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Revision 1.107 - (hide annotations) (download)
Sat Apr 15 00:44:16 2006 UTC (8 years, 7 months ago) by vapier
Branch: MAIN
Changes since 1.106: +2 -1 lines
allow -fno-ident #129763 by Nicholas Doyle

1 vapier 1.84 # Copyright 1999-2005 Gentoo Foundation
2 verwilst 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.107 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.106 2006/02/19 23:18:30 vapier Exp $
4 azarah 1.8
5 vapier 1.63
6 vapier 1.72 # need access to emktemp()
7 eradicator 1.80 inherit eutils toolchain-funcs multilib
8 vapier 1.72
9 verwilst 1.2 #
10 vapier 1.18 #### filter-flags <flags> ####
11 verwilst 1.3 # Remove particular flags from C[XX]FLAGS
12 vapier 1.18 # Matches only complete flags
13 verwilst 1.2 #
14 vapier 1.18 #### append-flags <flags> ####
15 verwilst 1.3 # Add extra flags to your current C[XX]FLAGS
16     #
17 verwilst 1.4 #### replace-flags <orig.flag> <new.flag> ###
18 verwilst 1.3 # Replace a flag by another one
19     #
20 vapier 1.70 #### replace-cpu-flags <old.cpus> <new.cpu> ###
21 vapier 1.37 # Replace march/mcpu flags that specify <old.cpus>
22     # with flags that specify <new.cpu>
23     #
24 kevquinn 1.105 #### is-flag[q] <flag> ####
25 danarmak 1.7 # Returns "true" if flag is set in C[XX]FLAGS
26 vapier 1.18 # Matches only complete a flag
27 kevquinn 1.105 # q version sets return code but doesn't echo
28     #
29     #### is-ldflag[q] <flag> ####
30     # Returns "true" if flag is set in LDFLAGS
31     # Matches only complete a flag
32     # q version sets return code but doesn't echo
33 danarmak 1.7 #
34 azarah 1.8 #### strip-flags ####
35     # Strip C[XX]FLAGS of everything except known
36     # good options.
37     #
38 puggy 1.29 #### strip-unsupported-flags ####
39     # Strip C[XX]FLAGS of any flags not supported by
40     # installed version of gcc
41     #
42 vapier 1.10 #### get-flag <flag> ####
43     # Find and echo the value for a particular flag
44     #
45 joker 1.16 #### replace-sparc64-flags ####
46     # Sets mcpu to v8 and uses the original value
47     # as mtune if none specified.
48     #
49 vapier 1.26 #### filter-mfpmath <math types> ####
50     # Remove specified math types from the fpmath specification
51     # If the user has -mfpmath=sse,386, running `filter-mfpmath sse`
52     # will leave the user with -mfpmath=386
53 solar 1.27 #
54     #### append-ldflags ####
55     # Add extra flags to your current LDFLAGS
56     #
57 solar 1.41 #### filter-ldflags <flags> ####
58     # Remove particular flags from LDFLAGS
59     # Matches only complete flags
60     #
61 flameeyes 1.94 #### bindnow-flags ####
62     # Returns the flags to enable "now" binding in the current selected linker.
63 kevquinn 1.92 #
64     ################ DEPRECATED functions ################
65     # The following are still present to avoid breaking existing
66     # code more than necessary; however they are deprecated. Please
67     # use gcc-specs-* from toolchain-funcs.eclass instead, if you
68     # need to know which hardened techs are active in the compiler.
69     # See bug #100974
70     #
71     #### has_hardened ####
72     # Returns true if the compiler has 'Hardened' in its version string,
73     # (note; switched-spec vanilla compilers satisfy this condition) or
74     # the specs file name contains 'hardened'.
75     #
76     #### has_pie ####
77     # Returns true if the compiler by default or with current CFLAGS
78     # builds position-independent code.
79     #
80 solar 1.86 #### has_pic ####
81     # Returns true if the compiler by default or with current CFLAGS
82     # builds position-independent code.
83     #
84     #### has_ssp_all ####
85     # Returns true if the compiler by default or with current CFLAGS
86     # generates stack smash protections for all functions
87     #
88     #### has_ssp ####
89     # Returns true if the compiler by default or with current CFLAGS
90     # generates stack smash protections for most vulnerable functions
91     #
92 verwilst 1.3
93 azarah 1.17 # C[XX]FLAGS that we allow in strip-flags
94 vapier 1.36 setup-allowed-flags() {
95 vapier 1.84 if [[ -z ${ALLOWED_FLAGS} ]] ; then
96 vapier 1.76 export ALLOWED_FLAGS="-pipe"
97     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
98 vapier 1.87 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
99     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
100 kevquinn 1.105 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time"
101 vapier 1.76 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
102 vapier 1.107 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident"
103 vapier 1.44 fi
104 vapier 1.65 # allow a bunch of flags that negate features / control ABI
105     ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
106 vapier 1.87 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
107     -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
108     -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
109     -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
110 agriffis 1.90 -mieee -mieee-with-inexact \
111 vapier 1.91 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
112 vapier 1.87 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
113     -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
114     -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias"
115 vapier 1.36
116     # C[XX]FLAGS that we are think is ok, but needs testing
117     # NOTE: currently -Os have issues with gcc3 and K6* arch's
118 vapier 1.106 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
119 vapier 1.36 return 0
120 aliz 1.24 }
121 verwilst 1.13
122 kevquinn 1.105 # inverted filters for hardened compiler. This is trying to unpick
123     # the hardened compiler defaults.
124     _filter-hardened() {
125     local f
126     for f in "$@" ; do
127     case "${f}" in
128     # Ideally we should only concern ourselves with PIE flags,
129     # not -fPIC or -fpic, but too many places filter -fPIC without
130     # thinking about -fPIE.
131     -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
132     gcc-specs-pie || continue
133     is-flagq -nopie || append-flags -nopie;;
134     -fstack-protector)
135     gcc-specs-ssp || continue
136     is-flagq -fno-stack-protector || append-flags -fno-stack-protector;;
137     -fstack-protector-all)
138     gcc-specs-ssp-to-all || continue
139     is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;;
140 solar 1.27 esac
141     done
142 kevquinn 1.105 }
143    
144     # Remove occurrences of strings from variable given in $1
145     # Strings removed are matched as globs, so for example
146     # '-O*' would remove -O1, -O2 etc.
147     _filter-var() {
148     local f x VAR VAL
149     declare -a new
150 vapier 1.36
151 kevquinn 1.105 VAR=$1
152     shift
153     eval VAL=\${${VAR}}
154     for f in ${VAL}; do
155     for x in "$@"; do
156     # Note this should work with globs like -O*
157     [[ ${f} == ${x} ]] && continue 2
158 agriffis 1.61 done
159 kevquinn 1.105 eval new\[\${\#new\[@]}]=\${f}
160 verwilst 1.1 done
161 kevquinn 1.105 eval export ${VAR}=\${new\[*]}
162     }
163 agriffis 1.61
164 kevquinn 1.105 filter-flags() {
165     _filter-hardened "$@"
166     _filter-var CFLAGS "$@"
167     _filter-var CXXFLAGS "$@"
168 vapier 1.36 return 0
169 verwilst 1.2 }
170    
171 vapier 1.40 filter-lfs-flags() {
172 vapier 1.93 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
173 vapier 1.40 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
174     }
175    
176 vapier 1.48 append-lfs-flags() {
177 vapier 1.93 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
178 vapier 1.48 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
179     }
180    
181 vapier 1.18 append-flags() {
182 solar 1.82 [[ -z $* ]] && return 0
183 agriffis 1.58 export CFLAGS="${CFLAGS} $*"
184     export CXXFLAGS="${CXXFLAGS} $*"
185 vapier 1.28 return 0
186 verwilst 1.1 }
187    
188 vapier 1.18 replace-flags() {
189 vapier 1.93 [[ $# != 2 ]] \
190     && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
191     && die "replace-flags takes 2 arguments, not $#"
192    
193 mr_bones_ 1.83 local f fset
194 agriffis 1.64 declare -a new_CFLAGS new_CXXFLAGS
195    
196     for fset in CFLAGS CXXFLAGS; do
197     # Looping over the flags instead of using a global
198     # substitution ensures that we're working with flag atoms.
199     # Otherwise globs like -O* have the potential to wipe out the
200     # list of flags.
201     for f in ${!fset}; do
202     # Note this should work with globs like -O*
203     [[ ${f} == ${1} ]] && f=${2}
204     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
205     done
206     eval export ${fset}=\${new_${fset}\[*]}
207     done
208    
209 vapier 1.28 return 0
210 danarmak 1.7 }
211    
212 vapier 1.37 replace-cpu-flags() {
213 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
214     while [ $# -gt 1 ] ; do
215 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
216     # ${oldcpu} prior to calling replace-flags
217 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
218     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
219     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
220     shift
221 vapier 1.37 done
222     return 0
223     }
224    
225 kevquinn 1.105 is-flagq() {
226     local x
227    
228     for x in ${CFLAGS} ${CXXFLAGS} ; do
229     # Note this should work with globs like -mcpu=ultrasparc*
230     if [[ ${x} == ${1} ]]; then
231     return 0
232     fi
233     done
234     return 1
235     }
236    
237 danarmak 1.7 is-flag() {
238 kevquinn 1.105 if is-flagq ${1}; then
239     echo true
240     return 0
241     fi
242     return 1
243     }
244    
245     is-ldflagq() {
246 agriffis 1.58 local x
247    
248 kevquinn 1.105 for x in ${LDFLAGS} ; do
249 agriffis 1.67 # Note this should work with globs like -mcpu=ultrasparc*
250     if [[ ${x} == ${1} ]]; then
251 vapier 1.18 return 0
252     fi
253 danarmak 1.7 done
254 vapier 1.18 return 1
255 verwilst 1.1 }
256 azarah 1.8
257 kevquinn 1.105 is-ldflag() {
258     if is-ldflagq ${1}; then
259     echo true
260     return 0
261     fi
262     return 1
263     }
264    
265 vapier 1.36 filter-mfpmath() {
266 agriffis 1.58 local orig_mfpmath new_math prune_math
267    
268 vapier 1.36 # save the original -mfpmath flag
269 agriffis 1.58 orig_mfpmath="`get-flag -mfpmath`"
270 vapier 1.36 # get the value of the current -mfpmath flag
271 agriffis 1.58 new_math=" `get-flag mfpmath | tr , ' '` "
272 vapier 1.36 # figure out which math values are to be removed
273 agriffis 1.58 prune_math=""
274 vapier 1.36 for prune_math in "$@" ; do
275     new_math="${new_math/ ${prune_math} / }"
276     done
277     new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
278    
279     if [ -z "${new_math}" ] ; then
280     # if we're removing all user specified math values are
281     # slated for removal, then we just filter the flag
282     filter-flags ${orig_mfpmath}
283     else
284     # if we only want to filter some of the user specified
285     # math values, then we replace the current flag
286     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
287     fi
288     return 0
289     }
290    
291 azarah 1.8 strip-flags() {
292 agriffis 1.58 local x y flag NEW_CFLAGS NEW_CXXFLAGS
293    
294 vapier 1.36 setup-allowed-flags
295    
296 azarah 1.8 local NEW_CFLAGS=""
297     local NEW_CXXFLAGS=""
298    
299 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
300 vapier 1.84 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
301 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
302     fi
303    
304 agriffis 1.58 set -f # disable pathname expansion
305 azarah 1.8
306 agriffis 1.58 for x in ${CFLAGS}; do
307     for y in ${ALLOWED_FLAGS}; do
308 lostlogic 1.14 flag=${x%%=*}
309 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
310 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
311     break
312 azarah 1.8 fi
313     done
314     done
315    
316 agriffis 1.58 for x in ${CXXFLAGS}; do
317     for y in ${ALLOWED_FLAGS}; do
318 lostlogic 1.14 flag=${x%%=*}
319 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
320 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
321     break
322 azarah 1.8 fi
323     done
324     done
325 azarah 1.30
326     # In case we filtered out all optimization flags fallback to -O2
327     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
328     NEW_CFLAGS="${NEW_CFLAGS} -O2"
329     fi
330     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
331     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
332     fi
333 azarah 1.8
334 agriffis 1.58 set +f # re-enable pathname expansion
335 azarah 1.8
336     export CFLAGS="${NEW_CFLAGS}"
337     export CXXFLAGS="${NEW_CXXFLAGS}"
338 vapier 1.36 return 0
339 puggy 1.29 }
340    
341 azarah 1.96 test-flag-PROG() {
342     local comp=$1
343     local flags="$2"
344    
345     [[ -z ${comp} || -z ${flags} ]] && \
346     return 1
347    
348     local PROG=$(tc-get${comp})
349     ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
350     > /dev/null 2>&1
351     }
352    
353     # Returns true if C compiler support given flag
354     test-flag-CC() { test-flag-PROG "CC" "$1"; }
355    
356     # Returns true if C++ compiler support given flag
357     test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
358    
359 azarah 1.99 test-flags-PROG() {
360     local comp=$1
361     local flags
362 azarah 1.96 local x
363 azarah 1.99
364     shift
365    
366     [[ -z ${comp} ]] && \
367     return 1
368 swegener 1.101
369 azarah 1.96 for x in "$@" ; do
370 azarah 1.99 test-flag-${comp} "${x}" && flags="${flags} ${x}"
371 azarah 1.96 done
372    
373 azarah 1.99 echo "${flags}"
374 azarah 1.96
375 azarah 1.99 # Just bail if we dont have any flags
376     [[ -n ${flags} ]]
377 azarah 1.96 }
378    
379 azarah 1.99 # Returns (echo's) the given flags supported by the C compiler
380     test-flags-CC() { test-flags-PROG "CC" "$@"; }
381    
382     # Returns (echo's) the given flags supported by the C++ compiler
383     test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
384    
385     # Short-hand that should hopefully work for both C and C++ compiler, but
386 azarah 1.100 # its really only present due to the append-flags() abomination.
387 azarah 1.99 test-flags() { test-flags-CC "$@"; }
388    
389 kevquinn 1.105 # Depriciated, use test-flags()
390 vapier 1.36 test_flag() {
391 kevquinn 1.104 ewarn "test_flag: deprecated, please use test-flags()!" >&2
392 azarah 1.96
393 azarah 1.99 test-flags-CC "$@"
394 puggy 1.29 }
395    
396 agriffis 1.58 test_version_info() {
397 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
398 agriffis 1.58 return 0
399     else
400     return 1
401     fi
402     }
403    
404 puggy 1.29 strip-unsupported-flags() {
405 vapier 1.95 local x NEW_CFLAGS NEW_CXXFLAGS
406 agriffis 1.58
407 vapier 1.36 for x in ${CFLAGS} ; do
408 azarah 1.96 NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})"
409 puggy 1.29 done
410 vapier 1.36 for x in ${CXXFLAGS} ; do
411 azarah 1.96 NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})"
412 puggy 1.29 done
413    
414 vapier 1.95 export CFLAGS=${NEW_CFLAGS}
415     export CXXFLAGS=${NEW_CXXFLAGS}
416 azarah 1.8 }
417    
418 vapier 1.10 get-flag() {
419 agriffis 1.58 local f findflag="$1"
420    
421 vapier 1.36 # this code looks a little flaky but seems to work for
422     # everything we want ...
423     # for example, if CFLAGS="-march=i686":
424 agriffis 1.58 # `get-flag -march` == "-march=i686"
425     # `get-flag march` == "i686"
426 vapier 1.10 for f in ${CFLAGS} ${CXXFLAGS} ; do
427     if [ "${f/${findflag}}" != "${f}" ] ; then
428 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
429 vapier 1.28 return 0
430 vapier 1.10 fi
431     done
432 vapier 1.28 return 1
433 joker 1.16 }
434    
435 kevquinn 1.92 # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
436 solar 1.53 has_hardened() {
437 kevquinn 1.104 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
438 swegener 1.101
439 lv 1.69 test_version_info Hardened && return 0
440 azarah 1.96 # The specs file wont exist unless gcc has GCC_SPECS support
441     [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
442 solar 1.53 }
443    
444 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
445 solar 1.81 # indicate whether PIC is set
446 tseng 1.42 has_pic() {
447 kevquinn 1.104 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
448 swegener 1.101
449 azarah 1.96 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
450 kevquinn 1.105 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
451     gcc-specs-pie
452 tseng 1.42 }
453    
454 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
455 solar 1.81 # indicate whether PIE is set
456 mr_bones_ 1.83 has_pie() {
457 kevquinn 1.104 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
458 swegener 1.101
459 azarah 1.96 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
460 kevquinn 1.105 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
461     gcc-specs-pie
462 tseng 1.42 }
463 mr_bones_ 1.83
464 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
465 solar 1.86 # indicate whether code for SSP is being generated for all functions
466     has_ssp_all() {
467 kevquinn 1.104 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
468 swegener 1.101
469 solar 1.86 # note; this matches only -fstack-protector-all
470 azarah 1.96 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
471     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
472 kevquinn 1.105 gcc-specs-ssp-all
473 solar 1.86 }
474    
475 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
476 solar 1.81 # indicate whether code for SSP is being generated
477 tseng 1.42 has_ssp() {
478 kevquinn 1.104 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
479 swegener 1.101
480 solar 1.81 # note; this matches both -fstack-protector and -fstack-protector-all
481 azarah 1.96 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
482     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
483     gcc-specs-ssp
484 tseng 1.42 }
485    
486 lv 1.56 has_m64() {
487 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
488     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
489     # please dont replace this function with test_flag in some future
490     # clean-up!
491 swegener 1.101
492 vapier 1.72 local temp="$(emktemp)"
493 azarah 1.96 echo "int main() { return(0); }" > "${temp}".c
494 kugelfang 1.74 MY_CC=$(tc-getCC)
495 azarah 1.96 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
496 vapier 1.72 local ret=$?
497 azarah 1.96 rm -f "${temp}".c
498     [[ ${ret} != 1 ]] && return 0
499 lv 1.62 return 1
500 lv 1.56 }
501    
502     has_m32() {
503 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
504     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
505     # please dont replace this function with test_flag in some future
506     # clean-up!
507 eradicator 1.80
508     [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
509    
510 vapier 1.95 local temp=$(emktemp)
511     echo "int main() { return(0); }" > "${temp}".c
512 kugelfang 1.74 MY_CC=$(tc-getCC)
513 vapier 1.95 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
514 vapier 1.72 local ret=$?
515 vapier 1.95 rm -f "${temp}".c
516 azarah 1.96 [[ ${ret} != 1 ]] && return 0
517 lv 1.62 return 1
518 lv 1.56 }
519    
520 vapier 1.18 replace-sparc64-flags() {
521 fmccor 1.98 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
522 joker 1.16
523 mr_bones_ 1.83 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
524 agriffis 1.58 for x in ${SPARC64_CPUS}; do
525 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
526     done
527 mr_bones_ 1.83 else
528 agriffis 1.58 for x in ${SPARC64_CPUS}; do
529 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
530     done
531     fi
532 mr_bones_ 1.83
533     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
534 agriffis 1.58 for x in ${SPARC64_CPUS}; do
535 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
536     done
537     else
538 agriffis 1.58 for x in ${SPARC64_CPUS}; do
539 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
540     done
541     fi
542 vapier 1.59
543     export CFLAGS CXXFLAGS
544 solar 1.27 }
545    
546     append-ldflags() {
547 kevquinn 1.105 [[ -z $* ]] && return 0
548 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
549 vapier 1.28 return 0
550 solar 1.27 }
551    
552 kevquinn 1.105 # Remove flags from LDFLAGS - it's up to the ebuild to filter
553     # CFLAGS and CXXFLAGS via filter-flags if they need to.
554 solar 1.41 filter-ldflags() {
555 kevquinn 1.105 _filter-var LDFLAGS "$@"
556 solar 1.41 return 0
557     }
558    
559 kevquinn 1.105 # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
560     # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
561     # to gcc where it needs the '-Wl,'.
562 vapier 1.102 raw-ldflags() {
563     local x input="$@"
564     [[ -z ${input} ]] && input=${LDFLAGS}
565     set --
566     for x in ${input} ; do
567 vapier 1.103 x=${x#-Wl,}
568     set -- "$@" ${x//,/ }
569 vapier 1.102 done
570     echo "$@"
571     }
572    
573 vapier 1.73 # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
574     # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
575     # fixes.
576     #
577     # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
578     gcc2-flags() {
579 vapier 1.85 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
580     CFLAGS=${CFLAGS//-mtune=/-mcpu=}
581     CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
582 vapier 1.73 fi
583    
584 vapier 1.85 replace-cpu-flags k6-{2,3} k6
585     replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
586    
587     replace-cpu-flags pentium-mmx i586
588     replace-cpu-flags pentium{2,3,4} i686
589    
590     replace-cpu-flags ev6{7,8} ev6
591    
592 vapier 1.73 export CFLAGS CXXFLAGS
593     }
594 flameeyes 1.94
595     # Gets the flags needed for "NOW" binding
596     bindnow-flags() {
597     case $($(tc-getLD) -v 2>&1 </dev/null) in
598     *GNU* | *'with BFD'*) # GNU ld
599     echo "-Wl,-z,now" ;;
600     *Apple*) # Darwin ld
601     echo "-bind_at_load" ;;
602     *)
603     # Some linkers just recognize -V instead of -v
604     case $($(tc-getLD) -V 2>&1 </dev/null) in
605     *Solaris*) # Solaris accept almost the same GNU options
606     echo "-Wl,-z,now" ;;
607     esac
608     ;;
609     esac
610     }

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