/[gentoo-x86]/eclass/flag-o-matic.eclass
Gentoo

Contents of /eclass/flag-o-matic.eclass

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1.125 - (hide annotations) (download)
Sun Sep 14 19:43:41 2008 UTC (5 years, 11 months ago) by dirtyepic
Branch: MAIN
Changes since 1.124: +2 -2 lines
Also declare new_FFLAGS and new_FCFLAGS as arrays in replace-flags().  Bug #234249.

1 vapier 1.121 # Copyright 1999-2008 Gentoo Foundation
2 verwilst 1.1 # Distributed under the terms of the GNU General Public License v2
3 dirtyepic 1.125 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.124 2008/07/03 05:30:54 dberkholz Exp $
4 vapier 1.121
5     # @ECLASS: flag-o-matic.eclass
6     # @MAINTAINER:
7     # toolchain@gentoo.org
8     # @BLURB: common functions to manipulate and query toolchain flags
9     # @DESCRIPTION:
10     # This eclass contains a suite of functions to help developers sanely
11     # and safely manage toolchain flags in their builds.
12 vapier 1.63
13 eradicator 1.80 inherit eutils toolchain-funcs multilib
14 vapier 1.72
15 kevquinn 1.92 ################ DEPRECATED functions ################
16     # The following are still present to avoid breaking existing
17     # code more than necessary; however they are deprecated. Please
18     # use gcc-specs-* from toolchain-funcs.eclass instead, if you
19     # need to know which hardened techs are active in the compiler.
20     # See bug #100974
21     #
22 vapier 1.121 # has_hardened
23     # has_pie
24     # has_pic
25     # has_ssp_all
26     # has_ssp
27    
28 verwilst 1.3
29 dberkholz 1.124 # {C,CXX,F,FC}FLAGS that we allow in strip-flags
30 vapier 1.117 # Note: shell globs and character lists are allowed
31 vapier 1.36 setup-allowed-flags() {
32 vapier 1.84 if [[ -z ${ALLOWED_FLAGS} ]] ; then
33 vapier 1.76 export ALLOWED_FLAGS="-pipe"
34     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
35 vapier 1.87 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
36 vapier 1.119 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking"
37 kevquinn 1.105 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time"
38 vapier 1.117 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+"
39 vapier 1.107 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident"
40 dberkholz 1.120 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w"
41 vapier 1.44 fi
42 vapier 1.65 # allow a bunch of flags that negate features / control ABI
43 vapier 1.119 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \
44     -fno-strict-aliasing -fno-bounds-checking"
45 vapier 1.87 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
46     -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
47     -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
48     -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
49 vapier 1.110 -mieee -mieee-with-inexact -mschedule \
50 vapier 1.91 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
51 vapier 1.87 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
52     -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
53 vapier 1.114 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \
54 vapier 1.115 -msecure-plt -D*"
55 vapier 1.36
56 dberkholz 1.124 # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing
57 vapier 1.36 # NOTE: currently -Os have issues with gcc3 and K6* arch's
58 vapier 1.106 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
59 vapier 1.36 return 0
60 aliz 1.24 }
61 verwilst 1.13
62 kevquinn 1.105 # inverted filters for hardened compiler. This is trying to unpick
63     # the hardened compiler defaults.
64     _filter-hardened() {
65     local f
66     for f in "$@" ; do
67     case "${f}" in
68     # Ideally we should only concern ourselves with PIE flags,
69     # not -fPIC or -fpic, but too many places filter -fPIC without
70     # thinking about -fPIE.
71     -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
72     gcc-specs-pie || continue
73     is-flagq -nopie || append-flags -nopie;;
74     -fstack-protector)
75     gcc-specs-ssp || continue
76     is-flagq -fno-stack-protector || append-flags -fno-stack-protector;;
77     -fstack-protector-all)
78     gcc-specs-ssp-to-all || continue
79     is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;;
80 solar 1.27 esac
81     done
82 kevquinn 1.105 }
83    
84     # Remove occurrences of strings from variable given in $1
85     # Strings removed are matched as globs, so for example
86     # '-O*' would remove -O1, -O2 etc.
87     _filter-var() {
88     local f x VAR VAL
89     declare -a new
90 vapier 1.36
91 kevquinn 1.105 VAR=$1
92     shift
93     eval VAL=\${${VAR}}
94     for f in ${VAL}; do
95     for x in "$@"; do
96     # Note this should work with globs like -O*
97     [[ ${f} == ${x} ]] && continue 2
98 agriffis 1.61 done
99 kevquinn 1.105 eval new\[\${\#new\[@]}]=\${f}
100 verwilst 1.1 done
101 kevquinn 1.105 eval export ${VAR}=\${new\[*]}
102     }
103 agriffis 1.61
104 vapier 1.121 # @FUNCTION: filter-flags
105     # @USAGE: <flags>
106     # @DESCRIPTION:
107 dberkholz 1.124 # Remove particular <flags> from {C,CPP,CXX,F,FC}FLAGS. Accepts shell globs.
108 kevquinn 1.105 filter-flags() {
109     _filter-hardened "$@"
110     _filter-var CFLAGS "$@"
111 vapier 1.118 _filter-var CPPFLAGS "$@"
112 kevquinn 1.105 _filter-var CXXFLAGS "$@"
113 dberkholz 1.124 _filter-var FFLAGS "$@"
114     _filter-var FCFLAGS "$@"
115 vapier 1.36 return 0
116 verwilst 1.2 }
117    
118 vapier 1.121 # @FUNCTION: filter-lfs-flags
119     # @DESCRIPTION:
120     # Remove flags that enable Large File Support.
121 vapier 1.40 filter-lfs-flags() {
122 vapier 1.93 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
123 vapier 1.40 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
124     }
125    
126 vapier 1.121 # @FUNCTION: append-cppflags
127     # @USAGE: <flags>
128     # @DESCRIPTION:
129     # Add extra <flags> to the current CPPFLAGS.
130 vapier 1.118 append-cppflags() {
131     [[ -z $* ]] && return 0
132     export CPPFLAGS="${CPPFLAGS} $*"
133     return 0
134     }
135    
136 dberkholz 1.124 # @FUNCTION: append-fflags
137     # @USAGE: <flags>
138     # @DESCRIPTION:
139     # Add extra <flags> to the current {F,FC}FLAGS.
140     append-fflags() {
141     [[ -z $* ]] && return 0
142     export FFLAGS="${FFLAGS} $*"
143     export FCFLAGS="${FCFLAGS} $*"
144     return 0
145     }
146    
147 vapier 1.121 # @FUNCTION: append-lfs-flags
148     # @DESCRIPTION:
149     # Add flags that enable Large File Support.
150 vapier 1.48 append-lfs-flags() {
151 vapier 1.93 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
152 vapier 1.118 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
153 vapier 1.48 }
154    
155 vapier 1.121 # @FUNCTION: append-flags
156     # @USAGE: <flags>
157     # @DESCRIPTION:
158 dberkholz 1.124 # Add extra <flags> to your current {C,CXX,F,FC}FLAGS.
159 vapier 1.18 append-flags() {
160 solar 1.82 [[ -z $* ]] && return 0
161 agriffis 1.58 export CFLAGS="${CFLAGS} $*"
162     export CXXFLAGS="${CXXFLAGS} $*"
163 dberkholz 1.124 export FFLAGS="${FFLAGS} $*"
164     export FCFLAGS="${FCFLAGS} $*"
165 vapier 1.28 return 0
166 verwilst 1.1 }
167    
168 vapier 1.121 # @FUNCTION: replace-flags
169     # @USAGE: <old> <new>
170     # @DESCRIPTION:
171     # Replace the <old> flag with <new>. Accepts shell globs for <old>.
172 vapier 1.18 replace-flags() {
173 vapier 1.93 [[ $# != 2 ]] \
174     && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
175     && die "replace-flags takes 2 arguments, not $#"
176    
177 mr_bones_ 1.83 local f fset
178 dirtyepic 1.125 declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS
179 agriffis 1.64
180 dberkholz 1.124 for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do
181 agriffis 1.64 # Looping over the flags instead of using a global
182     # substitution ensures that we're working with flag atoms.
183     # Otherwise globs like -O* have the potential to wipe out the
184     # list of flags.
185     for f in ${!fset}; do
186     # Note this should work with globs like -O*
187     [[ ${f} == ${1} ]] && f=${2}
188     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
189     done
190     eval export ${fset}=\${new_${fset}\[*]}
191     done
192    
193 vapier 1.28 return 0
194 danarmak 1.7 }
195    
196 vapier 1.121 # @FUNCTION: replace-cpu-flags
197     # @USAGE: <old> <new>
198     # @DESCRIPTION:
199     # Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu
200     # with flags that select the <new> cpu. Accepts shell globs for <old>.
201 vapier 1.37 replace-cpu-flags() {
202 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
203     while [ $# -gt 1 ] ; do
204 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
205 vapier 1.113 # ${oldcpu}) prior to calling replace-flags
206 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
207     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
208     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
209     shift
210 vapier 1.37 done
211     return 0
212     }
213    
214 vapier 1.113 _is_flagq() {
215 kevquinn 1.105 local x
216 vapier 1.113 for x in ${!1} ; do
217     [[ ${x} == $2 ]] && return 0
218 kevquinn 1.105 done
219     return 1
220     }
221    
222 vapier 1.121 # @FUNCTION: is-flagq
223     # @USAGE: <flag>
224     # @DESCRIPTION:
225 dberkholz 1.124 # Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs.
226 vapier 1.113 is-flagq() {
227     [[ -n $2 ]] && die "Usage: is-flag <flag>"
228 dberkholz 1.124 _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1
229 vapier 1.113 }
230    
231 vapier 1.121 # @FUNCTION: is-flag
232     # @USAGE: <flag>
233     # @DESCRIPTION:
234 dberkholz 1.124 # Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs.
235 danarmak 1.7 is-flag() {
236 vapier 1.113 is-flagq "$@" && echo true
237 kevquinn 1.105 }
238    
239 vapier 1.121 # @FUNCTION: is-ldflagq
240     # @USAGE: <flag>
241     # @DESCRIPTION:
242     # Returns shell true if <flag> is in LDFLAGS, else returns shell false. Accepts shell globs.
243 kevquinn 1.105 is-ldflagq() {
244 vapier 1.113 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
245     _is_flagq LDFLAGS $1
246 verwilst 1.1 }
247 azarah 1.8
248 vapier 1.121 # @FUNCTION: is-ldflag
249     # @USAGE: <flag>
250     # @DESCRIPTION:
251     # Echo's "true" if flag is set in LDFLAGS. Accepts shell globs.
252 kevquinn 1.105 is-ldflag() {
253 vapier 1.113 is-ldflagq "$@" && echo true
254 kevquinn 1.105 }
255    
256 vapier 1.121 # @FUNCTION: filter-mfpmath
257     # @USAGE: <math types>
258     # @DESCRIPTION:
259     # Remove specified math types from the fpmath flag. For example, if the user
260     # has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with
261     # -mfpmath=386.
262 vapier 1.36 filter-mfpmath() {
263 agriffis 1.58 local orig_mfpmath new_math prune_math
264    
265 vapier 1.36 # save the original -mfpmath flag
266 vapier 1.109 orig_mfpmath=$(get-flag -mfpmath)
267 vapier 1.36 # get the value of the current -mfpmath flag
268 vapier 1.109 new_math=$(get-flag mfpmath)
269     new_math=" ${new_math//,/ } "
270 vapier 1.36 # figure out which math values are to be removed
271 agriffis 1.58 prune_math=""
272 vapier 1.36 for prune_math in "$@" ; do
273 vapier 1.109 new_math=${new_math/ ${prune_math} / }
274 vapier 1.36 done
275 vapier 1.109 new_math=$(echo ${new_math})
276     new_math=${new_math// /,}
277 vapier 1.36
278 vapier 1.109 if [[ -z ${new_math} ]] ; then
279 vapier 1.36 # 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 vapier 1.121 # @FUNCTION: strip-flags
291     # @DESCRIPTION:
292     # Strip C[XX]FLAGS of everything except known good/safe flags.
293 azarah 1.8 strip-flags() {
294 dberkholz 1.124 local x y flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS
295 agriffis 1.58
296 vapier 1.36 setup-allowed-flags
297    
298 azarah 1.8 local NEW_CFLAGS=""
299     local NEW_CXXFLAGS=""
300 dberkholz 1.124 local NEW_FFLAGS=""
301     local NEW_FCFLAGS=""
302 azarah 1.8
303 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
304 vapier 1.84 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
305 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
306     fi
307    
308 agriffis 1.58 set -f # disable pathname expansion
309 azarah 1.8
310 agriffis 1.58 for x in ${CFLAGS}; do
311     for y in ${ALLOWED_FLAGS}; do
312 lostlogic 1.14 flag=${x%%=*}
313 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
314 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
315     break
316 azarah 1.8 fi
317     done
318     done
319    
320 agriffis 1.58 for x in ${CXXFLAGS}; do
321     for y in ${ALLOWED_FLAGS}; do
322 lostlogic 1.14 flag=${x%%=*}
323 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
324 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
325     break
326 azarah 1.8 fi
327     done
328     done
329 azarah 1.30
330 dberkholz 1.124 for x in ${FFLAGS}; do
331     for y in ${ALLOWED_FLAGS}; do
332     flag=${x%%=*}
333     if [ "${flag%%${y}}" = "" ] ; then
334     NEW_FFLAGS="${NEW_FFLAGS} ${x}"
335     break
336     fi
337     done
338     done
339    
340     for x in ${FCFLAGS}; do
341     for y in ${ALLOWED_FLAGS}; do
342     flag=${x%%=*}
343     if [ "${flag%%${y}}" = "" ] ; then
344     NEW_FCFLAGS="${NEW_FCFLAGS} ${x}"
345     break
346     fi
347     done
348     done
349    
350 azarah 1.30 # In case we filtered out all optimization flags fallback to -O2
351     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
352     NEW_CFLAGS="${NEW_CFLAGS} -O2"
353     fi
354     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
355     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
356     fi
357 dberkholz 1.124 if [ "${FFLAGS/-O}" != "${FFLAGS}" -a "${NEW_FFLAGS/-O}" = "${NEW_FFLAGS}" ]; then
358     NEW_FFLAGS="${NEW_FFLAGS} -O2"
359     fi
360     if [ "${FCFLAGS/-O}" != "${FCFLAGS}" -a "${NEW_FCFLAGS/-O}" = "${NEW_FCFLAGS}" ]; then
361     NEW_FCFLAGS="${NEW_FCFLAGS} -O2"
362     fi
363 azarah 1.8
364 agriffis 1.58 set +f # re-enable pathname expansion
365 azarah 1.8
366     export CFLAGS="${NEW_CFLAGS}"
367     export CXXFLAGS="${NEW_CXXFLAGS}"
368 dberkholz 1.124 export FFLAGS="${NEW_FFLAGS}"
369     export FCFLAGS="${NEW_FCFLAGS}"
370 vapier 1.36 return 0
371 puggy 1.29 }
372    
373 azarah 1.96 test-flag-PROG() {
374     local comp=$1
375     local flags="$2"
376    
377     [[ -z ${comp} || -z ${flags} ]] && \
378     return 1
379    
380     local PROG=$(tc-get${comp})
381     ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
382     > /dev/null 2>&1
383     }
384    
385 vapier 1.121 # @FUNCTION: test-flag-CC
386     # @USAGE: <flag>
387     # @DESCRIPTION:
388     # Returns shell true if <flag> is supported by the C compiler, else returns shell false.
389 azarah 1.96 test-flag-CC() { test-flag-PROG "CC" "$1"; }
390    
391 vapier 1.121 # @FUNCTION: test-flag-CXX
392     # @USAGE: <flag>
393     # @DESCRIPTION:
394     # Returns shell true if <flag> is supported by the C++ compiler, else returns shell false.
395 azarah 1.96 test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
396    
397 dberkholz 1.124 # @FUNCTION: test-flag-F77
398     # @USAGE: <flag>
399     # @DESCRIPTION:
400     # Returns shell true if <flag> is supported by the Fortran 77 compiler, else returns shell false.
401     test-flag-F77() { test-flag-PROG "F77" "$1"; }
402    
403     # @FUNCTION: test-flag-FC
404     # @USAGE: <flag>
405     # @DESCRIPTION:
406     # Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false.
407     test-flag-FC() { test-flag-PROG "FC" "$1"; }
408    
409 azarah 1.99 test-flags-PROG() {
410     local comp=$1
411     local flags
412 azarah 1.96 local x
413 azarah 1.99
414     shift
415    
416 vapier 1.113 [[ -z ${comp} ]] && return 1
417 swegener 1.101
418 vapier 1.113 x=""
419 azarah 1.96 for x in "$@" ; do
420 vapier 1.113 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
421 azarah 1.96 done
422    
423 azarah 1.99 echo "${flags}"
424 azarah 1.96
425 azarah 1.99 # Just bail if we dont have any flags
426     [[ -n ${flags} ]]
427 azarah 1.96 }
428    
429 vapier 1.121 # @FUNCTION: test-flags-CC
430     # @USAGE: <flags>
431     # @DESCRIPTION:
432     # Returns shell true if <flags> are supported by the C compiler, else returns shell false.
433 azarah 1.99 test-flags-CC() { test-flags-PROG "CC" "$@"; }
434    
435 vapier 1.121 # @FUNCTION: test-flags-CXX
436     # @USAGE: <flags>
437     # @DESCRIPTION:
438     # Returns shell true if <flags> are supported by the C++ compiler, else returns shell false.
439 azarah 1.99 test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
440    
441 dberkholz 1.124 # @FUNCTION: test-flags-F77
442     # @USAGE: <flags>
443     # @DESCRIPTION:
444     # Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false.
445     test-flags-F77() { test-flags-PROG "F77" "$@"; }
446    
447     # @FUNCTION: test-flags-FC
448     # @USAGE: <flags>
449     # @DESCRIPTION:
450     # Returns shell true if <flags> are supported by the Fortran 90 compiler, else returns shell false.
451     test-flags-FC() { test-flags-PROG "FC" "$@"; }
452    
453 vapier 1.121 # @FUNCTION: test-flags
454     # @USAGE: <flags>
455     # @DESCRIPTION:
456 azarah 1.99 # Short-hand that should hopefully work for both C and C++ compiler, but
457 azarah 1.100 # its really only present due to the append-flags() abomination.
458 azarah 1.99 test-flags() { test-flags-CC "$@"; }
459    
460 vapier 1.121 # @FUNCTION: test_flag
461     # @DESCRIPTION:
462     # DEPRICIATED, use test-flags()
463 vapier 1.36 test_flag() {
464 kevquinn 1.104 ewarn "test_flag: deprecated, please use test-flags()!" >&2
465 azarah 1.96
466 azarah 1.99 test-flags-CC "$@"
467 puggy 1.29 }
468    
469 vapier 1.121 # @FUNCTION: test_version_info
470     # @USAGE: <version>
471     # @DESCRIPTION:
472     # Returns shell true if the current C compiler version matches <version>, else returns shell false.
473     # Accepts shell globs.
474 agriffis 1.58 test_version_info() {
475 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
476 agriffis 1.58 return 0
477     else
478     return 1
479     fi
480     }
481    
482 vapier 1.121 # @FUNCTION: strip-unsupported-flags
483     # @DESCRIPTION:
484 dberkholz 1.124 # Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain.
485 puggy 1.29 strip-unsupported-flags() {
486 vapier 1.113 export CFLAGS=$(test-flags-CC ${CFLAGS})
487     export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
488 dberkholz 1.124 export FFLAGS=$(test-flags-F77 ${FFLAGS})
489     export FCFLAGS=$(test-flags-FC ${FCFLAGS})
490 azarah 1.8 }
491    
492 vapier 1.121 # @FUNCTION: get-flag
493     # @USAGE: <flag>
494     # @DESCRIPTION:
495     # Find and echo the value for a particular flag. Accepts shell globs.
496 vapier 1.10 get-flag() {
497 agriffis 1.58 local f findflag="$1"
498    
499 vapier 1.36 # this code looks a little flaky but seems to work for
500     # everything we want ...
501     # for example, if CFLAGS="-march=i686":
502 agriffis 1.58 # `get-flag -march` == "-march=i686"
503     # `get-flag march` == "i686"
504 dberkholz 1.124 for f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do
505 vapier 1.10 if [ "${f/${findflag}}" != "${f}" ] ; then
506 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
507 vapier 1.28 return 0
508 vapier 1.10 fi
509     done
510 vapier 1.28 return 1
511 joker 1.16 }
512    
513 vapier 1.121 # @FUNCTION: has_hardened
514     # @DESCRIPTION:
515 kevquinn 1.92 # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
516 solar 1.53 has_hardened() {
517 kevquinn 1.104 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
518 swegener 1.101
519 lv 1.69 test_version_info Hardened && return 0
520 azarah 1.96 # The specs file wont exist unless gcc has GCC_SPECS support
521     [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
522 solar 1.53 }
523    
524 vapier 1.121 # @FUNCTION: has_pic
525     # @DESCRIPTION:
526 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
527 solar 1.81 # indicate whether PIC is set
528 tseng 1.42 has_pic() {
529 kevquinn 1.104 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
530 swegener 1.101
531 azarah 1.96 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
532 kevquinn 1.105 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
533     gcc-specs-pie
534 tseng 1.42 }
535    
536 vapier 1.121 # @FUNCTION: has_pie
537     # @DESCRIPTION:
538 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
539 solar 1.81 # indicate whether PIE is set
540 mr_bones_ 1.83 has_pie() {
541 kevquinn 1.104 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
542 swegener 1.101
543 azarah 1.96 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
544 kevquinn 1.105 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
545     gcc-specs-pie
546 tseng 1.42 }
547 mr_bones_ 1.83
548 vapier 1.121 # @FUNCTION: has_ssp_all
549     # @DESCRIPTION:
550 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
551 solar 1.86 # indicate whether code for SSP is being generated for all functions
552     has_ssp_all() {
553 kevquinn 1.104 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
554 swegener 1.101
555 solar 1.86 # note; this matches only -fstack-protector-all
556 azarah 1.96 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
557     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
558 kevquinn 1.105 gcc-specs-ssp-all
559 solar 1.86 }
560    
561 vapier 1.121 # @FUNCTION: has_ssp
562     # @DESCRIPTION:
563 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
564 solar 1.81 # indicate whether code for SSP is being generated
565 tseng 1.42 has_ssp() {
566 kevquinn 1.104 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
567 swegener 1.101
568 solar 1.81 # note; this matches both -fstack-protector and -fstack-protector-all
569 azarah 1.96 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
570     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
571     gcc-specs-ssp
572 tseng 1.42 }
573    
574 vapier 1.121 # @FUNCTION: has_m64
575     # @DESCRIPTION:
576     # This doesn't test if the flag is accepted, it tests if the flag actually
577     # WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works
578     # return code is 0, else the return code is 1.
579 lv 1.56 has_m64() {
580 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
581     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
582     # please dont replace this function with test_flag in some future
583     # clean-up!
584 swegener 1.101
585 vapier 1.72 local temp="$(emktemp)"
586 azarah 1.96 echo "int main() { return(0); }" > "${temp}".c
587 kugelfang 1.74 MY_CC=$(tc-getCC)
588 azarah 1.96 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
589 vapier 1.72 local ret=$?
590 azarah 1.96 rm -f "${temp}".c
591     [[ ${ret} != 1 ]] && return 0
592 lv 1.62 return 1
593 lv 1.56 }
594    
595 vapier 1.121 # @FUNCTION: has_m32
596     # @DESCRIPTION:
597     # This doesn't test if the flag is accepted, it tests if the flag actually
598     # WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return
599     # code is 0, else return code is 1.
600 lv 1.56 has_m32() {
601 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
602     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
603     # please dont replace this function with test_flag in some future
604     # clean-up!
605 eradicator 1.80
606     [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
607    
608 vapier 1.95 local temp=$(emktemp)
609     echo "int main() { return(0); }" > "${temp}".c
610 kugelfang 1.74 MY_CC=$(tc-getCC)
611 vapier 1.95 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
612 vapier 1.72 local ret=$?
613 vapier 1.95 rm -f "${temp}".c
614 azarah 1.96 [[ ${ret} != 1 ]] && return 0
615 lv 1.62 return 1
616 lv 1.56 }
617    
618 vapier 1.121 # @FUNCTION: replace-sparc64-flags
619     # @DESCRIPTION:
620     # Sets mcpu to v8 and uses the original value as mtune if none specified.
621 vapier 1.18 replace-sparc64-flags() {
622 fmccor 1.98 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
623 joker 1.16
624 mr_bones_ 1.83 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
625 agriffis 1.58 for x in ${SPARC64_CPUS}; do
626 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
627     done
628 mr_bones_ 1.83 else
629 swegener 1.111 for x in ${SPARC64_CPUS}; do
630 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
631     done
632     fi
633 mr_bones_ 1.83
634     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
635 agriffis 1.58 for x in ${SPARC64_CPUS}; do
636 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
637     done
638     else
639 swegener 1.111 for x in ${SPARC64_CPUS}; do
640 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
641     done
642     fi
643 vapier 1.59
644     export CFLAGS CXXFLAGS
645 solar 1.27 }
646    
647 vapier 1.121 # @FUNCTION: append-ldflags
648     # @USAGE: <flags>
649     # @DESCRIPTION:
650     # Add extra <flags> to the current LDFLAGS.
651 solar 1.27 append-ldflags() {
652 kevquinn 1.105 [[ -z $* ]] && return 0
653 flameeyes 1.123 local flag
654     for flag in "$@"; do
655     [[ ${flag} == -l* ]] && \
656     ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS"
657     done
658    
659 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
660 vapier 1.28 return 0
661 solar 1.27 }
662    
663 vapier 1.121 # @FUNCTION: filter-ldflags
664     # @USAGE: <flags>
665     # @DESCRIPTION:
666     # Remove particular <flags> from LDFLAGS. Accepts shell globs.
667 solar 1.41 filter-ldflags() {
668 kevquinn 1.105 _filter-var LDFLAGS "$@"
669 solar 1.41 return 0
670     }
671    
672 vapier 1.121 # @FUNCTION: raw-ldflags
673     # @USAGE: <flags>
674     # @DESCRIPTION:
675 kevquinn 1.105 # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
676     # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
677     # to gcc where it needs the '-Wl,'.
678 vapier 1.102 raw-ldflags() {
679     local x input="$@"
680     [[ -z ${input} ]] && input=${LDFLAGS}
681     set --
682     for x in ${input} ; do
683 vapier 1.103 x=${x#-Wl,}
684     set -- "$@" ${x//,/ }
685 vapier 1.102 done
686     echo "$@"
687     }
688    
689 vapier 1.121 # @FUNCTION: bindnow-flags
690     # @RETURN: Returns the flags to enable "now" binding in the current selected linker.
691     # @DESCRIPTION:
692     # DEPRECATED - Gets the flags needed for "NOW" binding
693 flameeyes 1.94 bindnow-flags() {
694 swegener 1.122 ewarn "QA: stop using the bindnow-flags function ... simply drop it from your ebuild" >&2
695 vapier 1.121
696 flameeyes 1.94 case $($(tc-getLD) -v 2>&1 </dev/null) in
697     *GNU* | *'with BFD'*) # GNU ld
698     echo "-Wl,-z,now" ;;
699     *Apple*) # Darwin ld
700     echo "-bind_at_load" ;;
701     *)
702     # Some linkers just recognize -V instead of -v
703     case $($(tc-getLD) -V 2>&1 </dev/null) in
704     *Solaris*) # Solaris accept almost the same GNU options
705     echo "-Wl,-z,now" ;;
706     esac
707     ;;
708     esac
709     }
710 vapier 1.113
711    
712     # Some tests for when we screw with things and want to make
713     # sure we didn't break anything
714     #TESTS() {
715     # CFLAGS="-a -b -c=1"
716     # CXXFLAGS="-x -y -z=2"
717     # LDFLAGS="-l -m -n=3"
718     #
719     # die() { exit 1; }
720     # (is-flag 1 2 3) && die
721     # (is-ldflag 1 2 3) && die
722     #
723     # is-flagq -l && die
724     # is-ldflagq -a && die
725     # is-flagq -a || die
726     # is-flagq -x || die
727     # is-ldflagq -n=* || die
728     # is-ldflagq -n && die
729     #
730     # strip-unsupported-flags
731     # [[ ${CFLAGS} == "-c=1" ]] || die
732     # [[ ${CXXFLAGS} == "-y -z=2" ]] || die
733     #
734     # echo "All tests pass"
735     #}
736     #TESTS

  ViewVC Help
Powered by ViewVC 1.1.20