/[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 1.65 Revision 1.99
1# Copyright 1999-2006 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 1.65 2007/02/12 05:01:09 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.99 2010/04/22 18:28:11 armin76 Exp $
4# 4
5# @ECLASS: toolchain-funcs.eclass
6# @MAINTAINER:
5# Author: Toolchain Ninjas <toolchain@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 multilib 16___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
17[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
11 18
12DESCRIPTION="Based on the ${ECLASS} eclass" 19DESCRIPTION="Based on the ${ECLASS} eclass"
13 20
14tc-getPROG() { 21tc-getPROG() {
15 local var=$1 22 local var=$1
27 34
28 export ${var}=${prog} 35 export ${var}=${prog}
29 echo "${!var}" 36 echo "${!var}"
30} 37}
31 38
32# Returns the name of the archiver 39# @FUNCTION: tc-getAR
40# @USAGE: [toolchain prefix]
41# @RETURN: name of the archiver
33tc-getAR() { tc-getPROG AR ar "$@"; } 42tc-getAR() { tc-getPROG AR ar "$@"; }
34# Returns the name of the assembler 43# @FUNCTION: tc-getAS
44# @USAGE: [toolchain prefix]
45# @RETURN: name of the assembler
35tc-getAS() { tc-getPROG AS as "$@"; } 46tc-getAS() { tc-getPROG AS as "$@"; }
47# @FUNCTION: tc-getCC
48# @USAGE: [toolchain prefix]
36# Returns the name of the C compiler 49# @RETURN: name of the C compiler
37tc-getCC() { tc-getPROG CC gcc "$@"; } 50tc-getCC() { tc-getPROG CC gcc "$@"; }
51# @FUNCTION: tc-getCPP
52# @USAGE: [toolchain prefix]
38# Returns the name of the C preprocessor 53# @RETURN: name of the C preprocessor
39tc-getCPP() { tc-getPROG CPP cpp "$@"; } 54tc-getCPP() { tc-getPROG CPP cpp "$@"; }
55# @FUNCTION: tc-getCXX
56# @USAGE: [toolchain prefix]
40# Returns the name of the C++ compiler 57# @RETURN: name of the C++ compiler
41tc-getCXX() { tc-getPROG CXX g++ "$@"; } 58tc-getCXX() { tc-getPROG CXX g++ "$@"; }
42# Returns the name of the linker 59# @FUNCTION: tc-getLD
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the linker
43tc-getLD() { tc-getPROG LD ld "$@"; } 62tc-getLD() { tc-getPROG LD ld "$@"; }
44# Returns the name of the strip prog 63# @FUNCTION: tc-getSTRIP
64# @USAGE: [toolchain prefix]
65# @RETURN: name of the strip program
45tc-getSTRIP() { tc-getPROG STRIP strip "$@"; } 66tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
67# @FUNCTION: tc-getNM
68# @USAGE: [toolchain prefix]
46# Returns the name of the symbol/object thingy 69# @RETURN: name of the symbol/object thingy
47tc-getNM() { tc-getPROG NM nm "$@"; } 70tc-getNM() { tc-getPROG NM nm "$@"; }
71# @FUNCTION: tc-getRANLIB
72# @USAGE: [toolchain prefix]
48# Returns the name of the archiver indexer 73# @RETURN: name of the archiver indexer
49tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; } 74tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
75# @FUNCTION: tc-getOBJCOPY
76# @USAGE: [toolchain prefix]
77# @RETURN: name of the object copier
78tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
79# @FUNCTION: tc-getF77
80# @USAGE: [toolchain prefix]
50# Returns the name of the fortran 77 compiler 81# @RETURN: name of the Fortran 77 compiler
51tc-getF77() { tc-getPROG F77 f77 "$@"; } 82tc-getF77() { tc-getPROG F77 f77 "$@"; }
83# @FUNCTION: tc-getFC
84# @USAGE: [toolchain prefix]
52# Returns the name of the fortran 90 compiler 85# @RETURN: name of the Fortran 90 compiler
53tc-getF90() { tc-getPROG F90 gfortran "$@"; } 86tc-getFC() { tc-getPROG FC gfortran "$@"; }
54# Returns the name of the fortran compiler 87# @FUNCTION: tc-getGCJ
55tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; } 88# @USAGE: [toolchain prefix]
56# Returns the name of the java compiler 89# @RETURN: name of the java compiler
57tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
91# @FUNCTION: tc-getPKG_CONFIG
92# @USAGE: [toolchain prefix]
93# @RETURN: name of the pkg-config tool
94tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
95# @FUNCTION: tc-getRC
96# @USAGE: [toolchain prefix]
97# @RETURN: name of the Windows resource compiler
98tc-getRC() { tc-getPROG RC windres "$@"; }
99# @FUNCTION: tc-getDLLWRAP
100# @USAGE: [toolchain prefix]
101# @RETURN: name of the Windows dllwrap utility
102tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
58 103
59# Returns the name of the C compiler for build 104# @FUNCTION: tc-getBUILD_CC
105# @USAGE: [toolchain prefix]
106# @RETURN: name of the C compiler for building binaries to run on the build machine
60tc-getBUILD_CC() { 107tc-getBUILD_CC() {
61 local v 108 local v
62 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do 109 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
63 if [[ -n ${!v} ]] ; then 110 if [[ -n ${!v} ]] ; then
64 export BUILD_CC=${!v} 111 export BUILD_CC=${!v}
76 123
77 export BUILD_CC=${search} 124 export BUILD_CC=${search}
78 echo "${search}" 125 echo "${search}"
79} 126}
80 127
128# @FUNCTION: tc-export
129# @USAGE: <list of toolchain variables>
130# @DESCRIPTION:
81# Quick way to export a bunch of vars at once 131# Quick way to export a bunch of compiler vars at once.
82tc-export() { 132tc-export() {
83 local var 133 local var
84 for var in "$@" ; do 134 for var in "$@" ; do
135 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
85 eval tc-get${var} > /dev/null 136 eval tc-get${var} > /dev/null
86 done 137 done
87} 138}
88 139
89# A simple way to see if we're using a cross-compiler ... 140# @FUNCTION: tc-is-cross-compiler
141# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
90tc-is-cross-compiler() { 142tc-is-cross-compiler() {
91 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 143 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
92} 144}
93 145
146# @FUNCTION: tc-is-softfloat
147# @DESCRIPTION:
94# See if this toolchain is a softfloat based one. 148# See if this toolchain is a softfloat based one.
149# @CODE
95# The possible return values: 150# The possible return values:
96# - only: the target is always softfloat (never had fpu) 151# - only: the target is always softfloat (never had fpu)
97# - yes: the target should support softfloat 152# - yes: the target should support softfloat
98# - no: the target should support hardfloat 153# - no: the target doesn't support softfloat
154# @CODE
99# This allows us to react differently where packages accept 155# This allows us to react differently where packages accept
100# softfloat flags in the case where support is optional, but 156# softfloat flags in the case where support is optional, but
101# rejects softfloat flags where the target always lacks an fpu. 157# rejects softfloat flags where the target always lacks an fpu.
102tc-is-softfloat() { 158tc-is-softfloat() {
103 case ${CTARGET} in 159 case ${CTARGET} in
104 h8300*) 160 bfin*|h8300*)
105 echo "only" ;; 161 echo "only" ;;
106 *) 162 *)
107 [[ ${CTARGET//_/-} == *-softfloat-* ]] \ 163 [[ ${CTARGET//_/-} == *-softfloat-* ]] \
108 && echo "yes" \ 164 && echo "yes" \
109 || echo "no" 165 || echo "no"
110 ;; 166 ;;
111 esac 167 esac
112} 168}
113 169
170# @FUNCTION: tc-is-hardfloat
171# @DESCRIPTION:
172# See if this toolchain is a hardfloat based one.
173# @CODE
174# The possible return values:
175# - yes: the target should support hardfloat
176# - no: the target doesn't support hardfloat
177tc-is-hardfloat() {
178 [[ ${CTARGET//_/-} == *-hardfloat-* ]] \
179 && echo "yes" \
180 || echo "no"
181}
182
183# @FUNCTION: tc-is-static-only
184# @DESCRIPTION:
185# Return shell true if the target does not support shared libs, shell false
186# otherwise.
187tc-is-static-only() {
188 local host=${CTARGET:-${CHOST}}
189
190 # *MiNT doesn't have shared libraries, only platform so far
191 return $([[ ${host} == *-mint* ]])
192}
193
194# @FUNCTION: tc-has-tls
195# @USAGE: [-s|-c|-l] [toolchain prefix]
196# @DESCRIPTION:
197# See if the toolchain supports thread local storage (TLS). Use -s to test the
198# compiler, -c to also test the assembler, and -l to also test the C library
199# (the default).
200tc-has-tls() {
201 local base="${T}/test-tc-tls"
202 cat <<-EOF > "${base}.c"
203 int foo(int *i) {
204 static __thread int j = 0;
205 return *i ? j : *i;
206 }
207 EOF
208 local flags
209 case $1 in
210 -s) flags="-S";;
211 -c) flags="-c";;
212 -l) ;;
213 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
214 esac
215 : ${flags:=-fPIC -shared -Wl,-z,defs}
216 [[ $1 == -* ]] && shift
217 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
218 local ret=$?
219 rm -f "${base}"*
220 return ${ret}
221}
222
223
114# Parse information from CBUILD/CHOST/CTARGET rather than 224# Parse information from CBUILD/CHOST/CTARGET rather than
115# use external variables from the profile. 225# use external variables from the profile.
116tc-ninja_magic_to_arch() { 226tc-ninja_magic_to_arch() {
117ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 227ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
118 228
121 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 231 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
122 232
123 case ${host} in 233 case ${host} in
124 alpha*) echo alpha;; 234 alpha*) echo alpha;;
125 arm*) echo arm;; 235 arm*) echo arm;;
236 avr*) ninj avr32 avr;;
126 bfin*) ninj blackfin bfin;; 237 bfin*) ninj blackfin bfin;;
127 cris*) echo cris;; 238 cris*) echo cris;;
128 hppa*) ninj parisc hppa;; 239 hppa*) ninj parisc hppa;;
129 i?86*) ninj i386 x86;; 240 i?86*)
241 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
242 # trees have been unified into 'x86'.
243 # FreeBSD still uses i386
244 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
245 echo i386
246 else
247 echo x86
248 fi
249 ;;
130 ia64*) echo ia64;; 250 ia64*) echo ia64;;
131 m68*) echo m68k;; 251 m68*) echo m68k;;
132 mips*) echo mips;; 252 mips*) echo mips;;
133 nios2*) echo nios2;; 253 nios2*) echo nios2;;
134 nios*) echo nios;; 254 nios*) echo nios;;
159 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 279 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
160 && ninj sparc64 sparc \ 280 && ninj sparc64 sparc \
161 || echo sparc 281 || echo sparc
162 ;; 282 ;;
163 vax*) echo vax;; 283 vax*) echo vax;;
164 x86_64*) ninj x86_64 amd64;; 284 x86_64*)
165 *) echo ${ARCH};; 285 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
286 # trees have been unified into 'x86'.
287 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
288 echo x86
289 else
290 ninj x86_64 amd64
291 fi
292 ;;
293
294 # since our usage of tc-arch is largely concerned with
295 # normalizing inputs for testing ${CTARGET}, let's filter
296 # other cross targets (mingw and such) into the unknown.
297 *) echo unknown;;
166 esac 298 esac
167} 299}
300# @FUNCTION: tc-arch-kernel
301# @USAGE: [toolchain prefix]
302# @RETURN: name of the kernel arch according to the compiler target
168tc-arch-kernel() { 303tc-arch-kernel() {
169 tc-ninja_magic_to_arch kern $@ 304 tc-ninja_magic_to_arch kern "$@"
170} 305}
306# @FUNCTION: tc-arch
307# @USAGE: [toolchain prefix]
308# @RETURN: name of the portage arch according to the compiler target
171tc-arch() { 309tc-arch() {
172 tc-ninja_magic_to_arch portage $@ 310 tc-ninja_magic_to_arch portage "$@"
173} 311}
174 312
175# Returns the version as by `$CC -dumpversion` 313tc-endian() {
314 local host=$1
315 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
316 host=${host%%-*}
317
318 case ${host} in
319 alpha*) echo big;;
320 arm*b*) echo big;;
321 arm*) echo little;;
322 cris*) echo little;;
323 hppa*) echo big;;
324 i?86*) echo little;;
325 ia64*) echo little;;
326 m68*) echo big;;
327 mips*l*) echo little;;
328 mips*) echo big;;
329 powerpc*) echo big;;
330 s390*) echo big;;
331 sh*b*) echo big;;
332 sh*) echo little;;
333 sparc*) echo big;;
334 x86_64*) echo little;;
335 *) echo wtf;;
336 esac
337}
338
339# @FUNCTION: gcc-fullversion
340# @RETURN: compiler version (major.minor.micro: [3.4.6])
176gcc-fullversion() { 341gcc-fullversion() {
177 $(tc-getCC "$@") -dumpversion 342 $(tc-getCC "$@") -dumpversion
178} 343}
179# Returns the version, but only the <major>.<minor> 344# @FUNCTION: gcc-version
345# @RETURN: compiler version (major.minor: [3.4].6)
180gcc-version() { 346gcc-version() {
181 gcc-fullversion "$@" | cut -f1,2 -d. 347 gcc-fullversion "$@" | cut -f1,2 -d.
182} 348}
183# Returns the Major version 349# @FUNCTION: gcc-major-version
350# @RETURN: major compiler version (major: [3].4.6)
184gcc-major-version() { 351gcc-major-version() {
185 gcc-version "$@" | cut -f1 -d. 352 gcc-version "$@" | cut -f1 -d.
186} 353}
187# Returns the Minor version 354# @FUNCTION: gcc-minor-version
355# @RETURN: minor compiler version (minor: 3.[4].6)
188gcc-minor-version() { 356gcc-minor-version() {
189 gcc-version "$@" | cut -f2 -d. 357 gcc-version "$@" | cut -f2 -d.
190} 358}
191# Returns the Micro version 359# @FUNCTION: gcc-micro-version
360# @RETURN: micro compiler version (micro: 3.4.[6])
192gcc-micro-version() { 361gcc-micro-version() {
193 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d- 362 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
194} 363}
195 364
365# Returns the installation directory - internal toolchain
366# function for use by _gcc-specs-exists (for flag-o-matic).
367_gcc-install-dir() {
368 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
369 awk '$1=="install:" {print $2}')"
370}
371# Returns true if the indicated specs file exists - internal toolchain
372# function for use by flag-o-matic.
373_gcc-specs-exists() {
374 [[ -f $(_gcc-install-dir)/$1 ]]
375}
376
196# Returns requested gcc specs directive 377# Returns requested gcc specs directive unprocessed - for used by
378# gcc-specs-directive()
197# Note; later specs normally overwrite earlier ones; however if a later 379# Note; later specs normally overwrite earlier ones; however if a later
198# spec starts with '+' then it appends. 380# spec starts with '+' then it appends.
199# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v" 381# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
200# as "Reading <file>", in order. 382# as "Reading <file>", in order. Strictly speaking, if there's a
383# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
384# the same token anything from 'gcc -dumpspecs' is overridden by
385# the contents of $(gcc_install_dir)/specs so the result is the
386# same either way.
201gcc-specs-directive() { 387_gcc-specs-directive_raw() {
202 local cc=$(tc-getCC) 388 local cc=$(tc-getCC)
203 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}') 389 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
204 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \ 390 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
205'BEGIN { pspec=""; spec=""; outside=1 } 391'BEGIN { pspec=""; spec=""; outside=1 }
206$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } 392$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
209 { spec=spec $0 } 395 { spec=spec $0 }
210END { print spec }' 396END { print spec }'
211 return 0 397 return 0
212} 398}
213 399
400# Return the requested gcc specs directive, with all included
401# specs expanded.
402# Note, it does not check for inclusion loops, which cause it
403# to never finish - but such loops are invalid for gcc and we're
404# assuming gcc is operational.
405gcc-specs-directive() {
406 local directive subdname subdirective
407 directive="$(_gcc-specs-directive_raw $1)"
408 while [[ ${directive} == *%\(*\)* ]]; do
409 subdname=${directive/*%\(}
410 subdname=${subdname/\)*}
411 subdirective="$(_gcc-specs-directive_raw ${subdname})"
412 directive="${directive//\%(${subdname})/${subdirective}}"
413 done
414 echo "${directive}"
415 return 0
416}
417
214# Returns true if gcc sets relro 418# Returns true if gcc sets relro
215gcc-specs-relro() { 419gcc-specs-relro() {
216 local directive 420 local directive
217 directive=$(gcc-specs-directive link_command) 421 directive=$(gcc-specs-directive link_command)
218 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 422 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
219} 423}
220# Returns true if gcc sets now 424# Returns true if gcc sets now
221gcc-specs-now() { 425gcc-specs-now() {
222 local directive 426 local directive
223 directive=$(gcc-specs-directive link_command) 427 directive=$(gcc-specs-directive link_command)
224 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 428 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
225} 429}
226# Returns true if gcc builds PIEs 430# Returns true if gcc builds PIEs
227gcc-specs-pie() { 431gcc-specs-pie() {
228 local directive 432 local directive
229 directive=$(gcc-specs-directive cc1) 433 directive=$(gcc-specs-directive cc1)
230 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 434 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
231} 435}
232# Returns true if gcc builds with the stack protector 436# Returns true if gcc builds with the stack protector
233gcc-specs-ssp() { 437gcc-specs-ssp() {
234 local directive 438 local directive
235 directive=$(gcc-specs-directive cc1) 439 directive=$(gcc-specs-directive cc1)
236 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 440 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
237} 441}
238# Returns true if gcc upgrades fstack-protector to fstack-protector-all 442# Returns true if gcc upgrades fstack-protector to fstack-protector-all
239gcc-specs-ssp-to-all() { 443gcc-specs-ssp-to-all() {
240 local directive 444 local directive
241 directive=$(gcc-specs-directive cc1) 445 directive=$(gcc-specs-directive cc1)
242 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 446 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
243} 447}
448# Returns true if gcc builds with fno-strict-overflow
449gcc-specs-nostrict() {
450 local directive
451 directive=$(gcc-specs-directive cc1)
452 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
453}
244 454
245 455
456# @FUNCTION: gen_usr_ldscript
457# @USAGE: [-a] <list of libs to create linker scripts for>
458# @DESCRIPTION:
246# This function generate linker scripts in /usr/lib for dynamic 459# This function generate linker scripts in /usr/lib for dynamic
247# libs in /lib. This is to fix linking problems when you have 460# libs in /lib. This is to fix linking problems when you have
248# the .so in /lib, and the .a in /usr/lib. What happens is that 461# the .so in /lib, and the .a in /usr/lib. What happens is that
249# in some cases when linking dynamic, the .a in /usr/lib is used 462# in some cases when linking dynamic, the .a in /usr/lib is used
250# instead of the .so in /lib due to gcc/libtool tweaking ld's 463# instead of the .so in /lib due to gcc/libtool tweaking ld's
251# library search path. This cause many builds to fail. 464# library search path. This causes many builds to fail.
252# See bug #4411 for more info. 465# See bug #4411 for more info.
253# 466#
254# To use, simply call:
255#
256# gen_usr_ldscript libfoo.so
257#
258# Note that you should in general use the unversioned name of 467# Note that you should in general use the unversioned name of
259# the library, as ldconfig should usually update it correctly 468# the library (libfoo.so), as ldconfig should usually update it
260# to point to the latest version of the library present. 469# correctly to point to the latest version of the library present.
261_tc_gen_usr_ldscript() { 470gen_usr_ldscript() {
262 local lib libdir=$(get_libdir) output_format="" 471 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
472 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
473
474 tc-is-static-only && return
475
263 # Just make sure it exists 476 # Just make sure it exists
264 dodir /usr/${libdir} 477 dodir /usr/${libdir}
478
479 if [[ $1 == "-a" ]] ; then
480 auto=true
481 shift
482 dodir /${libdir}
483 fi
265 484
266 # OUTPUT_FORMAT gives hints to the linker as to what binary format 485 # OUTPUT_FORMAT gives hints to the linker as to what binary format
267 # is referenced ... makes multilib saner 486 # is referenced ... makes multilib saner
268 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') 487 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
269 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" 488 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
270 489
271 for lib in "$@" ; do 490 for lib in "$@" ; do
272 if [[ ${USERLAND} == "Darwin" ]] ; then 491 local tlib
273 ewarn "Not creating fake dynamic library for $lib on Darwin;" 492 if ${auto} ; then
274 ewarn "making a symlink instead." 493 lib="lib${lib}${suffix}"
275 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
276 else 494 else
495 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
496 # This especially is for AIX where $(get_libname) can return ".a",
497 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
498 [[ -r ${ED}/${libdir}/${lib} ]] || continue
499 #TODO: better die here?
500 fi
501
502 case ${CTARGET:-${CHOST}} in
503 *-darwin*)
504 if ${auto} ; then
505 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
506 else
507 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
508 fi
509 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
510 tlib=${tlib##*/}
511
512 if ${auto} ; then
513 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
514 # some install_names are funky: they encode a version
515 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
516 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
517 fi
518 rm -f "${ED}"/${libdir}/${lib}
519 fi
520
521 # Mach-O files have an id, which is like a soname, it tells how
522 # another object linking against this lib should reference it.
523 # Since we moved the lib from usr/lib into lib this reference is
524 # wrong. Hence, we update it here. We don't configure with
525 # libdir=/lib because that messes up libtool files.
526 # Make sure we don't lose the specific version, so just modify the
527 # existing install_name
528 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
529 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
530 local nowrite=yes
531 fi
532 install_name_tool \
533 -id "${EPREFIX}"/${libdir}/${tlib} \
534 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
535 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
536 # Now as we don't use GNU binutils and our linker doesn't
537 # understand linker scripts, just create a symlink.
538 pushd "${ED}/usr/${libdir}" > /dev/null
539 ln -snf "../../${libdir}/${tlib}" "${lib}"
540 popd > /dev/null
541 ;;
542 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
543 if ${auto} ; then
544 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
545 # no way to retrieve soname on these platforms (?)
546 tlib=$(readlink "${ED}"/${libdir}/${lib})
547 tlib=${tlib##*/}
548 if [[ -z ${tlib} ]] ; then
549 # ok, apparently was not a symlink, don't remove it and
550 # just link to it
551 tlib=${lib}
552 else
553 rm -f "${ED}"/${libdir}/${lib}
554 fi
555 else
556 tlib=${lib}
557 fi
558
559 # we don't have GNU binutils on these platforms, so we symlink
560 # instead, which seems to work fine. Keep it relative, otherwise
561 # we break some QA checks in Portage
562 # on interix, the linker scripts would work fine in _most_
563 # situations. if a library links to such a linker script the
564 # absolute path to the correct library is inserted into the binary,
565 # which is wrong, since anybody linking _without_ libtool will miss
566 # some dependencies, since the stupid linker cannot find libraries
567 # hardcoded with absolute paths (as opposed to the loader, which
568 # seems to be able to do this).
569 # this has been seen while building shared-mime-info which needs
570 # libxml2, but links without libtool (and does not add libz to the
571 # command line by itself).
572 pushd "${ED}/usr/${libdir}" > /dev/null
573 ln -snf "../../${libdir}/${tlib}" "${lib}"
574 popd > /dev/null
575 ;;
576 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
577 if ${auto} ; then
578 tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
579 [[ -z ${tlib} ]] && tlib=${lib}
580 tlib=${tlib##*/} # 'internal name' can have a path component
581 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
582 # some SONAMEs are funky: they encode a version before the .so
583 if [[ ${tlib} != ${lib}* ]] ; then
584 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
585 fi
586 [[ ${tlib} != ${lib} ]] &&
587 rm -f "${ED}"/${libdir}/${lib}
588 else
589 tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
590 [[ -z ${tlib} ]] && tlib=${lib}
591 tlib=${tlib##*/} # 'internal name' can have a path component
592 fi
593 pushd "${ED}"/usr/${libdir} >/dev/null
594 ln -snf "../../${libdir}/${tlib}" "${lib}"
595 # need the internal name in usr/lib too, to be available at runtime
596 # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
597 [[ ${tlib} != ${lib} ]] &&
598 ln -snf "../../${libdir}/${tlib}" "${tlib}"
599 popd >/dev/null
600 ;;
601 *)
602 if ${auto} ; then
603 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
604 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
605 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
606 # some SONAMEs are funky: they encode a version before the .so
607 if [[ ${tlib} != ${lib}* ]] ; then
608 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
609 fi
610 rm -f "${ED}"/${libdir}/${lib}
611 else
612 tlib=${lib}
613 fi
277 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 614 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
278 /* GNU ld script 615 /* GNU ld script
279 Since Gentoo has critical dynamic libraries 616 Since Gentoo has critical dynamic libraries in /lib, and the static versions
280 in /lib, and the static versions in /usr/lib, 617 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
281 we need to have a "fake" dynamic lib in /usr/lib, 618 run into linking problems. This "fake" dynamic lib is a linker script that
282 otherwise we run into linking problems. 619 redirects the linker to the real lib. And yes, this works in the cross-
620 compiling scenario as the sysroot-ed linker will prepend the real path.
283 621
284 See bug http://bugs.gentoo.org/4411 for more info. 622 See bug http://bugs.gentoo.org/4411 for more info.
285 */ 623 */
286 ${output_format} 624 ${output_format}
287 GROUP ( /${libdir}/${lib} ) 625 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
288 END_LDSCRIPT 626 END_LDSCRIPT
289 fi 627 ;;
628 esac
290 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" 629 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
291 done 630 done
292} 631}
293gen_usr_ldscript() { _tc_gen_usr_ldscript "$@" ; }

Legend:
Removed from v.1.65  
changed lines
  Added in v.1.99

  ViewVC Help
Powered by ViewVC 1.1.20