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Revision 1.165 - (hide annotations) (download)
Sat Jan 14 08:05:32 2012 UTC (2 years, 9 months ago) by vapier
Branch: MAIN
Changes since 1.164: +1 -23 lines
delete dead funcs

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 vapier 1.165 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.164 2012/01/13 22:40:29 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 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 dberkholz 1.124 # {C,CXX,F,FC}FLAGS that we allow in strip-flags
19 vapier 1.117 # Note: shell globs and character lists are allowed
20 vapier 1.36 setup-allowed-flags() {
21 dirtyepic 1.163 ALLOWED_FLAGS="-pipe"
22     ALLOWED_FLAGS+=" -O -O1 -O2 -Os -mcpu -march -mtune"
23     ALLOWED_FLAGS+=" -fstack-protector -fstack-protector-all"
24     ALLOWED_FLAGS+=" -fbounds-checking -fno-strict-overflow"
25     ALLOWED_FLAGS+=" -fno-PIE -fno-pie -fno-unit-at-a-time"
26     ALLOWED_FLAGS+=" -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+"
27     ALLOWED_FLAGS+=" -fno-ident -fpermissive"
28     ALLOWED_FLAGS+=" -W* -w"
29    
30 vapier 1.65 # allow a bunch of flags that negate features / control ABI
31 dirtyepic 1.163 ALLOWED_FLAGS+=" -fno-stack-protector -fno-stack-protector-all \
32     -fno-strict-aliasing -fno-bounds-checking -fstrict-overflow \
33     -fno-omit-frame-pointer"
34     ALLOWED_FLAGS+=" -mregparm -mno-app-regs -mapp-regs -mno-mmx -mno-sse \
35     -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 -mno-sse4.2 \
36     -mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow -mno-popcnt \
37     -mno-abm -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -mplt \
38 vapier 1.87 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
39 dirtyepic 1.149 -mieee -mieee-with-inexact -mschedule -mfloat-gprs -mspe -mno-spe \
40 dirtyepic 1.163 -mtls-direct-seg-refs -mno-tls-direct-seg-refs -mflat -mno-flat \
41     -mno-faster-structs -mfaster-structs -m32 -m64 -mx32 -mabi \
42     -mlittle-endian -mbig-endian -EL -EB -fPIC -mlive-g0 -mcmodel \
43     -mstack-bias -mno-stack-bias -msecure-plt -m*-toc -D* -U*"
44 vapier 1.135
45 dirtyepic 1.148 # 4.5
46 dirtyepic 1.163 ALLOWED_FLAGS+=" -mno-fma4 -mno-movbe -mno-xop -mno-lwp"
47 dirtyepic 1.149 # 4.6
48 dirtyepic 1.163 ALLOWED_FLAGS+=" -mno-fsgsbase -mno-rdrnd -mno-f16c -mno-bmi -mno-tbm"
49 dirtyepic 1.148
50 dirtyepic 1.163 export ALLOWED_FLAGS
51 vapier 1.36 return 0
52 aliz 1.24 }
53 verwilst 1.13
54 kevquinn 1.105 # inverted filters for hardened compiler. This is trying to unpick
55     # the hardened compiler defaults.
56     _filter-hardened() {
57     local f
58     for f in "$@" ; do
59     case "${f}" in
60     # Ideally we should only concern ourselves with PIE flags,
61     # not -fPIC or -fpic, but too many places filter -fPIC without
62     # thinking about -fPIE.
63     -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
64     gcc-specs-pie || continue
65     is-flagq -nopie || append-flags -nopie;;
66     -fstack-protector)
67     gcc-specs-ssp || continue
68 gengor 1.131 is-flagq -fno-stack-protector || append-flags $(test-flags -fno-stack-protector);;
69 kevquinn 1.105 -fstack-protector-all)
70     gcc-specs-ssp-to-all || continue
71 gengor 1.131 is-flagq -fno-stack-protector-all || append-flags $(test-flags -fno-stack-protector-all);;
72 gengor 1.128 -fno-strict-overflow)
73     gcc-specs-nostrict || continue
74 gengor 1.131 is-flagq -fstrict-overflow || append-flags $(test-flags -fstrict-overflow);;
75 solar 1.27 esac
76     done
77 kevquinn 1.105 }
78    
79     # Remove occurrences of strings from variable given in $1
80     # Strings removed are matched as globs, so for example
81     # '-O*' would remove -O1, -O2 etc.
82     _filter-var() {
83     local f x VAR VAL
84     declare -a new
85 vapier 1.36
86 kevquinn 1.105 VAR=$1
87     shift
88     eval VAL=\${${VAR}}
89     for f in ${VAL}; do
90     for x in "$@"; do
91     # Note this should work with globs like -O*
92     [[ ${f} == ${x} ]] && continue 2
93 agriffis 1.61 done
94 kevquinn 1.105 eval new\[\${\#new\[@]}]=\${f}
95 verwilst 1.1 done
96 kevquinn 1.105 eval export ${VAR}=\${new\[*]}
97     }
98 agriffis 1.61
99 vapier 1.121 # @FUNCTION: filter-flags
100     # @USAGE: <flags>
101     # @DESCRIPTION:
102 vapier 1.164 # Remove particular <flags> from {C,CPP,CXX,F,FC,LD}FLAGS. Accepts shell globs.
103 kevquinn 1.105 filter-flags() {
104     _filter-hardened "$@"
105 vapier 1.164 local v
106     for v in C CPP CXX F FC LD ; do
107     _filter-var ${v}FLAGS "$@"
108     done
109 vapier 1.36 return 0
110 verwilst 1.2 }
111    
112 vapier 1.121 # @FUNCTION: filter-lfs-flags
113     # @DESCRIPTION:
114     # Remove flags that enable Large File Support.
115 vapier 1.40 filter-lfs-flags() {
116 vapier 1.154 [[ $# -ne 0 ]] && die "filter-lfs-flags takes no arguments"
117 vapier 1.153 # http://www.gnu.org/s/libc/manual/html_node/Feature-Test-Macros.html
118     # _LARGEFILE_SOURCE: enable support for new LFS funcs (ftello/etc...)
119     # _LARGEFILE64_SOURCE: enable support for 64bit variants (off64_t/fseeko64/etc...)
120     # _FILE_OFFSET_BITS: default to 64bit variants (off_t is defined as off64_t)
121 vapier 1.40 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
122     }
123    
124 vapier 1.121 # @FUNCTION: append-cppflags
125     # @USAGE: <flags>
126     # @DESCRIPTION:
127     # Add extra <flags> to the current CPPFLAGS.
128 vapier 1.118 append-cppflags() {
129 vapier 1.158 [[ $# -eq 0 ]] && return 0
130 vapier 1.118 export CPPFLAGS="${CPPFLAGS} $*"
131     return 0
132     }
133    
134 vapier 1.136 # @FUNCTION: append-cflags
135     # @USAGE: <flags>
136     # @DESCRIPTION:
137     # Add extra <flags> to the current CFLAGS.
138 mr_bones_ 1.137 append-cflags() {
139 vapier 1.158 [[ $# -eq 0 ]] && return 0
140     export CFLAGS=$(test-flags-CC ${CFLAGS} "$@")
141 vapier 1.136 return 0
142     }
143    
144 gengor 1.132 # @FUNCTION: append-cxxflags
145     # @USAGE: <flags>
146     # @DESCRIPTION:
147     # Add extra <flags> to the current CXXFLAGS.
148     append-cxxflags() {
149 vapier 1.158 [[ $# -eq 0 ]] && return 0
150     export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS} "$@")
151 gengor 1.132 return 0
152     }
153    
154 dberkholz 1.124 # @FUNCTION: append-fflags
155     # @USAGE: <flags>
156     # @DESCRIPTION:
157     # Add extra <flags> to the current {F,FC}FLAGS.
158     append-fflags() {
159 vapier 1.158 [[ $# -eq 0 ]] && return 0
160     export FFLAGS=$(test-flags-F77 ${FFLAGS} "$@")
161     export FCFLAGS=$(test-flags-FC ${FCFLAGS} "$@")
162 dberkholz 1.124 return 0
163     }
164    
165 vapier 1.121 # @FUNCTION: append-lfs-flags
166     # @DESCRIPTION:
167     # Add flags that enable Large File Support.
168 vapier 1.48 append-lfs-flags() {
169 vapier 1.154 [[ $# -ne 0 ]] && die "append-lfs-flags takes no arguments"
170 vapier 1.155 # see comments in filter-lfs-flags func for meaning of these
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 vapier 1.158 [[ $# -eq 0 ]] && return 0
180 vapier 1.136 append-cflags "$@"
181 vapier 1.138 append-cxxflags "$@"
182 vapier 1.136 append-fflags "$@"
183 vapier 1.28 return 0
184 verwilst 1.1 }
185    
186 vapier 1.121 # @FUNCTION: replace-flags
187     # @USAGE: <old> <new>
188     # @DESCRIPTION:
189     # Replace the <old> flag with <new>. Accepts shell globs for <old>.
190 vapier 1.18 replace-flags() {
191 vapier 1.93 [[ $# != 2 ]] \
192     && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
193     && die "replace-flags takes 2 arguments, not $#"
194    
195 mr_bones_ 1.83 local f fset
196 dirtyepic 1.125 declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS
197 agriffis 1.64
198 dberkholz 1.124 for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do
199 agriffis 1.64 # Looping over the flags instead of using a global
200     # substitution ensures that we're working with flag atoms.
201     # Otherwise globs like -O* have the potential to wipe out the
202     # list of flags.
203     for f in ${!fset}; do
204     # Note this should work with globs like -O*
205     [[ ${f} == ${1} ]] && f=${2}
206     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
207     done
208     eval export ${fset}=\${new_${fset}\[*]}
209     done
210    
211 vapier 1.28 return 0
212 danarmak 1.7 }
213    
214 vapier 1.121 # @FUNCTION: replace-cpu-flags
215     # @USAGE: <old> <new>
216     # @DESCRIPTION:
217     # Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu
218     # with flags that select the <new> cpu. Accepts shell globs for <old>.
219 vapier 1.37 replace-cpu-flags() {
220 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
221     while [ $# -gt 1 ] ; do
222 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
223 vapier 1.113 # ${oldcpu}) prior to calling replace-flags
224 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
225     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
226     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
227     shift
228 vapier 1.37 done
229     return 0
230     }
231    
232 vapier 1.113 _is_flagq() {
233 kevquinn 1.105 local x
234 vapier 1.113 for x in ${!1} ; do
235     [[ ${x} == $2 ]] && return 0
236 kevquinn 1.105 done
237     return 1
238     }
239    
240 vapier 1.121 # @FUNCTION: is-flagq
241     # @USAGE: <flag>
242     # @DESCRIPTION:
243 dberkholz 1.124 # Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs.
244 vapier 1.113 is-flagq() {
245     [[ -n $2 ]] && die "Usage: is-flag <flag>"
246 dberkholz 1.124 _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1
247 vapier 1.113 }
248    
249 vapier 1.121 # @FUNCTION: is-flag
250     # @USAGE: <flag>
251     # @DESCRIPTION:
252 dberkholz 1.124 # Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs.
253 danarmak 1.7 is-flag() {
254 vapier 1.113 is-flagq "$@" && echo true
255 kevquinn 1.105 }
256    
257 vapier 1.121 # @FUNCTION: is-ldflagq
258     # @USAGE: <flag>
259     # @DESCRIPTION:
260     # Returns shell true if <flag> is in LDFLAGS, else returns shell false. Accepts shell globs.
261 kevquinn 1.105 is-ldflagq() {
262 vapier 1.113 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
263     _is_flagq LDFLAGS $1
264 verwilst 1.1 }
265 azarah 1.8
266 vapier 1.121 # @FUNCTION: is-ldflag
267     # @USAGE: <flag>
268     # @DESCRIPTION:
269     # Echo's "true" if flag is set in LDFLAGS. Accepts shell globs.
270 kevquinn 1.105 is-ldflag() {
271 vapier 1.113 is-ldflagq "$@" && echo true
272 kevquinn 1.105 }
273    
274 vapier 1.121 # @FUNCTION: filter-mfpmath
275     # @USAGE: <math types>
276     # @DESCRIPTION:
277     # Remove specified math types from the fpmath flag. For example, if the user
278     # has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with
279     # -mfpmath=386.
280 vapier 1.36 filter-mfpmath() {
281 agriffis 1.58 local orig_mfpmath new_math prune_math
282    
283 vapier 1.36 # save the original -mfpmath flag
284 vapier 1.109 orig_mfpmath=$(get-flag -mfpmath)
285 vapier 1.36 # get the value of the current -mfpmath flag
286 vapier 1.109 new_math=$(get-flag mfpmath)
287     new_math=" ${new_math//,/ } "
288 vapier 1.36 # figure out which math values are to be removed
289 agriffis 1.58 prune_math=""
290 vapier 1.36 for prune_math in "$@" ; do
291 vapier 1.109 new_math=${new_math/ ${prune_math} / }
292 vapier 1.36 done
293 vapier 1.109 new_math=$(echo ${new_math})
294     new_math=${new_math// /,}
295 vapier 1.36
296 vapier 1.109 if [[ -z ${new_math} ]] ; then
297 vapier 1.36 # if we're removing all user specified math values are
298     # slated for removal, then we just filter the flag
299     filter-flags ${orig_mfpmath}
300     else
301     # if we only want to filter some of the user specified
302     # math values, then we replace the current flag
303     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
304     fi
305     return 0
306     }
307    
308 vapier 1.121 # @FUNCTION: strip-flags
309     # @DESCRIPTION:
310     # Strip C[XX]FLAGS of everything except known good/safe flags.
311 azarah 1.8 strip-flags() {
312 dberkholz 1.124 local x y flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS
313 agriffis 1.58
314 vapier 1.36 setup-allowed-flags
315    
316 azarah 1.8 local NEW_CFLAGS=""
317     local NEW_CXXFLAGS=""
318 dberkholz 1.124 local NEW_FFLAGS=""
319     local NEW_FCFLAGS=""
320 azarah 1.8
321 agriffis 1.58 set -f # disable pathname expansion
322 azarah 1.8
323 agriffis 1.58 for x in ${CFLAGS}; do
324     for y in ${ALLOWED_FLAGS}; do
325 lostlogic 1.14 flag=${x%%=*}
326 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
327 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
328     break
329 azarah 1.8 fi
330     done
331     done
332    
333 agriffis 1.58 for x in ${CXXFLAGS}; do
334     for y in ${ALLOWED_FLAGS}; do
335 lostlogic 1.14 flag=${x%%=*}
336 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
337 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
338     break
339 azarah 1.8 fi
340     done
341     done
342 azarah 1.30
343 dberkholz 1.124 for x in ${FFLAGS}; do
344     for y in ${ALLOWED_FLAGS}; do
345     flag=${x%%=*}
346     if [ "${flag%%${y}}" = "" ] ; then
347     NEW_FFLAGS="${NEW_FFLAGS} ${x}"
348     break
349     fi
350     done
351     done
352    
353     for x in ${FCFLAGS}; do
354     for y in ${ALLOWED_FLAGS}; do
355     flag=${x%%=*}
356     if [ "${flag%%${y}}" = "" ] ; then
357     NEW_FCFLAGS="${NEW_FCFLAGS} ${x}"
358     break
359     fi
360     done
361     done
362    
363 azarah 1.30 # In case we filtered out all optimization flags fallback to -O2
364     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
365     NEW_CFLAGS="${NEW_CFLAGS} -O2"
366     fi
367     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
368     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
369     fi
370 dberkholz 1.124 if [ "${FFLAGS/-O}" != "${FFLAGS}" -a "${NEW_FFLAGS/-O}" = "${NEW_FFLAGS}" ]; then
371     NEW_FFLAGS="${NEW_FFLAGS} -O2"
372     fi
373     if [ "${FCFLAGS/-O}" != "${FCFLAGS}" -a "${NEW_FCFLAGS/-O}" = "${NEW_FCFLAGS}" ]; then
374     NEW_FCFLAGS="${NEW_FCFLAGS} -O2"
375     fi
376 azarah 1.8
377 agriffis 1.58 set +f # re-enable pathname expansion
378 azarah 1.8
379     export CFLAGS="${NEW_CFLAGS}"
380     export CXXFLAGS="${NEW_CXXFLAGS}"
381 dberkholz 1.124 export FFLAGS="${NEW_FFLAGS}"
382     export FCFLAGS="${NEW_FCFLAGS}"
383 vapier 1.36 return 0
384 puggy 1.29 }
385    
386 azarah 1.96 test-flag-PROG() {
387     local comp=$1
388     local flags="$2"
389    
390 vapier 1.152 [[ -z ${comp} || -z ${flags} ]] && return 1
391 azarah 1.96
392 vapier 1.152 # use -c so we can test the assembler as well
393 azarah 1.96 local PROG=$(tc-get${comp})
394 vapier 1.152 ${PROG} ${flags} -c -o /dev/null -xc /dev/null \
395 azarah 1.96 > /dev/null 2>&1
396     }
397    
398 vapier 1.121 # @FUNCTION: test-flag-CC
399     # @USAGE: <flag>
400     # @DESCRIPTION:
401     # Returns shell true if <flag> is supported by the C compiler, else returns shell false.
402 azarah 1.96 test-flag-CC() { test-flag-PROG "CC" "$1"; }
403    
404 vapier 1.121 # @FUNCTION: test-flag-CXX
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-CXX() { test-flag-PROG "CXX" "$1"; }
409    
410 dberkholz 1.124 # @FUNCTION: test-flag-F77
411     # @USAGE: <flag>
412     # @DESCRIPTION:
413     # Returns shell true if <flag> is supported by the Fortran 77 compiler, else returns shell false.
414     test-flag-F77() { test-flag-PROG "F77" "$1"; }
415    
416     # @FUNCTION: test-flag-FC
417     # @USAGE: <flag>
418     # @DESCRIPTION:
419     # Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false.
420     test-flag-FC() { test-flag-PROG "FC" "$1"; }
421    
422 azarah 1.99 test-flags-PROG() {
423     local comp=$1
424     local flags
425 azarah 1.96 local x
426 azarah 1.99
427     shift
428    
429 vapier 1.113 [[ -z ${comp} ]] && return 1
430 swegener 1.101
431 azarah 1.96 for x in "$@" ; do
432 vapier 1.113 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
433 azarah 1.96 done
434    
435 azarah 1.99 echo "${flags}"
436 azarah 1.96
437 azarah 1.99 # Just bail if we dont have any flags
438     [[ -n ${flags} ]]
439 azarah 1.96 }
440    
441 vapier 1.121 # @FUNCTION: test-flags-CC
442     # @USAGE: <flags>
443     # @DESCRIPTION:
444     # Returns shell true if <flags> are supported by the C compiler, else returns shell false.
445 azarah 1.99 test-flags-CC() { test-flags-PROG "CC" "$@"; }
446    
447 vapier 1.121 # @FUNCTION: test-flags-CXX
448     # @USAGE: <flags>
449     # @DESCRIPTION:
450     # Returns shell true if <flags> are supported by the C++ compiler, else returns shell false.
451 azarah 1.99 test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
452    
453 dberkholz 1.124 # @FUNCTION: test-flags-F77
454     # @USAGE: <flags>
455     # @DESCRIPTION:
456     # Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false.
457     test-flags-F77() { test-flags-PROG "F77" "$@"; }
458    
459     # @FUNCTION: test-flags-FC
460     # @USAGE: <flags>
461     # @DESCRIPTION:
462     # Returns shell true if <flags> are supported by the Fortran 90 compiler, else returns shell false.
463     test-flags-FC() { test-flags-PROG "FC" "$@"; }
464    
465 vapier 1.121 # @FUNCTION: test-flags
466     # @USAGE: <flags>
467     # @DESCRIPTION:
468 azarah 1.99 # Short-hand that should hopefully work for both C and C++ compiler, but
469 azarah 1.100 # its really only present due to the append-flags() abomination.
470 azarah 1.99 test-flags() { test-flags-CC "$@"; }
471    
472 vapier 1.121 # @FUNCTION: test_version_info
473     # @USAGE: <version>
474     # @DESCRIPTION:
475     # Returns shell true if the current C compiler version matches <version>, else returns shell false.
476     # Accepts shell globs.
477 agriffis 1.58 test_version_info() {
478 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
479 agriffis 1.58 return 0
480     else
481     return 1
482     fi
483     }
484    
485 vapier 1.121 # @FUNCTION: strip-unsupported-flags
486     # @DESCRIPTION:
487 dberkholz 1.124 # Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain.
488 puggy 1.29 strip-unsupported-flags() {
489 vapier 1.113 export CFLAGS=$(test-flags-CC ${CFLAGS})
490     export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
491 dberkholz 1.124 export FFLAGS=$(test-flags-F77 ${FFLAGS})
492     export FCFLAGS=$(test-flags-FC ${FCFLAGS})
493 azarah 1.8 }
494    
495 vapier 1.121 # @FUNCTION: get-flag
496     # @USAGE: <flag>
497     # @DESCRIPTION:
498     # Find and echo the value for a particular flag. Accepts shell globs.
499 vapier 1.10 get-flag() {
500 agriffis 1.58 local f findflag="$1"
501    
502 vapier 1.36 # this code looks a little flaky but seems to work for
503     # everything we want ...
504     # for example, if CFLAGS="-march=i686":
505 agriffis 1.58 # `get-flag -march` == "-march=i686"
506     # `get-flag march` == "i686"
507 dberkholz 1.124 for f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do
508 vapier 1.10 if [ "${f/${findflag}}" != "${f}" ] ; then
509 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
510 vapier 1.28 return 0
511 vapier 1.10 fi
512     done
513 vapier 1.28 return 1
514 joker 1.16 }
515    
516 vapier 1.121 # @FUNCTION: has_m64
517     # @DESCRIPTION:
518     # This doesn't test if the flag is accepted, it tests if the flag actually
519     # WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works
520     # return code is 0, else the return code is 1.
521 lv 1.56 has_m64() {
522 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
523     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
524     # please dont replace this function with test_flag in some future
525     # clean-up!
526 swegener 1.101
527 vapier 1.72 local temp="$(emktemp)"
528 azarah 1.96 echo "int main() { return(0); }" > "${temp}".c
529 kugelfang 1.74 MY_CC=$(tc-getCC)
530 azarah 1.96 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
531 vapier 1.72 local ret=$?
532 azarah 1.96 rm -f "${temp}".c
533     [[ ${ret} != 1 ]] && return 0
534 lv 1.62 return 1
535 lv 1.56 }
536    
537 vapier 1.121 # @FUNCTION: has_m32
538     # @DESCRIPTION:
539     # This doesn't test if the flag is accepted, it tests if the flag actually
540     # WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return
541     # code is 0, else return code is 1.
542 lv 1.56 has_m32() {
543 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
544     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
545     # please dont replace this function with test_flag in some future
546     # clean-up!
547 eradicator 1.80
548     [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
549    
550 vapier 1.95 local temp=$(emktemp)
551     echo "int main() { return(0); }" > "${temp}".c
552 kugelfang 1.74 MY_CC=$(tc-getCC)
553 vapier 1.95 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
554 vapier 1.72 local ret=$?
555 vapier 1.95 rm -f "${temp}".c
556 azarah 1.96 [[ ${ret} != 1 ]] && return 0
557 lv 1.62 return 1
558 lv 1.56 }
559    
560 vapier 1.121 # @FUNCTION: replace-sparc64-flags
561     # @DESCRIPTION:
562     # Sets mcpu to v8 and uses the original value as mtune if none specified.
563 vapier 1.18 replace-sparc64-flags() {
564 fmccor 1.98 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
565 joker 1.16
566 mr_bones_ 1.83 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
567 agriffis 1.58 for x in ${SPARC64_CPUS}; do
568 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
569     done
570 mr_bones_ 1.83 else
571 swegener 1.111 for x in ${SPARC64_CPUS}; do
572 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
573     done
574     fi
575 mr_bones_ 1.83
576     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
577 agriffis 1.58 for x in ${SPARC64_CPUS}; do
578 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
579     done
580     else
581 swegener 1.111 for x in ${SPARC64_CPUS}; do
582 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
583     done
584     fi
585 vapier 1.59
586     export CFLAGS CXXFLAGS
587 solar 1.27 }
588    
589 abcd 1.147 # @FUNCTION: append-libs
590     # @USAGE: <libs>
591     # @DESCRIPTION:
592     # Add extra <libs> to the current LIBS.
593     append-libs() {
594 vapier 1.158 [[ $# -eq 0 ]] && return 0
595 abcd 1.147 local flag
596     for flag in "$@"; do
597     [[ ${flag} == -l* ]] && flag=${flag#-l}
598     export LIBS="${LIBS} -l${flag}"
599     done
600    
601     return 0
602     }
603    
604 vapier 1.121 # @FUNCTION: append-ldflags
605     # @USAGE: <flags>
606     # @DESCRIPTION:
607     # Add extra <flags> to the current LDFLAGS.
608 solar 1.27 append-ldflags() {
609 vapier 1.158 [[ $# -eq 0 ]] && return 0
610 flameeyes 1.123 local flag
611     for flag in "$@"; do
612     [[ ${flag} == -l* ]] && \
613     ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS"
614     done
615    
616 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
617 vapier 1.28 return 0
618 solar 1.27 }
619    
620 vapier 1.121 # @FUNCTION: filter-ldflags
621     # @USAGE: <flags>
622     # @DESCRIPTION:
623     # Remove particular <flags> from LDFLAGS. Accepts shell globs.
624 solar 1.41 filter-ldflags() {
625 kevquinn 1.105 _filter-var LDFLAGS "$@"
626 solar 1.41 return 0
627     }
628    
629 vapier 1.121 # @FUNCTION: raw-ldflags
630 vapier 1.156 # @USAGE: [flags]
631 vapier 1.121 # @DESCRIPTION:
632 kevquinn 1.105 # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
633     # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
634     # to gcc where it needs the '-Wl,'.
635 vapier 1.156 #
636     # If no flags are specified, then default to ${LDFLAGS}.
637 vapier 1.102 raw-ldflags() {
638     local x input="$@"
639     [[ -z ${input} ]] && input=${LDFLAGS}
640     set --
641     for x in ${input} ; do
642 vapier 1.103 x=${x#-Wl,}
643     set -- "$@" ${x//,/ }
644 vapier 1.102 done
645     echo "$@"
646     }
647    
648 ssuominen 1.145 # @FUNCTION: no-as-needed
649     # @RETURN: Flag to disable asneeded behavior for use with append-ldflags.
650     no-as-needed() {
651     case $($(tc-getLD) -v 2>&1 </dev/null) in
652     *GNU*) # GNU ld
653     echo "-Wl,--no-as-needed" ;;
654     esac
655     }
656 vapier 1.113
657 vapier 1.160 fi

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