| 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 1.133 2009/04/04 17:57:54 grobian 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 |
| … | |
… | |
| 31 | setup-allowed-flags() { |
31 | setup-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="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \ |
| 44 | -fno-strict-aliasing -fno-bounds-checking" |
44 | -fno-strict-aliasing -fno-bounds-checking -fstrict-overflow" |
| 45 | ALLOWED_FLAGS="${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-3dnow \ |
| 47 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
47 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
| 48 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
48 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
| 49 | -mieee -mieee-with-inexact -mschedule \ |
49 | -mieee -mieee-with-inexact -mschedule \ |
| 50 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
50 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
| 51 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
51 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
| 52 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
52 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
| 53 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ |
53 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ |
| 54 | -msecure-plt -D*" |
54 | -msecure-plt -m*-toc -D* -U*" |
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55 | |
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56 | # killing these two on OSX/Intel will disable SSE, resulting in failing |
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57 | # compilations, as the headers expect SSE to be enabled (Apple knows what |
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58 | # hardware they run on afterall, don't they?) |
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59 | [[ ${CHOST} == i?86-apple-darwin* ]] \ |
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60 | && ALLOWED_FLAGS="${ALLOWED_FLAGS} -march=prescott -march=nocona" |
| 55 | |
61 | |
| 56 | # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing |
62 | # {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 |
63 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
| 58 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
64 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
| 59 | return 0 |
65 | return 0 |
| … | |
… | |
| 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);; |
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86 | -fno-strict-overflow) |
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87 | gcc-specs-nostrict || continue |
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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 |
| … | |
… | |
| 131 | [[ -z $* ]] && return 0 |
140 | [[ -z $* ]] && return 0 |
| 132 | export CPPFLAGS="${CPPFLAGS} $*" |
141 | export CPPFLAGS="${CPPFLAGS} $*" |
| 133 | return 0 |
142 | return 0 |
| 134 | } |
143 | } |
| 135 | |
144 | |
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145 | # @FUNCTION: append-cxxflags |
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146 | # @USAGE: <flags> |
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147 | # @DESCRIPTION: |
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148 | # Add extra <flags> to the current CXXFLAGS. |
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149 | append-cxxflags() { |
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150 | [[ -z $* ]] && return 0 |
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151 | export CXXFLAGS="${CXXFLAGS} $*" |
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152 | return 0 |
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153 | } |
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154 | |
| 136 | # @FUNCTION: append-fflags |
155 | # @FUNCTION: append-fflags |
| 137 | # @USAGE: <flags> |
156 | # @USAGE: <flags> |
| 138 | # @DESCRIPTION: |
157 | # @DESCRIPTION: |
| 139 | # Add extra <flags> to the current {F,FC}FLAGS. |
158 | # Add extra <flags> to the current {F,FC}FLAGS. |
| 140 | append-fflags() { |
159 | append-fflags() { |
| … | |
… | |
| 173 | [[ $# != 2 ]] \ |
192 | [[ $# != 2 ]] \ |
| 174 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
193 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
| 175 | && die "replace-flags takes 2 arguments, not $#" |
194 | && die "replace-flags takes 2 arguments, not $#" |
| 176 | |
195 | |
| 177 | local f fset |
196 | local f fset |
| 178 | declare -a new_CFLAGS new_CXXFLAGS |
197 | declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS |
| 179 | |
198 | |
| 180 | for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do |
199 | for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do |
| 181 | # Looping over the flags instead of using a global |
200 | # Looping over the flags instead of using a global |
| 182 | # substitution ensures that we're working with flag atoms. |
201 | # substitution ensures that we're working with flag atoms. |
| 183 | # Otherwise globs like -O* have the potential to wipe out the |
202 | # Otherwise globs like -O* have the potential to wipe out the |
| … | |
… | |
| 553 | ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 |
572 | ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 |
| 554 | |
573 | |
| 555 | # note; this matches only -fstack-protector-all |
574 | # note; this matches only -fstack-protector-all |
| 556 | [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ |
575 | [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ |
| 557 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ |
576 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ |
| 558 | gcc-specs-ssp-all |
577 | gcc-specs-ssp-to-all |
| 559 | } |
578 | } |
| 560 | |
579 | |
| 561 | # @FUNCTION: has_ssp |
580 | # @FUNCTION: has_ssp |
| 562 | # @DESCRIPTION: |
581 | # @DESCRIPTION: |
| 563 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
582 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
| … | |
… | |
| 689 | # @FUNCTION: bindnow-flags |
708 | # @FUNCTION: bindnow-flags |
| 690 | # @RETURN: Returns the flags to enable "now" binding in the current selected linker. |
709 | # @RETURN: Returns the flags to enable "now" binding in the current selected linker. |
| 691 | # @DESCRIPTION: |
710 | # @DESCRIPTION: |
| 692 | # DEPRECATED - Gets the flags needed for "NOW" binding |
711 | # DEPRECATED - Gets the flags needed for "NOW" binding |
| 693 | bindnow-flags() { |
712 | bindnow-flags() { |
| 694 | ewarn "QA: stop using the bindnow-flags function ... simply drop it from your ebuild" >&2 |
713 | ewarn "QA: stop using the bindnow-flags function ... simply drop it from your ebuild" |
| 695 | |
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| 696 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
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| 697 | *GNU* | *'with BFD'*) # GNU ld |
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| 698 | echo "-Wl,-z,now" ;; |
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| 699 | *Apple*) # Darwin ld |
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| 700 | echo "-bind_at_load" ;; |
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| 701 | *) |
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| 702 | # Some linkers just recognize -V instead of -v |
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| 703 | case $($(tc-getLD) -V 2>&1 </dev/null) in |
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| 704 | *Solaris*) # Solaris accept almost the same GNU options |
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| 705 | echo "-Wl,-z,now" ;; |
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| 706 | esac |
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| 707 | ;; |
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| 708 | esac |
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| 709 | } |
714 | } |
| 710 | |
715 | |
| 711 | |
716 | |
| 712 | # Some tests for when we screw with things and want to make |
717 | # Some tests for when we screw with things and want to make |
| 713 | # sure we didn't break anything |
718 | # sure we didn't break anything |
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