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

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

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1.136 - (hide annotations) (download)
Sat May 23 23:12:07 2009 UTC (5 years, 6 months ago) by vapier
Branch: MAIN
Changes since 1.135: +14 -5 lines
add a dedicated append-cflags function and define append-flags in terms of other append-*flags functions

1 vapier 1.129 # Copyright 1999-2009 Gentoo Foundation
2 verwilst 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.136 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.135 2009/05/23 23:06:55 vapier 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="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
36 solar 1.127 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-strict-overflow"
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="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \
44 vapier 1.135 -fno-strict-aliasing -fno-bounds-checking -fstrict-overflow -fno-omit-frame-pointer"
45 vapier 1.87 ALLOWED_FLAGS="${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 solar 1.127 -msecure-plt -m*-toc -D* -U*"
55 vapier 1.135
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 gengor 1.131 is-flagq -fno-stack-protector || append-flags $(test-flags -fno-stack-protector);;
77 kevquinn 1.105 -fstack-protector-all)
78     gcc-specs-ssp-to-all || continue
79 gengor 1.131 is-flagq -fno-stack-protector-all || append-flags $(test-flags -fno-stack-protector-all);;
80 gengor 1.128 -fno-strict-overflow)
81     gcc-specs-nostrict || continue
82 gengor 1.131 is-flagq -fstrict-overflow || append-flags $(test-flags -fstrict-overflow);;
83 solar 1.27 esac
84     done
85 kevquinn 1.105 }
86    
87     # Remove occurrences of strings from variable given in $1
88     # Strings removed are matched as globs, so for example
89     # '-O*' would remove -O1, -O2 etc.
90     _filter-var() {
91     local f x VAR VAL
92     declare -a new
93 vapier 1.36
94 kevquinn 1.105 VAR=$1
95     shift
96     eval VAL=\${${VAR}}
97     for f in ${VAL}; do
98     for x in "$@"; do
99     # Note this should work with globs like -O*
100     [[ ${f} == ${x} ]] && continue 2
101 agriffis 1.61 done
102 kevquinn 1.105 eval new\[\${\#new\[@]}]=\${f}
103 verwilst 1.1 done
104 kevquinn 1.105 eval export ${VAR}=\${new\[*]}
105     }
106 agriffis 1.61
107 vapier 1.121 # @FUNCTION: filter-flags
108     # @USAGE: <flags>
109     # @DESCRIPTION:
110 dberkholz 1.124 # Remove particular <flags> from {C,CPP,CXX,F,FC}FLAGS. Accepts shell globs.
111 kevquinn 1.105 filter-flags() {
112     _filter-hardened "$@"
113     _filter-var CFLAGS "$@"
114 vapier 1.118 _filter-var CPPFLAGS "$@"
115 kevquinn 1.105 _filter-var CXXFLAGS "$@"
116 dberkholz 1.124 _filter-var FFLAGS "$@"
117     _filter-var FCFLAGS "$@"
118 vapier 1.36 return 0
119 verwilst 1.2 }
120    
121 vapier 1.121 # @FUNCTION: filter-lfs-flags
122     # @DESCRIPTION:
123     # Remove flags that enable Large File Support.
124 vapier 1.40 filter-lfs-flags() {
125 vapier 1.93 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
126 vapier 1.40 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
127     }
128    
129 vapier 1.121 # @FUNCTION: append-cppflags
130     # @USAGE: <flags>
131     # @DESCRIPTION:
132     # Add extra <flags> to the current CPPFLAGS.
133 vapier 1.118 append-cppflags() {
134     [[ -z $* ]] && return 0
135     export CPPFLAGS="${CPPFLAGS} $*"
136     return 0
137     }
138    
139 vapier 1.136 # @FUNCTION: append-cflags
140     # @USAGE: <flags>
141     # @DESCRIPTION:
142     # Add extra <flags> to the current CFLAGS.
143     append-cppflags() {
144     [[ -z $* ]] && return 0
145     export CFLAGS="${CFLAGS} $*"
146     return 0
147     }
148    
149 gengor 1.132 # @FUNCTION: append-cxxflags
150     # @USAGE: <flags>
151     # @DESCRIPTION:
152     # Add extra <flags> to the current CXXFLAGS.
153     append-cxxflags() {
154     [[ -z $* ]] && return 0
155     export CXXFLAGS="${CXXFLAGS} $*"
156     return 0
157     }
158    
159 dberkholz 1.124 # @FUNCTION: append-fflags
160     # @USAGE: <flags>
161     # @DESCRIPTION:
162     # Add extra <flags> to the current {F,FC}FLAGS.
163     append-fflags() {
164     [[ -z $* ]] && return 0
165     export FFLAGS="${FFLAGS} $*"
166     export FCFLAGS="${FCFLAGS} $*"
167     return 0
168     }
169    
170 vapier 1.121 # @FUNCTION: append-lfs-flags
171     # @DESCRIPTION:
172     # Add flags that enable Large File Support.
173 vapier 1.48 append-lfs-flags() {
174 vapier 1.93 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
175 vapier 1.118 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
176 vapier 1.48 }
177    
178 vapier 1.121 # @FUNCTION: append-flags
179     # @USAGE: <flags>
180     # @DESCRIPTION:
181 dberkholz 1.124 # Add extra <flags> to your current {C,CXX,F,FC}FLAGS.
182 vapier 1.18 append-flags() {
183 solar 1.82 [[ -z $* ]] && return 0
184 vapier 1.136 append-cflags "$@"
185     append-cppflags "$@"
186     append-fflags "$@"
187 vapier 1.28 return 0
188 verwilst 1.1 }
189    
190 vapier 1.121 # @FUNCTION: replace-flags
191     # @USAGE: <old> <new>
192     # @DESCRIPTION:
193     # Replace the <old> flag with <new>. Accepts shell globs for <old>.
194 vapier 1.18 replace-flags() {
195 vapier 1.93 [[ $# != 2 ]] \
196     && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
197     && die "replace-flags takes 2 arguments, not $#"
198    
199 mr_bones_ 1.83 local f fset
200 dirtyepic 1.125 declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS
201 agriffis 1.64
202 dberkholz 1.124 for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do
203 agriffis 1.64 # Looping over the flags instead of using a global
204     # substitution ensures that we're working with flag atoms.
205     # Otherwise globs like -O* have the potential to wipe out the
206     # list of flags.
207     for f in ${!fset}; do
208     # Note this should work with globs like -O*
209     [[ ${f} == ${1} ]] && f=${2}
210     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
211     done
212     eval export ${fset}=\${new_${fset}\[*]}
213     done
214    
215 vapier 1.28 return 0
216 danarmak 1.7 }
217    
218 vapier 1.121 # @FUNCTION: replace-cpu-flags
219     # @USAGE: <old> <new>
220     # @DESCRIPTION:
221     # Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu
222     # with flags that select the <new> cpu. Accepts shell globs for <old>.
223 vapier 1.37 replace-cpu-flags() {
224 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
225     while [ $# -gt 1 ] ; do
226 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
227 vapier 1.113 # ${oldcpu}) prior to calling replace-flags
228 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
229     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
230     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
231     shift
232 vapier 1.37 done
233     return 0
234     }
235    
236 vapier 1.113 _is_flagq() {
237 kevquinn 1.105 local x
238 vapier 1.113 for x in ${!1} ; do
239     [[ ${x} == $2 ]] && return 0
240 kevquinn 1.105 done
241     return 1
242     }
243    
244 vapier 1.121 # @FUNCTION: is-flagq
245     # @USAGE: <flag>
246     # @DESCRIPTION:
247 dberkholz 1.124 # Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs.
248 vapier 1.113 is-flagq() {
249     [[ -n $2 ]] && die "Usage: is-flag <flag>"
250 dberkholz 1.124 _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1
251 vapier 1.113 }
252    
253 vapier 1.121 # @FUNCTION: is-flag
254     # @USAGE: <flag>
255     # @DESCRIPTION:
256 dberkholz 1.124 # Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs.
257 danarmak 1.7 is-flag() {
258 vapier 1.113 is-flagq "$@" && echo true
259 kevquinn 1.105 }
260    
261 vapier 1.121 # @FUNCTION: is-ldflagq
262     # @USAGE: <flag>
263     # @DESCRIPTION:
264     # Returns shell true if <flag> is in LDFLAGS, else returns shell false. Accepts shell globs.
265 kevquinn 1.105 is-ldflagq() {
266 vapier 1.113 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
267     _is_flagq LDFLAGS $1
268 verwilst 1.1 }
269 azarah 1.8
270 vapier 1.121 # @FUNCTION: is-ldflag
271     # @USAGE: <flag>
272     # @DESCRIPTION:
273     # Echo's "true" if flag is set in LDFLAGS. Accepts shell globs.
274 kevquinn 1.105 is-ldflag() {
275 vapier 1.113 is-ldflagq "$@" && echo true
276 kevquinn 1.105 }
277    
278 vapier 1.121 # @FUNCTION: filter-mfpmath
279     # @USAGE: <math types>
280     # @DESCRIPTION:
281     # Remove specified math types from the fpmath flag. For example, if the user
282     # has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with
283     # -mfpmath=386.
284 vapier 1.36 filter-mfpmath() {
285 agriffis 1.58 local orig_mfpmath new_math prune_math
286    
287 vapier 1.36 # save the original -mfpmath flag
288 vapier 1.109 orig_mfpmath=$(get-flag -mfpmath)
289 vapier 1.36 # get the value of the current -mfpmath flag
290 vapier 1.109 new_math=$(get-flag mfpmath)
291     new_math=" ${new_math//,/ } "
292 vapier 1.36 # figure out which math values are to be removed
293 agriffis 1.58 prune_math=""
294 vapier 1.36 for prune_math in "$@" ; do
295 vapier 1.109 new_math=${new_math/ ${prune_math} / }
296 vapier 1.36 done
297 vapier 1.109 new_math=$(echo ${new_math})
298     new_math=${new_math// /,}
299 vapier 1.36
300 vapier 1.109 if [[ -z ${new_math} ]] ; then
301 vapier 1.36 # if we're removing all user specified math values are
302     # slated for removal, then we just filter the flag
303     filter-flags ${orig_mfpmath}
304     else
305     # if we only want to filter some of the user specified
306     # math values, then we replace the current flag
307     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
308     fi
309     return 0
310     }
311    
312 vapier 1.121 # @FUNCTION: strip-flags
313     # @DESCRIPTION:
314     # Strip C[XX]FLAGS of everything except known good/safe flags.
315 azarah 1.8 strip-flags() {
316 dberkholz 1.124 local x y flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS
317 agriffis 1.58
318 vapier 1.36 setup-allowed-flags
319    
320 azarah 1.8 local NEW_CFLAGS=""
321     local NEW_CXXFLAGS=""
322 dberkholz 1.124 local NEW_FFLAGS=""
323     local NEW_FCFLAGS=""
324 azarah 1.8
325 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
326 vapier 1.84 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
327 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
328     fi
329    
330 agriffis 1.58 set -f # disable pathname expansion
331 azarah 1.8
332 agriffis 1.58 for x in ${CFLAGS}; do
333     for y in ${ALLOWED_FLAGS}; do
334 lostlogic 1.14 flag=${x%%=*}
335 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
336 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
337     break
338 azarah 1.8 fi
339     done
340     done
341    
342 agriffis 1.58 for x in ${CXXFLAGS}; do
343     for y in ${ALLOWED_FLAGS}; do
344 lostlogic 1.14 flag=${x%%=*}
345 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
346 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
347     break
348 azarah 1.8 fi
349     done
350     done
351 azarah 1.30
352 dberkholz 1.124 for x in ${FFLAGS}; do
353     for y in ${ALLOWED_FLAGS}; do
354     flag=${x%%=*}
355     if [ "${flag%%${y}}" = "" ] ; then
356     NEW_FFLAGS="${NEW_FFLAGS} ${x}"
357     break
358     fi
359     done
360     done
361    
362     for x in ${FCFLAGS}; do
363     for y in ${ALLOWED_FLAGS}; do
364     flag=${x%%=*}
365     if [ "${flag%%${y}}" = "" ] ; then
366     NEW_FCFLAGS="${NEW_FCFLAGS} ${x}"
367     break
368     fi
369     done
370     done
371    
372 azarah 1.30 # In case we filtered out all optimization flags fallback to -O2
373     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
374     NEW_CFLAGS="${NEW_CFLAGS} -O2"
375     fi
376     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
377     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
378     fi
379 dberkholz 1.124 if [ "${FFLAGS/-O}" != "${FFLAGS}" -a "${NEW_FFLAGS/-O}" = "${NEW_FFLAGS}" ]; then
380     NEW_FFLAGS="${NEW_FFLAGS} -O2"
381     fi
382     if [ "${FCFLAGS/-O}" != "${FCFLAGS}" -a "${NEW_FCFLAGS/-O}" = "${NEW_FCFLAGS}" ]; then
383     NEW_FCFLAGS="${NEW_FCFLAGS} -O2"
384     fi
385 azarah 1.8
386 agriffis 1.58 set +f # re-enable pathname expansion
387 azarah 1.8
388     export CFLAGS="${NEW_CFLAGS}"
389     export CXXFLAGS="${NEW_CXXFLAGS}"
390 dberkholz 1.124 export FFLAGS="${NEW_FFLAGS}"
391     export FCFLAGS="${NEW_FCFLAGS}"
392 vapier 1.36 return 0
393 puggy 1.29 }
394    
395 azarah 1.96 test-flag-PROG() {
396     local comp=$1
397     local flags="$2"
398    
399     [[ -z ${comp} || -z ${flags} ]] && \
400     return 1
401    
402     local PROG=$(tc-get${comp})
403     ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
404     > /dev/null 2>&1
405     }
406    
407 vapier 1.121 # @FUNCTION: test-flag-CC
408     # @USAGE: <flag>
409     # @DESCRIPTION:
410     # Returns shell true if <flag> is supported by the C compiler, else returns shell false.
411 azarah 1.96 test-flag-CC() { test-flag-PROG "CC" "$1"; }
412    
413 vapier 1.121 # @FUNCTION: test-flag-CXX
414     # @USAGE: <flag>
415     # @DESCRIPTION:
416     # Returns shell true if <flag> is supported by the C++ compiler, else returns shell false.
417 azarah 1.96 test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
418    
419 dberkholz 1.124 # @FUNCTION: test-flag-F77
420     # @USAGE: <flag>
421     # @DESCRIPTION:
422     # Returns shell true if <flag> is supported by the Fortran 77 compiler, else returns shell false.
423     test-flag-F77() { test-flag-PROG "F77" "$1"; }
424    
425     # @FUNCTION: test-flag-FC
426     # @USAGE: <flag>
427     # @DESCRIPTION:
428     # Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false.
429     test-flag-FC() { test-flag-PROG "FC" "$1"; }
430    
431 azarah 1.99 test-flags-PROG() {
432     local comp=$1
433     local flags
434 azarah 1.96 local x
435 azarah 1.99
436     shift
437    
438 vapier 1.113 [[ -z ${comp} ]] && return 1
439 swegener 1.101
440 vapier 1.113 x=""
441 azarah 1.96 for x in "$@" ; do
442 vapier 1.113 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
443 azarah 1.96 done
444    
445 azarah 1.99 echo "${flags}"
446 azarah 1.96
447 azarah 1.99 # Just bail if we dont have any flags
448     [[ -n ${flags} ]]
449 azarah 1.96 }
450    
451 vapier 1.121 # @FUNCTION: test-flags-CC
452     # @USAGE: <flags>
453     # @DESCRIPTION:
454     # Returns shell true if <flags> are supported by the C compiler, else returns shell false.
455 azarah 1.99 test-flags-CC() { test-flags-PROG "CC" "$@"; }
456    
457 vapier 1.121 # @FUNCTION: test-flags-CXX
458     # @USAGE: <flags>
459     # @DESCRIPTION:
460     # Returns shell true if <flags> are supported by the C++ compiler, else returns shell false.
461 azarah 1.99 test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
462    
463 dberkholz 1.124 # @FUNCTION: test-flags-F77
464     # @USAGE: <flags>
465     # @DESCRIPTION:
466     # Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false.
467     test-flags-F77() { test-flags-PROG "F77" "$@"; }
468    
469     # @FUNCTION: test-flags-FC
470     # @USAGE: <flags>
471     # @DESCRIPTION:
472     # Returns shell true if <flags> are supported by the Fortran 90 compiler, else returns shell false.
473     test-flags-FC() { test-flags-PROG "FC" "$@"; }
474    
475 vapier 1.121 # @FUNCTION: test-flags
476     # @USAGE: <flags>
477     # @DESCRIPTION:
478 azarah 1.99 # Short-hand that should hopefully work for both C and C++ compiler, but
479 azarah 1.100 # its really only present due to the append-flags() abomination.
480 azarah 1.99 test-flags() { test-flags-CC "$@"; }
481    
482 vapier 1.121 # @FUNCTION: test_flag
483     # @DESCRIPTION:
484     # DEPRICIATED, use test-flags()
485 vapier 1.36 test_flag() {
486 kevquinn 1.104 ewarn "test_flag: deprecated, please use test-flags()!" >&2
487 azarah 1.96
488 azarah 1.99 test-flags-CC "$@"
489 puggy 1.29 }
490    
491 vapier 1.121 # @FUNCTION: test_version_info
492     # @USAGE: <version>
493     # @DESCRIPTION:
494     # Returns shell true if the current C compiler version matches <version>, else returns shell false.
495     # Accepts shell globs.
496 agriffis 1.58 test_version_info() {
497 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
498 agriffis 1.58 return 0
499     else
500     return 1
501     fi
502     }
503    
504 vapier 1.121 # @FUNCTION: strip-unsupported-flags
505     # @DESCRIPTION:
506 dberkholz 1.124 # Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain.
507 puggy 1.29 strip-unsupported-flags() {
508 vapier 1.113 export CFLAGS=$(test-flags-CC ${CFLAGS})
509     export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
510 dberkholz 1.124 export FFLAGS=$(test-flags-F77 ${FFLAGS})
511     export FCFLAGS=$(test-flags-FC ${FCFLAGS})
512 azarah 1.8 }
513    
514 vapier 1.121 # @FUNCTION: get-flag
515     # @USAGE: <flag>
516     # @DESCRIPTION:
517     # Find and echo the value for a particular flag. Accepts shell globs.
518 vapier 1.10 get-flag() {
519 agriffis 1.58 local f findflag="$1"
520    
521 vapier 1.36 # this code looks a little flaky but seems to work for
522     # everything we want ...
523     # for example, if CFLAGS="-march=i686":
524 agriffis 1.58 # `get-flag -march` == "-march=i686"
525     # `get-flag march` == "i686"
526 dberkholz 1.124 for f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do
527 vapier 1.10 if [ "${f/${findflag}}" != "${f}" ] ; then
528 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
529 vapier 1.28 return 0
530 vapier 1.10 fi
531     done
532 vapier 1.28 return 1
533 joker 1.16 }
534    
535 vapier 1.121 # @FUNCTION: has_hardened
536     # @DESCRIPTION:
537 kevquinn 1.92 # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
538 solar 1.53 has_hardened() {
539 kevquinn 1.104 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
540 swegener 1.101
541 lv 1.69 test_version_info Hardened && return 0
542 azarah 1.96 # The specs file wont exist unless gcc has GCC_SPECS support
543     [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
544 solar 1.53 }
545    
546 vapier 1.121 # @FUNCTION: has_pic
547     # @DESCRIPTION:
548 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
549 solar 1.81 # indicate whether PIC is set
550 tseng 1.42 has_pic() {
551 kevquinn 1.104 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
552 swegener 1.101
553 azarah 1.96 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
554 kevquinn 1.105 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
555     gcc-specs-pie
556 tseng 1.42 }
557    
558 vapier 1.121 # @FUNCTION: has_pie
559     # @DESCRIPTION:
560 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
561 solar 1.81 # indicate whether PIE is set
562 mr_bones_ 1.83 has_pie() {
563 kevquinn 1.104 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
564 swegener 1.101
565 azarah 1.96 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
566 kevquinn 1.105 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
567     gcc-specs-pie
568 tseng 1.42 }
569 mr_bones_ 1.83
570 vapier 1.121 # @FUNCTION: has_ssp_all
571     # @DESCRIPTION:
572 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
573 solar 1.86 # indicate whether code for SSP is being generated for all functions
574     has_ssp_all() {
575 kevquinn 1.104 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
576 swegener 1.101
577 solar 1.86 # note; this matches only -fstack-protector-all
578 azarah 1.96 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
579     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
580 gengor 1.130 gcc-specs-ssp-to-all
581 solar 1.86 }
582    
583 vapier 1.121 # @FUNCTION: has_ssp
584     # @DESCRIPTION:
585 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
586 solar 1.81 # indicate whether code for SSP is being generated
587 tseng 1.42 has_ssp() {
588 kevquinn 1.104 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
589 swegener 1.101
590 solar 1.81 # note; this matches both -fstack-protector and -fstack-protector-all
591 azarah 1.96 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
592     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
593     gcc-specs-ssp
594 tseng 1.42 }
595    
596 vapier 1.121 # @FUNCTION: has_m64
597     # @DESCRIPTION:
598     # This doesn't test if the flag is accepted, it tests if the flag actually
599     # WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works
600     # return code is 0, else the return code is 1.
601 lv 1.56 has_m64() {
602 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
603     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
604     # please dont replace this function with test_flag in some future
605     # clean-up!
606 swegener 1.101
607 vapier 1.72 local temp="$(emktemp)"
608 azarah 1.96 echo "int main() { return(0); }" > "${temp}".c
609 kugelfang 1.74 MY_CC=$(tc-getCC)
610 azarah 1.96 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
611 vapier 1.72 local ret=$?
612 azarah 1.96 rm -f "${temp}".c
613     [[ ${ret} != 1 ]] && return 0
614 lv 1.62 return 1
615 lv 1.56 }
616    
617 vapier 1.121 # @FUNCTION: has_m32
618     # @DESCRIPTION:
619     # This doesn't test if the flag is accepted, it tests if the flag actually
620     # WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return
621     # code is 0, else return code is 1.
622 lv 1.56 has_m32() {
623 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
624     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
625     # please dont replace this function with test_flag in some future
626     # clean-up!
627 eradicator 1.80
628     [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
629    
630 vapier 1.95 local temp=$(emktemp)
631     echo "int main() { return(0); }" > "${temp}".c
632 kugelfang 1.74 MY_CC=$(tc-getCC)
633 vapier 1.95 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
634 vapier 1.72 local ret=$?
635 vapier 1.95 rm -f "${temp}".c
636 azarah 1.96 [[ ${ret} != 1 ]] && return 0
637 lv 1.62 return 1
638 lv 1.56 }
639    
640 vapier 1.121 # @FUNCTION: replace-sparc64-flags
641     # @DESCRIPTION:
642     # Sets mcpu to v8 and uses the original value as mtune if none specified.
643 vapier 1.18 replace-sparc64-flags() {
644 fmccor 1.98 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
645 joker 1.16
646 mr_bones_ 1.83 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
647 agriffis 1.58 for x in ${SPARC64_CPUS}; do
648 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
649     done
650 mr_bones_ 1.83 else
651 swegener 1.111 for x in ${SPARC64_CPUS}; do
652 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
653     done
654     fi
655 mr_bones_ 1.83
656     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
657 agriffis 1.58 for x in ${SPARC64_CPUS}; do
658 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
659     done
660     else
661 swegener 1.111 for x in ${SPARC64_CPUS}; do
662 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
663     done
664     fi
665 vapier 1.59
666     export CFLAGS CXXFLAGS
667 solar 1.27 }
668    
669 vapier 1.121 # @FUNCTION: append-ldflags
670     # @USAGE: <flags>
671     # @DESCRIPTION:
672     # Add extra <flags> to the current LDFLAGS.
673 solar 1.27 append-ldflags() {
674 kevquinn 1.105 [[ -z $* ]] && return 0
675 flameeyes 1.123 local flag
676     for flag in "$@"; do
677     [[ ${flag} == -l* ]] && \
678     ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS"
679     done
680    
681 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
682 vapier 1.28 return 0
683 solar 1.27 }
684    
685 vapier 1.121 # @FUNCTION: filter-ldflags
686     # @USAGE: <flags>
687     # @DESCRIPTION:
688     # Remove particular <flags> from LDFLAGS. Accepts shell globs.
689 solar 1.41 filter-ldflags() {
690 kevquinn 1.105 _filter-var LDFLAGS "$@"
691 solar 1.41 return 0
692     }
693    
694 vapier 1.121 # @FUNCTION: raw-ldflags
695     # @USAGE: <flags>
696     # @DESCRIPTION:
697 kevquinn 1.105 # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
698     # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
699     # to gcc where it needs the '-Wl,'.
700 vapier 1.102 raw-ldflags() {
701     local x input="$@"
702     [[ -z ${input} ]] && input=${LDFLAGS}
703     set --
704     for x in ${input} ; do
705 vapier 1.103 x=${x#-Wl,}
706     set -- "$@" ${x//,/ }
707 vapier 1.102 done
708     echo "$@"
709     }
710    
711 vapier 1.121 # @FUNCTION: bindnow-flags
712     # @RETURN: Returns the flags to enable "now" binding in the current selected linker.
713     # @DESCRIPTION:
714     # DEPRECATED - Gets the flags needed for "NOW" binding
715 flameeyes 1.94 bindnow-flags() {
716 vapier 1.129 ewarn "QA: stop using the bindnow-flags function ... simply drop it from your ebuild"
717 flameeyes 1.94 }
718 vapier 1.113
719    
720     # Some tests for when we screw with things and want to make
721     # sure we didn't break anything
722     #TESTS() {
723     # CFLAGS="-a -b -c=1"
724     # CXXFLAGS="-x -y -z=2"
725     # LDFLAGS="-l -m -n=3"
726     #
727     # die() { exit 1; }
728     # (is-flag 1 2 3) && die
729     # (is-ldflag 1 2 3) && die
730     #
731     # is-flagq -l && die
732     # is-ldflagq -a && die
733     # is-flagq -a || die
734     # is-flagq -x || die
735     # is-ldflagq -n=* || die
736     # is-ldflagq -n && die
737     #
738     # strip-unsupported-flags
739     # [[ ${CFLAGS} == "-c=1" ]] || die
740     # [[ ${CXXFLAGS} == "-y -z=2" ]] || die
741     #
742     # echo "All tests pass"
743     #}
744     #TESTS

  ViewVC Help
Powered by ViewVC 1.1.20