/[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 1.96 2009/11/27 21:31:29 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 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
90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
91# @FUNCTION: tc-getPKG_CONFIG 91# @FUNCTION: tc-getPKG_CONFIG
92# @USAGE: [toolchain prefix] 92# @USAGE: [toolchain prefix]
93# @RETURN: name of the pkg-config tool 93# @RETURN: name of the pkg-config tool
94tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; } 94tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
95# @FUNCTION: tc-getRC
96# @USAGE: [toolchain prefix]
97# @RETURN: name of the Windows resource compiler
98tc-getRC() { tc-getPROG RC windres "$@"; }
99# @FUNCTION: tc-getDLLWRAP
100# @USAGE: [toolchain prefix]
101# @RETURN: name of the Windows dllwrap utility
102tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
95 103
96# @FUNCTION: tc-getBUILD_CC 104# @FUNCTION: tc-getBUILD_CC
97# @USAGE: [toolchain prefix] 105# @USAGE: [toolchain prefix]
98# @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
99tc-getBUILD_CC() { 107tc-getBUILD_CC() {
140# See if this toolchain is a softfloat based one. 148# See if this toolchain is a softfloat based one.
141# @CODE 149# @CODE
142# The possible return values: 150# The possible return values:
143# - only: the target is always softfloat (never had fpu) 151# - only: the target is always softfloat (never had fpu)
144# - yes: the target should support softfloat 152# - yes: the target should support softfloat
145# - no: the target should support hardfloat 153# - no: the target doesn't support softfloat
146# @CODE 154# @CODE
147# This allows us to react differently where packages accept 155# This allows us to react differently where packages accept
148# softfloat flags in the case where support is optional, but 156# softfloat flags in the case where support is optional, but
149# rejects softfloat flags where the target always lacks an fpu. 157# rejects softfloat flags where the target always lacks an fpu.
150tc-is-softfloat() { 158tc-is-softfloat() {
157 || echo "no" 165 || echo "no"
158 ;; 166 ;;
159 esac 167 esac
160} 168}
161 169
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 [[ ${CTARGET//_/-} == *-hardfloat-* ]] \
179 && echo "yes" \
180 || echo "no"
181}
182
162# @FUNCTION: tc-is-static-only 183# @FUNCTION: tc-is-static-only
163# @DESCRIPTION: 184# @DESCRIPTION:
164# Return shell true if the target does not support shared libs, shell false 185# Return shell true if the target does not support shared libs, shell false
165# otherwise. 186# otherwise.
166tc-is-static-only() { 187tc-is-static-only() {
167 local host=${CTARGET:-${CHOST}} 188 local host=${CTARGET:-${CHOST}}
168 189
169 # *MiNT doesn't have shared libraries, only platform so far 190 # *MiNT doesn't have shared libraries, only platform so far
170 return $([[ ${host} == *-mint* ]]) 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}
171} 221}
172 222
173 223
174# Parse information from CBUILD/CHOST/CTARGET rather than 224# Parse information from CBUILD/CHOST/CTARGET rather than
175# use external variables from the profile. 225# use external variables from the profile.

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