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1# Copyright 1999-2004 Gentoo Foundation 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 1.65 2004/07/27 19:25:49 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.85 2005/04/06 23:29:23 vapier Exp $
4#
5# Author Bart Verwilst <verwilst@gentoo.org>
6 4
7ECLASS=flag-o-matic 5ECLASS=flag-o-matic
8INHERITED="$INHERITED $ECLASS" 6INHERITED="$INHERITED $ECLASS"
9 7
10# Please leave ${IUSE} in this until portage .51 is stable, otherwise
11# IUSE gets clobbered.
12IUSE="${IUSE} debug" 8IUSE="debug"
9
10# need access to emktemp()
11inherit eutils toolchain-funcs multilib
13 12
14# 13#
15#### filter-flags <flags> #### 14#### filter-flags <flags> ####
16# Remove particular flags from C[XX]FLAGS 15# Remove particular flags from C[XX]FLAGS
17# Matches only complete flags 16# Matches only complete flags
20# Add extra flags to your current C[XX]FLAGS 19# Add extra flags to your current C[XX]FLAGS
21# 20#
22#### replace-flags <orig.flag> <new.flag> ### 21#### replace-flags <orig.flag> <new.flag> ###
23# Replace a flag by another one 22# Replace a flag by another one
24# 23#
25#### replace-cpu-flags <new.cpu> <old.cpus> ### 24#### replace-cpu-flags <old.cpus> <new.cpu> ###
26# Replace march/mcpu flags that specify <old.cpus> 25# Replace march/mcpu flags that specify <old.cpus>
27# with flags that specify <new.cpu> 26# with flags that specify <new.cpu>
28# 27#
29#### is-flag <flag> #### 28#### is-flag <flag> ####
30# Returns "true" if flag is set in C[XX]FLAGS 29# Returns "true" if flag is set in C[XX]FLAGS
54# Add extra flags to your current LDFLAGS 53# Add extra flags to your current LDFLAGS
55# 54#
56#### filter-ldflags <flags> #### 55#### filter-ldflags <flags> ####
57# Remove particular flags from LDFLAGS 56# Remove particular flags from LDFLAGS
58# Matches only complete flags 57# Matches only complete flags
59#
60#### etexec-flags ####
61# hooked function for hardened gcc that appends
62# -fno-pic to {C,CXX,LD}FLAGS
63# when a package is filtering -fpic, -fPIC, -fpie, -fPIE
64# 58#
65#### fstack-flags #### 59#### fstack-flags ####
66# hooked function for hardened gcc that appends 60# hooked function for hardened gcc that appends
67# -fno-stack-protector to {C,CXX,LD}FLAGS 61# -fno-stack-protector to {C,CXX,LD}FLAGS
68# when a package is filtering -fstack-protector, -fstack-protector-all 62# when a package is filtering -fstack-protector, -fstack-protector-all
70# when only -fno-stack-protector is given 64# when only -fno-stack-protector is given
71# 65#
72 66
73# C[XX]FLAGS that we allow in strip-flags 67# C[XX]FLAGS that we allow in strip-flags
74setup-allowed-flags() { 68setup-allowed-flags() {
75 if [ -z "${ALLOWED_FLAGS}" ] ; then 69 if [[ -z ${ALLOWED_FLAGS} ]] ; then
76 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -fno-unit-at-a-time -pipe -g" 70 export ALLOWED_FLAGS="-pipe"
77 case "${ARCH}" in 71 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
72 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fno-stack-protector"
73 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
74 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
75 case $(tc-arch) in
78 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 76 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;;
79 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;; 77 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;;
80 x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;; 78 x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;;
81 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 79 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
82 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 80 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
81 sparc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32 -m64" ;;
82 ppc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mabi" ;;
83 esac 83 esac
84 fi 84 fi
85 # allow a bunch of flags that negate features / control ABI 85 # allow a bunch of flags that negate features / control ABI
86 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" 86 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
87 case "${ARCH}" in 87 case $(tc-arch) in
88 x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;; 88 x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;;
89 esac 89 esac
90 ALLOWED_FLAGS="${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" 90 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs -msoft-float -mflat -mno-faster-structs -mfaster-structs -mlittle-endian -mbig-endian -mlive-g0 -mcmodel -mno-stack-bias -mstack-bias"
91 91
92 # C[XX]FLAGS that we are think is ok, but needs testing 92 # C[XX]FLAGS that we are think is ok, but needs testing
94 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 94 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
95 return 0 95 return 0
96} 96}
97 97
98filter-flags() { 98filter-flags() {
99 local x f fset 99 local x f fset
100 declare -a new_CFLAGS new_CXXFLAGS 100 declare -a new_CFLAGS new_CXXFLAGS
101 101
102 for x in "$@" ; do 102 for x in "$@" ; do
103 case "${x}" in 103 case "${x}" in
104 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; 104 -fPIC|-fpic|-fPIE|-fpie|-pie)
105 append-flags `test_flag -fno-pie`;;
105 -fstack-protector|-fstack-protector-all) fstack-flags;; 106 -fstack-protector|-fstack-protector-all)
107 fstack-flags;;
106 esac 108 esac
107 done 109 done
108 110
109 for fset in CFLAGS CXXFLAGS; do 111 for fset in CFLAGS CXXFLAGS; do
110 # Looping over the flags instead of using a global 112 # Looping over the flags instead of using a global
131append-lfs-flags() { 133append-lfs-flags() {
132 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 134 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
133} 135}
134 136
135append-flags() { 137append-flags() {
138 [[ -z $* ]] && return 0
136 export CFLAGS="${CFLAGS} $*" 139 export CFLAGS="${CFLAGS} $*"
137 export CXXFLAGS="${CXXFLAGS} $*" 140 export CXXFLAGS="${CXXFLAGS} $*"
138 [ -n "`is-flag -fno-stack-protector`" -o \ 141 [ -n "`is-flag -fno-stack-protector`" -o \
139 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags 142 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
140 return 0 143 return 0
141} 144}
142 145
143replace-flags() { 146replace-flags() {
144 local f fset 147 local f fset
145 declare -a new_CFLAGS new_CXXFLAGS 148 declare -a new_CFLAGS new_CXXFLAGS
146 149
147 for fset in CFLAGS CXXFLAGS; do 150 for fset in CFLAGS CXXFLAGS; do
148 # Looping over the flags instead of using a global 151 # Looping over the flags instead of using a global
149 # substitution ensures that we're working with flag atoms. 152 # substitution ensures that we're working with flag atoms.
159 162
160 return 0 163 return 0
161} 164}
162 165
163replace-cpu-flags() { 166replace-cpu-flags() {
164 local oldcpu newcpu="$1" ; shift 167 local newcpu="$#" ; newcpu="${!newcpu}"
165 for oldcpu in "$@" ; do 168 while [ $# -gt 1 ] ; do
166 # quote to make sure that no globbing is done (particularly on 169 # quote to make sure that no globbing is done (particularly on
167 # ${oldcpu} prior to calling replace-flags 170 # ${oldcpu} prior to calling replace-flags
168 replace-flags "-march=${oldcpu}" "-march=${newcpu}" 171 replace-flags "-march=${1}" "-march=${newcpu}"
169 replace-flags "-mcpu=${oldcpu}" "-mcpu=${newcpu}" 172 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
170 replace-flags "-mtune=${oldcpu}" "-mtune=${newcpu}" 173 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
174 shift
171 done 175 done
172 return 0 176 return 0
173} 177}
174 178
175is-flag() { 179is-flag() {
176 local x 180 local x
177 181
178 for x in ${CFLAGS} ${CXXFLAGS} ; do 182 for x in ${CFLAGS} ${CXXFLAGS} ; do
183 # Note this should work with globs like -mcpu=ultrasparc*
179 if [ "${x}" == "$1" ] ; then 184 if [[ ${x} == ${1} ]]; then
180 echo true 185 echo true
181 return 0 186 return 0
182 fi 187 fi
183 done 188 done
184 return 1 189 return 1
217 222
218 local NEW_CFLAGS="" 223 local NEW_CFLAGS=""
219 local NEW_CXXFLAGS="" 224 local NEW_CXXFLAGS=""
220 225
221 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 226 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
222 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then 227 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
223 use debug && einfo "Enabling the use of some unstable flags" 228 use debug && einfo "Enabling the use of some unstable flags"
224 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 229 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
225 fi 230 fi
226 231
227 set -f # disable pathname expansion 232 set -f # disable pathname expansion
260 export CXXFLAGS="${NEW_CXXFLAGS}" 265 export CXXFLAGS="${NEW_CXXFLAGS}"
261 return 0 266 return 0
262} 267}
263 268
264test_flag() { 269test_flag() {
265 local cc=${CC:-gcc} ; cc=${cc%% *} 270 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then
266 if ${cc} -S -xc "$@" -o /dev/null /dev/null &>/dev/null; then
267 printf "%s\n" "$*" 271 printf "%s\n" "$*"
268 return 0 272 return 0
269 fi 273 fi
270 return 1 274 return 1
271} 275}
272 276
273test_version_info() { 277test_version_info() {
274 local cc=${CC:-gcc} ; cc=${cc%% *}
275 if [[ $(${cc} --version 2>&1) == *$1* ]]; then 278 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
276 return 0 279 return 0
277 else 280 else
278 return 1 281 return 1
279 fi 282 fi
280} 283}
309 done 312 done
310 return 1 313 return 1
311} 314}
312 315
313has_hardened() { 316has_hardened() {
314 test_version_info Hardened 317 test_version_info Hardened && return 0
318 # the specs file wont exist unless gcc has GCC_SPECS support
319 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
320 return 0
315 return $? 321 return 1
316} 322}
317 323
324# indicate whether PIC is set
318has_pic() { 325has_pic() {
319 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 326 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
320 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 327 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
328 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
321 test_version_info pie && return 0 329 test_version_info pie && return 0
322 return 1 330 return 1
323} 331}
324 332
333# indicate whether PIE is set
325has_pie() { 334has_pie() {
326 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 335 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
327 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 336 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
328 test_version_info pie && return 0 337 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__)" ] && return 0
338 # test PIC while waiting for specs to be updated to generate __PIE__
339 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
329 return 1 340 return 1
330} 341}
331 342
343# indicate whether code for SSP is being generated
332has_ssp() { 344has_ssp() {
345 # note; this matches both -fstack-protector and -fstack-protector-all
333 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 346 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
334 test_version_info ssp && return 0 347 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0
335 return 1 348 return 1
336} 349}
337 350
338has_m64() { 351has_m64() {
339 # this doesnt test if the flag is accepted, it tests if the flag 352 # this doesnt test if the flag is accepted, it tests if the flag
340 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 353 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
341 # please dont replace this function with test_flag in some future 354 # please dont replace this function with test_flag in some future
342 # clean-up! 355 # clean-up!
343 temp=`mktemp` 356 local temp="$(emktemp)"
344 echo "int main() { return(0); }" > ${temp}.c 357 echo "int main() { return(0); }" > ${temp}.c
345 ${CC/ .*/} -m64 -o /dev/null ${temp}.c > /dev/null 2>&1 358 MY_CC=$(tc-getCC)
346 ret=$? 359 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
360 local ret=$?
347 rm -f ${temp}.c 361 rm -f ${temp}.c
348 [ "$ret" != "1" ] && return 0 362 [ "$ret" != "1" ] && return 0
349 return 1 363 return 1
350} 364}
351 365
352has_m32() { 366has_m32() {
353 # this doesnt test if the flag is accepted, it tests if the flag 367 # this doesnt test if the flag is accepted, it tests if the flag
354 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 368 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
355 # please dont replace this function with test_flag in some future 369 # please dont replace this function with test_flag in some future
356 # clean-up! 370 # clean-up!
357 temp=`mktemp` 371
372 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
373
374 local temp="$(emktemp)"
358 echo "int main() { return(0); }" > ${temp}.c 375 echo "int main() { return(0); }" > ${temp}.c
359 ${CC/ .*/} -m32 -o /dev/null ${temp}.c > /dev/null 2>&1 376 MY_CC=$(tc-getCC)
360 ret=$? 377 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
378 local ret=$?
361 rm -f ${temp}.c 379 rm -f ${temp}.c
362 [ "$ret" != "1" ] && return 0 380 [ "$ret" != "1" ] && return 0
363 return 1 381 return 1
364} 382}
365 383
366replace-sparc64-flags() { 384replace-sparc64-flags() {
367 local SPARC64_CPUS="ultrasparc v9" 385 local SPARC64_CPUS="ultrasparc v9"
368 386
369 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then 387 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
370 for x in ${SPARC64_CPUS}; do 388 for x in ${SPARC64_CPUS}; do
371 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 389 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
372 done 390 done
373 else 391 else
374 for x in ${SPARC64_CPUS}; do 392 for x in ${SPARC64_CPUS}; do
375 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 393 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
376 done 394 done
377 fi 395 fi
378 396
379 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then 397 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
380 for x in ${SPARC64_CPUS}; do 398 for x in ${SPARC64_CPUS}; do
381 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 399 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
382 done 400 done
383 else 401 else
384 for x in ${SPARC64_CPUS}; do 402 for x in ${SPARC64_CPUS}; do
399 417
400 # we do this fancy spacing stuff so as to not filter 418 # we do this fancy spacing stuff so as to not filter
401 # out part of a flag ... we want flag atoms ! :D 419 # out part of a flag ... we want flag atoms ! :D
402 LDFLAGS=" ${LDFLAGS} " 420 LDFLAGS=" ${LDFLAGS} "
403 for x in "$@" ; do 421 for x in "$@" ; do
404 LDFLAGS="${LDFLAGS// ${x} / }" 422 LDFLAGS=${LDFLAGS// ${x} / }
405 done 423 done
424 [[ -z ${LDFLAGS// } ]] \
425 && LDFLAGS="" \
406 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" 426 || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
407 export LDFLAGS 427 export LDFLAGS
408 return 0
409}
410
411etexec-flags() {
412 # if you're not using a hardened compiler you wont need this
413 # PIC/no-pic kludge in the first place.
414 has_hardened || return 0
415
416 if has_pie || has_pic; then
417 [ -z "`is-flag -fno-pic`" ] &&
418 export CFLAGS="${CFLAGS} `test_flag -fno-pic`"
419 [ -z "`is-flag -nopie`" ] &&
420 export CFLAGS="${CFLAGS} `test_flag -nopie`"
421 fi
422 return 0 428 return 0
423} 429}
424 430
425fstack-flags() { 431fstack-flags() {
426 if has_ssp; then 432 if has_ssp; then
427 [ -z "`is-flag -fno-stack-protector`" ] && 433 [ -z "`is-flag -fno-stack-protector`" ] &&
428 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" 434 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
429 fi 435 fi
430 return 0 436 return 0
431} 437}
438
439# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
440# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
441# fixes.
442#
443# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
444gcc2-flags() {
445 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
446 CFLAGS=${CFLAGS//-mtune=/-mcpu=}
447 CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
448 fi
449
450 replace-cpu-flags k6-{2,3} k6
451 replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
452
453 replace-cpu-flags pentium-mmx i586
454 replace-cpu-flags pentium{2,3,4} i686
455
456 replace-cpu-flags ev6{7,8} ev6
457
458 export CFLAGS CXXFLAGS
459}

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