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1# Copyright 1999-2002 Gentoo Technologies, Inc. 1# Copyright 1999-2007 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# Author Bart Verwilst <verwilst@gentoo.org>
4# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.11 2002/12/22 12:11:56 cretin Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.117 2007/03/04 21:13:17 vapier Exp $
5
6ECLASS=flag-o-matic
7INHERITED="$INHERITED $ECLASS"
8
9# 4#
5# Maintainer: toolchain@gentoo.org
6
7# need access to emktemp()
8inherit eutils toolchain-funcs multilib
9
10#
10#### filter-flags <flag> #### 11#### filter-flags <flags> ####
11# Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags
12# 14#
13#### append-flags <flag> #### 15#### append-flags <flags> ####
14# Add extra flags to your current C[XX]FLAGS 16# Add extra flags to your current C[XX]FLAGS
15# 17#
16#### replace-flags <orig.flag> <new.flag> ### 18#### replace-flags <orig.flag> <new.flag> ###
17# Replace a flag by another one 19# Replace a flag by another one
18# 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#
19#### is-flag <flag> #### 25#### is-flag[q] <flag> ####
20# Returns "true" if flag is set in C[XX]FLAGS 26# Returns "true" if flag is set in C[XX]FLAGS
21# Matches only complete 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
22# 34#
23#### strip-flags #### 35#### strip-flags ####
24# Strip C[XX]FLAGS of everything except known 36# Strip C[XX]FLAGS of everything except known
25# good options. 37# good options.
26# 38#
39#### strip-unsupported-flags ####
40# Strip C[XX]FLAGS of any flags not supported by
41# installed version of gcc
42#
27#### get-flag <flag> #### 43#### get-flag <flag> ####
28# Find and echo the value for a particular flag 44# Find and echo the value for a particular flag
29# 45#
46#### replace-sparc64-flags ####
47# Sets mcpu to v8 and uses the original value
48# as mtune if none specified.
49#
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#
30 93
94# C[XX]FLAGS that we allow in strip-flags
95# Note: shell globs and character lists are allowed
96setup-allowed-flags() {
97 if [[ -z ${ALLOWED_FLAGS} ]] ; then
98 export ALLOWED_FLAGS="-pipe"
99 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
100 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
101 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
102 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time"
103 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+"
104 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident"
105 fi
106 # allow a bunch of flags that negate features / control ABI
107 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
108 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
109 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
110 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
111 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
112 -mieee -mieee-with-inexact -mschedule \
113 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
114 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
115 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
116 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \
117 -msecure-plt -D*"
118
119 # C[XX]FLAGS that we are think is ok, but needs testing
120 # NOTE: currently -Os have issues with gcc3 and K6* arch's
121 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
122 return 0
123}
124
125# inverted filters for hardened compiler. This is trying to unpick
126# the hardened compiler defaults.
127_filter-hardened() {
128 local f
129 for f in "$@" ; do
130 case "${f}" in
131 # Ideally we should only concern ourselves with PIE flags,
132 # not -fPIC or -fpic, but too many places filter -fPIC without
133 # thinking about -fPIE.
134 -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
135 gcc-specs-pie || continue
136 is-flagq -nopie || append-flags -nopie;;
137 -fstack-protector)
138 gcc-specs-ssp || continue
139 is-flagq -fno-stack-protector || append-flags -fno-stack-protector;;
140 -fstack-protector-all)
141 gcc-specs-ssp-to-all || continue
142 is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;;
143 esac
144 done
145}
146
147# Remove occurrences of strings from variable given in $1
148# Strings removed are matched as globs, so for example
149# '-O*' would remove -O1, -O2 etc.
150_filter-var() {
151 local f x VAR VAL
152 declare -a new
153
154 VAR=$1
155 shift
156 eval VAL=\${${VAR}}
157 for f in ${VAL}; do
158 for x in "$@"; do
159 # Note this should work with globs like -O*
160 [[ ${f} == ${x} ]] && continue 2
161 done
162 eval new\[\${\#new\[@]}]=\${f}
163 done
164 eval export ${VAR}=\${new\[*]}
165}
166
31filter-flags () { 167filter-flags() {
32 168 _filter-hardened "$@"
33 for x in $1 169 _filter-var CFLAGS "$@"
34 do 170 _filter-var CXXFLAGS "$@"
35 export CFLAGS="${CFLAGS/${x}}" 171 return 0
36 export CXXFLAGS="${CXXFLAGS/${x}}"
37 done
38
39} 172}
40 173
174filter-lfs-flags() {
175 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
176 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
177}
178
179append-lfs-flags() {
180 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
181 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
182}
183
41append-flags () { 184append-flags() {
42 185 [[ -z $* ]] && return 0
43 CFLAGS="${CFLAGS} $1" 186 export CFLAGS="${CFLAGS} $*"
44 CXXFLAGS="${CXXFLAGS} $1" 187 export CXXFLAGS="${CXXFLAGS} $*"
45 188 return 0
46} 189}
47 190
48replace-flags () { 191replace-flags() {
192 [[ $# != 2 ]] \
193 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
194 && die "replace-flags takes 2 arguments, not $#"
49 195
50 CFLAGS="${CFLAGS/${1}/${2} }" 196 local f fset
51 CXXFLAGS="${CXXFLAGS/${1}/${2} }" 197 declare -a new_CFLAGS new_CXXFLAGS
52 198
199 for fset in CFLAGS CXXFLAGS; do
200 # Looping over the flags instead of using a global
201 # substitution ensures that we're working with flag atoms.
202 # Otherwise globs like -O* have the potential to wipe out the
203 # list of flags.
204 for f in ${!fset}; do
205 # Note this should work with globs like -O*
206 [[ ${f} == ${1} ]] && f=${2}
207 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
208 done
209 eval export ${fset}=\${new_${fset}\[*]}
210 done
211
212 return 0
213}
214
215replace-cpu-flags() {
216 local newcpu="$#" ; newcpu="${!newcpu}"
217 while [ $# -gt 1 ] ; do
218 # quote to make sure that no globbing is done (particularly on
219 # ${oldcpu}) prior to calling replace-flags
220 replace-flags "-march=${1}" "-march=${newcpu}"
221 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
222 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
223 shift
224 done
225 return 0
226}
227
228_is_flagq() {
229 local x
230 for x in ${!1} ; do
231 [[ ${x} == $2 ]] && return 0
232 done
233 return 1
234}
235
236is-flagq() {
237 [[ -n $2 ]] && die "Usage: is-flag <flag>"
238 _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1
53} 239}
54 240
55is-flag() { 241is-flag() {
242 is-flagq "$@" && echo true
243}
56 244
57 for x in ${CFLAGS} ${CXXFLAGS} 245is-ldflagq() {
246 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
247 _is_flagq LDFLAGS $1
248}
249
250is-ldflag() {
251 is-ldflagq "$@" && echo true
252}
253
254filter-mfpmath() {
255 local orig_mfpmath new_math prune_math
256
257 # save the original -mfpmath flag
258 orig_mfpmath=$(get-flag -mfpmath)
259 # get the value of the current -mfpmath flag
260 new_math=$(get-flag mfpmath)
261 new_math=" ${new_math//,/ } "
262 # figure out which math values are to be removed
263 prune_math=""
264 for prune_math in "$@" ; do
265 new_math=${new_math/ ${prune_math} / }
58 do 266 done
59 if [ "${x}" = "$1" ] 267 new_math=$(echo ${new_math})
60 then 268 new_math=${new_math// /,}
61 echo true
62 break
63 fi
64 done
65 269
270 if [[ -z ${new_math} ]] ; then
271 # if we're removing all user specified math values are
272 # slated for removal, then we just filter the flag
273 filter-flags ${orig_mfpmath}
274 else
275 # if we only want to filter some of the user specified
276 # math values, then we replace the current flag
277 replace-flags ${orig_mfpmath} -mfpmath=${new_math}
278 fi
279 return 0
66} 280}
67 281
68strip-flags() { 282strip-flags() {
283 local x y flag NEW_CFLAGS NEW_CXXFLAGS
284
285 setup-allowed-flags
69 286
70 local NEW_CFLAGS="" 287 local NEW_CFLAGS=""
71 local NEW_CXXFLAGS="" 288 local NEW_CXXFLAGS=""
72 289
73 local ALLOWED_FLAGS="-O -mcpu -march -pipe -g" 290 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
291 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
292 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
293 fi
74 294
75 set -f 295 set -f # disable pathname expansion
76 296
77 for x in ${CFLAGS} 297 for x in ${CFLAGS}; do
78 do
79 for y in ${ALLOWED_FLAGS} 298 for y in ${ALLOWED_FLAGS}; do
80 do 299 flag=${x%%=*}
81 if [ "${x/${y}}" != "${x}" ] 300 if [ "${flag%%${y}}" = "" ] ; then
82 then
83 if [ -z "${NEW_CFLAGS}" ]
84 then
85 NEW_CFLAGS="${x}"
86 else
87 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 301 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
88 fi 302 break
89 fi 303 fi
90 done 304 done
91 done 305 done
92 306
93 for x in ${CXXFLAGS} 307 for x in ${CXXFLAGS}; do
94 do
95 for y in ${ALLOWED_FLAGS} 308 for y in ${ALLOWED_FLAGS}; do
96 do 309 flag=${x%%=*}
97 if [ "${x/${y}}" != "${x}" ] 310 if [ "${flag%%${y}}" = "" ] ; then
98 then
99 if [ -z "${NEW_CXXFLAGS}" ]
100 then
101 NEW_CXXFLAGS="${x}"
102 else
103 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 311 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
104 fi 312 break
105 fi 313 fi
106 done 314 done
107 done 315 done
108 316
109 set +f 317 # In case we filtered out all optimization flags fallback to -O2
318 if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
319 NEW_CFLAGS="${NEW_CFLAGS} -O2"
320 fi
321 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
322 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
323 fi
324
325 set +f # re-enable pathname expansion
110 326
111 export CFLAGS="${NEW_CFLAGS}" 327 export CFLAGS="${NEW_CFLAGS}"
112 export CXXFLAGS="${NEW_CXXFLAGS}" 328 export CXXFLAGS="${NEW_CXXFLAGS}"
329 return 0
330}
331
332test-flag-PROG() {
333 local comp=$1
334 local flags="$2"
335
336 [[ -z ${comp} || -z ${flags} ]] && \
337 return 1
338
339 local PROG=$(tc-get${comp})
340 ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
341 > /dev/null 2>&1
342}
343
344# Returns true if C compiler support given flag
345test-flag-CC() { test-flag-PROG "CC" "$1"; }
346
347# Returns true if C++ compiler support given flag
348test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
349
350test-flags-PROG() {
351 local comp=$1
352 local flags
353 local x
354
355 shift
356
357 [[ -z ${comp} ]] && return 1
358
359 x=""
360 for x in "$@" ; do
361 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
362 done
363
364 echo "${flags}"
365
366 # Just bail if we dont have any flags
367 [[ -n ${flags} ]]
368}
369
370# Returns (echo's) the given flags supported by the C compiler
371test-flags-CC() { test-flags-PROG "CC" "$@"; }
372
373# Returns (echo's) the given flags supported by the C++ compiler
374test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
375
376# Short-hand that should hopefully work for both C and C++ compiler, but
377# its really only present due to the append-flags() abomination.
378test-flags() { test-flags-CC "$@"; }
379
380# Depriciated, use test-flags()
381test_flag() {
382 ewarn "test_flag: deprecated, please use test-flags()!" >&2
383
384 test-flags-CC "$@"
385}
386
387test_version_info() {
388 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
389 return 0
390 else
391 return 1
392 fi
393}
394
395strip-unsupported-flags() {
396 export CFLAGS=$(test-flags-CC ${CFLAGS})
397 export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
113} 398}
114 399
115get-flag() { 400get-flag() {
116 local findflag="$1" 401 local f findflag="$1"
117 402
403 # this code looks a little flaky but seems to work for
404 # everything we want ...
405 # for example, if CFLAGS="-march=i686":
406 # `get-flag -march` == "-march=i686"
407 # `get-flag march` == "i686"
118 for f in ${CFLAGS} ${CXXFLAGS} ; do 408 for f in ${CFLAGS} ${CXXFLAGS} ; do
119 if [ "${f/${findflag}}" != "${f}" ] ; then 409 if [ "${f/${findflag}}" != "${f}" ] ; then
120 echo "${f/-${findflag}=}" 410 printf "%s\n" "${f/-${findflag}=}"
121 return 411 return 0
122 fi 412 fi
123 done 413 done
414 return 1
124} 415}
416
417# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
418has_hardened() {
419 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
420
421 test_version_info Hardened && return 0
422 # The specs file wont exist unless gcc has GCC_SPECS support
423 [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
424}
425
426# DEPRECATED - use gcc-specs-pie from toolchain-funcs
427# indicate whether PIC is set
428has_pic() {
429 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
430
431 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
432 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
433 gcc-specs-pie
434}
435
436# DEPRECATED - use gcc-specs-pie from toolchain-funcs
437# indicate whether PIE is set
438has_pie() {
439 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
440
441 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
442 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
443 gcc-specs-pie
444}
445
446# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
447# indicate whether code for SSP is being generated for all functions
448has_ssp_all() {
449 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
450
451 # note; this matches only -fstack-protector-all
452 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
453 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
454 gcc-specs-ssp-all
455}
456
457# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
458# indicate whether code for SSP is being generated
459has_ssp() {
460 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
461
462 # note; this matches both -fstack-protector and -fstack-protector-all
463 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
464 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
465 gcc-specs-ssp
466}
467
468has_m64() {
469 # this doesnt test if the flag is accepted, it tests if the flag
470 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
471 # please dont replace this function with test_flag in some future
472 # clean-up!
473
474 local temp="$(emktemp)"
475 echo "int main() { return(0); }" > "${temp}".c
476 MY_CC=$(tc-getCC)
477 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
478 local ret=$?
479 rm -f "${temp}".c
480 [[ ${ret} != 1 ]] && return 0
481 return 1
482}
483
484has_m32() {
485 # this doesnt test if the flag is accepted, it tests if the flag
486 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
487 # please dont replace this function with test_flag in some future
488 # clean-up!
489
490 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
491
492 local temp=$(emktemp)
493 echo "int main() { return(0); }" > "${temp}".c
494 MY_CC=$(tc-getCC)
495 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
496 local ret=$?
497 rm -f "${temp}".c
498 [[ ${ret} != 1 ]] && return 0
499 return 1
500}
501
502replace-sparc64-flags() {
503 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
504
505 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
506 for x in ${SPARC64_CPUS}; do
507 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
508 done
509 else
510 for x in ${SPARC64_CPUS}; do
511 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
512 done
513 fi
514
515 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
516 for x in ${SPARC64_CPUS}; do
517 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
518 done
519 else
520 for x in ${SPARC64_CPUS}; do
521 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
522 done
523 fi
524
525 export CFLAGS CXXFLAGS
526}
527
528append-ldflags() {
529 [[ -z $* ]] && return 0
530 export LDFLAGS="${LDFLAGS} $*"
531 return 0
532}
533
534# Remove flags from LDFLAGS - it's up to the ebuild to filter
535# CFLAGS and CXXFLAGS via filter-flags if they need to.
536filter-ldflags() {
537 _filter-var LDFLAGS "$@"
538 return 0
539}
540
541# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
542# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
543# to gcc where it needs the '-Wl,'.
544raw-ldflags() {
545 local x input="$@"
546 [[ -z ${input} ]] && input=${LDFLAGS}
547 set --
548 for x in ${input} ; do
549 x=${x#-Wl,}
550 set -- "$@" ${x//,/ }
551 done
552 echo "$@"
553}
554
555# Gets the flags needed for "NOW" binding
556bindnow-flags() {
557 case $($(tc-getLD) -v 2>&1 </dev/null) in
558 *GNU* | *'with BFD'*) # GNU ld
559 echo "-Wl,-z,now" ;;
560 *Apple*) # Darwin ld
561 echo "-bind_at_load" ;;
562 *)
563 # Some linkers just recognize -V instead of -v
564 case $($(tc-getLD) -V 2>&1 </dev/null) in
565 *Solaris*) # Solaris accept almost the same GNU options
566 echo "-Wl,-z,now" ;;
567 esac
568 ;;
569 esac
570}
571
572
573# Some tests for when we screw with things and want to make
574# sure we didn't break anything
575#TESTS() {
576# CFLAGS="-a -b -c=1"
577# CXXFLAGS="-x -y -z=2"
578# LDFLAGS="-l -m -n=3"
579#
580# die() { exit 1; }
581# (is-flag 1 2 3) && die
582# (is-ldflag 1 2 3) && die
583#
584# is-flagq -l && die
585# is-ldflagq -a && die
586# is-flagq -a || die
587# is-flagq -x || die
588# is-ldflagq -n=* || die
589# is-ldflagq -n && die
590#
591# strip-unsupported-flags
592# [[ ${CFLAGS} == "-c=1" ]] || die
593# [[ ${CXXFLAGS} == "-y -z=2" ]] || die
594#
595# echo "All tests pass"
596#}
597#TESTS

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