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Revision 1.24 Revision 1.103
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 1.24 2003/07/22 12:48:11 aliz Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.103 2006/01/10 01:14:30 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#
20#### replace-cpu-flags <old.cpus> <new.cpu> ###
21# Replace march/mcpu flags that specify <old.cpus>
22# with flags that specify <new.cpu>
23#
21#### is-flag <flag> #### 24#### is-flag <flag> ####
22# Returns "true" if flag is set in C[XX]FLAGS 25# Returns "true" if flag is set in C[XX]FLAGS
23# Matches only complete a flag 26# Matches only complete a flag
24# 27#
25#### strip-flags #### 28#### strip-flags ####
26# Strip C[XX]FLAGS of everything except known 29# Strip C[XX]FLAGS of everything except known
27# good options. 30# good options.
28# 31#
32#### strip-unsupported-flags ####
33# Strip C[XX]FLAGS of any flags not supported by
34# installed version of gcc
35#
29#### get-flag <flag> #### 36#### get-flag <flag> ####
30# Find and echo the value for a particular flag 37# Find and echo the value for a particular flag
31# 38#
32#### replace-sparc64-flags #### 39#### replace-sparc64-flags ####
33# Sets mcpu to v8 and uses the original value 40# Sets mcpu to v8 and uses the original value
34# as mtune if none specified. 41# as mtune if none specified.
35# 42#
36 43#### filter-mfpmath <math types> ####
44# Remove specified math types from the fpmath specification
45# If the user has -mfpmath=sse,386, running `filter-mfpmath sse`
46# will leave the user with -mfpmath=386
47#
48#### append-ldflags ####
49# Add extra flags to your current LDFLAGS
50#
51#### filter-ldflags <flags> ####
52# Remove particular flags from LDFLAGS
53# Matches only complete flags
54#
55#### fstack-flags ####
56# hooked function for hardened gcc that appends
57# -fno-stack-protector to {C,CXX,LD}FLAGS
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#### 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#
37 93
38# C[XX]FLAGS that we allow in strip-flags 94# C[XX]FLAGS that we allow in strip-flags
39ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g" 95setup-allowed-flags() {
40case "${ARCH}" in 96 if [[ -z ${ALLOWED_FLAGS} ]] ; then
41 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 97 export ALLOWED_FLAGS="-pipe"
42 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 98 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
43esac 99 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
100 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
101 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
102 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
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"
44 115
45# C[XX]FLAGS that we are think is ok, but needs testing 116 # C[XX]FLAGS that we are think is ok, but needs testing
46# NOTE: currently -Os have issues with gcc3 and K6* arch's 117 # NOTE: currently -Os have issues with gcc3 and K6* arch's
47UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 118 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
48 119 return 0
49filter-mfpmath() {
50 for a in $CFLAGS; do
51 if [ "${a:0:8}" == "-mfpmath" ]; then
52 orig_mfpmath=$a
53 fi
54 done
55
56 mfpmath="$( echo $orig_mfpmath | awk -F '=' '{print $2}' | tr "," " " )"
57 for b in $@; do
58 mfpmath="${mfpmath/$b}"
59 done
60
61 if [ -z "${mfpmath/ }" ]; then
62 filter-flags "$orig_mfpmath"
63 else
64 new_mfpmath="-mfpmath=$( echo $mfpmath | sed -e "s/ /,/g" -e "s/,,/,/g" )"
65 replace-flags "$orig_mfpmath" "$new_mfpmath"
66 fi
67} 120}
68 121
69filter-flags() { 122filter-flags() {
70 # we do this fancy spacing stuff so as to not filter 123 local x f fset
71 # out part of a flag ... we want flag atoms ! :D 124 declare -a new_CFLAGS new_CXXFLAGS
72 export CFLAGS=" ${CFLAGS} " 125
73 export CXXFLAGS=" ${CXXFLAGS} "
74 for x in $@ ; do 126 for x in "$@" ; do
75 export CFLAGS="${CFLAGS/ ${x} / }" 127 case "${x}" in
76 export CXXFLAGS="${CXXFLAGS/ ${x} / }" 128 -fPIC|-fpic|-fPIE|-fpie|-pie)
129 append-flags `test_flag -fno-pie`;;
130 -fstack-protector|-fstack-protector-all)
131 fstack-flags;;
132 esac
133 done
134
135 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 ${!fset}; do
141 for x in "$@"; do
142 # Note this should work with globs like -O*
143 [[ ${f} == ${x} ]] && continue 2
144 done
145 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
77 done 146 done
78 export CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 147 eval export ${fset}=\${new_${fset}\[*]}
79 export CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 148 done
149
150 return 0
151}
152
153filter-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
156}
157
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
80} 161}
81 162
82append-flags() { 163append-flags() {
164 [[ -z $* ]] && return 0
83 CFLAGS="${CFLAGS} $@" 165 export CFLAGS="${CFLAGS} $*"
84 CXXFLAGS="${CXXFLAGS} $@" 166 export CXXFLAGS="${CXXFLAGS} $*"
167 [ -n "`is-flag -fno-stack-protector`" -o \
168 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
169 return 0
85} 170}
86 171
87replace-flags() { 172replace-flags() {
88 CFLAGS="${CFLAGS/${1}/${2} }" 173 [[ $# != 2 ]] \
89 CXXFLAGS="${CXXFLAGS/${1}/${2} }" 174 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
175 && die "replace-flags takes 2 arguments, not $#"
176
177 local f fset
178 declare -a new_CFLAGS new_CXXFLAGS
179
180 for fset in CFLAGS CXXFLAGS; do
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
194}
195
196replace-cpu-flags() {
197 local newcpu="$#" ; newcpu="${!newcpu}"
198 while [ $# -gt 1 ] ; 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=${newcpu}"
202 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
203 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
204 shift
205 done
206 return 0
90} 207}
91 208
92is-flag() { 209is-flag() {
210 local x
211
93 for x in ${CFLAGS} ${CXXFLAGS} ; do 212 for x in ${CFLAGS} ${CXXFLAGS} ; do
213 # Note this should work with globs like -mcpu=ultrasparc*
94 if [ "${x}" == "$1" ] ; then 214 if [[ ${x} == ${1} ]]; then
95 echo true 215 echo true
96 return 0 216 return 0
97 fi 217 fi
98 done 218 done
99 return 1 219 return 1
100} 220}
101 221
222filter-mfpmath() {
223 local orig_mfpmath new_math prune_math
224
225 # save the original -mfpmath flag
226 orig_mfpmath="`get-flag -mfpmath`"
227 # get the value of the current -mfpmath flag
228 new_math=" `get-flag mfpmath | tr , ' '` "
229 # figure out which math values are to be removed
230 prune_math=""
231 for prune_math in "$@" ; do
232 new_math="${new_math/ ${prune_math} / }"
233 done
234 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
235
236 if [ -z "${new_math}" ] ; then
237 # if we're removing all user specified math values are
238 # slated for removal, then we just filter the flag
239 filter-flags ${orig_mfpmath}
240 else
241 # if we only want to filter some of the user specified
242 # math values, then we replace the current flag
243 replace-flags ${orig_mfpmath} -mfpmath=${new_math}
244 fi
245 return 0
246}
247
102strip-flags() { 248strip-flags() {
249 local x y flag NEW_CFLAGS NEW_CXXFLAGS
250
251 setup-allowed-flags
252
103 local NEW_CFLAGS="" 253 local NEW_CFLAGS=""
104 local NEW_CXXFLAGS="" 254 local NEW_CXXFLAGS=""
105 255
106 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 256 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
107 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then 257 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
108 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
109 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 258 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
110 fi 259 fi
111 260
112 set -f 261 set -f # disable pathname expansion
113 262
114 for x in ${CFLAGS} 263 for x in ${CFLAGS}; do
115 do
116 for y in ${ALLOWED_FLAGS} 264 for y in ${ALLOWED_FLAGS}; do
117 do
118 flag=${x%%=*} 265 flag=${x%%=*}
119 if [ "${flag%%${y}}" = "" ] 266 if [ "${flag%%${y}}" = "" ] ; then
120 then
121 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 267 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
122 break 268 break
123 fi 269 fi
124 done 270 done
125 done 271 done
126 272
127 for x in ${CXXFLAGS} 273 for x in ${CXXFLAGS}; do
128 do
129 for y in ${ALLOWED_FLAGS} 274 for y in ${ALLOWED_FLAGS}; do
130 do
131 flag=${x%%=*} 275 flag=${x%%=*}
132 if [ "${flag%%${y}}" = "" ] 276 if [ "${flag%%${y}}" = "" ] ; then
133 then
134 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 277 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
135 break 278 break
136 fi 279 fi
137 done 280 done
138 done 281 done
139 282
140 set +f 283 # In case we filtered out all optimization flags fallback to -O2
284 if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
285 NEW_CFLAGS="${NEW_CFLAGS} -O2"
286 fi
287 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
288 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
289 fi
141 290
142 [ `use debug` ] \ 291 set +f # re-enable pathname expansion
143 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
144 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
145 292
146 export CFLAGS="${NEW_CFLAGS}" 293 export CFLAGS="${NEW_CFLAGS}"
147 export CXXFLAGS="${NEW_CXXFLAGS}" 294 export CXXFLAGS="${NEW_CXXFLAGS}"
295 return 0
296}
297
298test-flag-PROG() {
299 local comp=$1
300 local flags="$2"
301
302 [[ -z ${comp} || -z ${flags} ]] && \
303 return 1
304
305 local PROG=$(tc-get${comp})
306 ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
307 > /dev/null 2>&1
308}
309
310# Returns true if C compiler support given flag
311test-flag-CC() { test-flag-PROG "CC" "$1"; }
312
313# Returns true if C++ compiler support given flag
314test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
315
316test-flags-PROG() {
317 local comp=$1
318 local flags
319 local x
320
321 shift
322
323 [[ -z ${comp} ]] && \
324 return 1
325
326 for x in "$@" ; do
327 test-flag-${comp} "${x}" && flags="${flags} ${x}"
328 done
329
330 echo "${flags}"
331
332 # Just bail if we dont have any flags
333 [[ -n ${flags} ]]
334}
335
336# Returns (echo's) the given flags supported by the C compiler
337test-flags-CC() { test-flags-PROG "CC" "$@"; }
338
339# Returns (echo's) the given flags supported by the C++ compiler
340test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
341
342# Short-hand that should hopefully work for both C and C++ compiler, but
343# its really only present due to the append-flags() abomination.
344test-flags() { test-flags-CC "$@"; }
345
346# Depriciated, use test-flags()
347test_flag() {
348 addwrite "/dev/stderr"
349 ewarn "test_flag: deprecated, please use test-flags()!" >/dev/stderr
350
351 test-flags-CC "$@"
352}
353
354test_version_info() {
355 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
356 return 0
357 else
358 return 1
359 fi
360}
361
362strip-unsupported-flags() {
363 local x NEW_CFLAGS NEW_CXXFLAGS
364
365 for x in ${CFLAGS} ; do
366 NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})"
367 done
368 for x in ${CXXFLAGS} ; do
369 NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})"
370 done
371
372 export CFLAGS=${NEW_CFLAGS}
373 export CXXFLAGS=${NEW_CXXFLAGS}
148} 374}
149 375
150get-flag() { 376get-flag() {
151 local findflag="$1" 377 local f findflag="$1"
152 378
379 # this code looks a little flaky but seems to work for
380 # everything we want ...
381 # for example, if CFLAGS="-march=i686":
382 # `get-flag -march` == "-march=i686"
383 # `get-flag march` == "i686"
153 for f in ${CFLAGS} ${CXXFLAGS} ; do 384 for f in ${CFLAGS} ${CXXFLAGS} ; do
154 if [ "${f/${findflag}}" != "${f}" ] ; then 385 if [ "${f/${findflag}}" != "${f}" ] ; then
155 echo "${f/-${findflag}=}" 386 printf "%s\n" "${f/-${findflag}=}"
156 return 387 return 0
157 fi 388 fi
158 done 389 done
390 return 1
391}
392
393# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
394has_hardened() {
395 addwrite "/dev/stderr"
396 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" \
397 >/dev/stderr
398
399 test_version_info Hardened && return 0
400 # The specs file wont exist unless gcc has GCC_SPECS support
401 [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
402}
403
404# DEPRECATED - use gcc-specs-pie from toolchain-funcs
405# indicate whether PIC is set
406has_pic() {
407 addwrite "/dev/stderr"
408 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >/dev/stderr
409
410 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
411 ${CFLAGS/-fpic} != ${CFLAGS} || \
412 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]]
413}
414
415# DEPRECATED - use gcc-specs-pie from toolchain-funcs
416# indicate whether PIE is set
417has_pie() {
418 addwrite "/dev/stderr"
419 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >/dev/stderr
420
421 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
422 ${CFLAGS/-fpie} != ${CFLAGS} || \
423 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__) || \
424 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]]
425 # test PIC while waiting for specs to be updated to generate __PIE__
426}
427
428# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
429# indicate whether code for SSP is being generated for all functions
430has_ssp_all() {
431 addwrite "/dev/stderr"
432 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >/dev/stderr
433
434 # note; this matches only -fstack-protector-all
435 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
436 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
437 gcc-specs-ssp
438}
439
440# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
441# indicate whether code for SSP is being generated
442has_ssp() {
443 addwrite "/dev/stderr"
444 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >/dev/stderr
445
446 # note; this matches both -fstack-protector and -fstack-protector-all
447 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
448 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
449 gcc-specs-ssp
450}
451
452has_m64() {
453 # this doesnt test if the flag is accepted, it tests if the flag
454 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
455 # please dont replace this function with test_flag in some future
456 # clean-up!
457
458 local temp="$(emktemp)"
459 echo "int main() { return(0); }" > "${temp}".c
460 MY_CC=$(tc-getCC)
461 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
462 local ret=$?
463 rm -f "${temp}".c
464 [[ ${ret} != 1 ]] && return 0
465 return 1
466}
467
468has_m32() {
469 # this doesnt test if the flag is accepted, it tests if the flag
470 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
471 # please dont replace this function with test_flag in some future
472 # clean-up!
473
474 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
475
476 local temp=$(emktemp)
477 echo "int main() { return(0); }" > "${temp}".c
478 MY_CC=$(tc-getCC)
479 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
480 local ret=$?
481 rm -f "${temp}".c
482 [[ ${ret} != 1 ]] && return 0
483 return 1
159} 484}
160 485
161replace-sparc64-flags() { 486replace-sparc64-flags() {
162 local SPARC64_CPUS="ultrasparc v9" 487 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
163 488
164 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] 489 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
165 then
166 for x in ${SPARC64_CPUS} 490 for x in ${SPARC64_CPUS}; do
167 do
168 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 491 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
169 done 492 done
170 else 493 else
171 for x in ${SPARC64_CPUS} 494 for x in ${SPARC64_CPUS}; do
172 do
173 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 495 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
174 done 496 done
175 fi 497 fi
176 498
177 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] 499 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
178 then
179 for x in ${SPARC64_CPUS} 500 for x in ${SPARC64_CPUS}; do
180 do
181 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 501 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
182 done 502 done
183 else 503 else
184 for x in ${SPARC64_CPUS} 504 for x in ${SPARC64_CPUS}; do
185 do
186 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 505 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
187 done 506 done
188 fi 507 fi
508
509 export CFLAGS CXXFLAGS
189} 510}
511
512append-ldflags() {
513 export LDFLAGS="${LDFLAGS} $*"
514 return 0
515}
516
517filter-ldflags() {
518 local x
519
520 # we do this fancy spacing stuff so as to not filter
521 # out part of a flag ... we want flag atoms ! :D
522 LDFLAGS=" ${LDFLAGS} "
523 for x in "$@" ; do
524 LDFLAGS=${LDFLAGS// ${x} / }
525 done
526 [[ -z ${LDFLAGS// } ]] \
527 && LDFLAGS="" \
528 || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
529 export LDFLAGS
530 return 0
531}
532
533# Turn C style ldflags (-Wl,-foo) into straight ldflags
534raw-ldflags() {
535 local x input="$@"
536 [[ -z ${input} ]] && input=${LDFLAGS}
537 set --
538 for x in ${input} ; do
539 x=${x#-Wl,}
540 set -- "$@" ${x//,/ }
541 done
542 echo "$@"
543}
544
545fstack-flags() {
546 if gcc-specs-ssp; then
547 [ -z "`is-flag -fno-stack-protector`" ] &&
548 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
549 fi
550 return 0
551}
552
553# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
554# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
555# fixes.
556#
557# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
558gcc2-flags() {
559 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
560 CFLAGS=${CFLAGS//-mtune=/-mcpu=}
561 CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
562 fi
563
564 replace-cpu-flags k6-{2,3} k6
565 replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
566
567 replace-cpu-flags pentium-mmx i586
568 replace-cpu-flags pentium{2,3,4} i686
569
570 replace-cpu-flags ev6{7,8} ev6
571
572 export CFLAGS CXXFLAGS
573}
574
575# Gets the flags needed for "NOW" binding
576bindnow-flags() {
577 case $($(tc-getLD) -v 2>&1 </dev/null) in
578 *GNU* | *'with BFD'*) # GNU ld
579 echo "-Wl,-z,now" ;;
580 *Apple*) # Darwin ld
581 echo "-bind_at_load" ;;
582 *)
583 # Some linkers just recognize -V instead of -v
584 case $($(tc-getLD) -V 2>&1 </dev/null) in
585 *Solaris*) # Solaris accept almost the same GNU options
586 echo "-Wl,-z,now" ;;
587 esac
588 ;;
589 esac
590}
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