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Revision 1.24 Revision 1.113
1# Copyright 1999-2003 Gentoo Technologies, Inc. 1# Copyright 1999-2006 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 1.113 2006/11/15 22:46:52 vapier Exp $
4# 4#
5# Author Bart Verwilst <verwilst@gentoo.org> 5# Maintainer: base-system@gentoo.org
6 6
7ECLASS=flag-o-matic 7# need access to emktemp()
8INHERITED="$INHERITED $ECLASS" 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 <old.cpus> <new.cpu> ###
22# Replace march/mcpu flags that specify <old.cpus>
23# with flags that specify <new.cpu>
24#
21#### is-flag <flag> #### 25#### is-flag[q] <flag> ####
22# Returns "true" if flag is set in C[XX]FLAGS 26# Returns "true" if flag is set in C[XX]FLAGS
23# Matches only complete a flag 27# Matches only complete a flag
28# q version sets return code but doesn't echo
29#
30#### is-ldflag[q] <flag> ####
31# Returns "true" if flag is set in LDFLAGS
32# Matches only complete a flag
33# q version sets return code but doesn't echo
24# 34#
25#### strip-flags #### 35#### strip-flags ####
26# Strip C[XX]FLAGS of everything except known 36# Strip C[XX]FLAGS of everything except known
27# good options. 37# good options.
28# 38#
39#### strip-unsupported-flags ####
40# Strip C[XX]FLAGS of any flags not supported by
41# installed version of gcc
42#
29#### get-flag <flag> #### 43#### get-flag <flag> ####
30# Find and echo the value for a particular flag 44# Find and echo the value for a particular flag
31# 45#
32#### replace-sparc64-flags #### 46#### replace-sparc64-flags ####
33# Sets mcpu to v8 and uses the original value 47# Sets mcpu to v8 and uses the original value
34# as mtune if none specified. 48# as mtune if none specified.
35# 49#
36 50#### filter-mfpmath <math types> ####
51# Remove specified math types from the fpmath specification
52# If the user has -mfpmath=sse,386, running `filter-mfpmath sse`
53# will leave the user with -mfpmath=386
54#
55#### append-ldflags ####
56# Add extra flags to your current LDFLAGS
57#
58#### filter-ldflags <flags> ####
59# Remove particular flags from LDFLAGS
60# Matches only complete flags
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="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time"
102 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
103 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident"
104 fi
105 # allow a bunch of flags that negate features / control ABI
106 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
107 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
108 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
109 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
110 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
111 -mieee -mieee-with-inexact -mschedule \
112 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
113 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
114 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
115 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias"
44 116
45# C[XX]FLAGS that we are think is ok, but needs testing 117 # C[XX]FLAGS that we are think is ok, but needs testing
46# NOTE: currently -Os have issues with gcc3 and K6* arch's 118 # NOTE: currently -Os have issues with gcc3 and K6* arch's
47UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 119 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
120 return 0
121}
122
123# inverted filters for hardened compiler. This is trying to unpick
124# the hardened compiler defaults.
125_filter-hardened() {
126 local f
127 for f in "$@" ; do
128 case "${f}" in
129 # Ideally we should only concern ourselves with PIE flags,
130 # not -fPIC or -fpic, but too many places filter -fPIC without
131 # thinking about -fPIE.
132 -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
133 gcc-specs-pie || continue
134 is-flagq -nopie || append-flags -nopie;;
135 -fstack-protector)
136 gcc-specs-ssp || continue
137 is-flagq -fno-stack-protector || append-flags -fno-stack-protector;;
138 -fstack-protector-all)
139 gcc-specs-ssp-to-all || continue
140 is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;;
141 esac
142 done
143}
144
145# Remove occurrences of strings from variable given in $1
146# Strings removed are matched as globs, so for example
147# '-O*' would remove -O1, -O2 etc.
148_filter-var() {
149 local f x VAR VAL
150 declare -a new
151
152 VAR=$1
153 shift
154 eval VAL=\${${VAR}}
155 for f in ${VAL}; do
156 for x in "$@"; do
157 # Note this should work with globs like -O*
158 [[ ${f} == ${x} ]] && continue 2
159 done
160 eval new\[\${\#new\[@]}]=\${f}
161 done
162 eval export ${VAR}=\${new\[*]}
163}
164
165filter-flags() {
166 _filter-hardened "$@"
167 _filter-var CFLAGS "$@"
168 _filter-var CXXFLAGS "$@"
169 return 0
170}
171
172filter-lfs-flags() {
173 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
174 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
175}
176
177append-lfs-flags() {
178 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
179 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
180}
181
182append-flags() {
183 [[ -z $* ]] && return 0
184 export CFLAGS="${CFLAGS} $*"
185 export CXXFLAGS="${CXXFLAGS} $*"
186 return 0
187}
188
189replace-flags() {
190 [[ $# != 2 ]] \
191 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
192 && die "replace-flags takes 2 arguments, not $#"
193
194 local f fset
195 declare -a new_CFLAGS new_CXXFLAGS
196
197 for fset in CFLAGS CXXFLAGS; do
198 # Looping over the flags instead of using a global
199 # substitution ensures that we're working with flag atoms.
200 # Otherwise globs like -O* have the potential to wipe out the
201 # list of flags.
202 for f in ${!fset}; do
203 # Note this should work with globs like -O*
204 [[ ${f} == ${1} ]] && f=${2}
205 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
206 done
207 eval export ${fset}=\${new_${fset}\[*]}
208 done
209
210 return 0
211}
212
213replace-cpu-flags() {
214 local newcpu="$#" ; newcpu="${!newcpu}"
215 while [ $# -gt 1 ] ; do
216 # quote to make sure that no globbing is done (particularly on
217 # ${oldcpu}) prior to calling replace-flags
218 replace-flags "-march=${1}" "-march=${newcpu}"
219 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
220 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
221 shift
222 done
223 return 0
224}
225
226_is_flagq() {
227 local x
228 for x in ${!1} ; do
229 [[ ${x} == $2 ]] && return 0
230 done
231 return 1
232}
233
234is-flagq() {
235 [[ -n $2 ]] && die "Usage: is-flag <flag>"
236 _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1
237}
238
239is-flag() {
240 is-flagq "$@" && echo true
241}
242
243is-ldflagq() {
244 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
245 _is_flagq LDFLAGS $1
246}
247
248is-ldflag() {
249 is-ldflagq "$@" && echo true
250}
48 251
49filter-mfpmath() { 252filter-mfpmath() {
50 for a in $CFLAGS; do 253 local orig_mfpmath new_math prune_math
51 if [ "${a:0:8}" == "-mfpmath" ]; then
52 orig_mfpmath=$a
53 fi
54 done
55 254
56 mfpmath="$( echo $orig_mfpmath | awk -F '=' '{print $2}' | tr "," " " )" 255 # save the original -mfpmath flag
57 for b in $@; do 256 orig_mfpmath=$(get-flag -mfpmath)
58 mfpmath="${mfpmath/$b}" 257 # get the value of the current -mfpmath flag
258 new_math=$(get-flag mfpmath)
259 new_math=" ${new_math//,/ } "
260 # figure out which math values are to be removed
261 prune_math=""
262 for prune_math in "$@" ; do
263 new_math=${new_math/ ${prune_math} / }
59 done 264 done
265 new_math=$(echo ${new_math})
266 new_math=${new_math// /,}
60 267
61 if [ -z "${mfpmath/ }" ]; then 268 if [[ -z ${new_math} ]] ; then
269 # if we're removing all user specified math values are
270 # slated for removal, then we just filter the flag
62 filter-flags "$orig_mfpmath" 271 filter-flags ${orig_mfpmath}
63 else 272 else
64 new_mfpmath="-mfpmath=$( echo $mfpmath | sed -e "s/ /,/g" -e "s/,,/,/g" )" 273 # if we only want to filter some of the user specified
65 replace-flags "$orig_mfpmath" "$new_mfpmath" 274 # math values, then we replace the current flag
275 replace-flags ${orig_mfpmath} -mfpmath=${new_math}
66 fi 276 fi
67}
68
69filter-flags() {
70 # we do this fancy spacing stuff so as to not filter
71 # out part of a flag ... we want flag atoms ! :D
72 export CFLAGS=" ${CFLAGS} "
73 export CXXFLAGS=" ${CXXFLAGS} "
74 for x in $@ ; do
75 export CFLAGS="${CFLAGS/ ${x} / }"
76 export CXXFLAGS="${CXXFLAGS/ ${x} / }"
77 done
78 export CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
79 export CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
80}
81
82append-flags() {
83 CFLAGS="${CFLAGS} $@"
84 CXXFLAGS="${CXXFLAGS} $@"
85}
86
87replace-flags() {
88 CFLAGS="${CFLAGS/${1}/${2} }"
89 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
90}
91
92is-flag() {
93 for x in ${CFLAGS} ${CXXFLAGS} ; do
94 if [ "${x}" == "$1" ] ; then
95 echo true
96 return 0 277 return 0
97 fi
98 done
99 return 1
100} 278}
101 279
102strip-flags() { 280strip-flags() {
281 local x y flag NEW_CFLAGS NEW_CXXFLAGS
282
283 setup-allowed-flags
284
103 local NEW_CFLAGS="" 285 local NEW_CFLAGS=""
104 local NEW_CXXFLAGS="" 286 local NEW_CXXFLAGS=""
105 287
106 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 288 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
107 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then 289 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
108 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
109 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 290 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
110 fi 291 fi
111 292
112 set -f 293 set -f # disable pathname expansion
113 294
114 for x in ${CFLAGS} 295 for x in ${CFLAGS}; do
115 do
116 for y in ${ALLOWED_FLAGS} 296 for y in ${ALLOWED_FLAGS}; do
117 do
118 flag=${x%%=*} 297 flag=${x%%=*}
119 if [ "${flag%%${y}}" = "" ] 298 if [ "${flag%%${y}}" = "" ] ; then
120 then
121 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 299 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
122 break 300 break
123 fi 301 fi
124 done 302 done
125 done 303 done
126 304
127 for x in ${CXXFLAGS} 305 for x in ${CXXFLAGS}; do
128 do
129 for y in ${ALLOWED_FLAGS} 306 for y in ${ALLOWED_FLAGS}; do
130 do
131 flag=${x%%=*} 307 flag=${x%%=*}
132 if [ "${flag%%${y}}" = "" ] 308 if [ "${flag%%${y}}" = "" ] ; then
133 then
134 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 309 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
135 break 310 break
136 fi 311 fi
137 done 312 done
138 done 313 done
139 314
140 set +f 315 # In case we filtered out all optimization flags fallback to -O2
316 if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
317 NEW_CFLAGS="${NEW_CFLAGS} -O2"
318 fi
319 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
320 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
321 fi
141 322
142 [ `use debug` ] \ 323 set +f # re-enable pathname expansion
143 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
144 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
145 324
146 export CFLAGS="${NEW_CFLAGS}" 325 export CFLAGS="${NEW_CFLAGS}"
147 export CXXFLAGS="${NEW_CXXFLAGS}" 326 export CXXFLAGS="${NEW_CXXFLAGS}"
327 return 0
328}
329
330test-flag-PROG() {
331 local comp=$1
332 local flags="$2"
333
334 [[ -z ${comp} || -z ${flags} ]] && \
335 return 1
336
337 local PROG=$(tc-get${comp})
338 ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
339 > /dev/null 2>&1
340}
341
342# Returns true if C compiler support given flag
343test-flag-CC() { test-flag-PROG "CC" "$1"; }
344
345# Returns true if C++ compiler support given flag
346test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
347
348test-flags-PROG() {
349 local comp=$1
350 local flags
351 local x
352
353 shift
354
355 [[ -z ${comp} ]] && return 1
356
357 x=""
358 for x in "$@" ; do
359 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
360 done
361
362 echo "${flags}"
363
364 # Just bail if we dont have any flags
365 [[ -n ${flags} ]]
366}
367
368# Returns (echo's) the given flags supported by the C compiler
369test-flags-CC() { test-flags-PROG "CC" "$@"; }
370
371# Returns (echo's) the given flags supported by the C++ compiler
372test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
373
374# Short-hand that should hopefully work for both C and C++ compiler, but
375# its really only present due to the append-flags() abomination.
376test-flags() { test-flags-CC "$@"; }
377
378# Depriciated, use test-flags()
379test_flag() {
380 ewarn "test_flag: deprecated, please use test-flags()!" >&2
381
382 test-flags-CC "$@"
383}
384
385test_version_info() {
386 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
387 return 0
388 else
389 return 1
390 fi
391}
392
393strip-unsupported-flags() {
394 export CFLAGS=$(test-flags-CC ${CFLAGS})
395 export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
148} 396}
149 397
150get-flag() { 398get-flag() {
151 local findflag="$1" 399 local f findflag="$1"
152 400
401 # this code looks a little flaky but seems to work for
402 # everything we want ...
403 # for example, if CFLAGS="-march=i686":
404 # `get-flag -march` == "-march=i686"
405 # `get-flag march` == "i686"
153 for f in ${CFLAGS} ${CXXFLAGS} ; do 406 for f in ${CFLAGS} ${CXXFLAGS} ; do
154 if [ "${f/${findflag}}" != "${f}" ] ; then 407 if [ "${f/${findflag}}" != "${f}" ] ; then
155 echo "${f/-${findflag}=}" 408 printf "%s\n" "${f/-${findflag}=}"
156 return 409 return 0
157 fi 410 fi
158 done 411 done
412 return 1
413}
414
415# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
416has_hardened() {
417 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
418
419 test_version_info Hardened && return 0
420 # The specs file wont exist unless gcc has GCC_SPECS support
421 [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
422}
423
424# DEPRECATED - use gcc-specs-pie from toolchain-funcs
425# indicate whether PIC is set
426has_pic() {
427 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
428
429 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
430 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
431 gcc-specs-pie
432}
433
434# DEPRECATED - use gcc-specs-pie from toolchain-funcs
435# indicate whether PIE is set
436has_pie() {
437 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
438
439 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
440 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
441 gcc-specs-pie
442}
443
444# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
445# indicate whether code for SSP is being generated for all functions
446has_ssp_all() {
447 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
448
449 # note; this matches only -fstack-protector-all
450 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
451 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
452 gcc-specs-ssp-all
453}
454
455# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
456# indicate whether code for SSP is being generated
457has_ssp() {
458 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
459
460 # note; this matches both -fstack-protector and -fstack-protector-all
461 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
462 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
463 gcc-specs-ssp
464}
465
466has_m64() {
467 # this doesnt test if the flag is accepted, it tests if the flag
468 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
469 # please dont replace this function with test_flag in some future
470 # clean-up!
471
472 local temp="$(emktemp)"
473 echo "int main() { return(0); }" > "${temp}".c
474 MY_CC=$(tc-getCC)
475 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
476 local ret=$?
477 rm -f "${temp}".c
478 [[ ${ret} != 1 ]] && return 0
479 return 1
480}
481
482has_m32() {
483 # this doesnt test if the flag is accepted, it tests if the flag
484 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
485 # please dont replace this function with test_flag in some future
486 # clean-up!
487
488 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
489
490 local temp=$(emktemp)
491 echo "int main() { return(0); }" > "${temp}".c
492 MY_CC=$(tc-getCC)
493 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
494 local ret=$?
495 rm -f "${temp}".c
496 [[ ${ret} != 1 ]] && return 0
497 return 1
159} 498}
160 499
161replace-sparc64-flags() { 500replace-sparc64-flags() {
162 local SPARC64_CPUS="ultrasparc v9" 501 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
163 502
164 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] 503 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
165 then
166 for x in ${SPARC64_CPUS} 504 for x in ${SPARC64_CPUS}; do
167 do
168 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 505 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
169 done 506 done
170 else 507 else
171 for x in ${SPARC64_CPUS} 508 for x in ${SPARC64_CPUS}; do
172 do
173 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 509 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
174 done 510 done
175 fi 511 fi
176 512
177 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] 513 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
178 then
179 for x in ${SPARC64_CPUS} 514 for x in ${SPARC64_CPUS}; do
180 do
181 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 515 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
182 done 516 done
183 else 517 else
184 for x in ${SPARC64_CPUS} 518 for x in ${SPARC64_CPUS}; do
185 do
186 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 519 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
187 done 520 done
188 fi 521 fi
522
523 export CFLAGS CXXFLAGS
189} 524}
525
526append-ldflags() {
527 [[ -z $* ]] && return 0
528 export LDFLAGS="${LDFLAGS} $*"
529 return 0
530}
531
532# Remove flags from LDFLAGS - it's up to the ebuild to filter
533# CFLAGS and CXXFLAGS via filter-flags if they need to.
534filter-ldflags() {
535 _filter-var LDFLAGS "$@"
536 return 0
537}
538
539# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
540# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
541# to gcc where it needs the '-Wl,'.
542raw-ldflags() {
543 local x input="$@"
544 [[ -z ${input} ]] && input=${LDFLAGS}
545 set --
546 for x in ${input} ; do
547 x=${x#-Wl,}
548 set -- "$@" ${x//,/ }
549 done
550 echo "$@"
551}
552
553# Gets the flags needed for "NOW" binding
554bindnow-flags() {
555 case $($(tc-getLD) -v 2>&1 </dev/null) in
556 *GNU* | *'with BFD'*) # GNU ld
557 echo "-Wl,-z,now" ;;
558 *Apple*) # Darwin ld
559 echo "-bind_at_load" ;;
560 *)
561 # Some linkers just recognize -V instead of -v
562 case $($(tc-getLD) -V 2>&1 </dev/null) in
563 *Solaris*) # Solaris accept almost the same GNU options
564 echo "-Wl,-z,now" ;;
565 esac
566 ;;
567 esac
568}
569
570
571# Some tests for when we screw with things and want to make
572# sure we didn't break anything
573#TESTS() {
574# CFLAGS="-a -b -c=1"
575# CXXFLAGS="-x -y -z=2"
576# LDFLAGS="-l -m -n=3"
577#
578# die() { exit 1; }
579# (is-flag 1 2 3) && die
580# (is-ldflag 1 2 3) && die
581#
582# is-flagq -l && die
583# is-ldflagq -a && die
584# is-flagq -a || die
585# is-flagq -x || die
586# is-ldflagq -n=* || die
587# is-ldflagq -n && die
588#
589# strip-unsupported-flags
590# [[ ${CFLAGS} == "-c=1" ]] || die
591# [[ ${CXXFLAGS} == "-y -z=2" ]] || die
592#
593# echo "All tests pass"
594#}
595#TESTS

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