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Revision 1.148 - (hide annotations) (download)
Sat May 8 03:47:41 2010 UTC (3 years, 11 months ago) by dirtyepic
Branch: MAIN
Changes since 1.147: +4 -1 lines
Add 4.5 -mno-* flags to exception list.

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 dirtyepic 1.148 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.147 2010/04/02 02:50:29 abcd 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 dirtyepic 1.139 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 \
47     -mno-sse4.2 -mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow \
48     -mno-popcnt -mno-abm \
49 vapier 1.140 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -mplt \
50 vapier 1.87 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
51 vapier 1.110 -mieee -mieee-with-inexact -mschedule \
52 vapier 1.91 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
53 vapier 1.87 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
54     -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
55 vapier 1.114 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \
56 solar 1.127 -msecure-plt -m*-toc -D* -U*"
57 vapier 1.135
58 dirtyepic 1.148 # 4.5
59     ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-fma4 -mno-movbe -mno-xop -mno-lwp"
60    
61 dberkholz 1.124 # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing
62 vapier 1.36 # NOTE: currently -Os have issues with gcc3 and K6* arch's
63 vapier 1.106 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
64 vapier 1.36 return 0
65 aliz 1.24 }
66 verwilst 1.13
67 kevquinn 1.105 # inverted filters for hardened compiler. This is trying to unpick
68     # the hardened compiler defaults.
69     _filter-hardened() {
70     local f
71     for f in "$@" ; do
72     case "${f}" in
73     # Ideally we should only concern ourselves with PIE flags,
74     # not -fPIC or -fpic, but too many places filter -fPIC without
75     # thinking about -fPIE.
76     -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
77     gcc-specs-pie || continue
78     is-flagq -nopie || append-flags -nopie;;
79     -fstack-protector)
80     gcc-specs-ssp || continue
81 gengor 1.131 is-flagq -fno-stack-protector || append-flags $(test-flags -fno-stack-protector);;
82 kevquinn 1.105 -fstack-protector-all)
83     gcc-specs-ssp-to-all || continue
84 gengor 1.131 is-flagq -fno-stack-protector-all || append-flags $(test-flags -fno-stack-protector-all);;
85 gengor 1.128 -fno-strict-overflow)
86     gcc-specs-nostrict || continue
87 gengor 1.131 is-flagq -fstrict-overflow || append-flags $(test-flags -fstrict-overflow);;
88 solar 1.27 esac
89     done
90 kevquinn 1.105 }
91    
92     # Remove occurrences of strings from variable given in $1
93     # Strings removed are matched as globs, so for example
94     # '-O*' would remove -O1, -O2 etc.
95     _filter-var() {
96     local f x VAR VAL
97     declare -a new
98 vapier 1.36
99 kevquinn 1.105 VAR=$1
100     shift
101     eval VAL=\${${VAR}}
102     for f in ${VAL}; do
103     for x in "$@"; do
104     # Note this should work with globs like -O*
105     [[ ${f} == ${x} ]] && continue 2
106 agriffis 1.61 done
107 kevquinn 1.105 eval new\[\${\#new\[@]}]=\${f}
108 verwilst 1.1 done
109 kevquinn 1.105 eval export ${VAR}=\${new\[*]}
110     }
111 agriffis 1.61
112 vapier 1.121 # @FUNCTION: filter-flags
113     # @USAGE: <flags>
114     # @DESCRIPTION:
115 dberkholz 1.124 # Remove particular <flags> from {C,CPP,CXX,F,FC}FLAGS. Accepts shell globs.
116 kevquinn 1.105 filter-flags() {
117     _filter-hardened "$@"
118     _filter-var CFLAGS "$@"
119 vapier 1.118 _filter-var CPPFLAGS "$@"
120 kevquinn 1.105 _filter-var CXXFLAGS "$@"
121 dberkholz 1.124 _filter-var FFLAGS "$@"
122     _filter-var FCFLAGS "$@"
123 vapier 1.36 return 0
124 verwilst 1.2 }
125    
126 vapier 1.121 # @FUNCTION: filter-lfs-flags
127     # @DESCRIPTION:
128     # Remove flags that enable Large File Support.
129 vapier 1.40 filter-lfs-flags() {
130 vapier 1.93 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
131 vapier 1.40 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
132     }
133    
134 vapier 1.121 # @FUNCTION: append-cppflags
135     # @USAGE: <flags>
136     # @DESCRIPTION:
137     # Add extra <flags> to the current CPPFLAGS.
138 vapier 1.118 append-cppflags() {
139     [[ -z $* ]] && return 0
140     export CPPFLAGS="${CPPFLAGS} $*"
141     return 0
142     }
143    
144 vapier 1.136 # @FUNCTION: append-cflags
145     # @USAGE: <flags>
146     # @DESCRIPTION:
147     # Add extra <flags> to the current CFLAGS.
148 mr_bones_ 1.137 append-cflags() {
149 vapier 1.136 [[ -z $* ]] && return 0
150     export CFLAGS="${CFLAGS} $*"
151     return 0
152     }
153    
154 gengor 1.132 # @FUNCTION: append-cxxflags
155     # @USAGE: <flags>
156     # @DESCRIPTION:
157     # Add extra <flags> to the current CXXFLAGS.
158     append-cxxflags() {
159     [[ -z $* ]] && return 0
160     export CXXFLAGS="${CXXFLAGS} $*"
161     return 0
162     }
163    
164 dberkholz 1.124 # @FUNCTION: append-fflags
165     # @USAGE: <flags>
166     # @DESCRIPTION:
167     # Add extra <flags> to the current {F,FC}FLAGS.
168     append-fflags() {
169     [[ -z $* ]] && return 0
170     export FFLAGS="${FFLAGS} $*"
171     export FCFLAGS="${FCFLAGS} $*"
172     return 0
173     }
174    
175 vapier 1.121 # @FUNCTION: append-lfs-flags
176     # @DESCRIPTION:
177     # Add flags that enable Large File Support.
178 vapier 1.48 append-lfs-flags() {
179 vapier 1.93 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
180 vapier 1.118 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
181 vapier 1.48 }
182    
183 vapier 1.121 # @FUNCTION: append-flags
184     # @USAGE: <flags>
185     # @DESCRIPTION:
186 dberkholz 1.124 # Add extra <flags> to your current {C,CXX,F,FC}FLAGS.
187 vapier 1.18 append-flags() {
188 solar 1.82 [[ -z $* ]] && return 0
189 vapier 1.136 append-cflags "$@"
190 vapier 1.138 append-cxxflags "$@"
191 vapier 1.136 append-fflags "$@"
192 vapier 1.28 return 0
193 verwilst 1.1 }
194    
195 vapier 1.121 # @FUNCTION: replace-flags
196     # @USAGE: <old> <new>
197     # @DESCRIPTION:
198     # Replace the <old> flag with <new>. Accepts shell globs for <old>.
199 vapier 1.18 replace-flags() {
200 vapier 1.93 [[ $# != 2 ]] \
201     && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
202     && die "replace-flags takes 2 arguments, not $#"
203    
204 mr_bones_ 1.83 local f fset
205 dirtyepic 1.125 declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS
206 agriffis 1.64
207 dberkholz 1.124 for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do
208 agriffis 1.64 # Looping over the flags instead of using a global
209     # substitution ensures that we're working with flag atoms.
210     # Otherwise globs like -O* have the potential to wipe out the
211     # list of flags.
212     for f in ${!fset}; do
213     # Note this should work with globs like -O*
214     [[ ${f} == ${1} ]] && f=${2}
215     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
216     done
217     eval export ${fset}=\${new_${fset}\[*]}
218     done
219    
220 vapier 1.28 return 0
221 danarmak 1.7 }
222    
223 vapier 1.121 # @FUNCTION: replace-cpu-flags
224     # @USAGE: <old> <new>
225     # @DESCRIPTION:
226     # Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu
227     # with flags that select the <new> cpu. Accepts shell globs for <old>.
228 vapier 1.37 replace-cpu-flags() {
229 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
230     while [ $# -gt 1 ] ; do
231 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
232 vapier 1.113 # ${oldcpu}) prior to calling replace-flags
233 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
234     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
235     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
236     shift
237 vapier 1.37 done
238     return 0
239     }
240    
241 vapier 1.113 _is_flagq() {
242 kevquinn 1.105 local x
243 vapier 1.113 for x in ${!1} ; do
244     [[ ${x} == $2 ]] && return 0
245 kevquinn 1.105 done
246     return 1
247     }
248    
249 vapier 1.121 # @FUNCTION: is-flagq
250     # @USAGE: <flag>
251     # @DESCRIPTION:
252 dberkholz 1.124 # Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs.
253 vapier 1.113 is-flagq() {
254     [[ -n $2 ]] && die "Usage: is-flag <flag>"
255 dberkholz 1.124 _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1
256 vapier 1.113 }
257    
258 vapier 1.121 # @FUNCTION: is-flag
259     # @USAGE: <flag>
260     # @DESCRIPTION:
261 dberkholz 1.124 # Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs.
262 danarmak 1.7 is-flag() {
263 vapier 1.113 is-flagq "$@" && echo true
264 kevquinn 1.105 }
265    
266 vapier 1.121 # @FUNCTION: is-ldflagq
267     # @USAGE: <flag>
268     # @DESCRIPTION:
269     # Returns shell true if <flag> is in LDFLAGS, else returns shell false. Accepts shell globs.
270 kevquinn 1.105 is-ldflagq() {
271 vapier 1.113 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
272     _is_flagq LDFLAGS $1
273 verwilst 1.1 }
274 azarah 1.8
275 vapier 1.121 # @FUNCTION: is-ldflag
276     # @USAGE: <flag>
277     # @DESCRIPTION:
278     # Echo's "true" if flag is set in LDFLAGS. Accepts shell globs.
279 kevquinn 1.105 is-ldflag() {
280 vapier 1.113 is-ldflagq "$@" && echo true
281 kevquinn 1.105 }
282    
283 vapier 1.121 # @FUNCTION: filter-mfpmath
284     # @USAGE: <math types>
285     # @DESCRIPTION:
286     # Remove specified math types from the fpmath flag. For example, if the user
287     # has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with
288     # -mfpmath=386.
289 vapier 1.36 filter-mfpmath() {
290 agriffis 1.58 local orig_mfpmath new_math prune_math
291    
292 vapier 1.36 # save the original -mfpmath flag
293 vapier 1.109 orig_mfpmath=$(get-flag -mfpmath)
294 vapier 1.36 # get the value of the current -mfpmath flag
295 vapier 1.109 new_math=$(get-flag mfpmath)
296     new_math=" ${new_math//,/ } "
297 vapier 1.36 # figure out which math values are to be removed
298 agriffis 1.58 prune_math=""
299 vapier 1.36 for prune_math in "$@" ; do
300 vapier 1.109 new_math=${new_math/ ${prune_math} / }
301 vapier 1.36 done
302 vapier 1.109 new_math=$(echo ${new_math})
303     new_math=${new_math// /,}
304 vapier 1.36
305 vapier 1.109 if [[ -z ${new_math} ]] ; then
306 vapier 1.36 # if we're removing all user specified math values are
307     # slated for removal, then we just filter the flag
308     filter-flags ${orig_mfpmath}
309     else
310     # if we only want to filter some of the user specified
311     # math values, then we replace the current flag
312     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
313     fi
314     return 0
315     }
316    
317 vapier 1.121 # @FUNCTION: strip-flags
318     # @DESCRIPTION:
319     # Strip C[XX]FLAGS of everything except known good/safe flags.
320 azarah 1.8 strip-flags() {
321 dberkholz 1.124 local x y flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS
322 agriffis 1.58
323 vapier 1.36 setup-allowed-flags
324    
325 azarah 1.8 local NEW_CFLAGS=""
326     local NEW_CXXFLAGS=""
327 dberkholz 1.124 local NEW_FFLAGS=""
328     local NEW_FCFLAGS=""
329 azarah 1.8
330 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
331 vapier 1.144 if has "~$(tc-arch)" ${ACCEPT_KEYWORDS} ; then
332 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
333     fi
334    
335 agriffis 1.58 set -f # disable pathname expansion
336 azarah 1.8
337 agriffis 1.58 for x in ${CFLAGS}; do
338     for y in ${ALLOWED_FLAGS}; do
339 lostlogic 1.14 flag=${x%%=*}
340 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
341 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
342     break
343 azarah 1.8 fi
344     done
345     done
346    
347 agriffis 1.58 for x in ${CXXFLAGS}; do
348     for y in ${ALLOWED_FLAGS}; do
349 lostlogic 1.14 flag=${x%%=*}
350 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
351 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
352     break
353 azarah 1.8 fi
354     done
355     done
356 azarah 1.30
357 dberkholz 1.124 for x in ${FFLAGS}; do
358     for y in ${ALLOWED_FLAGS}; do
359     flag=${x%%=*}
360     if [ "${flag%%${y}}" = "" ] ; then
361     NEW_FFLAGS="${NEW_FFLAGS} ${x}"
362     break
363     fi
364     done
365     done
366    
367     for x in ${FCFLAGS}; do
368     for y in ${ALLOWED_FLAGS}; do
369     flag=${x%%=*}
370     if [ "${flag%%${y}}" = "" ] ; then
371     NEW_FCFLAGS="${NEW_FCFLAGS} ${x}"
372     break
373     fi
374     done
375     done
376    
377 azarah 1.30 # In case we filtered out all optimization flags fallback to -O2
378     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
379     NEW_CFLAGS="${NEW_CFLAGS} -O2"
380     fi
381     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
382     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
383     fi
384 dberkholz 1.124 if [ "${FFLAGS/-O}" != "${FFLAGS}" -a "${NEW_FFLAGS/-O}" = "${NEW_FFLAGS}" ]; then
385     NEW_FFLAGS="${NEW_FFLAGS} -O2"
386     fi
387     if [ "${FCFLAGS/-O}" != "${FCFLAGS}" -a "${NEW_FCFLAGS/-O}" = "${NEW_FCFLAGS}" ]; then
388     NEW_FCFLAGS="${NEW_FCFLAGS} -O2"
389     fi
390 azarah 1.8
391 agriffis 1.58 set +f # re-enable pathname expansion
392 azarah 1.8
393     export CFLAGS="${NEW_CFLAGS}"
394     export CXXFLAGS="${NEW_CXXFLAGS}"
395 dberkholz 1.124 export FFLAGS="${NEW_FFLAGS}"
396     export FCFLAGS="${NEW_FCFLAGS}"
397 vapier 1.36 return 0
398 puggy 1.29 }
399    
400 azarah 1.96 test-flag-PROG() {
401     local comp=$1
402     local flags="$2"
403    
404     [[ -z ${comp} || -z ${flags} ]] && \
405     return 1
406    
407     local PROG=$(tc-get${comp})
408     ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
409     > /dev/null 2>&1
410     }
411    
412 vapier 1.121 # @FUNCTION: test-flag-CC
413     # @USAGE: <flag>
414     # @DESCRIPTION:
415     # Returns shell true if <flag> is supported by the C compiler, else returns shell false.
416 azarah 1.96 test-flag-CC() { test-flag-PROG "CC" "$1"; }
417    
418 vapier 1.121 # @FUNCTION: test-flag-CXX
419     # @USAGE: <flag>
420     # @DESCRIPTION:
421     # Returns shell true if <flag> is supported by the C++ compiler, else returns shell false.
422 azarah 1.96 test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
423    
424 dberkholz 1.124 # @FUNCTION: test-flag-F77
425     # @USAGE: <flag>
426     # @DESCRIPTION:
427     # Returns shell true if <flag> is supported by the Fortran 77 compiler, else returns shell false.
428     test-flag-F77() { test-flag-PROG "F77" "$1"; }
429    
430     # @FUNCTION: test-flag-FC
431     # @USAGE: <flag>
432     # @DESCRIPTION:
433     # Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false.
434     test-flag-FC() { test-flag-PROG "FC" "$1"; }
435    
436 azarah 1.99 test-flags-PROG() {
437     local comp=$1
438     local flags
439 azarah 1.96 local x
440 azarah 1.99
441     shift
442    
443 vapier 1.113 [[ -z ${comp} ]] && return 1
444 swegener 1.101
445 vapier 1.113 x=""
446 azarah 1.96 for x in "$@" ; 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_flag
488     # @DESCRIPTION:
489     # DEPRICIATED, use test-flags()
490 vapier 1.36 test_flag() {
491 kevquinn 1.104 ewarn "test_flag: deprecated, please use test-flags()!" >&2
492 azarah 1.96
493 azarah 1.99 test-flags-CC "$@"
494 puggy 1.29 }
495    
496 vapier 1.121 # @FUNCTION: test_version_info
497     # @USAGE: <version>
498     # @DESCRIPTION:
499     # Returns shell true if the current C compiler version matches <version>, else returns shell false.
500     # Accepts shell globs.
501 agriffis 1.58 test_version_info() {
502 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
503 agriffis 1.58 return 0
504     else
505     return 1
506     fi
507     }
508    
509 vapier 1.121 # @FUNCTION: strip-unsupported-flags
510     # @DESCRIPTION:
511 dberkholz 1.124 # Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain.
512 puggy 1.29 strip-unsupported-flags() {
513 vapier 1.113 export CFLAGS=$(test-flags-CC ${CFLAGS})
514     export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
515 dberkholz 1.124 export FFLAGS=$(test-flags-F77 ${FFLAGS})
516     export FCFLAGS=$(test-flags-FC ${FCFLAGS})
517 azarah 1.8 }
518    
519 vapier 1.121 # @FUNCTION: get-flag
520     # @USAGE: <flag>
521     # @DESCRIPTION:
522     # Find and echo the value for a particular flag. Accepts shell globs.
523 vapier 1.10 get-flag() {
524 agriffis 1.58 local f findflag="$1"
525    
526 vapier 1.36 # this code looks a little flaky but seems to work for
527     # everything we want ...
528     # for example, if CFLAGS="-march=i686":
529 agriffis 1.58 # `get-flag -march` == "-march=i686"
530     # `get-flag march` == "i686"
531 dberkholz 1.124 for f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do
532 vapier 1.10 if [ "${f/${findflag}}" != "${f}" ] ; then
533 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
534 vapier 1.28 return 0
535 vapier 1.10 fi
536     done
537 vapier 1.28 return 1
538 joker 1.16 }
539    
540 vapier 1.121 # @FUNCTION: has_hardened
541     # @DESCRIPTION:
542 kevquinn 1.92 # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
543 solar 1.53 has_hardened() {
544 kevquinn 1.104 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
545 swegener 1.101
546 lv 1.69 test_version_info Hardened && return 0
547 azarah 1.96 # The specs file wont exist unless gcc has GCC_SPECS support
548     [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
549 solar 1.53 }
550    
551 vapier 1.121 # @FUNCTION: has_pic
552     # @DESCRIPTION:
553 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
554 solar 1.81 # indicate whether PIC is set
555 tseng 1.42 has_pic() {
556 kevquinn 1.104 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
557 swegener 1.101
558 azarah 1.96 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
559 kevquinn 1.105 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
560     gcc-specs-pie
561 tseng 1.42 }
562    
563 vapier 1.121 # @FUNCTION: has_pie
564     # @DESCRIPTION:
565 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
566 solar 1.81 # indicate whether PIE is set
567 mr_bones_ 1.83 has_pie() {
568 kevquinn 1.104 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
569 swegener 1.101
570 azarah 1.96 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
571 kevquinn 1.105 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
572     gcc-specs-pie
573 tseng 1.42 }
574 mr_bones_ 1.83
575 vapier 1.121 # @FUNCTION: has_ssp_all
576     # @DESCRIPTION:
577 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
578 solar 1.86 # indicate whether code for SSP is being generated for all functions
579     has_ssp_all() {
580 kevquinn 1.104 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
581 swegener 1.101
582 solar 1.86 # note; this matches only -fstack-protector-all
583 azarah 1.96 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
584     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
585 gengor 1.130 gcc-specs-ssp-to-all
586 solar 1.86 }
587    
588 vapier 1.121 # @FUNCTION: has_ssp
589     # @DESCRIPTION:
590 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
591 solar 1.81 # indicate whether code for SSP is being generated
592 tseng 1.42 has_ssp() {
593 kevquinn 1.104 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
594 swegener 1.101
595 solar 1.81 # note; this matches both -fstack-protector and -fstack-protector-all
596 azarah 1.96 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
597     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
598     gcc-specs-ssp
599 tseng 1.42 }
600    
601 vapier 1.121 # @FUNCTION: has_m64
602     # @DESCRIPTION:
603     # This doesn't test if the flag is accepted, it tests if the flag actually
604     # WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works
605     # return code is 0, else the return code is 1.
606 lv 1.56 has_m64() {
607 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
608     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
609     # please dont replace this function with test_flag in some future
610     # clean-up!
611 swegener 1.101
612 vapier 1.72 local temp="$(emktemp)"
613 azarah 1.96 echo "int main() { return(0); }" > "${temp}".c
614 kugelfang 1.74 MY_CC=$(tc-getCC)
615 azarah 1.96 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
616 vapier 1.72 local ret=$?
617 azarah 1.96 rm -f "${temp}".c
618     [[ ${ret} != 1 ]] && return 0
619 lv 1.62 return 1
620 lv 1.56 }
621    
622 vapier 1.121 # @FUNCTION: has_m32
623     # @DESCRIPTION:
624     # This doesn't test if the flag is accepted, it tests if the flag actually
625     # WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return
626     # code is 0, else return code is 1.
627 lv 1.56 has_m32() {
628 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
629     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
630     # please dont replace this function with test_flag in some future
631     # clean-up!
632 eradicator 1.80
633     [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
634    
635 vapier 1.95 local temp=$(emktemp)
636     echo "int main() { return(0); }" > "${temp}".c
637 kugelfang 1.74 MY_CC=$(tc-getCC)
638 vapier 1.95 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
639 vapier 1.72 local ret=$?
640 vapier 1.95 rm -f "${temp}".c
641 azarah 1.96 [[ ${ret} != 1 ]] && return 0
642 lv 1.62 return 1
643 lv 1.56 }
644    
645 vapier 1.121 # @FUNCTION: replace-sparc64-flags
646     # @DESCRIPTION:
647     # Sets mcpu to v8 and uses the original value as mtune if none specified.
648 vapier 1.18 replace-sparc64-flags() {
649 fmccor 1.98 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
650 joker 1.16
651 mr_bones_ 1.83 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
652 agriffis 1.58 for x in ${SPARC64_CPUS}; do
653 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
654     done
655 mr_bones_ 1.83 else
656 swegener 1.111 for x in ${SPARC64_CPUS}; do
657 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
658     done
659     fi
660 mr_bones_ 1.83
661     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
662 agriffis 1.58 for x in ${SPARC64_CPUS}; do
663 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
664     done
665     else
666 swegener 1.111 for x in ${SPARC64_CPUS}; do
667 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
668     done
669     fi
670 vapier 1.59
671     export CFLAGS CXXFLAGS
672 solar 1.27 }
673    
674 abcd 1.147 # @FUNCTION: append-libs
675     # @USAGE: <libs>
676     # @DESCRIPTION:
677     # Add extra <libs> to the current LIBS.
678     append-libs() {
679     [[ -z $* ]] && return 0
680     local flag
681     for flag in "$@"; do
682     [[ ${flag} == -l* ]] && flag=${flag#-l}
683     export LIBS="${LIBS} -l${flag}"
684     done
685    
686     return 0
687     }
688    
689 vapier 1.121 # @FUNCTION: append-ldflags
690     # @USAGE: <flags>
691     # @DESCRIPTION:
692     # Add extra <flags> to the current LDFLAGS.
693 solar 1.27 append-ldflags() {
694 kevquinn 1.105 [[ -z $* ]] && return 0
695 flameeyes 1.123 local flag
696     for flag in "$@"; do
697     [[ ${flag} == -l* ]] && \
698     ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS"
699     done
700    
701 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
702 vapier 1.28 return 0
703 solar 1.27 }
704    
705 vapier 1.121 # @FUNCTION: filter-ldflags
706     # @USAGE: <flags>
707     # @DESCRIPTION:
708     # Remove particular <flags> from LDFLAGS. Accepts shell globs.
709 solar 1.41 filter-ldflags() {
710 kevquinn 1.105 _filter-var LDFLAGS "$@"
711 solar 1.41 return 0
712     }
713    
714 vapier 1.121 # @FUNCTION: raw-ldflags
715     # @USAGE: <flags>
716     # @DESCRIPTION:
717 kevquinn 1.105 # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
718     # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
719     # to gcc where it needs the '-Wl,'.
720 vapier 1.102 raw-ldflags() {
721     local x input="$@"
722     [[ -z ${input} ]] && input=${LDFLAGS}
723     set --
724     for x in ${input} ; do
725 vapier 1.103 x=${x#-Wl,}
726     set -- "$@" ${x//,/ }
727 vapier 1.102 done
728     echo "$@"
729     }
730    
731 ssuominen 1.145 # @FUNCTION: no-as-needed
732     # @RETURN: Flag to disable asneeded behavior for use with append-ldflags.
733     no-as-needed() {
734     case $($(tc-getLD) -v 2>&1 </dev/null) in
735     *GNU*) # GNU ld
736     echo "-Wl,--no-as-needed" ;;
737     esac
738     }
739 vapier 1.113
740     # Some tests for when we screw with things and want to make
741     # sure we didn't break anything
742     #TESTS() {
743     # CFLAGS="-a -b -c=1"
744     # CXXFLAGS="-x -y -z=2"
745     # LDFLAGS="-l -m -n=3"
746     #
747     # die() { exit 1; }
748     # (is-flag 1 2 3) && die
749     # (is-ldflag 1 2 3) && die
750     #
751     # is-flagq -l && die
752     # is-ldflagq -a && die
753     # is-flagq -a || die
754     # is-flagq -x || die
755     # is-ldflagq -n=* || die
756     # is-ldflagq -n && die
757     #
758     # strip-unsupported-flags
759     # [[ ${CFLAGS} == "-c=1" ]] || die
760     # [[ ${CXXFLAGS} == "-y -z=2" ]] || die
761     #
762     # echo "All tests pass"
763     #}
764     #TESTS

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