1 | # Copyright 1999-2008 Gentoo Foundation |
1 | # Copyright 1999-2012 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 1.179 2012/10/30 20:51:44 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 | |
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13 | if [[ ${___ECLASS_ONCE_FLAG_O_MATIC} != "recur -_+^+_- spank" ]] ; then |
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14 | ___ECLASS_ONCE_FLAG_O_MATIC="recur -_+^+_- spank" |
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15 | |
13 | inherit eutils toolchain-funcs multilib |
16 | inherit eutils toolchain-funcs multilib |
14 | |
17 | |
15 | ################ DEPRECATED functions ################ |
18 | # Return all the flag variables that our high level funcs operate on. |
16 | # The following are still present to avoid breaking existing |
19 | all-flag-vars() { |
17 | # code more than necessary; however they are deprecated. Please |
20 | echo {C,CPP,CXX,CCAS,F,FC,LD}FLAGS |
18 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
21 | } |
19 | # need to know which hardened techs are active in the compiler. |
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20 | # See bug #100974 |
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21 | # |
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22 | # has_hardened |
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23 | # has_pie |
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24 | # has_pic |
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25 | # has_ssp_all |
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26 | # has_ssp |
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27 | |
22 | |
28 | |
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29 | # {C,CXX,F,FC}FLAGS that we allow in strip-flags |
23 | # {C,CPP,CXX,CCAS,F,FC,LD}FLAGS that we allow in strip-flags |
30 | # Note: shell globs and character lists are allowed |
24 | # Note: shell globs and character lists are allowed |
31 | setup-allowed-flags() { |
25 | setup-allowed-flags() { |
32 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
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33 | export ALLOWED_FLAGS="-pipe" |
26 | ALLOWED_FLAGS="-pipe" |
34 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
27 | ALLOWED_FLAGS+=" -O -O1 -O2 -Os -mcpu -march -mtune" |
35 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
28 | ALLOWED_FLAGS+=" -fstack-protector -fstack-protector-all" |
36 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking" |
29 | ALLOWED_FLAGS+=" -fbounds-checking -fno-strict-overflow" |
37 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" |
30 | ALLOWED_FLAGS+=" -fno-PIE -fno-pie -fno-unit-at-a-time" |
38 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+" |
31 | ALLOWED_FLAGS+=" -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+" |
39 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident" |
32 | ALLOWED_FLAGS+=" -fno-ident -fpermissive" |
40 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w" |
33 | ALLOWED_FLAGS+=" -W* -w" |
41 | fi |
34 | |
42 | # allow a bunch of flags that negate features / control ABI |
35 | # allow a bunch of flags that negate features / control ABI |
43 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \ |
36 | ALLOWED_FLAGS+=" -fno-stack-protector -fno-stack-protector-all \ |
44 | -fno-strict-aliasing -fno-bounds-checking" |
37 | -fno-strict-aliasing -fno-bounds-checking -fstrict-overflow \ |
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38 | -fno-omit-frame-pointer" |
45 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
39 | ALLOWED_FLAGS+=" -mregparm -mno-app-regs -mapp-regs -mno-mmx -mno-sse \ |
46 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ |
40 | -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 -mno-sse4.2 \ |
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41 | -mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow -mno-popcnt \ |
47 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
42 | -mno-abm -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -mplt \ |
48 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
43 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
49 | -mieee -mieee-with-inexact -mschedule \ |
44 | -mieee -mieee-with-inexact -mschedule -mfloat-gprs -mspe -mno-spe \ |
50 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
45 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs -mflat -mno-flat \ |
51 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
46 | -mno-faster-structs -mfaster-structs -m32 -m64 -mx32 -mabi \ |
52 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
47 | -mlittle-endian -mbig-endian -EL -EB -fPIC -mlive-g0 -mcmodel \ |
53 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ |
48 | -mstack-bias -mno-stack-bias -msecure-plt -m*-toc -mfloat-abi=* \ |
54 | -msecure-plt -D*" |
49 | -D* -U*" |
55 | |
50 | |
56 | # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing |
51 | # 4.5 |
57 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
52 | ALLOWED_FLAGS+=" -mno-fma4 -mno-movbe -mno-xop -mno-lwp" |
58 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
53 | # 4.6 |
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54 | ALLOWED_FLAGS+=" -mno-fsgsbase -mno-rdrnd -mno-f16c -mno-bmi -mno-tbm" |
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55 | # 4.7 |
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56 | ALLOWED_FLAGS+=" -mno-avx2 -mno-bmi2 -mno-fma -mno-lzcnt" |
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57 | |
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58 | # CPPFLAGS and LDFLAGS |
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59 | ALLOWED_FLAGS+=" -I* -L* -R* -Wl,*" |
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60 | |
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61 | export ALLOWED_FLAGS |
59 | return 0 |
62 | return 0 |
60 | } |
63 | } |
61 | |
64 | |
62 | # inverted filters for hardened compiler. This is trying to unpick |
65 | # inverted filters for hardened compiler. This is trying to unpick |
63 | # the hardened compiler defaults. |
66 | # the hardened compiler defaults. |
… | |
… | |
71 | -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie) |
74 | -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie) |
72 | gcc-specs-pie || continue |
75 | gcc-specs-pie || continue |
73 | is-flagq -nopie || append-flags -nopie;; |
76 | is-flagq -nopie || append-flags -nopie;; |
74 | -fstack-protector) |
77 | -fstack-protector) |
75 | gcc-specs-ssp || continue |
78 | gcc-specs-ssp || continue |
76 | is-flagq -fno-stack-protector || append-flags -fno-stack-protector;; |
79 | is-flagq -fno-stack-protector || append-flags $(test-flags -fno-stack-protector);; |
77 | -fstack-protector-all) |
80 | -fstack-protector-all) |
78 | gcc-specs-ssp-to-all || continue |
81 | gcc-specs-ssp-to-all || continue |
79 | is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;; |
82 | is-flagq -fno-stack-protector-all || append-flags $(test-flags -fno-stack-protector-all);; |
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83 | -fno-strict-overflow) |
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84 | gcc-specs-nostrict || continue |
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85 | is-flagq -fstrict-overflow || append-flags $(test-flags -fstrict-overflow);; |
80 | esac |
86 | esac |
81 | done |
87 | done |
82 | } |
88 | } |
83 | |
89 | |
84 | # Remove occurrences of strings from variable given in $1 |
90 | # Remove occurrences of strings from variable given in $1 |
85 | # Strings removed are matched as globs, so for example |
91 | # Strings removed are matched as globs, so for example |
86 | # '-O*' would remove -O1, -O2 etc. |
92 | # '-O*' would remove -O1, -O2 etc. |
87 | _filter-var() { |
93 | _filter-var() { |
88 | local f x VAR VAL |
94 | local f x var=$1 new=() |
89 | declare -a new |
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90 | |
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91 | VAR=$1 |
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92 | shift |
95 | shift |
93 | eval VAL=\${${VAR}} |
96 | |
94 | for f in ${VAL}; do |
97 | for f in ${!var} ; do |
95 | for x in "$@"; do |
98 | for x in "$@" ; do |
96 | # Note this should work with globs like -O* |
99 | # Note this should work with globs like -O* |
97 | [[ ${f} == ${x} ]] && continue 2 |
100 | [[ ${f} == ${x} ]] && continue 2 |
98 | done |
101 | done |
99 | eval new\[\${\#new\[@]}]=\${f} |
102 | new+=( "${f}" ) |
100 | done |
103 | done |
101 | eval export ${VAR}=\${new\[*]} |
104 | eval export ${var}=\""${new[*]}"\" |
102 | } |
105 | } |
103 | |
106 | |
104 | # @FUNCTION: filter-flags |
107 | # @FUNCTION: filter-flags |
105 | # @USAGE: <flags> |
108 | # @USAGE: <flags> |
106 | # @DESCRIPTION: |
109 | # @DESCRIPTION: |
107 | # Remove particular <flags> from {C,CPP,CXX,F,FC}FLAGS. Accepts shell globs. |
110 | # Remove particular <flags> from {C,CPP,CXX,CCAS,F,FC,LD}FLAGS. Accepts shell globs. |
108 | filter-flags() { |
111 | filter-flags() { |
109 | _filter-hardened "$@" |
112 | _filter-hardened "$@" |
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113 | local v |
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114 | for v in $(all-flag-vars) ; do |
110 | _filter-var CFLAGS "$@" |
115 | _filter-var ${v} "$@" |
111 | _filter-var CPPFLAGS "$@" |
116 | done |
112 | _filter-var CXXFLAGS "$@" |
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113 | _filter-var FFLAGS "$@" |
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114 | _filter-var FCFLAGS "$@" |
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115 | return 0 |
117 | return 0 |
116 | } |
118 | } |
117 | |
119 | |
118 | # @FUNCTION: filter-lfs-flags |
120 | # @FUNCTION: filter-lfs-flags |
119 | # @DESCRIPTION: |
121 | # @DESCRIPTION: |
120 | # Remove flags that enable Large File Support. |
122 | # Remove flags that enable Large File Support. |
121 | filter-lfs-flags() { |
123 | filter-lfs-flags() { |
122 | [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" |
124 | [[ $# -ne 0 ]] && die "filter-lfs-flags takes no arguments" |
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125 | # http://www.gnu.org/s/libc/manual/html_node/Feature-Test-Macros.html |
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126 | # _LARGEFILE_SOURCE: enable support for new LFS funcs (ftello/etc...) |
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127 | # _LARGEFILE64_SOURCE: enable support for 64bit variants (off64_t/fseeko64/etc...) |
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128 | # _FILE_OFFSET_BITS: default to 64bit variants (off_t is defined as off64_t) |
123 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
129 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
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130 | } |
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131 | |
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132 | # @FUNCTION: filter-ldflags |
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133 | # @USAGE: <flags> |
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134 | # @DESCRIPTION: |
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135 | # Remove particular <flags> from LDFLAGS. Accepts shell globs. |
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136 | filter-ldflags() { |
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137 | _filter-var LDFLAGS "$@" |
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138 | return 0 |
124 | } |
139 | } |
125 | |
140 | |
126 | # @FUNCTION: append-cppflags |
141 | # @FUNCTION: append-cppflags |
127 | # @USAGE: <flags> |
142 | # @USAGE: <flags> |
128 | # @DESCRIPTION: |
143 | # @DESCRIPTION: |
129 | # Add extra <flags> to the current CPPFLAGS. |
144 | # Add extra <flags> to the current CPPFLAGS. |
130 | append-cppflags() { |
145 | append-cppflags() { |
131 | [[ -z $* ]] && return 0 |
146 | [[ $# -eq 0 ]] && return 0 |
132 | export CPPFLAGS="${CPPFLAGS} $*" |
147 | export CPPFLAGS="${CPPFLAGS} $*" |
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148 | return 0 |
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149 | } |
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150 | |
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151 | # @FUNCTION: append-cflags |
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152 | # @USAGE: <flags> |
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153 | # @DESCRIPTION: |
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154 | # Add extra <flags> to the current CFLAGS. |
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155 | append-cflags() { |
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156 | [[ $# -eq 0 ]] && return 0 |
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157 | export CFLAGS=$(test-flags-CC ${CFLAGS} "$@") |
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158 | return 0 |
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159 | } |
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160 | |
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161 | # @FUNCTION: append-cxxflags |
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162 | # @USAGE: <flags> |
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163 | # @DESCRIPTION: |
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164 | # Add extra <flags> to the current CXXFLAGS. |
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165 | append-cxxflags() { |
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166 | [[ $# -eq 0 ]] && return 0 |
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167 | export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS} "$@") |
133 | return 0 |
168 | return 0 |
134 | } |
169 | } |
135 | |
170 | |
136 | # @FUNCTION: append-fflags |
171 | # @FUNCTION: append-fflags |
137 | # @USAGE: <flags> |
172 | # @USAGE: <flags> |
138 | # @DESCRIPTION: |
173 | # @DESCRIPTION: |
139 | # Add extra <flags> to the current {F,FC}FLAGS. |
174 | # Add extra <flags> to the current {F,FC}FLAGS. |
140 | append-fflags() { |
175 | append-fflags() { |
141 | [[ -z $* ]] && return 0 |
176 | [[ $# -eq 0 ]] && return 0 |
142 | export FFLAGS="${FFLAGS} $*" |
177 | export FFLAGS=$(test-flags-F77 ${FFLAGS} "$@") |
143 | export FCFLAGS="${FCFLAGS} $*" |
178 | export FCFLAGS=$(test-flags-FC ${FCFLAGS} "$@") |
144 | return 0 |
179 | return 0 |
145 | } |
180 | } |
146 | |
181 | |
147 | # @FUNCTION: append-lfs-flags |
182 | # @FUNCTION: append-lfs-flags |
148 | # @DESCRIPTION: |
183 | # @DESCRIPTION: |
149 | # Add flags that enable Large File Support. |
184 | # Add flags that enable Large File Support. |
150 | append-lfs-flags() { |
185 | append-lfs-flags() { |
151 | [[ -n $@ ]] && die "append-lfs-flags takes no arguments" |
186 | [[ $# -ne 0 ]] && die "append-lfs-flags takes no arguments" |
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187 | # 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 |
188 | append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
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189 | } |
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190 | |
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191 | # @FUNCTION: append-ldflags |
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192 | # @USAGE: <flags> |
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193 | # @DESCRIPTION: |
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194 | # Add extra <flags> to the current LDFLAGS. |
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195 | append-ldflags() { |
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196 | [[ $# -eq 0 ]] && return 0 |
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197 | local flag |
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198 | for flag in "$@"; do |
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199 | [[ ${flag} == -l* ]] && \ |
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200 | eqawarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS" |
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201 | done |
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202 | |
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203 | export LDFLAGS="${LDFLAGS} $*" |
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204 | return 0 |
153 | } |
205 | } |
154 | |
206 | |
155 | # @FUNCTION: append-flags |
207 | # @FUNCTION: append-flags |
156 | # @USAGE: <flags> |
208 | # @USAGE: <flags> |
157 | # @DESCRIPTION: |
209 | # @DESCRIPTION: |
158 | # Add extra <flags> to your current {C,CXX,F,FC}FLAGS. |
210 | # Add extra <flags> to your current {C,CXX,F,FC}FLAGS. |
159 | append-flags() { |
211 | append-flags() { |
160 | [[ -z $* ]] && return 0 |
212 | [[ $# -eq 0 ]] && return 0 |
161 | export CFLAGS="${CFLAGS} $*" |
213 | case " $* " in |
162 | export CXXFLAGS="${CXXFLAGS} $*" |
214 | *' '-[DIU]*) eqawarn 'please use append-cppflags for preprocessor flags' ;; |
163 | export FFLAGS="${FFLAGS} $*" |
215 | *' '-L*|\ |
164 | export FCFLAGS="${FCFLAGS} $*" |
216 | *' '-Wl,*) eqawarn 'please use append-ldflags for linker flags' ;; |
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217 | esac |
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218 | append-cflags "$@" |
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219 | append-cxxflags "$@" |
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220 | append-fflags "$@" |
165 | return 0 |
221 | return 0 |
166 | } |
222 | } |
167 | |
223 | |
168 | # @FUNCTION: replace-flags |
224 | # @FUNCTION: replace-flags |
169 | # @USAGE: <old> <new> |
225 | # @USAGE: <old> <new> |
170 | # @DESCRIPTION: |
226 | # @DESCRIPTION: |
171 | # Replace the <old> flag with <new>. Accepts shell globs for <old>. |
227 | # Replace the <old> flag with <new>. Accepts shell globs for <old>. |
172 | replace-flags() { |
228 | replace-flags() { |
173 | [[ $# != 2 ]] \ |
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174 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
229 | [[ $# != 2 ]] && die "Usage: replace-flags <old flag> <new flag>" |
175 | && die "replace-flags takes 2 arguments, not $#" |
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176 | |
230 | |
177 | local f fset |
231 | local f var new |
178 | declare -a new_CFLAGS new_CXXFLAGS |
232 | for var in $(all-flag-vars) ; do |
179 | |
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180 | for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do |
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181 | # Looping over the flags instead of using a global |
233 | # Looping over the flags instead of using a global |
182 | # substitution ensures that we're working with flag atoms. |
234 | # substitution ensures that we're working with flag atoms. |
183 | # Otherwise globs like -O* have the potential to wipe out the |
235 | # Otherwise globs like -O* have the potential to wipe out the |
184 | # list of flags. |
236 | # list of flags. |
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237 | new=() |
185 | for f in ${!fset}; do |
238 | for f in ${!var} ; do |
186 | # Note this should work with globs like -O* |
239 | # Note this should work with globs like -O* |
187 | [[ ${f} == ${1} ]] && f=${2} |
240 | [[ ${f} == ${1} ]] && f=${2} |
188 | eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f} |
241 | new+=( "${f}" ) |
189 | done |
242 | done |
190 | eval export ${fset}=\${new_${fset}\[*]} |
243 | eval export ${var}=\""${new[*]}"\" |
191 | done |
244 | done |
192 | |
245 | |
193 | return 0 |
246 | return 0 |
194 | } |
247 | } |
195 | |
248 | |
… | |
… | |
210 | done |
263 | done |
211 | return 0 |
264 | return 0 |
212 | } |
265 | } |
213 | |
266 | |
214 | _is_flagq() { |
267 | _is_flagq() { |
215 | local x |
268 | local x var |
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269 | eval var=\""\${$1[*]}"\" |
216 | for x in ${!1} ; do |
270 | for x in ${var} ; do |
217 | [[ ${x} == $2 ]] && return 0 |
271 | [[ ${x} == $2 ]] && return 0 |
218 | done |
272 | done |
219 | return 1 |
273 | return 1 |
220 | } |
274 | } |
221 | |
275 | |
… | |
… | |
223 | # @USAGE: <flag> |
277 | # @USAGE: <flag> |
224 | # @DESCRIPTION: |
278 | # @DESCRIPTION: |
225 | # Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs. |
279 | # Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs. |
226 | is-flagq() { |
280 | is-flagq() { |
227 | [[ -n $2 ]] && die "Usage: is-flag <flag>" |
281 | [[ -n $2 ]] && die "Usage: is-flag <flag>" |
228 | _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1 |
282 | |
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283 | local var |
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284 | for var in $(all-flag-vars) ; do |
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285 | _is_flagq ${var} "$1" && return 0 |
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286 | done |
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287 | return 1 |
229 | } |
288 | } |
230 | |
289 | |
231 | # @FUNCTION: is-flag |
290 | # @FUNCTION: is-flag |
232 | # @USAGE: <flag> |
291 | # @USAGE: <flag> |
233 | # @DESCRIPTION: |
292 | # @DESCRIPTION: |
… | |
… | |
287 | return 0 |
346 | return 0 |
288 | } |
347 | } |
289 | |
348 | |
290 | # @FUNCTION: strip-flags |
349 | # @FUNCTION: strip-flags |
291 | # @DESCRIPTION: |
350 | # @DESCRIPTION: |
292 | # Strip C[XX]FLAGS of everything except known good/safe flags. |
351 | # Strip *FLAGS of everything except known good/safe flags. This runs over all |
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352 | # flags returned by all_flag_vars(). |
293 | strip-flags() { |
353 | strip-flags() { |
294 | local x y flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS |
354 | local x y var |
295 | |
355 | |
296 | setup-allowed-flags |
356 | setup-allowed-flags |
297 | |
357 | |
298 | local NEW_CFLAGS="" |
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299 | local NEW_CXXFLAGS="" |
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300 | local NEW_FFLAGS="" |
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301 | local NEW_FCFLAGS="" |
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302 | |
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303 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
|
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304 | if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then |
|
|
305 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
|
|
306 | fi |
|
|
307 | |
|
|
308 | set -f # disable pathname expansion |
358 | set -f # disable pathname expansion |
309 | |
359 | |
310 | for x in ${CFLAGS}; do |
360 | for var in $(all-flag-vars) ; do |
|
|
361 | local new=() |
|
|
362 | |
|
|
363 | for x in ${!var} ; do |
|
|
364 | local flag=${x%%=*} |
311 | for y in ${ALLOWED_FLAGS}; do |
365 | for y in ${ALLOWED_FLAGS} ; do |
312 | flag=${x%%=*} |
|
|
313 | if [ "${flag%%${y}}" = "" ] ; then |
366 | if [[ -z ${flag%%${y}} ]] ; then |
314 | NEW_CFLAGS="${NEW_CFLAGS} ${x}" |
367 | new+=( "${x}" ) |
315 | break |
368 | break |
316 | fi |
369 | fi |
317 | done |
370 | done |
318 | done |
371 | done |
319 | |
372 | |
320 | for x in ${CXXFLAGS}; do |
|
|
321 | for y in ${ALLOWED_FLAGS}; do |
|
|
322 | flag=${x%%=*} |
|
|
323 | if [ "${flag%%${y}}" = "" ] ; then |
|
|
324 | NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" |
|
|
325 | break |
|
|
326 | fi |
|
|
327 | done |
|
|
328 | done |
|
|
329 | |
|
|
330 | for x in ${FFLAGS}; do |
|
|
331 | for y in ${ALLOWED_FLAGS}; do |
|
|
332 | flag=${x%%=*} |
|
|
333 | if [ "${flag%%${y}}" = "" ] ; then |
|
|
334 | NEW_FFLAGS="${NEW_FFLAGS} ${x}" |
|
|
335 | break |
|
|
336 | fi |
|
|
337 | done |
|
|
338 | done |
|
|
339 | |
|
|
340 | for x in ${FCFLAGS}; do |
|
|
341 | for y in ${ALLOWED_FLAGS}; do |
|
|
342 | flag=${x%%=*} |
|
|
343 | if [ "${flag%%${y}}" = "" ] ; then |
|
|
344 | NEW_FCFLAGS="${NEW_FCFLAGS} ${x}" |
|
|
345 | break |
|
|
346 | fi |
|
|
347 | done |
|
|
348 | done |
|
|
349 | |
|
|
350 | # In case we filtered out all optimization flags fallback to -O2 |
373 | # In case we filtered out all optimization flags fallback to -O2 |
351 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
374 | if _is_flagq ${var} "-O*" && ! _is_flagq new "-O*" ; then |
352 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
375 | new+=( -O2 ) |
353 | fi |
376 | fi |
354 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
377 | |
355 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
378 | eval export ${var}=\""${new[*]}"\" |
356 | fi |
379 | done |
357 | if [ "${FFLAGS/-O}" != "${FFLAGS}" -a "${NEW_FFLAGS/-O}" = "${NEW_FFLAGS}" ]; then |
|
|
358 | NEW_FFLAGS="${NEW_FFLAGS} -O2" |
|
|
359 | fi |
|
|
360 | if [ "${FCFLAGS/-O}" != "${FCFLAGS}" -a "${NEW_FCFLAGS/-O}" = "${NEW_FCFLAGS}" ]; then |
|
|
361 | NEW_FCFLAGS="${NEW_FCFLAGS} -O2" |
|
|
362 | fi |
|
|
363 | |
380 | |
364 | set +f # re-enable pathname expansion |
381 | set +f # re-enable pathname expansion |
365 | |
382 | |
366 | export CFLAGS="${NEW_CFLAGS}" |
|
|
367 | export CXXFLAGS="${NEW_CXXFLAGS}" |
|
|
368 | export FFLAGS="${NEW_FFLAGS}" |
|
|
369 | export FCFLAGS="${NEW_FCFLAGS}" |
|
|
370 | return 0 |
383 | return 0 |
371 | } |
384 | } |
372 | |
385 | |
373 | test-flag-PROG() { |
386 | test-flag-PROG() { |
374 | local comp=$1 |
387 | local comp=$1 |
375 | local flags="$2" |
388 | local flag=$2 |
376 | |
389 | |
377 | [[ -z ${comp} || -z ${flags} ]] && \ |
390 | [[ -z ${comp} || -z ${flag} ]] && return 1 |
378 | return 1 |
|
|
379 | |
391 | |
|
|
392 | # use -c so we can test the assembler as well |
380 | local PROG=$(tc-get${comp}) |
393 | local PROG=$(tc-get${comp}) |
381 | ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ |
394 | ${PROG} "${flag}" -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 "${flags}" |
… | |
… | |
454 | # @USAGE: <flags> |
466 | # @USAGE: <flags> |
455 | # @DESCRIPTION: |
467 | # @DESCRIPTION: |
456 | # Short-hand that should hopefully work for both C and C++ compiler, but |
468 | # Short-hand that should hopefully work for both C and C++ compiler, but |
457 | # its really only present due to the append-flags() abomination. |
469 | # its really only present due to the append-flags() abomination. |
458 | test-flags() { test-flags-CC "$@"; } |
470 | test-flags() { test-flags-CC "$@"; } |
459 | |
|
|
460 | # @FUNCTION: test_flag |
|
|
461 | # @DESCRIPTION: |
|
|
462 | # DEPRICIATED, use test-flags() |
|
|
463 | test_flag() { |
|
|
464 | ewarn "test_flag: deprecated, please use test-flags()!" >&2 |
|
|
465 | |
|
|
466 | test-flags-CC "$@" |
|
|
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. |
… | |
… | |
492 | # @FUNCTION: get-flag |
495 | # @FUNCTION: get-flag |
493 | # @USAGE: <flag> |
496 | # @USAGE: <flag> |
494 | # @DESCRIPTION: |
497 | # @DESCRIPTION: |
495 | # Find and echo the value for a particular flag. Accepts shell globs. |
498 | # Find and echo the value for a particular flag. Accepts shell globs. |
496 | get-flag() { |
499 | get-flag() { |
497 | local f findflag="$1" |
500 | local f var findflag="$1" |
498 | |
501 | |
499 | # this code looks a little flaky but seems to work for |
502 | # this code looks a little flaky but seems to work for |
500 | # everything we want ... |
503 | # everything we want ... |
501 | # for example, if CFLAGS="-march=i686": |
504 | # for example, if CFLAGS="-march=i686": |
502 | # `get-flag -march` == "-march=i686" |
505 | # `get-flag -march` == "-march=i686" |
503 | # `get-flag march` == "i686" |
506 | # `get-flag march` == "i686" |
504 | for f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do |
507 | for var in $(all-flag-vars) ; do |
|
|
508 | for f in ${!var} ; do |
505 | if [ "${f/${findflag}}" != "${f}" ] ; then |
509 | if [ "${f/${findflag}}" != "${f}" ] ; then |
506 | printf "%s\n" "${f/-${findflag}=}" |
510 | printf "%s\n" "${f/-${findflag}=}" |
507 | return 0 |
511 | return 0 |
508 | fi |
512 | fi |
|
|
513 | done |
509 | done |
514 | done |
510 | return 1 |
515 | return 1 |
511 | } |
|
|
512 | |
|
|
513 | # @FUNCTION: has_hardened |
|
|
514 | # @DESCRIPTION: |
|
|
515 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
|
|
516 | has_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 |
|
|
528 | has_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 |
|
|
540 | has_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 |
|
|
552 | has_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 |
|
|
565 | has_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) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ |
|
|
571 | gcc-specs-ssp |
|
|
572 | } |
516 | } |
573 | |
517 | |
574 | # @FUNCTION: has_m64 |
518 | # @FUNCTION: has_m64 |
575 | # @DESCRIPTION: |
519 | # @DESCRIPTION: |
576 | # This doesn't test if the flag is accepted, it tests if the flag actually |
520 | # This doesn't test if the flag is accepted, it tests if the flag actually |
577 | # WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works |
521 | # WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works |
578 | # return code is 0, else the return code is 1. |
522 | # return code is 0, else the return code is 1. |
579 | has_m64() { |
523 | has_m64() { |
|
|
524 | eqawarn "${FUNCNAME}: don't use this anymore" |
|
|
525 | |
580 | # this doesnt test if the flag is accepted, it tests if the flag |
526 | # 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! |
527 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
582 | # please dont replace this function with test_flag in some future |
528 | # please dont replace this function with test_flag in some future |
583 | # clean-up! |
529 | # clean-up! |
584 | |
530 | |
… | |
… | |
590 | rm -f "${temp}".c |
536 | rm -f "${temp}".c |
591 | [[ ${ret} != 1 ]] && return 0 |
537 | [[ ${ret} != 1 ]] && return 0 |
592 | return 1 |
538 | return 1 |
593 | } |
539 | } |
594 | |
540 | |
595 | # @FUNCTION: has_m32 |
|
|
596 | # @DESCRIPTION: |
|
|
597 | # This doesn't test if the flag is accepted, it tests if the flag actually |
|
|
598 | # WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return |
|
|
599 | # code is 0, else return code is 1. |
|
|
600 | has_m32() { |
541 | has_m32() { |
601 | # this doesnt test if the flag is accepted, it tests if the flag |
542 | die "${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 | } |
543 | } |
617 | |
544 | |
618 | # @FUNCTION: replace-sparc64-flags |
545 | # @FUNCTION: replace-sparc64-flags |
619 | # @DESCRIPTION: |
546 | # @DESCRIPTION: |
620 | # Sets mcpu to v8 and uses the original value as mtune if none specified. |
547 | # Sets mcpu to v8 and uses the original value as mtune if none specified. |
… | |
… | |
642 | fi |
569 | fi |
643 | |
570 | |
644 | export CFLAGS CXXFLAGS |
571 | export CFLAGS CXXFLAGS |
645 | } |
572 | } |
646 | |
573 | |
647 | # @FUNCTION: append-ldflags |
574 | # @FUNCTION: append-libs |
648 | # @USAGE: <flags> |
575 | # @USAGE: <libs> |
649 | # @DESCRIPTION: |
576 | # @DESCRIPTION: |
650 | # Add extra <flags> to the current LDFLAGS. |
577 | # Add extra <libs> to the current LIBS. |
651 | append-ldflags() { |
578 | append-libs() { |
652 | [[ -z $* ]] && return 0 |
579 | [[ $# -eq 0 ]] && return 0 |
653 | local flag |
580 | local flag |
654 | for flag in "$@"; do |
581 | for flag in "$@"; do |
655 | [[ ${flag} == -l* ]] && \ |
582 | [[ ${flag} == -l* ]] && flag=${flag#-l} |
656 | ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS" |
583 | export LIBS="${LIBS} -l${flag}" |
657 | done |
584 | done |
658 | |
585 | |
659 | export LDFLAGS="${LDFLAGS} $*" |
|
|
660 | return 0 |
|
|
661 | } |
|
|
662 | |
|
|
663 | # @FUNCTION: filter-ldflags |
|
|
664 | # @USAGE: <flags> |
|
|
665 | # @DESCRIPTION: |
|
|
666 | # Remove particular <flags> from LDFLAGS. Accepts shell globs. |
|
|
667 | filter-ldflags() { |
|
|
668 | _filter-var LDFLAGS "$@" |
|
|
669 | return 0 |
586 | return 0 |
670 | } |
587 | } |
671 | |
588 | |
672 | # @FUNCTION: raw-ldflags |
589 | # @FUNCTION: raw-ldflags |
673 | # @USAGE: <flags> |
590 | # @USAGE: [flags] |
674 | # @DESCRIPTION: |
591 | # @DESCRIPTION: |
675 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
592 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
676 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
593 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
677 | # to gcc where it needs the '-Wl,'. |
594 | # to gcc where it needs the '-Wl,'. |
|
|
595 | # |
|
|
596 | # If no flags are specified, then default to ${LDFLAGS}. |
678 | raw-ldflags() { |
597 | raw-ldflags() { |
679 | local x input="$@" |
598 | local x input="$@" |
680 | [[ -z ${input} ]] && input=${LDFLAGS} |
599 | [[ -z ${input} ]] && input=${LDFLAGS} |
681 | set -- |
600 | set -- |
682 | for x in ${input} ; do |
601 | for x in ${input} ; do |
… | |
… | |
684 | set -- "$@" ${x//,/ } |
603 | set -- "$@" ${x//,/ } |
685 | done |
604 | done |
686 | echo "$@" |
605 | echo "$@" |
687 | } |
606 | } |
688 | |
607 | |
689 | # @FUNCTION: bindnow-flags |
608 | # @FUNCTION: no-as-needed |
690 | # @RETURN: Returns the flags to enable "now" binding in the current selected linker. |
609 | # @RETURN: Flag to disable asneeded behavior for use with append-ldflags. |
691 | # @DESCRIPTION: |
610 | no-as-needed() { |
692 | # DEPRECATED - Gets the flags needed for "NOW" binding |
|
|
693 | bindnow-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 |
611 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
697 | *GNU* | *'with BFD'*) # GNU ld |
612 | *GNU*) # GNU ld |
698 | echo "-Wl,-z,now" ;; |
613 | 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 |
614 | esac |
709 | } |
615 | } |
710 | |
616 | |
711 | |
617 | fi |
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 |
|
|