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

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

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1.133 - (hide annotations) (download)
Sat Apr 4 17:57:54 2009 UTC (5 years, 5 months ago) by grobian
Branch: MAIN
Changes since 1.132: +7 -1 lines
backport fix for x86-macos in filter-flags from Prefix

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 grobian 1.133 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.132 2009/01/21 00:42:20 gengor 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="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \
44 solar 1.127 -fno-strict-aliasing -fno-bounds-checking -fstrict-overflow"
45 vapier 1.87 ALLOWED_FLAGS="${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 grobian 1.133
56     # killing these two on OSX/Intel will disable SSE, resulting in failing
57     # compilations, as the headers expect SSE to be enabled (Apple knows what
58     # hardware they run on afterall, don't they?)
59     [[ ${CHOST} == i?86-apple-darwin* ]] \
60     && ALLOWED_FLAGS="${ALLOWED_FLAGS} -march=prescott -march=nocona"
61 vapier 1.36
62 dberkholz 1.124 # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing
63 vapier 1.36 # NOTE: currently -Os have issues with gcc3 and K6* arch's
64 vapier 1.106 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
65 vapier 1.36 return 0
66 aliz 1.24 }
67 verwilst 1.13
68 kevquinn 1.105 # inverted filters for hardened compiler. This is trying to unpick
69     # the hardened compiler defaults.
70     _filter-hardened() {
71     local f
72     for f in "$@" ; do
73     case "${f}" in
74     # Ideally we should only concern ourselves with PIE flags,
75     # not -fPIC or -fpic, but too many places filter -fPIC without
76     # thinking about -fPIE.
77     -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
78     gcc-specs-pie || continue
79     is-flagq -nopie || append-flags -nopie;;
80     -fstack-protector)
81     gcc-specs-ssp || continue
82 gengor 1.131 is-flagq -fno-stack-protector || append-flags $(test-flags -fno-stack-protector);;
83 kevquinn 1.105 -fstack-protector-all)
84     gcc-specs-ssp-to-all || continue
85 gengor 1.131 is-flagq -fno-stack-protector-all || append-flags $(test-flags -fno-stack-protector-all);;
86 gengor 1.128 -fno-strict-overflow)
87     gcc-specs-nostrict || continue
88 gengor 1.131 is-flagq -fstrict-overflow || append-flags $(test-flags -fstrict-overflow);;
89 solar 1.27 esac
90     done
91 kevquinn 1.105 }
92    
93     # Remove occurrences of strings from variable given in $1
94     # Strings removed are matched as globs, so for example
95     # '-O*' would remove -O1, -O2 etc.
96     _filter-var() {
97     local f x VAR VAL
98     declare -a new
99 vapier 1.36
100 kevquinn 1.105 VAR=$1
101     shift
102     eval VAL=\${${VAR}}
103     for f in ${VAL}; do
104     for x in "$@"; do
105     # Note this should work with globs like -O*
106     [[ ${f} == ${x} ]] && continue 2
107 agriffis 1.61 done
108 kevquinn 1.105 eval new\[\${\#new\[@]}]=\${f}
109 verwilst 1.1 done
110 kevquinn 1.105 eval export ${VAR}=\${new\[*]}
111     }
112 agriffis 1.61
113 vapier 1.121 # @FUNCTION: filter-flags
114     # @USAGE: <flags>
115     # @DESCRIPTION:
116 dberkholz 1.124 # Remove particular <flags> from {C,CPP,CXX,F,FC}FLAGS. Accepts shell globs.
117 kevquinn 1.105 filter-flags() {
118     _filter-hardened "$@"
119     _filter-var CFLAGS "$@"
120 vapier 1.118 _filter-var CPPFLAGS "$@"
121 kevquinn 1.105 _filter-var CXXFLAGS "$@"
122 dberkholz 1.124 _filter-var FFLAGS "$@"
123     _filter-var FCFLAGS "$@"
124 vapier 1.36 return 0
125 verwilst 1.2 }
126    
127 vapier 1.121 # @FUNCTION: filter-lfs-flags
128     # @DESCRIPTION:
129     # Remove flags that enable Large File Support.
130 vapier 1.40 filter-lfs-flags() {
131 vapier 1.93 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
132 vapier 1.40 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
133     }
134    
135 vapier 1.121 # @FUNCTION: append-cppflags
136     # @USAGE: <flags>
137     # @DESCRIPTION:
138     # Add extra <flags> to the current CPPFLAGS.
139 vapier 1.118 append-cppflags() {
140     [[ -z $* ]] && return 0
141     export CPPFLAGS="${CPPFLAGS} $*"
142     return 0
143     }
144    
145 gengor 1.132 # @FUNCTION: append-cxxflags
146     # @USAGE: <flags>
147     # @DESCRIPTION:
148     # Add extra <flags> to the current CXXFLAGS.
149     append-cxxflags() {
150     [[ -z $* ]] && return 0
151     export CXXFLAGS="${CXXFLAGS} $*"
152     return 0
153     }
154    
155 dberkholz 1.124 # @FUNCTION: append-fflags
156     # @USAGE: <flags>
157     # @DESCRIPTION:
158     # Add extra <flags> to the current {F,FC}FLAGS.
159     append-fflags() {
160     [[ -z $* ]] && return 0
161     export FFLAGS="${FFLAGS} $*"
162     export FCFLAGS="${FCFLAGS} $*"
163     return 0
164     }
165    
166 vapier 1.121 # @FUNCTION: append-lfs-flags
167     # @DESCRIPTION:
168     # Add flags that enable Large File Support.
169 vapier 1.48 append-lfs-flags() {
170 vapier 1.93 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
171 vapier 1.118 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
172 vapier 1.48 }
173    
174 vapier 1.121 # @FUNCTION: append-flags
175     # @USAGE: <flags>
176     # @DESCRIPTION:
177 dberkholz 1.124 # Add extra <flags> to your current {C,CXX,F,FC}FLAGS.
178 vapier 1.18 append-flags() {
179 solar 1.82 [[ -z $* ]] && return 0
180 agriffis 1.58 export CFLAGS="${CFLAGS} $*"
181     export CXXFLAGS="${CXXFLAGS} $*"
182 dberkholz 1.124 export FFLAGS="${FFLAGS} $*"
183     export FCFLAGS="${FCFLAGS} $*"
184 vapier 1.28 return 0
185 verwilst 1.1 }
186    
187 vapier 1.121 # @FUNCTION: replace-flags
188     # @USAGE: <old> <new>
189     # @DESCRIPTION:
190     # Replace the <old> flag with <new>. Accepts shell globs for <old>.
191 vapier 1.18 replace-flags() {
192 vapier 1.93 [[ $# != 2 ]] \
193     && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
194     && die "replace-flags takes 2 arguments, not $#"
195    
196 mr_bones_ 1.83 local f fset
197 dirtyepic 1.125 declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS
198 agriffis 1.64
199 dberkholz 1.124 for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do
200 agriffis 1.64 # Looping over the flags instead of using a global
201     # substitution ensures that we're working with flag atoms.
202     # Otherwise globs like -O* have the potential to wipe out the
203     # list of flags.
204     for f in ${!fset}; do
205     # Note this should work with globs like -O*
206     [[ ${f} == ${1} ]] && f=${2}
207     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
208     done
209     eval export ${fset}=\${new_${fset}\[*]}
210     done
211    
212 vapier 1.28 return 0
213 danarmak 1.7 }
214    
215 vapier 1.121 # @FUNCTION: replace-cpu-flags
216     # @USAGE: <old> <new>
217     # @DESCRIPTION:
218     # Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu
219     # with flags that select the <new> cpu. Accepts shell globs for <old>.
220 vapier 1.37 replace-cpu-flags() {
221 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
222     while [ $# -gt 1 ] ; do
223 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
224 vapier 1.113 # ${oldcpu}) prior to calling replace-flags
225 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
226     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
227     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
228     shift
229 vapier 1.37 done
230     return 0
231     }
232    
233 vapier 1.113 _is_flagq() {
234 kevquinn 1.105 local x
235 vapier 1.113 for x in ${!1} ; do
236     [[ ${x} == $2 ]] && return 0
237 kevquinn 1.105 done
238     return 1
239     }
240    
241 vapier 1.121 # @FUNCTION: is-flagq
242     # @USAGE: <flag>
243     # @DESCRIPTION:
244 dberkholz 1.124 # Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs.
245 vapier 1.113 is-flagq() {
246     [[ -n $2 ]] && die "Usage: is-flag <flag>"
247 dberkholz 1.124 _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1
248 vapier 1.113 }
249    
250 vapier 1.121 # @FUNCTION: is-flag
251     # @USAGE: <flag>
252     # @DESCRIPTION:
253 dberkholz 1.124 # Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs.
254 danarmak 1.7 is-flag() {
255 vapier 1.113 is-flagq "$@" && echo true
256 kevquinn 1.105 }
257    
258 vapier 1.121 # @FUNCTION: is-ldflagq
259     # @USAGE: <flag>
260     # @DESCRIPTION:
261     # Returns shell true if <flag> is in LDFLAGS, else returns shell false. Accepts shell globs.
262 kevquinn 1.105 is-ldflagq() {
263 vapier 1.113 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
264     _is_flagq LDFLAGS $1
265 verwilst 1.1 }
266 azarah 1.8
267 vapier 1.121 # @FUNCTION: is-ldflag
268     # @USAGE: <flag>
269     # @DESCRIPTION:
270     # Echo's "true" if flag is set in LDFLAGS. Accepts shell globs.
271 kevquinn 1.105 is-ldflag() {
272 vapier 1.113 is-ldflagq "$@" && echo true
273 kevquinn 1.105 }
274    
275 vapier 1.121 # @FUNCTION: filter-mfpmath
276     # @USAGE: <math types>
277     # @DESCRIPTION:
278     # Remove specified math types from the fpmath flag. For example, if the user
279     # has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with
280     # -mfpmath=386.
281 vapier 1.36 filter-mfpmath() {
282 agriffis 1.58 local orig_mfpmath new_math prune_math
283    
284 vapier 1.36 # save the original -mfpmath flag
285 vapier 1.109 orig_mfpmath=$(get-flag -mfpmath)
286 vapier 1.36 # get the value of the current -mfpmath flag
287 vapier 1.109 new_math=$(get-flag mfpmath)
288     new_math=" ${new_math//,/ } "
289 vapier 1.36 # figure out which math values are to be removed
290 agriffis 1.58 prune_math=""
291 vapier 1.36 for prune_math in "$@" ; do
292 vapier 1.109 new_math=${new_math/ ${prune_math} / }
293 vapier 1.36 done
294 vapier 1.109 new_math=$(echo ${new_math})
295     new_math=${new_math// /,}
296 vapier 1.36
297 vapier 1.109 if [[ -z ${new_math} ]] ; then
298 vapier 1.36 # if we're removing all user specified math values are
299     # slated for removal, then we just filter the flag
300     filter-flags ${orig_mfpmath}
301     else
302     # if we only want to filter some of the user specified
303     # math values, then we replace the current flag
304     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
305     fi
306     return 0
307     }
308    
309 vapier 1.121 # @FUNCTION: strip-flags
310     # @DESCRIPTION:
311     # Strip C[XX]FLAGS of everything except known good/safe flags.
312 azarah 1.8 strip-flags() {
313 dberkholz 1.124 local x y flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS
314 agriffis 1.58
315 vapier 1.36 setup-allowed-flags
316    
317 azarah 1.8 local NEW_CFLAGS=""
318     local NEW_CXXFLAGS=""
319 dberkholz 1.124 local NEW_FFLAGS=""
320     local NEW_FCFLAGS=""
321 azarah 1.8
322 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
323 vapier 1.84 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
324 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
325     fi
326    
327 agriffis 1.58 set -f # disable pathname expansion
328 azarah 1.8
329 agriffis 1.58 for x in ${CFLAGS}; do
330     for y in ${ALLOWED_FLAGS}; do
331 lostlogic 1.14 flag=${x%%=*}
332 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
333 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
334     break
335 azarah 1.8 fi
336     done
337     done
338    
339 agriffis 1.58 for x in ${CXXFLAGS}; do
340     for y in ${ALLOWED_FLAGS}; do
341 lostlogic 1.14 flag=${x%%=*}
342 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
343 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
344     break
345 azarah 1.8 fi
346     done
347     done
348 azarah 1.30
349 dberkholz 1.124 for x in ${FFLAGS}; do
350     for y in ${ALLOWED_FLAGS}; do
351     flag=${x%%=*}
352     if [ "${flag%%${y}}" = "" ] ; then
353     NEW_FFLAGS="${NEW_FFLAGS} ${x}"
354     break
355     fi
356     done
357     done
358    
359     for x in ${FCFLAGS}; do
360     for y in ${ALLOWED_FLAGS}; do
361     flag=${x%%=*}
362     if [ "${flag%%${y}}" = "" ] ; then
363     NEW_FCFLAGS="${NEW_FCFLAGS} ${x}"
364     break
365     fi
366     done
367     done
368    
369 azarah 1.30 # In case we filtered out all optimization flags fallback to -O2
370     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
371     NEW_CFLAGS="${NEW_CFLAGS} -O2"
372     fi
373     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
374     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
375     fi
376 dberkholz 1.124 if [ "${FFLAGS/-O}" != "${FFLAGS}" -a "${NEW_FFLAGS/-O}" = "${NEW_FFLAGS}" ]; then
377     NEW_FFLAGS="${NEW_FFLAGS} -O2"
378     fi
379     if [ "${FCFLAGS/-O}" != "${FCFLAGS}" -a "${NEW_FCFLAGS/-O}" = "${NEW_FCFLAGS}" ]; then
380     NEW_FCFLAGS="${NEW_FCFLAGS} -O2"
381     fi
382 azarah 1.8
383 agriffis 1.58 set +f # re-enable pathname expansion
384 azarah 1.8
385     export CFLAGS="${NEW_CFLAGS}"
386     export CXXFLAGS="${NEW_CXXFLAGS}"
387 dberkholz 1.124 export FFLAGS="${NEW_FFLAGS}"
388     export FCFLAGS="${NEW_FCFLAGS}"
389 vapier 1.36 return 0
390 puggy 1.29 }
391    
392 azarah 1.96 test-flag-PROG() {
393     local comp=$1
394     local flags="$2"
395    
396     [[ -z ${comp} || -z ${flags} ]] && \
397     return 1
398    
399     local PROG=$(tc-get${comp})
400     ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
401     > /dev/null 2>&1
402     }
403    
404 vapier 1.121 # @FUNCTION: test-flag-CC
405     # @USAGE: <flag>
406     # @DESCRIPTION:
407     # Returns shell true if <flag> is supported by the C compiler, else returns shell false.
408 azarah 1.96 test-flag-CC() { test-flag-PROG "CC" "$1"; }
409    
410 vapier 1.121 # @FUNCTION: test-flag-CXX
411     # @USAGE: <flag>
412     # @DESCRIPTION:
413     # Returns shell true if <flag> is supported by the C++ compiler, else returns shell false.
414 azarah 1.96 test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
415    
416 dberkholz 1.124 # @FUNCTION: test-flag-F77
417     # @USAGE: <flag>
418     # @DESCRIPTION:
419     # Returns shell true if <flag> is supported by the Fortran 77 compiler, else returns shell false.
420     test-flag-F77() { test-flag-PROG "F77" "$1"; }
421    
422     # @FUNCTION: test-flag-FC
423     # @USAGE: <flag>
424     # @DESCRIPTION:
425     # Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false.
426     test-flag-FC() { test-flag-PROG "FC" "$1"; }
427    
428 azarah 1.99 test-flags-PROG() {
429     local comp=$1
430     local flags
431 azarah 1.96 local x
432 azarah 1.99
433     shift
434    
435 vapier 1.113 [[ -z ${comp} ]] && return 1
436 swegener 1.101
437 vapier 1.113 x=""
438 azarah 1.96 for x in "$@" ; do
439 vapier 1.113 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
440 azarah 1.96 done
441    
442 azarah 1.99 echo "${flags}"
443 azarah 1.96
444 azarah 1.99 # Just bail if we dont have any flags
445     [[ -n ${flags} ]]
446 azarah 1.96 }
447    
448 vapier 1.121 # @FUNCTION: test-flags-CC
449     # @USAGE: <flags>
450     # @DESCRIPTION:
451     # Returns shell true if <flags> are supported by the C compiler, else returns shell false.
452 azarah 1.99 test-flags-CC() { test-flags-PROG "CC" "$@"; }
453    
454 vapier 1.121 # @FUNCTION: test-flags-CXX
455     # @USAGE: <flags>
456     # @DESCRIPTION:
457     # Returns shell true if <flags> are supported by the C++ compiler, else returns shell false.
458 azarah 1.99 test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
459    
460 dberkholz 1.124 # @FUNCTION: test-flags-F77
461     # @USAGE: <flags>
462     # @DESCRIPTION:
463     # Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false.
464     test-flags-F77() { test-flags-PROG "F77" "$@"; }
465    
466     # @FUNCTION: test-flags-FC
467     # @USAGE: <flags>
468     # @DESCRIPTION:
469     # Returns shell true if <flags> are supported by the Fortran 90 compiler, else returns shell false.
470     test-flags-FC() { test-flags-PROG "FC" "$@"; }
471    
472 vapier 1.121 # @FUNCTION: test-flags
473     # @USAGE: <flags>
474     # @DESCRIPTION:
475 azarah 1.99 # Short-hand that should hopefully work for both C and C++ compiler, but
476 azarah 1.100 # its really only present due to the append-flags() abomination.
477 azarah 1.99 test-flags() { test-flags-CC "$@"; }
478    
479 vapier 1.121 # @FUNCTION: test_flag
480     # @DESCRIPTION:
481     # DEPRICIATED, use test-flags()
482 vapier 1.36 test_flag() {
483 kevquinn 1.104 ewarn "test_flag: deprecated, please use test-flags()!" >&2
484 azarah 1.96
485 azarah 1.99 test-flags-CC "$@"
486 puggy 1.29 }
487    
488 vapier 1.121 # @FUNCTION: test_version_info
489     # @USAGE: <version>
490     # @DESCRIPTION:
491     # Returns shell true if the current C compiler version matches <version>, else returns shell false.
492     # Accepts shell globs.
493 agriffis 1.58 test_version_info() {
494 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
495 agriffis 1.58 return 0
496     else
497     return 1
498     fi
499     }
500    
501 vapier 1.121 # @FUNCTION: strip-unsupported-flags
502     # @DESCRIPTION:
503 dberkholz 1.124 # Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain.
504 puggy 1.29 strip-unsupported-flags() {
505 vapier 1.113 export CFLAGS=$(test-flags-CC ${CFLAGS})
506     export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
507 dberkholz 1.124 export FFLAGS=$(test-flags-F77 ${FFLAGS})
508     export FCFLAGS=$(test-flags-FC ${FCFLAGS})
509 azarah 1.8 }
510    
511 vapier 1.121 # @FUNCTION: get-flag
512     # @USAGE: <flag>
513     # @DESCRIPTION:
514     # Find and echo the value for a particular flag. Accepts shell globs.
515 vapier 1.10 get-flag() {
516 agriffis 1.58 local f findflag="$1"
517    
518 vapier 1.36 # this code looks a little flaky but seems to work for
519     # everything we want ...
520     # for example, if CFLAGS="-march=i686":
521 agriffis 1.58 # `get-flag -march` == "-march=i686"
522     # `get-flag march` == "i686"
523 dberkholz 1.124 for f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do
524 vapier 1.10 if [ "${f/${findflag}}" != "${f}" ] ; then
525 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
526 vapier 1.28 return 0
527 vapier 1.10 fi
528     done
529 vapier 1.28 return 1
530 joker 1.16 }
531    
532 vapier 1.121 # @FUNCTION: has_hardened
533     # @DESCRIPTION:
534 kevquinn 1.92 # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
535 solar 1.53 has_hardened() {
536 kevquinn 1.104 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
537 swegener 1.101
538 lv 1.69 test_version_info Hardened && return 0
539 azarah 1.96 # The specs file wont exist unless gcc has GCC_SPECS support
540     [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
541 solar 1.53 }
542    
543 vapier 1.121 # @FUNCTION: has_pic
544     # @DESCRIPTION:
545 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
546 solar 1.81 # indicate whether PIC is set
547 tseng 1.42 has_pic() {
548 kevquinn 1.104 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
549 swegener 1.101
550 azarah 1.96 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
551 kevquinn 1.105 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
552     gcc-specs-pie
553 tseng 1.42 }
554    
555 vapier 1.121 # @FUNCTION: has_pie
556     # @DESCRIPTION:
557 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
558 solar 1.81 # indicate whether PIE is set
559 mr_bones_ 1.83 has_pie() {
560 kevquinn 1.104 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
561 swegener 1.101
562 azarah 1.96 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
563 kevquinn 1.105 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
564     gcc-specs-pie
565 tseng 1.42 }
566 mr_bones_ 1.83
567 vapier 1.121 # @FUNCTION: has_ssp_all
568     # @DESCRIPTION:
569 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
570 solar 1.86 # indicate whether code for SSP is being generated for all functions
571     has_ssp_all() {
572 kevquinn 1.104 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
573 swegener 1.101
574 solar 1.86 # note; this matches only -fstack-protector-all
575 azarah 1.96 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
576     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
577 gengor 1.130 gcc-specs-ssp-to-all
578 solar 1.86 }
579    
580 vapier 1.121 # @FUNCTION: has_ssp
581     # @DESCRIPTION:
582 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
583 solar 1.81 # indicate whether code for SSP is being generated
584 tseng 1.42 has_ssp() {
585 kevquinn 1.104 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
586 swegener 1.101
587 solar 1.81 # note; this matches both -fstack-protector and -fstack-protector-all
588 azarah 1.96 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
589     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
590     gcc-specs-ssp
591 tseng 1.42 }
592    
593 vapier 1.121 # @FUNCTION: has_m64
594     # @DESCRIPTION:
595     # This doesn't test if the flag is accepted, it tests if the flag actually
596     # WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works
597     # return code is 0, else the return code is 1.
598 lv 1.56 has_m64() {
599 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
600     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
601     # please dont replace this function with test_flag in some future
602     # clean-up!
603 swegener 1.101
604 vapier 1.72 local temp="$(emktemp)"
605 azarah 1.96 echo "int main() { return(0); }" > "${temp}".c
606 kugelfang 1.74 MY_CC=$(tc-getCC)
607 azarah 1.96 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
608 vapier 1.72 local ret=$?
609 azarah 1.96 rm -f "${temp}".c
610     [[ ${ret} != 1 ]] && return 0
611 lv 1.62 return 1
612 lv 1.56 }
613    
614 vapier 1.121 # @FUNCTION: has_m32
615     # @DESCRIPTION:
616     # This doesn't test if the flag is accepted, it tests if the flag actually
617     # WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return
618     # code is 0, else return code is 1.
619 lv 1.56 has_m32() {
620 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
621     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
622     # please dont replace this function with test_flag in some future
623     # clean-up!
624 eradicator 1.80
625     [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
626    
627 vapier 1.95 local temp=$(emktemp)
628     echo "int main() { return(0); }" > "${temp}".c
629 kugelfang 1.74 MY_CC=$(tc-getCC)
630 vapier 1.95 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
631 vapier 1.72 local ret=$?
632 vapier 1.95 rm -f "${temp}".c
633 azarah 1.96 [[ ${ret} != 1 ]] && return 0
634 lv 1.62 return 1
635 lv 1.56 }
636    
637 vapier 1.121 # @FUNCTION: replace-sparc64-flags
638     # @DESCRIPTION:
639     # Sets mcpu to v8 and uses the original value as mtune if none specified.
640 vapier 1.18 replace-sparc64-flags() {
641 fmccor 1.98 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
642 joker 1.16
643 mr_bones_ 1.83 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
644 agriffis 1.58 for x in ${SPARC64_CPUS}; do
645 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
646     done
647 mr_bones_ 1.83 else
648 swegener 1.111 for x in ${SPARC64_CPUS}; do
649 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
650     done
651     fi
652 mr_bones_ 1.83
653     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
654 agriffis 1.58 for x in ${SPARC64_CPUS}; do
655 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
656     done
657     else
658 swegener 1.111 for x in ${SPARC64_CPUS}; do
659 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
660     done
661     fi
662 vapier 1.59
663     export CFLAGS CXXFLAGS
664 solar 1.27 }
665    
666 vapier 1.121 # @FUNCTION: append-ldflags
667     # @USAGE: <flags>
668     # @DESCRIPTION:
669     # Add extra <flags> to the current LDFLAGS.
670 solar 1.27 append-ldflags() {
671 kevquinn 1.105 [[ -z $* ]] && return 0
672 flameeyes 1.123 local flag
673     for flag in "$@"; do
674     [[ ${flag} == -l* ]] && \
675     ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS"
676     done
677    
678 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
679 vapier 1.28 return 0
680 solar 1.27 }
681    
682 vapier 1.121 # @FUNCTION: filter-ldflags
683     # @USAGE: <flags>
684     # @DESCRIPTION:
685     # Remove particular <flags> from LDFLAGS. Accepts shell globs.
686 solar 1.41 filter-ldflags() {
687 kevquinn 1.105 _filter-var LDFLAGS "$@"
688 solar 1.41 return 0
689     }
690    
691 vapier 1.121 # @FUNCTION: raw-ldflags
692     # @USAGE: <flags>
693     # @DESCRIPTION:
694 kevquinn 1.105 # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
695     # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
696     # to gcc where it needs the '-Wl,'.
697 vapier 1.102 raw-ldflags() {
698     local x input="$@"
699     [[ -z ${input} ]] && input=${LDFLAGS}
700     set --
701     for x in ${input} ; do
702 vapier 1.103 x=${x#-Wl,}
703     set -- "$@" ${x//,/ }
704 vapier 1.102 done
705     echo "$@"
706     }
707    
708 vapier 1.121 # @FUNCTION: bindnow-flags
709     # @RETURN: Returns the flags to enable "now" binding in the current selected linker.
710     # @DESCRIPTION:
711     # DEPRECATED - Gets the flags needed for "NOW" binding
712 flameeyes 1.94 bindnow-flags() {
713 vapier 1.129 ewarn "QA: stop using the bindnow-flags function ... simply drop it from your ebuild"
714 flameeyes 1.94 }
715 vapier 1.113
716    
717     # Some tests for when we screw with things and want to make
718     # sure we didn't break anything
719     #TESTS() {
720     # CFLAGS="-a -b -c=1"
721     # CXXFLAGS="-x -y -z=2"
722     # LDFLAGS="-l -m -n=3"
723     #
724     # die() { exit 1; }
725     # (is-flag 1 2 3) && die
726     # (is-ldflag 1 2 3) && die
727     #
728     # is-flagq -l && die
729     # is-ldflagq -a && die
730     # is-flagq -a || die
731     # is-flagq -x || die
732     # is-ldflagq -n=* || die
733     # is-ldflagq -n && die
734     #
735     # strip-unsupported-flags
736     # [[ ${CFLAGS} == "-c=1" ]] || die
737     # [[ ${CXXFLAGS} == "-y -z=2" ]] || die
738     #
739     # echo "All tests pass"
740     #}
741     #TESTS

  ViewVC Help
Powered by ViewVC 1.1.20