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Revision 1.1.1.1 Revision 1.40
1# Copyright 1999-2005 Gentoo Foundation 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 1.1.1.1 2005/11/30 09:59:19 chriswhite Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.40 2004/03/12 11:21:15 vapier Exp $
4#
5# Author Bart Verwilst <verwilst@gentoo.org>
4 6
5 7ECLASS=flag-o-matic
6# need access to emktemp() 8INHERITED="$INHERITED $ECLASS"
7inherit eutils toolchain-funcs multilib
8 9
9# 10#
10#### filter-flags <flags> #### 11#### filter-flags <flags> ####
11# Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
12# Matches only complete flags 13# Matches only complete 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#### replace-cpu-flags <old.cpus> <new.cpu> ### 21#### replace-cpu-flags <new.cpu> <old.cpus> ###
21# Replace march/mcpu flags that specify <old.cpus> 22# Replace march/mcpu flags that specify <old.cpus>
22# with flags that specify <new.cpu> 23# with flags that specify <new.cpu>
23# 24#
24#### is-flag <flag> #### 25#### is-flag <flag> ####
25# Returns "true" if flag is set in C[XX]FLAGS 26# Returns "true" if flag is set in C[XX]FLAGS
46# will leave the user with -mfpmath=386 47# will leave the user with -mfpmath=386
47# 48#
48#### append-ldflags #### 49#### append-ldflags ####
49# Add extra flags to your current LDFLAGS 50# Add extra flags to your current LDFLAGS
50# 51#
51#### filter-ldflags <flags> #### 52#### etexec-flags ####
52# Remove particular flags from LDFLAGS 53# hooked function for hardened-gcc that appends
53# Matches only complete flags 54# -yet_exec {C,CXX,LD}FLAGS when hardened-gcc is installed
55# and a package is filtering -fPIC,-fpic, -fPIE, -fpie
54# 56#
55#### fstack-flags #### 57#### fstack-flags ####
56# hooked function for hardened gcc that appends 58# hooked function for hardened-gcc that appends
57# -fno-stack-protector to {C,CXX,LD}FLAGS 59# -yno_propolice to {C,CXX,LD}FLAGS when hardened-gcc is installed
58# when a package is filtering -fstack-protector, -fstack-protector-all 60# and 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#### bindnow-flags ####
63# Returns the flags to enable "now" binding in the current selected linker.
64#
65################ DEPRECATED functions ################
66# The following are still present to avoid breaking existing
67# code more than necessary; however they are deprecated. Please
68# use gcc-specs-* from toolchain-funcs.eclass instead, if you
69# need to know which hardened techs are active in the compiler.
70# See bug #100974
71#
72#### has_hardened ####
73# Returns true if the compiler has 'Hardened' in its version string,
74# (note; switched-spec vanilla compilers satisfy this condition) or
75# the specs file name contains 'hardened'.
76#
77#### has_pie ####
78# Returns true if the compiler by default or with current CFLAGS
79# builds position-independent code.
80#
81#### has_pic ####
82# Returns true if the compiler by default or with current CFLAGS
83# builds position-independent code.
84#
85#### has_ssp_all ####
86# Returns true if the compiler by default or with current CFLAGS
87# generates stack smash protections for all functions
88#
89#### has_ssp ####
90# Returns true if the compiler by default or with current CFLAGS
91# generates stack smash protections for most vulnerable functions
92# 61#
93 62
94# C[XX]FLAGS that we allow in strip-flags 63# C[XX]FLAGS that we allow in strip-flags
95setup-allowed-flags() { 64setup-allowed-flags() {
96 if [[ -z ${ALLOWED_FLAGS} ]] ; then 65 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
97 export ALLOWED_FLAGS="-pipe" 66 case "${ARCH}" in
98 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" 67 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
99 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" 68 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
100 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking" 69 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
101 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time" 70 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
102 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" 71 esac
103 fi
104 # allow a bunch of flags that negate features / control ABI
105 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
106 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
107 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
108 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
109 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
110 -mieee -mieee-with-inexact \
111 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
112 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
113 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
114 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias"
115 72
116 # C[XX]FLAGS that we are think is ok, but needs testing 73 # C[XX]FLAGS that we are think is ok, but needs testing
117 # NOTE: currently -Os have issues with gcc3 and K6* arch's 74 # NOTE: currently -Os have issues with gcc3 and K6* arch's
118 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 75 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
119 return 0 76 return 0
120} 77}
121 78
122filter-flags() { 79filter-flags() {
123 local x f fset
124 declare -a new_CFLAGS new_CXXFLAGS
125
126 for x in "$@" ; do 80 for x in "$@" ; do
127 case "${x}" in 81 case "${x}" in
128 -fPIC|-fpic|-fPIE|-fpie|-pie) 82 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;;
129 append-flags `test_flag -fno-pie`;;
130 -fstack-protector|-fstack-protector-all) 83 -fstack-protector|-fstack-protector-all) fstack-flags;;
131 fstack-flags;; 84 *) ;;
132 esac 85 esac
133 done 86 done
134 87
135 for fset in CFLAGS CXXFLAGS; do 88 # we do this fancy spacing stuff so as to not filter
136 # Looping over the flags instead of using a global 89 # out part of a flag ... we want flag atoms ! :D
137 # substitution ensures that we're working with flag atoms. 90 CFLAGS=" ${CFLAGS} "
138 # Otherwise globs like -O* have the potential to wipe out the 91 CXXFLAGS=" ${CXXFLAGS} "
139 # list of flags.
140 for f in ${!fset}; do
141 for x in "$@"; do 92 for x in "$@" ; do
142 # Note this should work with globs like -O* 93 CFLAGS="${CFLAGS// ${x} / }"
143 [[ ${f} == ${x} ]] && continue 2 94 CXXFLAGS="${CXXFLAGS// ${x} / }"
144 done
145 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
146 done 95 done
147 eval export ${fset}=\${new_${fset}\[*]} 96 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
148 done 97 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
149
150 return 0 98 return 0
151} 99}
152 100
153filter-lfs-flags() { 101filter-lfs-flags() {
154 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
155 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 102 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
156} 103}
157 104
158append-lfs-flags() {
159 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
160 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
161}
162
163append-flags() { 105append-flags() {
164 [[ -z $* ]] && return 0
165 export CFLAGS="${CFLAGS} $*" 106 export CFLAGS="${CFLAGS} $@"
166 export CXXFLAGS="${CXXFLAGS} $*" 107 export CXXFLAGS="${CXXFLAGS} $@"
167 [ -n "`is-flag -fno-stack-protector`" -o \ 108 [ "`is-flag -fno-stack-protector`" -o "`is-flag -fno-stack-protector-all`" ] && fstack-flags
168 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
169 return 0 109 return 0
170} 110}
171 111
172replace-flags() { 112replace-flags() {
173 [[ $# != 2 ]] \ 113 # we do this fancy spacing stuff so as to not filter
174 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ 114 # out part of a flag ... we want flag atoms ! :D
175 && die "replace-flags takes 2 arguments, not $#" 115 CFLAGS=" ${CFLAGS} "
176 116 CXXFLAGS=" ${CXXFLAGS} "
177 local f fset 117 CFLAGS="${CFLAGS// ${1} / ${2} }"
178 declare -a new_CFLAGS new_CXXFLAGS 118 CXXFLAGS="${CXXFLAGS// ${1} / ${2} }"
179 119 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
180 for fset in CFLAGS CXXFLAGS; do 120 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
181 # Looping over the flags instead of using a global
182 # substitution ensures that we're working with flag atoms.
183 # Otherwise globs like -O* have the potential to wipe out the
184 # list of flags.
185 for f in ${!fset}; do
186 # Note this should work with globs like -O*
187 [[ ${f} == ${1} ]] && f=${2}
188 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
189 done
190 eval export ${fset}=\${new_${fset}\[*]}
191 done
192
193 return 0 121 return 0
194} 122}
195 123
196replace-cpu-flags() { 124replace-cpu-flags() {
197 local newcpu="$#" ; newcpu="${!newcpu}" 125 local newcpu="$1" ; shift
198 while [ $# -gt 1 ] ; do 126 local oldcpu=""
199 # quote to make sure that no globbing is done (particularly on 127 for oldcpu in "$@" ; do
200 # ${oldcpu} prior to calling replace-flags
201 replace-flags "-march=${1}" "-march=${newcpu}" 128 replace-flags -march=${oldcpu} -march=${newcpu}
202 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" 129 replace-flags -mcpu=${oldcpu} -mcpu=${newcpu}
203 replace-flags "-mtune=${1}" "-mtune=${newcpu}" 130 replace-flags -mtune=${oldcpu} -mtune=${newcpu}
204 shift
205 done 131 done
206 return 0 132 return 0
207} 133}
208 134
209is-flag() { 135is-flag() {
210 local x
211
212 for x in ${CFLAGS} ${CXXFLAGS} ; do 136 for x in ${CFLAGS} ${CXXFLAGS} ; do
213 # Note this should work with globs like -mcpu=ultrasparc*
214 if [[ ${x} == ${1} ]]; then 137 if [ "${x}" == "$1" ] ; then
215 echo true 138 echo true
216 return 0 139 return 0
217 fi 140 fi
218 done 141 done
219 return 1 142 return 1
220} 143}
221 144
222filter-mfpmath() { 145filter-mfpmath() {
223 local orig_mfpmath new_math prune_math
224
225 # save the original -mfpmath flag 146 # save the original -mfpmath flag
226 orig_mfpmath="`get-flag -mfpmath`" 147 local orig_mfpmath="`get-flag -mfpmath`"
227 # get the value of the current -mfpmath flag 148 # get the value of the current -mfpmath flag
228 new_math=" `get-flag mfpmath | tr , ' '` " 149 local new_math=" `get-flag mfpmath | tr , ' '` "
229 # figure out which math values are to be removed 150 # figure out which math values are to be removed
230 prune_math="" 151 local prune_math=""
231 for prune_math in "$@" ; do 152 for prune_math in "$@" ; do
232 new_math="${new_math/ ${prune_math} / }" 153 new_math="${new_math/ ${prune_math} / }"
233 done 154 done
234 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" 155 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
235 156
244 fi 165 fi
245 return 0 166 return 0
246} 167}
247 168
248strip-flags() { 169strip-flags() {
249 local x y flag NEW_CFLAGS NEW_CXXFLAGS
250
251 setup-allowed-flags 170 setup-allowed-flags
252 171
253 local NEW_CFLAGS="" 172 local NEW_CFLAGS=""
254 local NEW_CXXFLAGS="" 173 local NEW_CXXFLAGS=""
255 174
256 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 175 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
257 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then 176 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
177 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
258 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 178 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
259 fi 179 fi
260 180
261 set -f # disable pathname expansion 181 set -f
262 182
263 for x in ${CFLAGS}; do 183 for x in ${CFLAGS}
184 do
264 for y in ${ALLOWED_FLAGS}; do 185 for y in ${ALLOWED_FLAGS}
186 do
265 flag=${x%%=*} 187 flag=${x%%=*}
266 if [ "${flag%%${y}}" = "" ] ; then 188 if [ "${flag%%${y}}" = "" ]
189 then
267 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 190 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
268 break 191 break
269 fi 192 fi
270 done 193 done
271 done 194 done
272 195
273 for x in ${CXXFLAGS}; do 196 for x in ${CXXFLAGS}
197 do
274 for y in ${ALLOWED_FLAGS}; do 198 for y in ${ALLOWED_FLAGS}
199 do
275 flag=${x%%=*} 200 flag=${x%%=*}
276 if [ "${flag%%${y}}" = "" ] ; then 201 if [ "${flag%%${y}}" = "" ]
202 then
277 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 203 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
278 break 204 break
279 fi 205 fi
280 done 206 done
281 done 207 done
286 fi 212 fi
287 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then 213 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
288 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" 214 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
289 fi 215 fi
290 216
291 set +f # re-enable pathname expansion 217 set +f
218
219 [ `use debug` ] \
220 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
221 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
292 222
293 export CFLAGS="${NEW_CFLAGS}" 223 export CFLAGS="${NEW_CFLAGS}"
294 export CXXFLAGS="${NEW_CXXFLAGS}" 224 export CXXFLAGS="${NEW_CXXFLAGS}"
295 return 0 225 return 0
296} 226}
297 227
298test_flag() { 228test_flag() {
299 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then 229 if gcc -S -xc "$@" -o /dev/null /dev/null >/dev/null 2>&1; then
300 printf "%s\n" "$*" 230 echo "$@"
301 return 0 231 return 0
302 fi 232 fi
303 return 1 233 return 1
304} 234}
305 235
306test_version_info() {
307 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
308 return 0
309 else
310 return 1
311 fi
312}
313
314strip-unsupported-flags() { 236strip-unsupported-flags() {
315 local x NEW_CFLAGS NEW_CXXFLAGS
316
317 for x in ${CFLAGS} ; do 237 for x in ${CFLAGS} ; do
318 NEW_CFLAGS="${NEW_CFLAGS} $(test_flag ${x})" 238 NEW_CFLAGS=${NEW_CFLAGS}" ""`test_flag ${x}`"
319 done 239 done
320 for x in ${CXXFLAGS} ; do 240 for x in ${CXXFLAGS} ; do
321 NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test_flag ${x})" 241 NEW_CXXFLAGS=${NEW_CXXFLAGS}" ""`test_flag ${x}`"
322 done 242 done
323 243
324 export CFLAGS=${NEW_CFLAGS} 244 export CFLAGS="${NEW_CFLAGS}"
325 export CXXFLAGS=${NEW_CXXFLAGS} 245 export CXXFLAGS="${NEW_CXXFLAGS}"
326} 246}
327 247
328get-flag() { 248get-flag() {
329 local f findflag="$1"
330
331 # this code looks a little flaky but seems to work for 249 # this code looks a little flaky but seems to work for
332 # everything we want ... 250 # everything we want ...
333 # for example, if CFLAGS="-march=i686": 251 # for example, if CFLAGS="-march=i686":
334 # `get-flag -march` == "-march=i686" 252 # `get-flags -march` == "-march=i686"
335 # `get-flag march` == "i686" 253 # `get-flags march` == "i686"
254 local findflag="$1"
336 for f in ${CFLAGS} ${CXXFLAGS} ; do 255 for f in ${CFLAGS} ${CXXFLAGS} ; do
337 if [ "${f/${findflag}}" != "${f}" ] ; then 256 if [ "${f/${findflag}}" != "${f}" ] ; then
338 printf "%s\n" "${f/-${findflag}=}" 257 echo "${f/-${findflag}=}"
339 return 0 258 return 0
340 fi 259 fi
341 done 260 done
342 return 1 261 return 1
343} 262}
344 263
345# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
346has_hardened() {
347 test_version_info Hardened && return 0
348 # the specs file wont exist unless gcc has GCC_SPECS support
349 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
350 return 0
351 return 1
352}
353
354# DEPRECATED - use gcc-specs-pie from toolchain-funcs
355# indicate whether PIC is set
356has_pic() {
357 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
358 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
359 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
360 return 1
361}
362
363# DEPRECATED - use gcc-specs-pie from toolchain-funcs
364# indicate whether PIE is set
365has_pie() {
366 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
367 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
368 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__)" ] && return 0
369 # test PIC while waiting for specs to be updated to generate __PIE__
370 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
371 return 1
372}
373
374# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
375# indicate whether code for SSP is being generated for all functions
376has_ssp_all() {
377 # note; this matches only -fstack-protector-all
378 [ "${CFLAGS/-fstack-protector-all}" != "${CFLAGS}" ] && return 0
379 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__)" ] && return 0
380 gcc-specs-ssp && return 0
381 return 1
382}
383
384# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
385# indicate whether code for SSP is being generated
386has_ssp() {
387 # note; this matches both -fstack-protector and -fstack-protector-all
388 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
389 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0
390 gcc-specs-ssp && return 0
391 return 1
392}
393
394has_m64() {
395 # this doesnt test if the flag is accepted, it tests if the flag
396 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
397 # please dont replace this function with test_flag in some future
398 # clean-up!
399 local temp="$(emktemp)"
400 echo "int main() { return(0); }" > ${temp}.c
401 MY_CC=$(tc-getCC)
402 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
403 local ret=$?
404 rm -f ${temp}.c
405 [ "$ret" != "1" ] && return 0
406 return 1
407}
408
409has_m32() {
410 # this doesnt test if the flag is accepted, it tests if the flag
411 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
412 # please dont replace this function with test_flag in some future
413 # clean-up!
414
415 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
416
417 local temp=$(emktemp)
418 echo "int main() { return(0); }" > "${temp}".c
419 MY_CC=$(tc-getCC)
420 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
421 local ret=$?
422 rm -f "${temp}".c
423 [ "$ret" != "1" ] && return 0
424 return 1
425}
426
427replace-sparc64-flags() { 264replace-sparc64-flags() {
428 local SPARC64_CPUS="ultrasparc v9" 265 local SPARC64_CPUS="ultrasparc v9"
429 266
430 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then 267 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
268 then
431 for x in ${SPARC64_CPUS}; do 269 for x in ${SPARC64_CPUS}
270 do
432 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 271 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
433 done 272 done
273 else
274 for x in ${SPARC64_CPUS}
275 do
276 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
277 done
278 fi
279
280 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
281 then
282 for x in ${SPARC64_CPUS}
283 do
284 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
285 done
434 else 286 else
435 for x in ${SPARC64_CPUS}; do 287 for x in ${SPARC64_CPUS}
436 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
437 done 288 do
438 fi
439
440 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
441 for x in ${SPARC64_CPUS}; do
442 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
443 done
444 else
445 for x in ${SPARC64_CPUS}; do
446 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 289 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
447 done 290 done
448 fi 291 fi
449
450 export CFLAGS CXXFLAGS
451} 292}
452 293
453append-ldflags() { 294append-ldflags() {
454 export LDFLAGS="${LDFLAGS} $*"
455 return 0
456}
457
458filter-ldflags() {
459 local x
460
461 # we do this fancy spacing stuff so as to not filter
462 # out part of a flag ... we want flag atoms ! :D
463 LDFLAGS=" ${LDFLAGS} " 295 LDFLAGS="${LDFLAGS} $@"
464 for x in "$@" ; do
465 LDFLAGS=${LDFLAGS// ${x} / }
466 done
467 [[ -z ${LDFLAGS// } ]] \
468 && LDFLAGS="" \
469 || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
470 export LDFLAGS
471 return 0 296 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
472} 308}
473 309
474fstack-flags() { 310fstack-flags() {
475 if gcc-specs-ssp; then 311 has_version sys-devel/hardened-gcc
476 [ -z "`is-flag -fno-stack-protector`" ] && 312 if [ $? == 0 ] ; then
477 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" 313 if [ "`is-flag -yno_propolice`" != "true" ]; then
314 debug-print ">>> appending flags -yno_propolice"
315 append-flags -yno_propolice
316 append-ldflags -yno_propolice
478 fi 317 fi
479 return 0
480}
481
482# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
483# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
484# fixes.
485#
486# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
487gcc2-flags() {
488 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
489 CFLAGS=${CFLAGS//-mtune=/-mcpu=}
490 CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
491 fi 318 fi
492
493 replace-cpu-flags k6-{2,3} k6
494 replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
495
496 replace-cpu-flags pentium-mmx i586
497 replace-cpu-flags pentium{2,3,4} i686
498
499 replace-cpu-flags ev6{7,8} ev6
500
501 export CFLAGS CXXFLAGS
502} 319}
503
504# Gets the flags needed for "NOW" binding
505bindnow-flags() {
506 case $($(tc-getLD) -v 2>&1 </dev/null) in
507 *GNU* | *'with BFD'*) # GNU ld
508 echo "-Wl,-z,now" ;;
509 *Apple*) # Darwin ld
510 echo "-bind_at_load" ;;
511 *)
512 # Some linkers just recognize -V instead of -v
513 case $($(tc-getLD) -V 2>&1 </dev/null) in
514 *Solaris*) # Solaris accept almost the same GNU options
515 echo "-Wl,-z,now" ;;
516 esac
517 ;;
518 esac
519}

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