/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.79 Revision 1.117
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 1.79 2004/12/25 18:45:56 chriswhite Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.117 2007/03/04 21:13:17 vapier Exp $
4# 4#
5# Author Bart Verwilst <verwilst@gentoo.org> 5# Maintainer: toolchain@gentoo.org
6
7ECLASS=flag-o-matic
8INHERITED="$INHERITED $ECLASS"
9
10IUSE="debug"
11 6
12# need access to emktemp() 7# need access to emktemp()
13inherit eutils toolchain-funcs 8inherit eutils toolchain-funcs multilib
14 9
15# 10#
16#### filter-flags <flags> #### 11#### filter-flags <flags> ####
17# Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
18# Matches only complete flags 13# Matches only complete flags
25# 20#
26#### replace-cpu-flags <old.cpus> <new.cpu> ### 21#### replace-cpu-flags <old.cpus> <new.cpu> ###
27# Replace march/mcpu flags that specify <old.cpus> 22# Replace march/mcpu flags that specify <old.cpus>
28# with flags that specify <new.cpu> 23# with flags that specify <new.cpu>
29# 24#
30#### is-flag <flag> #### 25#### is-flag[q] <flag> ####
31# Returns "true" if flag is set in C[XX]FLAGS 26# Returns "true" if flag is set in C[XX]FLAGS
32# 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
33# 34#
34#### strip-flags #### 35#### strip-flags ####
35# Strip C[XX]FLAGS of everything except known 36# Strip C[XX]FLAGS of everything except known
36# good options. 37# good options.
37# 38#
56# 57#
57#### filter-ldflags <flags> #### 58#### filter-ldflags <flags> ####
58# Remove particular flags from LDFLAGS 59# Remove particular flags from LDFLAGS
59# Matches only complete flags 60# Matches only complete flags
60# 61#
61#### etexec-flags #### 62#### bindnow-flags ####
62# hooked function for hardened gcc that appends 63# Returns the flags to enable "now" binding in the current selected linker.
63# -fno-pic to {C,CXX,LD}FLAGS
64# when a package is filtering -fpic, -fPIC, -fpie, -fPIE
65# 64#
66#### fstack-flags #### 65################ DEPRECATED functions ################
67# hooked function for hardened gcc that appends 66# The following are still present to avoid breaking existing
68# -fno-stack-protector to {C,CXX,LD}FLAGS 67# code more than necessary; however they are deprecated. Please
69# when a package is filtering -fstack-protector, -fstack-protector-all 68# use gcc-specs-* from toolchain-funcs.eclass instead, if you
70# notice: modern automatic specs files will also suppress -fstack-protector-all 69# need to know which hardened techs are active in the compiler.
71# 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
72# 92#
73 93
74# 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
75setup-allowed-flags() { 96setup-allowed-flags() {
76 if [ -z "${ALLOWED_FLAGS}" ] ; then 97 if [[ -z ${ALLOWED_FLAGS} ]] ; then
77 export ALLOWED_FLAGS="-pipe" 98 export ALLOWED_FLAGS="-pipe"
78 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" 99 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
79 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fno-stack-protector" 100 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
101 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
80 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time" 102 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time"
81 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" 103 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+"
82 case "${ARCH}" in
83 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;;
84 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;;
85 x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;;
86 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
87 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
88 sparc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32 -m64" ;;
89 ppc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mabi" ;; 104 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident"
90 esac
91 fi 105 fi
92 # allow a bunch of flags that negate features / control ABI 106 # allow a bunch of flags that negate features / control ABI
93 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" 107 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
94 case "${ARCH}" in 108 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
95 x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;; 109 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
96 esac 110 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
97 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs -msoft-float -mflat -mno-faster-structs -mfaster-structs -mlittle-endian -mbig-endian -mlive-g0 -mcmodel -mno-stack-bias -mstack-bias" 111 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
112 -mieee -mieee-with-inexact -mschedule \
113 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
114 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
115 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
116 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \
117 -msecure-plt -D*"
98 118
99 # C[XX]FLAGS that we are think is ok, but needs testing 119 # C[XX]FLAGS that we are think is ok, but needs testing
100 # NOTE: currently -Os have issues with gcc3 and K6* arch's 120 # NOTE: currently -Os have issues with gcc3 and K6* arch's
101 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 121 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
102 return 0 122 return 0
123}
124
125# inverted filters for hardened compiler. This is trying to unpick
126# the hardened compiler defaults.
127_filter-hardened() {
128 local f
129 for f in "$@" ; do
130 case "${f}" in
131 # Ideally we should only concern ourselves with PIE flags,
132 # not -fPIC or -fpic, but too many places filter -fPIC without
133 # thinking about -fPIE.
134 -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
135 gcc-specs-pie || continue
136 is-flagq -nopie || append-flags -nopie;;
137 -fstack-protector)
138 gcc-specs-ssp || continue
139 is-flagq -fno-stack-protector || append-flags -fno-stack-protector;;
140 -fstack-protector-all)
141 gcc-specs-ssp-to-all || continue
142 is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;;
143 esac
144 done
145}
146
147# Remove occurrences of strings from variable given in $1
148# Strings removed are matched as globs, so for example
149# '-O*' would remove -O1, -O2 etc.
150_filter-var() {
151 local f x VAR VAL
152 declare -a new
153
154 VAR=$1
155 shift
156 eval VAL=\${${VAR}}
157 for f in ${VAL}; do
158 for x in "$@"; do
159 # Note this should work with globs like -O*
160 [[ ${f} == ${x} ]] && continue 2
161 done
162 eval new\[\${\#new\[@]}]=\${f}
163 done
164 eval export ${VAR}=\${new\[*]}
103} 165}
104 166
105filter-flags() { 167filter-flags() {
106 local x f fset 168 _filter-hardened "$@"
107 declare -a new_CFLAGS new_CXXFLAGS 169 _filter-var CFLAGS "$@"
108 170 _filter-var CXXFLAGS "$@"
109 for x in "$@" ; do
110 case "${x}" in
111 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;;
112 -fstack-protector|-fstack-protector-all) fstack-flags;;
113 esac
114 done
115
116 for fset in CFLAGS CXXFLAGS; do
117 # Looping over the flags instead of using a global
118 # substitution ensures that we're working with flag atoms.
119 # Otherwise globs like -O* have the potential to wipe out the
120 # list of flags.
121 for f in ${!fset}; do
122 for x in "$@"; do
123 # Note this should work with globs like -O*
124 [[ ${f} == ${x} ]] && continue 2
125 done
126 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
127 done
128 eval export ${fset}=\${new_${fset}\[*]}
129 done
130
131 return 0 171 return 0
132} 172}
133 173
134filter-lfs-flags() { 174filter-lfs-flags() {
175 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
135 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 176 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
136} 177}
137 178
138append-lfs-flags() { 179append-lfs-flags() {
180 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
139 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 181 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
140} 182}
141 183
142append-flags() { 184append-flags() {
185 [[ -z $* ]] && return 0
143 export CFLAGS="${CFLAGS} $*" 186 export CFLAGS="${CFLAGS} $*"
144 export CXXFLAGS="${CXXFLAGS} $*" 187 export CXXFLAGS="${CXXFLAGS} $*"
145 [ -n "`is-flag -fno-stack-protector`" -o \
146 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
147 return 0 188 return 0
148} 189}
149 190
150replace-flags() { 191replace-flags() {
192 [[ $# != 2 ]] \
193 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
194 && die "replace-flags takes 2 arguments, not $#"
195
151 local f fset 196 local f fset
152 declare -a new_CFLAGS new_CXXFLAGS 197 declare -a new_CFLAGS new_CXXFLAGS
153 198
154 for fset in CFLAGS CXXFLAGS; do 199 for fset in CFLAGS CXXFLAGS; do
155 # Looping over the flags instead of using a global 200 # Looping over the flags instead of using a global
156 # substitution ensures that we're working with flag atoms. 201 # substitution ensures that we're working with flag atoms.
169 214
170replace-cpu-flags() { 215replace-cpu-flags() {
171 local newcpu="$#" ; newcpu="${!newcpu}" 216 local newcpu="$#" ; newcpu="${!newcpu}"
172 while [ $# -gt 1 ] ; do 217 while [ $# -gt 1 ] ; do
173 # quote to make sure that no globbing is done (particularly on 218 # quote to make sure that no globbing is done (particularly on
174 # ${oldcpu} prior to calling replace-flags 219 # ${oldcpu}) prior to calling replace-flags
175 replace-flags "-march=${1}" "-march=${newcpu}" 220 replace-flags "-march=${1}" "-march=${newcpu}"
176 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" 221 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
177 replace-flags "-mtune=${1}" "-mtune=${newcpu}" 222 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
178 shift 223 shift
179 done 224 done
180 return 0 225 return 0
181} 226}
182 227
228_is_flagq() {
229 local x
230 for x in ${!1} ; do
231 [[ ${x} == $2 ]] && return 0
232 done
233 return 1
234}
235
236is-flagq() {
237 [[ -n $2 ]] && die "Usage: is-flag <flag>"
238 _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1
239}
240
183is-flag() { 241is-flag() {
184 local x 242 is-flagq "$@" && echo true
243}
185 244
186 for x in ${CFLAGS} ${CXXFLAGS} ; do 245is-ldflagq() {
187 # Note this should work with globs like -mcpu=ultrasparc* 246 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
188 if [[ ${x} == ${1} ]]; then 247 _is_flagq LDFLAGS $1
189 echo true 248}
190 return 0 249
191 fi 250is-ldflag() {
192 done 251 is-ldflagq "$@" && echo true
193 return 1
194} 252}
195 253
196filter-mfpmath() { 254filter-mfpmath() {
197 local orig_mfpmath new_math prune_math 255 local orig_mfpmath new_math prune_math
198 256
199 # save the original -mfpmath flag 257 # save the original -mfpmath flag
200 orig_mfpmath="`get-flag -mfpmath`" 258 orig_mfpmath=$(get-flag -mfpmath)
201 # get the value of the current -mfpmath flag 259 # get the value of the current -mfpmath flag
202 new_math=" `get-flag mfpmath | tr , ' '` " 260 new_math=$(get-flag mfpmath)
261 new_math=" ${new_math//,/ } "
203 # figure out which math values are to be removed 262 # figure out which math values are to be removed
204 prune_math="" 263 prune_math=""
205 for prune_math in "$@" ; do 264 for prune_math in "$@" ; do
206 new_math="${new_math/ ${prune_math} / }" 265 new_math=${new_math/ ${prune_math} / }
207 done 266 done
208 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" 267 new_math=$(echo ${new_math})
268 new_math=${new_math// /,}
209 269
210 if [ -z "${new_math}" ] ; then 270 if [[ -z ${new_math} ]] ; then
211 # if we're removing all user specified math values are 271 # if we're removing all user specified math values are
212 # slated for removal, then we just filter the flag 272 # slated for removal, then we just filter the flag
213 filter-flags ${orig_mfpmath} 273 filter-flags ${orig_mfpmath}
214 else 274 else
215 # if we only want to filter some of the user specified 275 # if we only want to filter some of the user specified
226 286
227 local NEW_CFLAGS="" 287 local NEW_CFLAGS=""
228 local NEW_CXXFLAGS="" 288 local NEW_CXXFLAGS=""
229 289
230 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 290 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
231 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then 291 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
232 use debug && einfo "Enabling the use of some unstable flags"
233 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 292 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
234 fi 293 fi
235 294
236 set -f # disable pathname expansion 295 set -f # disable pathname expansion
237 296
268 export CFLAGS="${NEW_CFLAGS}" 327 export CFLAGS="${NEW_CFLAGS}"
269 export CXXFLAGS="${NEW_CXXFLAGS}" 328 export CXXFLAGS="${NEW_CXXFLAGS}"
270 return 0 329 return 0
271} 330}
272 331
332test-flag-PROG() {
333 local comp=$1
334 local flags="$2"
335
336 [[ -z ${comp} || -z ${flags} ]] && \
337 return 1
338
339 local PROG=$(tc-get${comp})
340 ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
341 > /dev/null 2>&1
342}
343
344# Returns true if C compiler support given flag
345test-flag-CC() { test-flag-PROG "CC" "$1"; }
346
347# Returns true if C++ compiler support given flag
348test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
349
350test-flags-PROG() {
351 local comp=$1
352 local flags
353 local x
354
355 shift
356
357 [[ -z ${comp} ]] && return 1
358
359 x=""
360 for x in "$@" ; do
361 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
362 done
363
364 echo "${flags}"
365
366 # Just bail if we dont have any flags
367 [[ -n ${flags} ]]
368}
369
370# Returns (echo's) the given flags supported by the C compiler
371test-flags-CC() { test-flags-PROG "CC" "$@"; }
372
373# Returns (echo's) the given flags supported by the C++ compiler
374test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
375
376# Short-hand that should hopefully work for both C and C++ compiler, but
377# its really only present due to the append-flags() abomination.
378test-flags() { test-flags-CC "$@"; }
379
380# Depriciated, use test-flags()
273test_flag() { 381test_flag() {
274 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then 382 ewarn "test_flag: deprecated, please use test-flags()!" >&2
275 printf "%s\n" "$*" 383
276 return 0 384 test-flags-CC "$@"
277 fi
278 return 1
279} 385}
280 386
281test_version_info() { 387test_version_info() {
282 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then 388 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
283 return 0 389 return 0
285 return 1 391 return 1
286 fi 392 fi
287} 393}
288 394
289strip-unsupported-flags() { 395strip-unsupported-flags() {
290 local NEW_CFLAGS NEW_CXXFLAGS 396 export CFLAGS=$(test-flags-CC ${CFLAGS})
291 397 export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
292 for x in ${CFLAGS} ; do
293 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
294 done
295 for x in ${CXXFLAGS} ; do
296 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
297 done
298
299 export CFLAGS="${NEW_CFLAGS}"
300 export CXXFLAGS="${NEW_CXXFLAGS}"
301} 398}
302 399
303get-flag() { 400get-flag() {
304 local f findflag="$1" 401 local f findflag="$1"
305 402
315 fi 412 fi
316 done 413 done
317 return 1 414 return 1
318} 415}
319 416
417# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
320has_hardened() { 418has_hardened() {
419 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
420
321 test_version_info Hardened && return 0 421 test_version_info Hardened && return 0
322 # the specs file wont exist unless gcc has GCC_SPECS support 422 # The specs file wont exist unless gcc has GCC_SPECS support
323 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \ 423 [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
324 return 0
325 return 1
326} 424}
327 425
426# DEPRECATED - use gcc-specs-pie from toolchain-funcs
427# indicate whether PIC is set
328has_pic() { 428has_pic() {
329 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 429 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
330 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
331 test_version_info pie && return 0
332 return 1
333}
334 430
431 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
432 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
433 gcc-specs-pie
434}
435
436# DEPRECATED - use gcc-specs-pie from toolchain-funcs
437# indicate whether PIE is set
335has_pie() { 438has_pie() {
336 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 439 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
337 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 440
338 test_version_info pie && return 0 441 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
339 return 1 442 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
443 gcc-specs-pie
340} 444}
341 445
446# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
447# indicate whether code for SSP is being generated for all functions
448has_ssp_all() {
449 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
450
451 # note; this matches only -fstack-protector-all
452 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
453 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
454 gcc-specs-ssp-all
455}
456
457# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
458# indicate whether code for SSP is being generated
342has_ssp() { 459has_ssp() {
460 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
461
462 # note; this matches both -fstack-protector and -fstack-protector-all
343 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 463 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
344 test_version_info ssp && return 0 464 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
345 return 1 465 gcc-specs-ssp
346} 466}
347 467
348has_m64() { 468has_m64() {
349 # this doesnt test if the flag is accepted, it tests if the flag 469 # this doesnt test if the flag is accepted, it tests if the flag
350 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 470 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
351 # please dont replace this function with test_flag in some future 471 # please dont replace this function with test_flag in some future
352 # clean-up! 472 # clean-up!
473
353 local temp="$(emktemp)" 474 local temp="$(emktemp)"
354 echo "int main() { return(0); }" > ${temp}.c 475 echo "int main() { return(0); }" > "${temp}".c
355 MY_CC=$(tc-getCC) 476 MY_CC=$(tc-getCC)
356 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 477 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
357 local ret=$? 478 local ret=$?
358 rm -f ${temp}.c 479 rm -f "${temp}".c
359 [ "$ret" != "1" ] && return 0 480 [[ ${ret} != 1 ]] && return 0
360 return 1 481 return 1
361} 482}
362 483
363has_m32() { 484has_m32() {
364 # this doesnt test if the flag is accepted, it tests if the flag 485 # this doesnt test if the flag is accepted, it tests if the flag
365 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 486 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
366 # please dont replace this function with test_flag in some future 487 # please dont replace this function with test_flag in some future
367 # clean-up! 488 # clean-up!
489
490 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
491
368 local temp="$(emktemp)" 492 local temp=$(emktemp)
369 echo "int main() { return(0); }" > ${temp}.c 493 echo "int main() { return(0); }" > "${temp}".c
370 MY_CC=$(tc-getCC) 494 MY_CC=$(tc-getCC)
371 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 495 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
372 local ret=$? 496 local ret=$?
373 rm -f ${temp}.c 497 rm -f "${temp}".c
374 [ "$ret" != "1" ] && return 0 498 [[ ${ret} != 1 ]] && return 0
375 return 1 499 return 1
376} 500}
377 501
378replace-sparc64-flags() { 502replace-sparc64-flags() {
379 local SPARC64_CPUS="ultrasparc v9" 503 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
380 504
381 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then 505 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
382 for x in ${SPARC64_CPUS}; do 506 for x in ${SPARC64_CPUS}; do
383 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 507 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
384 done 508 done
385 else 509 else
386 for x in ${SPARC64_CPUS}; do 510 for x in ${SPARC64_CPUS}; do
387 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 511 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
388 done 512 done
389 fi 513 fi
390 514
391 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then 515 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
392 for x in ${SPARC64_CPUS}; do 516 for x in ${SPARC64_CPUS}; do
393 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 517 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
394 done 518 done
395 else 519 else
396 for x in ${SPARC64_CPUS}; do 520 for x in ${SPARC64_CPUS}; do
397 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 521 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
398 done 522 done
399 fi 523 fi
400 524
401 export CFLAGS CXXFLAGS 525 export CFLAGS CXXFLAGS
402} 526}
403 527
404append-ldflags() { 528append-ldflags() {
529 [[ -z $* ]] && return 0
405 export LDFLAGS="${LDFLAGS} $*" 530 export LDFLAGS="${LDFLAGS} $*"
406 return 0 531 return 0
407} 532}
408 533
534# Remove flags from LDFLAGS - it's up to the ebuild to filter
535# CFLAGS and CXXFLAGS via filter-flags if they need to.
409filter-ldflags() { 536filter-ldflags() {
410 local x 537 _filter-var LDFLAGS "$@"
538 return 0
539}
411 540
412 # we do this fancy spacing stuff so as to not filter 541# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
413 # out part of a flag ... we want flag atoms ! :D 542# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
414 LDFLAGS=" ${LDFLAGS} " 543# to gcc where it needs the '-Wl,'.
544raw-ldflags() {
545 local x input="$@"
546 [[ -z ${input} ]] && input=${LDFLAGS}
547 set --
415 for x in "$@" ; do 548 for x in ${input} ; do
416 LDFLAGS="${LDFLAGS// ${x} / }" 549 x=${x#-Wl,}
550 set -- "$@" ${x//,/ }
417 done 551 done
418 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" 552 echo "$@"
419 export LDFLAGS
420 return 0
421} 553}
422 554
423etexec-flags() { 555# Gets the flags needed for "NOW" binding
424 # if you're not using a hardened compiler you wont need this 556bindnow-flags() {
425 # PIC/no-pic kludge in the first place. 557 case $($(tc-getLD) -v 2>&1 </dev/null) in
426 has_hardened || return 0 558 *GNU* | *'with BFD'*) # GNU ld
427 use amd64 && return 0 559 echo "-Wl,-z,now" ;;
428 use mips && return 0 560 *Apple*) # Darwin ld
429 561 echo "-bind_at_load" ;;
430 if has_pie || has_pic; then 562 *)
431 [ -z "`is-flag -fno-pic`" ] && 563 # Some linkers just recognize -V instead of -v
432 export CFLAGS="${CFLAGS} `test_flag -fno-pic`" 564 case $($(tc-getLD) -V 2>&1 </dev/null) in
433 [ -z "`is-flag -nopie`" ] && 565 *Solaris*) # Solaris accept almost the same GNU options
434 export CFLAGS="${CFLAGS} `test_flag -nopie`" 566 echo "-Wl,-z,now" ;;
435 fi 567 esac
436 return 0 568 ;;
569 esac
437} 570}
438 571
439fstack-flags() {
440 if has_ssp; then
441 [ -z "`is-flag -fno-stack-protector`" ] &&
442 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
443 fi
444 return 0
445}
446 572
447# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>, 573# Some tests for when we screw with things and want to make
448# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more 574# sure we didn't break anything
449# fixes. 575#TESTS() {
576# CFLAGS="-a -b -c=1"
577# CXXFLAGS="-x -y -z=2"
578# LDFLAGS="-l -m -n=3"
450# 579#
451# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3 580# die() { exit 1; }
452gcc2-flags() { 581# (is-flag 1 2 3) && die
453 CFLAGS=${CFLAGS//pentium-mmx/i586} 582# (is-ldflag 1 2 3) && die
454 CFLAGS=${CFLAGS//pentium[234]/i686} 583#
455 CFLAGS=${CFLAGS//k6-[23]/k6} 584# is-flagq -l && die
456 CFLAGS=${CFLAGS//athlon-tbird/i686} 585# is-ldflagq -a && die
457 CFLAGS=${CFLAGS//athlon-4/i686} 586# is-flagq -a || die
458 CFLAGS=${CFLAGS//athlon-[xm]p/i686} 587# is-flagq -x || die
459 CFLAGS=${CFLAGS//athlon/i686} 588# is-ldflagq -n=* || die
460 589# is-ldflagq -n && die
461 CXXFLAGS=${CXXFLAGS//pentium-mmx/i586} 590#
462 CXXFLAGS=${CXXFLAGS//pentium[234]/i686} 591# strip-unsupported-flags
463 CXXFLAGS=${CXXFLAGS//k6-[23]/k6} 592# [[ ${CFLAGS} == "-c=1" ]] || die
464 CXXFLAGS=${CXXFLAGS//athlon-tbird/i686} 593# [[ ${CXXFLAGS} == "-y -z=2" ]] || die
465 CXXFLAGS=${CXXFLAGS//athlon-4/i686} 594#
466 CXXFLAGS=${CXXFLAGS//athlon-[xm]p/i686} 595# echo "All tests pass"
467 CXXFLAGS=${CXXFLAGS//athlon/i686} 596#}
468 597#TESTS
469 if [ "$ARCH" = alpha ]; then
470 CHOST=${CHOST/#alphaev6[78]/alphaev6}
471 CFLAGS=${CFLAGS//ev6[78]/ev6}
472 CXXFLAGS=${CXXFLAGS//ev6[78]/ev6}
473 fi
474
475 export CFLAGS CXXFLAGS
476}

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