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Revision 1.105 - (hide annotations) (download)
Sun Jan 22 17:51:27 2006 UTC (8 years, 7 months ago) by kevquinn
Branch: MAIN
Changes since 1.104: +91 -65 lines
Reworked filter-flags to be more consistent; factored out common code
to _filter-var()

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 kevquinn 1.105 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.104 2006/01/14 10:52:12 kevquinn 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 1.44 fi
103 vapier 1.65 # allow a bunch of flags that negate features / control ABI
104     ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
105 vapier 1.87 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
106     -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
107     -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
108     -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
109 agriffis 1.90 -mieee -mieee-with-inexact \
110 vapier 1.91 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
111 vapier 1.87 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
112     -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
113     -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias"
114 vapier 1.36
115     # C[XX]FLAGS that we are think is ok, but needs testing
116     # NOTE: currently -Os have issues with gcc3 and K6* arch's
117     export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
118     return 0
119 aliz 1.24 }
120 verwilst 1.13
121 kevquinn 1.105 # inverted filters for hardened compiler. This is trying to unpick
122     # the hardened compiler defaults.
123     _filter-hardened() {
124     local f
125     for f in "$@" ; do
126     case "${f}" in
127     # Ideally we should only concern ourselves with PIE flags,
128     # not -fPIC or -fpic, but too many places filter -fPIC without
129     # thinking about -fPIE.
130     -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
131     gcc-specs-pie || continue
132     is-flagq -nopie || append-flags -nopie;;
133     -fstack-protector)
134     gcc-specs-ssp || continue
135     is-flagq -fno-stack-protector || append-flags -fno-stack-protector;;
136     -fstack-protector-all)
137     gcc-specs-ssp-to-all || continue
138     is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;;
139 solar 1.27 esac
140     done
141 kevquinn 1.105 }
142    
143     # Remove occurrences of strings from variable given in $1
144     # Strings removed are matched as globs, so for example
145     # '-O*' would remove -O1, -O2 etc.
146     _filter-var() {
147     local f x VAR VAL
148     declare -a new
149 vapier 1.36
150 kevquinn 1.105 VAR=$1
151     shift
152     eval VAL=\${${VAR}}
153     for f in ${VAL}; do
154     for x in "$@"; do
155     # Note this should work with globs like -O*
156     [[ ${f} == ${x} ]] && continue 2
157 agriffis 1.61 done
158 kevquinn 1.105 eval new\[\${\#new\[@]}]=\${f}
159 verwilst 1.1 done
160 kevquinn 1.105 eval export ${VAR}=\${new\[*]}
161     }
162 agriffis 1.61
163 kevquinn 1.105 filter-flags() {
164     _filter-hardened "$@"
165     _filter-var CFLAGS "$@"
166     _filter-var CXXFLAGS "$@"
167 vapier 1.36 return 0
168 verwilst 1.2 }
169    
170 vapier 1.40 filter-lfs-flags() {
171 vapier 1.93 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
172 vapier 1.40 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
173     }
174    
175 vapier 1.48 append-lfs-flags() {
176 vapier 1.93 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
177 vapier 1.48 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
178     }
179    
180 vapier 1.18 append-flags() {
181 solar 1.82 [[ -z $* ]] && return 0
182 agriffis 1.58 export CFLAGS="${CFLAGS} $*"
183     export CXXFLAGS="${CXXFLAGS} $*"
184 vapier 1.28 return 0
185 verwilst 1.1 }
186    
187 vapier 1.18 replace-flags() {
188 vapier 1.93 [[ $# != 2 ]] \
189     && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
190     && die "replace-flags takes 2 arguments, not $#"
191    
192 mr_bones_ 1.83 local f fset
193 agriffis 1.64 declare -a new_CFLAGS new_CXXFLAGS
194    
195     for fset in CFLAGS CXXFLAGS; do
196     # Looping over the flags instead of using a global
197     # substitution ensures that we're working with flag atoms.
198     # Otherwise globs like -O* have the potential to wipe out the
199     # list of flags.
200     for f in ${!fset}; do
201     # Note this should work with globs like -O*
202     [[ ${f} == ${1} ]] && f=${2}
203     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
204     done
205     eval export ${fset}=\${new_${fset}\[*]}
206     done
207    
208 vapier 1.28 return 0
209 danarmak 1.7 }
210    
211 vapier 1.37 replace-cpu-flags() {
212 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
213     while [ $# -gt 1 ] ; do
214 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
215     # ${oldcpu} prior to calling replace-flags
216 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
217     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
218     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
219     shift
220 vapier 1.37 done
221     return 0
222     }
223    
224 kevquinn 1.105 is-flagq() {
225     local x
226    
227     for x in ${CFLAGS} ${CXXFLAGS} ; do
228     # Note this should work with globs like -mcpu=ultrasparc*
229     if [[ ${x} == ${1} ]]; then
230     return 0
231     fi
232     done
233     return 1
234     }
235    
236 danarmak 1.7 is-flag() {
237 kevquinn 1.105 if is-flagq ${1}; then
238     echo true
239     return 0
240     fi
241     return 1
242     }
243    
244     is-ldflagq() {
245 agriffis 1.58 local x
246    
247 kevquinn 1.105 for x in ${LDFLAGS} ; do
248 agriffis 1.67 # Note this should work with globs like -mcpu=ultrasparc*
249     if [[ ${x} == ${1} ]]; then
250 vapier 1.18 return 0
251     fi
252 danarmak 1.7 done
253 vapier 1.18 return 1
254 verwilst 1.1 }
255 azarah 1.8
256 kevquinn 1.105 is-ldflag() {
257     if is-ldflagq ${1}; then
258     echo true
259     return 0
260     fi
261     return 1
262     }
263    
264 vapier 1.36 filter-mfpmath() {
265 agriffis 1.58 local orig_mfpmath new_math prune_math
266    
267 vapier 1.36 # save the original -mfpmath flag
268 agriffis 1.58 orig_mfpmath="`get-flag -mfpmath`"
269 vapier 1.36 # get the value of the current -mfpmath flag
270 agriffis 1.58 new_math=" `get-flag mfpmath | tr , ' '` "
271 vapier 1.36 # figure out which math values are to be removed
272 agriffis 1.58 prune_math=""
273 vapier 1.36 for prune_math in "$@" ; do
274     new_math="${new_math/ ${prune_math} / }"
275     done
276     new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
277    
278     if [ -z "${new_math}" ] ; then
279     # if we're removing all user specified math values are
280     # slated for removal, then we just filter the flag
281     filter-flags ${orig_mfpmath}
282     else
283     # if we only want to filter some of the user specified
284     # math values, then we replace the current flag
285     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
286     fi
287     return 0
288     }
289    
290 azarah 1.8 strip-flags() {
291 agriffis 1.58 local x y flag NEW_CFLAGS NEW_CXXFLAGS
292    
293 vapier 1.36 setup-allowed-flags
294    
295 azarah 1.8 local NEW_CFLAGS=""
296     local NEW_CXXFLAGS=""
297    
298 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
299 vapier 1.84 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
300 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
301     fi
302    
303 agriffis 1.58 set -f # disable pathname expansion
304 azarah 1.8
305 agriffis 1.58 for x in ${CFLAGS}; do
306     for y in ${ALLOWED_FLAGS}; do
307 lostlogic 1.14 flag=${x%%=*}
308 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
309 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
310     break
311 azarah 1.8 fi
312     done
313     done
314    
315 agriffis 1.58 for x in ${CXXFLAGS}; do
316     for y in ${ALLOWED_FLAGS}; do
317 lostlogic 1.14 flag=${x%%=*}
318 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
319 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
320     break
321 azarah 1.8 fi
322     done
323     done
324 azarah 1.30
325     # In case we filtered out all optimization flags fallback to -O2
326     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
327     NEW_CFLAGS="${NEW_CFLAGS} -O2"
328     fi
329     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
330     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
331     fi
332 azarah 1.8
333 agriffis 1.58 set +f # re-enable pathname expansion
334 azarah 1.8
335     export CFLAGS="${NEW_CFLAGS}"
336     export CXXFLAGS="${NEW_CXXFLAGS}"
337 vapier 1.36 return 0
338 puggy 1.29 }
339    
340 azarah 1.96 test-flag-PROG() {
341     local comp=$1
342     local flags="$2"
343    
344     [[ -z ${comp} || -z ${flags} ]] && \
345     return 1
346    
347     local PROG=$(tc-get${comp})
348     ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
349     > /dev/null 2>&1
350     }
351    
352     # Returns true if C compiler support given flag
353     test-flag-CC() { test-flag-PROG "CC" "$1"; }
354    
355     # Returns true if C++ compiler support given flag
356     test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
357    
358 azarah 1.99 test-flags-PROG() {
359     local comp=$1
360     local flags
361 azarah 1.96 local x
362 azarah 1.99
363     shift
364    
365     [[ -z ${comp} ]] && \
366     return 1
367 swegener 1.101
368 azarah 1.96 for x in "$@" ; do
369 azarah 1.99 test-flag-${comp} "${x}" && flags="${flags} ${x}"
370 azarah 1.96 done
371    
372 azarah 1.99 echo "${flags}"
373 azarah 1.96
374 azarah 1.99 # Just bail if we dont have any flags
375     [[ -n ${flags} ]]
376 azarah 1.96 }
377    
378 azarah 1.99 # Returns (echo's) the given flags supported by the C compiler
379     test-flags-CC() { test-flags-PROG "CC" "$@"; }
380    
381     # Returns (echo's) the given flags supported by the C++ compiler
382     test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
383    
384     # Short-hand that should hopefully work for both C and C++ compiler, but
385 azarah 1.100 # its really only present due to the append-flags() abomination.
386 azarah 1.99 test-flags() { test-flags-CC "$@"; }
387    
388 kevquinn 1.105 # Depriciated, use test-flags()
389 vapier 1.36 test_flag() {
390 kevquinn 1.104 ewarn "test_flag: deprecated, please use test-flags()!" >&2
391 azarah 1.96
392 azarah 1.99 test-flags-CC "$@"
393 puggy 1.29 }
394    
395 agriffis 1.58 test_version_info() {
396 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
397 agriffis 1.58 return 0
398     else
399     return 1
400     fi
401     }
402    
403 puggy 1.29 strip-unsupported-flags() {
404 vapier 1.95 local x NEW_CFLAGS NEW_CXXFLAGS
405 agriffis 1.58
406 vapier 1.36 for x in ${CFLAGS} ; do
407 azarah 1.96 NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})"
408 puggy 1.29 done
409 vapier 1.36 for x in ${CXXFLAGS} ; do
410 azarah 1.96 NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})"
411 puggy 1.29 done
412    
413 vapier 1.95 export CFLAGS=${NEW_CFLAGS}
414     export CXXFLAGS=${NEW_CXXFLAGS}
415 azarah 1.8 }
416    
417 vapier 1.10 get-flag() {
418 agriffis 1.58 local f findflag="$1"
419    
420 vapier 1.36 # this code looks a little flaky but seems to work for
421     # everything we want ...
422     # for example, if CFLAGS="-march=i686":
423 agriffis 1.58 # `get-flag -march` == "-march=i686"
424     # `get-flag march` == "i686"
425 vapier 1.10 for f in ${CFLAGS} ${CXXFLAGS} ; do
426     if [ "${f/${findflag}}" != "${f}" ] ; then
427 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
428 vapier 1.28 return 0
429 vapier 1.10 fi
430     done
431 vapier 1.28 return 1
432 joker 1.16 }
433    
434 kevquinn 1.92 # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
435 solar 1.53 has_hardened() {
436 kevquinn 1.104 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
437 swegener 1.101
438 lv 1.69 test_version_info Hardened && return 0
439 azarah 1.96 # The specs file wont exist unless gcc has GCC_SPECS support
440     [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
441 solar 1.53 }
442    
443 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
444 solar 1.81 # indicate whether PIC is set
445 tseng 1.42 has_pic() {
446 kevquinn 1.104 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
447 swegener 1.101
448 azarah 1.96 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
449 kevquinn 1.105 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
450     gcc-specs-pie
451 tseng 1.42 }
452    
453 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
454 solar 1.81 # indicate whether PIE is set
455 mr_bones_ 1.83 has_pie() {
456 kevquinn 1.104 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
457 swegener 1.101
458 azarah 1.96 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
459 kevquinn 1.105 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
460     gcc-specs-pie
461 tseng 1.42 }
462 mr_bones_ 1.83
463 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
464 solar 1.86 # indicate whether code for SSP is being generated for all functions
465     has_ssp_all() {
466 kevquinn 1.104 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
467 swegener 1.101
468 solar 1.86 # note; this matches only -fstack-protector-all
469 azarah 1.96 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
470     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
471 kevquinn 1.105 gcc-specs-ssp-all
472 solar 1.86 }
473    
474 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
475 solar 1.81 # indicate whether code for SSP is being generated
476 tseng 1.42 has_ssp() {
477 kevquinn 1.104 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
478 swegener 1.101
479 solar 1.81 # note; this matches both -fstack-protector and -fstack-protector-all
480 azarah 1.96 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
481     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
482     gcc-specs-ssp
483 tseng 1.42 }
484    
485 lv 1.56 has_m64() {
486 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
487     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
488     # please dont replace this function with test_flag in some future
489     # clean-up!
490 swegener 1.101
491 vapier 1.72 local temp="$(emktemp)"
492 azarah 1.96 echo "int main() { return(0); }" > "${temp}".c
493 kugelfang 1.74 MY_CC=$(tc-getCC)
494 azarah 1.96 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
495 vapier 1.72 local ret=$?
496 azarah 1.96 rm -f "${temp}".c
497     [[ ${ret} != 1 ]] && return 0
498 lv 1.62 return 1
499 lv 1.56 }
500    
501     has_m32() {
502 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
503     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
504     # please dont replace this function with test_flag in some future
505     # clean-up!
506 eradicator 1.80
507     [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
508    
509 vapier 1.95 local temp=$(emktemp)
510     echo "int main() { return(0); }" > "${temp}".c
511 kugelfang 1.74 MY_CC=$(tc-getCC)
512 vapier 1.95 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
513 vapier 1.72 local ret=$?
514 vapier 1.95 rm -f "${temp}".c
515 azarah 1.96 [[ ${ret} != 1 ]] && return 0
516 lv 1.62 return 1
517 lv 1.56 }
518    
519 vapier 1.18 replace-sparc64-flags() {
520 fmccor 1.98 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
521 joker 1.16
522 mr_bones_ 1.83 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
523 agriffis 1.58 for x in ${SPARC64_CPUS}; do
524 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
525     done
526 mr_bones_ 1.83 else
527 agriffis 1.58 for x in ${SPARC64_CPUS}; do
528 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
529     done
530     fi
531 mr_bones_ 1.83
532     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
533 agriffis 1.58 for x in ${SPARC64_CPUS}; do
534 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
535     done
536     else
537 agriffis 1.58 for x in ${SPARC64_CPUS}; do
538 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
539     done
540     fi
541 vapier 1.59
542     export CFLAGS CXXFLAGS
543 solar 1.27 }
544    
545     append-ldflags() {
546 kevquinn 1.105 [[ -z $* ]] && return 0
547 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
548 vapier 1.28 return 0
549 solar 1.27 }
550    
551 kevquinn 1.105 # Remove flags from LDFLAGS - it's up to the ebuild to filter
552     # CFLAGS and CXXFLAGS via filter-flags if they need to.
553 solar 1.41 filter-ldflags() {
554 kevquinn 1.105 _filter-var LDFLAGS "$@"
555 solar 1.41 return 0
556     }
557    
558 kevquinn 1.105 # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
559     # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
560     # to gcc where it needs the '-Wl,'.
561 vapier 1.102 raw-ldflags() {
562     local x input="$@"
563     [[ -z ${input} ]] && input=${LDFLAGS}
564     set --
565     for x in ${input} ; do
566 vapier 1.103 x=${x#-Wl,}
567     set -- "$@" ${x//,/ }
568 vapier 1.102 done
569     echo "$@"
570     }
571    
572 vapier 1.73 # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
573     # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
574     # fixes.
575     #
576     # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
577     gcc2-flags() {
578 vapier 1.85 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
579     CFLAGS=${CFLAGS//-mtune=/-mcpu=}
580     CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
581 vapier 1.73 fi
582    
583 vapier 1.85 replace-cpu-flags k6-{2,3} k6
584     replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
585    
586     replace-cpu-flags pentium-mmx i586
587     replace-cpu-flags pentium{2,3,4} i686
588    
589     replace-cpu-flags ev6{7,8} ev6
590    
591 vapier 1.73 export CFLAGS CXXFLAGS
592     }
593 flameeyes 1.94
594     # Gets the flags needed for "NOW" binding
595     bindnow-flags() {
596     case $($(tc-getLD) -v 2>&1 </dev/null) in
597     *GNU* | *'with BFD'*) # GNU ld
598     echo "-Wl,-z,now" ;;
599     *Apple*) # Darwin ld
600     echo "-bind_at_load" ;;
601     *)
602     # Some linkers just recognize -V instead of -v
603     case $($(tc-getLD) -V 2>&1 </dev/null) in
604     *Solaris*) # Solaris accept almost the same GNU options
605     echo "-Wl,-z,now" ;;
606     esac
607     ;;
608     esac
609     }

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