/[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 1.78 Revision 1.90
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 1.78 2004/12/22 21:18:35 eradicator Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.90 2005/07/11 19:28:20 agriffis Exp $
4#
5# Author Bart Verwilst <verwilst@gentoo.org>
6 4
7ECLASS=flag-o-matic
8INHERITED="$INHERITED $ECLASS"
9
10IUSE="debug"
11 5
12# need access to emktemp() 6# need access to emktemp()
13inherit eutils toolchain-funcs 7inherit eutils toolchain-funcs multilib
14 8
15# 9#
16#### filter-flags <flags> #### 10#### filter-flags <flags> ####
17# Remove particular flags from C[XX]FLAGS 11# Remove particular flags from C[XX]FLAGS
18# Matches only complete flags 12# Matches only complete flags
… …
55# Add extra flags to your current LDFLAGS 49# Add extra flags to your current LDFLAGS
56# 50#
57#### filter-ldflags <flags> #### 51#### filter-ldflags <flags> ####
58# Remove particular flags from LDFLAGS 52# Remove particular flags from LDFLAGS
59# Matches only complete flags 53# Matches only complete flags
60#
61#### etexec-flags ####
62# hooked function for hardened gcc that appends
63# -fno-pic to {C,CXX,LD}FLAGS
64# when a package is filtering -fpic, -fPIC, -fpie, -fPIE
65# 54#
66#### fstack-flags #### 55#### fstack-flags ####
67# hooked function for hardened gcc that appends 56# hooked function for hardened gcc that appends
68# -fno-stack-protector to {C,CXX,LD}FLAGS 57# -fno-stack-protector to {C,CXX,LD}FLAGS
69# when a package is filtering -fstack-protector, -fstack-protector-all 58# when a package is filtering -fstack-protector, -fstack-protector-all
70# notice: modern automatic specs files will also suppress -fstack-protector-all 59# notice: modern automatic specs files will also suppress -fstack-protector-all
71# when only -fno-stack-protector is given 60# when only -fno-stack-protector is given
72# 61#
62#### has_pic ####
63# Returns true if the compiler by default or with current CFLAGS
64# builds position-independent code.
65#
66#### has_ssp_all ####
67# Returns true if the compiler by default or with current CFLAGS
68# generates stack smash protections for all functions
69#
70#### has_ssp ####
71# Returns true if the compiler by default or with current CFLAGS
72# generates stack smash protections for most vulnerable functions
73#
73 74
74# C[XX]FLAGS that we allow in strip-flags 75# C[XX]FLAGS that we allow in strip-flags
75setup-allowed-flags() { 76setup-allowed-flags() {
76 if [ -z "${ALLOWED_FLAGS}" ] ; then 77 if [[ -z ${ALLOWED_FLAGS} ]] ; then
77 export ALLOWED_FLAGS="-pipe" 78 export ALLOWED_FLAGS="-pipe"
78 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" 79 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
79 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fno-stack-protector" 80 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
81 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
80 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time" 82 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
81 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" 83 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
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="${ALLOWED_FLAGS} -m32 -m64" ;;
89 esac
90 fi 84 fi
91 # allow a bunch of flags that negate features / control ABI 85 # allow a bunch of flags that negate features / control ABI
92 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" 86 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
93 case "${ARCH}" in 87 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
94 x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;; 88 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
95 esac 89 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
96 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs -msoft-float -mflat -mno-faster-structs -mfaster-structs -mlittle-endian -mbig-endian -mlive-g0 -mcmodel -mno-stack-bias -mstack-bias" 90 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
91 -mieee -mieee-with-inexact \
92 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
93 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
94 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias"
97 95
98 # C[XX]FLAGS that we are think is ok, but needs testing 96 # C[XX]FLAGS that we are think is ok, but needs testing
99 # NOTE: currently -Os have issues with gcc3 and K6* arch's 97 # NOTE: currently -Os have issues with gcc3 and K6* arch's
100 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 98 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
101 return 0 99 return 0
102} 100}
103 101
104filter-flags() { 102filter-flags() {
105 local x f fset 103 local x f fset
106 declare -a new_CFLAGS new_CXXFLAGS 104 declare -a new_CFLAGS new_CXXFLAGS
107 105
108 for x in "$@" ; do 106 for x in "$@" ; do
109 case "${x}" in 107 case "${x}" in
110 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; 108 -fPIC|-fpic|-fPIE|-fpie|-pie)
109 append-flags `test_flag -fno-pie`;;
111 -fstack-protector|-fstack-protector-all) fstack-flags;; 110 -fstack-protector|-fstack-protector-all)
111 fstack-flags;;
112 esac 112 esac
113 done 113 done
114 114
115 for fset in CFLAGS CXXFLAGS; do 115 for fset in CFLAGS CXXFLAGS; do
116 # Looping over the flags instead of using a global 116 # Looping over the flags instead of using a global
… …
137append-lfs-flags() { 137append-lfs-flags() {
138 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 138 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
139} 139}
140 140
141append-flags() { 141append-flags() {
142 [[ -z $* ]] && return 0
142 export CFLAGS="${CFLAGS} $*" 143 export CFLAGS="${CFLAGS} $*"
143 export CXXFLAGS="${CXXFLAGS} $*" 144 export CXXFLAGS="${CXXFLAGS} $*"
144 [ -n "`is-flag -fno-stack-protector`" -o \ 145 [ -n "`is-flag -fno-stack-protector`" -o \
145 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags 146 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
146 return 0 147 return 0
147} 148}
148 149
149replace-flags() { 150replace-flags() {
150 local f fset 151 local f fset
151 declare -a new_CFLAGS new_CXXFLAGS 152 declare -a new_CFLAGS new_CXXFLAGS
152 153
153 for fset in CFLAGS CXXFLAGS; do 154 for fset in CFLAGS CXXFLAGS; do
154 # Looping over the flags instead of using a global 155 # Looping over the flags instead of using a global
155 # substitution ensures that we're working with flag atoms. 156 # substitution ensures that we're working with flag atoms.
… …
225 226
226 local NEW_CFLAGS="" 227 local NEW_CFLAGS=""
227 local NEW_CXXFLAGS="" 228 local NEW_CXXFLAGS=""
228 229
229 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 230 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
230 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then 231 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
231 use debug && einfo "Enabling the use of some unstable flags"
232 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 232 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
233 fi 233 fi
234 234
235 set -f # disable pathname expansion 235 set -f # disable pathname expansion
236 236
… …
322 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \ 322 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
323 return 0 323 return 0
324 return 1 324 return 1
325} 325}
326 326
327# indicate whether PIC is set
327has_pic() { 328has_pic() {
328 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 329 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
329 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 330 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
330 test_version_info pie && return 0 331 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
331 return 1 332 return 1
332} 333}
333 334
335# indicate whether PIE is set
334has_pie() { 336has_pie() {
335 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 337 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
336 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 338 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
337 test_version_info pie && return 0 339 [ "$(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) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
338 return 1 342 return 1
339} 343}
340 344
345# indicate whether code for SSP is being generated for all functions
346has_ssp_all() {
347 # note; this matches only -fstack-protector-all
348 [ "${CFLAGS/-fstack-protector-all}" != "${CFLAGS}" ] && return 0
349 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__)" ] && return 0
350 return 1
351}
352
353# indicate whether code for SSP is being generated
341has_ssp() { 354has_ssp() {
355 # note; this matches both -fstack-protector and -fstack-protector-all
342 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 356 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
343 test_version_info ssp && return 0 357 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0
344 return 1 358 return 1
345} 359}
346 360
347has_m64() { 361has_m64() {
348 # this doesnt test if the flag is accepted, it tests if the flag 362 # this doesnt test if the flag is accepted, it tests if the flag
… …
362has_m32() { 376has_m32() {
363 # this doesnt test if the flag is accepted, it tests if the flag 377 # this doesnt test if the flag is accepted, it tests if the flag
364 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 378 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
365 # please dont replace this function with test_flag in some future 379 # please dont replace this function with test_flag in some future
366 # clean-up! 380 # clean-up!
381
382 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
383
367 local temp="$(emktemp)" 384 local temp="$(emktemp)"
368 echo "int main() { return(0); }" > ${temp}.c 385 echo "int main() { return(0); }" > ${temp}.c
369 MY_CC=$(tc-getCC) 386 MY_CC=$(tc-getCC)
370 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 387 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
371 local ret=$? 388 local ret=$?
… …
375} 392}
376 393
377replace-sparc64-flags() { 394replace-sparc64-flags() {
378 local SPARC64_CPUS="ultrasparc v9" 395 local SPARC64_CPUS="ultrasparc v9"
379 396
380 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then 397 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
381 for x in ${SPARC64_CPUS}; do 398 for x in ${SPARC64_CPUS}; do
382 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 399 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
383 done 400 done
384 else 401 else
385 for x in ${SPARC64_CPUS}; do 402 for x in ${SPARC64_CPUS}; do
386 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 403 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
387 done 404 done
388 fi 405 fi
389 406
390 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then 407 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
391 for x in ${SPARC64_CPUS}; do 408 for x in ${SPARC64_CPUS}; do
392 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 409 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
393 done 410 done
394 else 411 else
395 for x in ${SPARC64_CPUS}; do 412 for x in ${SPARC64_CPUS}; do
… …
410 427
411 # we do this fancy spacing stuff so as to not filter 428 # we do this fancy spacing stuff so as to not filter
412 # out part of a flag ... we want flag atoms ! :D 429 # out part of a flag ... we want flag atoms ! :D
413 LDFLAGS=" ${LDFLAGS} " 430 LDFLAGS=" ${LDFLAGS} "
414 for x in "$@" ; do 431 for x in "$@" ; do
415 LDFLAGS="${LDFLAGS// ${x} / }" 432 LDFLAGS=${LDFLAGS// ${x} / }
416 done 433 done
434 [[ -z ${LDFLAGS// } ]] \
435 && LDFLAGS="" \
417 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" 436 || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
418 export LDFLAGS 437 export LDFLAGS
419 return 0
420}
421
422etexec-flags() {
423 # if you're not using a hardened compiler you wont need this
424 # PIC/no-pic kludge in the first place.
425 has_hardened || return 0
426 use amd64 && return 0
427 use mips && return 0
428
429 if has_pie || has_pic; then
430 [ -z "`is-flag -fno-pic`" ] &&
431 export CFLAGS="${CFLAGS} `test_flag -fno-pic`"
432 [ -z "`is-flag -nopie`" ] &&
433 export CFLAGS="${CFLAGS} `test_flag -nopie`"
434 fi
435 return 0 438 return 0
436} 439}
437 440
438fstack-flags() { 441fstack-flags() {
439 if has_ssp; then 442 if has_ssp; then
440 [ -z "`is-flag -fno-stack-protector`" ] && 443 [ -z "`is-flag -fno-stack-protector`" ] &&
441 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" 444 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
442 fi 445 fi
443 return 0 446 return 0
444} 447}
445 448
… …
447# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more 450# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
448# fixes. 451# fixes.
449# 452#
450# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3 453# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
451gcc2-flags() { 454gcc2-flags() {
452 CFLAGS=${CFLAGS//pentium-mmx/i586} 455 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
453 CFLAGS=${CFLAGS//pentium[234]/i686} 456 CFLAGS=${CFLAGS//-mtune=/-mcpu=}
454 CFLAGS=${CFLAGS//k6-[23]/k6} 457 CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
455 CFLAGS=${CFLAGS//athlon-tbird/i686}
456 CFLAGS=${CFLAGS//athlon-4/i686}
457 CFLAGS=${CFLAGS//athlon-[xm]p/i686}
458 CFLAGS=${CFLAGS//athlon/i686}
459
460 CXXFLAGS=${CXXFLAGS//pentium-mmx/i586}
461 CXXFLAGS=${CXXFLAGS//pentium[234]/i686}
462 CXXFLAGS=${CXXFLAGS//k6-[23]/k6}
463 CXXFLAGS=${CXXFLAGS//athlon-tbird/i686}
464 CXXFLAGS=${CXXFLAGS//athlon-4/i686}
465 CXXFLAGS=${CXXFLAGS//athlon-[xm]p/i686}
466 CXXFLAGS=${CXXFLAGS//athlon/i686}
467
468 if [ "$ARCH" = alpha ]; then
469 CHOST=${CHOST/#alphaev6[78]/alphaev6}
470 CFLAGS=${CFLAGS//ev6[78]/ev6}
471 CXXFLAGS=${CXXFLAGS//ev6[78]/ev6}
472 fi 458 fi
459
460 replace-cpu-flags k6-{2,3} k6
461 replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
462
463 replace-cpu-flags pentium-mmx i586
464 replace-cpu-flags pentium{2,3,4} i686
465
466 replace-cpu-flags ev6{7,8} ev6
473 467
474 export CFLAGS CXXFLAGS 468 export CFLAGS CXXFLAGS
475} 469}
Legend:
Removed from v.1.78  
changed lines
  Added in v.1.90
  ViewVC Help
Powered by ViewVC 1.1.20