.25 CFLAGS=" ${CFLAGS} "
99     CXXFLAGS=" ${CXXFLAGS} "
100 vapier 1.18 for x in $@ ; do
101 agriffis 1.25 CFLAGS="${CFLAGS/ ${x} / }"
102     CXXFLAGS="${CXXFLAGS/ ${x} / }"
103 verwilst 1.1 done
104 agriffis 1.25 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
105     CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
106 verwilst 1.2 }
107    
108 vapier 1.18 append-flags() {
109 vapier 1.19 CFLAGS="${CFLAGS} $@"
110     CXXFLAGS="${CXXFLAGS} $@"
111 solar 1.27 for x in $@; do
112     [ "${x}" = "-fno-stack-protector" ] &&
113     fstack-flags
114     done
115 verwilst 1.1 }
116    
117 vapier 1.18 replace-flags() {
118 seemant 1.9 CFLAGS="${CFLAGS/${1}/${2} }"
119     CXXFLAGS="${CXXFLAGS/${1}/${2} }"
120 danarmak 1.7 }
121    
122     is-flag() {
123 vapier 1.18 for x in ${CFLAGS} ${CXXFLAGS} ; do
124     if [ "${x}" == "$1" ] ; then
125 azarah 1.8 echo true
126 vapier 1.18 return 0
127     fi
128 danarmak 1.7 done
129 vapier 1.18 return 1
130 verwilst 1.1 }
131 azarah 1.8
132     strip-flags() {
133     local NEW_CFLAGS=""
134     local NEW_CXXFLAGS=""
135    
136 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
137 vapier 1.20 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
138     [ `use debug` ] && einfo "Enabling the use of some unstable flags"
139 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
140     fi
141    
142 azarah 1.8 set -f
143    
144     for x in ${CFLAGS}
145     do
146     for y in ${ALLOWED_FLAGS}
147     do
148 lostlogic 1.14 flag=${x%%=*}
149     if [ "${flag%%${y}}" = "" ]
150 azarah 1.8 then
151 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
152     break
153 azarah 1.8 fi
154     done
155     done
156    
157     for x in ${CXXFLAGS}
158     do
159     for y in ${ALLOWED_FLAGS}
160     do
161 lostlogic 1.14 flag=${x%%=*}
162     if [ "${flag%%${y}}" = "" ]
163 azarah 1.8 then
164 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
165     break
166 azarah 1.8 fi
167     done
168     done
169    
170     set +f
171    
172 vapier 1.20 [ `use debug` ] \
173     && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
174     && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
175    
176 azarah 1.8 export CFLAGS="${NEW_CFLAGS}"
177     export CXXFLAGS="${NEW_CXXFLAGS}"
178     }
179    
180 vapier 1.10 get-flag() {
181     local findflag="$1"
182    
183     for f in ${CFLAGS} ${CXXFLAGS} ; do
184     if [ "${f/${findflag}}" != "${f}" ] ; then
185     echo "${f/-${findflag}=}"
186     return
187     fi
188     done
189 joker 1.16 }
190    
191 vapier 1.18 replace-sparc64-flags() {
192 joker 1.16 local SPARC64_CPUS="ultrasparc v9"
193    
194     if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
195     then
196     for x in ${SPARC64_CPUS}
197     do
198     CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
199     done
200     else
201     for x in ${SPARC64_CPUS}
202     do
203     CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
204     done
205     fi
206    
207     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
208     then
209     for x in ${SPARC64_CPUS}
210     do
211     CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
212     done
213     else
214     for x in ${SPARC64_CPUS}
215     do
216     CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
217     done
218     fi
219 solar 1.27 }
220    
221     append-ldflags() {
222     LDFLAGS="${LDFLAGS} $@"
223     }
224    
225     etexec-flags() {
226     has_version 'sys-devel/hardened-gcc' && {
227     debug-print ">>> appending flags -yet_exec"
228     append-flags -yet_exec
229     append-ldflags -yet_exec
230     }
231     }
232    
233     fstack-flags() {
234     has_version 'sys-devel/hardened-gcc' && {
235     debug-print ">>> appending flags -yno_propolice"
236     append-flags -yno_propolice
237     append-ldflags -yno_propolice
238     }
239 vapier 1.10 }

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