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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 1.124 2008/07/03 05:30:54 dberkholz Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.166 2012/01/14 08:22:13 vapier 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 12
13if [[ ${___ECLASS_ONCE_FLAG_O_MATIC} != "recur -_+^+_- spank" ]] ; then
14___ECLASS_ONCE_FLAG_O_MATIC="recur -_+^+_- spank"
15
13inherit eutils toolchain-funcs multilib 16inherit eutils toolchain-funcs multilib
14
15################ DEPRECATED functions ################
16# The following are still present to avoid breaking existing
17# code more than necessary; however they are deprecated. Please
18# use gcc-specs-* from toolchain-funcs.eclass instead, if you
19# need to know which hardened techs are active in the compiler.
20# See bug #100974
21#
22# has_hardened
23# has_pie
24# has_pic
25# has_ssp_all
26# has_ssp
27
28 17
29# {C,CXX,F,FC}FLAGS that we allow in strip-flags 18# {C,CXX,F,FC}FLAGS that we allow in strip-flags
30# Note: shell globs and character lists are allowed 19# Note: shell globs and character lists are allowed
31setup-allowed-flags() { 20setup-allowed-flags() {
32 if [[ -z ${ALLOWED_FLAGS} ]] ; then
33 export ALLOWED_FLAGS="-pipe" 21 ALLOWED_FLAGS="-pipe"
34 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" 22 ALLOWED_FLAGS+=" -O -O1 -O2 -Os -mcpu -march -mtune"
35 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" 23 ALLOWED_FLAGS+=" -fstack-protector -fstack-protector-all"
36 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking" 24 ALLOWED_FLAGS+=" -fbounds-checking -fno-strict-overflow"
37 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" 25 ALLOWED_FLAGS+=" -fno-PIE -fno-pie -fno-unit-at-a-time"
38 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+" 26 ALLOWED_FLAGS+=" -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+"
39 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident" 27 ALLOWED_FLAGS+=" -fno-ident -fpermissive"
40 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w" 28 ALLOWED_FLAGS+=" -W* -w"
41 fi 29
42 # allow a bunch of flags that negate features / control ABI 30 # allow a bunch of flags that negate features / control ABI
43 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \ 31 ALLOWED_FLAGS+=" -fno-stack-protector -fno-stack-protector-all \
44 -fno-strict-aliasing -fno-bounds-checking" 32 -fno-strict-aliasing -fno-bounds-checking -fstrict-overflow \
33 -fno-omit-frame-pointer"
45 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ 34 ALLOWED_FLAGS+=" -mregparm -mno-app-regs -mapp-regs -mno-mmx -mno-sse \
46 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ 35 -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 -mno-sse4.2 \
36 -mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow -mno-popcnt \
47 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ 37 -mno-abm -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -mplt \
48 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ 38 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
49 -mieee -mieee-with-inexact -mschedule \ 39 -mieee -mieee-with-inexact -mschedule -mfloat-gprs -mspe -mno-spe \
50 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ 40 -mtls-direct-seg-refs -mno-tls-direct-seg-refs -mflat -mno-flat \
51 -mflat -mno-flat -mno-faster-structs -mfaster-structs \ 41 -mno-faster-structs -mfaster-structs -m32 -m64 -mx32 -mabi \
52 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ 42 -mlittle-endian -mbig-endian -EL -EB -fPIC -mlive-g0 -mcmodel \
53 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ 43 -mstack-bias -mno-stack-bias -msecure-plt -m*-toc -D* -U*"
54 -msecure-plt -D*"
55 44
56 # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing 45 # 4.5
57 # NOTE: currently -Os have issues with gcc3 and K6* arch's 46 ALLOWED_FLAGS+=" -mno-fma4 -mno-movbe -mno-xop -mno-lwp"
58 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" 47 # 4.6
48 ALLOWED_FLAGS+=" -mno-fsgsbase -mno-rdrnd -mno-f16c -mno-bmi -mno-tbm"
49
50 export ALLOWED_FLAGS
59 return 0 51 return 0
60} 52}
61 53
62# inverted filters for hardened compiler. This is trying to unpick 54# inverted filters for hardened compiler. This is trying to unpick
63# the hardened compiler defaults. 55# the hardened compiler defaults.
71 -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie) 63 -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
72 gcc-specs-pie || continue 64 gcc-specs-pie || continue
73 is-flagq -nopie || append-flags -nopie;; 65 is-flagq -nopie || append-flags -nopie;;
74 -fstack-protector) 66 -fstack-protector)
75 gcc-specs-ssp || continue 67 gcc-specs-ssp || continue
76 is-flagq -fno-stack-protector || append-flags -fno-stack-protector;; 68 is-flagq -fno-stack-protector || append-flags $(test-flags -fno-stack-protector);;
77 -fstack-protector-all) 69 -fstack-protector-all)
78 gcc-specs-ssp-to-all || continue 70 gcc-specs-ssp-to-all || continue
79 is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;; 71 is-flagq -fno-stack-protector-all || append-flags $(test-flags -fno-stack-protector-all);;
72 -fno-strict-overflow)
73 gcc-specs-nostrict || continue
74 is-flagq -fstrict-overflow || append-flags $(test-flags -fstrict-overflow);;
80 esac 75 esac
81 done 76 done
82} 77}
83 78
84# Remove occurrences of strings from variable given in $1 79# Remove occurrences of strings from variable given in $1
102} 97}
103 98
104# @FUNCTION: filter-flags 99# @FUNCTION: filter-flags
105# @USAGE: <flags> 100# @USAGE: <flags>
106# @DESCRIPTION: 101# @DESCRIPTION:
107# Remove particular <flags> from {C,CPP,CXX,F,FC}FLAGS. Accepts shell globs. 102# Remove particular <flags> from {C,CPP,CXX,F,FC,LD}FLAGS. Accepts shell globs.
108filter-flags() { 103filter-flags() {
109 _filter-hardened "$@" 104 _filter-hardened "$@"
105 local v
106 for v in C CPP CXX F FC LD ; do
110 _filter-var CFLAGS "$@" 107 _filter-var ${v}FLAGS "$@"
111 _filter-var CPPFLAGS "$@" 108 done
112 _filter-var CXXFLAGS "$@"
113 _filter-var FFLAGS "$@"
114 _filter-var FCFLAGS "$@"
115 return 0 109 return 0
116} 110}
117 111
118# @FUNCTION: filter-lfs-flags 112# @FUNCTION: filter-lfs-flags
119# @DESCRIPTION: 113# @DESCRIPTION:
120# Remove flags that enable Large File Support. 114# Remove flags that enable Large File Support.
121filter-lfs-flags() { 115filter-lfs-flags() {
122 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" 116 [[ $# -ne 0 ]] && die "filter-lfs-flags takes no arguments"
117 # http://www.gnu.org/s/libc/manual/html_node/Feature-Test-Macros.html
118 # _LARGEFILE_SOURCE: enable support for new LFS funcs (ftello/etc...)
119 # _LARGEFILE64_SOURCE: enable support for 64bit variants (off64_t/fseeko64/etc...)
120 # _FILE_OFFSET_BITS: default to 64bit variants (off_t is defined as off64_t)
123 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
124} 122}
125 123
126# @FUNCTION: append-cppflags 124# @FUNCTION: append-cppflags
127# @USAGE: <flags> 125# @USAGE: <flags>
128# @DESCRIPTION: 126# @DESCRIPTION:
129# Add extra <flags> to the current CPPFLAGS. 127# Add extra <flags> to the current CPPFLAGS.
130append-cppflags() { 128append-cppflags() {
131 [[ -z $* ]] && return 0 129 [[ $# -eq 0 ]] && return 0
132 export CPPFLAGS="${CPPFLAGS} $*" 130 export CPPFLAGS="${CPPFLAGS} $*"
131 return 0
132}
133
134# @FUNCTION: append-cflags
135# @USAGE: <flags>
136# @DESCRIPTION:
137# Add extra <flags> to the current CFLAGS.
138append-cflags() {
139 [[ $# -eq 0 ]] && return 0
140 export CFLAGS=$(test-flags-CC ${CFLAGS} "$@")
141 return 0
142}
143
144# @FUNCTION: append-cxxflags
145# @USAGE: <flags>
146# @DESCRIPTION:
147# Add extra <flags> to the current CXXFLAGS.
148append-cxxflags() {
149 [[ $# -eq 0 ]] && return 0
150 export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS} "$@")
133 return 0 151 return 0
134} 152}
135 153
136# @FUNCTION: append-fflags 154# @FUNCTION: append-fflags
137# @USAGE: <flags> 155# @USAGE: <flags>
138# @DESCRIPTION: 156# @DESCRIPTION:
139# Add extra <flags> to the current {F,FC}FLAGS. 157# Add extra <flags> to the current {F,FC}FLAGS.
140append-fflags() { 158append-fflags() {
141 [[ -z $* ]] && return 0 159 [[ $# -eq 0 ]] && return 0
142 export FFLAGS="${FFLAGS} $*" 160 export FFLAGS=$(test-flags-F77 ${FFLAGS} "$@")
143 export FCFLAGS="${FCFLAGS} $*" 161 export FCFLAGS=$(test-flags-FC ${FCFLAGS} "$@")
144 return 0 162 return 0
145} 163}
146 164
147# @FUNCTION: append-lfs-flags 165# @FUNCTION: append-lfs-flags
148# @DESCRIPTION: 166# @DESCRIPTION:
149# Add flags that enable Large File Support. 167# Add flags that enable Large File Support.
150append-lfs-flags() { 168append-lfs-flags() {
151 [[ -n $@ ]] && die "append-lfs-flags takes no arguments" 169 [[ $# -ne 0 ]] && die "append-lfs-flags takes no arguments"
170 # see comments in filter-lfs-flags func for meaning of these
152 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 171 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
153} 172}
154 173
155# @FUNCTION: append-flags 174# @FUNCTION: append-flags
156# @USAGE: <flags> 175# @USAGE: <flags>
157# @DESCRIPTION: 176# @DESCRIPTION:
158# Add extra <flags> to your current {C,CXX,F,FC}FLAGS. 177# Add extra <flags> to your current {C,CXX,F,FC}FLAGS.
159append-flags() { 178append-flags() {
160 [[ -z $* ]] && return 0 179 [[ $# -eq 0 ]] && return 0
161 export CFLAGS="${CFLAGS} $*" 180 append-cflags "$@"
162 export CXXFLAGS="${CXXFLAGS} $*" 181 append-cxxflags "$@"
163 export FFLAGS="${FFLAGS} $*" 182 append-fflags "$@"
164 export FCFLAGS="${FCFLAGS} $*"
165 return 0 183 return 0
166} 184}
167 185
168# @FUNCTION: replace-flags 186# @FUNCTION: replace-flags
169# @USAGE: <old> <new> 187# @USAGE: <old> <new>
173 [[ $# != 2 ]] \ 191 [[ $# != 2 ]] \
174 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ 192 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
175 && die "replace-flags takes 2 arguments, not $#" 193 && die "replace-flags takes 2 arguments, not $#"
176 194
177 local f fset 195 local f fset
178 declare -a new_CFLAGS new_CXXFLAGS 196 declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS
179 197
180 for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do 198 for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do
181 # Looping over the flags instead of using a global 199 # Looping over the flags instead of using a global
182 # substitution ensures that we're working with flag atoms. 200 # substitution ensures that we're working with flag atoms.
183 # Otherwise globs like -O* have the potential to wipe out the 201 # Otherwise globs like -O* have the potential to wipe out the
298 local NEW_CFLAGS="" 316 local NEW_CFLAGS=""
299 local NEW_CXXFLAGS="" 317 local NEW_CXXFLAGS=""
300 local NEW_FFLAGS="" 318 local NEW_FFLAGS=""
301 local NEW_FCFLAGS="" 319 local NEW_FCFLAGS=""
302 320
303 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
304 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
305 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
306 fi
307
308 set -f # disable pathname expansion 321 set -f # disable pathname expansion
309 322
310 for x in ${CFLAGS}; do 323 for x in ${CFLAGS}; do
311 for y in ${ALLOWED_FLAGS}; do 324 for y in ${ALLOWED_FLAGS}; do
312 flag=${x%%=*} 325 flag=${x%%=*}
372 385
373test-flag-PROG() { 386test-flag-PROG() {
374 local comp=$1 387 local comp=$1
375 local flags="$2" 388 local flags="$2"
376 389
377 [[ -z ${comp} || -z ${flags} ]] && \ 390 [[ -z ${comp} || -z ${flags} ]] && return 1
378 return 1
379 391
392 # use -c so we can test the assembler as well
380 local PROG=$(tc-get${comp}) 393 local PROG=$(tc-get${comp})
381 ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ 394 ${PROG} ${flags} -c -o /dev/null -xc /dev/null \
382 > /dev/null 2>&1 395 > /dev/null 2>&1
383} 396}
384 397
385# @FUNCTION: test-flag-CC 398# @FUNCTION: test-flag-CC
386# @USAGE: <flag> 399# @USAGE: <flag>
413 426
414 shift 427 shift
415 428
416 [[ -z ${comp} ]] && return 1 429 [[ -z ${comp} ]] && return 1
417 430
418 x=""
419 for x in "$@" ; do 431 for x in "$@" ; do
420 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}" 432 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
421 done 433 done
422 434
423 echo "${flags}" 435 echo "${flags}"
454# @USAGE: <flags> 466# @USAGE: <flags>
455# @DESCRIPTION: 467# @DESCRIPTION:
456# Short-hand that should hopefully work for both C and C++ compiler, but 468# Short-hand that should hopefully work for both C and C++ compiler, but
457# its really only present due to the append-flags() abomination. 469# its really only present due to the append-flags() abomination.
458test-flags() { test-flags-CC "$@"; } 470test-flags() { test-flags-CC "$@"; }
459
460# @FUNCTION: test_flag
461# @DESCRIPTION:
462# DEPRICIATED, use test-flags()
463test_flag() {
464 ewarn "test_flag: deprecated, please use test-flags()!" >&2
465
466 test-flags-CC "$@"
467}
468 471
469# @FUNCTION: test_version_info 472# @FUNCTION: test_version_info
470# @USAGE: <version> 473# @USAGE: <version>
471# @DESCRIPTION: 474# @DESCRIPTION:
472# Returns shell true if the current C compiler version matches <version>, else returns shell false. 475# Returns shell true if the current C compiler version matches <version>, else returns shell false.
508 fi 511 fi
509 done 512 done
510 return 1 513 return 1
511} 514}
512 515
513# @FUNCTION: has_hardened
514# @DESCRIPTION:
515# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
516has_hardened() {
517 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
518
519 test_version_info Hardened && return 0
520 # The specs file wont exist unless gcc has GCC_SPECS support
521 [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
522}
523
524# @FUNCTION: has_pic
525# @DESCRIPTION:
526# DEPRECATED - use gcc-specs-pie from toolchain-funcs
527# indicate whether PIC is set
528has_pic() {
529 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
530
531 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
532 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
533 gcc-specs-pie
534}
535
536# @FUNCTION: has_pie
537# @DESCRIPTION:
538# DEPRECATED - use gcc-specs-pie from toolchain-funcs
539# indicate whether PIE is set
540has_pie() {
541 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
542
543 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
544 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
545 gcc-specs-pie
546}
547
548# @FUNCTION: has_ssp_all
549# @DESCRIPTION:
550# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
551# indicate whether code for SSP is being generated for all functions
552has_ssp_all() {
553 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
554
555 # note; this matches only -fstack-protector-all
556 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
557 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
558 gcc-specs-ssp-all
559}
560
561# @FUNCTION: has_ssp
562# @DESCRIPTION:
563# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
564# indicate whether code for SSP is being generated
565has_ssp() {
566 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
567
568 # note; this matches both -fstack-protector and -fstack-protector-all
569 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
570 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
571 gcc-specs-ssp
572}
573
574# @FUNCTION: has_m64 516# @FUNCTION: has_m64
575# @DESCRIPTION: 517# @DESCRIPTION:
576# This doesn't test if the flag is accepted, it tests if the flag actually 518# This doesn't test if the flag is accepted, it tests if the flag actually
577# WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works 519# WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works
578# return code is 0, else the return code is 1. 520# return code is 0, else the return code is 1.
579has_m64() { 521has_m64() {
522 eqawarn "${FUNCNAME}: don't use this anymore"
523
580 # this doesnt test if the flag is accepted, it tests if the flag 524 # this doesnt test if the flag is accepted, it tests if the flag
581 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 525 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
582 # please dont replace this function with test_flag in some future 526 # please dont replace this function with test_flag in some future
583 # clean-up! 527 # clean-up!
584 528
590 rm -f "${temp}".c 534 rm -f "${temp}".c
591 [[ ${ret} != 1 ]] && return 0 535 [[ ${ret} != 1 ]] && return 0
592 return 1 536 return 1
593} 537}
594 538
595# @FUNCTION: has_m32
596# @DESCRIPTION:
597# This doesn't test if the flag is accepted, it tests if the flag actually
598# WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return
599# code is 0, else return code is 1.
600has_m32() { 539has_m32() {
601 # this doesnt test if the flag is accepted, it tests if the flag 540 die "${FUNCNAME}: don't use this anymore"
602 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
603 # please dont replace this function with test_flag in some future
604 # clean-up!
605
606 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
607
608 local temp=$(emktemp)
609 echo "int main() { return(0); }" > "${temp}".c
610 MY_CC=$(tc-getCC)
611 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
612 local ret=$?
613 rm -f "${temp}".c
614 [[ ${ret} != 1 ]] && return 0
615 return 1
616} 541}
617 542
618# @FUNCTION: replace-sparc64-flags 543# @FUNCTION: replace-sparc64-flags
619# @DESCRIPTION: 544# @DESCRIPTION:
620# Sets mcpu to v8 and uses the original value as mtune if none specified. 545# Sets mcpu to v8 and uses the original value as mtune if none specified.
642 fi 567 fi
643 568
644 export CFLAGS CXXFLAGS 569 export CFLAGS CXXFLAGS
645} 570}
646 571
572# @FUNCTION: append-libs
573# @USAGE: <libs>
574# @DESCRIPTION:
575# Add extra <libs> to the current LIBS.
576append-libs() {
577 [[ $# -eq 0 ]] && return 0
578 local flag
579 for flag in "$@"; do
580 [[ ${flag} == -l* ]] && flag=${flag#-l}
581 export LIBS="${LIBS} -l${flag}"
582 done
583
584 return 0
585}
586
647# @FUNCTION: append-ldflags 587# @FUNCTION: append-ldflags
648# @USAGE: <flags> 588# @USAGE: <flags>
649# @DESCRIPTION: 589# @DESCRIPTION:
650# Add extra <flags> to the current LDFLAGS. 590# Add extra <flags> to the current LDFLAGS.
651append-ldflags() { 591append-ldflags() {
652 [[ -z $* ]] && return 0 592 [[ $# -eq 0 ]] && return 0
653 local flag 593 local flag
654 for flag in "$@"; do 594 for flag in "$@"; do
655 [[ ${flag} == -l* ]] && \ 595 [[ ${flag} == -l* ]] && \
656 ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS" 596 ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS"
657 done 597 done
668 _filter-var LDFLAGS "$@" 608 _filter-var LDFLAGS "$@"
669 return 0 609 return 0
670} 610}
671 611
672# @FUNCTION: raw-ldflags 612# @FUNCTION: raw-ldflags
673# @USAGE: <flags> 613# @USAGE: [flags]
674# @DESCRIPTION: 614# @DESCRIPTION:
675# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results 615# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
676# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed 616# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
677# to gcc where it needs the '-Wl,'. 617# to gcc where it needs the '-Wl,'.
618#
619# If no flags are specified, then default to ${LDFLAGS}.
678raw-ldflags() { 620raw-ldflags() {
679 local x input="$@" 621 local x input="$@"
680 [[ -z ${input} ]] && input=${LDFLAGS} 622 [[ -z ${input} ]] && input=${LDFLAGS}
681 set -- 623 set --
682 for x in ${input} ; do 624 for x in ${input} ; do
684 set -- "$@" ${x//,/ } 626 set -- "$@" ${x//,/ }
685 done 627 done
686 echo "$@" 628 echo "$@"
687} 629}
688 630
689# @FUNCTION: bindnow-flags 631# @FUNCTION: no-as-needed
690# @RETURN: Returns the flags to enable "now" binding in the current selected linker. 632# @RETURN: Flag to disable asneeded behavior for use with append-ldflags.
691# @DESCRIPTION: 633no-as-needed() {
692# DEPRECATED - Gets the flags needed for "NOW" binding
693bindnow-flags() {
694 ewarn "QA: stop using the bindnow-flags function ... simply drop it from your ebuild" >&2
695
696 case $($(tc-getLD) -v 2>&1 </dev/null) in 634 case $($(tc-getLD) -v 2>&1 </dev/null) in
697 *GNU* | *'with BFD'*) # GNU ld 635 *GNU*) # GNU ld
698 echo "-Wl,-z,now" ;; 636 echo "-Wl,--no-as-needed" ;;
699 *Apple*) # Darwin ld
700 echo "-bind_at_load" ;;
701 *)
702 # Some linkers just recognize -V instead of -v
703 case $($(tc-getLD) -V 2>&1 </dev/null) in
704 *Solaris*) # Solaris accept almost the same GNU options
705 echo "-Wl,-z,now" ;;
706 esac
707 ;;
708 esac 637 esac
709} 638}
710 639
711 640fi
712# Some tests for when we screw with things and want to make
713# sure we didn't break anything
714#TESTS() {
715# CFLAGS="-a -b -c=1"
716# CXXFLAGS="-x -y -z=2"
717# LDFLAGS="-l -m -n=3"
718#
719# die() { exit 1; }
720# (is-flag 1 2 3) && die
721# (is-ldflag 1 2 3) && die
722#
723# is-flagq -l && die
724# is-ldflagq -a && die
725# is-flagq -a || die
726# is-flagq -x || die
727# is-ldflagq -n=* || die
728# is-ldflagq -n && die
729#
730# strip-unsupported-flags
731# [[ ${CFLAGS} == "-c=1" ]] || die
732# [[ ${CXXFLAGS} == "-y -z=2" ]] || die
733#
734# echo "All tests pass"
735#}
736#TESTS

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