1 | # Copyright 1999-2004 Gentoo Foundation |
1 | # Copyright 1999-2005 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 1.79 2004/12/25 18:45:56 chriswhite Exp $ |
3 | # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.106 2006/02/19 23:18:30 vapier Exp $ |
4 | # |
|
|
5 | # Author Bart Verwilst <verwilst@gentoo.org> |
|
|
6 | |
4 | |
7 | ECLASS=flag-o-matic |
|
|
8 | INHERITED="$INHERITED $ECLASS" |
|
|
9 | |
|
|
10 | IUSE="debug" |
|
|
11 | |
5 | |
12 | # need access to emktemp() |
6 | # need access to emktemp() |
13 | inherit eutils toolchain-funcs |
7 | inherit eutils toolchain-funcs multilib |
14 | |
8 | |
15 | # |
9 | # |
16 | #### filter-flags <flags> #### |
10 | #### filter-flags <flags> #### |
17 | # Remove particular flags from C[XX]FLAGS |
11 | # Remove particular flags from C[XX]FLAGS |
18 | # Matches only complete flags |
12 | # Matches only complete flags |
… | |
… | |
25 | # |
19 | # |
26 | #### replace-cpu-flags <old.cpus> <new.cpu> ### |
20 | #### replace-cpu-flags <old.cpus> <new.cpu> ### |
27 | # Replace march/mcpu flags that specify <old.cpus> |
21 | # Replace march/mcpu flags that specify <old.cpus> |
28 | # with flags that specify <new.cpu> |
22 | # with flags that specify <new.cpu> |
29 | # |
23 | # |
30 | #### is-flag <flag> #### |
24 | #### is-flag[q] <flag> #### |
31 | # Returns "true" if flag is set in C[XX]FLAGS |
25 | # Returns "true" if flag is set in C[XX]FLAGS |
32 | # Matches only complete a flag |
26 | # Matches only complete a flag |
|
|
27 | # q version sets return code but doesn't echo |
|
|
28 | # |
|
|
29 | #### is-ldflag[q] <flag> #### |
|
|
30 | # Returns "true" if flag is set in LDFLAGS |
|
|
31 | # Matches only complete a flag |
|
|
32 | # q version sets return code but doesn't echo |
33 | # |
33 | # |
34 | #### strip-flags #### |
34 | #### strip-flags #### |
35 | # Strip C[XX]FLAGS of everything except known |
35 | # Strip C[XX]FLAGS of everything except known |
36 | # good options. |
36 | # good options. |
37 | # |
37 | # |
… | |
… | |
56 | # |
56 | # |
57 | #### filter-ldflags <flags> #### |
57 | #### filter-ldflags <flags> #### |
58 | # Remove particular flags from LDFLAGS |
58 | # Remove particular flags from LDFLAGS |
59 | # Matches only complete flags |
59 | # Matches only complete flags |
60 | # |
60 | # |
61 | #### etexec-flags #### |
61 | #### bindnow-flags #### |
62 | # hooked function for hardened gcc that appends |
62 | # Returns the flags to enable "now" binding in the current selected linker. |
63 | # -fno-pic to {C,CXX,LD}FLAGS |
|
|
64 | # when a package is filtering -fpic, -fPIC, -fpie, -fPIE |
|
|
65 | # |
63 | # |
66 | #### fstack-flags #### |
64 | ################ DEPRECATED functions ################ |
67 | # hooked function for hardened gcc that appends |
65 | # The following are still present to avoid breaking existing |
68 | # -fno-stack-protector to {C,CXX,LD}FLAGS |
66 | # code more than necessary; however they are deprecated. Please |
69 | # when a package is filtering -fstack-protector, -fstack-protector-all |
67 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
70 | # notice: modern automatic specs files will also suppress -fstack-protector-all |
68 | # need to know which hardened techs are active in the compiler. |
71 | # when only -fno-stack-protector is given |
69 | # See bug #100974 |
|
|
70 | # |
|
|
71 | #### has_hardened #### |
|
|
72 | # Returns true if the compiler has 'Hardened' in its version string, |
|
|
73 | # (note; switched-spec vanilla compilers satisfy this condition) or |
|
|
74 | # the specs file name contains 'hardened'. |
|
|
75 | # |
|
|
76 | #### has_pie #### |
|
|
77 | # Returns true if the compiler by default or with current CFLAGS |
|
|
78 | # builds position-independent code. |
|
|
79 | # |
|
|
80 | #### has_pic #### |
|
|
81 | # Returns true if the compiler by default or with current CFLAGS |
|
|
82 | # builds position-independent code. |
|
|
83 | # |
|
|
84 | #### has_ssp_all #### |
|
|
85 | # Returns true if the compiler by default or with current CFLAGS |
|
|
86 | # generates stack smash protections for all functions |
|
|
87 | # |
|
|
88 | #### has_ssp #### |
|
|
89 | # Returns true if the compiler by default or with current CFLAGS |
|
|
90 | # generates stack smash protections for most vulnerable functions |
72 | # |
91 | # |
73 | |
92 | |
74 | # C[XX]FLAGS that we allow in strip-flags |
93 | # C[XX]FLAGS that we allow in strip-flags |
75 | setup-allowed-flags() { |
94 | setup-allowed-flags() { |
76 | if [ -z "${ALLOWED_FLAGS}" ] ; then |
95 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
77 | export ALLOWED_FLAGS="-pipe" |
96 | export ALLOWED_FLAGS="-pipe" |
78 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
97 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
79 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fno-stack-protector" |
98 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
|
|
99 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking" |
80 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time" |
100 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" |
81 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" |
101 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" |
82 | case "${ARCH}" in |
|
|
83 | mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;; |
|
|
84 | amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;; |
|
|
85 | x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;; |
|
|
86 | alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
|
|
87 | ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
|
|
88 | sparc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32 -m64" ;; |
|
|
89 | ppc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mabi" ;; |
|
|
90 | esac |
|
|
91 | fi |
102 | fi |
92 | # allow a bunch of flags that negate features / control ABI |
103 | # allow a bunch of flags that negate features / control ABI |
93 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" |
104 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" |
94 | case "${ARCH}" in |
105 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
95 | x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;; |
106 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ |
96 | esac |
107 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
97 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs -msoft-float -mflat -mno-faster-structs -mfaster-structs -mlittle-endian -mbig-endian -mlive-g0 -mcmodel -mno-stack-bias -mstack-bias" |
108 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
|
|
109 | -mieee -mieee-with-inexact \ |
|
|
110 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
|
|
111 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
|
|
112 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
|
|
113 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias" |
98 | |
114 | |
99 | # C[XX]FLAGS that we are think is ok, but needs testing |
115 | # C[XX]FLAGS that we are think is ok, but needs testing |
100 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
116 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
101 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" |
117 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
102 | return 0 |
118 | return 0 |
|
|
119 | } |
|
|
120 | |
|
|
121 | # inverted filters for hardened compiler. This is trying to unpick |
|
|
122 | # the hardened compiler defaults. |
|
|
123 | _filter-hardened() { |
|
|
124 | local f |
|
|
125 | for f in "$@" ; do |
|
|
126 | case "${f}" in |
|
|
127 | # Ideally we should only concern ourselves with PIE flags, |
|
|
128 | # not -fPIC or -fpic, but too many places filter -fPIC without |
|
|
129 | # thinking about -fPIE. |
|
|
130 | -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie) |
|
|
131 | gcc-specs-pie || continue |
|
|
132 | is-flagq -nopie || append-flags -nopie;; |
|
|
133 | -fstack-protector) |
|
|
134 | gcc-specs-ssp || continue |
|
|
135 | is-flagq -fno-stack-protector || append-flags -fno-stack-protector;; |
|
|
136 | -fstack-protector-all) |
|
|
137 | gcc-specs-ssp-to-all || continue |
|
|
138 | is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;; |
|
|
139 | esac |
|
|
140 | done |
|
|
141 | } |
|
|
142 | |
|
|
143 | # Remove occurrences of strings from variable given in $1 |
|
|
144 | # Strings removed are matched as globs, so for example |
|
|
145 | # '-O*' would remove -O1, -O2 etc. |
|
|
146 | _filter-var() { |
|
|
147 | local f x VAR VAL |
|
|
148 | declare -a new |
|
|
149 | |
|
|
150 | VAR=$1 |
|
|
151 | shift |
|
|
152 | eval VAL=\${${VAR}} |
|
|
153 | for f in ${VAL}; do |
|
|
154 | for x in "$@"; do |
|
|
155 | # Note this should work with globs like -O* |
|
|
156 | [[ ${f} == ${x} ]] && continue 2 |
|
|
157 | done |
|
|
158 | eval new\[\${\#new\[@]}]=\${f} |
|
|
159 | done |
|
|
160 | eval export ${VAR}=\${new\[*]} |
103 | } |
161 | } |
104 | |
162 | |
105 | filter-flags() { |
163 | filter-flags() { |
106 | local x f fset |
164 | _filter-hardened "$@" |
107 | declare -a new_CFLAGS new_CXXFLAGS |
165 | _filter-var CFLAGS "$@" |
108 | |
166 | _filter-var CXXFLAGS "$@" |
109 | for x in "$@" ; do |
|
|
110 | case "${x}" in |
|
|
111 | -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; |
|
|
112 | -fstack-protector|-fstack-protector-all) fstack-flags;; |
|
|
113 | esac |
|
|
114 | done |
|
|
115 | |
|
|
116 | for fset in CFLAGS CXXFLAGS; do |
|
|
117 | # Looping over the flags instead of using a global |
|
|
118 | # substitution ensures that we're working with flag atoms. |
|
|
119 | # Otherwise globs like -O* have the potential to wipe out the |
|
|
120 | # list of flags. |
|
|
121 | for f in ${!fset}; do |
|
|
122 | for x in "$@"; do |
|
|
123 | # Note this should work with globs like -O* |
|
|
124 | [[ ${f} == ${x} ]] && continue 2 |
|
|
125 | done |
|
|
126 | eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f} |
|
|
127 | done |
|
|
128 | eval export ${fset}=\${new_${fset}\[*]} |
|
|
129 | done |
|
|
130 | |
|
|
131 | return 0 |
167 | return 0 |
132 | } |
168 | } |
133 | |
169 | |
134 | filter-lfs-flags() { |
170 | filter-lfs-flags() { |
|
|
171 | [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" |
135 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
172 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
136 | } |
173 | } |
137 | |
174 | |
138 | append-lfs-flags() { |
175 | append-lfs-flags() { |
|
|
176 | [[ -n $@ ]] && die "append-lfs-flags takes no arguments" |
139 | append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
177 | append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
140 | } |
178 | } |
141 | |
179 | |
142 | append-flags() { |
180 | append-flags() { |
|
|
181 | [[ -z $* ]] && return 0 |
143 | export CFLAGS="${CFLAGS} $*" |
182 | export CFLAGS="${CFLAGS} $*" |
144 | export CXXFLAGS="${CXXFLAGS} $*" |
183 | export CXXFLAGS="${CXXFLAGS} $*" |
145 | [ -n "`is-flag -fno-stack-protector`" -o \ |
|
|
146 | -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags |
|
|
147 | return 0 |
184 | return 0 |
148 | } |
185 | } |
149 | |
186 | |
150 | replace-flags() { |
187 | replace-flags() { |
|
|
188 | [[ $# != 2 ]] \ |
|
|
189 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
|
|
190 | && die "replace-flags takes 2 arguments, not $#" |
|
|
191 | |
151 | local f fset |
192 | local f fset |
152 | declare -a new_CFLAGS new_CXXFLAGS |
193 | declare -a new_CFLAGS new_CXXFLAGS |
153 | |
194 | |
154 | for fset in CFLAGS CXXFLAGS; do |
195 | for fset in CFLAGS CXXFLAGS; do |
155 | # Looping over the flags instead of using a global |
196 | # Looping over the flags instead of using a global |
156 | # substitution ensures that we're working with flag atoms. |
197 | # substitution ensures that we're working with flag atoms. |
… | |
… | |
178 | shift |
219 | shift |
179 | done |
220 | done |
180 | return 0 |
221 | return 0 |
181 | } |
222 | } |
182 | |
223 | |
183 | is-flag() { |
224 | is-flagq() { |
184 | local x |
225 | local x |
185 | |
226 | |
186 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
227 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
187 | # Note this should work with globs like -mcpu=ultrasparc* |
228 | # Note this should work with globs like -mcpu=ultrasparc* |
188 | if [[ ${x} == ${1} ]]; then |
229 | if [[ ${x} == ${1} ]]; then |
189 | echo true |
|
|
190 | return 0 |
230 | return 0 |
191 | fi |
231 | fi |
192 | done |
232 | done |
|
|
233 | return 1 |
|
|
234 | } |
|
|
235 | |
|
|
236 | is-flag() { |
|
|
237 | if is-flagq ${1}; then |
|
|
238 | echo true |
|
|
239 | return 0 |
|
|
240 | fi |
|
|
241 | return 1 |
|
|
242 | } |
|
|
243 | |
|
|
244 | is-ldflagq() { |
|
|
245 | local x |
|
|
246 | |
|
|
247 | for x in ${LDFLAGS} ; do |
|
|
248 | # Note this should work with globs like -mcpu=ultrasparc* |
|
|
249 | if [[ ${x} == ${1} ]]; then |
|
|
250 | return 0 |
|
|
251 | fi |
|
|
252 | done |
|
|
253 | return 1 |
|
|
254 | } |
|
|
255 | |
|
|
256 | is-ldflag() { |
|
|
257 | if is-ldflagq ${1}; then |
|
|
258 | echo true |
|
|
259 | return 0 |
|
|
260 | fi |
193 | return 1 |
261 | return 1 |
194 | } |
262 | } |
195 | |
263 | |
196 | filter-mfpmath() { |
264 | filter-mfpmath() { |
197 | local orig_mfpmath new_math prune_math |
265 | local orig_mfpmath new_math prune_math |
… | |
… | |
226 | |
294 | |
227 | local NEW_CFLAGS="" |
295 | local NEW_CFLAGS="" |
228 | local NEW_CXXFLAGS="" |
296 | local NEW_CXXFLAGS="" |
229 | |
297 | |
230 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
298 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
231 | if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then |
299 | if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then |
232 | use debug && einfo "Enabling the use of some unstable flags" |
|
|
233 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
300 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
234 | fi |
301 | fi |
235 | |
302 | |
236 | set -f # disable pathname expansion |
303 | set -f # disable pathname expansion |
237 | |
304 | |
… | |
… | |
268 | export CFLAGS="${NEW_CFLAGS}" |
335 | export CFLAGS="${NEW_CFLAGS}" |
269 | export CXXFLAGS="${NEW_CXXFLAGS}" |
336 | export CXXFLAGS="${NEW_CXXFLAGS}" |
270 | return 0 |
337 | return 0 |
271 | } |
338 | } |
272 | |
339 | |
|
|
340 | test-flag-PROG() { |
|
|
341 | local comp=$1 |
|
|
342 | local flags="$2" |
|
|
343 | |
|
|
344 | [[ -z ${comp} || -z ${flags} ]] && \ |
|
|
345 | return 1 |
|
|
346 | |
|
|
347 | local PROG=$(tc-get${comp}) |
|
|
348 | ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ |
|
|
349 | > /dev/null 2>&1 |
|
|
350 | } |
|
|
351 | |
|
|
352 | # Returns true if C compiler support given flag |
|
|
353 | test-flag-CC() { test-flag-PROG "CC" "$1"; } |
|
|
354 | |
|
|
355 | # Returns true if C++ compiler support given flag |
|
|
356 | test-flag-CXX() { test-flag-PROG "CXX" "$1"; } |
|
|
357 | |
|
|
358 | test-flags-PROG() { |
|
|
359 | local comp=$1 |
|
|
360 | local flags |
|
|
361 | local x |
|
|
362 | |
|
|
363 | shift |
|
|
364 | |
|
|
365 | [[ -z ${comp} ]] && \ |
|
|
366 | return 1 |
|
|
367 | |
|
|
368 | for x in "$@" ; do |
|
|
369 | test-flag-${comp} "${x}" && flags="${flags} ${x}" |
|
|
370 | done |
|
|
371 | |
|
|
372 | echo "${flags}" |
|
|
373 | |
|
|
374 | # Just bail if we dont have any flags |
|
|
375 | [[ -n ${flags} ]] |
|
|
376 | } |
|
|
377 | |
|
|
378 | # Returns (echo's) the given flags supported by the C compiler |
|
|
379 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
|
|
380 | |
|
|
381 | # Returns (echo's) the given flags supported by the C++ compiler |
|
|
382 | test-flags-CXX() { test-flags-PROG "CXX" "$@"; } |
|
|
383 | |
|
|
384 | # Short-hand that should hopefully work for both C and C++ compiler, but |
|
|
385 | # its really only present due to the append-flags() abomination. |
|
|
386 | test-flags() { test-flags-CC "$@"; } |
|
|
387 | |
|
|
388 | # Depriciated, use test-flags() |
273 | test_flag() { |
389 | test_flag() { |
274 | if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then |
390 | ewarn "test_flag: deprecated, please use test-flags()!" >&2 |
275 | printf "%s\n" "$*" |
391 | |
276 | return 0 |
392 | test-flags-CC "$@" |
277 | fi |
|
|
278 | return 1 |
|
|
279 | } |
393 | } |
280 | |
394 | |
281 | test_version_info() { |
395 | test_version_info() { |
282 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
396 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
283 | return 0 |
397 | return 0 |
… | |
… | |
285 | return 1 |
399 | return 1 |
286 | fi |
400 | fi |
287 | } |
401 | } |
288 | |
402 | |
289 | strip-unsupported-flags() { |
403 | strip-unsupported-flags() { |
290 | local NEW_CFLAGS NEW_CXXFLAGS |
404 | local x NEW_CFLAGS NEW_CXXFLAGS |
291 | |
405 | |
292 | for x in ${CFLAGS} ; do |
406 | for x in ${CFLAGS} ; do |
293 | NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`" |
407 | NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})" |
294 | done |
408 | done |
295 | for x in ${CXXFLAGS} ; do |
409 | for x in ${CXXFLAGS} ; do |
296 | NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`" |
410 | NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})" |
297 | done |
411 | done |
298 | |
412 | |
299 | export CFLAGS="${NEW_CFLAGS}" |
413 | export CFLAGS=${NEW_CFLAGS} |
300 | export CXXFLAGS="${NEW_CXXFLAGS}" |
414 | export CXXFLAGS=${NEW_CXXFLAGS} |
301 | } |
415 | } |
302 | |
416 | |
303 | get-flag() { |
417 | get-flag() { |
304 | local f findflag="$1" |
418 | local f findflag="$1" |
305 | |
419 | |
… | |
… | |
315 | fi |
429 | fi |
316 | done |
430 | done |
317 | return 1 |
431 | return 1 |
318 | } |
432 | } |
319 | |
433 | |
|
|
434 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
320 | has_hardened() { |
435 | has_hardened() { |
|
|
436 | ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2 |
|
|
437 | |
321 | test_version_info Hardened && return 0 |
438 | test_version_info Hardened && return 0 |
322 | # the specs file wont exist unless gcc has GCC_SPECS support |
439 | # The specs file wont exist unless gcc has GCC_SPECS support |
323 | [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \ |
440 | [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]] |
324 | return 0 |
|
|
325 | return 1 |
|
|
326 | } |
441 | } |
327 | |
442 | |
|
|
443 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
444 | # indicate whether PIC is set |
328 | has_pic() { |
445 | has_pic() { |
329 | [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 |
446 | ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 |
330 | [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 |
|
|
331 | test_version_info pie && return 0 |
|
|
332 | return 1 |
|
|
333 | } |
|
|
334 | |
447 | |
|
|
448 | [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ |
|
|
449 | ${CFLAGS/-fpic} != ${CFLAGS} ]] || \ |
|
|
450 | gcc-specs-pie |
|
|
451 | } |
|
|
452 | |
|
|
453 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
454 | # indicate whether PIE is set |
335 | has_pie() { |
455 | has_pie() { |
336 | [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 |
456 | ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 |
337 | [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 |
457 | |
338 | test_version_info pie && return 0 |
458 | [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ |
339 | return 1 |
459 | ${CFLAGS/-fpie} != ${CFLAGS} ]] || \ |
|
|
460 | gcc-specs-pie |
340 | } |
461 | } |
341 | |
462 | |
|
|
463 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
464 | # indicate whether code for SSP is being generated for all functions |
|
|
465 | has_ssp_all() { |
|
|
466 | ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
467 | |
|
|
468 | # note; this matches only -fstack-protector-all |
|
|
469 | [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ |
|
|
470 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ |
|
|
471 | gcc-specs-ssp-all |
|
|
472 | } |
|
|
473 | |
|
|
474 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
475 | # indicate whether code for SSP is being generated |
342 | has_ssp() { |
476 | has_ssp() { |
|
|
477 | ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
478 | |
|
|
479 | # note; this matches both -fstack-protector and -fstack-protector-all |
343 | [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 |
480 | [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \ |
344 | test_version_info ssp && return 0 |
481 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ |
345 | return 1 |
482 | gcc-specs-ssp |
346 | } |
483 | } |
347 | |
484 | |
348 | has_m64() { |
485 | has_m64() { |
349 | # this doesnt test if the flag is accepted, it tests if the flag |
486 | # this doesnt test if the flag is accepted, it tests if the flag |
350 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
487 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
351 | # please dont replace this function with test_flag in some future |
488 | # please dont replace this function with test_flag in some future |
352 | # clean-up! |
489 | # clean-up! |
|
|
490 | |
353 | local temp="$(emktemp)" |
491 | local temp="$(emktemp)" |
354 | echo "int main() { return(0); }" > ${temp}.c |
492 | echo "int main() { return(0); }" > "${temp}".c |
355 | MY_CC=$(tc-getCC) |
493 | MY_CC=$(tc-getCC) |
356 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 |
494 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
357 | local ret=$? |
495 | local ret=$? |
358 | rm -f ${temp}.c |
496 | rm -f "${temp}".c |
359 | [ "$ret" != "1" ] && return 0 |
497 | [[ ${ret} != 1 ]] && return 0 |
360 | return 1 |
498 | return 1 |
361 | } |
499 | } |
362 | |
500 | |
363 | has_m32() { |
501 | has_m32() { |
364 | # this doesnt test if the flag is accepted, it tests if the flag |
502 | # this doesnt test if the flag is accepted, it tests if the flag |
365 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
503 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
366 | # please dont replace this function with test_flag in some future |
504 | # please dont replace this function with test_flag in some future |
367 | # clean-up! |
505 | # clean-up! |
|
|
506 | |
|
|
507 | [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0 |
|
|
508 | |
368 | local temp="$(emktemp)" |
509 | local temp=$(emktemp) |
369 | echo "int main() { return(0); }" > ${temp}.c |
510 | echo "int main() { return(0); }" > "${temp}".c |
370 | MY_CC=$(tc-getCC) |
511 | MY_CC=$(tc-getCC) |
371 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 |
512 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
372 | local ret=$? |
513 | local ret=$? |
373 | rm -f ${temp}.c |
514 | rm -f "${temp}".c |
374 | [ "$ret" != "1" ] && return 0 |
515 | [[ ${ret} != 1 ]] && return 0 |
375 | return 1 |
516 | return 1 |
376 | } |
517 | } |
377 | |
518 | |
378 | replace-sparc64-flags() { |
519 | replace-sparc64-flags() { |
379 | local SPARC64_CPUS="ultrasparc v9" |
520 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
380 | |
521 | |
381 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
522 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
382 | for x in ${SPARC64_CPUS}; do |
523 | for x in ${SPARC64_CPUS}; do |
383 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
524 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
384 | done |
525 | done |
385 | else |
526 | else |
386 | for x in ${SPARC64_CPUS}; do |
527 | for x in ${SPARC64_CPUS}; do |
387 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
528 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
388 | done |
529 | done |
389 | fi |
530 | fi |
390 | |
531 | |
391 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
532 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
392 | for x in ${SPARC64_CPUS}; do |
533 | for x in ${SPARC64_CPUS}; do |
393 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
534 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
394 | done |
535 | done |
395 | else |
536 | else |
396 | for x in ${SPARC64_CPUS}; do |
537 | for x in ${SPARC64_CPUS}; do |
… | |
… | |
400 | |
541 | |
401 | export CFLAGS CXXFLAGS |
542 | export CFLAGS CXXFLAGS |
402 | } |
543 | } |
403 | |
544 | |
404 | append-ldflags() { |
545 | append-ldflags() { |
|
|
546 | [[ -z $* ]] && return 0 |
405 | export LDFLAGS="${LDFLAGS} $*" |
547 | export LDFLAGS="${LDFLAGS} $*" |
406 | return 0 |
548 | return 0 |
407 | } |
549 | } |
408 | |
550 | |
|
|
551 | # Remove flags from LDFLAGS - it's up to the ebuild to filter |
|
|
552 | # CFLAGS and CXXFLAGS via filter-flags if they need to. |
409 | filter-ldflags() { |
553 | filter-ldflags() { |
410 | local x |
554 | _filter-var LDFLAGS "$@" |
|
|
555 | return 0 |
|
|
556 | } |
411 | |
557 | |
412 | # we do this fancy spacing stuff so as to not filter |
558 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
413 | # out part of a flag ... we want flag atoms ! :D |
559 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
414 | LDFLAGS=" ${LDFLAGS} " |
560 | # to gcc where it needs the '-Wl,'. |
|
|
561 | raw-ldflags() { |
|
|
562 | local x input="$@" |
|
|
563 | [[ -z ${input} ]] && input=${LDFLAGS} |
|
|
564 | set -- |
415 | for x in "$@" ; do |
565 | for x in ${input} ; do |
416 | LDFLAGS="${LDFLAGS// ${x} / }" |
566 | x=${x#-Wl,} |
|
|
567 | set -- "$@" ${x//,/ } |
417 | done |
568 | done |
418 | LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" |
569 | echo "$@" |
419 | export LDFLAGS |
|
|
420 | return 0 |
|
|
421 | } |
|
|
422 | |
|
|
423 | etexec-flags() { |
|
|
424 | # if you're not using a hardened compiler you wont need this |
|
|
425 | # PIC/no-pic kludge in the first place. |
|
|
426 | has_hardened || return 0 |
|
|
427 | use amd64 && return 0 |
|
|
428 | use mips && return 0 |
|
|
429 | |
|
|
430 | if has_pie || has_pic; then |
|
|
431 | [ -z "`is-flag -fno-pic`" ] && |
|
|
432 | export CFLAGS="${CFLAGS} `test_flag -fno-pic`" |
|
|
433 | [ -z "`is-flag -nopie`" ] && |
|
|
434 | export CFLAGS="${CFLAGS} `test_flag -nopie`" |
|
|
435 | fi |
|
|
436 | return 0 |
|
|
437 | } |
|
|
438 | |
|
|
439 | fstack-flags() { |
|
|
440 | if has_ssp; then |
|
|
441 | [ -z "`is-flag -fno-stack-protector`" ] && |
|
|
442 | export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" |
|
|
443 | fi |
|
|
444 | return 0 |
|
|
445 | } |
570 | } |
446 | |
571 | |
447 | # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>, |
572 | # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>, |
448 | # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more |
573 | # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more |
449 | # fixes. |
574 | # fixes. |
450 | # |
575 | # |
451 | # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3 |
576 | # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3 |
452 | gcc2-flags() { |
577 | gcc2-flags() { |
453 | CFLAGS=${CFLAGS//pentium-mmx/i586} |
578 | if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then |
454 | CFLAGS=${CFLAGS//pentium[234]/i686} |
579 | CFLAGS=${CFLAGS//-mtune=/-mcpu=} |
455 | CFLAGS=${CFLAGS//k6-[23]/k6} |
580 | CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=} |
456 | CFLAGS=${CFLAGS//athlon-tbird/i686} |
|
|
457 | CFLAGS=${CFLAGS//athlon-4/i686} |
|
|
458 | CFLAGS=${CFLAGS//athlon-[xm]p/i686} |
|
|
459 | CFLAGS=${CFLAGS//athlon/i686} |
|
|
460 | |
|
|
461 | CXXFLAGS=${CXXFLAGS//pentium-mmx/i586} |
|
|
462 | CXXFLAGS=${CXXFLAGS//pentium[234]/i686} |
|
|
463 | CXXFLAGS=${CXXFLAGS//k6-[23]/k6} |
|
|
464 | CXXFLAGS=${CXXFLAGS//athlon-tbird/i686} |
|
|
465 | CXXFLAGS=${CXXFLAGS//athlon-4/i686} |
|
|
466 | CXXFLAGS=${CXXFLAGS//athlon-[xm]p/i686} |
|
|
467 | CXXFLAGS=${CXXFLAGS//athlon/i686} |
|
|
468 | |
|
|
469 | if [ "$ARCH" = alpha ]; then |
|
|
470 | CHOST=${CHOST/#alphaev6[78]/alphaev6} |
|
|
471 | CFLAGS=${CFLAGS//ev6[78]/ev6} |
|
|
472 | CXXFLAGS=${CXXFLAGS//ev6[78]/ev6} |
|
|
473 | fi |
581 | fi |
|
|
582 | |
|
|
583 | replace-cpu-flags k6-{2,3} k6 |
|
|
584 | replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686 |
|
|
585 | |
|
|
586 | replace-cpu-flags pentium-mmx i586 |
|
|
587 | replace-cpu-flags pentium{2,3,4} i686 |
|
|
588 | |
|
|
589 | replace-cpu-flags ev6{7,8} ev6 |
474 | |
590 | |
475 | export CFLAGS CXXFLAGS |
591 | export CFLAGS CXXFLAGS |
476 | } |
592 | } |
|
|
593 | |
|
|
594 | # Gets the flags needed for "NOW" binding |
|
|
595 | bindnow-flags() { |
|
|
596 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
|
|
597 | *GNU* | *'with BFD'*) # GNU ld |
|
|
598 | echo "-Wl,-z,now" ;; |
|
|
599 | *Apple*) # Darwin ld |
|
|
600 | echo "-bind_at_load" ;; |
|
|
601 | *) |
|
|
602 | # Some linkers just recognize -V instead of -v |
|
|
603 | case $($(tc-getLD) -V 2>&1 </dev/null) in |
|
|
604 | *Solaris*) # Solaris accept almost the same GNU options |
|
|
605 | echo "-Wl,-z,now" ;; |
|
|
606 | esac |
|
|
607 | ;; |
|
|
608 | esac |
|
|
609 | } |