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Revision 1.163 - (hide annotations) (download)
Wed Dec 28 06:28:55 2011 UTC (2 years, 7 months ago) by dirtyepic
Branch: MAIN
Changes since 1.162: +24 -26 lines
Clean up setup-allowed-flags().

1 dirtyepic 1.157 # Copyright 1999-2011 Gentoo Foundation
2 verwilst 1.1 # Distributed under the terms of the GNU General Public License v2
3 dirtyepic 1.163 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.162 2011/12/28 05:48:28 dirtyepic 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 vapier 1.160 if [[ ${___ECLASS_ONCE_FLAG_O_MATIC} != "recur -_+^+_- spank" ]] ; then
14     ___ECLASS_ONCE_FLAG_O_MATIC="recur -_+^+_- spank"
15    
16 eradicator 1.80 inherit eutils toolchain-funcs multilib
17 vapier 1.72
18 kevquinn 1.92 ################ DEPRECATED functions ################
19     # The following are still present to avoid breaking existing
20     # code more than necessary; however they are deprecated. Please
21     # use gcc-specs-* from toolchain-funcs.eclass instead, if you
22     # need to know which hardened techs are active in the compiler.
23     # See bug #100974
24     #
25 vapier 1.121 # has_hardened
26     # has_pie
27     # has_pic
28     # has_ssp_all
29     # has_ssp
30    
31 verwilst 1.3
32 dberkholz 1.124 # {C,CXX,F,FC}FLAGS that we allow in strip-flags
33 vapier 1.117 # Note: shell globs and character lists are allowed
34 vapier 1.36 setup-allowed-flags() {
35 dirtyepic 1.163 ALLOWED_FLAGS="-pipe"
36     ALLOWED_FLAGS+=" -O -O1 -O2 -Os -mcpu -march -mtune"
37     ALLOWED_FLAGS+=" -fstack-protector -fstack-protector-all"
38     ALLOWED_FLAGS+=" -fbounds-checking -fno-strict-overflow"
39     ALLOWED_FLAGS+=" -fno-PIE -fno-pie -fno-unit-at-a-time"
40     ALLOWED_FLAGS+=" -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+"
41     ALLOWED_FLAGS+=" -fno-ident -fpermissive"
42     ALLOWED_FLAGS+=" -W* -w"
43    
44 vapier 1.65 # allow a bunch of flags that negate features / control ABI
45 dirtyepic 1.163 ALLOWED_FLAGS+=" -fno-stack-protector -fno-stack-protector-all \
46     -fno-strict-aliasing -fno-bounds-checking -fstrict-overflow \
47     -fno-omit-frame-pointer"
48     ALLOWED_FLAGS+=" -mregparm -mno-app-regs -mapp-regs -mno-mmx -mno-sse \
49     -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 -mno-sse4.2 \
50     -mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow -mno-popcnt \
51     -mno-abm -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -mplt \
52 vapier 1.87 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
53 dirtyepic 1.149 -mieee -mieee-with-inexact -mschedule -mfloat-gprs -mspe -mno-spe \
54 dirtyepic 1.163 -mtls-direct-seg-refs -mno-tls-direct-seg-refs -mflat -mno-flat \
55     -mno-faster-structs -mfaster-structs -m32 -m64 -mx32 -mabi \
56     -mlittle-endian -mbig-endian -EL -EB -fPIC -mlive-g0 -mcmodel \
57     -mstack-bias -mno-stack-bias -msecure-plt -m*-toc -D* -U*"
58 vapier 1.135
59 dirtyepic 1.148 # 4.5
60 dirtyepic 1.163 ALLOWED_FLAGS+=" -mno-fma4 -mno-movbe -mno-xop -mno-lwp"
61 dirtyepic 1.149 # 4.6
62 dirtyepic 1.163 ALLOWED_FLAGS+=" -mno-fsgsbase -mno-rdrnd -mno-f16c -mno-bmi -mno-tbm"
63 dirtyepic 1.148
64 dirtyepic 1.163 export ALLOWED_FLAGS
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 1.154 [[ $# -ne 0 ]] && die "filter-lfs-flags takes no arguments"
132 vapier 1.153 # http://www.gnu.org/s/libc/manual/html_node/Feature-Test-Macros.html
133     # _LARGEFILE_SOURCE: enable support for new LFS funcs (ftello/etc...)
134     # _LARGEFILE64_SOURCE: enable support for 64bit variants (off64_t/fseeko64/etc...)
135     # _FILE_OFFSET_BITS: default to 64bit variants (off_t is defined as off64_t)
136 vapier 1.40 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
137     }
138    
139 vapier 1.121 # @FUNCTION: append-cppflags
140     # @USAGE: <flags>
141     # @DESCRIPTION:
142     # Add extra <flags> to the current CPPFLAGS.
143 vapier 1.118 append-cppflags() {
144 vapier 1.158 [[ $# -eq 0 ]] && return 0
145 vapier 1.118 export CPPFLAGS="${CPPFLAGS} $*"
146     return 0
147     }
148    
149 vapier 1.136 # @FUNCTION: append-cflags
150     # @USAGE: <flags>
151     # @DESCRIPTION:
152     # Add extra <flags> to the current CFLAGS.
153 mr_bones_ 1.137 append-cflags() {
154 vapier 1.158 [[ $# -eq 0 ]] && return 0
155     export CFLAGS=$(test-flags-CC ${CFLAGS} "$@")
156 vapier 1.136 return 0
157     }
158    
159 gengor 1.132 # @FUNCTION: append-cxxflags
160     # @USAGE: <flags>
161     # @DESCRIPTION:
162     # Add extra <flags> to the current CXXFLAGS.
163     append-cxxflags() {
164 vapier 1.158 [[ $# -eq 0 ]] && return 0
165     export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS} "$@")
166 gengor 1.132 return 0
167     }
168    
169 dberkholz 1.124 # @FUNCTION: append-fflags
170     # @USAGE: <flags>
171     # @DESCRIPTION:
172     # Add extra <flags> to the current {F,FC}FLAGS.
173     append-fflags() {
174 vapier 1.158 [[ $# -eq 0 ]] && return 0
175     export FFLAGS=$(test-flags-F77 ${FFLAGS} "$@")
176     export FCFLAGS=$(test-flags-FC ${FCFLAGS} "$@")
177 dberkholz 1.124 return 0
178     }
179    
180 vapier 1.121 # @FUNCTION: append-lfs-flags
181     # @DESCRIPTION:
182     # Add flags that enable Large File Support.
183 vapier 1.48 append-lfs-flags() {
184 vapier 1.154 [[ $# -ne 0 ]] && die "append-lfs-flags takes no arguments"
185 vapier 1.155 # see comments in filter-lfs-flags func for meaning of these
186 vapier 1.118 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
187 vapier 1.48 }
188    
189 vapier 1.121 # @FUNCTION: append-flags
190     # @USAGE: <flags>
191     # @DESCRIPTION:
192 dberkholz 1.124 # Add extra <flags> to your current {C,CXX,F,FC}FLAGS.
193 vapier 1.18 append-flags() {
194 vapier 1.158 [[ $# -eq 0 ]] && return 0
195 vapier 1.136 append-cflags "$@"
196 vapier 1.138 append-cxxflags "$@"
197 vapier 1.136 append-fflags "$@"
198 vapier 1.28 return 0
199 verwilst 1.1 }
200    
201 vapier 1.121 # @FUNCTION: replace-flags
202     # @USAGE: <old> <new>
203     # @DESCRIPTION:
204     # Replace the <old> flag with <new>. Accepts shell globs for <old>.
205 vapier 1.18 replace-flags() {
206 vapier 1.93 [[ $# != 2 ]] \
207     && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
208     && die "replace-flags takes 2 arguments, not $#"
209    
210 mr_bones_ 1.83 local f fset
211 dirtyepic 1.125 declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS
212 agriffis 1.64
213 dberkholz 1.124 for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do
214 agriffis 1.64 # Looping over the flags instead of using a global
215     # substitution ensures that we're working with flag atoms.
216     # Otherwise globs like -O* have the potential to wipe out the
217     # list of flags.
218     for f in ${!fset}; do
219     # Note this should work with globs like -O*
220     [[ ${f} == ${1} ]] && f=${2}
221     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
222     done
223     eval export ${fset}=\${new_${fset}\[*]}
224     done
225    
226 vapier 1.28 return 0
227 danarmak 1.7 }
228    
229 vapier 1.121 # @FUNCTION: replace-cpu-flags
230     # @USAGE: <old> <new>
231     # @DESCRIPTION:
232     # Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu
233     # with flags that select the <new> cpu. Accepts shell globs for <old>.
234 vapier 1.37 replace-cpu-flags() {
235 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
236     while [ $# -gt 1 ] ; do
237 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
238 vapier 1.113 # ${oldcpu}) prior to calling replace-flags
239 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
240     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
241     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
242     shift
243 vapier 1.37 done
244     return 0
245     }
246    
247 vapier 1.113 _is_flagq() {
248 kevquinn 1.105 local x
249 vapier 1.113 for x in ${!1} ; do
250     [[ ${x} == $2 ]] && return 0
251 kevquinn 1.105 done
252     return 1
253     }
254    
255 vapier 1.121 # @FUNCTION: is-flagq
256     # @USAGE: <flag>
257     # @DESCRIPTION:
258 dberkholz 1.124 # Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs.
259 vapier 1.113 is-flagq() {
260     [[ -n $2 ]] && die "Usage: is-flag <flag>"
261 dberkholz 1.124 _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1
262 vapier 1.113 }
263    
264 vapier 1.121 # @FUNCTION: is-flag
265     # @USAGE: <flag>
266     # @DESCRIPTION:
267 dberkholz 1.124 # Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs.
268 danarmak 1.7 is-flag() {
269 vapier 1.113 is-flagq "$@" && echo true
270 kevquinn 1.105 }
271    
272 vapier 1.121 # @FUNCTION: is-ldflagq
273     # @USAGE: <flag>
274     # @DESCRIPTION:
275     # Returns shell true if <flag> is in LDFLAGS, else returns shell false. Accepts shell globs.
276 kevquinn 1.105 is-ldflagq() {
277 vapier 1.113 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
278     _is_flagq LDFLAGS $1
279 verwilst 1.1 }
280 azarah 1.8
281 vapier 1.121 # @FUNCTION: is-ldflag
282     # @USAGE: <flag>
283     # @DESCRIPTION:
284     # Echo's "true" if flag is set in LDFLAGS. Accepts shell globs.
285 kevquinn 1.105 is-ldflag() {
286 vapier 1.113 is-ldflagq "$@" && echo true
287 kevquinn 1.105 }
288    
289 vapier 1.121 # @FUNCTION: filter-mfpmath
290     # @USAGE: <math types>
291     # @DESCRIPTION:
292     # Remove specified math types from the fpmath flag. For example, if the user
293     # has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with
294     # -mfpmath=386.
295 vapier 1.36 filter-mfpmath() {
296 agriffis 1.58 local orig_mfpmath new_math prune_math
297    
298 vapier 1.36 # save the original -mfpmath flag
299 vapier 1.109 orig_mfpmath=$(get-flag -mfpmath)
300 vapier 1.36 # get the value of the current -mfpmath flag
301 vapier 1.109 new_math=$(get-flag mfpmath)
302     new_math=" ${new_math//,/ } "
303 vapier 1.36 # figure out which math values are to be removed
304 agriffis 1.58 prune_math=""
305 vapier 1.36 for prune_math in "$@" ; do
306 vapier 1.109 new_math=${new_math/ ${prune_math} / }
307 vapier 1.36 done
308 vapier 1.109 new_math=$(echo ${new_math})
309     new_math=${new_math// /,}
310 vapier 1.36
311 vapier 1.109 if [[ -z ${new_math} ]] ; then
312 vapier 1.36 # if we're removing all user specified math values are
313     # slated for removal, then we just filter the flag
314     filter-flags ${orig_mfpmath}
315     else
316     # if we only want to filter some of the user specified
317     # math values, then we replace the current flag
318     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
319     fi
320     return 0
321     }
322    
323 vapier 1.121 # @FUNCTION: strip-flags
324     # @DESCRIPTION:
325     # Strip C[XX]FLAGS of everything except known good/safe flags.
326 azarah 1.8 strip-flags() {
327 dberkholz 1.124 local x y flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS
328 agriffis 1.58
329 vapier 1.36 setup-allowed-flags
330    
331 azarah 1.8 local NEW_CFLAGS=""
332     local NEW_CXXFLAGS=""
333 dberkholz 1.124 local NEW_FFLAGS=""
334     local NEW_FCFLAGS=""
335 azarah 1.8
336 agriffis 1.58 set -f # disable pathname expansion
337 azarah 1.8
338 agriffis 1.58 for x in ${CFLAGS}; do
339     for y in ${ALLOWED_FLAGS}; do
340 lostlogic 1.14 flag=${x%%=*}
341 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
342 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
343     break
344 azarah 1.8 fi
345     done
346     done
347    
348 agriffis 1.58 for x in ${CXXFLAGS}; do
349     for y in ${ALLOWED_FLAGS}; do
350 lostlogic 1.14 flag=${x%%=*}
351 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
352 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
353     break
354 azarah 1.8 fi
355     done
356     done
357 azarah 1.30
358 dberkholz 1.124 for x in ${FFLAGS}; do
359     for y in ${ALLOWED_FLAGS}; do
360     flag=${x%%=*}
361     if [ "${flag%%${y}}" = "" ] ; then
362     NEW_FFLAGS="${NEW_FFLAGS} ${x}"
363     break
364     fi
365     done
366     done
367    
368     for x in ${FCFLAGS}; do
369     for y in ${ALLOWED_FLAGS}; do
370     flag=${x%%=*}
371     if [ "${flag%%${y}}" = "" ] ; then
372     NEW_FCFLAGS="${NEW_FCFLAGS} ${x}"
373     break
374     fi
375     done
376     done
377    
378 azarah 1.30 # In case we filtered out all optimization flags fallback to -O2
379     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
380     NEW_CFLAGS="${NEW_CFLAGS} -O2"
381     fi
382     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
383     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
384     fi
385 dberkholz 1.124 if [ "${FFLAGS/-O}" != "${FFLAGS}" -a "${NEW_FFLAGS/-O}" = "${NEW_FFLAGS}" ]; then
386     NEW_FFLAGS="${NEW_FFLAGS} -O2"
387     fi
388     if [ "${FCFLAGS/-O}" != "${FCFLAGS}" -a "${NEW_FCFLAGS/-O}" = "${NEW_FCFLAGS}" ]; then
389     NEW_FCFLAGS="${NEW_FCFLAGS} -O2"
390     fi
391 azarah 1.8
392 agriffis 1.58 set +f # re-enable pathname expansion
393 azarah 1.8
394     export CFLAGS="${NEW_CFLAGS}"
395     export CXXFLAGS="${NEW_CXXFLAGS}"
396 dberkholz 1.124 export FFLAGS="${NEW_FFLAGS}"
397     export FCFLAGS="${NEW_FCFLAGS}"
398 vapier 1.36 return 0
399 puggy 1.29 }
400    
401 azarah 1.96 test-flag-PROG() {
402     local comp=$1
403     local flags="$2"
404    
405 vapier 1.152 [[ -z ${comp} || -z ${flags} ]] && return 1
406 azarah 1.96
407 vapier 1.152 # use -c so we can test the assembler as well
408 azarah 1.96 local PROG=$(tc-get${comp})
409 vapier 1.152 ${PROG} ${flags} -c -o /dev/null -xc /dev/null \
410 azarah 1.96 > /dev/null 2>&1
411     }
412    
413 vapier 1.121 # @FUNCTION: test-flag-CC
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-CC() { test-flag-PROG "CC" "$1"; }
418    
419 vapier 1.121 # @FUNCTION: test-flag-CXX
420     # @USAGE: <flag>
421     # @DESCRIPTION:
422     # Returns shell true if <flag> is supported by the C++ compiler, else returns shell false.
423 azarah 1.96 test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
424    
425 dberkholz 1.124 # @FUNCTION: test-flag-F77
426     # @USAGE: <flag>
427     # @DESCRIPTION:
428     # Returns shell true if <flag> is supported by the Fortran 77 compiler, else returns shell false.
429     test-flag-F77() { test-flag-PROG "F77" "$1"; }
430    
431     # @FUNCTION: test-flag-FC
432     # @USAGE: <flag>
433     # @DESCRIPTION:
434     # Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false.
435     test-flag-FC() { test-flag-PROG "FC" "$1"; }
436    
437 azarah 1.99 test-flags-PROG() {
438     local comp=$1
439     local flags
440 azarah 1.96 local x
441 azarah 1.99
442     shift
443    
444 vapier 1.113 [[ -z ${comp} ]] && return 1
445 swegener 1.101
446 azarah 1.96 for x in "$@" ; do
447 vapier 1.113 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
448 azarah 1.96 done
449    
450 azarah 1.99 echo "${flags}"
451 azarah 1.96
452 azarah 1.99 # Just bail if we dont have any flags
453     [[ -n ${flags} ]]
454 azarah 1.96 }
455    
456 vapier 1.121 # @FUNCTION: test-flags-CC
457     # @USAGE: <flags>
458     # @DESCRIPTION:
459     # Returns shell true if <flags> are supported by the C compiler, else returns shell false.
460 azarah 1.99 test-flags-CC() { test-flags-PROG "CC" "$@"; }
461    
462 vapier 1.121 # @FUNCTION: test-flags-CXX
463     # @USAGE: <flags>
464     # @DESCRIPTION:
465     # Returns shell true if <flags> are supported by the C++ compiler, else returns shell false.
466 azarah 1.99 test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
467    
468 dberkholz 1.124 # @FUNCTION: test-flags-F77
469     # @USAGE: <flags>
470     # @DESCRIPTION:
471     # Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false.
472     test-flags-F77() { test-flags-PROG "F77" "$@"; }
473    
474     # @FUNCTION: test-flags-FC
475     # @USAGE: <flags>
476     # @DESCRIPTION:
477     # Returns shell true if <flags> are supported by the Fortran 90 compiler, else returns shell false.
478     test-flags-FC() { test-flags-PROG "FC" "$@"; }
479    
480 vapier 1.121 # @FUNCTION: test-flags
481     # @USAGE: <flags>
482     # @DESCRIPTION:
483 azarah 1.99 # Short-hand that should hopefully work for both C and C++ compiler, but
484 azarah 1.100 # its really only present due to the append-flags() abomination.
485 azarah 1.99 test-flags() { test-flags-CC "$@"; }
486    
487 vapier 1.121 # @FUNCTION: test_version_info
488     # @USAGE: <version>
489     # @DESCRIPTION:
490     # Returns shell true if the current C compiler version matches <version>, else returns shell false.
491     # Accepts shell globs.
492 agriffis 1.58 test_version_info() {
493 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
494 agriffis 1.58 return 0
495     else
496     return 1
497     fi
498     }
499    
500 vapier 1.121 # @FUNCTION: strip-unsupported-flags
501     # @DESCRIPTION:
502 dberkholz 1.124 # Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain.
503 puggy 1.29 strip-unsupported-flags() {
504 vapier 1.113 export CFLAGS=$(test-flags-CC ${CFLAGS})
505     export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
506 dberkholz 1.124 export FFLAGS=$(test-flags-F77 ${FFLAGS})
507     export FCFLAGS=$(test-flags-FC ${FCFLAGS})
508 azarah 1.8 }
509    
510 vapier 1.121 # @FUNCTION: get-flag
511     # @USAGE: <flag>
512     # @DESCRIPTION:
513     # Find and echo the value for a particular flag. Accepts shell globs.
514 vapier 1.10 get-flag() {
515 agriffis 1.58 local f findflag="$1"
516    
517 vapier 1.36 # this code looks a little flaky but seems to work for
518     # everything we want ...
519     # for example, if CFLAGS="-march=i686":
520 agriffis 1.58 # `get-flag -march` == "-march=i686"
521     # `get-flag march` == "i686"
522 dberkholz 1.124 for f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do
523 vapier 1.10 if [ "${f/${findflag}}" != "${f}" ] ; then
524 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
525 vapier 1.28 return 0
526 vapier 1.10 fi
527     done
528 vapier 1.28 return 1
529 joker 1.16 }
530    
531 vapier 1.151 # DEAD FUNCS. Remove by Dec 2011.
532     test_flag() { die "$0: deprecated, please use test-flags()!" ; }
533     has_hardened() { die "$0: deprecated, please use gcc-specs-{relro,now}()!" ; }
534     has_pic() { die "$0: deprecated, please use gcc-specs-pie()!" ; }
535     has_pie() { die "$0: deprecated, please use gcc-specs-pie()!" ; }
536     has_ssp_all() { die "$0: deprecated, please use gcc-specs-ssp()!" ; }
537     has_ssp() { die "$0: deprecated, please use gcc-specs-ssp()!" ; }
538 tseng 1.42
539 vapier 1.121 # @FUNCTION: has_m64
540     # @DESCRIPTION:
541     # This doesn't test if the flag is accepted, it tests if the flag actually
542     # WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works
543     # return code is 0, else the return code is 1.
544 lv 1.56 has_m64() {
545 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
546     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
547     # please dont replace this function with test_flag in some future
548     # clean-up!
549 swegener 1.101
550 vapier 1.72 local temp="$(emktemp)"
551 azarah 1.96 echo "int main() { return(0); }" > "${temp}".c
552 kugelfang 1.74 MY_CC=$(tc-getCC)
553 azarah 1.96 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
554 vapier 1.72 local ret=$?
555 azarah 1.96 rm -f "${temp}".c
556     [[ ${ret} != 1 ]] && return 0
557 lv 1.62 return 1
558 lv 1.56 }
559    
560 vapier 1.121 # @FUNCTION: has_m32
561     # @DESCRIPTION:
562     # This doesn't test if the flag is accepted, it tests if the flag actually
563     # WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return
564     # code is 0, else return code is 1.
565 lv 1.56 has_m32() {
566 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
567     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
568     # please dont replace this function with test_flag in some future
569     # clean-up!
570 eradicator 1.80
571     [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
572    
573 vapier 1.95 local temp=$(emktemp)
574     echo "int main() { return(0); }" > "${temp}".c
575 kugelfang 1.74 MY_CC=$(tc-getCC)
576 vapier 1.95 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
577 vapier 1.72 local ret=$?
578 vapier 1.95 rm -f "${temp}".c
579 azarah 1.96 [[ ${ret} != 1 ]] && return 0
580 lv 1.62 return 1
581 lv 1.56 }
582    
583 vapier 1.121 # @FUNCTION: replace-sparc64-flags
584     # @DESCRIPTION:
585     # Sets mcpu to v8 and uses the original value as mtune if none specified.
586 vapier 1.18 replace-sparc64-flags() {
587 fmccor 1.98 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
588 joker 1.16
589 mr_bones_ 1.83 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
590 agriffis 1.58 for x in ${SPARC64_CPUS}; do
591 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
592     done
593 mr_bones_ 1.83 else
594 swegener 1.111 for x in ${SPARC64_CPUS}; do
595 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
596     done
597     fi
598 mr_bones_ 1.83
599     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
600 agriffis 1.58 for x in ${SPARC64_CPUS}; do
601 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
602     done
603     else
604 swegener 1.111 for x in ${SPARC64_CPUS}; do
605 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
606     done
607     fi
608 vapier 1.59
609     export CFLAGS CXXFLAGS
610 solar 1.27 }
611    
612 abcd 1.147 # @FUNCTION: append-libs
613     # @USAGE: <libs>
614     # @DESCRIPTION:
615     # Add extra <libs> to the current LIBS.
616     append-libs() {
617 vapier 1.158 [[ $# -eq 0 ]] && return 0
618 abcd 1.147 local flag
619     for flag in "$@"; do
620     [[ ${flag} == -l* ]] && flag=${flag#-l}
621     export LIBS="${LIBS} -l${flag}"
622     done
623    
624     return 0
625     }
626    
627 vapier 1.121 # @FUNCTION: append-ldflags
628     # @USAGE: <flags>
629     # @DESCRIPTION:
630     # Add extra <flags> to the current LDFLAGS.
631 solar 1.27 append-ldflags() {
632 vapier 1.158 [[ $# -eq 0 ]] && return 0
633 flameeyes 1.123 local flag
634     for flag in "$@"; do
635     [[ ${flag} == -l* ]] && \
636     ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS"
637     done
638    
639 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
640 vapier 1.28 return 0
641 solar 1.27 }
642    
643 vapier 1.121 # @FUNCTION: filter-ldflags
644     # @USAGE: <flags>
645     # @DESCRIPTION:
646     # Remove particular <flags> from LDFLAGS. Accepts shell globs.
647 solar 1.41 filter-ldflags() {
648 kevquinn 1.105 _filter-var LDFLAGS "$@"
649 solar 1.41 return 0
650     }
651    
652 vapier 1.121 # @FUNCTION: raw-ldflags
653 vapier 1.156 # @USAGE: [flags]
654 vapier 1.121 # @DESCRIPTION:
655 kevquinn 1.105 # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
656     # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
657     # to gcc where it needs the '-Wl,'.
658 vapier 1.156 #
659     # If no flags are specified, then default to ${LDFLAGS}.
660 vapier 1.102 raw-ldflags() {
661     local x input="$@"
662     [[ -z ${input} ]] && input=${LDFLAGS}
663     set --
664     for x in ${input} ; do
665 vapier 1.103 x=${x#-Wl,}
666     set -- "$@" ${x//,/ }
667 vapier 1.102 done
668     echo "$@"
669     }
670    
671 ssuominen 1.145 # @FUNCTION: no-as-needed
672     # @RETURN: Flag to disable asneeded behavior for use with append-ldflags.
673     no-as-needed() {
674     case $($(tc-getLD) -v 2>&1 </dev/null) in
675     *GNU*) # GNU ld
676     echo "-Wl,--no-as-needed" ;;
677     esac
678     }
679 vapier 1.113
680 vapier 1.160 fi

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