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Revision 1.118 - (hide annotations) (download)
Sat Mar 24 07:07:18 2007 UTC (7 years, 5 months ago) by vapier
Branch: MAIN
Changes since 1.117: +9 -2 lines
add new function append-cppflags and support CPPFLAGS a little better

1 vapier 1.116 # Copyright 1999-2007 Gentoo Foundation
2 verwilst 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.118 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.117 2007/03/04 21:13:17 vapier Exp $
4 vapier 1.108 #
5 vapier 1.116 # Maintainer: toolchain@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 1.117 # Note: shell globs and character lists are allowed
96 vapier 1.36 setup-allowed-flags() {
97 vapier 1.84 if [[ -z ${ALLOWED_FLAGS} ]] ; then
98 vapier 1.76 export ALLOWED_FLAGS="-pipe"
99     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
100 vapier 1.87 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
101     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
102 kevquinn 1.105 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time"
103 vapier 1.117 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+"
104 vapier 1.107 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident"
105 vapier 1.44 fi
106 vapier 1.65 # allow a bunch of flags that negate features / control ABI
107     ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
108 vapier 1.87 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
109     -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
110     -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
111     -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
112 vapier 1.110 -mieee -mieee-with-inexact -mschedule \
113 vapier 1.91 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
114 vapier 1.87 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
115     -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
116 vapier 1.114 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \
117 vapier 1.115 -msecure-plt -D*"
118 vapier 1.36
119     # C[XX]FLAGS that we are think is ok, but needs testing
120     # NOTE: currently -Os have issues with gcc3 and K6* arch's
121 vapier 1.106 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
122 vapier 1.36 return 0
123 aliz 1.24 }
124 verwilst 1.13
125 kevquinn 1.105 # inverted filters for hardened compiler. This is trying to unpick
126     # the hardened compiler defaults.
127     _filter-hardened() {
128     local f
129     for f in "$@" ; 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 solar 1.27 esac
144     done
145 kevquinn 1.105 }
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 vapier 1.36
154 kevquinn 1.105 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 agriffis 1.61 done
162 kevquinn 1.105 eval new\[\${\#new\[@]}]=\${f}
163 verwilst 1.1 done
164 kevquinn 1.105 eval export ${VAR}=\${new\[*]}
165     }
166 agriffis 1.61
167 kevquinn 1.105 filter-flags() {
168     _filter-hardened "$@"
169     _filter-var CFLAGS "$@"
170 vapier 1.118 _filter-var CPPFLAGS "$@"
171 kevquinn 1.105 _filter-var CXXFLAGS "$@"
172 vapier 1.36 return 0
173 verwilst 1.2 }
174    
175 vapier 1.40 filter-lfs-flags() {
176 vapier 1.93 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
177 vapier 1.40 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
178     }
179    
180 vapier 1.118 append-cppflags() {
181     [[ -z $* ]] && return 0
182     export CPPFLAGS="${CPPFLAGS} $*"
183     return 0
184     }
185    
186 vapier 1.48 append-lfs-flags() {
187 vapier 1.93 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
188 vapier 1.118 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
189 vapier 1.48 }
190    
191 vapier 1.18 append-flags() {
192 solar 1.82 [[ -z $* ]] && return 0
193 agriffis 1.58 export CFLAGS="${CFLAGS} $*"
194     export CXXFLAGS="${CXXFLAGS} $*"
195 vapier 1.28 return 0
196 verwilst 1.1 }
197    
198 vapier 1.18 replace-flags() {
199 vapier 1.93 [[ $# != 2 ]] \
200     && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
201     && die "replace-flags takes 2 arguments, not $#"
202    
203 mr_bones_ 1.83 local f fset
204 agriffis 1.64 declare -a new_CFLAGS new_CXXFLAGS
205    
206     for fset in CFLAGS CXXFLAGS; do
207     # Looping over the flags instead of using a global
208     # substitution ensures that we're working with flag atoms.
209     # Otherwise globs like -O* have the potential to wipe out the
210     # list of flags.
211     for f in ${!fset}; do
212     # Note this should work with globs like -O*
213     [[ ${f} == ${1} ]] && f=${2}
214     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
215     done
216     eval export ${fset}=\${new_${fset}\[*]}
217     done
218    
219 vapier 1.28 return 0
220 danarmak 1.7 }
221    
222 vapier 1.37 replace-cpu-flags() {
223 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
224     while [ $# -gt 1 ] ; do
225 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
226 vapier 1.113 # ${oldcpu}) prior to calling replace-flags
227 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
228     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
229     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
230     shift
231 vapier 1.37 done
232     return 0
233     }
234    
235 vapier 1.113 _is_flagq() {
236 kevquinn 1.105 local x
237 vapier 1.113 for x in ${!1} ; do
238     [[ ${x} == $2 ]] && return 0
239 kevquinn 1.105 done
240     return 1
241     }
242    
243 vapier 1.113 is-flagq() {
244     [[ -n $2 ]] && die "Usage: is-flag <flag>"
245     _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1
246     }
247    
248 danarmak 1.7 is-flag() {
249 vapier 1.113 is-flagq "$@" && echo true
250 kevquinn 1.105 }
251    
252     is-ldflagq() {
253 vapier 1.113 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
254     _is_flagq LDFLAGS $1
255 verwilst 1.1 }
256 azarah 1.8
257 kevquinn 1.105 is-ldflag() {
258 vapier 1.113 is-ldflagq "$@" && echo true
259 kevquinn 1.105 }
260    
261 vapier 1.36 filter-mfpmath() {
262 agriffis 1.58 local orig_mfpmath new_math prune_math
263    
264 vapier 1.36 # save the original -mfpmath flag
265 vapier 1.109 orig_mfpmath=$(get-flag -mfpmath)
266 vapier 1.36 # get the value of the current -mfpmath flag
267 vapier 1.109 new_math=$(get-flag mfpmath)
268     new_math=" ${new_math//,/ } "
269 vapier 1.36 # figure out which math values are to be removed
270 agriffis 1.58 prune_math=""
271 vapier 1.36 for prune_math in "$@" ; do
272 vapier 1.109 new_math=${new_math/ ${prune_math} / }
273 vapier 1.36 done
274 vapier 1.109 new_math=$(echo ${new_math})
275     new_math=${new_math// /,}
276 vapier 1.36
277 vapier 1.109 if [[ -z ${new_math} ]] ; then
278 vapier 1.36 # if we're removing all user specified math values are
279     # slated for removal, then we just filter the flag
280     filter-flags ${orig_mfpmath}
281     else
282     # if we only want to filter some of the user specified
283     # math values, then we replace the current flag
284     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
285     fi
286     return 0
287     }
288    
289 azarah 1.8 strip-flags() {
290 agriffis 1.58 local x y flag NEW_CFLAGS NEW_CXXFLAGS
291    
292 vapier 1.36 setup-allowed-flags
293    
294 azarah 1.8 local NEW_CFLAGS=""
295     local NEW_CXXFLAGS=""
296    
297 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
298 vapier 1.84 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
299 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
300     fi
301    
302 agriffis 1.58 set -f # disable pathname expansion
303 azarah 1.8
304 agriffis 1.58 for x in ${CFLAGS}; do
305     for y in ${ALLOWED_FLAGS}; do
306 lostlogic 1.14 flag=${x%%=*}
307 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
308 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
309     break
310 azarah 1.8 fi
311     done
312     done
313    
314 agriffis 1.58 for x in ${CXXFLAGS}; do
315     for y in ${ALLOWED_FLAGS}; do
316 lostlogic 1.14 flag=${x%%=*}
317 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
318 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
319     break
320 azarah 1.8 fi
321     done
322     done
323 azarah 1.30
324     # In case we filtered out all optimization flags fallback to -O2
325     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
326     NEW_CFLAGS="${NEW_CFLAGS} -O2"
327     fi
328     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
329     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
330     fi
331 azarah 1.8
332 agriffis 1.58 set +f # re-enable pathname expansion
333 azarah 1.8
334     export CFLAGS="${NEW_CFLAGS}"
335     export CXXFLAGS="${NEW_CXXFLAGS}"
336 vapier 1.36 return 0
337 puggy 1.29 }
338    
339 azarah 1.96 test-flag-PROG() {
340     local comp=$1
341     local flags="$2"
342    
343     [[ -z ${comp} || -z ${flags} ]] && \
344     return 1
345    
346     local PROG=$(tc-get${comp})
347     ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
348     > /dev/null 2>&1
349     }
350    
351     # Returns true if C compiler support given flag
352     test-flag-CC() { test-flag-PROG "CC" "$1"; }
353    
354     # Returns true if C++ compiler support given flag
355     test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
356    
357 azarah 1.99 test-flags-PROG() {
358     local comp=$1
359     local flags
360 azarah 1.96 local x
361 azarah 1.99
362     shift
363    
364 vapier 1.113 [[ -z ${comp} ]] && return 1
365 swegener 1.101
366 vapier 1.113 x=""
367 azarah 1.96 for x in "$@" ; do
368 vapier 1.113 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
369 azarah 1.96 done
370    
371 azarah 1.99 echo "${flags}"
372 azarah 1.96
373 azarah 1.99 # Just bail if we dont have any flags
374     [[ -n ${flags} ]]
375 azarah 1.96 }
376    
377 azarah 1.99 # Returns (echo's) the given flags supported by the C compiler
378     test-flags-CC() { test-flags-PROG "CC" "$@"; }
379    
380     # Returns (echo's) the given flags supported by the C++ compiler
381     test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
382    
383     # Short-hand that should hopefully work for both C and C++ compiler, but
384 azarah 1.100 # its really only present due to the append-flags() abomination.
385 azarah 1.99 test-flags() { test-flags-CC "$@"; }
386    
387 kevquinn 1.105 # Depriciated, use test-flags()
388 vapier 1.36 test_flag() {
389 kevquinn 1.104 ewarn "test_flag: deprecated, please use test-flags()!" >&2
390 azarah 1.96
391 azarah 1.99 test-flags-CC "$@"
392 puggy 1.29 }
393    
394 agriffis 1.58 test_version_info() {
395 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
396 agriffis 1.58 return 0
397     else
398     return 1
399     fi
400     }
401    
402 puggy 1.29 strip-unsupported-flags() {
403 vapier 1.113 export CFLAGS=$(test-flags-CC ${CFLAGS})
404     export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
405 azarah 1.8 }
406    
407 vapier 1.10 get-flag() {
408 agriffis 1.58 local f findflag="$1"
409    
410 vapier 1.36 # this code looks a little flaky but seems to work for
411     # everything we want ...
412     # for example, if CFLAGS="-march=i686":
413 agriffis 1.58 # `get-flag -march` == "-march=i686"
414     # `get-flag march` == "i686"
415 vapier 1.10 for f in ${CFLAGS} ${CXXFLAGS} ; do
416     if [ "${f/${findflag}}" != "${f}" ] ; then
417 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
418 vapier 1.28 return 0
419 vapier 1.10 fi
420     done
421 vapier 1.28 return 1
422 joker 1.16 }
423    
424 kevquinn 1.92 # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
425 solar 1.53 has_hardened() {
426 kevquinn 1.104 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
427 swegener 1.101
428 lv 1.69 test_version_info Hardened && return 0
429 azarah 1.96 # The specs file wont exist unless gcc has GCC_SPECS support
430     [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
431 solar 1.53 }
432    
433 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
434 solar 1.81 # indicate whether PIC is set
435 tseng 1.42 has_pic() {
436 kevquinn 1.104 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
437 swegener 1.101
438 azarah 1.96 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
439 kevquinn 1.105 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
440     gcc-specs-pie
441 tseng 1.42 }
442    
443 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
444 solar 1.81 # indicate whether PIE is set
445 mr_bones_ 1.83 has_pie() {
446 kevquinn 1.104 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
447 swegener 1.101
448 azarah 1.96 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
449 kevquinn 1.105 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
450     gcc-specs-pie
451 tseng 1.42 }
452 mr_bones_ 1.83
453 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
454 solar 1.86 # indicate whether code for SSP is being generated for all functions
455     has_ssp_all() {
456 kevquinn 1.104 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
457 swegener 1.101
458 solar 1.86 # note; this matches only -fstack-protector-all
459 azarah 1.96 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
460     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
461 kevquinn 1.105 gcc-specs-ssp-all
462 solar 1.86 }
463    
464 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
465 solar 1.81 # indicate whether code for SSP is being generated
466 tseng 1.42 has_ssp() {
467 kevquinn 1.104 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
468 swegener 1.101
469 solar 1.81 # note; this matches both -fstack-protector and -fstack-protector-all
470 azarah 1.96 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
471     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
472     gcc-specs-ssp
473 tseng 1.42 }
474    
475 lv 1.56 has_m64() {
476 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
477     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
478     # please dont replace this function with test_flag in some future
479     # clean-up!
480 swegener 1.101
481 vapier 1.72 local temp="$(emktemp)"
482 azarah 1.96 echo "int main() { return(0); }" > "${temp}".c
483 kugelfang 1.74 MY_CC=$(tc-getCC)
484 azarah 1.96 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
485 vapier 1.72 local ret=$?
486 azarah 1.96 rm -f "${temp}".c
487     [[ ${ret} != 1 ]] && return 0
488 lv 1.62 return 1
489 lv 1.56 }
490    
491     has_m32() {
492 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
493     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
494     # please dont replace this function with test_flag in some future
495     # clean-up!
496 eradicator 1.80
497     [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
498    
499 vapier 1.95 local temp=$(emktemp)
500     echo "int main() { return(0); }" > "${temp}".c
501 kugelfang 1.74 MY_CC=$(tc-getCC)
502 vapier 1.95 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
503 vapier 1.72 local ret=$?
504 vapier 1.95 rm -f "${temp}".c
505 azarah 1.96 [[ ${ret} != 1 ]] && return 0
506 lv 1.62 return 1
507 lv 1.56 }
508    
509 vapier 1.18 replace-sparc64-flags() {
510 fmccor 1.98 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
511 joker 1.16
512 mr_bones_ 1.83 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
513 agriffis 1.58 for x in ${SPARC64_CPUS}; do
514 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
515     done
516 mr_bones_ 1.83 else
517 swegener 1.111 for x in ${SPARC64_CPUS}; do
518 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
519     done
520     fi
521 mr_bones_ 1.83
522     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
523 agriffis 1.58 for x in ${SPARC64_CPUS}; do
524 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
525     done
526     else
527 swegener 1.111 for x in ${SPARC64_CPUS}; do
528 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
529     done
530     fi
531 vapier 1.59
532     export CFLAGS CXXFLAGS
533 solar 1.27 }
534    
535     append-ldflags() {
536 kevquinn 1.105 [[ -z $* ]] && return 0
537 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
538 vapier 1.28 return 0
539 solar 1.27 }
540    
541 kevquinn 1.105 # Remove flags from LDFLAGS - it's up to the ebuild to filter
542     # CFLAGS and CXXFLAGS via filter-flags if they need to.
543 solar 1.41 filter-ldflags() {
544 kevquinn 1.105 _filter-var LDFLAGS "$@"
545 solar 1.41 return 0
546     }
547    
548 kevquinn 1.105 # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
549     # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
550     # to gcc where it needs the '-Wl,'.
551 vapier 1.102 raw-ldflags() {
552     local x input="$@"
553     [[ -z ${input} ]] && input=${LDFLAGS}
554     set --
555     for x in ${input} ; do
556 vapier 1.103 x=${x#-Wl,}
557     set -- "$@" ${x//,/ }
558 vapier 1.102 done
559     echo "$@"
560     }
561    
562 flameeyes 1.94 # Gets the flags needed for "NOW" binding
563     bindnow-flags() {
564     case $($(tc-getLD) -v 2>&1 </dev/null) in
565     *GNU* | *'with BFD'*) # GNU ld
566     echo "-Wl,-z,now" ;;
567     *Apple*) # Darwin ld
568     echo "-bind_at_load" ;;
569     *)
570     # Some linkers just recognize -V instead of -v
571     case $($(tc-getLD) -V 2>&1 </dev/null) in
572     *Solaris*) # Solaris accept almost the same GNU options
573     echo "-Wl,-z,now" ;;
574     esac
575     ;;
576     esac
577     }
578 vapier 1.113
579    
580     # Some tests for when we screw with things and want to make
581     # sure we didn't break anything
582     #TESTS() {
583     # CFLAGS="-a -b -c=1"
584     # CXXFLAGS="-x -y -z=2"
585     # LDFLAGS="-l -m -n=3"
586     #
587     # die() { exit 1; }
588     # (is-flag 1 2 3) && die
589     # (is-ldflag 1 2 3) && die
590     #
591     # is-flagq -l && die
592     # is-ldflagq -a && die
593     # is-flagq -a || die
594     # is-flagq -x || die
595     # is-ldflagq -n=* || die
596     # is-ldflagq -n && die
597     #
598     # strip-unsupported-flags
599     # [[ ${CFLAGS} == "-c=1" ]] || die
600     # [[ ${CXXFLAGS} == "-y -z=2" ]] || die
601     #
602     # echo "All tests pass"
603     #}
604     #TESTS

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