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

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

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

Revision 1.47 Revision 1.101
1# Copyright 1999-2003 Gentoo Technologies, Inc. 1# Copyright 1999-2005 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.47 2004/04/12 02:33:29 swtaylor Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.101 2006/01/01 01:14:59 swegener Exp $
4#
5# Author Bart Verwilst <verwilst@gentoo.org>
6 4
7ECLASS=flag-o-matic 5
8INHERITED="$INHERITED $ECLASS" 6# need access to emktemp()
7inherit eutils toolchain-funcs multilib
9 8
10# 9#
11#### filter-flags <flags> #### 10#### filter-flags <flags> ####
12# Remove particular flags from C[XX]FLAGS 11# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags 12# Matches only complete flags
16# Add extra flags to your current C[XX]FLAGS 15# Add extra flags to your current C[XX]FLAGS
17# 16#
18#### replace-flags <orig.flag> <new.flag> ### 17#### replace-flags <orig.flag> <new.flag> ###
19# Replace a flag by another one 18# Replace a flag by another one
20# 19#
21#### replace-cpu-flags <new.cpu> <old.cpus> ### 20#### replace-cpu-flags <old.cpus> <new.cpu> ###
22# Replace march/mcpu flags that specify <old.cpus> 21# Replace march/mcpu flags that specify <old.cpus>
23# with flags that specify <new.cpu> 22# with flags that specify <new.cpu>
24# 23#
25#### is-flag <flag> #### 24#### is-flag <flag> ####
26# Returns "true" if flag is set in C[XX]FLAGS 25# Returns "true" if flag is set in C[XX]FLAGS
51# 50#
52#### filter-ldflags <flags> #### 51#### filter-ldflags <flags> ####
53# Remove particular flags from LDFLAGS 52# Remove particular flags from LDFLAGS
54# Matches only complete flags 53# Matches only complete flags
55# 54#
56#### etexec-flags ####
57# hooked function for hardened-gcc that appends
58# -yet_exec {C,CXX,LD}FLAGS when hardened-gcc is installed
59# and a package is filtering -fPIC,-fpic, -fPIE, -fpie
60#
61#### fstack-flags #### 55#### fstack-flags ####
62# hooked function for hardened-gcc that appends 56# hooked function for hardened gcc that appends
63# -yno_propolice to {C,CXX,LD}FLAGS when hardened-gcc is installed 57# -fno-stack-protector to {C,CXX,LD}FLAGS
64# and a package is filtering -fstack-protector, -fstack-protector-all 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#
62#### bindnow-flags ####
63# Returns the flags to enable "now" binding in the current selected linker.
64#
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#### 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
65# 92#
66 93
67# C[XX]FLAGS that we allow in strip-flags 94# C[XX]FLAGS that we allow in strip-flags
68setup-allowed-flags() { 95setup-allowed-flags() {
69 if [ -z "${ALLOWED_FLAGS}" ] ; then 96 if [[ -z ${ALLOWED_FLAGS} ]] ; then
70 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g" 97 export ALLOWED_FLAGS="-pipe"
71 case "${ARCH}" in 98 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
72 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 99 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
73 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 100 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
74 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 101 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
75 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 102 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
76 esac
77 fi 103 fi
104 # allow a bunch of flags that negate features / control ABI
105 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
106 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
107 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
108 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
109 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
110 -mieee -mieee-with-inexact \
111 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
112 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
113 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
114 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias"
78 115
79 # C[XX]FLAGS that we are think is ok, but needs testing 116 # C[XX]FLAGS that we are think is ok, but needs testing
80 # NOTE: currently -Os have issues with gcc3 and K6* arch's 117 # NOTE: currently -Os have issues with gcc3 and K6* arch's
81 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 118 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
82 return 0 119 return 0
83} 120}
84 121
85filter-flags() { 122filter-flags() {
123 local x f fset
124 declare -a new_CFLAGS new_CXXFLAGS
125
86 for x in "$@" ; do 126 for x in "$@" ; do
87 case "${x}" in 127 case "${x}" in
88 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; 128 -fPIC|-fpic|-fPIE|-fpie|-pie)
129 append-flags `test_flag -fno-pie`;;
89 -fstack-protector|-fstack-protector-all) fstack-flags;; 130 -fstack-protector|-fstack-protector-all)
90 *) ;; 131 fstack-flags;;
91 esac 132 esac
92 done 133 done
93 134
94 # we do this fancy spacing stuff so as to not filter 135 for fset in CFLAGS CXXFLAGS; do
95 # out part of a flag ... we want flag atoms ! :D 136 # Looping over the flags instead of using a global
96 CFLAGS=" ${CFLAGS} " 137 # substitution ensures that we're working with flag atoms.
97 CXXFLAGS=" ${CXXFLAGS} " 138 # Otherwise globs like -O* have the potential to wipe out the
139 # list of flags.
140 for f in ${!fset}; do
98 for x in "$@" ; do 141 for x in "$@"; do
99 CFLAGS="${CFLAGS// ${x} / }" 142 # Note this should work with globs like -O*
100 CXXFLAGS="${CXXFLAGS// ${x} / }" 143 [[ ${f} == ${x} ]] && continue 2
144 done
145 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
101 done 146 done
102 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 147 eval export ${fset}=\${new_${fset}\[*]}
103 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 148 done
149
104 return 0 150 return 0
105} 151}
106 152
107filter-lfs-flags() { 153filter-lfs-flags() {
154 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
108 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 155 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
109} 156}
110 157
158append-lfs-flags() {
159 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
160 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
161}
162
111append-flags() { 163append-flags() {
164 [[ -z $* ]] && return 0
112 export CFLAGS="${CFLAGS} $@" 165 export CFLAGS="${CFLAGS} $*"
113 export CXXFLAGS="${CXXFLAGS} $@" 166 export CXXFLAGS="${CXXFLAGS} $*"
114 [ "`is-flag -fno-stack-protector`" -o "`is-flag -fno-stack-protector-all`" ] && fstack-flags 167 [ -n "`is-flag -fno-stack-protector`" -o \
168 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
115 return 0 169 return 0
116} 170}
117 171
118replace-flags() { 172replace-flags() {
119 # we do this fancy spacing stuff so as to not filter 173 [[ $# != 2 ]] \
120 # out part of a flag ... we want flag atoms ! :D 174 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
121 CFLAGS=" ${CFLAGS} " 175 && die "replace-flags takes 2 arguments, not $#"
122 CXXFLAGS=" ${CXXFLAGS} " 176
123 CFLAGS="${CFLAGS// ${1} / ${2} }" 177 local f fset
124 CXXFLAGS="${CXXFLAGS// ${1} / ${2} }" 178 declare -a new_CFLAGS new_CXXFLAGS
125 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 179
126 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 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
127 return 0 193 return 0
128} 194}
129 195
130replace-cpu-flags() { 196replace-cpu-flags() {
131 local newcpu="$1" ; shift 197 local newcpu="$#" ; newcpu="${!newcpu}"
132 local oldcpu="" 198 while [ $# -gt 1 ] ; do
133 for oldcpu in "$@" ; do 199 # quote to make sure that no globbing is done (particularly on
200 # ${oldcpu} prior to calling replace-flags
134 replace-flags -march=${oldcpu} -march=${newcpu} 201 replace-flags "-march=${1}" "-march=${newcpu}"
135 replace-flags -mcpu=${oldcpu} -mcpu=${newcpu} 202 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
136 replace-flags -mtune=${oldcpu} -mtune=${newcpu} 203 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
204 shift
137 done 205 done
138 return 0 206 return 0
139} 207}
140 208
141is-flag() { 209is-flag() {
210 local x
211
142 for x in ${CFLAGS} ${CXXFLAGS} ; do 212 for x in ${CFLAGS} ${CXXFLAGS} ; do
213 # Note this should work with globs like -mcpu=ultrasparc*
143 if [ "${x}" == "$1" ] ; then 214 if [[ ${x} == ${1} ]]; then
144 echo true 215 echo true
145 return 0 216 return 0
146 fi 217 fi
147 done 218 done
148 return 1 219 return 1
149} 220}
150 221
151filter-mfpmath() { 222filter-mfpmath() {
223 local orig_mfpmath new_math prune_math
224
152 # save the original -mfpmath flag 225 # save the original -mfpmath flag
153 local orig_mfpmath="`get-flag -mfpmath`" 226 orig_mfpmath="`get-flag -mfpmath`"
154 # get the value of the current -mfpmath flag 227 # get the value of the current -mfpmath flag
155 local new_math=" `get-flag mfpmath | tr , ' '` " 228 new_math=" `get-flag mfpmath | tr , ' '` "
156 # figure out which math values are to be removed 229 # figure out which math values are to be removed
157 local prune_math="" 230 prune_math=""
158 for prune_math in "$@" ; do 231 for prune_math in "$@" ; do
159 new_math="${new_math/ ${prune_math} / }" 232 new_math="${new_math/ ${prune_math} / }"
160 done 233 done
161 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" 234 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
162 235
171 fi 244 fi
172 return 0 245 return 0
173} 246}
174 247
175strip-flags() { 248strip-flags() {
249 local x y flag NEW_CFLAGS NEW_CXXFLAGS
250
176 setup-allowed-flags 251 setup-allowed-flags
177 252
178 local NEW_CFLAGS="" 253 local NEW_CFLAGS=""
179 local NEW_CXXFLAGS="" 254 local NEW_CXXFLAGS=""
180 255
181 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 256 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
182 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then 257 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
183 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
184 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 258 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
185 fi 259 fi
186 260
187 set -f 261 set -f # disable pathname expansion
188 262
189 for x in ${CFLAGS} 263 for x in ${CFLAGS}; do
190 do
191 for y in ${ALLOWED_FLAGS} 264 for y in ${ALLOWED_FLAGS}; do
192 do
193 flag=${x%%=*} 265 flag=${x%%=*}
194 if [ "${flag%%${y}}" = "" ] 266 if [ "${flag%%${y}}" = "" ] ; then
195 then
196 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 267 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
197 break 268 break
198 fi 269 fi
199 done 270 done
200 done 271 done
201 272
202 for x in ${CXXFLAGS} 273 for x in ${CXXFLAGS}; do
203 do
204 for y in ${ALLOWED_FLAGS} 274 for y in ${ALLOWED_FLAGS}; do
205 do
206 flag=${x%%=*} 275 flag=${x%%=*}
207 if [ "${flag%%${y}}" = "" ] 276 if [ "${flag%%${y}}" = "" ] ; then
208 then
209 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 277 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
210 break 278 break
211 fi 279 fi
212 done 280 done
213 done 281 done
218 fi 286 fi
219 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then 287 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
220 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" 288 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
221 fi 289 fi
222 290
223 set +f 291 set +f # re-enable pathname expansion
224
225 [ `use debug` ] \
226 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
227 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
228 292
229 export CFLAGS="${NEW_CFLAGS}" 293 export CFLAGS="${NEW_CFLAGS}"
230 export CXXFLAGS="${NEW_CXXFLAGS}" 294 export CXXFLAGS="${NEW_CXXFLAGS}"
231 return 0 295 return 0
232} 296}
233 297
298test-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
311test-flag-CC() { test-flag-PROG "CC" "$1"; }
312
313# Returns true if C++ compiler support given flag
314test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
315
316test-flags-PROG() {
317 local comp=$1
318 local flags
319 local x
320
321 shift
322
323 [[ -z ${comp} ]] && \
324 return 1
325
326 for x in "$@" ; do
327 test-flag-${comp} "${x}" && flags="${flags} ${x}"
328 done
329
330 echo "${flags}"
331
332 # Just bail if we dont have any flags
333 [[ -n ${flags} ]]
334}
335
336# Returns (echo's) the given flags supported by the C compiler
337test-flags-CC() { test-flags-PROG "CC" "$@"; }
338
339# Returns (echo's) the given flags supported by the C++ compiler
340test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
341
342# Short-hand that should hopefully work for both C and C++ compiler, but
343# its really only present due to the append-flags() abomination.
344test-flags() { test-flags-CC "$@"; }
345
346# Depriciated, use test-flags()
234test_flag() { 347test_flag() {
235 if [ -z "`gcc -S -xc "$@" -o /dev/null /dev/null 2>&1`" ]; then 348 addwrite "/dev/stderr"
236 echo "$@" 349 ewarn "test_flag: deprecated, please use test-flags()!" >/dev/stderr
350
351 test-flags-CC "$@"
352}
353
354test_version_info() {
355 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
237 return 0 356 return 0
238 fi 357 else
239 return 1 358 return 1
359 fi
240} 360}
241 361
242strip-unsupported-flags() { 362strip-unsupported-flags() {
363 local x NEW_CFLAGS NEW_CXXFLAGS
364
243 for x in ${CFLAGS} ; do 365 for x in ${CFLAGS} ; do
244 NEW_CFLAGS=${NEW_CFLAGS}" ""`test_flag ${x}`" 366 NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})"
245 done 367 done
246 for x in ${CXXFLAGS} ; do 368 for x in ${CXXFLAGS} ; do
247 NEW_CXXFLAGS=${NEW_CXXFLAGS}" ""`test_flag ${x}`" 369 NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})"
248 done 370 done
249 371
250 export CFLAGS="${NEW_CFLAGS}" 372 export CFLAGS=${NEW_CFLAGS}
251 export CXXFLAGS="${NEW_CXXFLAGS}" 373 export CXXFLAGS=${NEW_CXXFLAGS}
252} 374}
253 375
254get-flag() { 376get-flag() {
377 local f findflag="$1"
378
255 # this code looks a little flaky but seems to work for 379 # this code looks a little flaky but seems to work for
256 # everything we want ... 380 # everything we want ...
257 # for example, if CFLAGS="-march=i686": 381 # for example, if CFLAGS="-march=i686":
258 # `get-flags -march` == "-march=i686" 382 # `get-flag -march` == "-march=i686"
259 # `get-flags march` == "i686" 383 # `get-flag march` == "i686"
260 local findflag="$1"
261 for f in ${CFLAGS} ${CXXFLAGS} ; do 384 for f in ${CFLAGS} ${CXXFLAGS} ; do
262 if [ "${f/${findflag}}" != "${f}" ] ; then 385 if [ "${f/${findflag}}" != "${f}" ] ; then
263 echo "${f/-${findflag}=}" 386 printf "%s\n" "${f/-${findflag}=}"
264 return 0 387 return 0
265 fi 388 fi
266 done 389 done
267 return 1 390 return 1
268} 391}
269 392
393# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
394has_hardened() {
395 addwrite "/dev/stderr"
396 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" \
397 >/dev/stderr
398
399 test_version_info Hardened && return 0
400 # The specs file wont exist unless gcc has GCC_SPECS support
401 [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
402}
403
404# DEPRECATED - use gcc-specs-pie from toolchain-funcs
405# indicate whether PIC is set
270has_pic() { 406has_pic() {
271 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 407 addwrite "/dev/stderr"
272 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 408 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >/dev/stderr
273 has_version sys-devel/hardened-gcc && return 0 409
274 [ ! -z "`${CC/ .*/} --version| grep pie`" ] && return 0 410 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
411 ${CFLAGS/-fpic} != ${CFLAGS} || \
412 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]]
413}
414
415# DEPRECATED - use gcc-specs-pie from toolchain-funcs
416# indicate whether PIE is set
417has_pie() {
418 addwrite "/dev/stderr"
419 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >/dev/stderr
420
421 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
422 ${CFLAGS/-fpie} != ${CFLAGS} || \
423 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__) || \
424 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]]
425 # test PIC while waiting for specs to be updated to generate __PIE__
426}
427
428# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
429# indicate whether code for SSP is being generated for all functions
430has_ssp_all() {
431 addwrite "/dev/stderr"
432 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >/dev/stderr
433
434 # note; this matches only -fstack-protector-all
435 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
436 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
437 gcc-specs-ssp
438}
439
440# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
441# indicate whether code for SSP is being generated
442has_ssp() {
443 addwrite "/dev/stderr"
444 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >/dev/stderr
445
446 # note; this matches both -fstack-protector and -fstack-protector-all
447 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
448 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
449 gcc-specs-ssp
450}
451
452has_m64() {
453 # this doesnt test if the flag is accepted, it tests if the flag
454 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
455 # please dont replace this function with test_flag in some future
456 # clean-up!
457
458 local temp="$(emktemp)"
459 echo "int main() { return(0); }" > "${temp}".c
460 MY_CC=$(tc-getCC)
461 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
462 local ret=$?
463 rm -f "${temp}".c
464 [[ ${ret} != 1 ]] && return 0
275 return 1 465 return 1
276} 466}
277 467
278has_pie() { 468has_m32() {
279 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 469 # this doesnt test if the flag is accepted, it tests if the flag
280 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 470 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
281 has_version sys-devel/hardened-gcc && return 0 471 # please dont replace this function with test_flag in some future
282 [ ! -z "`${CC/ .*/} --version| grep pie`" ] && return 0 472 # clean-up!
473
474 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
475
476 local temp=$(emktemp)
477 echo "int main() { return(0); }" > "${temp}".c
478 MY_CC=$(tc-getCC)
479 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
480 local ret=$?
481 rm -f "${temp}".c
482 [[ ${ret} != 1 ]] && return 0
283 return 1 483 return 1
284} 484}
285
286has_ssp() {
287 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
288 has_version sys-devel/hardened-gcc && return 0
289 [ ! -z "`${CC/ .*/} --version| grep ssp`" ] && return 0
290 return 1
291}
292 485
293replace-sparc64-flags() { 486replace-sparc64-flags() {
294 local SPARC64_CPUS="ultrasparc v9" 487 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
295 488
296 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] 489 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
297 then
298 for x in ${SPARC64_CPUS} 490 for x in ${SPARC64_CPUS}; do
299 do
300 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 491 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
301 done 492 done
302 else 493 else
303 for x in ${SPARC64_CPUS} 494 for x in ${SPARC64_CPUS}; do
304 do
305 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 495 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
306 done 496 done
307 fi 497 fi
308 498
309 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] 499 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
310 then
311 for x in ${SPARC64_CPUS} 500 for x in ${SPARC64_CPUS}; do
312 do
313 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 501 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
314 done 502 done
315 else 503 else
316 for x in ${SPARC64_CPUS} 504 for x in ${SPARC64_CPUS}; do
317 do
318 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 505 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
319 done 506 done
320 fi 507 fi
508
509 export CFLAGS CXXFLAGS
321} 510}
322 511
323append-ldflags() { 512append-ldflags() {
324 LDFLAGS="${LDFLAGS} $@" 513 export LDFLAGS="${LDFLAGS} $*"
325 return 0 514 return 0
326} 515}
327 516
328filter-ldflags() { 517filter-ldflags() {
518 local x
519
329 # we do this fancy spacing stuff so as to not filter 520 # we do this fancy spacing stuff so as to not filter
330 # out part of a flag ... we want flag atoms ! :D 521 # out part of a flag ... we want flag atoms ! :D
331 LDFLAGS=" ${LDFLAGS} " 522 LDFLAGS=" ${LDFLAGS} "
332 for x in "$@" ; do 523 for x in "$@" ; do
333 LDFLAGS="${LDFLAGS// ${x} / }" 524 LDFLAGS=${LDFLAGS// ${x} / }
334 done 525 done
526 [[ -z ${LDFLAGS// } ]] \
527 && LDFLAGS="" \
335 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" 528 || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
529 export LDFLAGS
336 return 0 530 return 0
337}
338
339etexec-flags() {
340 has_pie || has_pic
341 if [ $? == 0 ] ; then
342 [ -z "`is-flag -yet_exec`" ] &&
343 export CFLAGS="${CFLAGS} `test_flag -yet_exec`"
344 [ -z "`is-flag -nopie`" ] &&
345 export CFLAGS="${CFLAGS} `test_flag -nopie`"
346 fi
347} 531}
348 532
349fstack-flags() { 533fstack-flags() {
350 has_ssp 534 if gcc-specs-ssp; then
351 if [ $? == 0 ] ; then 535 [ -z "`is-flag -fno-stack-protector`" ] &&
352 [ -z "`is-flag -yno_propolice`" ] &&
353 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" 536 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
354 fi 537 fi
538 return 0
355} 539}
540
541# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
542# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
543# fixes.
544#
545# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
546gcc2-flags() {
547 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
548 CFLAGS=${CFLAGS//-mtune=/-mcpu=}
549 CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
550 fi
551
552 replace-cpu-flags k6-{2,3} k6
553 replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
554
555 replace-cpu-flags pentium-mmx i586
556 replace-cpu-flags pentium{2,3,4} i686
557
558 replace-cpu-flags ev6{7,8} ev6
559
560 export CFLAGS CXXFLAGS
561}
562
563# Gets the flags needed for "NOW" binding
564bindnow-flags() {
565 case $($(tc-getLD) -v 2>&1 </dev/null) in
566 *GNU* | *'with BFD'*) # GNU ld
567 echo "-Wl,-z,now" ;;
568 *Apple*) # Darwin ld
569 echo "-bind_at_load" ;;
570 *)
571 # Some linkers just recognize -V instead of -v
572 case $($(tc-getLD) -V 2>&1 </dev/null) in
573 *Solaris*) # Solaris accept almost the same GNU options
574 echo "-Wl,-z,now" ;;
575 esac
576 ;;
577 esac
578}

Legend:
Removed from v.1.47  
changed lines
  Added in v.1.101

  ViewVC Help
Powered by ViewVC 1.1.20