| 1 | # Copyright 1999-2004 Gentoo Foundation |
1 | # Copyright 1999-2007 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 1.62 2004/07/15 04:59:44 lv Exp $ |
3 | # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.116 2007/03/04 21:03:59 vapier Exp $ |
| 4 | # |
4 | # |
| 5 | # Author Bart Verwilst <verwilst@gentoo.org> |
5 | # Maintainer: toolchain@gentoo.org |
| 6 | |
6 | |
| 7 | ECLASS=flag-o-matic |
7 | # need access to emktemp() |
| 8 | INHERITED="$INHERITED $ECLASS" |
8 | inherit eutils toolchain-funcs multilib |
| 9 | IUSE="$IUSE debug" |
|
|
| 10 | |
9 | |
| 11 | # |
10 | # |
| 12 | #### filter-flags <flags> #### |
11 | #### filter-flags <flags> #### |
| 13 | # Remove particular flags from C[XX]FLAGS |
12 | # Remove particular flags from C[XX]FLAGS |
| 14 | # Matches only complete flags |
13 | # Matches only complete flags |
| … | |
… | |
| 17 | # Add extra flags to your current C[XX]FLAGS |
16 | # Add extra flags to your current C[XX]FLAGS |
| 18 | # |
17 | # |
| 19 | #### replace-flags <orig.flag> <new.flag> ### |
18 | #### replace-flags <orig.flag> <new.flag> ### |
| 20 | # Replace a flag by another one |
19 | # Replace a flag by another one |
| 21 | # |
20 | # |
| 22 | #### replace-cpu-flags <new.cpu> <old.cpus> ### |
21 | #### replace-cpu-flags <old.cpus> <new.cpu> ### |
| 23 | # Replace march/mcpu flags that specify <old.cpus> |
22 | # Replace march/mcpu flags that specify <old.cpus> |
| 24 | # with flags that specify <new.cpu> |
23 | # with flags that specify <new.cpu> |
| 25 | # |
24 | # |
| 26 | #### is-flag <flag> #### |
25 | #### is-flag[q] <flag> #### |
| 27 | # Returns "true" if flag is set in C[XX]FLAGS |
26 | # Returns "true" if flag is set in C[XX]FLAGS |
| 28 | # Matches only complete a flag |
27 | # Matches only complete a flag |
|
|
28 | # q version sets return code but doesn't echo |
|
|
29 | # |
|
|
30 | #### is-ldflag[q] <flag> #### |
|
|
31 | # Returns "true" if flag is set in LDFLAGS |
|
|
32 | # Matches only complete a flag |
|
|
33 | # q version sets return code but doesn't echo |
| 29 | # |
34 | # |
| 30 | #### strip-flags #### |
35 | #### strip-flags #### |
| 31 | # Strip C[XX]FLAGS of everything except known |
36 | # Strip C[XX]FLAGS of everything except known |
| 32 | # good options. |
37 | # good options. |
| 33 | # |
38 | # |
| … | |
… | |
| 52 | # |
57 | # |
| 53 | #### filter-ldflags <flags> #### |
58 | #### filter-ldflags <flags> #### |
| 54 | # Remove particular flags from LDFLAGS |
59 | # Remove particular flags from LDFLAGS |
| 55 | # Matches only complete flags |
60 | # Matches only complete flags |
| 56 | # |
61 | # |
| 57 | #### etexec-flags #### |
62 | #### bindnow-flags #### |
| 58 | # hooked function for hardened gcc that appends |
63 | # Returns the flags to enable "now" binding in the current selected linker. |
| 59 | # -fno-pic to {C,CXX,LD}FLAGS |
|
|
| 60 | # when a package is filtering -fpic, -fPIC, -fpie, -fPIE |
|
|
| 61 | # |
64 | # |
| 62 | #### fstack-flags #### |
65 | ################ DEPRECATED functions ################ |
| 63 | # hooked function for hardened gcc that appends |
66 | # The following are still present to avoid breaking existing |
| 64 | # -fno-stack-protector to {C,CXX,LD}FLAGS |
67 | # code more than necessary; however they are deprecated. Please |
| 65 | # when a package is filtering -fstack-protector, -fstack-protector-all |
68 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
| 66 | # notice: modern automatic specs files will also suppress -fstack-protector-all |
69 | # need to know which hardened techs are active in the compiler. |
| 67 | # when only -fno-stack-protector is given |
70 | # See bug #100974 |
|
|
71 | # |
|
|
72 | #### has_hardened #### |
|
|
73 | # Returns true if the compiler has 'Hardened' in its version string, |
|
|
74 | # (note; switched-spec vanilla compilers satisfy this condition) or |
|
|
75 | # the specs file name contains 'hardened'. |
|
|
76 | # |
|
|
77 | #### has_pie #### |
|
|
78 | # Returns true if the compiler by default or with current CFLAGS |
|
|
79 | # builds position-independent code. |
|
|
80 | # |
|
|
81 | #### has_pic #### |
|
|
82 | # Returns true if the compiler by default or with current CFLAGS |
|
|
83 | # builds position-independent code. |
|
|
84 | # |
|
|
85 | #### has_ssp_all #### |
|
|
86 | # Returns true if the compiler by default or with current CFLAGS |
|
|
87 | # generates stack smash protections for all functions |
|
|
88 | # |
|
|
89 | #### has_ssp #### |
|
|
90 | # Returns true if the compiler by default or with current CFLAGS |
|
|
91 | # generates stack smash protections for most vulnerable functions |
| 68 | # |
92 | # |
| 69 | |
93 | |
| 70 | # C[XX]FLAGS that we allow in strip-flags |
94 | # C[XX]FLAGS that we allow in strip-flags |
| 71 | setup-allowed-flags() { |
95 | setup-allowed-flags() { |
| 72 | if [ -z "${ALLOWED_FLAGS}" ] ; then |
96 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
| 73 | export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -fno-unit-at-a-time -pipe -g" |
97 | export ALLOWED_FLAGS="-pipe" |
| 74 | case "${ARCH}" in |
98 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
| 75 | mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; |
99 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
| 76 | amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;; |
100 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking" |
| 77 | x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;; |
101 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" |
| 78 | alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
102 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" |
| 79 | ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
103 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident" |
| 80 | esac |
|
|
| 81 | fi |
104 | fi |
|
|
105 | # allow a bunch of flags that negate features / control ABI |
|
|
106 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" |
|
|
107 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
|
|
108 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ |
|
|
109 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
|
|
110 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
|
|
111 | -mieee -mieee-with-inexact -mschedule \ |
|
|
112 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
|
|
113 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
|
|
114 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
|
|
115 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ |
|
|
116 | -msecure-plt -D*" |
| 82 | |
117 | |
| 83 | # C[XX]FLAGS that we are think is ok, but needs testing |
118 | # C[XX]FLAGS that we are think is ok, but needs testing |
| 84 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
119 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
| 85 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" |
120 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
| 86 | return 0 |
121 | return 0 |
|
|
122 | } |
|
|
123 | |
|
|
124 | # inverted filters for hardened compiler. This is trying to unpick |
|
|
125 | # the hardened compiler defaults. |
|
|
126 | _filter-hardened() { |
|
|
127 | local f |
|
|
128 | for f in "$@" ; do |
|
|
129 | case "${f}" in |
|
|
130 | # Ideally we should only concern ourselves with PIE flags, |
|
|
131 | # not -fPIC or -fpic, but too many places filter -fPIC without |
|
|
132 | # thinking about -fPIE. |
|
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133 | -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie) |
|
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134 | gcc-specs-pie || continue |
|
|
135 | is-flagq -nopie || append-flags -nopie;; |
|
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136 | -fstack-protector) |
|
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137 | gcc-specs-ssp || continue |
|
|
138 | is-flagq -fno-stack-protector || append-flags -fno-stack-protector;; |
|
|
139 | -fstack-protector-all) |
|
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140 | gcc-specs-ssp-to-all || continue |
|
|
141 | is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;; |
|
|
142 | esac |
|
|
143 | done |
|
|
144 | } |
|
|
145 | |
|
|
146 | # Remove occurrences of strings from variable given in $1 |
|
|
147 | # Strings removed are matched as globs, so for example |
|
|
148 | # '-O*' would remove -O1, -O2 etc. |
|
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149 | _filter-var() { |
|
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150 | local f x VAR VAL |
|
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151 | declare -a new |
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152 | |
|
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153 | VAR=$1 |
|
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154 | shift |
|
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155 | eval VAL=\${${VAR}} |
|
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156 | for f in ${VAL}; do |
|
|
157 | for x in "$@"; do |
|
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158 | # Note this should work with globs like -O* |
|
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159 | [[ ${f} == ${x} ]] && continue 2 |
|
|
160 | done |
|
|
161 | eval new\[\${\#new\[@]}]=\${f} |
|
|
162 | done |
|
|
163 | eval export ${VAR}=\${new\[*]} |
| 87 | } |
164 | } |
| 88 | |
165 | |
| 89 | filter-flags() { |
166 | filter-flags() { |
| 90 | local x f fset |
167 | _filter-hardened "$@" |
| 91 | declare -a new_CFLAGS new_CXXFLAGS |
168 | _filter-var CFLAGS "$@" |
| 92 | |
169 | _filter-var CXXFLAGS "$@" |
| 93 | for x in "$@" ; do |
|
|
| 94 | case "${x}" in |
|
|
| 95 | -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; |
|
|
| 96 | -fstack-protector|-fstack-protector-all) fstack-flags;; |
|
|
| 97 | esac |
|
|
| 98 | done |
|
|
| 99 | |
|
|
| 100 | for fset in CFLAGS CXXFLAGS; do |
|
|
| 101 | for f in ${!fset}; do |
|
|
| 102 | for x in "$@"; do |
|
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| 103 | # Note this should work with globs like -O* |
|
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| 104 | [[ ${f} == ${x} ]] && continue 2 |
|
|
| 105 | done |
|
|
| 106 | eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f} |
|
|
| 107 | done |
|
|
| 108 | eval export ${fset}=\${new_${fset}\[*]} |
|
|
| 109 | done |
|
|
| 110 | |
|
|
| 111 | return 0 |
170 | return 0 |
| 112 | } |
171 | } |
| 113 | |
172 | |
| 114 | filter-lfs-flags() { |
173 | filter-lfs-flags() { |
|
|
174 | [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" |
| 115 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
175 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
| 116 | } |
176 | } |
| 117 | |
177 | |
| 118 | append-lfs-flags() { |
178 | append-lfs-flags() { |
|
|
179 | [[ -n $@ ]] && die "append-lfs-flags takes no arguments" |
| 119 | append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
180 | append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
| 120 | } |
181 | } |
| 121 | |
182 | |
| 122 | append-flags() { |
183 | append-flags() { |
|
|
184 | [[ -z $* ]] && return 0 |
| 123 | export CFLAGS="${CFLAGS} $*" |
185 | export CFLAGS="${CFLAGS} $*" |
| 124 | export CXXFLAGS="${CXXFLAGS} $*" |
186 | export CXXFLAGS="${CXXFLAGS} $*" |
| 125 | [ -n "`is-flag -fno-stack-protector`" -o \ |
|
|
| 126 | -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags |
|
|
| 127 | return 0 |
187 | return 0 |
| 128 | } |
188 | } |
| 129 | |
189 | |
| 130 | replace-flags() { |
190 | replace-flags() { |
| 131 | # we do this fancy spacing stuff so as to not filter |
191 | [[ $# != 2 ]] \ |
| 132 | # out part of a flag ... we want flag atoms ! :D |
192 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
| 133 | CFLAGS=" ${CFLAGS} " |
193 | && die "replace-flags takes 2 arguments, not $#" |
| 134 | CXXFLAGS=" ${CXXFLAGS} " |
194 | |
| 135 | CFLAGS="${CFLAGS// ${1} / ${2} }" |
195 | local f fset |
| 136 | CXXFLAGS="${CXXFLAGS// ${1} / ${2} }" |
196 | declare -a new_CFLAGS new_CXXFLAGS |
| 137 | CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" |
197 | |
| 138 | CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" |
198 | for fset in CFLAGS CXXFLAGS; do |
| 139 | export CFLAGS CXXFLAGS |
199 | # Looping over the flags instead of using a global |
|
|
200 | # substitution ensures that we're working with flag atoms. |
|
|
201 | # Otherwise globs like -O* have the potential to wipe out the |
|
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202 | # list of flags. |
|
|
203 | for f in ${!fset}; do |
|
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204 | # Note this should work with globs like -O* |
|
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205 | [[ ${f} == ${1} ]] && f=${2} |
|
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206 | eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f} |
|
|
207 | done |
|
|
208 | eval export ${fset}=\${new_${fset}\[*]} |
|
|
209 | done |
|
|
210 | |
| 140 | return 0 |
211 | return 0 |
| 141 | } |
212 | } |
| 142 | |
213 | |
| 143 | replace-cpu-flags() { |
214 | replace-cpu-flags() { |
| 144 | local oldcpu newcpu="$1" ; shift |
215 | local newcpu="$#" ; newcpu="${!newcpu}" |
| 145 | for oldcpu in "$@" ; do |
216 | while [ $# -gt 1 ] ; do |
|
|
217 | # quote to make sure that no globbing is done (particularly on |
|
|
218 | # ${oldcpu}) prior to calling replace-flags |
| 146 | replace-flags -march=${oldcpu} -march=${newcpu} |
219 | replace-flags "-march=${1}" "-march=${newcpu}" |
| 147 | replace-flags -mcpu=${oldcpu} -mcpu=${newcpu} |
220 | replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" |
| 148 | replace-flags -mtune=${oldcpu} -mtune=${newcpu} |
221 | replace-flags "-mtune=${1}" "-mtune=${newcpu}" |
|
|
222 | shift |
| 149 | done |
223 | done |
|
|
224 | return 0 |
|
|
225 | } |
|
|
226 | |
|
|
227 | _is_flagq() { |
|
|
228 | local x |
|
|
229 | for x in ${!1} ; do |
|
|
230 | [[ ${x} == $2 ]] && return 0 |
|
|
231 | done |
| 150 | return 0 |
232 | return 1 |
|
|
233 | } |
|
|
234 | |
|
|
235 | is-flagq() { |
|
|
236 | [[ -n $2 ]] && die "Usage: is-flag <flag>" |
|
|
237 | _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 |
| 151 | } |
238 | } |
| 152 | |
239 | |
| 153 | is-flag() { |
240 | is-flag() { |
| 154 | local x |
241 | is-flagq "$@" && echo true |
|
|
242 | } |
| 155 | |
243 | |
| 156 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
244 | is-ldflagq() { |
| 157 | if [ "${x}" == "$1" ] ; then |
245 | [[ -n $2 ]] && die "Usage: is-ldflag <flag>" |
| 158 | echo true |
246 | _is_flagq LDFLAGS $1 |
| 159 | return 0 |
247 | } |
| 160 | fi |
248 | |
| 161 | done |
249 | is-ldflag() { |
| 162 | return 1 |
250 | is-ldflagq "$@" && echo true |
| 163 | } |
251 | } |
| 164 | |
252 | |
| 165 | filter-mfpmath() { |
253 | filter-mfpmath() { |
| 166 | local orig_mfpmath new_math prune_math |
254 | local orig_mfpmath new_math prune_math |
| 167 | |
255 | |
| 168 | # save the original -mfpmath flag |
256 | # save the original -mfpmath flag |
| 169 | orig_mfpmath="`get-flag -mfpmath`" |
257 | orig_mfpmath=$(get-flag -mfpmath) |
| 170 | # get the value of the current -mfpmath flag |
258 | # get the value of the current -mfpmath flag |
| 171 | new_math=" `get-flag mfpmath | tr , ' '` " |
259 | new_math=$(get-flag mfpmath) |
|
|
260 | new_math=" ${new_math//,/ } " |
| 172 | # figure out which math values are to be removed |
261 | # figure out which math values are to be removed |
| 173 | prune_math="" |
262 | prune_math="" |
| 174 | for prune_math in "$@" ; do |
263 | for prune_math in "$@" ; do |
| 175 | new_math="${new_math/ ${prune_math} / }" |
264 | new_math=${new_math/ ${prune_math} / } |
| 176 | done |
265 | done |
| 177 | new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" |
266 | new_math=$(echo ${new_math}) |
|
|
267 | new_math=${new_math// /,} |
| 178 | |
268 | |
| 179 | if [ -z "${new_math}" ] ; then |
269 | if [[ -z ${new_math} ]] ; then |
| 180 | # if we're removing all user specified math values are |
270 | # if we're removing all user specified math values are |
| 181 | # slated for removal, then we just filter the flag |
271 | # slated for removal, then we just filter the flag |
| 182 | filter-flags ${orig_mfpmath} |
272 | filter-flags ${orig_mfpmath} |
| 183 | else |
273 | else |
| 184 | # if we only want to filter some of the user specified |
274 | # if we only want to filter some of the user specified |
| … | |
… | |
| 195 | |
285 | |
| 196 | local NEW_CFLAGS="" |
286 | local NEW_CFLAGS="" |
| 197 | local NEW_CXXFLAGS="" |
287 | local NEW_CXXFLAGS="" |
| 198 | |
288 | |
| 199 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
289 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
| 200 | if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then |
290 | if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then |
| 201 | use debug && einfo "Enabling the use of some unstable flags" |
|
|
| 202 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
291 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
| 203 | fi |
292 | fi |
| 204 | |
293 | |
| 205 | set -f # disable pathname expansion |
294 | set -f # disable pathname expansion |
| 206 | |
295 | |
| 207 | for x in ${CFLAGS}; do |
296 | for x in ${CFLAGS}; do |
| 208 | for y in ${ALLOWED_FLAGS}; do |
297 | for y in ${ALLOWED_FLAGS}; do |
| 209 | flag=${x%%=*} |
298 | flag=${x%%=*} |
| 210 | if [ "${flag%%${y}}" = "" ]; then |
299 | if [ "${flag%%${y}}" = "" ] ; then |
| 211 | NEW_CFLAGS="${NEW_CFLAGS} ${x}" |
300 | NEW_CFLAGS="${NEW_CFLAGS} ${x}" |
| 212 | break |
301 | break |
| 213 | fi |
302 | fi |
| 214 | done |
303 | done |
| 215 | done |
304 | done |
| 216 | |
305 | |
| 217 | for x in ${CXXFLAGS}; do |
306 | for x in ${CXXFLAGS}; do |
| 218 | for y in ${ALLOWED_FLAGS}; do |
307 | for y in ${ALLOWED_FLAGS}; do |
| 219 | flag=${x%%=*} |
308 | flag=${x%%=*} |
| 220 | if [ "${flag%%${y}}" = "" ]; then |
309 | if [ "${flag%%${y}}" = "" ] ; then |
| 221 | NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" |
310 | NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" |
| 222 | break |
311 | break |
| 223 | fi |
312 | fi |
| 224 | done |
313 | done |
| 225 | done |
314 | done |
| … | |
… | |
| 237 | export CFLAGS="${NEW_CFLAGS}" |
326 | export CFLAGS="${NEW_CFLAGS}" |
| 238 | export CXXFLAGS="${NEW_CXXFLAGS}" |
327 | export CXXFLAGS="${NEW_CXXFLAGS}" |
| 239 | return 0 |
328 | return 0 |
| 240 | } |
329 | } |
| 241 | |
330 | |
|
|
331 | test-flag-PROG() { |
|
|
332 | local comp=$1 |
|
|
333 | local flags="$2" |
|
|
334 | |
|
|
335 | [[ -z ${comp} || -z ${flags} ]] && \ |
|
|
336 | return 1 |
|
|
337 | |
|
|
338 | local PROG=$(tc-get${comp}) |
|
|
339 | ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ |
|
|
340 | > /dev/null 2>&1 |
|
|
341 | } |
|
|
342 | |
|
|
343 | # Returns true if C compiler support given flag |
|
|
344 | test-flag-CC() { test-flag-PROG "CC" "$1"; } |
|
|
345 | |
|
|
346 | # Returns true if C++ compiler support given flag |
|
|
347 | test-flag-CXX() { test-flag-PROG "CXX" "$1"; } |
|
|
348 | |
|
|
349 | test-flags-PROG() { |
|
|
350 | local comp=$1 |
|
|
351 | local flags |
|
|
352 | local x |
|
|
353 | |
|
|
354 | shift |
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|
355 | |
|
|
356 | [[ -z ${comp} ]] && return 1 |
|
|
357 | |
|
|
358 | x="" |
|
|
359 | for x in "$@" ; do |
|
|
360 | test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}" |
|
|
361 | done |
|
|
362 | |
|
|
363 | echo "${flags}" |
|
|
364 | |
|
|
365 | # Just bail if we dont have any flags |
|
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366 | [[ -n ${flags} ]] |
|
|
367 | } |
|
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368 | |
|
|
369 | # Returns (echo's) the given flags supported by the C compiler |
|
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370 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
|
|
371 | |
|
|
372 | # Returns (echo's) the given flags supported by the C++ compiler |
|
|
373 | test-flags-CXX() { test-flags-PROG "CXX" "$@"; } |
|
|
374 | |
|
|
375 | # Short-hand that should hopefully work for both C and C++ compiler, but |
|
|
376 | # its really only present due to the append-flags() abomination. |
|
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377 | test-flags() { test-flags-CC "$@"; } |
|
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378 | |
|
|
379 | # Depriciated, use test-flags() |
| 242 | test_flag() { |
380 | test_flag() { |
| 243 | local cc=${CC:-gcc} ; cc=${cc%% *} |
381 | ewarn "test_flag: deprecated, please use test-flags()!" >&2 |
| 244 | if ${cc} -S -xc "$@" -o /dev/null /dev/null &>/dev/null; then |
382 | |
| 245 | printf "%s\n" "$*" |
383 | test-flags-CC "$@" |
| 246 | return 0 |
|
|
| 247 | fi |
|
|
| 248 | return 1 |
|
|
| 249 | } |
384 | } |
| 250 | |
385 | |
| 251 | test_version_info() { |
386 | test_version_info() { |
| 252 | local cc=${CC:-gcc} ; cc=${cc%% *} |
|
|
| 253 | if [[ $(${cc} --version 2>&1) == *$1* ]]; then |
387 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
| 254 | return 0 |
388 | return 0 |
| 255 | else |
389 | else |
| 256 | return 1 |
390 | return 1 |
| 257 | fi |
391 | fi |
| 258 | } |
392 | } |
| 259 | |
393 | |
| 260 | strip-unsupported-flags() { |
394 | strip-unsupported-flags() { |
| 261 | local NEW_CFLAGS NEW_CXXFLAGS |
395 | export CFLAGS=$(test-flags-CC ${CFLAGS}) |
| 262 | |
396 | export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS}) |
| 263 | for x in ${CFLAGS} ; do |
|
|
| 264 | NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`" |
|
|
| 265 | done |
|
|
| 266 | for x in ${CXXFLAGS} ; do |
|
|
| 267 | NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`" |
|
|
| 268 | done |
|
|
| 269 | |
|
|
| 270 | export CFLAGS="${NEW_CFLAGS}" |
|
|
| 271 | export CXXFLAGS="${NEW_CXXFLAGS}" |
|
|
| 272 | } |
397 | } |
| 273 | |
398 | |
| 274 | get-flag() { |
399 | get-flag() { |
| 275 | local f findflag="$1" |
400 | local f findflag="$1" |
| 276 | |
401 | |
| … | |
… | |
| 286 | fi |
411 | fi |
| 287 | done |
412 | done |
| 288 | return 1 |
413 | return 1 |
| 289 | } |
414 | } |
| 290 | |
415 | |
|
|
416 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
| 291 | has_hardened() { |
417 | has_hardened() { |
|
|
418 | ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2 |
|
|
419 | |
| 292 | test_version_info Hardened |
420 | test_version_info Hardened && return 0 |
| 293 | return $? |
421 | # The specs file wont exist unless gcc has GCC_SPECS support |
|
|
422 | [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]] |
| 294 | } |
423 | } |
| 295 | |
424 | |
|
|
425 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
426 | # indicate whether PIC is set |
| 296 | has_pic() { |
427 | has_pic() { |
| 297 | [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 |
428 | ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 |
| 298 | [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 |
|
|
| 299 | test_version_info pie && return 0 |
|
|
| 300 | return 1 |
|
|
| 301 | } |
|
|
| 302 | |
429 | |
|
|
430 | [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ |
|
|
431 | ${CFLAGS/-fpic} != ${CFLAGS} ]] || \ |
|
|
432 | gcc-specs-pie |
|
|
433 | } |
|
|
434 | |
|
|
435 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
436 | # indicate whether PIE is set |
| 303 | has_pie() { |
437 | has_pie() { |
| 304 | [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 |
438 | ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 |
| 305 | [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 |
439 | |
| 306 | test_version_info pie && return 0 |
440 | [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ |
| 307 | return 1 |
441 | ${CFLAGS/-fpie} != ${CFLAGS} ]] || \ |
|
|
442 | gcc-specs-pie |
| 308 | } |
443 | } |
| 309 | |
444 | |
|
|
445 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
446 | # indicate whether code for SSP is being generated for all functions |
|
|
447 | has_ssp_all() { |
|
|
448 | ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
449 | |
|
|
450 | # note; this matches only -fstack-protector-all |
|
|
451 | [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ |
|
|
452 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ |
|
|
453 | gcc-specs-ssp-all |
|
|
454 | } |
|
|
455 | |
|
|
456 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
457 | # indicate whether code for SSP is being generated |
| 310 | has_ssp() { |
458 | has_ssp() { |
|
|
459 | ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
460 | |
|
|
461 | # note; this matches both -fstack-protector and -fstack-protector-all |
| 311 | [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 |
462 | [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \ |
| 312 | test_version_info ssp && return 0 |
463 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ |
| 313 | return 1 |
464 | gcc-specs-ssp |
| 314 | } |
465 | } |
| 315 | |
466 | |
| 316 | has_m64() { |
467 | has_m64() { |
| 317 | # this doesnt test if the flag is accepted, it tests if the flag |
468 | # this doesnt test if the flag is accepted, it tests if the flag |
| 318 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
469 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
| 319 | # please dont replace this function with test_flag in some future |
470 | # please dont replace this function with test_flag in some future |
| 320 | # clean-up! |
471 | # clean-up! |
| 321 | temp=`mktemp` |
472 | |
|
|
473 | local temp="$(emktemp)" |
| 322 | echo "int main() { return(0); }" > ${temp}.c |
474 | echo "int main() { return(0); }" > "${temp}".c |
| 323 | ${CC/ .*/} -m64 -o /dev/null ${temp}.c > /dev/null 2>&1 |
475 | MY_CC=$(tc-getCC) |
| 324 | ret=$? |
476 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
|
|
477 | local ret=$? |
| 325 | rm -f ${temp}.c |
478 | rm -f "${temp}".c |
| 326 | [ "$ret" != "1" ] && return 0 |
479 | [[ ${ret} != 1 ]] && return 0 |
| 327 | return 1 |
480 | return 1 |
| 328 | } |
481 | } |
| 329 | |
482 | |
| 330 | has_m32() { |
483 | has_m32() { |
| 331 | # this doesnt test if the flag is accepted, it tests if the flag |
484 | # this doesnt test if the flag is accepted, it tests if the flag |
| 332 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
485 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
| 333 | # please dont replace this function with test_flag in some future |
486 | # please dont replace this function with test_flag in some future |
| 334 | # clean-up! |
487 | # clean-up! |
| 335 | temp=`mktemp` |
488 | |
|
|
489 | [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0 |
|
|
490 | |
|
|
491 | local temp=$(emktemp) |
| 336 | echo "int main() { return(0); }" > ${temp}.c |
492 | echo "int main() { return(0); }" > "${temp}".c |
| 337 | ${CC/ .*/} -m32 -o /dev/null ${temp}.c > /dev/null 2>&1 |
493 | MY_CC=$(tc-getCC) |
| 338 | ret=$? |
494 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
|
|
495 | local ret=$? |
| 339 | rm -f ${temp}.c |
496 | rm -f "${temp}".c |
| 340 | [ "$ret" != "1" ] && return 0 |
497 | [[ ${ret} != 1 ]] && return 0 |
| 341 | return 1 |
498 | return 1 |
| 342 | } |
499 | } |
| 343 | |
500 | |
| 344 | replace-sparc64-flags() { |
501 | replace-sparc64-flags() { |
| 345 | local SPARC64_CPUS="ultrasparc v9" |
502 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
| 346 | |
503 | |
| 347 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
504 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
| 348 | for x in ${SPARC64_CPUS}; do |
505 | for x in ${SPARC64_CPUS}; do |
| 349 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
506 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
| 350 | done |
507 | done |
| 351 | else |
508 | else |
| 352 | for x in ${SPARC64_CPUS}; do |
509 | for x in ${SPARC64_CPUS}; do |
| 353 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
510 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
| 354 | done |
511 | done |
| 355 | fi |
512 | fi |
| 356 | |
513 | |
| 357 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
514 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
| 358 | for x in ${SPARC64_CPUS}; do |
515 | for x in ${SPARC64_CPUS}; do |
| 359 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
516 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
| 360 | done |
517 | done |
| 361 | else |
518 | else |
| 362 | for x in ${SPARC64_CPUS}; do |
519 | for x in ${SPARC64_CPUS}; do |
| 363 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
520 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
| 364 | done |
521 | done |
| 365 | fi |
522 | fi |
| 366 | |
523 | |
| 367 | export CFLAGS CXXFLAGS |
524 | export CFLAGS CXXFLAGS |
| 368 | } |
525 | } |
| 369 | |
526 | |
| 370 | append-ldflags() { |
527 | append-ldflags() { |
|
|
528 | [[ -z $* ]] && return 0 |
| 371 | export LDFLAGS="${LDFLAGS} $*" |
529 | export LDFLAGS="${LDFLAGS} $*" |
| 372 | return 0 |
530 | return 0 |
| 373 | } |
531 | } |
| 374 | |
532 | |
|
|
533 | # Remove flags from LDFLAGS - it's up to the ebuild to filter |
|
|
534 | # CFLAGS and CXXFLAGS via filter-flags if they need to. |
| 375 | filter-ldflags() { |
535 | filter-ldflags() { |
| 376 | local x |
536 | _filter-var LDFLAGS "$@" |
|
|
537 | return 0 |
|
|
538 | } |
| 377 | |
539 | |
| 378 | # we do this fancy spacing stuff so as to not filter |
540 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
| 379 | # out part of a flag ... we want flag atoms ! :D |
541 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
| 380 | LDFLAGS=" ${LDFLAGS} " |
542 | # to gcc where it needs the '-Wl,'. |
|
|
543 | raw-ldflags() { |
|
|
544 | local x input="$@" |
|
|
545 | [[ -z ${input} ]] && input=${LDFLAGS} |
|
|
546 | set -- |
| 381 | for x in "$@" ; do |
547 | for x in ${input} ; do |
| 382 | LDFLAGS="${LDFLAGS// ${x} / }" |
548 | x=${x#-Wl,} |
|
|
549 | set -- "$@" ${x//,/ } |
| 383 | done |
550 | done |
| 384 | LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" |
551 | echo "$@" |
| 385 | export LDFLAGS |
|
|
| 386 | return 0 |
|
|
| 387 | } |
552 | } |
| 388 | |
553 | |
| 389 | etexec-flags() { |
554 | # Gets the flags needed for "NOW" binding |
| 390 | # if you're not using a hardened compiler you wont need this |
555 | bindnow-flags() { |
| 391 | # PIC/no-pic kludge in the first place. |
556 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
| 392 | has_hardened || return 0 |
557 | *GNU* | *'with BFD'*) # GNU ld |
| 393 | |
558 | echo "-Wl,-z,now" ;; |
| 394 | if has_pie || has_pic; then |
559 | *Apple*) # Darwin ld |
| 395 | [ -z "`is-flag -fno-pic`" ] && |
560 | echo "-bind_at_load" ;; |
| 396 | export CFLAGS="${CFLAGS} `test_flag -fno-pic`" |
561 | *) |
| 397 | [ -z "`is-flag -nopie`" ] && |
562 | # Some linkers just recognize -V instead of -v |
| 398 | export CFLAGS="${CFLAGS} `test_flag -nopie`" |
563 | case $($(tc-getLD) -V 2>&1 </dev/null) in |
| 399 | fi |
564 | *Solaris*) # Solaris accept almost the same GNU options |
| 400 | return 0 |
565 | echo "-Wl,-z,now" ;; |
|
|
566 | esac |
|
|
567 | ;; |
|
|
568 | esac |
| 401 | } |
569 | } |
| 402 | |
570 | |
| 403 | fstack-flags() { |
571 | |
| 404 | if has_ssp; then |
572 | # Some tests for when we screw with things and want to make |
| 405 | [ -z "`is-flag -fno-stack-protector`" ] && |
573 | # sure we didn't break anything |
| 406 | export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" |
574 | #TESTS() { |
| 407 | fi |
575 | # CFLAGS="-a -b -c=1" |
| 408 | return 0 |
576 | # CXXFLAGS="-x -y -z=2" |
| 409 | } |
577 | # LDFLAGS="-l -m -n=3" |
|
|
578 | # |
|
|
579 | # die() { exit 1; } |
|
|
580 | # (is-flag 1 2 3) && die |
|
|
581 | # (is-ldflag 1 2 3) && die |
|
|
582 | # |
|
|
583 | # is-flagq -l && die |
|
|
584 | # is-ldflagq -a && die |
|
|
585 | # is-flagq -a || die |
|
|
586 | # is-flagq -x || die |
|
|
587 | # is-ldflagq -n=* || die |
|
|
588 | # is-ldflagq -n && die |
|
|
589 | # |
|
|
590 | # strip-unsupported-flags |
|
|
591 | # [[ ${CFLAGS} == "-c=1" ]] || die |
|
|
592 | # [[ ${CXXFLAGS} == "-y -z=2" ]] || die |
|
|
593 | # |
|
|
594 | # echo "All tests pass" |
|
|
595 | #} |
|
|
596 | #TESTS |
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