/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.106 Revision 1.121
1# Copyright 1999-2005 Gentoo Foundation 1# Copyright 1999-2008 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 1.106 2006/02/19 23:18:30 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.121 2008/02/16 22:43:04 vapier Exp $
4 4
5# @ECLASS: flag-o-matic.eclass
6# @MAINTAINER:
7# toolchain@gentoo.org
8# @BLURB: common functions to manipulate and query toolchain flags
9# @DESCRIPTION:
10# This eclass contains a suite of functions to help developers sanely
11# and safely manage toolchain flags in their builds.
5 12
6# need access to emktemp()
7inherit eutils toolchain-funcs multilib 13inherit eutils toolchain-funcs multilib
8 14
9#
10#### filter-flags <flags> ####
11# Remove particular flags from C[XX]FLAGS
12# Matches only complete flags
13#
14#### append-flags <flags> ####
15# Add extra flags to your current C[XX]FLAGS
16#
17#### replace-flags <orig.flag> <new.flag> ###
18# Replace a flag by another one
19#
20#### replace-cpu-flags <old.cpus> <new.cpu> ###
21# Replace march/mcpu flags that specify <old.cpus>
22# with flags that specify <new.cpu>
23#
24#### is-flag[q] <flag> ####
25# Returns "true" if flag is set in C[XX]FLAGS
26# Matches only complete a flag
27# q version sets return code but doesn't echo
28#
29#### is-ldflag[q] <flag> ####
30# Returns "true" if flag is set in LDFLAGS
31# Matches only complete a flag
32# q version sets return code but doesn't echo
33#
34#### strip-flags ####
35# Strip C[XX]FLAGS of everything except known
36# good options.
37#
38#### strip-unsupported-flags ####
39# Strip C[XX]FLAGS of any flags not supported by
40# installed version of gcc
41#
42#### get-flag <flag> ####
43# Find and echo the value for a particular flag
44#
45#### replace-sparc64-flags ####
46# Sets mcpu to v8 and uses the original value
47# as mtune if none specified.
48#
49#### filter-mfpmath <math types> ####
50# Remove specified math types from the fpmath specification
51# If the user has -mfpmath=sse,386, running `filter-mfpmath sse`
52# will leave the user with -mfpmath=386
53#
54#### append-ldflags ####
55# Add extra flags to your current LDFLAGS
56#
57#### filter-ldflags <flags> ####
58# Remove particular flags from LDFLAGS
59# Matches only complete flags
60#
61#### bindnow-flags ####
62# Returns the flags to enable "now" binding in the current selected linker.
63#
64################ DEPRECATED functions ################ 15################ DEPRECATED functions ################
65# The following are still present to avoid breaking existing 16# The following are still present to avoid breaking existing
66# code more than necessary; however they are deprecated. Please 17# code more than necessary; however they are deprecated. Please
67# use gcc-specs-* from toolchain-funcs.eclass instead, if you 18# use gcc-specs-* from toolchain-funcs.eclass instead, if you
68# need to know which hardened techs are active in the compiler. 19# need to know which hardened techs are active in the compiler.
69# See bug #100974 20# See bug #100974
70# 21#
71#### has_hardened #### 22# has_hardened
72# Returns true if the compiler has 'Hardened' in its version string, 23# has_pie
73# (note; switched-spec vanilla compilers satisfy this condition) or 24# has_pic
74# the specs file name contains 'hardened'.
75#
76#### has_pie ####
77# Returns true if the compiler by default or with current CFLAGS
78# builds position-independent code.
79#
80#### has_pic ####
81# Returns true if the compiler by default or with current CFLAGS
82# builds position-independent code.
83#
84#### has_ssp_all #### 25# has_ssp_all
85# Returns true if the compiler by default or with current CFLAGS 26# has_ssp
86# generates stack smash protections for all functions 27
87#
88#### has_ssp ####
89# Returns true if the compiler by default or with current CFLAGS
90# generates stack smash protections for most vulnerable functions
91#
92 28
93# C[XX]FLAGS that we allow in strip-flags 29# C[XX]FLAGS that we allow in strip-flags
30# Note: shell globs and character lists are allowed
94setup-allowed-flags() { 31setup-allowed-flags() {
95 if [[ -z ${ALLOWED_FLAGS} ]] ; then 32 if [[ -z ${ALLOWED_FLAGS} ]] ; then
96 export ALLOWED_FLAGS="-pipe" 33 export ALLOWED_FLAGS="-pipe"
97 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" 34 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
98 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" 35 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
99 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking" 36 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking"
100 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" 37 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time"
101 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" 38 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+"
39 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident"
40 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w"
102 fi 41 fi
103 # allow a bunch of flags that negate features / control ABI 42 # allow a bunch of flags that negate features / control ABI
104 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" 43 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \
44 -fno-strict-aliasing -fno-bounds-checking"
105 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ 45 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
106 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ 46 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
107 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ 47 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
108 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ 48 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
109 -mieee -mieee-with-inexact \ 49 -mieee -mieee-with-inexact -mschedule \
110 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ 50 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
111 -mflat -mno-flat -mno-faster-structs -mfaster-structs \ 51 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
112 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ 52 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
113 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias" 53 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \
54 -msecure-plt -D*"
114 55
115 # C[XX]FLAGS that we are think is ok, but needs testing 56 # C[XX]FLAGS that we are think is ok, but needs testing
116 # NOTE: currently -Os have issues with gcc3 and K6* arch's 57 # NOTE: currently -Os have issues with gcc3 and K6* arch's
117 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" 58 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
118 return 0 59 return 0
… …
158 eval new\[\${\#new\[@]}]=\${f} 99 eval new\[\${\#new\[@]}]=\${f}
159 done 100 done
160 eval export ${VAR}=\${new\[*]} 101 eval export ${VAR}=\${new\[*]}
161} 102}
162 103
104# @FUNCTION: filter-flags
105# @USAGE: <flags>
106# @DESCRIPTION:
107# Remove particular <flags> from {C,CPP,CXX}FLAGS. Accepts shell globs.
163filter-flags() { 108filter-flags() {
164 _filter-hardened "$@" 109 _filter-hardened "$@"
165 _filter-var CFLAGS "$@" 110 _filter-var CFLAGS "$@"
111 _filter-var CPPFLAGS "$@"
166 _filter-var CXXFLAGS "$@" 112 _filter-var CXXFLAGS "$@"
167 return 0 113 return 0
168} 114}
169 115
116# @FUNCTION: filter-lfs-flags
117# @DESCRIPTION:
118# Remove flags that enable Large File Support.
170filter-lfs-flags() { 119filter-lfs-flags() {
171 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" 120 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
172 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 121 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
173} 122}
174 123
124# @FUNCTION: append-cppflags
125# @USAGE: <flags>
126# @DESCRIPTION:
127# Add extra <flags> to the current CPPFLAGS.
128append-cppflags() {
129 [[ -z $* ]] && return 0
130 export CPPFLAGS="${CPPFLAGS} $*"
131 return 0
132}
133
134# @FUNCTION: append-lfs-flags
135# @DESCRIPTION:
136# Add flags that enable Large File Support.
175append-lfs-flags() { 137append-lfs-flags() {
176 [[ -n $@ ]] && die "append-lfs-flags takes no arguments" 138 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
177 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 139 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
178} 140}
179 141
142# @FUNCTION: append-flags
143# @USAGE: <flags>
144# @DESCRIPTION:
145# Add extra <flags> to your current C[XX]FLAGS.
180append-flags() { 146append-flags() {
181 [[ -z $* ]] && return 0 147 [[ -z $* ]] && return 0
182 export CFLAGS="${CFLAGS} $*" 148 export CFLAGS="${CFLAGS} $*"
183 export CXXFLAGS="${CXXFLAGS} $*" 149 export CXXFLAGS="${CXXFLAGS} $*"
184 return 0 150 return 0
185} 151}
186 152
153# @FUNCTION: replace-flags
154# @USAGE: <old> <new>
155# @DESCRIPTION:
156# Replace the <old> flag with <new>. Accepts shell globs for <old>.
187replace-flags() { 157replace-flags() {
188 [[ $# != 2 ]] \ 158 [[ $# != 2 ]] \
189 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ 159 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
190 && die "replace-flags takes 2 arguments, not $#" 160 && die "replace-flags takes 2 arguments, not $#"
191 161
… …
206 done 176 done
207 177
208 return 0 178 return 0
209} 179}
210 180
181# @FUNCTION: replace-cpu-flags
182# @USAGE: <old> <new>
183# @DESCRIPTION:
184# Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu
185# with flags that select the <new> cpu. Accepts shell globs for <old>.
211replace-cpu-flags() { 186replace-cpu-flags() {
212 local newcpu="$#" ; newcpu="${!newcpu}" 187 local newcpu="$#" ; newcpu="${!newcpu}"
213 while [ $# -gt 1 ] ; do 188 while [ $# -gt 1 ] ; do
214 # quote to make sure that no globbing is done (particularly on 189 # quote to make sure that no globbing is done (particularly on
215 # ${oldcpu} prior to calling replace-flags 190 # ${oldcpu}) prior to calling replace-flags
216 replace-flags "-march=${1}" "-march=${newcpu}" 191 replace-flags "-march=${1}" "-march=${newcpu}"
217 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" 192 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
218 replace-flags "-mtune=${1}" "-mtune=${newcpu}" 193 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
219 shift 194 shift
220 done 195 done
221 return 0 196 return 0
222} 197}
223 198
199_is_flagq() {
200 local x
201 for x in ${!1} ; do
202 [[ ${x} == $2 ]] && return 0
203 done
204 return 1
205}
206
207# @FUNCTION: is-flagq
208# @USAGE: <flag>
209# @DESCRIPTION:
210# Returns shell true if <flag> is in C[XX]FLAGS, else returns shell false. Accepts shell globs.
224is-flagq() { 211is-flagq() {
225 local x 212 [[ -n $2 ]] && die "Usage: is-flag <flag>"
226 213 _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1
227 for x in ${CFLAGS} ${CXXFLAGS} ; do
228 # Note this should work with globs like -mcpu=ultrasparc*
229 if [[ ${x} == ${1} ]]; then
230 return 0
231 fi
232 done
233 return 1
234} 214}
235 215
216# @FUNCTION: is-flag
217# @USAGE: <flag>
218# @DESCRIPTION:
219# Echo's "true" if flag is set in C[XX]FLAGS. Accepts shell globs.
236is-flag() { 220is-flag() {
237 if is-flagq ${1}; then 221 is-flagq "$@" && echo true
238 echo true
239 return 0
240 fi
241 return 1
242} 222}
243 223
224# @FUNCTION: is-ldflagq
225# @USAGE: <flag>
226# @DESCRIPTION:
227# Returns shell true if <flag> is in LDFLAGS, else returns shell false. Accepts shell globs.
244is-ldflagq() { 228is-ldflagq() {
245 local x 229 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
246 230 _is_flagq LDFLAGS $1
247 for x in ${LDFLAGS} ; do
248 # Note this should work with globs like -mcpu=ultrasparc*
249 if [[ ${x} == ${1} ]]; then
250 return 0
251 fi
252 done
253 return 1
254} 231}
255 232
233# @FUNCTION: is-ldflag
234# @USAGE: <flag>
235# @DESCRIPTION:
236# Echo's "true" if flag is set in LDFLAGS. Accepts shell globs.
256is-ldflag() { 237is-ldflag() {
257 if is-ldflagq ${1}; then 238 is-ldflagq "$@" && echo true
258 echo true
259 return 0
260 fi
261 return 1
262} 239}
263 240
241# @FUNCTION: filter-mfpmath
242# @USAGE: <math types>
243# @DESCRIPTION:
244# Remove specified math types from the fpmath flag. For example, if the user
245# has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with
246# -mfpmath=386.
264filter-mfpmath() { 247filter-mfpmath() {
265 local orig_mfpmath new_math prune_math 248 local orig_mfpmath new_math prune_math
266 249
267 # save the original -mfpmath flag 250 # save the original -mfpmath flag
268 orig_mfpmath="`get-flag -mfpmath`" 251 orig_mfpmath=$(get-flag -mfpmath)
269 # get the value of the current -mfpmath flag 252 # get the value of the current -mfpmath flag
270 new_math=" `get-flag mfpmath | tr , ' '` " 253 new_math=$(get-flag mfpmath)
254 new_math=" ${new_math//,/ } "
271 # figure out which math values are to be removed 255 # figure out which math values are to be removed
272 prune_math="" 256 prune_math=""
273 for prune_math in "$@" ; do 257 for prune_math in "$@" ; do
274 new_math="${new_math/ ${prune_math} / }" 258 new_math=${new_math/ ${prune_math} / }
275 done 259 done
276 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" 260 new_math=$(echo ${new_math})
261 new_math=${new_math// /,}
277 262
278 if [ -z "${new_math}" ] ; then 263 if [[ -z ${new_math} ]] ; then
279 # if we're removing all user specified math values are 264 # if we're removing all user specified math values are
280 # slated for removal, then we just filter the flag 265 # slated for removal, then we just filter the flag
281 filter-flags ${orig_mfpmath} 266 filter-flags ${orig_mfpmath}
282 else 267 else
283 # if we only want to filter some of the user specified 268 # if we only want to filter some of the user specified
… …
285 replace-flags ${orig_mfpmath} -mfpmath=${new_math} 270 replace-flags ${orig_mfpmath} -mfpmath=${new_math}
286 fi 271 fi
287 return 0 272 return 0
288} 273}
289 274
275# @FUNCTION: strip-flags
276# @DESCRIPTION:
277# Strip C[XX]FLAGS of everything except known good/safe flags.
290strip-flags() { 278strip-flags() {
291 local x y flag NEW_CFLAGS NEW_CXXFLAGS 279 local x y flag NEW_CFLAGS NEW_CXXFLAGS
292 280
293 setup-allowed-flags 281 setup-allowed-flags
294 282
… …
347 local PROG=$(tc-get${comp}) 335 local PROG=$(tc-get${comp})
348 ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ 336 ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
349 > /dev/null 2>&1 337 > /dev/null 2>&1
350} 338}
351 339
352# Returns true if C compiler support given flag 340# @FUNCTION: test-flag-CC
341# @USAGE: <flag>
342# @DESCRIPTION:
343# Returns shell true if <flag> is supported by the C compiler, else returns shell false.
353test-flag-CC() { test-flag-PROG "CC" "$1"; } 344test-flag-CC() { test-flag-PROG "CC" "$1"; }
354 345
355# Returns true if C++ compiler support given flag 346# @FUNCTION: test-flag-CXX
347# @USAGE: <flag>
348# @DESCRIPTION:
349# Returns shell true if <flag> is supported by the C++ compiler, else returns shell false.
356test-flag-CXX() { test-flag-PROG "CXX" "$1"; } 350test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
357 351
358test-flags-PROG() { 352test-flags-PROG() {
359 local comp=$1 353 local comp=$1
360 local flags 354 local flags
361 local x 355 local x
362 356
363 shift 357 shift
364 358
365 [[ -z ${comp} ]] && \ 359 [[ -z ${comp} ]] && return 1
366 return 1
367 360
361 x=""
368 for x in "$@" ; do 362 for x in "$@" ; do
369 test-flag-${comp} "${x}" && flags="${flags} ${x}" 363 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
370 done 364 done
371 365
372 echo "${flags}" 366 echo "${flags}"
373 367
374 # Just bail if we dont have any flags 368 # Just bail if we dont have any flags
375 [[ -n ${flags} ]] 369 [[ -n ${flags} ]]
376} 370}
377 371
378# Returns (echo's) the given flags supported by the C compiler 372# @FUNCTION: test-flags-CC
373# @USAGE: <flags>
374# @DESCRIPTION:
375# Returns shell true if <flags> are supported by the C compiler, else returns shell false.
379test-flags-CC() { test-flags-PROG "CC" "$@"; } 376test-flags-CC() { test-flags-PROG "CC" "$@"; }
380 377
381# Returns (echo's) the given flags supported by the C++ compiler 378# @FUNCTION: test-flags-CXX
379# @USAGE: <flags>
380# @DESCRIPTION:
381# Returns shell true if <flags> are supported by the C++ compiler, else returns shell false.
382test-flags-CXX() { test-flags-PROG "CXX" "$@"; } 382test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
383 383
384# @FUNCTION: test-flags
385# @USAGE: <flags>
386# @DESCRIPTION:
384# Short-hand that should hopefully work for both C and C++ compiler, but 387# Short-hand that should hopefully work for both C and C++ compiler, but
385# its really only present due to the append-flags() abomination. 388# its really only present due to the append-flags() abomination.
386test-flags() { test-flags-CC "$@"; } 389test-flags() { test-flags-CC "$@"; }
387 390
388# Depriciated, use test-flags() 391# @FUNCTION: test_flag
392# @DESCRIPTION:
393# DEPRICIATED, use test-flags()
389test_flag() { 394test_flag() {
390 ewarn "test_flag: deprecated, please use test-flags()!" >&2 395 ewarn "test_flag: deprecated, please use test-flags()!" >&2
391 396
392 test-flags-CC "$@" 397 test-flags-CC "$@"
393} 398}
394 399
400# @FUNCTION: test_version_info
401# @USAGE: <version>
402# @DESCRIPTION:
403# Returns shell true if the current C compiler version matches <version>, else returns shell false.
404# Accepts shell globs.
395test_version_info() { 405test_version_info() {
396 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then 406 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
397 return 0 407 return 0
398 else 408 else
399 return 1 409 return 1
400 fi 410 fi
401} 411}
402 412
413# @FUNCTION: strip-unsupported-flags
414# @DESCRIPTION:
415# Strip C[XX]FLAGS of any flags not supported by the active toolchain.
403strip-unsupported-flags() { 416strip-unsupported-flags() {
404 local x NEW_CFLAGS NEW_CXXFLAGS 417 export CFLAGS=$(test-flags-CC ${CFLAGS})
405 418 export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
406 for x in ${CFLAGS} ; do
407 NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})"
408 done
409 for x in ${CXXFLAGS} ; do
410 NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})"
411 done
412
413 export CFLAGS=${NEW_CFLAGS}
414 export CXXFLAGS=${NEW_CXXFLAGS}
415} 419}
416 420
421# @FUNCTION: get-flag
422# @USAGE: <flag>
423# @DESCRIPTION:
424# Find and echo the value for a particular flag. Accepts shell globs.
417get-flag() { 425get-flag() {
418 local f findflag="$1" 426 local f findflag="$1"
419 427
420 # this code looks a little flaky but seems to work for 428 # this code looks a little flaky but seems to work for
421 # everything we want ... 429 # everything we want ...
… …
429 fi 437 fi
430 done 438 done
431 return 1 439 return 1
432} 440}
433 441
442# @FUNCTION: has_hardened
443# @DESCRIPTION:
434# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs 444# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
435has_hardened() { 445has_hardened() {
436 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2 446 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
437 447
438 test_version_info Hardened && return 0 448 test_version_info Hardened && return 0
439 # The specs file wont exist unless gcc has GCC_SPECS support 449 # The specs file wont exist unless gcc has GCC_SPECS support
440 [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]] 450 [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
441} 451}
442 452
453# @FUNCTION: has_pic
454# @DESCRIPTION:
443# DEPRECATED - use gcc-specs-pie from toolchain-funcs 455# DEPRECATED - use gcc-specs-pie from toolchain-funcs
444# indicate whether PIC is set 456# indicate whether PIC is set
445has_pic() { 457has_pic() {
446 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 458 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
447 459
448 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ 460 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
449 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \ 461 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
450 gcc-specs-pie 462 gcc-specs-pie
451} 463}
452 464
465# @FUNCTION: has_pie
466# @DESCRIPTION:
453# DEPRECATED - use gcc-specs-pie from toolchain-funcs 467# DEPRECATED - use gcc-specs-pie from toolchain-funcs
454# indicate whether PIE is set 468# indicate whether PIE is set
455has_pie() { 469has_pie() {
456 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 470 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
457 471
458 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ 472 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
459 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \ 473 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
460 gcc-specs-pie 474 gcc-specs-pie
461} 475}
462 476
477# @FUNCTION: has_ssp_all
478# @DESCRIPTION:
463# DEPRECATED - use gcc-specs-ssp from toolchain-funcs 479# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
464# indicate whether code for SSP is being generated for all functions 480# indicate whether code for SSP is being generated for all functions
465has_ssp_all() { 481has_ssp_all() {
466 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 482 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
467 483
… …
469 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ 485 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
470 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ 486 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
471 gcc-specs-ssp-all 487 gcc-specs-ssp-all
472} 488}
473 489
490# @FUNCTION: has_ssp
491# @DESCRIPTION:
474# DEPRECATED - use gcc-specs-ssp from toolchain-funcs 492# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
475# indicate whether code for SSP is being generated 493# indicate whether code for SSP is being generated
476has_ssp() { 494has_ssp() {
477 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2 495 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
478 496
… …
480 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \ 498 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
481 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ 499 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
482 gcc-specs-ssp 500 gcc-specs-ssp
483} 501}
484 502
503# @FUNCTION: has_m64
504# @DESCRIPTION:
505# This doesn't test if the flag is accepted, it tests if the flag actually
506# WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works
507# return code is 0, else the return code is 1.
485has_m64() { 508has_m64() {
486 # this doesnt test if the flag is accepted, it tests if the flag 509 # this doesnt test if the flag is accepted, it tests if the flag
487 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 510 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
488 # please dont replace this function with test_flag in some future 511 # please dont replace this function with test_flag in some future
489 # clean-up! 512 # clean-up!
… …
496 rm -f "${temp}".c 519 rm -f "${temp}".c
497 [[ ${ret} != 1 ]] && return 0 520 [[ ${ret} != 1 ]] && return 0
498 return 1 521 return 1
499} 522}
500 523
524# @FUNCTION: has_m32
525# @DESCRIPTION:
526# This doesn't test if the flag is accepted, it tests if the flag actually
527# WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return
528# code is 0, else return code is 1.
501has_m32() { 529has_m32() {
502 # this doesnt test if the flag is accepted, it tests if the flag 530 # this doesnt test if the flag is accepted, it tests if the flag
503 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 531 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
504 # please dont replace this function with test_flag in some future 532 # please dont replace this function with test_flag in some future
505 # clean-up! 533 # clean-up!
… …
514 rm -f "${temp}".c 542 rm -f "${temp}".c
515 [[ ${ret} != 1 ]] && return 0 543 [[ ${ret} != 1 ]] && return 0
516 return 1 544 return 1
517} 545}
518 546
547# @FUNCTION: replace-sparc64-flags
548# @DESCRIPTION:
549# Sets mcpu to v8 and uses the original value as mtune if none specified.
519replace-sparc64-flags() { 550replace-sparc64-flags() {
520 local SPARC64_CPUS="ultrasparc3 ultrasparc v9" 551 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
521 552
522 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then 553 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
523 for x in ${SPARC64_CPUS}; do 554 for x in ${SPARC64_CPUS}; do
524 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 555 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
525 done 556 done
526 else 557 else
527 for x in ${SPARC64_CPUS}; do 558 for x in ${SPARC64_CPUS}; do
528 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 559 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
529 done 560 done
530 fi 561 fi
531 562
532 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then 563 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
533 for x in ${SPARC64_CPUS}; do 564 for x in ${SPARC64_CPUS}; do
534 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 565 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
535 done 566 done
536 else 567 else
537 for x in ${SPARC64_CPUS}; do 568 for x in ${SPARC64_CPUS}; do
538 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 569 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
539 done 570 done
540 fi 571 fi
541 572
542 export CFLAGS CXXFLAGS 573 export CFLAGS CXXFLAGS
543} 574}
544 575
576# @FUNCTION: append-ldflags
577# @USAGE: <flags>
578# @DESCRIPTION:
579# Add extra <flags> to the current LDFLAGS.
545append-ldflags() { 580append-ldflags() {
546 [[ -z $* ]] && return 0 581 [[ -z $* ]] && return 0
547 export LDFLAGS="${LDFLAGS} $*" 582 export LDFLAGS="${LDFLAGS} $*"
548 return 0 583 return 0
549} 584}
550 585
551# Remove flags from LDFLAGS - it's up to the ebuild to filter 586# @FUNCTION: filter-ldflags
552# CFLAGS and CXXFLAGS via filter-flags if they need to. 587# @USAGE: <flags>
588# @DESCRIPTION:
589# Remove particular <flags> from LDFLAGS. Accepts shell globs.
553filter-ldflags() { 590filter-ldflags() {
554 _filter-var LDFLAGS "$@" 591 _filter-var LDFLAGS "$@"
555 return 0 592 return 0
556} 593}
557 594
595# @FUNCTION: raw-ldflags
596# @USAGE: <flags>
597# @DESCRIPTION:
558# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results 598# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
559# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed 599# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
560# to gcc where it needs the '-Wl,'. 600# to gcc where it needs the '-Wl,'.
561raw-ldflags() { 601raw-ldflags() {
562 local x input="$@" 602 local x input="$@"
… …
567 set -- "$@" ${x//,/ } 607 set -- "$@" ${x//,/ }
568 done 608 done
569 echo "$@" 609 echo "$@"
570} 610}
571 611
572# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>, 612# @FUNCTION: bindnow-flags
573# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more 613# @RETURN: Returns the flags to enable "now" binding in the current selected linker.
574# fixes. 614# @DESCRIPTION:
575#
576# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
577gcc2-flags() {
578 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
579 CFLAGS=${CFLAGS//-mtune=/-mcpu=}
580 CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
581 fi
582
583 replace-cpu-flags k6-{2,3} k6
584 replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
585
586 replace-cpu-flags pentium-mmx i586
587 replace-cpu-flags pentium{2,3,4} i686
588
589 replace-cpu-flags ev6{7,8} ev6
590
591 export CFLAGS CXXFLAGS
592}
593
594# Gets the flags needed for "NOW" binding 615# DEPRECATED - Gets the flags needed for "NOW" binding
595bindnow-flags() { 616bindnow-flags() {
617 ewarn "QA: stop using the bindnow-flags function ... simply drop it from your ebuild"
618
596 case $($(tc-getLD) -v 2>&1 </dev/null) in 619 case $($(tc-getLD) -v 2>&1 </dev/null) in
597 *GNU* | *'with BFD'*) # GNU ld 620 *GNU* | *'with BFD'*) # GNU ld
598 echo "-Wl,-z,now" ;; 621 echo "-Wl,-z,now" ;;
599 *Apple*) # Darwin ld 622 *Apple*) # Darwin ld
600 echo "-bind_at_load" ;; 623 echo "-bind_at_load" ;;
… …
605 echo "-Wl,-z,now" ;; 628 echo "-Wl,-z,now" ;;
606 esac 629 esac
607 ;; 630 ;;
608 esac 631 esac
609} 632}
633
634
635# Some tests for when we screw with things and want to make
636# sure we didn't break anything
637#TESTS() {
638# CFLAGS="-a -b -c=1"
639# CXXFLAGS="-x -y -z=2"
640# LDFLAGS="-l -m -n=3"
641#
642# die() { exit 1; }
643# (is-flag 1 2 3) && die
644# (is-ldflag 1 2 3) && die
645#
646# is-flagq -l && die
647# is-ldflagq -a && die
648# is-flagq -a || die
649# is-flagq -x || die
650# is-ldflagq -n=* || die
651# is-ldflagq -n && die
652#
653# strip-unsupported-flags
654# [[ ${CFLAGS} == "-c=1" ]] || die
655# [[ ${CXXFLAGS} == "-y -z=2" ]] || die
656#
657# echo "All tests pass"
658#}
659#TESTS
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