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1# Copyright 1999-2008 Gentoo Foundation 1# Copyright 1999-2011 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 1.122 2008/02/18 18:20:47 swegener Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.163 2011/12/28 06:28:55 dirtyepic Exp $
4 4
5# @ECLASS: flag-o-matic.eclass 5# @ECLASS: flag-o-matic.eclass
6# @MAINTAINER: 6# @MAINTAINER:
7# toolchain@gentoo.org 7# toolchain@gentoo.org
8# @BLURB: common functions to manipulate and query toolchain flags 8# @BLURB: common functions to manipulate and query toolchain flags
9# @DESCRIPTION: 9# @DESCRIPTION:
10# This eclass contains a suite of functions to help developers sanely 10# This eclass contains a suite of functions to help developers sanely
11# and safely manage toolchain flags in their builds. 11# and safely manage toolchain flags in their builds.
12
13if [[ ${___ECLASS_ONCE_FLAG_O_MATIC} != "recur -_+^+_- spank" ]] ; then
14___ECLASS_ONCE_FLAG_O_MATIC="recur -_+^+_- spank"
12 15
13inherit eutils toolchain-funcs multilib 16inherit eutils toolchain-funcs multilib
14 17
15################ DEPRECATED functions ################ 18################ DEPRECATED functions ################
16# The following are still present to avoid breaking existing 19# The following are still present to avoid breaking existing
24# has_pic 27# has_pic
25# has_ssp_all 28# has_ssp_all
26# has_ssp 29# has_ssp
27 30
28 31
29# C[XX]FLAGS that we allow in strip-flags 32# {C,CXX,F,FC}FLAGS that we allow in strip-flags
30# Note: shell globs and character lists are allowed 33# Note: shell globs and character lists are allowed
31setup-allowed-flags() { 34setup-allowed-flags() {
32 if [[ -z ${ALLOWED_FLAGS} ]] ; then
33 export ALLOWED_FLAGS="-pipe" 35 ALLOWED_FLAGS="-pipe"
34 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" 36 ALLOWED_FLAGS+=" -O -O1 -O2 -Os -mcpu -march -mtune"
35 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" 37 ALLOWED_FLAGS+=" -fstack-protector -fstack-protector-all"
36 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking" 38 ALLOWED_FLAGS+=" -fbounds-checking -fno-strict-overflow"
37 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" 39 ALLOWED_FLAGS+=" -fno-PIE -fno-pie -fno-unit-at-a-time"
38 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+" 40 ALLOWED_FLAGS+=" -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+"
39 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident" 41 ALLOWED_FLAGS+=" -fno-ident -fpermissive"
40 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w" 42 ALLOWED_FLAGS+=" -W* -w"
41 fi 43
42 # allow a bunch of flags that negate features / control ABI 44 # allow a bunch of flags that negate features / control ABI
43 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \ 45 ALLOWED_FLAGS+=" -fno-stack-protector -fno-stack-protector-all \
44 -fno-strict-aliasing -fno-bounds-checking" 46 -fno-strict-aliasing -fno-bounds-checking -fstrict-overflow \
47 -fno-omit-frame-pointer"
45 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ 48 ALLOWED_FLAGS+=" -mregparm -mno-app-regs -mapp-regs -mno-mmx -mno-sse \
46 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ 49 -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 -mno-sse4.2 \
50 -mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow -mno-popcnt \
47 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ 51 -mno-abm -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -mplt \
48 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ 52 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
49 -mieee -mieee-with-inexact -mschedule \ 53 -mieee -mieee-with-inexact -mschedule -mfloat-gprs -mspe -mno-spe \
50 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ 54 -mtls-direct-seg-refs -mno-tls-direct-seg-refs -mflat -mno-flat \
51 -mflat -mno-flat -mno-faster-structs -mfaster-structs \ 55 -mno-faster-structs -mfaster-structs -m32 -m64 -mx32 -mabi \
52 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ 56 -mlittle-endian -mbig-endian -EL -EB -fPIC -mlive-g0 -mcmodel \
53 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ 57 -mstack-bias -mno-stack-bias -msecure-plt -m*-toc -D* -U*"
54 -msecure-plt -D*"
55 58
56 # C[XX]FLAGS that we are think is ok, but needs testing 59 # 4.5
57 # NOTE: currently -Os have issues with gcc3 and K6* arch's 60 ALLOWED_FLAGS+=" -mno-fma4 -mno-movbe -mno-xop -mno-lwp"
58 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" 61 # 4.6
62 ALLOWED_FLAGS+=" -mno-fsgsbase -mno-rdrnd -mno-f16c -mno-bmi -mno-tbm"
63
64 export ALLOWED_FLAGS
59 return 0 65 return 0
60} 66}
61 67
62# inverted filters for hardened compiler. This is trying to unpick 68# inverted filters for hardened compiler. This is trying to unpick
63# the hardened compiler defaults. 69# the hardened compiler defaults.
71 -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie) 77 -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
72 gcc-specs-pie || continue 78 gcc-specs-pie || continue
73 is-flagq -nopie || append-flags -nopie;; 79 is-flagq -nopie || append-flags -nopie;;
74 -fstack-protector) 80 -fstack-protector)
75 gcc-specs-ssp || continue 81 gcc-specs-ssp || continue
76 is-flagq -fno-stack-protector || append-flags -fno-stack-protector;; 82 is-flagq -fno-stack-protector || append-flags $(test-flags -fno-stack-protector);;
77 -fstack-protector-all) 83 -fstack-protector-all)
78 gcc-specs-ssp-to-all || continue 84 gcc-specs-ssp-to-all || continue
79 is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;; 85 is-flagq -fno-stack-protector-all || append-flags $(test-flags -fno-stack-protector-all);;
86 -fno-strict-overflow)
87 gcc-specs-nostrict || continue
88 is-flagq -fstrict-overflow || append-flags $(test-flags -fstrict-overflow);;
80 esac 89 esac
81 done 90 done
82} 91}
83 92
84# Remove occurrences of strings from variable given in $1 93# Remove occurrences of strings from variable given in $1
102} 111}
103 112
104# @FUNCTION: filter-flags 113# @FUNCTION: filter-flags
105# @USAGE: <flags> 114# @USAGE: <flags>
106# @DESCRIPTION: 115# @DESCRIPTION:
107# Remove particular <flags> from {C,CPP,CXX}FLAGS. Accepts shell globs. 116# Remove particular <flags> from {C,CPP,CXX,F,FC}FLAGS. Accepts shell globs.
108filter-flags() { 117filter-flags() {
109 _filter-hardened "$@" 118 _filter-hardened "$@"
110 _filter-var CFLAGS "$@" 119 _filter-var CFLAGS "$@"
111 _filter-var CPPFLAGS "$@" 120 _filter-var CPPFLAGS "$@"
112 _filter-var CXXFLAGS "$@" 121 _filter-var CXXFLAGS "$@"
122 _filter-var FFLAGS "$@"
123 _filter-var FCFLAGS "$@"
113 return 0 124 return 0
114} 125}
115 126
116# @FUNCTION: filter-lfs-flags 127# @FUNCTION: filter-lfs-flags
117# @DESCRIPTION: 128# @DESCRIPTION:
118# Remove flags that enable Large File Support. 129# Remove flags that enable Large File Support.
119filter-lfs-flags() { 130filter-lfs-flags() {
120 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" 131 [[ $# -ne 0 ]] && die "filter-lfs-flags takes no arguments"
132 # http://www.gnu.org/s/libc/manual/html_node/Feature-Test-Macros.html
133 # _LARGEFILE_SOURCE: enable support for new LFS funcs (ftello/etc...)
134 # _LARGEFILE64_SOURCE: enable support for 64bit variants (off64_t/fseeko64/etc...)
135 # _FILE_OFFSET_BITS: default to 64bit variants (off_t is defined as off64_t)
121 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 136 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
122} 137}
123 138
124# @FUNCTION: append-cppflags 139# @FUNCTION: append-cppflags
125# @USAGE: <flags> 140# @USAGE: <flags>
126# @DESCRIPTION: 141# @DESCRIPTION:
127# Add extra <flags> to the current CPPFLAGS. 142# Add extra <flags> to the current CPPFLAGS.
128append-cppflags() { 143append-cppflags() {
129 [[ -z $* ]] && return 0 144 [[ $# -eq 0 ]] && return 0
130 export CPPFLAGS="${CPPFLAGS} $*" 145 export CPPFLAGS="${CPPFLAGS} $*"
146 return 0
147}
148
149# @FUNCTION: append-cflags
150# @USAGE: <flags>
151# @DESCRIPTION:
152# Add extra <flags> to the current CFLAGS.
153append-cflags() {
154 [[ $# -eq 0 ]] && return 0
155 export CFLAGS=$(test-flags-CC ${CFLAGS} "$@")
156 return 0
157}
158
159# @FUNCTION: append-cxxflags
160# @USAGE: <flags>
161# @DESCRIPTION:
162# Add extra <flags> to the current CXXFLAGS.
163append-cxxflags() {
164 [[ $# -eq 0 ]] && return 0
165 export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS} "$@")
166 return 0
167}
168
169# @FUNCTION: append-fflags
170# @USAGE: <flags>
171# @DESCRIPTION:
172# Add extra <flags> to the current {F,FC}FLAGS.
173append-fflags() {
174 [[ $# -eq 0 ]] && return 0
175 export FFLAGS=$(test-flags-F77 ${FFLAGS} "$@")
176 export FCFLAGS=$(test-flags-FC ${FCFLAGS} "$@")
131 return 0 177 return 0
132} 178}
133 179
134# @FUNCTION: append-lfs-flags 180# @FUNCTION: append-lfs-flags
135# @DESCRIPTION: 181# @DESCRIPTION:
136# Add flags that enable Large File Support. 182# Add flags that enable Large File Support.
137append-lfs-flags() { 183append-lfs-flags() {
138 [[ -n $@ ]] && die "append-lfs-flags takes no arguments" 184 [[ $# -ne 0 ]] && die "append-lfs-flags takes no arguments"
185 # see comments in filter-lfs-flags func for meaning of these
139 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 186 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
140} 187}
141 188
142# @FUNCTION: append-flags 189# @FUNCTION: append-flags
143# @USAGE: <flags> 190# @USAGE: <flags>
144# @DESCRIPTION: 191# @DESCRIPTION:
145# Add extra <flags> to your current C[XX]FLAGS. 192# Add extra <flags> to your current {C,CXX,F,FC}FLAGS.
146append-flags() { 193append-flags() {
147 [[ -z $* ]] && return 0 194 [[ $# -eq 0 ]] && return 0
148 export CFLAGS="${CFLAGS} $*" 195 append-cflags "$@"
149 export CXXFLAGS="${CXXFLAGS} $*" 196 append-cxxflags "$@"
197 append-fflags "$@"
150 return 0 198 return 0
151} 199}
152 200
153# @FUNCTION: replace-flags 201# @FUNCTION: replace-flags
154# @USAGE: <old> <new> 202# @USAGE: <old> <new>
158 [[ $# != 2 ]] \ 206 [[ $# != 2 ]] \
159 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ 207 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
160 && die "replace-flags takes 2 arguments, not $#" 208 && die "replace-flags takes 2 arguments, not $#"
161 209
162 local f fset 210 local f fset
163 declare -a new_CFLAGS new_CXXFLAGS 211 declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS
164 212
165 for fset in CFLAGS CXXFLAGS; do 213 for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do
166 # Looping over the flags instead of using a global 214 # Looping over the flags instead of using a global
167 # substitution ensures that we're working with flag atoms. 215 # substitution ensures that we're working with flag atoms.
168 # Otherwise globs like -O* have the potential to wipe out the 216 # Otherwise globs like -O* have the potential to wipe out the
169 # list of flags. 217 # list of flags.
170 for f in ${!fset}; do 218 for f in ${!fset}; do
205} 253}
206 254
207# @FUNCTION: is-flagq 255# @FUNCTION: is-flagq
208# @USAGE: <flag> 256# @USAGE: <flag>
209# @DESCRIPTION: 257# @DESCRIPTION:
210# Returns shell true if <flag> is in C[XX]FLAGS, else returns shell false. Accepts shell globs. 258# Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs.
211is-flagq() { 259is-flagq() {
212 [[ -n $2 ]] && die "Usage: is-flag <flag>" 260 [[ -n $2 ]] && die "Usage: is-flag <flag>"
213 _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 261 _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1
214} 262}
215 263
216# @FUNCTION: is-flag 264# @FUNCTION: is-flag
217# @USAGE: <flag> 265# @USAGE: <flag>
218# @DESCRIPTION: 266# @DESCRIPTION:
219# Echo's "true" if flag is set in C[XX]FLAGS. Accepts shell globs. 267# Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs.
220is-flag() { 268is-flag() {
221 is-flagq "$@" && echo true 269 is-flagq "$@" && echo true
222} 270}
223 271
224# @FUNCTION: is-ldflagq 272# @FUNCTION: is-ldflagq
274 322
275# @FUNCTION: strip-flags 323# @FUNCTION: strip-flags
276# @DESCRIPTION: 324# @DESCRIPTION:
277# Strip C[XX]FLAGS of everything except known good/safe flags. 325# Strip C[XX]FLAGS of everything except known good/safe flags.
278strip-flags() { 326strip-flags() {
279 local x y flag NEW_CFLAGS NEW_CXXFLAGS 327 local x y flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS
280 328
281 setup-allowed-flags 329 setup-allowed-flags
282 330
283 local NEW_CFLAGS="" 331 local NEW_CFLAGS=""
284 local NEW_CXXFLAGS="" 332 local NEW_CXXFLAGS=""
285 333 local NEW_FFLAGS=""
286 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 334 local NEW_FCFLAGS=""
287 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
288 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
289 fi
290 335
291 set -f # disable pathname expansion 336 set -f # disable pathname expansion
292 337
293 for x in ${CFLAGS}; do 338 for x in ${CFLAGS}; do
294 for y in ${ALLOWED_FLAGS}; do 339 for y in ${ALLOWED_FLAGS}; do
308 break 353 break
309 fi 354 fi
310 done 355 done
311 done 356 done
312 357
358 for x in ${FFLAGS}; do
359 for y in ${ALLOWED_FLAGS}; do
360 flag=${x%%=*}
361 if [ "${flag%%${y}}" = "" ] ; then
362 NEW_FFLAGS="${NEW_FFLAGS} ${x}"
363 break
364 fi
365 done
366 done
367
368 for x in ${FCFLAGS}; do
369 for y in ${ALLOWED_FLAGS}; do
370 flag=${x%%=*}
371 if [ "${flag%%${y}}" = "" ] ; then
372 NEW_FCFLAGS="${NEW_FCFLAGS} ${x}"
373 break
374 fi
375 done
376 done
377
313 # In case we filtered out all optimization flags fallback to -O2 378 # In case we filtered out all optimization flags fallback to -O2
314 if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then 379 if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
315 NEW_CFLAGS="${NEW_CFLAGS} -O2" 380 NEW_CFLAGS="${NEW_CFLAGS} -O2"
316 fi 381 fi
317 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then 382 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
318 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" 383 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
319 fi 384 fi
385 if [ "${FFLAGS/-O}" != "${FFLAGS}" -a "${NEW_FFLAGS/-O}" = "${NEW_FFLAGS}" ]; then
386 NEW_FFLAGS="${NEW_FFLAGS} -O2"
387 fi
388 if [ "${FCFLAGS/-O}" != "${FCFLAGS}" -a "${NEW_FCFLAGS/-O}" = "${NEW_FCFLAGS}" ]; then
389 NEW_FCFLAGS="${NEW_FCFLAGS} -O2"
390 fi
320 391
321 set +f # re-enable pathname expansion 392 set +f # re-enable pathname expansion
322 393
323 export CFLAGS="${NEW_CFLAGS}" 394 export CFLAGS="${NEW_CFLAGS}"
324 export CXXFLAGS="${NEW_CXXFLAGS}" 395 export CXXFLAGS="${NEW_CXXFLAGS}"
396 export FFLAGS="${NEW_FFLAGS}"
397 export FCFLAGS="${NEW_FCFLAGS}"
325 return 0 398 return 0
326} 399}
327 400
328test-flag-PROG() { 401test-flag-PROG() {
329 local comp=$1 402 local comp=$1
330 local flags="$2" 403 local flags="$2"
331 404
332 [[ -z ${comp} || -z ${flags} ]] && \ 405 [[ -z ${comp} || -z ${flags} ]] && return 1
333 return 1
334 406
407 # use -c so we can test the assembler as well
335 local PROG=$(tc-get${comp}) 408 local PROG=$(tc-get${comp})
336 ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ 409 ${PROG} ${flags} -c -o /dev/null -xc /dev/null \
337 > /dev/null 2>&1 410 > /dev/null 2>&1
338} 411}
339 412
340# @FUNCTION: test-flag-CC 413# @FUNCTION: test-flag-CC
341# @USAGE: <flag> 414# @USAGE: <flag>
346# @FUNCTION: test-flag-CXX 419# @FUNCTION: test-flag-CXX
347# @USAGE: <flag> 420# @USAGE: <flag>
348# @DESCRIPTION: 421# @DESCRIPTION:
349# Returns shell true if <flag> is supported by the C++ compiler, else returns shell false. 422# Returns shell true if <flag> is supported by the C++ compiler, else returns shell false.
350test-flag-CXX() { test-flag-PROG "CXX" "$1"; } 423test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
424
425# @FUNCTION: test-flag-F77
426# @USAGE: <flag>
427# @DESCRIPTION:
428# Returns shell true if <flag> is supported by the Fortran 77 compiler, else returns shell false.
429test-flag-F77() { test-flag-PROG "F77" "$1"; }
430
431# @FUNCTION: test-flag-FC
432# @USAGE: <flag>
433# @DESCRIPTION:
434# Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false.
435test-flag-FC() { test-flag-PROG "FC" "$1"; }
351 436
352test-flags-PROG() { 437test-flags-PROG() {
353 local comp=$1 438 local comp=$1
354 local flags 439 local flags
355 local x 440 local x
356 441
357 shift 442 shift
358 443
359 [[ -z ${comp} ]] && return 1 444 [[ -z ${comp} ]] && return 1
360 445
361 x=""
362 for x in "$@" ; do 446 for x in "$@" ; do
363 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}" 447 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
364 done 448 done
365 449
366 echo "${flags}" 450 echo "${flags}"
378# @FUNCTION: test-flags-CXX 462# @FUNCTION: test-flags-CXX
379# @USAGE: <flags> 463# @USAGE: <flags>
380# @DESCRIPTION: 464# @DESCRIPTION:
381# Returns shell true if <flags> are supported by the C++ compiler, else returns shell false. 465# Returns shell true if <flags> are supported by the C++ compiler, else returns shell false.
382test-flags-CXX() { test-flags-PROG "CXX" "$@"; } 466test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
467
468# @FUNCTION: test-flags-F77
469# @USAGE: <flags>
470# @DESCRIPTION:
471# Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false.
472test-flags-F77() { test-flags-PROG "F77" "$@"; }
473
474# @FUNCTION: test-flags-FC
475# @USAGE: <flags>
476# @DESCRIPTION:
477# Returns shell true if <flags> are supported by the Fortran 90 compiler, else returns shell false.
478test-flags-FC() { test-flags-PROG "FC" "$@"; }
383 479
384# @FUNCTION: test-flags 480# @FUNCTION: test-flags
385# @USAGE: <flags> 481# @USAGE: <flags>
386# @DESCRIPTION: 482# @DESCRIPTION:
387# Short-hand that should hopefully work for both C and C++ compiler, but 483# Short-hand that should hopefully work for both C and C++ compiler, but
388# its really only present due to the append-flags() abomination. 484# its really only present due to the append-flags() abomination.
389test-flags() { test-flags-CC "$@"; } 485test-flags() { test-flags-CC "$@"; }
390
391# @FUNCTION: test_flag
392# @DESCRIPTION:
393# DEPRICIATED, use test-flags()
394test_flag() {
395 ewarn "test_flag: deprecated, please use test-flags()!" >&2
396
397 test-flags-CC "$@"
398}
399 486
400# @FUNCTION: test_version_info 487# @FUNCTION: test_version_info
401# @USAGE: <version> 488# @USAGE: <version>
402# @DESCRIPTION: 489# @DESCRIPTION:
403# Returns shell true if the current C compiler version matches <version>, else returns shell false. 490# Returns shell true if the current C compiler version matches <version>, else returns shell false.
410 fi 497 fi
411} 498}
412 499
413# @FUNCTION: strip-unsupported-flags 500# @FUNCTION: strip-unsupported-flags
414# @DESCRIPTION: 501# @DESCRIPTION:
415# Strip C[XX]FLAGS of any flags not supported by the active toolchain. 502# Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain.
416strip-unsupported-flags() { 503strip-unsupported-flags() {
417 export CFLAGS=$(test-flags-CC ${CFLAGS}) 504 export CFLAGS=$(test-flags-CC ${CFLAGS})
418 export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS}) 505 export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
506 export FFLAGS=$(test-flags-F77 ${FFLAGS})
507 export FCFLAGS=$(test-flags-FC ${FCFLAGS})
419} 508}
420 509
421# @FUNCTION: get-flag 510# @FUNCTION: get-flag
422# @USAGE: <flag> 511# @USAGE: <flag>
423# @DESCRIPTION: 512# @DESCRIPTION:
428 # this code looks a little flaky but seems to work for 517 # this code looks a little flaky but seems to work for
429 # everything we want ... 518 # everything we want ...
430 # for example, if CFLAGS="-march=i686": 519 # for example, if CFLAGS="-march=i686":
431 # `get-flag -march` == "-march=i686" 520 # `get-flag -march` == "-march=i686"
432 # `get-flag march` == "i686" 521 # `get-flag march` == "i686"
433 for f in ${CFLAGS} ${CXXFLAGS} ; do 522 for f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do
434 if [ "${f/${findflag}}" != "${f}" ] ; then 523 if [ "${f/${findflag}}" != "${f}" ] ; then
435 printf "%s\n" "${f/-${findflag}=}" 524 printf "%s\n" "${f/-${findflag}=}"
436 return 0 525 return 0
437 fi 526 fi
438 done 527 done
439 return 1 528 return 1
440} 529}
441 530
442# @FUNCTION: has_hardened 531# DEAD FUNCS. Remove by Dec 2011.
443# @DESCRIPTION: 532test_flag() { die "$0: deprecated, please use test-flags()!" ; }
444# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
445has_hardened() {
446 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2 533has_hardened() { die "$0: deprecated, please use gcc-specs-{relro,now}()!" ; }
447
448 test_version_info Hardened && return 0
449 # The specs file wont exist unless gcc has GCC_SPECS support
450 [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
451}
452
453# @FUNCTION: has_pic
454# @DESCRIPTION:
455# DEPRECATED - use gcc-specs-pie from toolchain-funcs
456# indicate whether PIC is set
457has_pic() {
458 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 534has_pic() { die "$0: deprecated, please use gcc-specs-pie()!" ; }
459
460 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
461 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
462 gcc-specs-pie
463}
464
465# @FUNCTION: has_pie
466# @DESCRIPTION:
467# DEPRECATED - use gcc-specs-pie from toolchain-funcs
468# indicate whether PIE is set
469has_pie() {
470 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 535has_pie() { die "$0: deprecated, please use gcc-specs-pie()!" ; }
471
472 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
473 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
474 gcc-specs-pie
475}
476
477# @FUNCTION: has_ssp_all
478# @DESCRIPTION:
479# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
480# indicate whether code for SSP is being generated for all functions
481has_ssp_all() {
482 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 536has_ssp_all() { die "$0: deprecated, please use gcc-specs-ssp()!" ; }
483
484 # note; this matches only -fstack-protector-all
485 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
486 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
487 gcc-specs-ssp-all
488}
489
490# @FUNCTION: has_ssp
491# @DESCRIPTION:
492# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
493# indicate whether code for SSP is being generated
494has_ssp() {
495 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2 537has_ssp() { die "$0: deprecated, please use gcc-specs-ssp()!" ; }
496
497 # note; this matches both -fstack-protector and -fstack-protector-all
498 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
499 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
500 gcc-specs-ssp
501}
502 538
503# @FUNCTION: has_m64 539# @FUNCTION: has_m64
504# @DESCRIPTION: 540# @DESCRIPTION:
505# This doesn't test if the flag is accepted, it tests if the flag actually 541# 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 542# WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works
571 fi 607 fi
572 608
573 export CFLAGS CXXFLAGS 609 export CFLAGS CXXFLAGS
574} 610}
575 611
612# @FUNCTION: append-libs
613# @USAGE: <libs>
614# @DESCRIPTION:
615# Add extra <libs> to the current LIBS.
616append-libs() {
617 [[ $# -eq 0 ]] && return 0
618 local flag
619 for flag in "$@"; do
620 [[ ${flag} == -l* ]] && flag=${flag#-l}
621 export LIBS="${LIBS} -l${flag}"
622 done
623
624 return 0
625}
626
576# @FUNCTION: append-ldflags 627# @FUNCTION: append-ldflags
577# @USAGE: <flags> 628# @USAGE: <flags>
578# @DESCRIPTION: 629# @DESCRIPTION:
579# Add extra <flags> to the current LDFLAGS. 630# Add extra <flags> to the current LDFLAGS.
580append-ldflags() { 631append-ldflags() {
581 [[ -z $* ]] && return 0 632 [[ $# -eq 0 ]] && return 0
633 local flag
634 for flag in "$@"; do
635 [[ ${flag} == -l* ]] && \
636 ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS"
637 done
638
582 export LDFLAGS="${LDFLAGS} $*" 639 export LDFLAGS="${LDFLAGS} $*"
583 return 0 640 return 0
584} 641}
585 642
586# @FUNCTION: filter-ldflags 643# @FUNCTION: filter-ldflags
591 _filter-var LDFLAGS "$@" 648 _filter-var LDFLAGS "$@"
592 return 0 649 return 0
593} 650}
594 651
595# @FUNCTION: raw-ldflags 652# @FUNCTION: raw-ldflags
596# @USAGE: <flags> 653# @USAGE: [flags]
597# @DESCRIPTION: 654# @DESCRIPTION:
598# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results 655# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
599# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed 656# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
600# to gcc where it needs the '-Wl,'. 657# to gcc where it needs the '-Wl,'.
658#
659# If no flags are specified, then default to ${LDFLAGS}.
601raw-ldflags() { 660raw-ldflags() {
602 local x input="$@" 661 local x input="$@"
603 [[ -z ${input} ]] && input=${LDFLAGS} 662 [[ -z ${input} ]] && input=${LDFLAGS}
604 set -- 663 set --
605 for x in ${input} ; do 664 for x in ${input} ; do
607 set -- "$@" ${x//,/ } 666 set -- "$@" ${x//,/ }
608 done 667 done
609 echo "$@" 668 echo "$@"
610} 669}
611 670
612# @FUNCTION: bindnow-flags 671# @FUNCTION: no-as-needed
613# @RETURN: Returns the flags to enable "now" binding in the current selected linker. 672# @RETURN: Flag to disable asneeded behavior for use with append-ldflags.
614# @DESCRIPTION: 673no-as-needed() {
615# DEPRECATED - Gets the flags needed for "NOW" binding
616bindnow-flags() {
617 ewarn "QA: stop using the bindnow-flags function ... simply drop it from your ebuild" >&2
618
619 case $($(tc-getLD) -v 2>&1 </dev/null) in 674 case $($(tc-getLD) -v 2>&1 </dev/null) in
620 *GNU* | *'with BFD'*) # GNU ld 675 *GNU*) # GNU ld
621 echo "-Wl,-z,now" ;; 676 echo "-Wl,--no-as-needed" ;;
622 *Apple*) # Darwin ld
623 echo "-bind_at_load" ;;
624 *)
625 # Some linkers just recognize -V instead of -v
626 case $($(tc-getLD) -V 2>&1 </dev/null) in
627 *Solaris*) # Solaris accept almost the same GNU options
628 echo "-Wl,-z,now" ;;
629 esac
630 ;;
631 esac 677 esac
632} 678}
633 679
634 680fi
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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