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Revision 1.120 - (hide annotations) (download)
Sun Jul 22 08:21:09 2007 UTC (7 years, 5 months ago) by dberkholz
Branch: MAIN
Changes since 1.119: +2 -1 lines
Add -W* and -w to ALLOWED_FLAGS.

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 dberkholz 1.120 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.119 2007/05/12 11:45:51 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="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
101 vapier 1.119 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-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="${ALLOWED_FLAGS} -fno-ident"
105 dberkholz 1.120 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w"
106 vapier 1.44 fi
107 vapier 1.65 # allow a bunch of flags that negate features / control ABI
108 vapier 1.119 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \
109     -fno-strict-aliasing -fno-bounds-checking"
110 vapier 1.87 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
111     -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
112     -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
113     -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
114 vapier 1.110 -mieee -mieee-with-inexact -mschedule \
115 vapier 1.91 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
116 vapier 1.87 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
117     -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
118 vapier 1.114 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \
119 vapier 1.115 -msecure-plt -D*"
120 vapier 1.36
121     # C[XX]FLAGS that we are think is ok, but needs testing
122     # NOTE: currently -Os have issues with gcc3 and K6* arch's
123 vapier 1.106 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
124 vapier 1.36 return 0
125 aliz 1.24 }
126 verwilst 1.13
127 kevquinn 1.105 # inverted filters for hardened compiler. This is trying to unpick
128     # the hardened compiler defaults.
129     _filter-hardened() {
130     local f
131     for f in "$@" ; do
132     case "${f}" in
133     # Ideally we should only concern ourselves with PIE flags,
134     # not -fPIC or -fpic, but too many places filter -fPIC without
135     # thinking about -fPIE.
136     -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
137     gcc-specs-pie || continue
138     is-flagq -nopie || append-flags -nopie;;
139     -fstack-protector)
140     gcc-specs-ssp || continue
141     is-flagq -fno-stack-protector || append-flags -fno-stack-protector;;
142     -fstack-protector-all)
143     gcc-specs-ssp-to-all || continue
144     is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;;
145 solar 1.27 esac
146     done
147 kevquinn 1.105 }
148    
149     # Remove occurrences of strings from variable given in $1
150     # Strings removed are matched as globs, so for example
151     # '-O*' would remove -O1, -O2 etc.
152     _filter-var() {
153     local f x VAR VAL
154     declare -a new
155 vapier 1.36
156 kevquinn 1.105 VAR=$1
157     shift
158     eval VAL=\${${VAR}}
159     for f in ${VAL}; do
160     for x in "$@"; do
161     # Note this should work with globs like -O*
162     [[ ${f} == ${x} ]] && continue 2
163 agriffis 1.61 done
164 kevquinn 1.105 eval new\[\${\#new\[@]}]=\${f}
165 verwilst 1.1 done
166 kevquinn 1.105 eval export ${VAR}=\${new\[*]}
167     }
168 agriffis 1.61
169 kevquinn 1.105 filter-flags() {
170     _filter-hardened "$@"
171     _filter-var CFLAGS "$@"
172 vapier 1.118 _filter-var CPPFLAGS "$@"
173 kevquinn 1.105 _filter-var CXXFLAGS "$@"
174 vapier 1.36 return 0
175 verwilst 1.2 }
176    
177 vapier 1.40 filter-lfs-flags() {
178 vapier 1.93 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
179 vapier 1.40 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
180     }
181    
182 vapier 1.118 append-cppflags() {
183     [[ -z $* ]] && return 0
184     export CPPFLAGS="${CPPFLAGS} $*"
185     return 0
186     }
187    
188 vapier 1.48 append-lfs-flags() {
189 vapier 1.93 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
190 vapier 1.118 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
191 vapier 1.48 }
192    
193 vapier 1.18 append-flags() {
194 solar 1.82 [[ -z $* ]] && return 0
195 agriffis 1.58 export CFLAGS="${CFLAGS} $*"
196     export CXXFLAGS="${CXXFLAGS} $*"
197 vapier 1.28 return 0
198 verwilst 1.1 }
199    
200 vapier 1.18 replace-flags() {
201 vapier 1.93 [[ $# != 2 ]] \
202     && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
203     && die "replace-flags takes 2 arguments, not $#"
204    
205 mr_bones_ 1.83 local f fset
206 agriffis 1.64 declare -a new_CFLAGS new_CXXFLAGS
207    
208     for fset in CFLAGS CXXFLAGS; do
209     # Looping over the flags instead of using a global
210     # substitution ensures that we're working with flag atoms.
211     # Otherwise globs like -O* have the potential to wipe out the
212     # list of flags.
213     for f in ${!fset}; do
214     # Note this should work with globs like -O*
215     [[ ${f} == ${1} ]] && f=${2}
216     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
217     done
218     eval export ${fset}=\${new_${fset}\[*]}
219     done
220    
221 vapier 1.28 return 0
222 danarmak 1.7 }
223    
224 vapier 1.37 replace-cpu-flags() {
225 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
226     while [ $# -gt 1 ] ; do
227 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
228 vapier 1.113 # ${oldcpu}) prior to calling replace-flags
229 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
230     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
231     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
232     shift
233 vapier 1.37 done
234     return 0
235     }
236    
237 vapier 1.113 _is_flagq() {
238 kevquinn 1.105 local x
239 vapier 1.113 for x in ${!1} ; do
240     [[ ${x} == $2 ]] && return 0
241 kevquinn 1.105 done
242     return 1
243     }
244    
245 vapier 1.113 is-flagq() {
246     [[ -n $2 ]] && die "Usage: is-flag <flag>"
247     _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1
248     }
249    
250 danarmak 1.7 is-flag() {
251 vapier 1.113 is-flagq "$@" && echo true
252 kevquinn 1.105 }
253    
254     is-ldflagq() {
255 vapier 1.113 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
256     _is_flagq LDFLAGS $1
257 verwilst 1.1 }
258 azarah 1.8
259 kevquinn 1.105 is-ldflag() {
260 vapier 1.113 is-ldflagq "$@" && echo true
261 kevquinn 1.105 }
262    
263 vapier 1.36 filter-mfpmath() {
264 agriffis 1.58 local orig_mfpmath new_math prune_math
265    
266 vapier 1.36 # save the original -mfpmath flag
267 vapier 1.109 orig_mfpmath=$(get-flag -mfpmath)
268 vapier 1.36 # get the value of the current -mfpmath flag
269 vapier 1.109 new_math=$(get-flag mfpmath)
270     new_math=" ${new_math//,/ } "
271 vapier 1.36 # figure out which math values are to be removed
272 agriffis 1.58 prune_math=""
273 vapier 1.36 for prune_math in "$@" ; do
274 vapier 1.109 new_math=${new_math/ ${prune_math} / }
275 vapier 1.36 done
276 vapier 1.109 new_math=$(echo ${new_math})
277     new_math=${new_math// /,}
278 vapier 1.36
279 vapier 1.109 if [[ -z ${new_math} ]] ; then
280 vapier 1.36 # 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 vapier 1.113 [[ -z ${comp} ]] && return 1
367 swegener 1.101
368 vapier 1.113 x=""
369 azarah 1.96 for x in "$@" ; do
370 vapier 1.113 test-flag-${comp} "${x}" && flags="${flags}${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) == *$1* ]]; then
398 agriffis 1.58 return 0
399     else
400     return 1
401     fi
402     }
403    
404 puggy 1.29 strip-unsupported-flags() {
405 vapier 1.113 export CFLAGS=$(test-flags-CC ${CFLAGS})
406     export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
407 azarah 1.8 }
408    
409 vapier 1.10 get-flag() {
410 agriffis 1.58 local f findflag="$1"
411    
412 vapier 1.36 # this code looks a little flaky but seems to work for
413     # everything we want ...
414     # for example, if CFLAGS="-march=i686":
415 agriffis 1.58 # `get-flag -march` == "-march=i686"
416     # `get-flag march` == "i686"
417 vapier 1.10 for f in ${CFLAGS} ${CXXFLAGS} ; do
418     if [ "${f/${findflag}}" != "${f}" ] ; then
419 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
420 vapier 1.28 return 0
421 vapier 1.10 fi
422     done
423 vapier 1.28 return 1
424 joker 1.16 }
425    
426 kevquinn 1.92 # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
427 solar 1.53 has_hardened() {
428 kevquinn 1.104 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
429 swegener 1.101
430 lv 1.69 test_version_info Hardened && return 0
431 azarah 1.96 # The specs file wont exist unless gcc has GCC_SPECS support
432     [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
433 solar 1.53 }
434    
435 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
436 solar 1.81 # indicate whether PIC is set
437 tseng 1.42 has_pic() {
438 kevquinn 1.104 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
439 swegener 1.101
440 azarah 1.96 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
441 kevquinn 1.105 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
442     gcc-specs-pie
443 tseng 1.42 }
444    
445 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
446 solar 1.81 # indicate whether PIE is set
447 mr_bones_ 1.83 has_pie() {
448 kevquinn 1.104 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
449 swegener 1.101
450 azarah 1.96 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
451 kevquinn 1.105 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
452     gcc-specs-pie
453 tseng 1.42 }
454 mr_bones_ 1.83
455 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
456 solar 1.86 # indicate whether code for SSP is being generated for all functions
457     has_ssp_all() {
458 kevquinn 1.104 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
459 swegener 1.101
460 solar 1.86 # note; this matches only -fstack-protector-all
461 azarah 1.96 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
462     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
463 kevquinn 1.105 gcc-specs-ssp-all
464 solar 1.86 }
465    
466 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
467 solar 1.81 # indicate whether code for SSP is being generated
468 tseng 1.42 has_ssp() {
469 kevquinn 1.104 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
470 swegener 1.101
471 solar 1.81 # note; this matches both -fstack-protector and -fstack-protector-all
472 azarah 1.96 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
473     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
474     gcc-specs-ssp
475 tseng 1.42 }
476    
477 lv 1.56 has_m64() {
478 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
479     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
480     # please dont replace this function with test_flag in some future
481     # clean-up!
482 swegener 1.101
483 vapier 1.72 local temp="$(emktemp)"
484 azarah 1.96 echo "int main() { return(0); }" > "${temp}".c
485 kugelfang 1.74 MY_CC=$(tc-getCC)
486 azarah 1.96 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
487 vapier 1.72 local ret=$?
488 azarah 1.96 rm -f "${temp}".c
489     [[ ${ret} != 1 ]] && return 0
490 lv 1.62 return 1
491 lv 1.56 }
492    
493     has_m32() {
494 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
495     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
496     # please dont replace this function with test_flag in some future
497     # clean-up!
498 eradicator 1.80
499     [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
500    
501 vapier 1.95 local temp=$(emktemp)
502     echo "int main() { return(0); }" > "${temp}".c
503 kugelfang 1.74 MY_CC=$(tc-getCC)
504 vapier 1.95 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
505 vapier 1.72 local ret=$?
506 vapier 1.95 rm -f "${temp}".c
507 azarah 1.96 [[ ${ret} != 1 ]] && return 0
508 lv 1.62 return 1
509 lv 1.56 }
510    
511 vapier 1.18 replace-sparc64-flags() {
512 fmccor 1.98 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
513 joker 1.16
514 mr_bones_ 1.83 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
515 agriffis 1.58 for x in ${SPARC64_CPUS}; do
516 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
517     done
518 mr_bones_ 1.83 else
519 swegener 1.111 for x in ${SPARC64_CPUS}; do
520 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
521     done
522     fi
523 mr_bones_ 1.83
524     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
525 agriffis 1.58 for x in ${SPARC64_CPUS}; do
526 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
527     done
528     else
529 swegener 1.111 for x in ${SPARC64_CPUS}; do
530 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
531     done
532     fi
533 vapier 1.59
534     export CFLAGS CXXFLAGS
535 solar 1.27 }
536    
537     append-ldflags() {
538 kevquinn 1.105 [[ -z $* ]] && return 0
539 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
540 vapier 1.28 return 0
541 solar 1.27 }
542    
543 kevquinn 1.105 # Remove flags from LDFLAGS - it's up to the ebuild to filter
544     # CFLAGS and CXXFLAGS via filter-flags if they need to.
545 solar 1.41 filter-ldflags() {
546 kevquinn 1.105 _filter-var LDFLAGS "$@"
547 solar 1.41 return 0
548     }
549    
550 kevquinn 1.105 # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
551     # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
552     # to gcc where it needs the '-Wl,'.
553 vapier 1.102 raw-ldflags() {
554     local x input="$@"
555     [[ -z ${input} ]] && input=${LDFLAGS}
556     set --
557     for x in ${input} ; do
558 vapier 1.103 x=${x#-Wl,}
559     set -- "$@" ${x//,/ }
560 vapier 1.102 done
561     echo "$@"
562     }
563    
564 flameeyes 1.94 # Gets the flags needed for "NOW" binding
565     bindnow-flags() {
566     case $($(tc-getLD) -v 2>&1 </dev/null) in
567     *GNU* | *'with BFD'*) # GNU ld
568     echo "-Wl,-z,now" ;;
569     *Apple*) # Darwin ld
570     echo "-bind_at_load" ;;
571     *)
572     # Some linkers just recognize -V instead of -v
573     case $($(tc-getLD) -V 2>&1 </dev/null) in
574     *Solaris*) # Solaris accept almost the same GNU options
575     echo "-Wl,-z,now" ;;
576     esac
577     ;;
578     esac
579     }
580 vapier 1.113
581    
582     # Some tests for when we screw with things and want to make
583     # sure we didn't break anything
584     #TESTS() {
585     # CFLAGS="-a -b -c=1"
586     # CXXFLAGS="-x -y -z=2"
587     # LDFLAGS="-l -m -n=3"
588     #
589     # die() { exit 1; }
590     # (is-flag 1 2 3) && die
591     # (is-ldflag 1 2 3) && die
592     #
593     # is-flagq -l && die
594     # is-ldflagq -a && die
595     # is-flagq -a || die
596     # is-flagq -x || die
597     # is-ldflagq -n=* || die
598     # is-ldflagq -n && die
599     #
600     # strip-unsupported-flags
601     # [[ ${CFLAGS} == "-c=1" ]] || die
602     # [[ ${CXXFLAGS} == "-y -z=2" ]] || die
603     #
604     # echo "All tests pass"
605     #}
606     #TESTS

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