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Revision 1.115 - (hide annotations) (download)
Fri Dec 29 21:30:38 2006 UTC (7 years, 3 months ago) by vapier
Branch: MAIN
Changes since 1.114: +2 -2 lines
allow all CPPFLAGS -D* in strip-flags #159402

1 vapier 1.108 # Copyright 1999-2006 Gentoo Foundation
2 verwilst 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.115 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.114 2006/12/27 00:52:12 vapier Exp $
4 vapier 1.108 #
5     # Maintainer: base-system@gentoo.org
6 vapier 1.63
7 vapier 1.72 # need access to emktemp()
8 eradicator 1.80 inherit eutils toolchain-funcs multilib
9 vapier 1.72
10 verwilst 1.2 #
11 vapier 1.18 #### filter-flags <flags> ####
12 verwilst 1.3 # Remove particular flags from C[XX]FLAGS
13 vapier 1.18 # Matches only complete flags
14 verwilst 1.2 #
15 vapier 1.18 #### append-flags <flags> ####
16 verwilst 1.3 # Add extra flags to your current C[XX]FLAGS
17     #
18 verwilst 1.4 #### replace-flags <orig.flag> <new.flag> ###
19 verwilst 1.3 # Replace a flag by another one
20     #
21 vapier 1.70 #### replace-cpu-flags <old.cpus> <new.cpu> ###
22 vapier 1.37 # Replace march/mcpu flags that specify <old.cpus>
23     # with flags that specify <new.cpu>
24     #
25 kevquinn 1.105 #### is-flag[q] <flag> ####
26 danarmak 1.7 # Returns "true" if flag is set in C[XX]FLAGS
27 vapier 1.18 # Matches only complete a flag
28 kevquinn 1.105 # 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
34 danarmak 1.7 #
35 azarah 1.8 #### strip-flags ####
36     # Strip C[XX]FLAGS of everything except known
37     # good options.
38     #
39 puggy 1.29 #### strip-unsupported-flags ####
40     # Strip C[XX]FLAGS of any flags not supported by
41     # installed version of gcc
42     #
43 vapier 1.10 #### get-flag <flag> ####
44     # Find and echo the value for a particular flag
45     #
46 joker 1.16 #### replace-sparc64-flags ####
47     # Sets mcpu to v8 and uses the original value
48     # as mtune if none specified.
49     #
50 vapier 1.26 #### 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 solar 1.27 #
55     #### append-ldflags ####
56     # Add extra flags to your current LDFLAGS
57     #
58 solar 1.41 #### filter-ldflags <flags> ####
59     # Remove particular flags from LDFLAGS
60     # Matches only complete flags
61     #
62 flameeyes 1.94 #### bindnow-flags ####
63     # Returns the flags to enable "now" binding in the current selected linker.
64 kevquinn 1.92 #
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 solar 1.86 #### 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     #
93 verwilst 1.3
94 azarah 1.17 # C[XX]FLAGS that we allow in strip-flags
95 vapier 1.36 setup-allowed-flags() {
96 vapier 1.84 if [[ -z ${ALLOWED_FLAGS} ]] ; then
97 vapier 1.76 export ALLOWED_FLAGS="-pipe"
98     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
99 vapier 1.87 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
100     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
101 kevquinn 1.105 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time"
102 vapier 1.76 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
103 vapier 1.107 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident"
104 vapier 1.44 fi
105 vapier 1.65 # allow a bunch of flags that negate features / control ABI
106     ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
107 vapier 1.87 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
108     -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
109     -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
110     -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
111 vapier 1.110 -mieee -mieee-with-inexact -mschedule \
112 vapier 1.91 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
113 vapier 1.87 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
114     -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
115 vapier 1.114 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \
116 vapier 1.115 -msecure-plt -D*"
117 vapier 1.36
118     # C[XX]FLAGS that we are think is ok, but needs testing
119     # NOTE: currently -Os have issues with gcc3 and K6* arch's
120 vapier 1.106 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
121 vapier 1.36 return 0
122 aliz 1.24 }
123 verwilst 1.13
124 kevquinn 1.105 # inverted filters for hardened compiler. This is trying to unpick
125     # the hardened compiler defaults.
126     _filter-hardened() {
127     local f
128     for f in "$@" ; do
129     case "${f}" in
130     # Ideally we should only concern ourselves with PIE flags,
131     # not -fPIC or -fpic, but too many places filter -fPIC without
132     # thinking about -fPIE.
133     -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
134     gcc-specs-pie || continue
135     is-flagq -nopie || append-flags -nopie;;
136     -fstack-protector)
137     gcc-specs-ssp || continue
138     is-flagq -fno-stack-protector || append-flags -fno-stack-protector;;
139     -fstack-protector-all)
140     gcc-specs-ssp-to-all || continue
141     is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;;
142 solar 1.27 esac
143     done
144 kevquinn 1.105 }
145    
146     # Remove occurrences of strings from variable given in $1
147     # Strings removed are matched as globs, so for example
148     # '-O*' would remove -O1, -O2 etc.
149     _filter-var() {
150     local f x VAR VAL
151     declare -a new
152 vapier 1.36
153 kevquinn 1.105 VAR=$1
154     shift
155     eval VAL=\${${VAR}}
156     for f in ${VAL}; do
157     for x in "$@"; do
158     # Note this should work with globs like -O*
159     [[ ${f} == ${x} ]] && continue 2
160 agriffis 1.61 done
161 kevquinn 1.105 eval new\[\${\#new\[@]}]=\${f}
162 verwilst 1.1 done
163 kevquinn 1.105 eval export ${VAR}=\${new\[*]}
164     }
165 agriffis 1.61
166 kevquinn 1.105 filter-flags() {
167     _filter-hardened "$@"
168     _filter-var CFLAGS "$@"
169     _filter-var CXXFLAGS "$@"
170 vapier 1.36 return 0
171 verwilst 1.2 }
172    
173 vapier 1.40 filter-lfs-flags() {
174 vapier 1.93 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
175 vapier 1.40 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
176     }
177    
178 vapier 1.48 append-lfs-flags() {
179 vapier 1.93 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
180 vapier 1.48 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
181     }
182    
183 vapier 1.18 append-flags() {
184 solar 1.82 [[ -z $* ]] && return 0
185 agriffis 1.58 export CFLAGS="${CFLAGS} $*"
186     export CXXFLAGS="${CXXFLAGS} $*"
187 vapier 1.28 return 0
188 verwilst 1.1 }
189    
190 vapier 1.18 replace-flags() {
191 vapier 1.93 [[ $# != 2 ]] \
192     && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
193     && die "replace-flags takes 2 arguments, not $#"
194    
195 mr_bones_ 1.83 local f fset
196 agriffis 1.64 declare -a new_CFLAGS new_CXXFLAGS
197    
198     for fset in CFLAGS CXXFLAGS; do
199     # Looping over the flags instead of using a global
200     # substitution ensures that we're working with flag atoms.
201     # Otherwise globs like -O* have the potential to wipe out the
202     # list of flags.
203     for f in ${!fset}; do
204     # Note this should work with globs like -O*
205     [[ ${f} == ${1} ]] && f=${2}
206     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
207     done
208     eval export ${fset}=\${new_${fset}\[*]}
209     done
210    
211 vapier 1.28 return 0
212 danarmak 1.7 }
213    
214 vapier 1.37 replace-cpu-flags() {
215 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
216     while [ $# -gt 1 ] ; do
217 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
218 vapier 1.113 # ${oldcpu}) prior to calling replace-flags
219 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
220     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
221     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
222     shift
223 vapier 1.37 done
224     return 0
225     }
226    
227 vapier 1.113 _is_flagq() {
228 kevquinn 1.105 local x
229 vapier 1.113 for x in ${!1} ; do
230     [[ ${x} == $2 ]] && return 0
231 kevquinn 1.105 done
232     return 1
233     }
234    
235 vapier 1.113 is-flagq() {
236     [[ -n $2 ]] && die "Usage: is-flag <flag>"
237     _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1
238     }
239    
240 danarmak 1.7 is-flag() {
241 vapier 1.113 is-flagq "$@" && echo true
242 kevquinn 1.105 }
243    
244     is-ldflagq() {
245 vapier 1.113 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
246     _is_flagq LDFLAGS $1
247 verwilst 1.1 }
248 azarah 1.8
249 kevquinn 1.105 is-ldflag() {
250 vapier 1.113 is-ldflagq "$@" && echo true
251 kevquinn 1.105 }
252    
253 vapier 1.36 filter-mfpmath() {
254 agriffis 1.58 local orig_mfpmath new_math prune_math
255    
256 vapier 1.36 # save the original -mfpmath flag
257 vapier 1.109 orig_mfpmath=$(get-flag -mfpmath)
258 vapier 1.36 # get the value of the current -mfpmath flag
259 vapier 1.109 new_math=$(get-flag mfpmath)
260     new_math=" ${new_math//,/ } "
261 vapier 1.36 # figure out which math values are to be removed
262 agriffis 1.58 prune_math=""
263 vapier 1.36 for prune_math in "$@" ; do
264 vapier 1.109 new_math=${new_math/ ${prune_math} / }
265 vapier 1.36 done
266 vapier 1.109 new_math=$(echo ${new_math})
267     new_math=${new_math// /,}
268 vapier 1.36
269 vapier 1.109 if [[ -z ${new_math} ]] ; then
270 vapier 1.36 # if we're removing all user specified math values are
271     # slated for removal, then we just filter the flag
272     filter-flags ${orig_mfpmath}
273     else
274     # if we only want to filter some of the user specified
275     # math values, then we replace the current flag
276     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
277     fi
278     return 0
279     }
280    
281 azarah 1.8 strip-flags() {
282 agriffis 1.58 local x y flag NEW_CFLAGS NEW_CXXFLAGS
283    
284 vapier 1.36 setup-allowed-flags
285    
286 azarah 1.8 local NEW_CFLAGS=""
287     local NEW_CXXFLAGS=""
288    
289 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
290 vapier 1.84 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
291 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
292     fi
293    
294 agriffis 1.58 set -f # disable pathname expansion
295 azarah 1.8
296 agriffis 1.58 for x in ${CFLAGS}; do
297     for y in ${ALLOWED_FLAGS}; do
298 lostlogic 1.14 flag=${x%%=*}
299 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
300 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
301     break
302 azarah 1.8 fi
303     done
304     done
305    
306 agriffis 1.58 for x in ${CXXFLAGS}; 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_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
311     break
312 azarah 1.8 fi
313     done
314     done
315 azarah 1.30
316     # In case we filtered out all optimization flags fallback to -O2
317     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
318     NEW_CFLAGS="${NEW_CFLAGS} -O2"
319     fi
320     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
321     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
322     fi
323 azarah 1.8
324 agriffis 1.58 set +f # re-enable pathname expansion
325 azarah 1.8
326     export CFLAGS="${NEW_CFLAGS}"
327     export CXXFLAGS="${NEW_CXXFLAGS}"
328 vapier 1.36 return 0
329 puggy 1.29 }
330    
331 azarah 1.96 test-flag-PROG() {
332     local comp=$1
333     local flags="$2"
334    
335     [[ -z ${comp} || -z ${flags} ]] && \
336     return 1
337    
338     local PROG=$(tc-get${comp})
339     ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
340     > /dev/null 2>&1
341     }
342    
343     # Returns true if C compiler support given flag
344     test-flag-CC() { test-flag-PROG "CC" "$1"; }
345    
346     # Returns true if C++ compiler support given flag
347     test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
348    
349 azarah 1.99 test-flags-PROG() {
350     local comp=$1
351     local flags
352 azarah 1.96 local x
353 azarah 1.99
354     shift
355    
356 vapier 1.113 [[ -z ${comp} ]] && return 1
357 swegener 1.101
358 vapier 1.113 x=""
359 azarah 1.96 for x in "$@" ; do
360 vapier 1.113 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
361 azarah 1.96 done
362    
363 azarah 1.99 echo "${flags}"
364 azarah 1.96
365 azarah 1.99 # Just bail if we dont have any flags
366     [[ -n ${flags} ]]
367 azarah 1.96 }
368    
369 azarah 1.99 # Returns (echo's) the given flags supported by the C compiler
370     test-flags-CC() { test-flags-PROG "CC" "$@"; }
371    
372     # Returns (echo's) the given flags supported by the C++ compiler
373     test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
374    
375     # Short-hand that should hopefully work for both C and C++ compiler, but
376 azarah 1.100 # its really only present due to the append-flags() abomination.
377 azarah 1.99 test-flags() { test-flags-CC "$@"; }
378    
379 kevquinn 1.105 # Depriciated, use test-flags()
380 vapier 1.36 test_flag() {
381 kevquinn 1.104 ewarn "test_flag: deprecated, please use test-flags()!" >&2
382 azarah 1.96
383 azarah 1.99 test-flags-CC "$@"
384 puggy 1.29 }
385    
386 agriffis 1.58 test_version_info() {
387 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
388 agriffis 1.58 return 0
389     else
390     return 1
391     fi
392     }
393    
394 puggy 1.29 strip-unsupported-flags() {
395 vapier 1.113 export CFLAGS=$(test-flags-CC ${CFLAGS})
396     export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
397 azarah 1.8 }
398    
399 vapier 1.10 get-flag() {
400 agriffis 1.58 local f findflag="$1"
401    
402 vapier 1.36 # this code looks a little flaky but seems to work for
403     # everything we want ...
404     # for example, if CFLAGS="-march=i686":
405 agriffis 1.58 # `get-flag -march` == "-march=i686"
406     # `get-flag march` == "i686"
407 vapier 1.10 for f in ${CFLAGS} ${CXXFLAGS} ; do
408     if [ "${f/${findflag}}" != "${f}" ] ; then
409 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
410 vapier 1.28 return 0
411 vapier 1.10 fi
412     done
413 vapier 1.28 return 1
414 joker 1.16 }
415    
416 kevquinn 1.92 # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
417 solar 1.53 has_hardened() {
418 kevquinn 1.104 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
419 swegener 1.101
420 lv 1.69 test_version_info Hardened && return 0
421 azarah 1.96 # The specs file wont exist unless gcc has GCC_SPECS support
422     [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
423 solar 1.53 }
424    
425 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
426 solar 1.81 # indicate whether PIC is set
427 tseng 1.42 has_pic() {
428 kevquinn 1.104 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
429 swegener 1.101
430 azarah 1.96 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
431 kevquinn 1.105 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
432     gcc-specs-pie
433 tseng 1.42 }
434    
435 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
436 solar 1.81 # indicate whether PIE is set
437 mr_bones_ 1.83 has_pie() {
438 kevquinn 1.104 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
439 swegener 1.101
440 azarah 1.96 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
441 kevquinn 1.105 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
442     gcc-specs-pie
443 tseng 1.42 }
444 mr_bones_ 1.83
445 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
446 solar 1.86 # indicate whether code for SSP is being generated for all functions
447     has_ssp_all() {
448 kevquinn 1.104 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
449 swegener 1.101
450 solar 1.86 # note; this matches only -fstack-protector-all
451 azarah 1.96 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
452     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
453 kevquinn 1.105 gcc-specs-ssp-all
454 solar 1.86 }
455    
456 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
457 solar 1.81 # indicate whether code for SSP is being generated
458 tseng 1.42 has_ssp() {
459 kevquinn 1.104 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
460 swegener 1.101
461 solar 1.81 # note; this matches both -fstack-protector and -fstack-protector-all
462 azarah 1.96 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
463     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
464     gcc-specs-ssp
465 tseng 1.42 }
466    
467 lv 1.56 has_m64() {
468 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
469     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
470     # please dont replace this function with test_flag in some future
471     # clean-up!
472 swegener 1.101
473 vapier 1.72 local temp="$(emktemp)"
474 azarah 1.96 echo "int main() { return(0); }" > "${temp}".c
475 kugelfang 1.74 MY_CC=$(tc-getCC)
476 azarah 1.96 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
477 vapier 1.72 local ret=$?
478 azarah 1.96 rm -f "${temp}".c
479     [[ ${ret} != 1 ]] && return 0
480 lv 1.62 return 1
481 lv 1.56 }
482    
483     has_m32() {
484 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
485     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
486     # please dont replace this function with test_flag in some future
487     # clean-up!
488 eradicator 1.80
489     [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
490    
491 vapier 1.95 local temp=$(emktemp)
492     echo "int main() { return(0); }" > "${temp}".c
493 kugelfang 1.74 MY_CC=$(tc-getCC)
494 vapier 1.95 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
495 vapier 1.72 local ret=$?
496 vapier 1.95 rm -f "${temp}".c
497 azarah 1.96 [[ ${ret} != 1 ]] && return 0
498 lv 1.62 return 1
499 lv 1.56 }
500    
501 vapier 1.18 replace-sparc64-flags() {
502 fmccor 1.98 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
503 joker 1.16
504 mr_bones_ 1.83 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
505 agriffis 1.58 for x in ${SPARC64_CPUS}; do
506 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
507     done
508 mr_bones_ 1.83 else
509 swegener 1.111 for x in ${SPARC64_CPUS}; do
510 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
511     done
512     fi
513 mr_bones_ 1.83
514     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
515 agriffis 1.58 for x in ${SPARC64_CPUS}; do
516 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
517     done
518     else
519 swegener 1.111 for x in ${SPARC64_CPUS}; do
520 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
521     done
522     fi
523 vapier 1.59
524     export CFLAGS CXXFLAGS
525 solar 1.27 }
526    
527     append-ldflags() {
528 kevquinn 1.105 [[ -z $* ]] && return 0
529 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
530 vapier 1.28 return 0
531 solar 1.27 }
532    
533 kevquinn 1.105 # Remove flags from LDFLAGS - it's up to the ebuild to filter
534     # CFLAGS and CXXFLAGS via filter-flags if they need to.
535 solar 1.41 filter-ldflags() {
536 kevquinn 1.105 _filter-var LDFLAGS "$@"
537 solar 1.41 return 0
538     }
539    
540 kevquinn 1.105 # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
541     # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
542     # to gcc where it needs the '-Wl,'.
543 vapier 1.102 raw-ldflags() {
544     local x input="$@"
545     [[ -z ${input} ]] && input=${LDFLAGS}
546     set --
547     for x in ${input} ; do
548 vapier 1.103 x=${x#-Wl,}
549     set -- "$@" ${x//,/ }
550 vapier 1.102 done
551     echo "$@"
552     }
553    
554 flameeyes 1.94 # Gets the flags needed for "NOW" binding
555     bindnow-flags() {
556     case $($(tc-getLD) -v 2>&1 </dev/null) in
557     *GNU* | *'with BFD'*) # GNU ld
558     echo "-Wl,-z,now" ;;
559     *Apple*) # Darwin ld
560     echo "-bind_at_load" ;;
561     *)
562     # Some linkers just recognize -V instead of -v
563     case $($(tc-getLD) -V 2>&1 </dev/null) in
564     *Solaris*) # Solaris accept almost the same GNU options
565     echo "-Wl,-z,now" ;;
566     esac
567     ;;
568     esac
569     }
570 vapier 1.113
571    
572     # Some tests for when we screw with things and want to make
573     # sure we didn't break anything
574     #TESTS() {
575     # CFLAGS="-a -b -c=1"
576     # CXXFLAGS="-x -y -z=2"
577     # LDFLAGS="-l -m -n=3"
578     #
579     # die() { exit 1; }
580     # (is-flag 1 2 3) && die
581     # (is-ldflag 1 2 3) && die
582     #
583     # is-flagq -l && die
584     # is-ldflagq -a && die
585     # is-flagq -a || die
586     # is-flagq -x || die
587     # is-ldflagq -n=* || die
588     # is-ldflagq -n && die
589     #
590     # strip-unsupported-flags
591     # [[ ${CFLAGS} == "-c=1" ]] || die
592     # [[ ${CXXFLAGS} == "-y -z=2" ]] || die
593     #
594     # echo "All tests pass"
595     #}
596     #TESTS

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