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Revision 1.40 Revision 1.88
1# Copyright 1999-2003 Gentoo Technologies, Inc. 1# Copyright 1999-2005 Gentoo Foundation
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 1.40 2004/03/12 11:21:15 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.88 2005/07/06 20:20:03 agriffis Exp $
4#
5# Author Bart Verwilst <verwilst@gentoo.org>
6 4
7ECLASS=flag-o-matic
8INHERITED="$INHERITED $ECLASS" 5INHERITED="$INHERITED $ECLASS"
6
7# need access to emktemp()
8inherit eutils toolchain-funcs multilib
9 9
10# 10#
11#### filter-flags <flags> #### 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# Matches only complete flags
16# Add extra flags to your current C[XX]FLAGS 16# Add extra flags to your current C[XX]FLAGS
17# 17#
18#### replace-flags <orig.flag> <new.flag> ### 18#### replace-flags <orig.flag> <new.flag> ###
19# Replace a flag by another one 19# Replace a flag by another one
20# 20#
21#### replace-cpu-flags <new.cpu> <old.cpus> ### 21#### replace-cpu-flags <old.cpus> <new.cpu> ###
22# Replace march/mcpu flags that specify <old.cpus> 22# Replace march/mcpu flags that specify <old.cpus>
23# with flags that specify <new.cpu> 23# with flags that specify <new.cpu>
24# 24#
25#### is-flag <flag> #### 25#### is-flag <flag> ####
26# Returns "true" if flag is set in C[XX]FLAGS 26# Returns "true" if flag is set in C[XX]FLAGS
47# will leave the user with -mfpmath=386 47# will leave the user with -mfpmath=386
48# 48#
49#### append-ldflags #### 49#### append-ldflags ####
50# Add extra flags to your current LDFLAGS 50# Add extra flags to your current LDFLAGS
51# 51#
52#### etexec-flags #### 52#### filter-ldflags <flags> ####
53# hooked function for hardened-gcc that appends 53# Remove particular flags from LDFLAGS
54# -yet_exec {C,CXX,LD}FLAGS when hardened-gcc is installed 54# Matches only complete flags
55# and a package is filtering -fPIC,-fpic, -fPIE, -fpie
56# 55#
57#### fstack-flags #### 56#### fstack-flags ####
58# hooked function for hardened-gcc that appends 57# hooked function for hardened gcc that appends
59# -yno_propolice to {C,CXX,LD}FLAGS when hardened-gcc is installed 58# -fno-stack-protector to {C,CXX,LD}FLAGS
60# and a package is filtering -fstack-protector, -fstack-protector-all 59# when a package is filtering -fstack-protector, -fstack-protector-all
60# notice: modern automatic specs files will also suppress -fstack-protector-all
61# when only -fno-stack-protector is given
62#
63#### has_pic ####
64# Returns true if the compiler by default or with current CFLAGS
65# builds position-independent code.
66#
67#### has_ssp_all ####
68# Returns true if the compiler by default or with current CFLAGS
69# generates stack smash protections for all functions
70#
71#### has_ssp ####
72# Returns true if the compiler by default or with current CFLAGS
73# generates stack smash protections for most vulnerable functions
61# 74#
62 75
63# C[XX]FLAGS that we allow in strip-flags 76# C[XX]FLAGS that we allow in strip-flags
64setup-allowed-flags() { 77setup-allowed-flags() {
65 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g" 78 if [[ -z ${ALLOWED_FLAGS} ]] ; then
66 case "${ARCH}" in 79 export ALLOWED_FLAGS="-pipe"
67 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 80 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
68 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 81 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
69 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 82 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
70 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 83 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
71 esac 84 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
85 fi
86 # allow a bunch of flags that negate features / control ABI
87 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
88 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
89 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
90 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
91 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
92 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
93 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
94 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias"
72 95
73 # C[XX]FLAGS that we are think is ok, but needs testing 96 # C[XX]FLAGS that we are think is ok, but needs testing
74 # NOTE: currently -Os have issues with gcc3 and K6* arch's 97 # NOTE: currently -Os have issues with gcc3 and K6* arch's
75 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 98 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
76 return 0 99 return 0
77} 100}
78 101
79filter-flags() { 102filter-flags() {
103 local x f fset
104 declare -a new_CFLAGS new_CXXFLAGS
105
80 for x in "$@" ; do 106 for x in "$@" ; do
81 case "${x}" in 107 case "${x}" in
82 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; 108 -fPIC|-fpic|-fPIE|-fpie|-pie)
109 append-flags `test_flag -fno-pie`;;
83 -fstack-protector|-fstack-protector-all) fstack-flags;; 110 -fstack-protector|-fstack-protector-all)
84 *) ;; 111 fstack-flags;;
85 esac 112 esac
86 done 113 done
87 114
88 # we do this fancy spacing stuff so as to not filter 115 for fset in CFLAGS CXXFLAGS; do
89 # out part of a flag ... we want flag atoms ! :D 116 # Looping over the flags instead of using a global
90 CFLAGS=" ${CFLAGS} " 117 # substitution ensures that we're working with flag atoms.
91 CXXFLAGS=" ${CXXFLAGS} " 118 # Otherwise globs like -O* have the potential to wipe out the
119 # list of flags.
120 for f in ${!fset}; do
92 for x in "$@" ; do 121 for x in "$@"; do
93 CFLAGS="${CFLAGS// ${x} / }" 122 # Note this should work with globs like -O*
94 CXXFLAGS="${CXXFLAGS// ${x} / }" 123 [[ ${f} == ${x} ]] && continue 2
124 done
125 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
95 done 126 done
96 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 127 eval export ${fset}=\${new_${fset}\[*]}
97 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 128 done
129
98 return 0 130 return 0
99} 131}
100 132
101filter-lfs-flags() { 133filter-lfs-flags() {
102 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 134 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
103} 135}
104 136
137append-lfs-flags() {
138 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
139}
140
105append-flags() { 141append-flags() {
142 [[ -z $* ]] && return 0
106 export CFLAGS="${CFLAGS} $@" 143 export CFLAGS="${CFLAGS} $*"
107 export CXXFLAGS="${CXXFLAGS} $@" 144 export CXXFLAGS="${CXXFLAGS} $*"
108 [ "`is-flag -fno-stack-protector`" -o "`is-flag -fno-stack-protector-all`" ] && fstack-flags 145 [ -n "`is-flag -fno-stack-protector`" -o \
146 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
109 return 0 147 return 0
110} 148}
111 149
112replace-flags() { 150replace-flags() {
113 # we do this fancy spacing stuff so as to not filter 151 local f fset
114 # out part of a flag ... we want flag atoms ! :D 152 declare -a new_CFLAGS new_CXXFLAGS
115 CFLAGS=" ${CFLAGS} " 153
116 CXXFLAGS=" ${CXXFLAGS} " 154 for fset in CFLAGS CXXFLAGS; do
117 CFLAGS="${CFLAGS// ${1} / ${2} }" 155 # Looping over the flags instead of using a global
118 CXXFLAGS="${CXXFLAGS// ${1} / ${2} }" 156 # substitution ensures that we're working with flag atoms.
119 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 157 # Otherwise globs like -O* have the potential to wipe out the
120 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 158 # list of flags.
159 for f in ${!fset}; do
160 # Note this should work with globs like -O*
161 [[ ${f} == ${1} ]] && f=${2}
162 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
163 done
164 eval export ${fset}=\${new_${fset}\[*]}
165 done
166
121 return 0 167 return 0
122} 168}
123 169
124replace-cpu-flags() { 170replace-cpu-flags() {
125 local newcpu="$1" ; shift 171 local newcpu="$#" ; newcpu="${!newcpu}"
126 local oldcpu="" 172 while [ $# -gt 1 ] ; do
127 for oldcpu in "$@" ; do 173 # quote to make sure that no globbing is done (particularly on
174 # ${oldcpu} prior to calling replace-flags
128 replace-flags -march=${oldcpu} -march=${newcpu} 175 replace-flags "-march=${1}" "-march=${newcpu}"
129 replace-flags -mcpu=${oldcpu} -mcpu=${newcpu} 176 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
130 replace-flags -mtune=${oldcpu} -mtune=${newcpu} 177 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
178 shift
131 done 179 done
132 return 0 180 return 0
133} 181}
134 182
135is-flag() { 183is-flag() {
184 local x
185
136 for x in ${CFLAGS} ${CXXFLAGS} ; do 186 for x in ${CFLAGS} ${CXXFLAGS} ; do
187 # Note this should work with globs like -mcpu=ultrasparc*
137 if [ "${x}" == "$1" ] ; then 188 if [[ ${x} == ${1} ]]; then
138 echo true 189 echo true
139 return 0 190 return 0
140 fi 191 fi
141 done 192 done
142 return 1 193 return 1
143} 194}
144 195
145filter-mfpmath() { 196filter-mfpmath() {
197 local orig_mfpmath new_math prune_math
198
146 # save the original -mfpmath flag 199 # save the original -mfpmath flag
147 local orig_mfpmath="`get-flag -mfpmath`" 200 orig_mfpmath="`get-flag -mfpmath`"
148 # get the value of the current -mfpmath flag 201 # get the value of the current -mfpmath flag
149 local new_math=" `get-flag mfpmath | tr , ' '` " 202 new_math=" `get-flag mfpmath | tr , ' '` "
150 # figure out which math values are to be removed 203 # figure out which math values are to be removed
151 local prune_math="" 204 prune_math=""
152 for prune_math in "$@" ; do 205 for prune_math in "$@" ; do
153 new_math="${new_math/ ${prune_math} / }" 206 new_math="${new_math/ ${prune_math} / }"
154 done 207 done
155 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" 208 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
156 209
165 fi 218 fi
166 return 0 219 return 0
167} 220}
168 221
169strip-flags() { 222strip-flags() {
223 local x y flag NEW_CFLAGS NEW_CXXFLAGS
224
170 setup-allowed-flags 225 setup-allowed-flags
171 226
172 local NEW_CFLAGS="" 227 local NEW_CFLAGS=""
173 local NEW_CXXFLAGS="" 228 local NEW_CXXFLAGS=""
174 229
175 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 230 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
176 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then 231 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
177 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
178 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 232 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
179 fi 233 fi
180 234
181 set -f 235 set -f # disable pathname expansion
182 236
183 for x in ${CFLAGS} 237 for x in ${CFLAGS}; do
184 do
185 for y in ${ALLOWED_FLAGS} 238 for y in ${ALLOWED_FLAGS}; do
186 do
187 flag=${x%%=*} 239 flag=${x%%=*}
188 if [ "${flag%%${y}}" = "" ] 240 if [ "${flag%%${y}}" = "" ] ; then
189 then
190 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 241 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
191 break 242 break
192 fi 243 fi
193 done 244 done
194 done 245 done
195 246
196 for x in ${CXXFLAGS} 247 for x in ${CXXFLAGS}; do
197 do
198 for y in ${ALLOWED_FLAGS} 248 for y in ${ALLOWED_FLAGS}; do
199 do
200 flag=${x%%=*} 249 flag=${x%%=*}
201 if [ "${flag%%${y}}" = "" ] 250 if [ "${flag%%${y}}" = "" ] ; then
202 then
203 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 251 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
204 break 252 break
205 fi 253 fi
206 done 254 done
207 done 255 done
212 fi 260 fi
213 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then 261 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
214 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" 262 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
215 fi 263 fi
216 264
217 set +f 265 set +f # re-enable pathname expansion
218
219 [ `use debug` ] \
220 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
221 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
222 266
223 export CFLAGS="${NEW_CFLAGS}" 267 export CFLAGS="${NEW_CFLAGS}"
224 export CXXFLAGS="${NEW_CXXFLAGS}" 268 export CXXFLAGS="${NEW_CXXFLAGS}"
225 return 0 269 return 0
226} 270}
227 271
228test_flag() { 272test_flag() {
229 if gcc -S -xc "$@" -o /dev/null /dev/null >/dev/null 2>&1; then 273 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then
230 echo "$@" 274 printf "%s\n" "$*"
231 return 0 275 return 0
232 fi 276 fi
233 return 1 277 return 1
234} 278}
235 279
280test_version_info() {
281 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
282 return 0
283 else
284 return 1
285 fi
286}
287
236strip-unsupported-flags() { 288strip-unsupported-flags() {
289 local NEW_CFLAGS NEW_CXXFLAGS
290
237 for x in ${CFLAGS} ; do 291 for x in ${CFLAGS} ; do
238 NEW_CFLAGS=${NEW_CFLAGS}" ""`test_flag ${x}`" 292 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
239 done 293 done
240 for x in ${CXXFLAGS} ; do 294 for x in ${CXXFLAGS} ; do
241 NEW_CXXFLAGS=${NEW_CXXFLAGS}" ""`test_flag ${x}`" 295 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
242 done 296 done
243 297
244 export CFLAGS="${NEW_CFLAGS}" 298 export CFLAGS="${NEW_CFLAGS}"
245 export CXXFLAGS="${NEW_CXXFLAGS}" 299 export CXXFLAGS="${NEW_CXXFLAGS}"
246} 300}
247 301
248get-flag() { 302get-flag() {
303 local f findflag="$1"
304
249 # this code looks a little flaky but seems to work for 305 # this code looks a little flaky but seems to work for
250 # everything we want ... 306 # everything we want ...
251 # for example, if CFLAGS="-march=i686": 307 # for example, if CFLAGS="-march=i686":
252 # `get-flags -march` == "-march=i686" 308 # `get-flag -march` == "-march=i686"
253 # `get-flags march` == "i686" 309 # `get-flag march` == "i686"
254 local findflag="$1"
255 for f in ${CFLAGS} ${CXXFLAGS} ; do 310 for f in ${CFLAGS} ${CXXFLAGS} ; do
256 if [ "${f/${findflag}}" != "${f}" ] ; then 311 if [ "${f/${findflag}}" != "${f}" ] ; then
257 echo "${f/-${findflag}=}" 312 printf "%s\n" "${f/-${findflag}=}"
258 return 0 313 return 0
259 fi 314 fi
260 done 315 done
261 return 1 316 return 1
262} 317}
263 318
319has_hardened() {
320 test_version_info Hardened && return 0
321 # the specs file wont exist unless gcc has GCC_SPECS support
322 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
323 return 0
324 return 1
325}
326
327# indicate whether PIC is set
328has_pic() {
329 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
330 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
331 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
332 return 1
333}
334
335# indicate whether PIE is set
336has_pie() {
337 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
338 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
339 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__)" ] && return 0
340 # test PIC while waiting for specs to be updated to generate __PIE__
341 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
342 return 1
343}
344
345# indicate whether code for SSP is being generated for all functions
346has_ssp_all() {
347 # note; this matches only -fstack-protector-all
348 [ "${CFLAGS/-fstack-protector-all}" != "${CFLAGS}" ] && return 0
349 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__)" ] && return 0
350 return 1
351}
352
353# indicate whether code for SSP is being generated
354has_ssp() {
355 # note; this matches both -fstack-protector and -fstack-protector-all
356 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
357 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0
358 return 1
359}
360
361has_m64() {
362 # this doesnt test if the flag is accepted, it tests if the flag
363 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
364 # please dont replace this function with test_flag in some future
365 # clean-up!
366 local temp="$(emktemp)"
367 echo "int main() { return(0); }" > ${temp}.c
368 MY_CC=$(tc-getCC)
369 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
370 local ret=$?
371 rm -f ${temp}.c
372 [ "$ret" != "1" ] && return 0
373 return 1
374}
375
376has_m32() {
377 # this doesnt test if the flag is accepted, it tests if the flag
378 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
379 # please dont replace this function with test_flag in some future
380 # clean-up!
381
382 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
383
384 local temp="$(emktemp)"
385 echo "int main() { return(0); }" > ${temp}.c
386 MY_CC=$(tc-getCC)
387 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
388 local ret=$?
389 rm -f ${temp}.c
390 [ "$ret" != "1" ] && return 0
391 return 1
392}
393
264replace-sparc64-flags() { 394replace-sparc64-flags() {
265 local SPARC64_CPUS="ultrasparc v9" 395 local SPARC64_CPUS="ultrasparc v9"
266 396
267 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] 397 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
268 then
269 for x in ${SPARC64_CPUS} 398 for x in ${SPARC64_CPUS}; do
270 do
271 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 399 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
272 done 400 done
273 else 401 else
274 for x in ${SPARC64_CPUS} 402 for x in ${SPARC64_CPUS}; do
275 do
276 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 403 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
277 done 404 done
278 fi 405 fi
279 406
280 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] 407 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
281 then
282 for x in ${SPARC64_CPUS} 408 for x in ${SPARC64_CPUS}; do
283 do
284 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 409 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
285 done 410 done
286 else 411 else
287 for x in ${SPARC64_CPUS} 412 for x in ${SPARC64_CPUS}; do
288 do
289 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 413 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
290 done 414 done
291 fi 415 fi
416
417 export CFLAGS CXXFLAGS
292} 418}
293 419
294append-ldflags() { 420append-ldflags() {
421 export LDFLAGS="${LDFLAGS} $*"
422 return 0
423}
424
425filter-ldflags() {
426 local x
427
428 # we do this fancy spacing stuff so as to not filter
429 # out part of a flag ... we want flag atoms ! :D
295 LDFLAGS="${LDFLAGS} $@" 430 LDFLAGS=" ${LDFLAGS} "
431 for x in "$@" ; do
432 LDFLAGS=${LDFLAGS// ${x} / }
433 done
434 [[ -z ${LDFLAGS// } ]] \
435 && LDFLAGS="" \
436 || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
437 export LDFLAGS
296 return 0 438 return 0
297}
298
299etexec-flags() {
300 has_version sys-devel/hardened-gcc
301 if [ $? == 0 ] ; then
302 if [ "`is-flag -yet_exec`" != "true" ]; then
303 debug-print ">>> appending flags -yet_exec"
304 append-flags -yet_exec
305 append-ldflags -yet_exec
306 fi
307 fi
308} 439}
309 440
310fstack-flags() { 441fstack-flags() {
311 has_version sys-devel/hardened-gcc 442 if has_ssp; then
312 if [ $? == 0 ] ; then 443 [ -z "`is-flag -fno-stack-protector`" ] &&
313 if [ "`is-flag -yno_propolice`" != "true" ]; then 444 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
314 debug-print ">>> appending flags -yno_propolice"
315 append-flags -yno_propolice
316 append-ldflags -yno_propolice
317 fi 445 fi
318 fi 446 return 0
319} 447}
448
449# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
450# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
451# fixes.
452#
453# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
454gcc2-flags() {
455 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
456 CFLAGS=${CFLAGS//-mtune=/-mcpu=}
457 CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
458 fi
459
460 replace-cpu-flags k6-{2,3} k6
461 replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
462
463 replace-cpu-flags pentium-mmx i586
464 replace-cpu-flags pentium{2,3,4} i686
465
466 replace-cpu-flags ev6{7,8} ev6
467
468 export CFLAGS CXXFLAGS
469}

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