/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.72 - (show annotations) (download)
Sun Jul 22 19:56:37 2007 UTC (7 years, 3 months ago) by vapier
Branch: MAIN
Changes since 1.71: +2 -1 lines
add avr to the arch list

1 # Copyright 1999-2007 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.71 2007/07/11 04:06:29 robbat2 Exp $
4 #
5 # Maintainer: Toolchain Ninjas <toolchain@gentoo.org>
6 #
7 # This eclass contains (or should) functions to get common info
8 # about the toolchain (libc/compiler/binutils/etc...)
9
10 ___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
11 [[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
12
13 DESCRIPTION="Based on the ${ECLASS} eclass"
14
15 tc-getPROG() {
16 local var=$1
17 local prog=$2
18
19 if [[ -n ${!var} ]] ; then
20 echo "${!var}"
21 return 0
22 fi
23
24 local search=
25 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
26 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
27 [[ -n ${search} ]] && prog=${search##*/}
28
29 export ${var}=${prog}
30 echo "${!var}"
31 }
32
33 # Returns the name of the archiver
34 tc-getAR() { tc-getPROG AR ar "$@"; }
35 # Returns the name of the assembler
36 tc-getAS() { tc-getPROG AS as "$@"; }
37 # Returns the name of the C compiler
38 tc-getCC() { tc-getPROG CC gcc "$@"; }
39 # Returns the name of the C preprocessor
40 tc-getCPP() { tc-getPROG CPP cpp "$@"; }
41 # Returns the name of the C++ compiler
42 tc-getCXX() { tc-getPROG CXX g++ "$@"; }
43 # Returns the name of the linker
44 tc-getLD() { tc-getPROG LD ld "$@"; }
45 # Returns the name of the strip prog
46 tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
47 # Returns the name of the symbol/object thingy
48 tc-getNM() { tc-getPROG NM nm "$@"; }
49 # Returns the name of the archiver indexer
50 tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
51 # Returns the name of the fortran 77 compiler
52 tc-getF77() { tc-getPROG F77 f77 "$@"; }
53 # Returns the name of the fortran 90 compiler
54 tc-getF90() { tc-getPROG F90 gfortran "$@"; }
55 # Returns the name of the fortran compiler
56 tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
57 # Returns the name of the java compiler
58 tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
59
60 # Returns the name of the C compiler for build
61 tc-getBUILD_CC() {
62 local v
63 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
64 if [[ -n ${!v} ]] ; then
65 export BUILD_CC=${!v}
66 echo "${!v}"
67 return 0
68 fi
69 done
70
71 local search=
72 if [[ -n ${CBUILD} ]] ; then
73 search=$(type -p ${CBUILD}-gcc)
74 search=${search##*/}
75 fi
76 search=${search:-gcc}
77
78 export BUILD_CC=${search}
79 echo "${search}"
80 }
81
82 # Quick way to export a bunch of vars at once
83 tc-export() {
84 local var
85 for var in "$@" ; do
86 eval tc-get${var} > /dev/null
87 done
88 }
89
90 # A simple way to see if we're using a cross-compiler ...
91 tc-is-cross-compiler() {
92 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
93 }
94
95 # See if this toolchain is a softfloat based one.
96 # The possible return values:
97 # - only: the target is always softfloat (never had fpu)
98 # - yes: the target should support softfloat
99 # - no: the target should support hardfloat
100 # This allows us to react differently where packages accept
101 # softfloat flags in the case where support is optional, but
102 # rejects softfloat flags where the target always lacks an fpu.
103 tc-is-softfloat() {
104 case ${CTARGET} in
105 bfin*|h8300*)
106 echo "only" ;;
107 *)
108 [[ ${CTARGET//_/-} == *-softfloat-* ]] \
109 && echo "yes" \
110 || echo "no"
111 ;;
112 esac
113 }
114
115 # Parse information from CBUILD/CHOST/CTARGET rather than
116 # use external variables from the profile.
117 tc-ninja_magic_to_arch() {
118 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
119
120 local type=$1
121 local host=$2
122 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
123
124 case ${host} in
125 alpha*) echo alpha;;
126 arm*) echo arm;;
127 avr*) ninj avr32 avr;;
128 bfin*) ninj blackfin bfin;;
129 cris*) echo cris;;
130 hppa*) ninj parisc hppa;;
131 i?86*) ninj i386 x86;;
132 ia64*) echo ia64;;
133 m68*) echo m68k;;
134 mips*) echo mips;;
135 nios2*) echo nios2;;
136 nios*) echo nios;;
137 powerpc*)
138 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
139 # have been unified into simply 'powerpc', but until 2.6.16,
140 # ppc32 is still using ARCH="ppc" as default
141 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
142 echo powerpc
143 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
144 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
145 echo powerpc
146 else
147 echo ppc
148 fi
149 elif [[ ${host} == powerpc64* ]] ; then
150 echo ppc64
151 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
152 ninj ppc64 ppc
153 else
154 echo ppc
155 fi
156 ;;
157 s390*) echo s390;;
158 sh64*) ninj sh64 sh;;
159 sh*) echo sh;;
160 sparc64*) ninj sparc64 sparc;;
161 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
162 && ninj sparc64 sparc \
163 || echo sparc
164 ;;
165 vax*) echo vax;;
166 x86_64*) ninj x86_64 amd64;;
167 *) echo ${ARCH};;
168 esac
169 }
170 tc-arch-kernel() {
171 tc-ninja_magic_to_arch kern $@
172 }
173 tc-arch() {
174 tc-ninja_magic_to_arch portage $@
175 }
176 tc-endian() {
177 local host=$1
178 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
179 host=${host%%-*}
180
181 case ${host} in
182 alpha*) echo big;;
183 arm*b*) echo big;;
184 arm*) echo little;;
185 cris*) echo little;;
186 hppa*) echo big;;
187 i?86*) echo little;;
188 ia64*) echo little;;
189 m68*) echo big;;
190 mips*l*) echo little;;
191 mips*) echo big;;
192 powerpc*) echo big;;
193 s390*) echo big;;
194 sh*b*) echo big;;
195 sh*) echo little;;
196 sparc*) echo big;;
197 x86_64*) echo little;;
198 *) echo wtf;;
199 esac
200 }
201
202 # Returns the version as by `$CC -dumpversion`
203 gcc-fullversion() {
204 $(tc-getCC "$@") -dumpversion
205 }
206 # Returns the version, but only the <major>.<minor>
207 gcc-version() {
208 gcc-fullversion "$@" | cut -f1,2 -d.
209 }
210 # Returns the Major version
211 gcc-major-version() {
212 gcc-version "$@" | cut -f1 -d.
213 }
214 # Returns the Minor version
215 gcc-minor-version() {
216 gcc-version "$@" | cut -f2 -d.
217 }
218 # Returns the Micro version
219 gcc-micro-version() {
220 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
221 }
222 # Returns the installation directory - internal toolchain
223 # function for use by _gcc-specs-exists (for flag-o-matic).
224 _gcc-install-dir() {
225 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\
226 awk '$1=="install:" {print $2}')"
227 }
228 # Returns true if the indicated specs file exists - internal toolchain
229 # function for use by flag-o-matic.
230 _gcc-specs-exists() {
231 [[ -f $(_gcc-install-dir)/$1 ]]
232 }
233
234 # Returns requested gcc specs directive unprocessed - for used by
235 # gcc-specs-directive()
236 # Note; later specs normally overwrite earlier ones; however if a later
237 # spec starts with '+' then it appends.
238 # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
239 # as "Reading <file>", in order. Strictly speaking, if there's a
240 # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
241 # the same token anything from 'gcc -dumpspecs' is overridden by
242 # the contents of $(gcc_install_dir)/specs so the result is the
243 # same either way.
244 _gcc-specs-directive_raw() {
245 local cc=$(tc-getCC)
246 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
247 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
248 'BEGIN { pspec=""; spec=""; outside=1 }
249 $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
250 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
251 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
252 { spec=spec $0 }
253 END { print spec }'
254 return 0
255 }
256
257 # Return the requested gcc specs directive, with all included
258 # specs expanded.
259 # Note, it does not check for inclusion loops, which cause it
260 # to never finish - but such loops are invalid for gcc and we're
261 # assuming gcc is operational.
262 gcc-specs-directive() {
263 local directive subdname subdirective
264 directive="$(_gcc-specs-directive_raw $1)"
265 while [[ ${directive} == *%\(*\)* ]]; do
266 subdname=${directive/*%\(}
267 subdname=${subdname/\)*}
268 subdirective="$(_gcc-specs-directive_raw ${subdname})"
269 directive="${directive//\%(${subdname})/${subdirective}}"
270 done
271 echo "${directive}"
272 return 0
273 }
274
275 # Returns true if gcc sets relro
276 gcc-specs-relro() {
277 local directive
278 directive=$(gcc-specs-directive link_command)
279 return $([[ ${directive/\{!norelro:} != ${directive} ]])
280 }
281 # Returns true if gcc sets now
282 gcc-specs-now() {
283 local directive
284 directive=$(gcc-specs-directive link_command)
285 return $([[ ${directive/\{!nonow:} != ${directive} ]])
286 }
287 # Returns true if gcc builds PIEs
288 gcc-specs-pie() {
289 local directive
290 directive=$(gcc-specs-directive cc1)
291 return $([[ ${directive/\{!nopie:} != ${directive} ]])
292 }
293 # Returns true if gcc builds with the stack protector
294 gcc-specs-ssp() {
295 local directive
296 directive=$(gcc-specs-directive cc1)
297 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
298 }
299 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
300 gcc-specs-ssp-to-all() {
301 local directive
302 directive=$(gcc-specs-directive cc1)
303 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
304 }
305
306
307 # This function generate linker scripts in /usr/lib for dynamic
308 # libs in /lib. This is to fix linking problems when you have
309 # the .so in /lib, and the .a in /usr/lib. What happens is that
310 # in some cases when linking dynamic, the .a in /usr/lib is used
311 # instead of the .so in /lib due to gcc/libtool tweaking ld's
312 # library search path. This cause many builds to fail.
313 # See bug #4411 for more info.
314 #
315 # To use, simply call:
316 #
317 # gen_usr_ldscript libfoo.so
318 #
319 # Note that you should in general use the unversioned name of
320 # the library, as ldconfig should usually update it correctly
321 # to point to the latest version of the library present.
322 gen_usr_ldscript() {
323 local lib libdir=$(get_libdir) output_format=""
324 # Just make sure it exists
325 dodir /usr/${libdir}
326
327 # OUTPUT_FORMAT gives hints to the linker as to what binary format
328 # is referenced ... makes multilib saner
329 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
330 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
331
332 for lib in "$@" ; do
333 if [[ ${USERLAND} == "Darwin" ]] ; then
334 ewarn "Not creating fake dynamic library for $lib on Darwin;"
335 ewarn "making a symlink instead."
336 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
337 else
338 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
339 /* GNU ld script
340 Since Gentoo has critical dynamic libraries
341 in /lib, and the static versions in /usr/lib,
342 we need to have a "fake" dynamic lib in /usr/lib,
343 otherwise we run into linking problems.
344
345 See bug http://bugs.gentoo.org/4411 for more info.
346 */
347 ${output_format}
348 GROUP ( /${libdir}/${lib} )
349 END_LDSCRIPT
350 fi
351 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
352 done
353 }

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