| 1 | # Copyright 1999-2008 Gentoo Foundation |
1 | # Copyright 1999-2008 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 1.128 2009/01/02 22:14:18 gengor 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*" |
| 55 | |
55 | |
| 56 | # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing |
56 | # {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 |
57 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
| 58 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
58 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
| 59 | return 0 |
59 | return 0 |
| … | |
… | |
| 75 | gcc-specs-ssp || continue |
75 | gcc-specs-ssp || continue |
| 76 | is-flagq -fno-stack-protector || append-flags -fno-stack-protector;; |
76 | is-flagq -fno-stack-protector || append-flags -fno-stack-protector;; |
| 77 | -fstack-protector-all) |
77 | -fstack-protector-all) |
| 78 | gcc-specs-ssp-to-all || continue |
78 | gcc-specs-ssp-to-all || continue |
| 79 | is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;; |
79 | is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;; |
|
|
80 | -fno-strict-overflow) |
|
|
81 | gcc-specs-nostrict || continue |
|
|
82 | is-flagq -fstrict-overflow || append-flags -fstrict-overflow;; |
| 80 | esac |
83 | esac |
| 81 | done |
84 | done |
| 82 | } |
85 | } |
| 83 | |
86 | |
| 84 | # Remove occurrences of strings from variable given in $1 |
87 | # Remove occurrences of strings from variable given in $1 |
| … | |
… | |
| 173 | [[ $# != 2 ]] \ |
176 | [[ $# != 2 ]] \ |
| 174 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
177 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
| 175 | && die "replace-flags takes 2 arguments, not $#" |
178 | && die "replace-flags takes 2 arguments, not $#" |
| 176 | |
179 | |
| 177 | local f fset |
180 | local f fset |
| 178 | declare -a new_CFLAGS new_CXXFLAGS |
181 | declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS |
| 179 | |
182 | |
| 180 | for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do |
183 | for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do |
| 181 | # Looping over the flags instead of using a global |
184 | # Looping over the flags instead of using a global |
| 182 | # substitution ensures that we're working with flag atoms. |
185 | # substitution ensures that we're working with flag atoms. |
| 183 | # Otherwise globs like -O* have the potential to wipe out the |
186 | # Otherwise globs like -O* have the potential to wipe out the |
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