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Revision 1.40 Revision 1.91
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 1.91 2005/07/22 21:47:51 vapier Exp $
4#
5# Author Bart Verwilst <verwilst@gentoo.org>
6 4
7ECLASS=flag-o-matic 5
8INHERITED="$INHERITED $ECLASS" 6# need access to emktemp()
7inherit eutils toolchain-funcs multilib
9 8
10# 9#
11#### filter-flags <flags> #### 10#### filter-flags <flags> ####
12# Remove particular flags from C[XX]FLAGS 11# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags 12# Matches only complete flags
16# Add extra flags to your current C[XX]FLAGS 15# Add extra flags to your current C[XX]FLAGS
17# 16#
18#### replace-flags <orig.flag> <new.flag> ### 17#### replace-flags <orig.flag> <new.flag> ###
19# Replace a flag by another one 18# Replace a flag by another one
20# 19#
21#### replace-cpu-flags <new.cpu> <old.cpus> ### 20#### replace-cpu-flags <old.cpus> <new.cpu> ###
22# Replace march/mcpu flags that specify <old.cpus> 21# Replace march/mcpu flags that specify <old.cpus>
23# with flags that specify <new.cpu> 22# with flags that specify <new.cpu>
24# 23#
25#### is-flag <flag> #### 24#### is-flag <flag> ####
26# Returns "true" if flag is set in C[XX]FLAGS 25# Returns "true" if flag is set in C[XX]FLAGS
47# will leave the user with -mfpmath=386 46# will leave the user with -mfpmath=386
48# 47#
49#### append-ldflags #### 48#### append-ldflags ####
50# Add extra flags to your current LDFLAGS 49# Add extra flags to your current LDFLAGS
51# 50#
52#### etexec-flags #### 51#### filter-ldflags <flags> ####
53# hooked function for hardened-gcc that appends 52# Remove particular flags from LDFLAGS
54# -yet_exec {C,CXX,LD}FLAGS when hardened-gcc is installed 53# Matches only complete flags
55# and a package is filtering -fPIC,-fpic, -fPIE, -fpie
56# 54#
57#### fstack-flags #### 55#### fstack-flags ####
58# hooked function for hardened-gcc that appends 56# hooked function for hardened gcc that appends
59# -yno_propolice to {C,CXX,LD}FLAGS when hardened-gcc is installed 57# -fno-stack-protector to {C,CXX,LD}FLAGS
60# and a package is filtering -fstack-protector, -fstack-protector-all 58# when a package is filtering -fstack-protector, -fstack-protector-all
59# notice: modern automatic specs files will also suppress -fstack-protector-all
60# when only -fno-stack-protector is given
61#
62#### has_pic ####
63# Returns true if the compiler by default or with current CFLAGS
64# builds position-independent code.
65#
66#### has_ssp_all ####
67# Returns true if the compiler by default or with current CFLAGS
68# generates stack smash protections for all functions
69#
70#### has_ssp ####
71# Returns true if the compiler by default or with current CFLAGS
72# generates stack smash protections for most vulnerable functions
61# 73#
62 74
63# C[XX]FLAGS that we allow in strip-flags 75# C[XX]FLAGS that we allow in strip-flags
64setup-allowed-flags() { 76setup-allowed-flags() {
65 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g" 77 if [[ -z ${ALLOWED_FLAGS} ]] ; then
66 case "${ARCH}" in 78 export ALLOWED_FLAGS="-pipe"
67 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 79 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
68 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 80 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
69 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 81 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
70 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 82 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
71 esac 83 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
84 fi
85 # allow a bunch of flags that negate features / control ABI
86 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
87 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
88 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
89 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
90 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
91 -mieee -mieee-with-inexact \
92 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
93 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
94 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
95 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias"
72 96
73 # C[XX]FLAGS that we are think is ok, but needs testing 97 # C[XX]FLAGS that we are think is ok, but needs testing
74 # NOTE: currently -Os have issues with gcc3 and K6* arch's 98 # NOTE: currently -Os have issues with gcc3 and K6* arch's
75 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 99 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
76 return 0 100 return 0
77} 101}
78 102
79filter-flags() { 103filter-flags() {
104 local x f fset
105 declare -a new_CFLAGS new_CXXFLAGS
106
80 for x in "$@" ; do 107 for x in "$@" ; do
81 case "${x}" in 108 case "${x}" in
82 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; 109 -fPIC|-fpic|-fPIE|-fpie|-pie)
110 append-flags `test_flag -fno-pie`;;
83 -fstack-protector|-fstack-protector-all) fstack-flags;; 111 -fstack-protector|-fstack-protector-all)
84 *) ;; 112 fstack-flags;;
85 esac 113 esac
86 done 114 done
87 115
88 # we do this fancy spacing stuff so as to not filter 116 for fset in CFLAGS CXXFLAGS; do
89 # out part of a flag ... we want flag atoms ! :D 117 # Looping over the flags instead of using a global
90 CFLAGS=" ${CFLAGS} " 118 # substitution ensures that we're working with flag atoms.
91 CXXFLAGS=" ${CXXFLAGS} " 119 # Otherwise globs like -O* have the potential to wipe out the
120 # list of flags.
121 for f in ${!fset}; do
92 for x in "$@" ; do 122 for x in "$@"; do
93 CFLAGS="${CFLAGS// ${x} / }" 123 # Note this should work with globs like -O*
94 CXXFLAGS="${CXXFLAGS// ${x} / }" 124 [[ ${f} == ${x} ]] && continue 2
125 done
126 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
95 done 127 done
96 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 128 eval export ${fset}=\${new_${fset}\[*]}
97 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 129 done
130
98 return 0 131 return 0
99} 132}
100 133
101filter-lfs-flags() { 134filter-lfs-flags() {
102 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 135 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
103} 136}
104 137
138append-lfs-flags() {
139 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
140}
141
105append-flags() { 142append-flags() {
143 [[ -z $* ]] && return 0
106 export CFLAGS="${CFLAGS} $@" 144 export CFLAGS="${CFLAGS} $*"
107 export CXXFLAGS="${CXXFLAGS} $@" 145 export CXXFLAGS="${CXXFLAGS} $*"
108 [ "`is-flag -fno-stack-protector`" -o "`is-flag -fno-stack-protector-all`" ] && fstack-flags 146 [ -n "`is-flag -fno-stack-protector`" -o \
147 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
109 return 0 148 return 0
110} 149}
111 150
112replace-flags() { 151replace-flags() {
113 # we do this fancy spacing stuff so as to not filter 152 local f fset
114 # out part of a flag ... we want flag atoms ! :D 153 declare -a new_CFLAGS new_CXXFLAGS
115 CFLAGS=" ${CFLAGS} " 154
116 CXXFLAGS=" ${CXXFLAGS} " 155 for fset in CFLAGS CXXFLAGS; do
117 CFLAGS="${CFLAGS// ${1} / ${2} }" 156 # Looping over the flags instead of using a global
118 CXXFLAGS="${CXXFLAGS// ${1} / ${2} }" 157 # substitution ensures that we're working with flag atoms.
119 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 158 # Otherwise globs like -O* have the potential to wipe out the
120 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 159 # list of flags.
160 for f in ${!fset}; do
161 # Note this should work with globs like -O*
162 [[ ${f} == ${1} ]] && f=${2}
163 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
164 done
165 eval export ${fset}=\${new_${fset}\[*]}
166 done
167
121 return 0 168 return 0
122} 169}
123 170
124replace-cpu-flags() { 171replace-cpu-flags() {
125 local newcpu="$1" ; shift 172 local newcpu="$#" ; newcpu="${!newcpu}"
126 local oldcpu="" 173 while [ $# -gt 1 ] ; do
127 for oldcpu in "$@" ; do 174 # quote to make sure that no globbing is done (particularly on
175 # ${oldcpu} prior to calling replace-flags
128 replace-flags -march=${oldcpu} -march=${newcpu} 176 replace-flags "-march=${1}" "-march=${newcpu}"
129 replace-flags -mcpu=${oldcpu} -mcpu=${newcpu} 177 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
130 replace-flags -mtune=${oldcpu} -mtune=${newcpu} 178 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
179 shift
131 done 180 done
132 return 0 181 return 0
133} 182}
134 183
135is-flag() { 184is-flag() {
185 local x
186
136 for x in ${CFLAGS} ${CXXFLAGS} ; do 187 for x in ${CFLAGS} ${CXXFLAGS} ; do
188 # Note this should work with globs like -mcpu=ultrasparc*
137 if [ "${x}" == "$1" ] ; then 189 if [[ ${x} == ${1} ]]; then
138 echo true 190 echo true
139 return 0 191 return 0
140 fi 192 fi
141 done 193 done
142 return 1 194 return 1
143} 195}
144 196
145filter-mfpmath() { 197filter-mfpmath() {
198 local orig_mfpmath new_math prune_math
199
146 # save the original -mfpmath flag 200 # save the original -mfpmath flag
147 local orig_mfpmath="`get-flag -mfpmath`" 201 orig_mfpmath="`get-flag -mfpmath`"
148 # get the value of the current -mfpmath flag 202 # get the value of the current -mfpmath flag
149 local new_math=" `get-flag mfpmath | tr , ' '` " 203 new_math=" `get-flag mfpmath | tr , ' '` "
150 # figure out which math values are to be removed 204 # figure out which math values are to be removed
151 local prune_math="" 205 prune_math=""
152 for prune_math in "$@" ; do 206 for prune_math in "$@" ; do
153 new_math="${new_math/ ${prune_math} / }" 207 new_math="${new_math/ ${prune_math} / }"
154 done 208 done
155 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" 209 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
156 210
165 fi 219 fi
166 return 0 220 return 0
167} 221}
168 222
169strip-flags() { 223strip-flags() {
224 local x y flag NEW_CFLAGS NEW_CXXFLAGS
225
170 setup-allowed-flags 226 setup-allowed-flags
171 227
172 local NEW_CFLAGS="" 228 local NEW_CFLAGS=""
173 local NEW_CXXFLAGS="" 229 local NEW_CXXFLAGS=""
174 230
175 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 231 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
176 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then 232 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
177 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
178 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 233 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
179 fi 234 fi
180 235
181 set -f 236 set -f # disable pathname expansion
182 237
183 for x in ${CFLAGS} 238 for x in ${CFLAGS}; do
184 do
185 for y in ${ALLOWED_FLAGS} 239 for y in ${ALLOWED_FLAGS}; do
186 do
187 flag=${x%%=*} 240 flag=${x%%=*}
188 if [ "${flag%%${y}}" = "" ] 241 if [ "${flag%%${y}}" = "" ] ; then
189 then
190 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 242 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
191 break 243 break
192 fi 244 fi
193 done 245 done
194 done 246 done
195 247
196 for x in ${CXXFLAGS} 248 for x in ${CXXFLAGS}; do
197 do
198 for y in ${ALLOWED_FLAGS} 249 for y in ${ALLOWED_FLAGS}; do
199 do
200 flag=${x%%=*} 250 flag=${x%%=*}
201 if [ "${flag%%${y}}" = "" ] 251 if [ "${flag%%${y}}" = "" ] ; then
202 then
203 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 252 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
204 break 253 break
205 fi 254 fi
206 done 255 done
207 done 256 done
212 fi 261 fi
213 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then 262 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
214 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" 263 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
215 fi 264 fi
216 265
217 set +f 266 set +f # re-enable pathname expansion
218
219 [ `use debug` ] \
220 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
221 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
222 267
223 export CFLAGS="${NEW_CFLAGS}" 268 export CFLAGS="${NEW_CFLAGS}"
224 export CXXFLAGS="${NEW_CXXFLAGS}" 269 export CXXFLAGS="${NEW_CXXFLAGS}"
225 return 0 270 return 0
226} 271}
227 272
228test_flag() { 273test_flag() {
229 if gcc -S -xc "$@" -o /dev/null /dev/null >/dev/null 2>&1; then 274 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then
230 echo "$@" 275 printf "%s\n" "$*"
231 return 0 276 return 0
232 fi 277 fi
233 return 1 278 return 1
234} 279}
235 280
281test_version_info() {
282 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
283 return 0
284 else
285 return 1
286 fi
287}
288
236strip-unsupported-flags() { 289strip-unsupported-flags() {
290 local NEW_CFLAGS NEW_CXXFLAGS
291
237 for x in ${CFLAGS} ; do 292 for x in ${CFLAGS} ; do
238 NEW_CFLAGS=${NEW_CFLAGS}" ""`test_flag ${x}`" 293 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
239 done 294 done
240 for x in ${CXXFLAGS} ; do 295 for x in ${CXXFLAGS} ; do
241 NEW_CXXFLAGS=${NEW_CXXFLAGS}" ""`test_flag ${x}`" 296 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
242 done 297 done
243 298
244 export CFLAGS="${NEW_CFLAGS}" 299 export CFLAGS="${NEW_CFLAGS}"
245 export CXXFLAGS="${NEW_CXXFLAGS}" 300 export CXXFLAGS="${NEW_CXXFLAGS}"
246} 301}
247 302
248get-flag() { 303get-flag() {
304 local f findflag="$1"
305
249 # this code looks a little flaky but seems to work for 306 # this code looks a little flaky but seems to work for
250 # everything we want ... 307 # everything we want ...
251 # for example, if CFLAGS="-march=i686": 308 # for example, if CFLAGS="-march=i686":
252 # `get-flags -march` == "-march=i686" 309 # `get-flag -march` == "-march=i686"
253 # `get-flags march` == "i686" 310 # `get-flag march` == "i686"
254 local findflag="$1"
255 for f in ${CFLAGS} ${CXXFLAGS} ; do 311 for f in ${CFLAGS} ${CXXFLAGS} ; do
256 if [ "${f/${findflag}}" != "${f}" ] ; then 312 if [ "${f/${findflag}}" != "${f}" ] ; then
257 echo "${f/-${findflag}=}" 313 printf "%s\n" "${f/-${findflag}=}"
258 return 0 314 return 0
259 fi 315 fi
260 done 316 done
261 return 1 317 return 1
262} 318}
263 319
320has_hardened() {
321 test_version_info Hardened && return 0
322 # the specs file wont exist unless gcc has GCC_SPECS support
323 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
324 return 0
325 return 1
326}
327
328# indicate whether PIC is set
329has_pic() {
330 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
331 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
332 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
333 return 1
334}
335
336# indicate whether PIE is set
337has_pie() {
338 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
339 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
340 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__)" ] && return 0
341 # test PIC while waiting for specs to be updated to generate __PIE__
342 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
343 return 1
344}
345
346# indicate whether code for SSP is being generated for all functions
347has_ssp_all() {
348 # note; this matches only -fstack-protector-all
349 [ "${CFLAGS/-fstack-protector-all}" != "${CFLAGS}" ] && return 0
350 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__)" ] && return 0
351 return 1
352}
353
354# indicate whether code for SSP is being generated
355has_ssp() {
356 # note; this matches both -fstack-protector and -fstack-protector-all
357 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
358 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0
359 return 1
360}
361
362has_m64() {
363 # this doesnt test if the flag is accepted, it tests if the flag
364 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
365 # please dont replace this function with test_flag in some future
366 # clean-up!
367 local temp="$(emktemp)"
368 echo "int main() { return(0); }" > ${temp}.c
369 MY_CC=$(tc-getCC)
370 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
371 local ret=$?
372 rm -f ${temp}.c
373 [ "$ret" != "1" ] && return 0
374 return 1
375}
376
377has_m32() {
378 # this doesnt test if the flag is accepted, it tests if the flag
379 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
380 # please dont replace this function with test_flag in some future
381 # clean-up!
382
383 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
384
385 local temp="$(emktemp)"
386 echo "int main() { return(0); }" > ${temp}.c
387 MY_CC=$(tc-getCC)
388 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
389 local ret=$?
390 rm -f ${temp}.c
391 [ "$ret" != "1" ] && return 0
392 return 1
393}
394
264replace-sparc64-flags() { 395replace-sparc64-flags() {
265 local SPARC64_CPUS="ultrasparc v9" 396 local SPARC64_CPUS="ultrasparc v9"
266 397
267 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] 398 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
268 then
269 for x in ${SPARC64_CPUS} 399 for x in ${SPARC64_CPUS}; do
270 do
271 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 400 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
272 done 401 done
273 else 402 else
274 for x in ${SPARC64_CPUS} 403 for x in ${SPARC64_CPUS}; do
275 do
276 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 404 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
277 done 405 done
278 fi 406 fi
279 407
280 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] 408 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
281 then
282 for x in ${SPARC64_CPUS} 409 for x in ${SPARC64_CPUS}; do
283 do
284 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 410 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
285 done 411 done
286 else 412 else
287 for x in ${SPARC64_CPUS} 413 for x in ${SPARC64_CPUS}; do
288 do
289 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 414 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
290 done 415 done
291 fi 416 fi
417
418 export CFLAGS CXXFLAGS
292} 419}
293 420
294append-ldflags() { 421append-ldflags() {
422 export LDFLAGS="${LDFLAGS} $*"
423 return 0
424}
425
426filter-ldflags() {
427 local x
428
429 # we do this fancy spacing stuff so as to not filter
430 # out part of a flag ... we want flag atoms ! :D
295 LDFLAGS="${LDFLAGS} $@" 431 LDFLAGS=" ${LDFLAGS} "
432 for x in "$@" ; do
433 LDFLAGS=${LDFLAGS// ${x} / }
434 done
435 [[ -z ${LDFLAGS// } ]] \
436 && LDFLAGS="" \
437 || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
438 export LDFLAGS
296 return 0 439 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} 440}
309 441
310fstack-flags() { 442fstack-flags() {
311 has_version sys-devel/hardened-gcc 443 if has_ssp; then
312 if [ $? == 0 ] ; then 444 [ -z "`is-flag -fno-stack-protector`" ] &&
313 if [ "`is-flag -yno_propolice`" != "true" ]; then 445 export CFLAGS="${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 446 fi
318 fi 447 return 0
319} 448}
449
450# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
451# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
452# fixes.
453#
454# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
455gcc2-flags() {
456 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
457 CFLAGS=${CFLAGS//-mtune=/-mcpu=}
458 CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
459 fi
460
461 replace-cpu-flags k6-{2,3} k6
462 replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
463
464 replace-cpu-flags pentium-mmx i586
465 replace-cpu-flags pentium{2,3,4} i686
466
467 replace-cpu-flags ev6{7,8} ev6
468
469 export CFLAGS CXXFLAGS
470}

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