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Revision 1.96 - (hide annotations) (download)
Thu Dec 8 12:16:12 2005 UTC (8 years, 11 months ago) by azarah
Branch: MAIN
Changes since 1.95: +69 -34 lines
Cleanups.

1 vapier 1.84 # Copyright 1999-2005 Gentoo Foundation
2 verwilst 1.1 # Distributed under the terms of the GNU General Public License v2
3 azarah 1.96 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.95 2005/10/13 05:33:34 vapier Exp $
4 azarah 1.8
5 vapier 1.63
6 vapier 1.72 # need access to emktemp()
7 eradicator 1.80 inherit eutils toolchain-funcs multilib
8 vapier 1.72
9 verwilst 1.2 #
10 vapier 1.18 #### filter-flags <flags> ####
11 verwilst 1.3 # Remove particular flags from C[XX]FLAGS
12 vapier 1.18 # Matches only complete flags
13 verwilst 1.2 #
14 vapier 1.18 #### append-flags <flags> ####
15 verwilst 1.3 # Add extra flags to your current C[XX]FLAGS
16     #
17 verwilst 1.4 #### replace-flags <orig.flag> <new.flag> ###
18 verwilst 1.3 # Replace a flag by another one
19     #
20 vapier 1.70 #### replace-cpu-flags <old.cpus> <new.cpu> ###
21 vapier 1.37 # Replace march/mcpu flags that specify <old.cpus>
22     # with flags that specify <new.cpu>
23     #
24 danarmak 1.7 #### is-flag <flag> ####
25     # Returns "true" if flag is set in C[XX]FLAGS
26 vapier 1.18 # Matches only complete a flag
27 danarmak 1.7 #
28 azarah 1.8 #### strip-flags ####
29     # Strip C[XX]FLAGS of everything except known
30     # good options.
31     #
32 puggy 1.29 #### strip-unsupported-flags ####
33     # Strip C[XX]FLAGS of any flags not supported by
34     # installed version of gcc
35     #
36 vapier 1.10 #### get-flag <flag> ####
37     # Find and echo the value for a particular flag
38     #
39 joker 1.16 #### replace-sparc64-flags ####
40     # Sets mcpu to v8 and uses the original value
41     # as mtune if none specified.
42     #
43 vapier 1.26 #### filter-mfpmath <math types> ####
44     # Remove specified math types from the fpmath specification
45     # If the user has -mfpmath=sse,386, running `filter-mfpmath sse`
46     # will leave the user with -mfpmath=386
47 solar 1.27 #
48     #### append-ldflags ####
49     # Add extra flags to your current LDFLAGS
50     #
51 solar 1.41 #### filter-ldflags <flags> ####
52     # Remove particular flags from LDFLAGS
53     # Matches only complete flags
54     #
55 solar 1.27 #### fstack-flags ####
56 pappy 1.50 # hooked function for hardened gcc that appends
57     # -fno-stack-protector to {C,CXX,LD}FLAGS
58     # when a package is filtering -fstack-protector, -fstack-protector-all
59     # notice: modern automatic specs files will also suppress -fstack-protector-all
60     # when only -fno-stack-protector is given
61 solar 1.27 #
62 flameeyes 1.94 #### bindnow-flags ####
63     # Returns the flags to enable "now" binding in the current selected linker.
64 kevquinn 1.92 #
65     ################ DEPRECATED functions ################
66     # The following are still present to avoid breaking existing
67     # code more than necessary; however they are deprecated. Please
68     # use gcc-specs-* from toolchain-funcs.eclass instead, if you
69     # need to know which hardened techs are active in the compiler.
70     # See bug #100974
71     #
72     #### has_hardened ####
73     # Returns true if the compiler has 'Hardened' in its version string,
74     # (note; switched-spec vanilla compilers satisfy this condition) or
75     # the specs file name contains 'hardened'.
76     #
77     #### has_pie ####
78     # Returns true if the compiler by default or with current CFLAGS
79     # builds position-independent code.
80     #
81 solar 1.86 #### has_pic ####
82     # Returns true if the compiler by default or with current CFLAGS
83     # builds position-independent code.
84     #
85     #### has_ssp_all ####
86     # Returns true if the compiler by default or with current CFLAGS
87     # generates stack smash protections for all functions
88     #
89     #### has_ssp ####
90     # Returns true if the compiler by default or with current CFLAGS
91     # generates stack smash protections for most vulnerable functions
92     #
93 verwilst 1.3
94 azarah 1.17 # C[XX]FLAGS that we allow in strip-flags
95 vapier 1.36 setup-allowed-flags() {
96 vapier 1.84 if [[ -z ${ALLOWED_FLAGS} ]] ; then
97 vapier 1.76 export ALLOWED_FLAGS="-pipe"
98     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
99 vapier 1.87 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
100     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
101 vapier 1.76 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
102     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
103 vapier 1.44 fi
104 vapier 1.65 # allow a bunch of flags that negate features / control ABI
105     ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
106 vapier 1.87 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
107     -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
108     -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
109     -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
110 agriffis 1.90 -mieee -mieee-with-inexact \
111 vapier 1.91 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
112 vapier 1.87 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
113     -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
114     -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias"
115 vapier 1.36
116     # C[XX]FLAGS that we are think is ok, but needs testing
117     # NOTE: currently -Os have issues with gcc3 and K6* arch's
118     export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
119     return 0
120 aliz 1.24 }
121 verwilst 1.13
122 vapier 1.18 filter-flags() {
123 mr_bones_ 1.83 local x f fset
124 agriffis 1.61 declare -a new_CFLAGS new_CXXFLAGS
125 agriffis 1.58
126 vapier 1.36 for x in "$@" ; do
127 solar 1.27 case "${x}" in
128 solar 1.82 -fPIC|-fpic|-fPIE|-fpie|-pie)
129     append-flags `test_flag -fno-pie`;;
130     -fstack-protector|-fstack-protector-all)
131     fstack-flags;;
132 solar 1.27 esac
133     done
134 vapier 1.36
135 agriffis 1.61 for fset in CFLAGS CXXFLAGS; do
136 agriffis 1.64 # Looping over the flags instead of using a global
137     # substitution ensures that we're working with flag atoms.
138     # Otherwise globs like -O* have the potential to wipe out the
139     # list of flags.
140 agriffis 1.61 for f in ${!fset}; do
141     for x in "$@"; do
142     # Note this should work with globs like -O*
143     [[ ${f} == ${x} ]] && continue 2
144     done
145     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
146     done
147     eval export ${fset}=\${new_${fset}\[*]}
148 verwilst 1.1 done
149 agriffis 1.61
150 vapier 1.36 return 0
151 verwilst 1.2 }
152    
153 vapier 1.40 filter-lfs-flags() {
154 vapier 1.93 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
155 vapier 1.40 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
156     }
157    
158 vapier 1.48 append-lfs-flags() {
159 vapier 1.93 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
160 vapier 1.48 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
161     }
162    
163 vapier 1.18 append-flags() {
164 solar 1.82 [[ -z $* ]] && return 0
165 agriffis 1.58 export CFLAGS="${CFLAGS} $*"
166     export CXXFLAGS="${CXXFLAGS} $*"
167     [ -n "`is-flag -fno-stack-protector`" -o \
168     -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
169 vapier 1.28 return 0
170 verwilst 1.1 }
171    
172 vapier 1.18 replace-flags() {
173 vapier 1.93 [[ $# != 2 ]] \
174     && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
175     && die "replace-flags takes 2 arguments, not $#"
176    
177 mr_bones_ 1.83 local f fset
178 agriffis 1.64 declare -a new_CFLAGS new_CXXFLAGS
179    
180     for fset in CFLAGS CXXFLAGS; do
181     # Looping over the flags instead of using a global
182     # substitution ensures that we're working with flag atoms.
183     # Otherwise globs like -O* have the potential to wipe out the
184     # list of flags.
185     for f in ${!fset}; do
186     # Note this should work with globs like -O*
187     [[ ${f} == ${1} ]] && f=${2}
188     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
189     done
190     eval export ${fset}=\${new_${fset}\[*]}
191     done
192    
193 vapier 1.28 return 0
194 danarmak 1.7 }
195    
196 vapier 1.37 replace-cpu-flags() {
197 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
198     while [ $# -gt 1 ] ; do
199 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
200     # ${oldcpu} prior to calling replace-flags
201 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
202     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
203     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
204     shift
205 vapier 1.37 done
206     return 0
207     }
208    
209 danarmak 1.7 is-flag() {
210 agriffis 1.58 local x
211    
212 vapier 1.18 for x in ${CFLAGS} ${CXXFLAGS} ; do
213 agriffis 1.67 # Note this should work with globs like -mcpu=ultrasparc*
214     if [[ ${x} == ${1} ]]; then
215 azarah 1.8 echo true
216 vapier 1.18 return 0
217     fi
218 danarmak 1.7 done
219 vapier 1.18 return 1
220 verwilst 1.1 }
221 azarah 1.8
222 vapier 1.36 filter-mfpmath() {
223 agriffis 1.58 local orig_mfpmath new_math prune_math
224    
225 vapier 1.36 # save the original -mfpmath flag
226 agriffis 1.58 orig_mfpmath="`get-flag -mfpmath`"
227 vapier 1.36 # get the value of the current -mfpmath flag
228 agriffis 1.58 new_math=" `get-flag mfpmath | tr , ' '` "
229 vapier 1.36 # figure out which math values are to be removed
230 agriffis 1.58 prune_math=""
231 vapier 1.36 for prune_math in "$@" ; do
232     new_math="${new_math/ ${prune_math} / }"
233     done
234     new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
235    
236     if [ -z "${new_math}" ] ; then
237     # if we're removing all user specified math values are
238     # slated for removal, then we just filter the flag
239     filter-flags ${orig_mfpmath}
240     else
241     # if we only want to filter some of the user specified
242     # math values, then we replace the current flag
243     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
244     fi
245     return 0
246     }
247    
248 azarah 1.8 strip-flags() {
249 agriffis 1.58 local x y flag NEW_CFLAGS NEW_CXXFLAGS
250    
251 vapier 1.36 setup-allowed-flags
252    
253 azarah 1.8 local NEW_CFLAGS=""
254     local NEW_CXXFLAGS=""
255    
256 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
257 vapier 1.84 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
258 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
259     fi
260    
261 agriffis 1.58 set -f # disable pathname expansion
262 azarah 1.8
263 agriffis 1.58 for x in ${CFLAGS}; do
264     for y in ${ALLOWED_FLAGS}; do
265 lostlogic 1.14 flag=${x%%=*}
266 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
267 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
268     break
269 azarah 1.8 fi
270     done
271     done
272    
273 agriffis 1.58 for x in ${CXXFLAGS}; do
274     for y in ${ALLOWED_FLAGS}; do
275 lostlogic 1.14 flag=${x%%=*}
276 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
277 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
278     break
279 azarah 1.8 fi
280     done
281     done
282 azarah 1.30
283     # In case we filtered out all optimization flags fallback to -O2
284     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
285     NEW_CFLAGS="${NEW_CFLAGS} -O2"
286     fi
287     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
288     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
289     fi
290 azarah 1.8
291 agriffis 1.58 set +f # re-enable pathname expansion
292 azarah 1.8
293     export CFLAGS="${NEW_CFLAGS}"
294     export CXXFLAGS="${NEW_CXXFLAGS}"
295 vapier 1.36 return 0
296 puggy 1.29 }
297    
298 azarah 1.96 test-flag-PROG() {
299     local comp=$1
300     local flags="$2"
301    
302     [[ -z ${comp} || -z ${flags} ]] && \
303     return 1
304    
305     local PROG=$(tc-get${comp})
306     ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
307     > /dev/null 2>&1
308     }
309    
310     # Returns true if C compiler support given flag
311     test-flag-CC() { test-flag-PROG "CC" "$1"; }
312    
313     # Returns true if C++ compiler support given flag
314     test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
315    
316     test-flags() {
317     local x
318    
319     for x in "$@" ; do
320     test-flag-CC "${x}" || return 1
321     done
322    
323     echo "$@"
324    
325     return 0
326     }
327    
328     # Depriciated, use test-flags()
329 vapier 1.36 test_flag() {
330 azarah 1.96 ewarn "test_flag: deprecated, please use test-flags()!" >/dev/stderr
331    
332     test-flags "$@"
333 puggy 1.29 }
334    
335 agriffis 1.58 test_version_info() {
336 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
337 agriffis 1.58 return 0
338     else
339     return 1
340     fi
341     }
342    
343 puggy 1.29 strip-unsupported-flags() {
344 vapier 1.95 local x NEW_CFLAGS NEW_CXXFLAGS
345 agriffis 1.58
346 vapier 1.36 for x in ${CFLAGS} ; do
347 azarah 1.96 NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})"
348 puggy 1.29 done
349 vapier 1.36 for x in ${CXXFLAGS} ; do
350 azarah 1.96 NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})"
351 puggy 1.29 done
352    
353 vapier 1.95 export CFLAGS=${NEW_CFLAGS}
354     export CXXFLAGS=${NEW_CXXFLAGS}
355 azarah 1.8 }
356    
357 vapier 1.10 get-flag() {
358 agriffis 1.58 local f findflag="$1"
359    
360 vapier 1.36 # this code looks a little flaky but seems to work for
361     # everything we want ...
362     # for example, if CFLAGS="-march=i686":
363 agriffis 1.58 # `get-flag -march` == "-march=i686"
364     # `get-flag march` == "i686"
365 vapier 1.10 for f in ${CFLAGS} ${CXXFLAGS} ; do
366     if [ "${f/${findflag}}" != "${f}" ] ; then
367 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
368 vapier 1.28 return 0
369 vapier 1.10 fi
370     done
371 vapier 1.28 return 1
372 joker 1.16 }
373    
374 kevquinn 1.92 # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
375 solar 1.53 has_hardened() {
376 azarah 1.96 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" \
377     >/dev/stderr
378    
379 lv 1.69 test_version_info Hardened && return 0
380 azarah 1.96 # The specs file wont exist unless gcc has GCC_SPECS support
381     [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
382 solar 1.53 }
383    
384 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
385 solar 1.81 # indicate whether PIC is set
386 tseng 1.42 has_pic() {
387 azarah 1.96 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >/dev/stderr
388    
389     [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
390     ${CFLAGS/-fpic} != ${CFLAGS} || \
391     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]]
392 tseng 1.42 }
393    
394 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
395 solar 1.81 # indicate whether PIE is set
396 mr_bones_ 1.83 has_pie() {
397 azarah 1.96 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >/dev/stderr
398    
399     [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
400     ${CFLAGS/-fpie} != ${CFLAGS} || \
401     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__) || \
402     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]]
403 solar 1.81 # test PIC while waiting for specs to be updated to generate __PIE__
404 tseng 1.42 }
405 mr_bones_ 1.83
406 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
407 solar 1.86 # indicate whether code for SSP is being generated for all functions
408     has_ssp_all() {
409 azarah 1.96 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >/dev/stderr
410    
411 solar 1.86 # note; this matches only -fstack-protector-all
412 azarah 1.96 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
413     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
414     gcc-specs-ssp
415 solar 1.86 }
416    
417 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
418 solar 1.81 # indicate whether code for SSP is being generated
419 tseng 1.42 has_ssp() {
420 azarah 1.96 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >/dev/stderr
421    
422 solar 1.81 # note; this matches both -fstack-protector and -fstack-protector-all
423 azarah 1.96 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
424     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
425     gcc-specs-ssp
426 tseng 1.42 }
427    
428 lv 1.56 has_m64() {
429 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
430     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
431     # please dont replace this function with test_flag in some future
432     # clean-up!
433 azarah 1.96
434 vapier 1.72 local temp="$(emktemp)"
435 azarah 1.96 echo "int main() { return(0); }" > "${temp}".c
436 kugelfang 1.74 MY_CC=$(tc-getCC)
437 azarah 1.96 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
438 vapier 1.72 local ret=$?
439 azarah 1.96 rm -f "${temp}".c
440     [[ ${ret} != 1 ]] && return 0
441 lv 1.62 return 1
442 lv 1.56 }
443    
444     has_m32() {
445 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
446     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
447     # please dont replace this function with test_flag in some future
448     # clean-up!
449 eradicator 1.80
450     [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
451    
452 vapier 1.95 local temp=$(emktemp)
453     echo "int main() { return(0); }" > "${temp}".c
454 kugelfang 1.74 MY_CC=$(tc-getCC)
455 vapier 1.95 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
456 vapier 1.72 local ret=$?
457 vapier 1.95 rm -f "${temp}".c
458 azarah 1.96 [[ ${ret} != 1 ]] && return 0
459 lv 1.62 return 1
460 lv 1.56 }
461    
462 vapier 1.18 replace-sparc64-flags() {
463 joker 1.16 local SPARC64_CPUS="ultrasparc v9"
464    
465 mr_bones_ 1.83 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
466 agriffis 1.58 for x in ${SPARC64_CPUS}; do
467 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
468     done
469 mr_bones_ 1.83 else
470 agriffis 1.58 for x in ${SPARC64_CPUS}; do
471 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
472     done
473     fi
474 mr_bones_ 1.83
475     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
476 agriffis 1.58 for x in ${SPARC64_CPUS}; do
477 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
478     done
479     else
480 agriffis 1.58 for x in ${SPARC64_CPUS}; do
481 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
482     done
483     fi
484 vapier 1.59
485     export CFLAGS CXXFLAGS
486 solar 1.27 }
487    
488     append-ldflags() {
489 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
490 vapier 1.28 return 0
491 solar 1.27 }
492    
493 solar 1.41 filter-ldflags() {
494 agriffis 1.58 local x
495    
496 solar 1.41 # we do this fancy spacing stuff so as to not filter
497     # out part of a flag ... we want flag atoms ! :D
498     LDFLAGS=" ${LDFLAGS} "
499     for x in "$@" ; do
500 vapier 1.84 LDFLAGS=${LDFLAGS// ${x} / }
501 solar 1.41 done
502 vapier 1.84 [[ -z ${LDFLAGS// } ]] \
503     && LDFLAGS="" \
504     || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
505 vapier 1.59 export LDFLAGS
506 solar 1.41 return 0
507     }
508    
509 solar 1.27 fstack-flags() {
510 kevquinn 1.92 if gcc-specs-ssp; then
511 mr_bones_ 1.83 [ -z "`is-flag -fno-stack-protector`" ] &&
512 agriffis 1.58 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
513 solar 1.35 fi
514 agriffis 1.58 return 0
515 vapier 1.10 }
516 vapier 1.73
517     # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
518     # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
519     # fixes.
520     #
521     # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
522     gcc2-flags() {
523 vapier 1.85 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
524     CFLAGS=${CFLAGS//-mtune=/-mcpu=}
525     CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
526 vapier 1.73 fi
527    
528 vapier 1.85 replace-cpu-flags k6-{2,3} k6
529     replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
530    
531     replace-cpu-flags pentium-mmx i586
532     replace-cpu-flags pentium{2,3,4} i686
533    
534     replace-cpu-flags ev6{7,8} ev6
535    
536 vapier 1.73 export CFLAGS CXXFLAGS
537     }
538 flameeyes 1.94
539     # Gets the flags needed for "NOW" binding
540     bindnow-flags() {
541     case $($(tc-getLD) -v 2>&1 </dev/null) in
542     *GNU* | *'with BFD'*) # GNU ld
543     echo "-Wl,-z,now" ;;
544     *Apple*) # Darwin ld
545     echo "-bind_at_load" ;;
546     *)
547     # Some linkers just recognize -V instead of -v
548     case $($(tc-getLD) -V 2>&1 </dev/null) in
549     *Solaris*) # Solaris accept almost the same GNU options
550     echo "-Wl,-z,now" ;;
551     esac
552     ;;
553     esac
554     }

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