/[gentoo-x86]/eclass/toolchain-funcs.eclass
Gentoo

Diff of /eclass/toolchain-funcs.eclass

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

Revision 1.5 Revision 1.90
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/toolchain-funcs.eclass,v 1.5 2004/10/19 13:23:46 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.90 2009/04/05 07:50:08 grobian Exp $
4# 4
5# @ECLASS: toolchain-funcs.eclass
6# @MAINTAINER:
5# Author: Toolchain Ninjas <ninjas@gentoo.org> 7# Toolchain Ninjas <toolchain@gentoo.org>
6# 8# @BLURB: functions to query common info about the toolchain
7# This eclass contains (or should) functions to get common info 9# @DESCRIPTION:
8# about the toolchain (libc/compiler/binutils/etc...) 10# The toolchain-funcs aims to provide a complete suite of functions
11# for gleaning useful information about the toolchain and to simplify
12# ugly things like cross-compiling and multilib. All of this is done
13# in such a way that you can rely on the function always returning
14# something sane.
9 15
10inherit eutils 16___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
11 17[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
12ECLASS=toolchain-funcs
13INHERITED="$INHERITED $ECLASS"
14 18
15DESCRIPTION="Based on the ${ECLASS} eclass" 19DESCRIPTION="Based on the ${ECLASS} eclass"
16 20
17tc-getPROG() { 21tc-getPROG() {
18 local var="$1" 22 local var=$1
19 local prog="$2" 23 local prog=$2
20 local search=""
21 24
22 if [ -n "${!var}" ] ; then 25 if [[ -n ${!var} ]] ; then
23 echo "${!var}" 26 echo "${!var}"
24 return 0 27 return 0
25 fi 28 fi
26 29
27 # how should we handle the host/target/build ? 30 local search=
31 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
32 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
33 [[ -n ${search} ]] && prog=${search##*/}
34
35 export ${var}=${prog}
36 echo "${!var}"
37}
38
39# @FUNCTION: tc-getAR
40# @USAGE: [toolchain prefix]
41# @RETURN: name of the archiver
42tc-getAR() { tc-getPROG AR ar "$@"; }
43# @FUNCTION: tc-getAS
44# @USAGE: [toolchain prefix]
45# @RETURN: name of the assembler
46tc-getAS() { tc-getPROG AS as "$@"; }
47# @FUNCTION: tc-getCC
48# @USAGE: [toolchain prefix]
49# @RETURN: name of the C compiler
50tc-getCC() { tc-getPROG CC gcc "$@"; }
51# @FUNCTION: tc-getCPP
52# @USAGE: [toolchain prefix]
53# @RETURN: name of the C preprocessor
54tc-getCPP() { tc-getPROG CPP cpp "$@"; }
55# @FUNCTION: tc-getCXX
56# @USAGE: [toolchain prefix]
57# @RETURN: name of the C++ compiler
58tc-getCXX() { tc-getPROG CXX g++ "$@"; }
59# @FUNCTION: tc-getLD
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the linker
62tc-getLD() { tc-getPROG LD ld "$@"; }
63# @FUNCTION: tc-getSTRIP
64# @USAGE: [toolchain prefix]
65# @RETURN: name of the strip program
66tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
67# @FUNCTION: tc-getNM
68# @USAGE: [toolchain prefix]
69# @RETURN: name of the symbol/object thingy
70tc-getNM() { tc-getPROG NM nm "$@"; }
71# @FUNCTION: tc-getRANLIB
72# @USAGE: [toolchain prefix]
73# @RETURN: name of the archiver indexer
74tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
75# @FUNCTION: tc-getOBJCOPY
76# @USAGE: [toolchain prefix]
77# @RETURN: name of the object copier
78tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
79# @FUNCTION: tc-getF77
80# @USAGE: [toolchain prefix]
81# @RETURN: name of the Fortran 77 compiler
82tc-getF77() { tc-getPROG F77 f77 "$@"; }
83# @FUNCTION: tc-getFC
84# @USAGE: [toolchain prefix]
85# @RETURN: name of the Fortran 90 compiler
86tc-getFC() { tc-getPROG FC gfortran "$@"; }
87# @FUNCTION: tc-getGCJ
88# @USAGE: [toolchain prefix]
89# @RETURN: name of the java compiler
90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
91
92# @FUNCTION: tc-getBUILD_CC
93# @USAGE: [toolchain prefix]
94# @RETURN: name of the C compiler for building binaries to run on the build machine
95tc-getBUILD_CC() {
96 local v
97 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
28 if [ -n "${CHOST}" ] ; then 98 if [[ -n ${!v} ]] ; then
29 search="$(type -p "${CHOST}-${prog}")" 99 export BUILD_CC=${!v}
30 else 100 echo "${!v}"
31 if [ -n "${CTARGET}" ] ; then 101 return 0
32 search="$(type -p "${CTARGET}-${prog}")"
33 fi 102 fi
103 done
104
105 local search=
106 if [[ -n ${CBUILD} ]] ; then
107 search=$(type -p ${CBUILD}-gcc)
108 search=${search##*/}
34 fi 109 fi
110 search=${search:-gcc}
35 111
36 if [ -n "${search}" ] ; then 112 export BUILD_CC=${search}
37 prog="${search##*/}" 113 echo "${search}"
114}
115
116# @FUNCTION: tc-export
117# @USAGE: <list of toolchain variables>
118# @DESCRIPTION:
119# Quick way to export a bunch of compiler vars at once.
120tc-export() {
121 local var
122 for var in "$@" ; do
123 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
124 eval tc-get${var} > /dev/null
125 done
126}
127
128# @FUNCTION: tc-is-cross-compiler
129# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
130tc-is-cross-compiler() {
131 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
132}
133
134# @FUNCTION: tc-is-softfloat
135# @DESCRIPTION:
136# See if this toolchain is a softfloat based one.
137# @CODE
138# The possible return values:
139# - only: the target is always softfloat (never had fpu)
140# - yes: the target should support softfloat
141# - no: the target should support hardfloat
142# @CODE
143# This allows us to react differently where packages accept
144# softfloat flags in the case where support is optional, but
145# rejects softfloat flags where the target always lacks an fpu.
146tc-is-softfloat() {
147 case ${CTARGET} in
148 bfin*|h8300*)
149 echo "only" ;;
150 *)
151 [[ ${CTARGET//_/-} == *-softfloat-* ]] \
152 && echo "yes" \
153 || echo "no"
154 ;;
155 esac
156}
157
158# Parse information from CBUILD/CHOST/CTARGET rather than
159# use external variables from the profile.
160tc-ninja_magic_to_arch() {
161ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
162
163 local type=$1
164 local host=$2
165 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
166
167 case ${host} in
168 alpha*) echo alpha;;
169 arm*) echo arm;;
170 avr*) ninj avr32 avr;;
171 bfin*) ninj blackfin bfin;;
172 cris*) echo cris;;
173 hppa*) ninj parisc hppa;;
174 i?86*)
175 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
176 # trees have been unified into 'x86'.
177 # FreeBSD still uses i386
178 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
179 echo i386
180 else
181 echo x86
182 fi
183 ;;
184 ia64*) echo ia64;;
185 m68*) echo m68k;;
186 mips*) echo mips;;
187 nios2*) echo nios2;;
188 nios*) echo nios;;
189 powerpc*)
190 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
191 # have been unified into simply 'powerpc', but until 2.6.16,
192 # ppc32 is still using ARCH="ppc" as default
193 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
194 echo powerpc
195 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
196 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
197 echo powerpc
198 else
199 echo ppc
200 fi
201 elif [[ ${host} == powerpc64* ]] ; then
202 echo ppc64
203 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
204 ninj ppc64 ppc
205 else
206 echo ppc
207 fi
208 ;;
209 s390*) echo s390;;
210 sh64*) ninj sh64 sh;;
211 sh*) echo sh;;
212 sparc64*) ninj sparc64 sparc;;
213 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
214 && ninj sparc64 sparc \
215 || echo sparc
216 ;;
217 vax*) echo vax;;
218 x86_64*)
219 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
220 # trees have been unified into 'x86'.
221 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
222 echo x86
223 else
224 ninj x86_64 amd64
225 fi
226 ;;
227
228 # since our usage of tc-arch is largely concerned with
229 # normalizing inputs for testing ${CTARGET}, let's filter
230 # other cross targets (mingw and such) into the unknown.
231 *) echo unknown;;
232 esac
233}
234# @FUNCTION: tc-arch-kernel
235# @USAGE: [toolchain prefix]
236# @RETURN: name of the kernel arch according to the compiler target
237tc-arch-kernel() {
238 tc-ninja_magic_to_arch kern "$@"
239}
240# @FUNCTION: tc-arch
241# @USAGE: [toolchain prefix]
242# @RETURN: name of the portage arch according to the compiler target
243tc-arch() {
244 tc-ninja_magic_to_arch portage "$@"
245}
246
247tc-endian() {
248 local host=$1
249 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
250 host=${host%%-*}
251
252 case ${host} in
253 alpha*) echo big;;
254 arm*b*) echo big;;
255 arm*) echo little;;
256 cris*) echo little;;
257 hppa*) echo big;;
258 i?86*) echo little;;
259 ia64*) echo little;;
260 m68*) echo big;;
261 mips*l*) echo little;;
262 mips*) echo big;;
263 powerpc*) echo big;;
264 s390*) echo big;;
265 sh*b*) echo big;;
266 sh*) echo little;;
267 sparc*) echo big;;
268 x86_64*) echo little;;
269 *) echo wtf;;
270 esac
271}
272
273# @FUNCTION: gcc-fullversion
274# @RETURN: compiler version (major.minor.micro: [3.4.6])
275gcc-fullversion() {
276 $(tc-getCC "$@") -dumpversion
277}
278# @FUNCTION: gcc-version
279# @RETURN: compiler version (major.minor: [3.4].6)
280gcc-version() {
281 gcc-fullversion "$@" | cut -f1,2 -d.
282}
283# @FUNCTION: gcc-major-version
284# @RETURN: major compiler version (major: [3].4.6)
285gcc-major-version() {
286 gcc-version "$@" | cut -f1 -d.
287}
288# @FUNCTION: gcc-minor-version
289# @RETURN: minor compiler version (minor: 3.[4].6)
290gcc-minor-version() {
291 gcc-version "$@" | cut -f2 -d.
292}
293# @FUNCTION: gcc-micro-version
294# @RETURN: micro compiler version (micro: 3.4.[6])
295gcc-micro-version() {
296 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
297}
298
299# Returns the installation directory - internal toolchain
300# function for use by _gcc-specs-exists (for flag-o-matic).
301_gcc-install-dir() {
302 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
303 awk '$1=="install:" {print $2}')"
304}
305# Returns true if the indicated specs file exists - internal toolchain
306# function for use by flag-o-matic.
307_gcc-specs-exists() {
308 [[ -f $(_gcc-install-dir)/$1 ]]
309}
310
311# Returns requested gcc specs directive unprocessed - for used by
312# gcc-specs-directive()
313# Note; later specs normally overwrite earlier ones; however if a later
314# spec starts with '+' then it appends.
315# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
316# as "Reading <file>", in order. Strictly speaking, if there's a
317# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
318# the same token anything from 'gcc -dumpspecs' is overridden by
319# the contents of $(gcc_install_dir)/specs so the result is the
320# same either way.
321_gcc-specs-directive_raw() {
322 local cc=$(tc-getCC)
323 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
324 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
325'BEGIN { pspec=""; spec=""; outside=1 }
326$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
327 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
328 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
329 { spec=spec $0 }
330END { print spec }'
331 return 0
332}
333
334# Return the requested gcc specs directive, with all included
335# specs expanded.
336# Note, it does not check for inclusion loops, which cause it
337# to never finish - but such loops are invalid for gcc and we're
338# assuming gcc is operational.
339gcc-specs-directive() {
340 local directive subdname subdirective
341 directive="$(_gcc-specs-directive_raw $1)"
342 while [[ ${directive} == *%\(*\)* ]]; do
343 subdname=${directive/*%\(}
344 subdname=${subdname/\)*}
345 subdirective="$(_gcc-specs-directive_raw ${subdname})"
346 directive="${directive//\%(${subdname})/${subdirective}}"
347 done
348 echo "${directive}"
349 return 0
350}
351
352# Returns true if gcc sets relro
353gcc-specs-relro() {
354 local directive
355 directive=$(gcc-specs-directive link_command)
356 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
357}
358# Returns true if gcc sets now
359gcc-specs-now() {
360 local directive
361 directive=$(gcc-specs-directive link_command)
362 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
363}
364# Returns true if gcc builds PIEs
365gcc-specs-pie() {
366 local directive
367 directive=$(gcc-specs-directive cc1)
368 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
369}
370# Returns true if gcc builds with the stack protector
371gcc-specs-ssp() {
372 local directive
373 directive=$(gcc-specs-directive cc1)
374 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
375}
376# Returns true if gcc upgrades fstack-protector to fstack-protector-all
377gcc-specs-ssp-to-all() {
378 local directive
379 directive=$(gcc-specs-directive cc1)
380 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
381}
382# Returns true if gcc builds with fno-strict-overflow
383gcc-specs-nostrict() {
384 local directive
385 directive=$(gcc-specs-directive cc1)
386 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
387}
388
389
390# @FUNCTION: gen_usr_ldscript
391# @USAGE: [-a] <list of libs to create linker scripts for>
392# @DESCRIPTION:
393# This function generate linker scripts in /usr/lib for dynamic
394# libs in /lib. This is to fix linking problems when you have
395# the .so in /lib, and the .a in /usr/lib. What happens is that
396# in some cases when linking dynamic, the .a in /usr/lib is used
397# instead of the .so in /lib due to gcc/libtool tweaking ld's
398# library search path. This causes many builds to fail.
399# See bug #4411 for more info.
400#
401# Note that you should in general use the unversioned name of
402# the library (libfoo.so), as ldconfig should usually update it
403# correctly to point to the latest version of the library present.
404gen_usr_ldscript() {
405 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
406 # Just make sure it exists
407 dodir /usr/${libdir}
408
409 if [[ $1 == "-a" ]] ; then
410 auto=true
411 shift
412 dodir /${libdir}
38 fi 413 fi
39 export ${var}="${prog}"
40 echo "${!var}"
41}
42 414
43# Returns the name of the archiver 415 # OUTPUT_FORMAT gives hints to the linker as to what binary format
44tc-getAR() { tc-getPROG AR ar; } 416 # is referenced ... makes multilib saner
45# Returns the name of the assembler 417 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
46tc-getAS() { tc-getPROG AS as; } 418 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
47# Returns the name of the C compiler
48tc-getCC() { tc-getPROG CC gcc; }
49# Returns the name of the C++ compiler
50tc-getCXX() { tc-getPROG CXX g++; }
51# Returns the name of the linker
52tc-getLD() { tc-getPROG LD ld; }
53# Returns the name of the symbol/object thingy
54tc-getNM() { tc-getPROG NM nm; }
55# Returns the name of the archiver indexer
56tc-getRANLIB() { tc-getPROG RANLIB ranlib; }
57 419
58# Returns the name of the C compiler for build 420 for lib in "$@" ; do
59tc-getBUILD_CC() { 421 if [[ ${USERLAND} == "Darwin" ]] ; then
60 if [ -n "${CC_FOR_BUILD}" ] ; then 422 ewarn "Not creating fake dynamic library for $lib on Darwin;"
61 echo "${CC_FOR_BUILD}" 423 ewarn "making a symlink instead."
62 return 0 424 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
425 else
426 local tlib
427 if ${auto} ; then
428 lib="lib${lib}${suffix}"
429 tlib=$(scanelf -qF'%S#F' "${D}"/usr/${libdir}/${lib})
430 mv "${D}"/usr/${libdir}/${lib}* "${D}"/${libdir}/ || die
431 # some SONAMEs are funky: they encode a version before the .so
432 if [[ ${tlib} != ${lib}* ]] ; then
433 mv "${D}"/usr/${libdir}/${tlib}* "${D}"/${libdir}/ || die
434 fi
435 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
436 rm -f "${D}"/${libdir}/${lib}
437 else
438 tlib=${lib}
63 fi 439 fi
440 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
441 /* GNU ld script
442 Since Gentoo has critical dynamic libraries in /lib, and the static versions
443 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
444 run into linking problems. This "fake" dynamic lib is a linker script that
445 redirects the linker to the real lib. And yes, this works in the cross-
446 compiling scenario as the sysroot-ed linker will prepend the real path.
64 447
65 if [ -n "${CBUILD}" ] ; then 448 See bug http://bugs.gentoo.org/4411 for more info.
66 local cc="$(type -p "${CBUILD}-gcc")" 449 */
67 if [ -n "${cc}" ] ; then 450 ${output_format}
68 echo "${cc}" 451 GROUP ( /${libdir}/${tlib} )
452 END_LDSCRIPT
453 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
69 fi 454 fi
70 fi 455 done
71
72 echo "gcc"
73} 456}
74
75
76# Returns the version as by `$CC -dumpversion`
77gcc-fullversion() {
78 echo "$($(tc-getCC) -dumpversion)"
79}
80# Returns the version, but only the <major>.<minor>
81gcc-version() {
82 echo "$(gcc-fullversion | cut -f1,2 -d.)"
83}
84# Returns the Major version
85gcc-major-version() {
86 echo "$(gcc-version | cut -f1 -d.)"
87}
88# Returns the Minor version
89gcc-minor-version() {
90 echo "$(gcc-version | cut -f2 -d.)"
91}
92# Returns the Micro version
93gcc-micro-version() {
94 echo "$(gcc-fullversion | cut -f3 -d.)"
95}
Legend:
Removed from v.1.5  
changed lines
  Added in v.1.90
  ViewVC Help
Powered by ViewVC 1.1.13