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1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2004 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 1.72 2004/10/09 18:28:46 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.83 2005/02/19 07:11:31 mr_bones_ Exp $
4# 4#
5# Author Bart Verwilst <verwilst@gentoo.org> 5# Author Bart Verwilst <verwilst@gentoo.org>
6 6
7ECLASS=flag-o-matic 7ECLASS=flag-o-matic
8INHERITED="$INHERITED $ECLASS" 8INHERITED="$INHERITED $ECLASS"
9 9
10# Please leave ${IUSE} in this until portage .51 is stable, otherwise
11# IUSE gets clobbered.
12IUSE="${IUSE} debug" 10IUSE="debug"
13 11
14# need access to emktemp() 12# need access to emktemp()
15inherit eutils 13inherit eutils toolchain-funcs multilib
16 14
17# 15#
18#### filter-flags <flags> #### 16#### filter-flags <flags> ####
19# Remove particular flags from C[XX]FLAGS 17# Remove particular flags from C[XX]FLAGS
20# Matches only complete flags 18# Matches only complete flags
57# Add extra flags to your current LDFLAGS 55# Add extra flags to your current LDFLAGS
58# 56#
59#### filter-ldflags <flags> #### 57#### filter-ldflags <flags> ####
60# Remove particular flags from LDFLAGS 58# Remove particular flags from LDFLAGS
61# Matches only complete flags 59# Matches only complete flags
62#
63#### etexec-flags ####
64# hooked function for hardened gcc that appends
65# -fno-pic to {C,CXX,LD}FLAGS
66# when a package is filtering -fpic, -fPIC, -fpie, -fPIE
67# 60#
68#### fstack-flags #### 61#### fstack-flags ####
69# hooked function for hardened gcc that appends 62# hooked function for hardened gcc that appends
70# -fno-stack-protector to {C,CXX,LD}FLAGS 63# -fno-stack-protector to {C,CXX,LD}FLAGS
71# when a package is filtering -fstack-protector, -fstack-protector-all 64# when a package is filtering -fstack-protector, -fstack-protector-all
74# 67#
75 68
76# C[XX]FLAGS that we allow in strip-flags 69# C[XX]FLAGS that we allow in strip-flags
77setup-allowed-flags() { 70setup-allowed-flags() {
78 if [ -z "${ALLOWED_FLAGS}" ] ; then 71 if [ -z "${ALLOWED_FLAGS}" ] ; then
79 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -fno-stack-protector -fno-pie -fno-unit-at-a-time -pipe -g" 72 export ALLOWED_FLAGS="-pipe"
73 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
74 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fno-stack-protector"
75 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
76 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
80 case "${ARCH}" in 77 case "${ARCH}" in
81 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;; 78 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;;
82 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;; 79 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;;
83 x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;; 80 x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;;
84 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 81 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
85 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 82 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
83 sparc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32 -m64" ;;
84 ppc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mabi" ;;
86 esac 85 esac
87 fi 86 fi
88 # allow a bunch of flags that negate features / control ABI 87 # allow a bunch of flags that negate features / control ABI
89 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" 88 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
90 case "${ARCH}" in 89 case "${ARCH}" in
97 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 96 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
98 return 0 97 return 0
99} 98}
100 99
101filter-flags() { 100filter-flags() {
102 local x f fset 101 local x f fset
103 declare -a new_CFLAGS new_CXXFLAGS 102 declare -a new_CFLAGS new_CXXFLAGS
104 103
105 for x in "$@" ; do 104 for x in "$@" ; do
106 case "${x}" in 105 case "${x}" in
107 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; 106 -fPIC|-fpic|-fPIE|-fpie|-pie)
107 append-flags `test_flag -fno-pie`;;
108 -fstack-protector|-fstack-protector-all) fstack-flags;; 108 -fstack-protector|-fstack-protector-all)
109 fstack-flags;;
109 esac 110 esac
110 done 111 done
111 112
112 for fset in CFLAGS CXXFLAGS; do 113 for fset in CFLAGS CXXFLAGS; do
113 # Looping over the flags instead of using a global 114 # Looping over the flags instead of using a global
134append-lfs-flags() { 135append-lfs-flags() {
135 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 136 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
136} 137}
137 138
138append-flags() { 139append-flags() {
140 [[ -z $* ]] && return 0
139 export CFLAGS="${CFLAGS} $*" 141 export CFLAGS="${CFLAGS} $*"
140 export CXXFLAGS="${CXXFLAGS} $*" 142 export CXXFLAGS="${CXXFLAGS} $*"
141 [ -n "`is-flag -fno-stack-protector`" -o \ 143 [ -n "`is-flag -fno-stack-protector`" -o \
142 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags 144 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
143 return 0 145 return 0
144} 146}
145 147
146replace-flags() { 148replace-flags() {
147 local f fset 149 local f fset
148 declare -a new_CFLAGS new_CXXFLAGS 150 declare -a new_CFLAGS new_CXXFLAGS
149 151
150 for fset in CFLAGS CXXFLAGS; do 152 for fset in CFLAGS CXXFLAGS; do
151 # Looping over the flags instead of using a global 153 # Looping over the flags instead of using a global
152 # substitution ensures that we're working with flag atoms. 154 # substitution ensures that we're working with flag atoms.
265 export CXXFLAGS="${NEW_CXXFLAGS}" 267 export CXXFLAGS="${NEW_CXXFLAGS}"
266 return 0 268 return 0
267} 269}
268 270
269test_flag() { 271test_flag() {
270 local cc=${CC:-gcc} ; cc=${cc%% *}
271 if ${cc} -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then 272 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then
272 printf "%s\n" "$*" 273 printf "%s\n" "$*"
273 return 0 274 return 0
274 fi 275 fi
275 return 1 276 return 1
276} 277}
277 278
278test_version_info() { 279test_version_info() {
279 local cc=${CC:-gcc} ; cc=${cc%% *}
280 if [[ $(${cc} --version 2>&1) == *$1* ]]; then 280 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
281 return 0 281 return 0
282 else 282 else
283 return 1 283 return 1
284 fi 284 fi
285} 285}
321 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \ 321 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
322 return 0 322 return 0
323 return 1 323 return 1
324} 324}
325 325
326# indicate whether PIC is set
326has_pic() { 327has_pic() {
327 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 328 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
328 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 329 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
330 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
329 test_version_info pie && return 0 331 test_version_info pie && return 0
330 return 1 332 return 1
331} 333}
332 334
335# indicate whether PIE is set
333has_pie() { 336has_pie() {
334 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 337 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
335 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 338 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
336 test_version_info pie && return 0 339 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__)" ] && return 0
340 # test PIC while waiting for specs to be updated to generate __PIE__
341 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
337 return 1 342 return 1
338} 343}
339 344
345# indicate whether code for SSP is being generated
340has_ssp() { 346has_ssp() {
347 # note; this matches both -fstack-protector and -fstack-protector-all
341 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 348 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
342 test_version_info ssp && return 0 349 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0
343 return 1 350 return 1
344} 351}
345 352
346has_m64() { 353has_m64() {
347 # this doesnt test if the flag is accepted, it tests if the flag 354 # this doesnt test if the flag is accepted, it tests if the flag
348 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 355 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
349 # please dont replace this function with test_flag in some future 356 # please dont replace this function with test_flag in some future
350 # clean-up! 357 # clean-up!
351 local temp="$(emktemp)" 358 local temp="$(emktemp)"
352 echo "int main() { return(0); }" > ${temp}.c 359 echo "int main() { return(0); }" > ${temp}.c
360 MY_CC=$(tc-getCC)
353 ${CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 361 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
354 local ret=$? 362 local ret=$?
355 rm -f ${temp}.c 363 rm -f ${temp}.c
356 [ "$ret" != "1" ] && return 0 364 [ "$ret" != "1" ] && return 0
357 return 1 365 return 1
358} 366}
360has_m32() { 368has_m32() {
361 # this doesnt test if the flag is accepted, it tests if the flag 369 # this doesnt test if the flag is accepted, it tests if the flag
362 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 370 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
363 # please dont replace this function with test_flag in some future 371 # please dont replace this function with test_flag in some future
364 # clean-up! 372 # clean-up!
373
374 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
375
365 local temp="$(emktemp)" 376 local temp="$(emktemp)"
366 echo "int main() { return(0); }" > ${temp}.c 377 echo "int main() { return(0); }" > ${temp}.c
378 MY_CC=$(tc-getCC)
367 ${CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 379 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
368 local ret=$? 380 local ret=$?
369 rm -f ${temp}.c 381 rm -f ${temp}.c
370 [ "$ret" != "1" ] && return 0 382 [ "$ret" != "1" ] && return 0
371 return 1 383 return 1
372} 384}
373 385
374replace-sparc64-flags() { 386replace-sparc64-flags() {
375 local SPARC64_CPUS="ultrasparc v9" 387 local SPARC64_CPUS="ultrasparc v9"
376 388
377 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then 389 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
378 for x in ${SPARC64_CPUS}; do 390 for x in ${SPARC64_CPUS}; do
379 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 391 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
380 done 392 done
381 else 393 else
382 for x in ${SPARC64_CPUS}; do 394 for x in ${SPARC64_CPUS}; do
383 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 395 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
384 done 396 done
385 fi 397 fi
386 398
387 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then 399 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
388 for x in ${SPARC64_CPUS}; do 400 for x in ${SPARC64_CPUS}; do
389 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 401 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
390 done 402 done
391 else 403 else
392 for x in ${SPARC64_CPUS}; do 404 for x in ${SPARC64_CPUS}; do
414 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" 426 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}"
415 export LDFLAGS 427 export LDFLAGS
416 return 0 428 return 0
417} 429}
418 430
419etexec-flags() {
420 # if you're not using a hardened compiler you wont need this
421 # PIC/no-pic kludge in the first place.
422 has_hardened || return 0
423 # this kludge breaks on amd64, and probably other -fPIC dependant
424 # archs.
425 use amd64 && return 0
426
427 if has_pie || has_pic; then
428 [ -z "`is-flag -fno-pic`" ] &&
429 export CFLAGS="${CFLAGS} `test_flag -fno-pic`"
430 [ -z "`is-flag -nopie`" ] &&
431 export CFLAGS="${CFLAGS} `test_flag -nopie`"
432 fi
433 return 0
434}
435
436fstack-flags() { 431fstack-flags() {
437 if has_ssp; then 432 if has_ssp; then
438 [ -z "`is-flag -fno-stack-protector`" ] && 433 [ -z "`is-flag -fno-stack-protector`" ] &&
439 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" 434 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
440 fi 435 fi
441 return 0 436 return 0
442} 437}
438
439# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
440# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
441# fixes.
442#
443# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
444gcc2-flags() {
445 CFLAGS=${CFLAGS//pentium-mmx/i586}
446 CFLAGS=${CFLAGS//pentium[234]/i686}
447 CFLAGS=${CFLAGS//k6-[23]/k6}
448 CFLAGS=${CFLAGS//athlon-tbird/i686}
449 CFLAGS=${CFLAGS//athlon-4/i686}
450 CFLAGS=${CFLAGS//athlon-[xm]p/i686}
451 CFLAGS=${CFLAGS//athlon/i686}
452
453 CXXFLAGS=${CXXFLAGS//pentium-mmx/i586}
454 CXXFLAGS=${CXXFLAGS//pentium[234]/i686}
455 CXXFLAGS=${CXXFLAGS//k6-[23]/k6}
456 CXXFLAGS=${CXXFLAGS//athlon-tbird/i686}
457 CXXFLAGS=${CXXFLAGS//athlon-4/i686}
458 CXXFLAGS=${CXXFLAGS//athlon-[xm]p/i686}
459 CXXFLAGS=${CXXFLAGS//athlon/i686}
460
461 if [ "$ARCH" = alpha ]; then
462 CHOST=${CHOST/#alphaev6[78]/alphaev6}
463 CFLAGS=${CFLAGS//ev6[78]/ev6}
464 CXXFLAGS=${CXXFLAGS//ev6[78]/ev6}
465 fi
466
467 export CFLAGS CXXFLAGS
468}

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