/[gentoo-x86]/eclass/flag-o-matic.eclass
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1# Copyright 1999-2008 Gentoo Foundation 1# Copyright 1999-2009 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 1.148 2010/05/08 03:47:41 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
31setup-allowed-flags() { 31setup-allowed-flags() {
32 if [[ -z ${ALLOWED_FLAGS} ]] ; then 32 if [[ -z ${ALLOWED_FLAGS} ]] ; then
33 export ALLOWED_FLAGS="-pipe" 33 export ALLOWED_FLAGS="-pipe"
34 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" 34 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
35 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" 35 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
36 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking" 36 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-strict-overflow"
37 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" 37 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time"
38 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+" 38 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+"
39 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident" 39 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident"
40 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w" 40 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w"
41 fi 41 fi
42 # allow a bunch of flags that negate features / control ABI 42 # allow a bunch of flags that negate features / control ABI
43 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \ 43 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \
44 -fno-strict-aliasing -fno-bounds-checking" 44 -fno-strict-aliasing -fno-bounds-checking -fstrict-overflow -fno-omit-frame-pointer"
45 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ 45 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
46 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ 46 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 \
47 -mno-sse4.2 -mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow \
48 -mno-popcnt -mno-abm \
47 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ 49 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -mplt \
48 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ 50 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
49 -mieee -mieee-with-inexact -mschedule \ 51 -mieee -mieee-with-inexact -mschedule \
50 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ 52 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
51 -mflat -mno-flat -mno-faster-structs -mfaster-structs \ 53 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
52 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ 54 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
53 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ 55 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \
54 -msecure-plt -D*" 56 -msecure-plt -m*-toc -D* -U*"
57
58 # 4.5
59 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-fma4 -mno-movbe -mno-xop -mno-lwp"
55 60
56 # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing 61 # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing
57 # NOTE: currently -Os have issues with gcc3 and K6* arch's 62 # NOTE: currently -Os have issues with gcc3 and K6* arch's
58 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" 63 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
59 return 0 64 return 0
71 -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie) 76 -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
72 gcc-specs-pie || continue 77 gcc-specs-pie || continue
73 is-flagq -nopie || append-flags -nopie;; 78 is-flagq -nopie || append-flags -nopie;;
74 -fstack-protector) 79 -fstack-protector)
75 gcc-specs-ssp || continue 80 gcc-specs-ssp || continue
76 is-flagq -fno-stack-protector || append-flags -fno-stack-protector;; 81 is-flagq -fno-stack-protector || append-flags $(test-flags -fno-stack-protector);;
77 -fstack-protector-all) 82 -fstack-protector-all)
78 gcc-specs-ssp-to-all || continue 83 gcc-specs-ssp-to-all || continue
79 is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;; 84 is-flagq -fno-stack-protector-all || append-flags $(test-flags -fno-stack-protector-all);;
85 -fno-strict-overflow)
86 gcc-specs-nostrict || continue
87 is-flagq -fstrict-overflow || append-flags $(test-flags -fstrict-overflow);;
80 esac 88 esac
81 done 89 done
82} 90}
83 91
84# Remove occurrences of strings from variable given in $1 92# Remove occurrences of strings from variable given in $1
131 [[ -z $* ]] && return 0 139 [[ -z $* ]] && return 0
132 export CPPFLAGS="${CPPFLAGS} $*" 140 export CPPFLAGS="${CPPFLAGS} $*"
133 return 0 141 return 0
134} 142}
135 143
144# @FUNCTION: append-cflags
145# @USAGE: <flags>
146# @DESCRIPTION:
147# Add extra <flags> to the current CFLAGS.
148append-cflags() {
149 [[ -z $* ]] && return 0
150 export CFLAGS="${CFLAGS} $*"
151 return 0
152}
153
154# @FUNCTION: append-cxxflags
155# @USAGE: <flags>
156# @DESCRIPTION:
157# Add extra <flags> to the current CXXFLAGS.
158append-cxxflags() {
159 [[ -z $* ]] && return 0
160 export CXXFLAGS="${CXXFLAGS} $*"
161 return 0
162}
163
136# @FUNCTION: append-fflags 164# @FUNCTION: append-fflags
137# @USAGE: <flags> 165# @USAGE: <flags>
138# @DESCRIPTION: 166# @DESCRIPTION:
139# Add extra <flags> to the current {F,FC}FLAGS. 167# Add extra <flags> to the current {F,FC}FLAGS.
140append-fflags() { 168append-fflags() {
156# @USAGE: <flags> 184# @USAGE: <flags>
157# @DESCRIPTION: 185# @DESCRIPTION:
158# Add extra <flags> to your current {C,CXX,F,FC}FLAGS. 186# Add extra <flags> to your current {C,CXX,F,FC}FLAGS.
159append-flags() { 187append-flags() {
160 [[ -z $* ]] && return 0 188 [[ -z $* ]] && return 0
161 export CFLAGS="${CFLAGS} $*" 189 append-cflags "$@"
162 export CXXFLAGS="${CXXFLAGS} $*" 190 append-cxxflags "$@"
163 export FFLAGS="${FFLAGS} $*" 191 append-fflags "$@"
164 export FCFLAGS="${FCFLAGS} $*"
165 return 0 192 return 0
166} 193}
167 194
168# @FUNCTION: replace-flags 195# @FUNCTION: replace-flags
169# @USAGE: <old> <new> 196# @USAGE: <old> <new>
173 [[ $# != 2 ]] \ 200 [[ $# != 2 ]] \
174 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ 201 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
175 && die "replace-flags takes 2 arguments, not $#" 202 && die "replace-flags takes 2 arguments, not $#"
176 203
177 local f fset 204 local f fset
178 declare -a new_CFLAGS new_CXXFLAGS 205 declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS
179 206
180 for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do 207 for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do
181 # Looping over the flags instead of using a global 208 # Looping over the flags instead of using a global
182 # substitution ensures that we're working with flag atoms. 209 # substitution ensures that we're working with flag atoms.
183 # Otherwise globs like -O* have the potential to wipe out the 210 # Otherwise globs like -O* have the potential to wipe out the
299 local NEW_CXXFLAGS="" 326 local NEW_CXXFLAGS=""
300 local NEW_FFLAGS="" 327 local NEW_FFLAGS=""
301 local NEW_FCFLAGS="" 328 local NEW_FCFLAGS=""
302 329
303 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 330 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
304 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then 331 if has "~$(tc-arch)" ${ACCEPT_KEYWORDS} ; then
305 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 332 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
306 fi 333 fi
307 334
308 set -f # disable pathname expansion 335 set -f # disable pathname expansion
309 336
553 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 580 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
554 581
555 # note; this matches only -fstack-protector-all 582 # note; this matches only -fstack-protector-all
556 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ 583 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
557 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ 584 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
558 gcc-specs-ssp-all 585 gcc-specs-ssp-to-all
559} 586}
560 587
561# @FUNCTION: has_ssp 588# @FUNCTION: has_ssp
562# @DESCRIPTION: 589# @DESCRIPTION:
563# DEPRECATED - use gcc-specs-ssp from toolchain-funcs 590# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
640 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 667 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
641 done 668 done
642 fi 669 fi
643 670
644 export CFLAGS CXXFLAGS 671 export CFLAGS CXXFLAGS
672}
673
674# @FUNCTION: append-libs
675# @USAGE: <libs>
676# @DESCRIPTION:
677# Add extra <libs> to the current LIBS.
678append-libs() {
679 [[ -z $* ]] && return 0
680 local flag
681 for flag in "$@"; do
682 [[ ${flag} == -l* ]] && flag=${flag#-l}
683 export LIBS="${LIBS} -l${flag}"
684 done
685
686 return 0
645} 687}
646 688
647# @FUNCTION: append-ldflags 689# @FUNCTION: append-ldflags
648# @USAGE: <flags> 690# @USAGE: <flags>
649# @DESCRIPTION: 691# @DESCRIPTION:
684 set -- "$@" ${x//,/ } 726 set -- "$@" ${x//,/ }
685 done 727 done
686 echo "$@" 728 echo "$@"
687} 729}
688 730
689# @FUNCTION: bindnow-flags 731# @FUNCTION: no-as-needed
690# @RETURN: Returns the flags to enable "now" binding in the current selected linker. 732# @RETURN: Flag to disable asneeded behavior for use with append-ldflags.
691# @DESCRIPTION: 733no-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 734 case $($(tc-getLD) -v 2>&1 </dev/null) in
697 *GNU* | *'with BFD'*) # GNU ld 735 *GNU*) # GNU ld
698 echo "-Wl,-z,now" ;; 736 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 737 esac
709} 738}
710
711 739
712# Some tests for when we screw with things and want to make 740# Some tests for when we screw with things and want to make
713# sure we didn't break anything 741# sure we didn't break anything
714#TESTS() { 742#TESTS() {
715# CFLAGS="-a -b -c=1" 743# CFLAGS="-a -b -c=1"

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