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Revision 1.1.1.1 Revision 1.62
1# Copyright 1999-2005 Gentoo Foundation 1# Copyright 1999-2004 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 1.1.1.1 2005/11/30 09:59:19 chriswhite Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.62 2004/07/15 04:59:44 lv Exp $
4#
5# Author Bart Verwilst <verwilst@gentoo.org>
4 6
5 7ECLASS=flag-o-matic
6# need access to emktemp() 8INHERITED="$INHERITED $ECLASS"
7inherit eutils toolchain-funcs multilib 9IUSE="$IUSE debug"
8 10
9# 11#
10#### filter-flags <flags> #### 12#### filter-flags <flags> ####
11# Remove particular flags from C[XX]FLAGS 13# Remove particular flags from C[XX]FLAGS
12# Matches only complete flags 14# Matches only complete flags
15# Add extra flags to your current C[XX]FLAGS 17# Add extra flags to your current C[XX]FLAGS
16# 18#
17#### replace-flags <orig.flag> <new.flag> ### 19#### replace-flags <orig.flag> <new.flag> ###
18# Replace a flag by another one 20# Replace a flag by another one
19# 21#
20#### replace-cpu-flags <old.cpus> <new.cpu> ### 22#### replace-cpu-flags <new.cpu> <old.cpus> ###
21# Replace march/mcpu flags that specify <old.cpus> 23# Replace march/mcpu flags that specify <old.cpus>
22# with flags that specify <new.cpu> 24# with flags that specify <new.cpu>
23# 25#
24#### is-flag <flag> #### 26#### is-flag <flag> ####
25# Returns "true" if flag is set in C[XX]FLAGS 27# Returns "true" if flag is set in C[XX]FLAGS
49# Add extra flags to your current LDFLAGS 51# Add extra flags to your current LDFLAGS
50# 52#
51#### filter-ldflags <flags> #### 53#### filter-ldflags <flags> ####
52# Remove particular flags from LDFLAGS 54# Remove particular flags from LDFLAGS
53# Matches only complete flags 55# Matches only complete flags
56#
57#### etexec-flags ####
58# hooked function for hardened gcc that appends
59# -fno-pic to {C,CXX,LD}FLAGS
60# when a package is filtering -fpic, -fPIC, -fpie, -fPIE
54# 61#
55#### fstack-flags #### 62#### fstack-flags ####
56# hooked function for hardened gcc that appends 63# hooked function for hardened gcc that appends
57# -fno-stack-protector to {C,CXX,LD}FLAGS 64# -fno-stack-protector to {C,CXX,LD}FLAGS
58# when a package is filtering -fstack-protector, -fstack-protector-all 65# when a package is filtering -fstack-protector, -fstack-protector-all
59# notice: modern automatic specs files will also suppress -fstack-protector-all 66# notice: modern automatic specs files will also suppress -fstack-protector-all
60# when only -fno-stack-protector is given 67# when only -fno-stack-protector is given
61# 68#
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#
93 69
94# C[XX]FLAGS that we allow in strip-flags 70# C[XX]FLAGS that we allow in strip-flags
95setup-allowed-flags() { 71setup-allowed-flags() {
96 if [[ -z ${ALLOWED_FLAGS} ]] ; then 72 if [ -z "${ALLOWED_FLAGS}" ] ; then
97 export ALLOWED_FLAGS="-pipe" 73 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -fno-unit-at-a-time -pipe -g"
98 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" 74 case "${ARCH}" in
99 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" 75 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
100 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking" 76 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;;
101 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time" 77 x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;;
102 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" 78 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
79 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
80 esac
103 fi 81 fi
104 # allow a bunch of flags that negate features / control ABI
105 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
106 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
107 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
108 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
109 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
110 -mieee -mieee-with-inexact \
111 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
112 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
113 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
114 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias"
115 82
116 # C[XX]FLAGS that we are think is ok, but needs testing 83 # C[XX]FLAGS that we are think is ok, but needs testing
117 # NOTE: currently -Os have issues with gcc3 and K6* arch's 84 # NOTE: currently -Os have issues with gcc3 and K6* arch's
118 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 85 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
119 return 0 86 return 0
120} 87}
121 88
122filter-flags() { 89filter-flags() {
123 local x f fset 90 local x f fset
124 declare -a new_CFLAGS new_CXXFLAGS 91 declare -a new_CFLAGS new_CXXFLAGS
125 92
126 for x in "$@" ; do 93 for x in "$@" ; do
127 case "${x}" in 94 case "${x}" in
128 -fPIC|-fpic|-fPIE|-fpie|-pie) 95 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;;
129 append-flags `test_flag -fno-pie`;;
130 -fstack-protector|-fstack-protector-all) 96 -fstack-protector|-fstack-protector-all) fstack-flags;;
131 fstack-flags;;
132 esac 97 esac
133 done 98 done
134 99
135 for fset in CFLAGS CXXFLAGS; do 100 for fset in CFLAGS CXXFLAGS; do
136 # Looping over the flags instead of using a global
137 # substitution ensures that we're working with flag atoms.
138 # Otherwise globs like -O* have the potential to wipe out the
139 # list of flags.
140 for f in ${!fset}; do 101 for f in ${!fset}; do
141 for x in "$@"; do 102 for x in "$@"; do
142 # Note this should work with globs like -O* 103 # Note this should work with globs like -O*
143 [[ ${f} == ${x} ]] && continue 2 104 [[ ${f} == ${x} ]] && continue 2
144 done 105 done
149 110
150 return 0 111 return 0
151} 112}
152 113
153filter-lfs-flags() { 114filter-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 115 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
156} 116}
157 117
158append-lfs-flags() { 118append-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 119 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
161} 120}
162 121
163append-flags() { 122append-flags() {
164 [[ -z $* ]] && return 0
165 export CFLAGS="${CFLAGS} $*" 123 export CFLAGS="${CFLAGS} $*"
166 export CXXFLAGS="${CXXFLAGS} $*" 124 export CXXFLAGS="${CXXFLAGS} $*"
167 [ -n "`is-flag -fno-stack-protector`" -o \ 125 [ -n "`is-flag -fno-stack-protector`" -o \
168 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags 126 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
169 return 0 127 return 0
170} 128}
171 129
172replace-flags() { 130replace-flags() {
173 [[ $# != 2 ]] \ 131 # we do this fancy spacing stuff so as to not filter
174 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ 132 # out part of a flag ... we want flag atoms ! :D
175 && die "replace-flags takes 2 arguments, not $#" 133 CFLAGS=" ${CFLAGS} "
176 134 CXXFLAGS=" ${CXXFLAGS} "
177 local f fset 135 CFLAGS="${CFLAGS// ${1} / ${2} }"
178 declare -a new_CFLAGS new_CXXFLAGS 136 CXXFLAGS="${CXXFLAGS// ${1} / ${2} }"
179 137 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
180 for fset in CFLAGS CXXFLAGS; do 138 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
181 # Looping over the flags instead of using a global 139 export CFLAGS CXXFLAGS
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 0 140 return 0
194} 141}
195 142
196replace-cpu-flags() { 143replace-cpu-flags() {
197 local newcpu="$#" ; newcpu="${!newcpu}" 144 local oldcpu newcpu="$1" ; shift
198 while [ $# -gt 1 ] ; do 145 for oldcpu in "$@" ; do
199 # quote to make sure that no globbing is done (particularly on
200 # ${oldcpu} prior to calling replace-flags
201 replace-flags "-march=${1}" "-march=${newcpu}" 146 replace-flags -march=${oldcpu} -march=${newcpu}
202 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" 147 replace-flags -mcpu=${oldcpu} -mcpu=${newcpu}
203 replace-flags "-mtune=${1}" "-mtune=${newcpu}" 148 replace-flags -mtune=${oldcpu} -mtune=${newcpu}
204 shift
205 done 149 done
206 return 0 150 return 0
207} 151}
208 152
209is-flag() { 153is-flag() {
210 local x 154 local x
211 155
212 for x in ${CFLAGS} ${CXXFLAGS} ; do 156 for x in ${CFLAGS} ${CXXFLAGS} ; do
213 # Note this should work with globs like -mcpu=ultrasparc*
214 if [[ ${x} == ${1} ]]; then 157 if [ "${x}" == "$1" ] ; then
215 echo true 158 echo true
216 return 0 159 return 0
217 fi 160 fi
218 done 161 done
219 return 1 162 return 1
252 195
253 local NEW_CFLAGS="" 196 local NEW_CFLAGS=""
254 local NEW_CXXFLAGS="" 197 local NEW_CXXFLAGS=""
255 198
256 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 199 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
257 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then 200 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then
201 use debug && einfo "Enabling the use of some unstable flags"
258 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 202 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
259 fi 203 fi
260 204
261 set -f # disable pathname expansion 205 set -f # disable pathname expansion
262 206
263 for x in ${CFLAGS}; do 207 for x in ${CFLAGS}; do
264 for y in ${ALLOWED_FLAGS}; do 208 for y in ${ALLOWED_FLAGS}; do
265 flag=${x%%=*} 209 flag=${x%%=*}
266 if [ "${flag%%${y}}" = "" ] ; then 210 if [ "${flag%%${y}}" = "" ]; then
267 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 211 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
268 break 212 break
269 fi 213 fi
270 done 214 done
271 done 215 done
272 216
273 for x in ${CXXFLAGS}; do 217 for x in ${CXXFLAGS}; do
274 for y in ${ALLOWED_FLAGS}; do 218 for y in ${ALLOWED_FLAGS}; do
275 flag=${x%%=*} 219 flag=${x%%=*}
276 if [ "${flag%%${y}}" = "" ] ; then 220 if [ "${flag%%${y}}" = "" ]; then
277 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 221 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
278 break 222 break
279 fi 223 fi
280 done 224 done
281 done 225 done
294 export CXXFLAGS="${NEW_CXXFLAGS}" 238 export CXXFLAGS="${NEW_CXXFLAGS}"
295 return 0 239 return 0
296} 240}
297 241
298test_flag() { 242test_flag() {
299 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then 243 local cc=${CC:-gcc} ; cc=${cc%% *}
244 if ${cc} -S -xc "$@" -o /dev/null /dev/null &>/dev/null; then
300 printf "%s\n" "$*" 245 printf "%s\n" "$*"
301 return 0 246 return 0
302 fi 247 fi
303 return 1 248 return 1
304} 249}
305 250
306test_version_info() { 251test_version_info() {
252 local cc=${CC:-gcc} ; cc=${cc%% *}
307 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then 253 if [[ $(${cc} --version 2>&1) == *$1* ]]; then
308 return 0 254 return 0
309 else 255 else
310 return 1 256 return 1
311 fi 257 fi
312} 258}
313 259
314strip-unsupported-flags() { 260strip-unsupported-flags() {
315 local x NEW_CFLAGS NEW_CXXFLAGS 261 local NEW_CFLAGS NEW_CXXFLAGS
316 262
317 for x in ${CFLAGS} ; do 263 for x in ${CFLAGS} ; do
318 NEW_CFLAGS="${NEW_CFLAGS} $(test_flag ${x})" 264 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
319 done 265 done
320 for x in ${CXXFLAGS} ; do 266 for x in ${CXXFLAGS} ; do
321 NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test_flag ${x})" 267 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
322 done 268 done
323 269
324 export CFLAGS=${NEW_CFLAGS} 270 export CFLAGS="${NEW_CFLAGS}"
325 export CXXFLAGS=${NEW_CXXFLAGS} 271 export CXXFLAGS="${NEW_CXXFLAGS}"
326} 272}
327 273
328get-flag() { 274get-flag() {
329 local f findflag="$1" 275 local f findflag="$1"
330 276
340 fi 286 fi
341 done 287 done
342 return 1 288 return 1
343} 289}
344 290
345# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
346has_hardened() { 291has_hardened() {
347 test_version_info Hardened && return 0 292 test_version_info Hardened
348 # the specs file wont exist unless gcc has GCC_SPECS support
349 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
350 return 0
351 return 1 293 return $?
352} 294}
353 295
354# DEPRECATED - use gcc-specs-pie from toolchain-funcs
355# indicate whether PIC is set
356has_pic() { 296has_pic() {
357 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 297 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
358 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 298 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
359 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0 299 test_version_info pie && return 0
360 return 1 300 return 1
361} 301}
362 302
363# DEPRECATED - use gcc-specs-pie from toolchain-funcs
364# indicate whether PIE is set
365has_pie() { 303has_pie() {
366 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 304 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
367 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 305 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
368 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__)" ] && return 0 306 test_version_info pie && return 0
369 # test PIC while waiting for specs to be updated to generate __PIE__
370 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
371 return 1 307 return 1
372} 308}
373 309
374# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
375# indicate whether code for SSP is being generated for all functions
376has_ssp_all() {
377 # note; this matches only -fstack-protector-all
378 [ "${CFLAGS/-fstack-protector-all}" != "${CFLAGS}" ] && return 0
379 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__)" ] && return 0
380 gcc-specs-ssp && return 0
381 return 1
382}
383
384# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
385# indicate whether code for SSP is being generated
386has_ssp() { 310has_ssp() {
387 # note; this matches both -fstack-protector and -fstack-protector-all
388 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 311 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
389 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0 312 test_version_info ssp && return 0
390 gcc-specs-ssp && return 0
391 return 1 313 return 1
392} 314}
393 315
394has_m64() { 316has_m64() {
395 # this doesnt test if the flag is accepted, it tests if the flag 317 # this doesnt test if the flag is accepted, it tests if the flag
396 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 318 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
397 # please dont replace this function with test_flag in some future 319 # please dont replace this function with test_flag in some future
398 # clean-up! 320 # clean-up!
399 local temp="$(emktemp)" 321 temp=`mktemp`
400 echo "int main() { return(0); }" > ${temp}.c 322 echo "int main() { return(0); }" > ${temp}.c
401 MY_CC=$(tc-getCC)
402 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 323 ${CC/ .*/} -m64 -o /dev/null ${temp}.c > /dev/null 2>&1
403 local ret=$? 324 ret=$?
404 rm -f ${temp}.c 325 rm -f ${temp}.c
405 [ "$ret" != "1" ] && return 0 326 [ "$ret" != "1" ] && return 0
406 return 1 327 return 1
407} 328}
408 329
409has_m32() { 330has_m32() {
410 # this doesnt test if the flag is accepted, it tests if the flag 331 # this doesnt test if the flag is accepted, it tests if the flag
411 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 332 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
412 # please dont replace this function with test_flag in some future 333 # please dont replace this function with test_flag in some future
413 # clean-up! 334 # clean-up!
414 335 temp=`mktemp`
415 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
416
417 local temp=$(emktemp)
418 echo "int main() { return(0); }" > "${temp}".c 336 echo "int main() { return(0); }" > ${temp}.c
419 MY_CC=$(tc-getCC) 337 ${CC/ .*/} -m32 -o /dev/null ${temp}.c > /dev/null 2>&1
420 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 338 ret=$?
421 local ret=$?
422 rm -f "${temp}".c 339 rm -f ${temp}.c
423 [ "$ret" != "1" ] && return 0 340 [ "$ret" != "1" ] && return 0
424 return 1 341 return 1
425} 342}
426 343
427replace-sparc64-flags() { 344replace-sparc64-flags() {
428 local SPARC64_CPUS="ultrasparc v9" 345 local SPARC64_CPUS="ultrasparc v9"
429 346
430 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then 347 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
431 for x in ${SPARC64_CPUS}; do 348 for x in ${SPARC64_CPUS}; do
432 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 349 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
433 done 350 done
434 else 351 else
435 for x in ${SPARC64_CPUS}; do 352 for x in ${SPARC64_CPUS}; do
436 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 353 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
437 done 354 done
438 fi 355 fi
439 356
440 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then 357 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
441 for x in ${SPARC64_CPUS}; do 358 for x in ${SPARC64_CPUS}; do
442 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 359 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
443 done 360 done
444 else 361 else
445 for x in ${SPARC64_CPUS}; do 362 for x in ${SPARC64_CPUS}; do
460 377
461 # we do this fancy spacing stuff so as to not filter 378 # we do this fancy spacing stuff so as to not filter
462 # out part of a flag ... we want flag atoms ! :D 379 # out part of a flag ... we want flag atoms ! :D
463 LDFLAGS=" ${LDFLAGS} " 380 LDFLAGS=" ${LDFLAGS} "
464 for x in "$@" ; do 381 for x in "$@" ; do
465 LDFLAGS=${LDFLAGS// ${x} / } 382 LDFLAGS="${LDFLAGS// ${x} / }"
466 done 383 done
467 [[ -z ${LDFLAGS// } ]] \
468 && LDFLAGS="" \
469 || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2} 384 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}"
470 export LDFLAGS 385 export LDFLAGS
471 return 0 386 return 0
472} 387}
473 388
389etexec-flags() {
390 # if you're not using a hardened compiler you wont need this
391 # PIC/no-pic kludge in the first place.
392 has_hardened || return 0
393
394 if has_pie || has_pic; then
395 [ -z "`is-flag -fno-pic`" ] &&
396 export CFLAGS="${CFLAGS} `test_flag -fno-pic`"
397 [ -z "`is-flag -nopie`" ] &&
398 export CFLAGS="${CFLAGS} `test_flag -nopie`"
399 fi
400 return 0
401}
402
474fstack-flags() { 403fstack-flags() {
475 if gcc-specs-ssp; then 404 if has_ssp; then
476 [ -z "`is-flag -fno-stack-protector`" ] && 405 [ -z "`is-flag -fno-stack-protector`" ] &&
477 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" 406 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
478 fi 407 fi
479 return 0 408 return 0
480} 409}
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
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}
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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