/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2007 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 1.92 2009/08/15 15:11:17 grobian Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.100 2010/05/23 02:00:17 vapier Exp $
4 4
5# @ECLASS: toolchain-funcs.eclass 5# @ECLASS: toolchain-funcs.eclass
6# @MAINTAINER: 6# @MAINTAINER:
7# Toolchain Ninjas <toolchain@gentoo.org> 7# Toolchain Ninjas <toolchain@gentoo.org>
8# @BLURB: functions to query common info about the toolchain 8# @BLURB: functions to query common info about the toolchain
86tc-getFC() { tc-getPROG FC gfortran "$@"; } 86tc-getFC() { tc-getPROG FC gfortran "$@"; }
87# @FUNCTION: tc-getGCJ 87# @FUNCTION: tc-getGCJ
88# @USAGE: [toolchain prefix] 88# @USAGE: [toolchain prefix]
89# @RETURN: name of the java compiler 89# @RETURN: name of the java compiler
90tc-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 "$@"; }
91 103
92# @FUNCTION: tc-getBUILD_CC 104# @FUNCTION: tc-getBUILD_CC
93# @USAGE: [toolchain prefix] 105# @USAGE: [toolchain prefix]
94# @RETURN: name of the C compiler for building binaries to run on the build machine 106# @RETURN: name of the C compiler for building binaries to run on the build machine
95tc-getBUILD_CC() { 107tc-getBUILD_CC() {
136# See if this toolchain is a softfloat based one. 148# See if this toolchain is a softfloat based one.
137# @CODE 149# @CODE
138# The possible return values: 150# The possible return values:
139# - only: the target is always softfloat (never had fpu) 151# - only: the target is always softfloat (never had fpu)
140# - yes: the target should support softfloat 152# - yes: the target should support softfloat
141# - no: the target should support hardfloat 153# - no: the target doesn't support softfloat
142# @CODE 154# @CODE
143# This allows us to react differently where packages accept 155# This allows us to react differently where packages accept
144# softfloat flags in the case where support is optional, but 156# softfloat flags in the case where support is optional, but
145# rejects softfloat flags where the target always lacks an fpu. 157# rejects softfloat flags where the target always lacks an fpu.
146tc-is-softfloat() { 158tc-is-softfloat() {
153 || echo "no" 165 || echo "no"
154 ;; 166 ;;
155 esac 167 esac
156} 168}
157 169
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 [[ ${CTARGET//_/-} == *-hardfloat-* ]] \
179 && echo "yes" \
180 || echo "no"
181}
182
158# @FUNCTION: tc-is-static-only 183# @FUNCTION: tc-is-static-only
159# @DESCRIPTION: 184# @DESCRIPTION:
160# Return shell true if the target does not support shared libs, shell false 185# Return shell true if the target does not support shared libs, shell false
161# otherwise. 186# otherwise.
162tc-is-static-only() { 187tc-is-static-only() {
163 local host=${CTARGET:-${CHOST}} 188 local host=${CTARGET:-${CHOST}}
164 189
165 # *MiNT doesn't have shared libraries, only platform so far 190 # *MiNT doesn't have shared libraries, only platform so far
166 return $([[ ${host} == *-mint* ]]) 191 return $([[ ${host} == *-mint* ]])
192}
193
194# @FUNCTION: tc-has-openmp
195# @USAGE: [toolchain prefix]
196# @DESCRIPTION:
197# See if the toolchain supports OpenMP.
198tc-has-openmp() {
199 local base="${T}/test-tc-openmp"
200 cat <<-EOF > "${base}.c"
201 #include <omp.h>
202 int main() {
203 int nthreads, tid, ret = 0;
204 #pragma omp parallel private(nthreads, tid)
205 {
206 tid = omp_get_thread_num();
207 nthreads = omp_get_num_threads(); ret += tid + nthreads;
208 }
209 return ret;
210 }
211 EOF
212 $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
213 local ret=$?
214 rm -f "${base}"*
215 return ${ret}
216}
217
218# @FUNCTION: tc-has-tls
219# @USAGE: [-s|-c|-l] [toolchain prefix]
220# @DESCRIPTION:
221# See if the toolchain supports thread local storage (TLS). Use -s to test the
222# compiler, -c to also test the assembler, and -l to also test the C library
223# (the default).
224tc-has-tls() {
225 local base="${T}/test-tc-tls"
226 cat <<-EOF > "${base}.c"
227 int foo(int *i) {
228 static __thread int j = 0;
229 return *i ? j : *i;
230 }
231 EOF
232 local flags
233 case $1 in
234 -s) flags="-S";;
235 -c) flags="-c";;
236 -l) ;;
237 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
238 esac
239 : ${flags:=-fPIC -shared -Wl,-z,defs}
240 [[ $1 == -* ]] && shift
241 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
242 local ret=$?
243 rm -f "${base}"*
244 return ${ret}
167} 245}
168 246
169 247
170# Parse information from CBUILD/CHOST/CTARGET rather than 248# Parse information from CBUILD/CHOST/CTARGET rather than
171# use external variables from the profile. 249# use external variables from the profile.
469 # Since we moved the lib from usr/lib into lib this reference is 547 # Since we moved the lib from usr/lib into lib this reference is
470 # wrong. Hence, we update it here. We don't configure with 548 # wrong. Hence, we update it here. We don't configure with
471 # libdir=/lib because that messes up libtool files. 549 # libdir=/lib because that messes up libtool files.
472 # Make sure we don't lose the specific version, so just modify the 550 # Make sure we don't lose the specific version, so just modify the
473 # existing install_name 551 # existing install_name
552 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
553 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
554 local nowrite=yes
555 fi
474 install_name_tool \ 556 install_name_tool \
475 -id "${EPREFIX}"/${libdir}/${tlib} \ 557 -id "${EPREFIX}"/${libdir}/${tlib} \
476 "${ED}"/${libdir}/${tlib} 558 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
559 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
477 # Now as we don't use GNU binutils and our linker doesn't 560 # Now as we don't use GNU binutils and our linker doesn't
478 # understand linker scripts, just create a symlink. 561 # understand linker scripts, just create a symlink.
479 pushd "${ED}/usr/${libdir}" > /dev/null 562 pushd "${ED}/usr/${libdir}" > /dev/null
480 ln -snf "../../${libdir}/${tlib}" "${lib}" 563 ln -snf "../../${libdir}/${tlib}" "${lib}"
481 popd > /dev/null 564 popd > /dev/null
482 ;; 565 ;;
483 *-aix*|*-irix*|*-hpux*|*-interix*|*-winnt*) 566 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
484 if ${auto} ; then 567 if ${auto} ; then
485 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die 568 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
486 # no way to retrieve soname on these platforms (?) 569 # no way to retrieve soname on these platforms (?)
487 tlib=$(readlink "${ED}"/${libdir}/${lib}) 570 tlib=$(readlink "${ED}"/${libdir}/${lib})
488 tlib=${tlib##*/} 571 tlib=${tlib##*/}
512 # command line by itself). 595 # command line by itself).
513 pushd "${ED}/usr/${libdir}" > /dev/null 596 pushd "${ED}/usr/${libdir}" > /dev/null
514 ln -snf "../../${libdir}/${tlib}" "${lib}" 597 ln -snf "../../${libdir}/${tlib}" "${lib}"
515 popd > /dev/null 598 popd > /dev/null
516 ;; 599 ;;
600 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
601 if ${auto} ; then
602 tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
603 [[ -z ${tlib} ]] && tlib=${lib}
604 tlib=${tlib##*/} # 'internal name' can have a path component
605 mv "${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 [[ ${tlib} != ${lib} ]] &&
611 rm -f "${ED}"/${libdir}/${lib}
612 else
613 tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
614 [[ -z ${tlib} ]] && tlib=${lib}
615 tlib=${tlib##*/} # 'internal name' can have a path component
616 fi
617 pushd "${ED}"/usr/${libdir} >/dev/null
618 ln -snf "../../${libdir}/${tlib}" "${lib}"
619 # need the internal name in usr/lib too, to be available at runtime
620 # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
621 [[ ${tlib} != ${lib} ]] &&
622 ln -snf "../../${libdir}/${tlib}" "${tlib}"
623 popd >/dev/null
624 ;;
517 *) 625 *)
518 if ${auto} ; then 626 if ${auto} ; then
519 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib}) 627 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
520 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}" 628 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
521 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die 629 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die

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