/[gentoo-x86]/eclass/flag-o-matic.eclass
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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 1.164 2012/01/13 22:40:29 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
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
… …
27 30
28 31
29# {C,CXX,F,FC}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,CXX,F,FC}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 $1
… …
102} 111}
103 112
104# @FUNCTION: filter-flags 113# @FUNCTION: filter-flags
105# @USAGE: <flags> 114# @USAGE: <flags>
106# @DESCRIPTION: 115# @DESCRIPTION:
107# Remove particular <flags> from {C,CPP,CXX,F,FC}FLAGS. Accepts shell globs. 116# Remove particular <flags> from {C,CPP,CXX,F,FC,LD}FLAGS. Accepts shell globs.
108filter-flags() { 117filter-flags() {
109 _filter-hardened "$@" 118 _filter-hardened "$@"
119 local v
120 for v in C CPP CXX F FC LD ; do
110 _filter-var CFLAGS "$@" 121 _filter-var ${v}FLAGS "$@"
111 _filter-var CPPFLAGS "$@" 122 done
112 _filter-var CXXFLAGS "$@"
113 _filter-var FFLAGS "$@"
114 _filter-var FCFLAGS "$@"
115 return 0 123 return 0
116} 124}
117 125
118# @FUNCTION: filter-lfs-flags 126# @FUNCTION: filter-lfs-flags
119# @DESCRIPTION: 127# @DESCRIPTION:
120# Remove flags that enable Large File Support. 128# Remove flags that enable Large File Support.
121filter-lfs-flags() { 129filter-lfs-flags() {
122 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" 130 [[ $# -ne 0 ]] && die "filter-lfs-flags takes no arguments"
131 # http://www.gnu.org/s/libc/manual/html_node/Feature-Test-Macros.html
132 # _LARGEFILE_SOURCE: enable support for new LFS funcs (ftello/etc...)
133 # _LARGEFILE64_SOURCE: enable support for 64bit variants (off64_t/fseeko64/etc...)
134 # _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 135 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
124} 136}
125 137
126# @FUNCTION: append-cppflags 138# @FUNCTION: append-cppflags
127# @USAGE: <flags> 139# @USAGE: <flags>
128# @DESCRIPTION: 140# @DESCRIPTION:
129# Add extra <flags> to the current CPPFLAGS. 141# Add extra <flags> to the current CPPFLAGS.
130append-cppflags() { 142append-cppflags() {
131 [[ -z $* ]] && return 0 143 [[ $# -eq 0 ]] && return 0
132 export CPPFLAGS="${CPPFLAGS} $*" 144 export CPPFLAGS="${CPPFLAGS} $*"
145 return 0
146}
147
148# @FUNCTION: append-cflags
149# @USAGE: <flags>
150# @DESCRIPTION:
151# Add extra <flags> to the current CFLAGS.
152append-cflags() {
153 [[ $# -eq 0 ]] && return 0
154 export CFLAGS=$(test-flags-CC ${CFLAGS} "$@")
155 return 0
156}
157
158# @FUNCTION: append-cxxflags
159# @USAGE: <flags>
160# @DESCRIPTION:
161# Add extra <flags> to the current CXXFLAGS.
162append-cxxflags() {
163 [[ $# -eq 0 ]] && return 0
164 export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS} "$@")
133 return 0 165 return 0
134} 166}
135 167
136# @FUNCTION: append-fflags 168# @FUNCTION: append-fflags
137# @USAGE: <flags> 169# @USAGE: <flags>
138# @DESCRIPTION: 170# @DESCRIPTION:
139# Add extra <flags> to the current {F,FC}FLAGS. 171# Add extra <flags> to the current {F,FC}FLAGS.
140append-fflags() { 172append-fflags() {
141 [[ -z $* ]] && return 0 173 [[ $# -eq 0 ]] && return 0
142 export FFLAGS="${FFLAGS} $*" 174 export FFLAGS=$(test-flags-F77 ${FFLAGS} "$@")
143 export FCFLAGS="${FCFLAGS} $*" 175 export FCFLAGS=$(test-flags-FC ${FCFLAGS} "$@")
144 return 0 176 return 0
145} 177}
146 178
147# @FUNCTION: append-lfs-flags 179# @FUNCTION: append-lfs-flags
148# @DESCRIPTION: 180# @DESCRIPTION:
149# Add flags that enable Large File Support. 181# Add flags that enable Large File Support.
150append-lfs-flags() { 182append-lfs-flags() {
151 [[ -n $@ ]] && die "append-lfs-flags takes no arguments" 183 [[ $# -ne 0 ]] && die "append-lfs-flags takes no arguments"
184 # 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 185 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
153} 186}
154 187
155# @FUNCTION: append-flags 188# @FUNCTION: append-flags
156# @USAGE: <flags> 189# @USAGE: <flags>
157# @DESCRIPTION: 190# @DESCRIPTION:
158# Add extra <flags> to your current {C,CXX,F,FC}FLAGS. 191# Add extra <flags> to your current {C,CXX,F,FC}FLAGS.
159append-flags() { 192append-flags() {
160 [[ -z $* ]] && return 0 193 [[ $# -eq 0 ]] && return 0
161 export CFLAGS="${CFLAGS} $*" 194 append-cflags "$@"
162 export CXXFLAGS="${CXXFLAGS} $*" 195 append-cxxflags "$@"
163 export FFLAGS="${FFLAGS} $*" 196 append-fflags "$@"
164 export FCFLAGS="${FCFLAGS} $*"
165 return 0 197 return 0
166} 198}
167 199
168# @FUNCTION: replace-flags 200# @FUNCTION: replace-flags
169# @USAGE: <old> <new> 201# @USAGE: <old> <new>
… …
173 [[ $# != 2 ]] \ 205 [[ $# != 2 ]] \
174 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ 206 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
175 && die "replace-flags takes 2 arguments, not $#" 207 && die "replace-flags takes 2 arguments, not $#"
176 208
177 local f fset 209 local f fset
178 declare -a new_CFLAGS new_CXXFLAGS 210 declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS
179 211
180 for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do 212 for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do
181 # Looping over the flags instead of using a global 213 # Looping over the flags instead of using a global
182 # substitution ensures that we're working with flag atoms. 214 # substitution ensures that we're working with flag atoms.
183 # Otherwise globs like -O* have the potential to wipe out the 215 # Otherwise globs like -O* have the potential to wipe out the
… …
298 local NEW_CFLAGS="" 330 local NEW_CFLAGS=""
299 local NEW_CXXFLAGS="" 331 local NEW_CXXFLAGS=""
300 local NEW_FFLAGS="" 332 local NEW_FFLAGS=""
301 local NEW_FCFLAGS="" 333 local NEW_FCFLAGS=""
302 334
303 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
304 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
305 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
306 fi
307
308 set -f # disable pathname expansion 335 set -f # disable pathname expansion
309 336
310 for x in ${CFLAGS}; do 337 for x in ${CFLAGS}; do
311 for y in ${ALLOWED_FLAGS}; do 338 for y in ${ALLOWED_FLAGS}; do
312 flag=${x%%=*} 339 flag=${x%%=*}
… …
372 399
373test-flag-PROG() { 400test-flag-PROG() {
374 local comp=$1 401 local comp=$1
375 local flags="$2" 402 local flags="$2"
376 403
377 [[ -z ${comp} || -z ${flags} ]] && \ 404 [[ -z ${comp} || -z ${flags} ]] && return 1
378 return 1
379 405
406 # use -c so we can test the assembler as well
380 local PROG=$(tc-get${comp}) 407 local PROG=$(tc-get${comp})
381 ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ 408 ${PROG} ${flags} -c -o /dev/null -xc /dev/null \
382 > /dev/null 2>&1 409 > /dev/null 2>&1
383} 410}
384 411
385# @FUNCTION: test-flag-CC 412# @FUNCTION: test-flag-CC
386# @USAGE: <flag> 413# @USAGE: <flag>
… …
413 440
414 shift 441 shift
415 442
416 [[ -z ${comp} ]] && return 1 443 [[ -z ${comp} ]] && return 1
417 444
418 x=""
419 for x in "$@" ; do 445 for x in "$@" ; do
420 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}" 446 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
421 done 447 done
422 448
423 echo "${flags}" 449 echo "${flags}"
… …
454# @USAGE: <flags> 480# @USAGE: <flags>
455# @DESCRIPTION: 481# @DESCRIPTION:
456# Short-hand that should hopefully work for both C and C++ compiler, but 482# Short-hand that should hopefully work for both C and C++ compiler, but
457# its really only present due to the append-flags() abomination. 483# its really only present due to the append-flags() abomination.
458test-flags() { test-flags-CC "$@"; } 484test-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}
468 485
469# @FUNCTION: test_version_info 486# @FUNCTION: test_version_info
470# @USAGE: <version> 487# @USAGE: <version>
471# @DESCRIPTION: 488# @DESCRIPTION:
472# Returns shell true if the current C compiler version matches <version>, else returns shell false. 489# Returns shell true if the current C compiler version matches <version>, else returns shell false.
… …
508 fi 525 fi
509 done 526 done
510 return 1 527 return 1
511} 528}
512 529
513# @FUNCTION: has_hardened 530# DEAD FUNCS. Remove by Dec 2011.
514# @DESCRIPTION: 531test_flag() { die "$0: deprecated, please use test-flags()!" ; }
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 532has_hardened() { die "$0: deprecated, please use gcc-specs-{relro,now}()!" ; }
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 533has_pic() { die "$0: deprecated, please use gcc-specs-pie()!" ; }
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 534has_pie() { die "$0: deprecated, please use gcc-specs-pie()!" ; }
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 535has_ssp_all() { die "$0: deprecated, please use gcc-specs-ssp()!" ; }
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 536has_ssp() { die "$0: deprecated, please use gcc-specs-ssp()!" ; }
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}
573 537
574# @FUNCTION: has_m64 538# @FUNCTION: has_m64
575# @DESCRIPTION: 539# @DESCRIPTION:
576# This doesn't test if the flag is accepted, it tests if the flag actually 540# 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 541# WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works
… …
642 fi 606 fi
643 607
644 export CFLAGS CXXFLAGS 608 export CFLAGS CXXFLAGS
645} 609}
646 610
611# @FUNCTION: append-libs
612# @USAGE: <libs>
613# @DESCRIPTION:
614# Add extra <libs> to the current LIBS.
615append-libs() {
616 [[ $# -eq 0 ]] && return 0
617 local flag
618 for flag in "$@"; do
619 [[ ${flag} == -l* ]] && flag=${flag#-l}
620 export LIBS="${LIBS} -l${flag}"
621 done
622
623 return 0
624}
625
647# @FUNCTION: append-ldflags 626# @FUNCTION: append-ldflags
648# @USAGE: <flags> 627# @USAGE: <flags>
649# @DESCRIPTION: 628# @DESCRIPTION:
650# Add extra <flags> to the current LDFLAGS. 629# Add extra <flags> to the current LDFLAGS.
651append-ldflags() { 630append-ldflags() {
652 [[ -z $* ]] && return 0 631 [[ $# -eq 0 ]] && return 0
653 local flag 632 local flag
654 for flag in "$@"; do 633 for flag in "$@"; do
655 [[ ${flag} == -l* ]] && \ 634 [[ ${flag} == -l* ]] && \
656 ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS" 635 ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS"
657 done 636 done
… …
668 _filter-var LDFLAGS "$@" 647 _filter-var LDFLAGS "$@"
669 return 0 648 return 0
670} 649}
671 650
672# @FUNCTION: raw-ldflags 651# @FUNCTION: raw-ldflags
673# @USAGE: <flags> 652# @USAGE: [flags]
674# @DESCRIPTION: 653# @DESCRIPTION:
675# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results 654# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
676# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed 655# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
677# to gcc where it needs the '-Wl,'. 656# to gcc where it needs the '-Wl,'.
657#
658# If no flags are specified, then default to ${LDFLAGS}.
678raw-ldflags() { 659raw-ldflags() {
679 local x input="$@" 660 local x input="$@"
680 [[ -z ${input} ]] && input=${LDFLAGS} 661 [[ -z ${input} ]] && input=${LDFLAGS}
681 set -- 662 set --
682 for x in ${input} ; do 663 for x in ${input} ; do
… …
684 set -- "$@" ${x//,/ } 665 set -- "$@" ${x//,/ }
685 done 666 done
686 echo "$@" 667 echo "$@"
687} 668}
688 669
689# @FUNCTION: bindnow-flags 670# @FUNCTION: no-as-needed
690# @RETURN: Returns the flags to enable "now" binding in the current selected linker. 671# @RETURN: Flag to disable asneeded behavior for use with append-ldflags.
691# @DESCRIPTION: 672no-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 673 case $($(tc-getLD) -v 2>&1 </dev/null) in
697 *GNU* | *'with BFD'*) # GNU ld 674 *GNU*) # GNU ld
698 echo "-Wl,-z,now" ;; 675 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 676 esac
709} 677}
710 678
711 679fi
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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