/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2005 Gentoo Foundation 1# Copyright 1999-2012 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 1.45 2005/10/06 01:52:51 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.119 2012/09/28 15:07:30 axs 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.
15
16if [[ ${___ECLASS_ONCE_TOOLCHAIN_FUNCS} != "recur -_+^+_- spank" ]] ; then
17___ECLASS_ONCE_TOOLCHAIN_FUNCS="recur -_+^+_- spank"
9 18
10inherit multilib 19inherit multilib
11 20
12DESCRIPTION="Based on the ${ECLASS} eclass" 21# tc-getPROG <VAR [search vars]> <default> [tuple]
13
14tc-getPROG() { 22_tc-getPROG() {
15 local var=$1 23 local tuple=$1
24 local v var vars=$2
16 local prog=$2 25 local prog=$3
17 26
18 if [[ -n ${!var} ]] ; then 27 var=${vars%% *}
19 echo "${!var}" 28 for v in ${vars} ; do
20 return 0
21 fi
22
23 local search=
24 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
25 [[ -z ${search} && -n $(get_abi_CHOST) ]] && search=$(type -p "$(get_abi_CHOST)-${prog}")
26 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
27 [[ -n ${search} ]] && prog=${search##*/}
28
29 export ${var}=${prog}
30 echo "${!var}"
31}
32
33# Returns the name of the archiver
34tc-getAR() { tc-getPROG AR ar "$@"; }
35# Returns the name of the assembler
36tc-getAS() { tc-getPROG AS as "$@"; }
37# Returns the name of the C compiler
38tc-getCC() { tc-getPROG CC gcc "$@"; }
39# Returns the name of the C++ compiler
40tc-getCXX() { tc-getPROG CXX g++ "$@"; }
41# Returns the name of the linker
42tc-getLD() { tc-getPROG LD ld "$@"; }
43# Returns the name of the symbol/object thingy
44tc-getNM() { tc-getPROG NM nm "$@"; }
45# Returns the name of the archiver indexer
46tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
47# Returns the name of the fortran compiler
48tc-getF77() { tc-getPROG F77 f77 "$@"; }
49# Returns the name of the java compiler
50tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
51
52# Returns the name of the C compiler for build
53tc-getBUILD_CC() {
54 local v
55 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
56 if [[ -n ${!v} ]] ; then 29 if [[ -n ${!v} ]] ; then
57 export BUILD_CC=${!v} 30 export ${var}="${!v}"
58 echo "${!v}" 31 echo "${!v}"
59 return 0 32 return 0
60 fi 33 fi
61 done 34 done
62 35
63 local search= 36 local search=
64 if [[ -n ${CBUILD} ]] ; then 37 [[ -n $4 ]] && search=$(type -p "$4-${prog}")
65 search=$(type -p ${CBUILD}-gcc) 38 [[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}")
66 search=${search##*/} 39 [[ -n ${search} ]] && prog=${search##*/}
67 fi
68 search=${search:-gcc}
69 40
70 export BUILD_CC=${search} 41 export ${var}=${prog}
71 echo "${search}" 42 echo "${!var}"
72} 43}
44tc-getBUILD_PROG() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; }
45tc-getPROG() { _tc-getPROG CHOST "$@"; }
73 46
47# @FUNCTION: tc-getAR
48# @USAGE: [toolchain prefix]
49# @RETURN: name of the archiver
50tc-getAR() { tc-getPROG AR ar "$@"; }
51# @FUNCTION: tc-getAS
52# @USAGE: [toolchain prefix]
53# @RETURN: name of the assembler
54tc-getAS() { tc-getPROG AS as "$@"; }
55# @FUNCTION: tc-getCC
56# @USAGE: [toolchain prefix]
57# @RETURN: name of the C compiler
58tc-getCC() { tc-getPROG CC gcc "$@"; }
59# @FUNCTION: tc-getCPP
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the C preprocessor
62tc-getCPP() { tc-getPROG CPP cpp "$@"; }
63# @FUNCTION: tc-getCXX
64# @USAGE: [toolchain prefix]
65# @RETURN: name of the C++ compiler
66tc-getCXX() { tc-getPROG CXX g++ "$@"; }
67# @FUNCTION: tc-getLD
68# @USAGE: [toolchain prefix]
69# @RETURN: name of the linker
70tc-getLD() { tc-getPROG LD ld "$@"; }
71# @FUNCTION: tc-getSTRIP
72# @USAGE: [toolchain prefix]
73# @RETURN: name of the strip program
74tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
75# @FUNCTION: tc-getNM
76# @USAGE: [toolchain prefix]
77# @RETURN: name of the symbol/object thingy
78tc-getNM() { tc-getPROG NM nm "$@"; }
79# @FUNCTION: tc-getRANLIB
80# @USAGE: [toolchain prefix]
81# @RETURN: name of the archiver indexer
82tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
83# @FUNCTION: tc-getOBJCOPY
84# @USAGE: [toolchain prefix]
85# @RETURN: name of the object copier
86tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
87# @FUNCTION: tc-getF77
88# @USAGE: [toolchain prefix]
89# @RETURN: name of the Fortran 77 compiler
90tc-getF77() { tc-getPROG F77 gfortran "$@"; }
91# @FUNCTION: tc-getFC
92# @USAGE: [toolchain prefix]
93# @RETURN: name of the Fortran 90 compiler
94tc-getFC() { tc-getPROG FC gfortran "$@"; }
95# @FUNCTION: tc-getGCJ
96# @USAGE: [toolchain prefix]
97# @RETURN: name of the java compiler
98tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
99# @FUNCTION: tc-getPKG_CONFIG
100# @USAGE: [toolchain prefix]
101# @RETURN: name of the pkg-config tool
102tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
103# @FUNCTION: tc-getRC
104# @USAGE: [toolchain prefix]
105# @RETURN: name of the Windows resource compiler
106tc-getRC() { tc-getPROG RC windres "$@"; }
107# @FUNCTION: tc-getDLLWRAP
108# @USAGE: [toolchain prefix]
109# @RETURN: name of the Windows dllwrap utility
110tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
111
112# @FUNCTION: tc-getBUILD_AR
113# @USAGE: [toolchain prefix]
114# @RETURN: name of the archiver for building binaries to run on the build machine
115tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
116# @FUNCTION: tc-getBUILD_AS
117# @USAGE: [toolchain prefix]
118# @RETURN: name of the assembler for building binaries to run on the build machine
119tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
120# @FUNCTION: tc-getBUILD_CC
121# @USAGE: [toolchain prefix]
122# @RETURN: name of the C compiler for building binaries to run on the build machine
123tc-getBUILD_CC() { tc-getBUILD_PROG CC gcc "$@"; }
124# @FUNCTION: tc-getBUILD_CPP
125# @USAGE: [toolchain prefix]
126# @RETURN: name of the C preprocessor for building binaries to run on the build machine
127tc-getBUILD_CPP() { tc-getBUILD_PROG CPP cpp "$@"; }
128# @FUNCTION: tc-getBUILD_CXX
129# @USAGE: [toolchain prefix]
130# @RETURN: name of the C++ compiler for building binaries to run on the build machine
131tc-getBUILD_CXX() { tc-getBUILD_PROG CXX g++ "$@"; }
132# @FUNCTION: tc-getBUILD_LD
133# @USAGE: [toolchain prefix]
134# @RETURN: name of the linker for building binaries to run on the build machine
135tc-getBUILD_LD() { tc-getBUILD_PROG LD ld "$@"; }
136# @FUNCTION: tc-getBUILD_STRIP
137# @USAGE: [toolchain prefix]
138# @RETURN: name of the strip program for building binaries to run on the build machine
139tc-getBUILD_STRIP() { tc-getBUILD_PROG STRIP strip "$@"; }
140# @FUNCTION: tc-getBUILD_NM
141# @USAGE: [toolchain prefix]
142# @RETURN: name of the symbol/object thingy for building binaries to run on the build machine
143tc-getBUILD_NM() { tc-getBUILD_PROG NM nm "$@"; }
144# @FUNCTION: tc-getBUILD_RANLIB
145# @USAGE: [toolchain prefix]
146# @RETURN: name of the archiver indexer for building binaries to run on the build machine
147tc-getBUILD_RANLIB() { tc-getBUILD_PROG RANLIB ranlib "$@"; }
148# @FUNCTION: tc-getBUILD_OBJCOPY
149# @USAGE: [toolchain prefix]
150# @RETURN: name of the object copier for building binaries to run on the build machine
151tc-getBUILD_OBJCOPY() { tc-getBUILD_PROG OBJCOPY objcopy "$@"; }
152# @FUNCTION: tc-getBUILD_PKG_CONFIG
153# @USAGE: [toolchain prefix]
154# @RETURN: name of the pkg-config tool for building binaries to run on the build machine
155tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
156
157# @FUNCTION: tc-export
158# @USAGE: <list of toolchain variables>
159# @DESCRIPTION:
74# Quick way to export a bunch of vars at once 160# Quick way to export a bunch of compiler vars at once.
75tc-export() { 161tc-export() {
76 local var 162 local var
77 for var in "$@" ; do 163 for var in "$@" ; do
164 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
78 eval tc-get${var} > /dev/null 165 eval tc-get${var} > /dev/null
79 done 166 done
80} 167}
81 168
82# A simple way to see if we're using a cross-compiler ... 169# @FUNCTION: tc-is-cross-compiler
170# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
83tc-is-cross-compiler() { 171tc-is-cross-compiler() {
84 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 172 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
173}
174
175# @FUNCTION: tc-is-softfloat
176# @DESCRIPTION:
177# See if this toolchain is a softfloat based one.
178# @CODE
179# The possible return values:
180# - only: the target is always softfloat (never had fpu)
181# - yes: the target should support softfloat
182# - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
183# - no: the target doesn't support softfloat
184# @CODE
185# This allows us to react differently where packages accept
186# softfloat flags in the case where support is optional, but
187# rejects softfloat flags where the target always lacks an fpu.
188tc-is-softfloat() {
189 local CTARGET=${CTARGET:-${CHOST}}
190 case ${CTARGET} in
191 bfin*|h8300*)
192 echo "only" ;;
193 *)
194 if [[ ${CTARGET//_/-} == *-softfloat-* ]] ; then
195 echo "yes"
196 elif [[ ${CTARGET//_/-} == *-softfp-* ]] ; then
197 echo "softfp"
198 else
199 echo "no"
200 fi
201 ;;
202 esac
203}
204
205# @FUNCTION: tc-is-static-only
206# @DESCRIPTION:
207# Return shell true if the target does not support shared libs, shell false
208# otherwise.
209tc-is-static-only() {
210 local host=${CTARGET:-${CHOST}}
211
212 # *MiNT doesn't have shared libraries, only platform so far
213 return $([[ ${host} == *-mint* ]])
214}
215
216# @FUNCTION: tc-export_build_env
217# @USAGE: [compiler variables]
218# @DESCRIPTION:
219# Export common build related compiler settings.
220tc-export_build_env() {
221 tc-export "$@"
222 : ${BUILD_CFLAGS:=-O1 -pipe}
223 : ${BUILD_CXXFLAGS:=-O1 -pipe}
224 : ${BUILD_CPPFLAGS:=}
225 : ${BUILD_LDFLAGS:=}
226 export BUILD_{C,CXX,CPP,LD}FLAGS
227}
228
229# @FUNCTION: tc-env_build
230# @USAGE: <command> [command args]
231# @INTERNAL
232# @DESCRIPTION:
233# Setup the compile environment to the build tools and then execute the
234# specified command. We use tc-getBUILD_XX here so that we work with
235# all of the semi-[non-]standard env vars like $BUILD_CC which often
236# the target build system does not check.
237tc-env_build() {
238 tc-export_build_env
239 CFLAGS=${BUILD_CFLAGS} \
240 CXXFLAGS=${BUILD_CXXFLAGS} \
241 CPPFLAGS=${BUILD_CPPFLAGS} \
242 LDFLAGS=${BUILD_LDFLAGS} \
243 AR=$(tc-getBUILD_AR) \
244 AS=$(tc-getBUILD_AS) \
245 CC=$(tc-getBUILD_CC) \
246 CPP=$(tc-getBUILD_CPP) \
247 CXX=$(tc-getBUILD_CXX) \
248 LD=$(tc-getBUILD_LD) \
249 NM=$(tc-getBUILD_NM) \
250 PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
251 RANLIB=$(tc-getBUILD_RANLIB) \
252 "$@"
253}
254
255# @FUNCTION: econf_build
256# @USAGE: [econf flags]
257# @DESCRIPTION:
258# Sometimes we need to locally build up some tools to run on CBUILD because
259# the package has helper utils which are compiled+executed when compiling.
260# This won't work when cross-compiling as the CHOST is set to a target which
261# we cannot natively execute.
262#
263# For example, the python package will build up a local python binary using
264# a portable build system (configure+make), but then use that binary to run
265# local python scripts to build up other components of the overall python.
266# We cannot rely on the python binary in $PATH as that often times will be
267# a different version, or not even installed in the first place. Instead,
268# we compile the code in a different directory to run on CBUILD, and then
269# use that binary when compiling the main package to run on CHOST.
270#
271# For example, with newer EAPIs, you'd do something like:
272# @CODE
273# src_configure() {
274# ECONF_SOURCE=${S}
275# if tc-is-cross-compiler ; then
276# mkdir "${WORKDIR}"/${CBUILD}
277# pushd "${WORKDIR}"/${CBUILD} >/dev/null
278# econf_build --disable-some-unused-stuff
279# popd >/dev/null
280# fi
281# ... normal build paths ...
282# }
283# src_compile() {
284# if tc-is-cross-compiler ; then
285# pushd "${WORKDIR}"/${CBUILD} >/dev/null
286# emake one-or-two-build-tools
287# ln/mv build-tools to normal build paths in ${S}/
288# popd >/dev/null
289# fi
290# ... normal build paths ...
291# }
292# @CODE
293econf_build() {
294 tc-env_build econf --build=${CBUILD:-${CHOST}} "$@"
295}
296
297# @FUNCTION: tc-has-openmp
298# @USAGE: [toolchain prefix]
299# @DESCRIPTION:
300# See if the toolchain supports OpenMP.
301tc-has-openmp() {
302 local base="${T}/test-tc-openmp"
303 cat <<-EOF > "${base}.c"
304 #include <omp.h>
305 int main() {
306 int nthreads, tid, ret = 0;
307 #pragma omp parallel private(nthreads, tid)
308 {
309 tid = omp_get_thread_num();
310 nthreads = omp_get_num_threads(); ret += tid + nthreads;
311 }
312 return ret;
313 }
314 EOF
315 $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
316 local ret=$?
317 rm -f "${base}"*
318 return ${ret}
319}
320
321# @FUNCTION: tc-has-tls
322# @USAGE: [-s|-c|-l] [toolchain prefix]
323# @DESCRIPTION:
324# See if the toolchain supports thread local storage (TLS). Use -s to test the
325# compiler, -c to also test the assembler, and -l to also test the C library
326# (the default).
327tc-has-tls() {
328 local base="${T}/test-tc-tls"
329 cat <<-EOF > "${base}.c"
330 int foo(int *i) {
331 static __thread int j = 0;
332 return *i ? j : *i;
333 }
334 EOF
335 local flags
336 case $1 in
337 -s) flags="-S";;
338 -c) flags="-c";;
339 -l) ;;
340 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
341 esac
342 : ${flags:=-fPIC -shared -Wl,-z,defs}
343 [[ $1 == -* ]] && shift
344 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
345 local ret=$?
346 rm -f "${base}"*
347 return ${ret}
85} 348}
86 349
87 350
88# Parse information from CBUILD/CHOST/CTARGET rather than 351# Parse information from CBUILD/CHOST/CTARGET rather than
89# use external variables from the profile. 352# use external variables from the profile.
92 355
93 local type=$1 356 local type=$1
94 local host=$2 357 local host=$2
95 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 358 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
96 359
360 local KV=${KV:-${KV_FULL}}
361 [[ ${type} == "kern" ]] && [[ -z ${KV} ]] && \
362 ewarn "QA: Kernel version could not be determined, please inherit kernel-2 or linux-info"
363
97 case ${host} in 364 case ${host} in
365 aarch64*) ninj aarch64 arm;;
98 alpha*) echo alpha;; 366 alpha*) echo alpha;;
99 x86_64*) ninj x86_64 amd64;;
100 arm*) echo arm;; 367 arm*) echo arm;;
101 thumb*) echo arm;; 368 avr*) ninj avr32 avr;;
369 bfin*) ninj blackfin bfin;;
370 cris*) echo cris;;
102 hppa*) ninj parisc hppa;; 371 hppa*) ninj parisc hppa;;
372 i?86*)
373 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
374 # trees have been unified into 'x86'.
375 # FreeBSD still uses i386
376 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
377 echo i386
378 else
379 echo x86
380 fi
381 ;;
103 ia64*) echo ia64;; 382 ia64*) echo ia64;;
104 m68*) echo m68k;; 383 m68*) echo m68k;;
105 mips*) echo mips;; 384 mips*) echo mips;;
106 powerpc64*) echo ppc64;; 385 nios2*) echo nios2;;
107 powerpc*) [[ ${PROFILE_ARCH} == "ppc64" ]] \ 386 nios*) echo nios;;
108 && ninj ppc64 ppc \ 387 powerpc*)
388 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
389 # have been unified into simply 'powerpc', but until 2.6.16,
390 # ppc32 is still using ARCH="ppc" as default
391 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
392 echo powerpc
393 elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
394 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
395 echo powerpc
396 else
109 || echo ppc 397 echo ppc
398 fi
399 elif [[ ${host} == powerpc64* ]] ; then
400 echo ppc64
401 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
402 ninj ppc64 ppc
403 else
404 echo ppc
405 fi
110 ;; 406 ;;
407 s390*) echo s390;;
408 sh64*) ninj sh64 sh;;
409 sh*) echo sh;;
111 sparc64*) ninj sparc64 sparc;; 410 sparc64*) ninj sparc64 sparc;;
112 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 411 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
113 && ninj sparc64 sparc \ 412 && ninj sparc64 sparc \
114 || echo sparc 413 || echo sparc
115 ;; 414 ;;
116 s390*) echo s390;; 415 vax*) echo vax;;
117 sh64*) ninj sh64 sh;; 416 x86_64*freebsd*) echo amd64;;
118 sh*) echo sh;; 417 x86_64*)
119 i?86*) ninj i386 x86;; 418 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
120 *) echo ${ARCH};; 419 # trees have been unified into 'x86'.
420 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
421 echo x86
422 else
423 ninj x86_64 amd64
424 fi
425 ;;
426
427 # since our usage of tc-arch is largely concerned with
428 # normalizing inputs for testing ${CTARGET}, let's filter
429 # other cross targets (mingw and such) into the unknown.
430 *) echo unknown;;
121 esac 431 esac
122} 432}
433# @FUNCTION: tc-arch-kernel
434# @USAGE: [toolchain prefix]
435# @RETURN: name of the kernel arch according to the compiler target
123tc-arch-kernel() { 436tc-arch-kernel() {
124 tc-ninja_magic_to_arch kern $@ 437 tc-ninja_magic_to_arch kern "$@"
125} 438}
439# @FUNCTION: tc-arch
440# @USAGE: [toolchain prefix]
441# @RETURN: name of the portage arch according to the compiler target
126tc-arch() { 442tc-arch() {
127 tc-ninja_magic_to_arch portage $@ 443 tc-ninja_magic_to_arch portage "$@"
128} 444}
445
129tc-endian() { 446tc-endian() {
130 local host=$1 447 local host=$1
131 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 448 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
132 host=${host%%-*} 449 host=${host%%-*}
133 450
134 case ${host} in 451 case ${host} in
452 aarch64*be) echo big;;
453 aarch64) echo little;;
135 alpha*) echo big;; 454 alpha*) echo big;;
136 x86_64*) echo little;;
137 arm*b*) echo big;; 455 arm*b*) echo big;;
138 arm*) echo little;; 456 arm*) echo little;;
139 thumb*) echo little;; 457 cris*) echo little;;
140 hppa*) echo big;; 458 hppa*) echo big;;
459 i?86*) echo little;;
141 ia64*) echo little;; 460 ia64*) echo little;;
142 m68*) echo big;; 461 m68*) echo big;;
143 mips*l*) echo little;; 462 mips*l*) echo little;;
144 mips*) echo big;; 463 mips*) echo big;;
145 powerpc*) echo big;; 464 powerpc*) echo big;;
146 sparc*) echo big;;
147 s390*) echo big;; 465 s390*) echo big;;
148 sh*b*) echo big;; 466 sh*b*) echo big;;
149 sh*) echo little;; 467 sh*) echo little;;
468 sparc*) echo big;;
150 i?86*) echo little;; 469 x86_64*) echo little;;
151 *) echo wtf;; 470 *) echo wtf;;
152 esac 471 esac
153} 472}
154 473
155# Returns the version as by `$CC -dumpversion` 474# Internal func. The first argument is the version info to expand.
475# Query the preprocessor to improve compatibility across different
476# compilers rather than maintaining a --version flag matrix. #335943
477_gcc_fullversion() {
478 local ver="$1"; shift
479 set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
480 eval echo "$ver"
481}
482
483# @FUNCTION: gcc-fullversion
484# @RETURN: compiler version (major.minor.micro: [3.4.6])
156gcc-fullversion() { 485gcc-fullversion() {
157 echo "$($(tc-getCC) -dumpversion)" 486 _gcc_fullversion '$1.$2.$3' "$@"
158} 487}
159# Returns the version, but only the <major>.<minor> 488# @FUNCTION: gcc-version
489# @RETURN: compiler version (major.minor: [3.4].6)
160gcc-version() { 490gcc-version() {
161 echo "$(gcc-fullversion | cut -f1,2 -d.)" 491 _gcc_fullversion '$1.$2' "$@"
162} 492}
163# Returns the Major version 493# @FUNCTION: gcc-major-version
494# @RETURN: major compiler version (major: [3].4.6)
164gcc-major-version() { 495gcc-major-version() {
165 echo "$(gcc-version | cut -f1 -d.)" 496 _gcc_fullversion '$1' "$@"
166} 497}
167# Returns the Minor version 498# @FUNCTION: gcc-minor-version
499# @RETURN: minor compiler version (minor: 3.[4].6)
168gcc-minor-version() { 500gcc-minor-version() {
169 echo "$(gcc-version | cut -f2 -d.)" 501 _gcc_fullversion '$2' "$@"
170} 502}
171# Returns the Micro version 503# @FUNCTION: gcc-micro-version
504# @RETURN: micro compiler version (micro: 3.4.[6])
172gcc-micro-version() { 505gcc-micro-version() {
173 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 506 _gcc_fullversion '$3' "$@"
174} 507}
175 508
509# Returns the installation directory - internal toolchain
510# function for use by _gcc-specs-exists (for flag-o-matic).
511_gcc-install-dir() {
512 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
513 awk '$1=="install:" {print $2}')"
514}
515# Returns true if the indicated specs file exists - internal toolchain
516# function for use by flag-o-matic.
517_gcc-specs-exists() {
518 [[ -f $(_gcc-install-dir)/$1 ]]
519}
520
521# Returns requested gcc specs directive unprocessed - for used by
522# gcc-specs-directive()
523# Note; later specs normally overwrite earlier ones; however if a later
524# spec starts with '+' then it appends.
525# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
526# as "Reading <file>", in order. Strictly speaking, if there's a
527# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
528# the same token anything from 'gcc -dumpspecs' is overridden by
529# the contents of $(gcc_install_dir)/specs so the result is the
530# same either way.
531_gcc-specs-directive_raw() {
532 local cc=$(tc-getCC)
533 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
534 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
535'BEGIN { pspec=""; spec=""; outside=1 }
536$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
537 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
538 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
539 { spec=spec $0 }
540END { print spec }'
541 return 0
542}
543
176# Returns requested gcc specs directive 544# Return the requested gcc specs directive, with all included
177# Note; if a spec exists more than once (e.g. in more than one specs file) 545# specs expanded.
178# the last one read is the active definition - i.e. they do not accumulate, 546# Note, it does not check for inclusion loops, which cause it
179# each new definition replaces any previous definition. 547# to never finish - but such loops are invalid for gcc and we're
548# assuming gcc is operational.
180gcc-specs-directive() { 549gcc-specs-directive() {
181 local specfiles=$($(tc-getCC) -v 2>&1 | grep "^Reading" | awk '{print $NF}') 550 local directive subdname subdirective
182 [[ -z ${specfiles} ]] && return 0 551 directive="$(_gcc-specs-directive_raw $1)"
183 awk -v spec=$1 \ 552 while [[ ${directive} == *%\(*\)* ]]; do
184'BEGIN { sstr=""; outside=1 } 553 subdname=${directive/*%\(}
185 $1=="*"spec":" { sstr=""; outside=0; next } 554 subdname=${subdname/\)*}
186 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next } 555 subdirective="$(_gcc-specs-directive_raw ${subdname})"
187 { sstr=sstr $0 } 556 directive="${directive//\%(${subdname})/${subdirective}}"
188END { print sstr }' ${specfiles} 557 done
558 echo "${directive}"
559 return 0
189} 560}
190 561
191# Returns true if gcc sets relro 562# Returns true if gcc sets relro
192gcc-specs-relro() { 563gcc-specs-relro() {
193 local directive 564 local directive
194 directive=$(gcc-specs-directive link_command) 565 directive=$(gcc-specs-directive link_command)
195 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 566 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
196} 567}
197# Returns true if gcc sets now 568# Returns true if gcc sets now
198gcc-specs-now() { 569gcc-specs-now() {
199 local directive 570 local directive
200 directive=$(gcc-specs-directive link_command) 571 directive=$(gcc-specs-directive link_command)
201 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 572 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
202} 573}
203# Returns true if gcc builds PIEs 574# Returns true if gcc builds PIEs
204gcc-specs-pie() { 575gcc-specs-pie() {
205 local directive 576 local directive
206 directive=$(gcc-specs-directive cc1) 577 directive=$(gcc-specs-directive cc1)
207 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 578 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
208} 579}
209# Returns true if gcc builds with the stack protector 580# Returns true if gcc builds with the stack protector
210gcc-specs-ssp() { 581gcc-specs-ssp() {
211 local directive 582 local directive
212 directive=$(gcc-specs-directive cc1) 583 directive=$(gcc-specs-directive cc1)
213 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 584 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
214} 585}
586# Returns true if gcc upgrades fstack-protector to fstack-protector-all
587gcc-specs-ssp-to-all() {
588 local directive
589 directive=$(gcc-specs-directive cc1)
590 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
591}
592# Returns true if gcc builds with fno-strict-overflow
593gcc-specs-nostrict() {
594 local directive
595 directive=$(gcc-specs-directive cc1)
596 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
597}
598
599
600# @FUNCTION: gen_usr_ldscript
601# @USAGE: [-a] <list of libs to create linker scripts for>
602# @DESCRIPTION:
603# This function generate linker scripts in /usr/lib for dynamic
604# libs in /lib. This is to fix linking problems when you have
605# the .so in /lib, and the .a in /usr/lib. What happens is that
606# in some cases when linking dynamic, the .a in /usr/lib is used
607# instead of the .so in /lib due to gcc/libtool tweaking ld's
608# library search path. This causes many builds to fail.
609# See bug #4411 for more info.
610#
611# Note that you should in general use the unversioned name of
612# the library (libfoo.so), as ldconfig should usually update it
613# correctly to point to the latest version of the library present.
614gen_usr_ldscript() {
615 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
616 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
617
618 tc-is-static-only && return
619
620 # Eventually we'd like to get rid of this func completely #417451
621 case ${CTARGET:-${CHOST}} in
622 *-darwin*) ;;
623 *linux*|*-freebsd*|*-openbsd*|*-netbsd*)
624 use prefix && return 0 ;;
625 *) return 0 ;;
626 esac
627
628 # Just make sure it exists
629 dodir /usr/${libdir}
630
631 if [[ $1 == "-a" ]] ; then
632 auto=true
633 shift
634 dodir /${libdir}
635 fi
636
637 # OUTPUT_FORMAT gives hints to the linker as to what binary format
638 # is referenced ... makes multilib saner
639 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
640 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
641
642 for lib in "$@" ; do
643 local tlib
644 if ${auto} ; then
645 lib="lib${lib}${suffix}"
646 else
647 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
648 # This especially is for AIX where $(get_libname) can return ".a",
649 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
650 [[ -r ${ED}/${libdir}/${lib} ]] || continue
651 #TODO: better die here?
652 fi
653
654 case ${CTARGET:-${CHOST}} in
655 *-darwin*)
656 if ${auto} ; then
657 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
658 else
659 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
660 fi
661 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
662 tlib=${tlib##*/}
663
664 if ${auto} ; then
665 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
666 # some install_names are funky: they encode a version
667 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
668 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
669 fi
670 rm -f "${ED}"/${libdir}/${lib}
671 fi
672
673 # Mach-O files have an id, which is like a soname, it tells how
674 # another object linking against this lib should reference it.
675 # Since we moved the lib from usr/lib into lib this reference is
676 # wrong. Hence, we update it here. We don't configure with
677 # libdir=/lib because that messes up libtool files.
678 # Make sure we don't lose the specific version, so just modify the
679 # existing install_name
680 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
681 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
682 local nowrite=yes
683 fi
684 install_name_tool \
685 -id "${EPREFIX}"/${libdir}/${tlib} \
686 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
687 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
688 # Now as we don't use GNU binutils and our linker doesn't
689 # understand linker scripts, just create a symlink.
690 pushd "${ED}/usr/${libdir}" > /dev/null
691 ln -snf "../../${libdir}/${tlib}" "${lib}"
692 popd > /dev/null
693 ;;
694 *)
695 if ${auto} ; then
696 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
697 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
698 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
699 # some SONAMEs are funky: they encode a version before the .so
700 if [[ ${tlib} != ${lib}* ]] ; then
701 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
702 fi
703 rm -f "${ED}"/${libdir}/${lib}
704 else
705 tlib=${lib}
706 fi
707 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
708 /* GNU ld script
709 Since Gentoo has critical dynamic libraries in /lib, and the static versions
710 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
711 run into linking problems. This "fake" dynamic lib is a linker script that
712 redirects the linker to the real lib. And yes, this works in the cross-
713 compiling scenario as the sysroot-ed linker will prepend the real path.
714
715 See bug http://bugs.gentoo.org/4411 for more info.
716 */
717 ${output_format}
718 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
719 END_LDSCRIPT
720 ;;
721 esac
722 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
723 done
724}
725
726fi

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