/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.63 Revision 1.119
1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2007 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 1.63 2004/07/18 04:59:30 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.119 2007/05/12 11:45:51 vapier Exp $
4# 4#
5# Author Bart Verwilst <verwilst@gentoo.org> 5# Maintainer: toolchain@gentoo.org
6 6
7ECLASS=flag-o-matic 7# need access to emktemp()
8INHERITED="$INHERITED $ECLASS" 8inherit eutils toolchain-funcs multilib
9
10IUSE="debug"
11 9
12# 10#
13#### filter-flags <flags> #### 11#### filter-flags <flags> ####
14# Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
15# Matches only complete flags 13# Matches only complete flags
18# Add extra flags to your current C[XX]FLAGS 16# Add extra flags to your current C[XX]FLAGS
19# 17#
20#### replace-flags <orig.flag> <new.flag> ### 18#### replace-flags <orig.flag> <new.flag> ###
21# Replace a flag by another one 19# Replace a flag by another one
22# 20#
23#### replace-cpu-flags <new.cpu> <old.cpus> ### 21#### replace-cpu-flags <old.cpus> <new.cpu> ###
24# Replace march/mcpu flags that specify <old.cpus> 22# Replace march/mcpu flags that specify <old.cpus>
25# with flags that specify <new.cpu> 23# with flags that specify <new.cpu>
26# 24#
27#### is-flag <flag> #### 25#### is-flag[q] <flag> ####
28# Returns "true" if flag is set in C[XX]FLAGS 26# Returns "true" if flag is set in C[XX]FLAGS
29# Matches only complete a flag 27# Matches only complete a flag
28# q version sets return code but doesn't echo
29#
30#### is-ldflag[q] <flag> ####
31# Returns "true" if flag is set in LDFLAGS
32# Matches only complete a flag
33# q version sets return code but doesn't echo
30# 34#
31#### strip-flags #### 35#### strip-flags ####
32# Strip C[XX]FLAGS of everything except known 36# Strip C[XX]FLAGS of everything except known
33# good options. 37# good options.
34# 38#
53# 57#
54#### filter-ldflags <flags> #### 58#### filter-ldflags <flags> ####
55# Remove particular flags from LDFLAGS 59# Remove particular flags from LDFLAGS
56# Matches only complete flags 60# Matches only complete flags
57# 61#
58#### etexec-flags #### 62#### bindnow-flags ####
59# hooked function for hardened gcc that appends 63# Returns the flags to enable "now" binding in the current selected linker.
60# -fno-pic to {C,CXX,LD}FLAGS
61# when a package is filtering -fpic, -fPIC, -fpie, -fPIE
62# 64#
63#### fstack-flags #### 65################ DEPRECATED functions ################
64# hooked function for hardened gcc that appends 66# The following are still present to avoid breaking existing
65# -fno-stack-protector to {C,CXX,LD}FLAGS 67# code more than necessary; however they are deprecated. Please
66# when a package is filtering -fstack-protector, -fstack-protector-all 68# use gcc-specs-* from toolchain-funcs.eclass instead, if you
67# notice: modern automatic specs files will also suppress -fstack-protector-all 69# need to know which hardened techs are active in the compiler.
68# when only -fno-stack-protector is given 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
69# 92#
70 93
71# C[XX]FLAGS that we allow in strip-flags 94# C[XX]FLAGS that we allow in strip-flags
95# Note: shell globs and character lists are allowed
72setup-allowed-flags() { 96setup-allowed-flags() {
73 if [ -z "${ALLOWED_FLAGS}" ] ; then 97 if [[ -z ${ALLOWED_FLAGS} ]] ; then
74 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -fno-unit-at-a-time -pipe -g" 98 export ALLOWED_FLAGS="-pipe"
75 case "${ARCH}" in 99 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
76 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 100 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
77 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;; 101 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking"
78 x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;; 102 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time"
79 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 103 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+"
80 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 104 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident"
81 esac
82 fi 105 fi
106 # allow a bunch of flags that negate features / control ABI
107 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \
108 -fno-strict-aliasing -fno-bounds-checking"
109 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
110 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
111 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
112 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
113 -mieee -mieee-with-inexact -mschedule \
114 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
115 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
116 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
117 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \
118 -msecure-plt -D*"
83 119
84 # C[XX]FLAGS that we are think is ok, but needs testing 120 # C[XX]FLAGS that we are think is ok, but needs testing
85 # NOTE: currently -Os have issues with gcc3 and K6* arch's 121 # NOTE: currently -Os have issues with gcc3 and K6* arch's
86 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 122 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
87 return 0 123 return 0
124}
125
126# inverted filters for hardened compiler. This is trying to unpick
127# the hardened compiler defaults.
128_filter-hardened() {
129 local f
130 for f in "$@" ; do
131 case "${f}" in
132 # Ideally we should only concern ourselves with PIE flags,
133 # not -fPIC or -fpic, but too many places filter -fPIC without
134 # thinking about -fPIE.
135 -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
136 gcc-specs-pie || continue
137 is-flagq -nopie || append-flags -nopie;;
138 -fstack-protector)
139 gcc-specs-ssp || continue
140 is-flagq -fno-stack-protector || append-flags -fno-stack-protector;;
141 -fstack-protector-all)
142 gcc-specs-ssp-to-all || continue
143 is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;;
144 esac
145 done
146}
147
148# Remove occurrences of strings from variable given in $1
149# Strings removed are matched as globs, so for example
150# '-O*' would remove -O1, -O2 etc.
151_filter-var() {
152 local f x VAR VAL
153 declare -a new
154
155 VAR=$1
156 shift
157 eval VAL=\${${VAR}}
158 for f in ${VAL}; do
159 for x in "$@"; do
160 # Note this should work with globs like -O*
161 [[ ${f} == ${x} ]] && continue 2
162 done
163 eval new\[\${\#new\[@]}]=\${f}
164 done
165 eval export ${VAR}=\${new\[*]}
88} 166}
89 167
90filter-flags() { 168filter-flags() {
91 local x f fset 169 _filter-hardened "$@"
92 declare -a new_CFLAGS new_CXXFLAGS 170 _filter-var CFLAGS "$@"
93 171 _filter-var CPPFLAGS "$@"
94 for x in "$@" ; do 172 _filter-var CXXFLAGS "$@"
95 case "${x}" in
96 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;;
97 -fstack-protector|-fstack-protector-all) fstack-flags;;
98 esac
99 done
100
101 for fset in CFLAGS CXXFLAGS; do
102 for f in ${!fset}; do
103 for x in "$@"; do
104 # Note this should work with globs like -O*
105 [[ ${f} == ${x} ]] && continue 2
106 done
107 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
108 done
109 eval export ${fset}=\${new_${fset}\[*]}
110 done
111
112 return 0 173 return 0
113} 174}
114 175
115filter-lfs-flags() { 176filter-lfs-flags() {
177 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
116 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 178 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
117} 179}
118 180
181append-cppflags() {
182 [[ -z $* ]] && return 0
183 export CPPFLAGS="${CPPFLAGS} $*"
184 return 0
185}
186
119append-lfs-flags() { 187append-lfs-flags() {
188 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
120 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 189 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
121} 190}
122 191
123append-flags() { 192append-flags() {
193 [[ -z $* ]] && return 0
124 export CFLAGS="${CFLAGS} $*" 194 export CFLAGS="${CFLAGS} $*"
125 export CXXFLAGS="${CXXFLAGS} $*" 195 export CXXFLAGS="${CXXFLAGS} $*"
126 [ -n "`is-flag -fno-stack-protector`" -o \
127 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
128 return 0 196 return 0
129} 197}
130 198
131replace-flags() { 199replace-flags() {
132 # we do this fancy spacing stuff so as to not filter 200 [[ $# != 2 ]] \
133 # out part of a flag ... we want flag atoms ! :D 201 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
134 CFLAGS=" ${CFLAGS} " 202 && die "replace-flags takes 2 arguments, not $#"
135 CXXFLAGS=" ${CXXFLAGS} " 203
136 CFLAGS="${CFLAGS// ${1} / ${2} }" 204 local f fset
137 CXXFLAGS="${CXXFLAGS// ${1} / ${2} }" 205 declare -a new_CFLAGS new_CXXFLAGS
138 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 206
139 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 207 for fset in CFLAGS CXXFLAGS; do
140 export CFLAGS CXXFLAGS 208 # 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
141 return 0 220 return 0
142} 221}
143 222
144replace-cpu-flags() { 223replace-cpu-flags() {
145 local oldcpu newcpu="$1" ; shift 224 local newcpu="$#" ; newcpu="${!newcpu}"
146 for oldcpu in "$@" ; do 225 while [ $# -gt 1 ] ; do
226 # quote to make sure that no globbing is done (particularly on
227 # ${oldcpu}) prior to calling replace-flags
147 replace-flags -march=${oldcpu} -march=${newcpu} 228 replace-flags "-march=${1}" "-march=${newcpu}"
148 replace-flags -mcpu=${oldcpu} -mcpu=${newcpu} 229 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
149 replace-flags -mtune=${oldcpu} -mtune=${newcpu} 230 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
231 shift
150 done 232 done
233 return 0
234}
235
236_is_flagq() {
237 local x
238 for x in ${!1} ; do
239 [[ ${x} == $2 ]] && return 0
240 done
151 return 0 241 return 1
242}
243
244is-flagq() {
245 [[ -n $2 ]] && die "Usage: is-flag <flag>"
246 _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1
152} 247}
153 248
154is-flag() { 249is-flag() {
155 local x 250 is-flagq "$@" && echo true
251}
156 252
157 for x in ${CFLAGS} ${CXXFLAGS} ; do 253is-ldflagq() {
158 if [ "${x}" == "$1" ] ; then 254 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
159 echo true 255 _is_flagq LDFLAGS $1
160 return 0 256}
161 fi 257
162 done 258is-ldflag() {
163 return 1 259 is-ldflagq "$@" && echo true
164} 260}
165 261
166filter-mfpmath() { 262filter-mfpmath() {
167 local orig_mfpmath new_math prune_math 263 local orig_mfpmath new_math prune_math
168 264
169 # save the original -mfpmath flag 265 # save the original -mfpmath flag
170 orig_mfpmath="`get-flag -mfpmath`" 266 orig_mfpmath=$(get-flag -mfpmath)
171 # get the value of the current -mfpmath flag 267 # get the value of the current -mfpmath flag
172 new_math=" `get-flag mfpmath | tr , ' '` " 268 new_math=$(get-flag mfpmath)
269 new_math=" ${new_math//,/ } "
173 # figure out which math values are to be removed 270 # figure out which math values are to be removed
174 prune_math="" 271 prune_math=""
175 for prune_math in "$@" ; do 272 for prune_math in "$@" ; do
176 new_math="${new_math/ ${prune_math} / }" 273 new_math=${new_math/ ${prune_math} / }
177 done 274 done
178 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" 275 new_math=$(echo ${new_math})
276 new_math=${new_math// /,}
179 277
180 if [ -z "${new_math}" ] ; then 278 if [[ -z ${new_math} ]] ; then
181 # if we're removing all user specified math values are 279 # if we're removing all user specified math values are
182 # slated for removal, then we just filter the flag 280 # slated for removal, then we just filter the flag
183 filter-flags ${orig_mfpmath} 281 filter-flags ${orig_mfpmath}
184 else 282 else
185 # if we only want to filter some of the user specified 283 # if we only want to filter some of the user specified
196 294
197 local NEW_CFLAGS="" 295 local NEW_CFLAGS=""
198 local NEW_CXXFLAGS="" 296 local NEW_CXXFLAGS=""
199 297
200 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 298 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
201 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then 299 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
202 use debug && einfo "Enabling the use of some unstable flags"
203 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 300 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
204 fi 301 fi
205 302
206 set -f # disable pathname expansion 303 set -f # disable pathname expansion
207 304
208 for x in ${CFLAGS}; do 305 for x in ${CFLAGS}; do
209 for y in ${ALLOWED_FLAGS}; do 306 for y in ${ALLOWED_FLAGS}; do
210 flag=${x%%=*} 307 flag=${x%%=*}
211 if [ "${flag%%${y}}" = "" ] || [ "${flag:0:5}" = "-fno-" ] || [ "${flag:0:5}" = "-mno-" ] ; then 308 if [ "${flag%%${y}}" = "" ] ; then
212 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 309 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
213 break 310 break
214 fi 311 fi
215 done 312 done
216 done 313 done
217 314
218 for x in ${CXXFLAGS}; do 315 for x in ${CXXFLAGS}; do
219 for y in ${ALLOWED_FLAGS}; do 316 for y in ${ALLOWED_FLAGS}; do
220 flag=${x%%=*} 317 flag=${x%%=*}
221 if [ "${flag%%${y}}" = "" ] || [ "${flag:0:5}" = "-fno-" ] || [ "${flag:0:5}" = "-mno-" ] ; then 318 if [ "${flag%%${y}}" = "" ] ; then
222 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 319 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
223 break 320 break
224 fi 321 fi
225 done 322 done
226 done 323 done
238 export CFLAGS="${NEW_CFLAGS}" 335 export CFLAGS="${NEW_CFLAGS}"
239 export CXXFLAGS="${NEW_CXXFLAGS}" 336 export CXXFLAGS="${NEW_CXXFLAGS}"
240 return 0 337 return 0
241} 338}
242 339
340test-flag-PROG() {
341 local comp=$1
342 local flags="$2"
343
344 [[ -z ${comp} || -z ${flags} ]] && \
345 return 1
346
347 local PROG=$(tc-get${comp})
348 ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
349 > /dev/null 2>&1
350}
351
352# Returns true if C compiler support given flag
353test-flag-CC() { test-flag-PROG "CC" "$1"; }
354
355# Returns true if C++ compiler support given flag
356test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
357
358test-flags-PROG() {
359 local comp=$1
360 local flags
361 local x
362
363 shift
364
365 [[ -z ${comp} ]] && return 1
366
367 x=""
368 for x in "$@" ; do
369 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
370 done
371
372 echo "${flags}"
373
374 # Just bail if we dont have any flags
375 [[ -n ${flags} ]]
376}
377
378# Returns (echo's) the given flags supported by the C compiler
379test-flags-CC() { test-flags-PROG "CC" "$@"; }
380
381# Returns (echo's) the given flags supported by the C++ compiler
382test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
383
384# Short-hand that should hopefully work for both C and C++ compiler, but
385# its really only present due to the append-flags() abomination.
386test-flags() { test-flags-CC "$@"; }
387
388# Depriciated, use test-flags()
243test_flag() { 389test_flag() {
244 local cc=${CC:-gcc} ; cc=${cc%% *} 390 ewarn "test_flag: deprecated, please use test-flags()!" >&2
245 if ${cc} -S -xc "$@" -o /dev/null /dev/null &>/dev/null; then 391
246 printf "%s\n" "$*" 392 test-flags-CC "$@"
247 return 0
248 fi
249 return 1
250} 393}
251 394
252test_version_info() { 395test_version_info() {
253 local cc=${CC:-gcc} ; cc=${cc%% *}
254 if [[ $(${cc} --version 2>&1) == *$1* ]]; then 396 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
255 return 0 397 return 0
256 else 398 else
257 return 1 399 return 1
258 fi 400 fi
259} 401}
260 402
261strip-unsupported-flags() { 403strip-unsupported-flags() {
262 local NEW_CFLAGS NEW_CXXFLAGS 404 export CFLAGS=$(test-flags-CC ${CFLAGS})
263 405 export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
264 for x in ${CFLAGS} ; do
265 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
266 done
267 for x in ${CXXFLAGS} ; do
268 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
269 done
270
271 export CFLAGS="${NEW_CFLAGS}"
272 export CXXFLAGS="${NEW_CXXFLAGS}"
273} 406}
274 407
275get-flag() { 408get-flag() {
276 local f findflag="$1" 409 local f findflag="$1"
277 410
287 fi 420 fi
288 done 421 done
289 return 1 422 return 1
290} 423}
291 424
425# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
292has_hardened() { 426has_hardened() {
427 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
428
293 test_version_info Hardened 429 test_version_info Hardened && return 0
294 return $? 430 # The specs file wont exist unless gcc has GCC_SPECS support
431 [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
295} 432}
296 433
434# DEPRECATED - use gcc-specs-pie from toolchain-funcs
435# indicate whether PIC is set
297has_pic() { 436has_pic() {
298 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 437 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
299 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
300 test_version_info pie && return 0
301 return 1
302}
303 438
439 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
440 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
441 gcc-specs-pie
442}
443
444# DEPRECATED - use gcc-specs-pie from toolchain-funcs
445# indicate whether PIE is set
304has_pie() { 446has_pie() {
305 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 447 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
306 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 448
307 test_version_info pie && return 0 449 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
308 return 1 450 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
451 gcc-specs-pie
309} 452}
310 453
454# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
455# indicate whether code for SSP is being generated for all functions
456has_ssp_all() {
457 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
458
459 # note; this matches only -fstack-protector-all
460 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
461 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
462 gcc-specs-ssp-all
463}
464
465# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
466# indicate whether code for SSP is being generated
311has_ssp() { 467has_ssp() {
468 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
469
470 # note; this matches both -fstack-protector and -fstack-protector-all
312 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 471 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
313 test_version_info ssp && return 0 472 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
314 return 1 473 gcc-specs-ssp
315} 474}
316 475
317has_m64() { 476has_m64() {
318 # this doesnt test if the flag is accepted, it tests if the flag 477 # this doesnt test if the flag is accepted, it tests if the flag
319 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 478 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
320 # please dont replace this function with test_flag in some future 479 # please dont replace this function with test_flag in some future
321 # clean-up! 480 # clean-up!
322 temp=`mktemp` 481
482 local temp="$(emktemp)"
323 echo "int main() { return(0); }" > ${temp}.c 483 echo "int main() { return(0); }" > "${temp}".c
324 ${CC/ .*/} -m64 -o /dev/null ${temp}.c > /dev/null 2>&1 484 MY_CC=$(tc-getCC)
325 ret=$? 485 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
486 local ret=$?
326 rm -f ${temp}.c 487 rm -f "${temp}".c
327 [ "$ret" != "1" ] && return 0 488 [[ ${ret} != 1 ]] && return 0
328 return 1 489 return 1
329} 490}
330 491
331has_m32() { 492has_m32() {
332 # this doesnt test if the flag is accepted, it tests if the flag 493 # this doesnt test if the flag is accepted, it tests if the flag
333 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 494 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
334 # please dont replace this function with test_flag in some future 495 # please dont replace this function with test_flag in some future
335 # clean-up! 496 # clean-up!
336 temp=`mktemp` 497
498 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
499
500 local temp=$(emktemp)
337 echo "int main() { return(0); }" > ${temp}.c 501 echo "int main() { return(0); }" > "${temp}".c
338 ${CC/ .*/} -m32 -o /dev/null ${temp}.c > /dev/null 2>&1 502 MY_CC=$(tc-getCC)
339 ret=$? 503 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
504 local ret=$?
340 rm -f ${temp}.c 505 rm -f "${temp}".c
341 [ "$ret" != "1" ] && return 0 506 [[ ${ret} != 1 ]] && return 0
342 return 1 507 return 1
343} 508}
344 509
345replace-sparc64-flags() { 510replace-sparc64-flags() {
346 local SPARC64_CPUS="ultrasparc v9" 511 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
347 512
348 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then 513 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
349 for x in ${SPARC64_CPUS}; do 514 for x in ${SPARC64_CPUS}; do
350 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 515 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
351 done 516 done
352 else 517 else
353 for x in ${SPARC64_CPUS}; do 518 for x in ${SPARC64_CPUS}; do
354 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 519 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
355 done 520 done
356 fi 521 fi
357 522
358 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then 523 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
359 for x in ${SPARC64_CPUS}; do 524 for x in ${SPARC64_CPUS}; do
360 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 525 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
361 done 526 done
362 else 527 else
363 for x in ${SPARC64_CPUS}; do 528 for x in ${SPARC64_CPUS}; do
364 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 529 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
365 done 530 done
366 fi 531 fi
367 532
368 export CFLAGS CXXFLAGS 533 export CFLAGS CXXFLAGS
369} 534}
370 535
371append-ldflags() { 536append-ldflags() {
537 [[ -z $* ]] && return 0
372 export LDFLAGS="${LDFLAGS} $*" 538 export LDFLAGS="${LDFLAGS} $*"
373 return 0 539 return 0
374} 540}
375 541
542# Remove flags from LDFLAGS - it's up to the ebuild to filter
543# CFLAGS and CXXFLAGS via filter-flags if they need to.
376filter-ldflags() { 544filter-ldflags() {
377 local x 545 _filter-var LDFLAGS "$@"
546 return 0
547}
378 548
379 # we do this fancy spacing stuff so as to not filter 549# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
380 # out part of a flag ... we want flag atoms ! :D 550# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
381 LDFLAGS=" ${LDFLAGS} " 551# to gcc where it needs the '-Wl,'.
552raw-ldflags() {
553 local x input="$@"
554 [[ -z ${input} ]] && input=${LDFLAGS}
555 set --
382 for x in "$@" ; do 556 for x in ${input} ; do
383 LDFLAGS="${LDFLAGS// ${x} / }" 557 x=${x#-Wl,}
558 set -- "$@" ${x//,/ }
384 done 559 done
385 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" 560 echo "$@"
386 export LDFLAGS
387 return 0
388} 561}
389 562
390etexec-flags() { 563# Gets the flags needed for "NOW" binding
391 # if you're not using a hardened compiler you wont need this 564bindnow-flags() {
392 # PIC/no-pic kludge in the first place. 565 case $($(tc-getLD) -v 2>&1 </dev/null) in
393 has_hardened || return 0 566 *GNU* | *'with BFD'*) # GNU ld
394 567 echo "-Wl,-z,now" ;;
395 if has_pie || has_pic; then 568 *Apple*) # Darwin ld
396 [ -z "`is-flag -fno-pic`" ] && 569 echo "-bind_at_load" ;;
397 export CFLAGS="${CFLAGS} `test_flag -fno-pic`" 570 *)
398 [ -z "`is-flag -nopie`" ] && 571 # Some linkers just recognize -V instead of -v
399 export CFLAGS="${CFLAGS} `test_flag -nopie`" 572 case $($(tc-getLD) -V 2>&1 </dev/null) in
400 fi 573 *Solaris*) # Solaris accept almost the same GNU options
401 return 0 574 echo "-Wl,-z,now" ;;
575 esac
576 ;;
577 esac
402} 578}
403 579
404fstack-flags() { 580
405 if has_ssp; then 581# Some tests for when we screw with things and want to make
406 [ -z "`is-flag -fno-stack-protector`" ] && 582# sure we didn't break anything
407 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" 583#TESTS() {
408 fi 584# CFLAGS="-a -b -c=1"
409 return 0 585# CXXFLAGS="-x -y -z=2"
410} 586# LDFLAGS="-l -m -n=3"
587#
588# die() { exit 1; }
589# (is-flag 1 2 3) && die
590# (is-ldflag 1 2 3) && die
591#
592# is-flagq -l && die
593# is-ldflagq -a && die
594# is-flagq -a || die
595# is-flagq -x || die
596# is-ldflagq -n=* || die
597# is-ldflagq -n && die
598#
599# strip-unsupported-flags
600# [[ ${CFLAGS} == "-c=1" ]] || die
601# [[ ${CXXFLAGS} == "-y -z=2" ]] || die
602#
603# echo "All tests pass"
604#}
605#TESTS

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