/[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 1.73 2007/07/22 19:59:48 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.74 2007/08/17 10:14:13 vapier Exp $
4# 4
5# @ECLASS: toolchain-funcs.eclass
6# @MAINTAINER:
5# Maintainer: 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
10___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes" 16___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
11[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib 17[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
12 18
13DESCRIPTION="Based on the ${ECLASS} eclass" 19DESCRIPTION="Based on the ${ECLASS} eclass"
28 34
29 export ${var}=${prog} 35 export ${var}=${prog}
30 echo "${!var}" 36 echo "${!var}"
31} 37}
32 38
33# Returns the name of the archiver 39# @FUNCTION: tc-getAR
40# @USAGE: [toolchain prefix]
41# @RETURN: name of the archiver
34tc-getAR() { tc-getPROG AR ar "$@"; } 42tc-getAR() { tc-getPROG AR ar "$@"; }
35# Returns the name of the assembler 43# @FUNCTION: tc-getAS
44# @USAGE: [toolchain prefix]
45# @RETURN: name of the assembler
36tc-getAS() { tc-getPROG AS as "$@"; } 46tc-getAS() { tc-getPROG AS as "$@"; }
47# @FUNCTION: tc-getCC
48# @USAGE: [toolchain prefix]
37# Returns the name of the C compiler 49# @RETURN: name of the C compiler
38tc-getCC() { tc-getPROG CC gcc "$@"; } 50tc-getCC() { tc-getPROG CC gcc "$@"; }
51# @FUNCTION: tc-getCPP
52# @USAGE: [toolchain prefix]
39# Returns the name of the C preprocessor 53# @RETURN: name of the C preprocessor
40tc-getCPP() { tc-getPROG CPP cpp "$@"; } 54tc-getCPP() { tc-getPROG CPP cpp "$@"; }
55# @FUNCTION: tc-getCXX
56# @USAGE: [toolchain prefix]
41# Returns the name of the C++ compiler 57# @RETURN: name of the C++ compiler
42tc-getCXX() { tc-getPROG CXX g++ "$@"; } 58tc-getCXX() { tc-getPROG CXX g++ "$@"; }
43# Returns the name of the linker 59# @FUNCTION: tc-getLD
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the linker
44tc-getLD() { tc-getPROG LD ld "$@"; } 62tc-getLD() { tc-getPROG LD ld "$@"; }
45# Returns the name of the strip prog 63# @FUNCTION: tc-getSTRIP
64# @USAGE: [toolchain prefix]
65# @RETURN: name of the strip program
46tc-getSTRIP() { tc-getPROG STRIP strip "$@"; } 66tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
67# @FUNCTION: tc-getNM
68# @USAGE: [toolchain prefix]
47# Returns the name of the symbol/object thingy 69# @RETURN: name of the symbol/object thingy
48tc-getNM() { tc-getPROG NM nm "$@"; } 70tc-getNM() { tc-getPROG NM nm "$@"; }
71# @FUNCTION: tc-getRANLIB
72# @USAGE: [toolchain prefix]
49# Returns the name of the archiver indexer 73# @RETURN: name of the archiver indexer
50tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; } 74tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
75# @FUNCTION: tc-getF77
76# @USAGE: [toolchain prefix]
51# Returns the name of the fortran 77 compiler 77# @RETURN: name of the Fortran 77 compiler
52tc-getF77() { tc-getPROG F77 f77 "$@"; } 78tc-getF77() { tc-getPROG F77 f77 "$@"; }
79# @FUNCTION: tc-getF90
80# @USAGE: [toolchain prefix]
53# Returns the name of the fortran 90 compiler 81# @RETURN: name of the Fortran 90 compiler
54tc-getF90() { tc-getPROG F90 gfortran "$@"; } 82tc-getF90() { tc-getPROG F90 gfortran "$@"; }
83# @FUNCTION: tc-getFORTRAN
84# @USAGE: [toolchain prefix]
55# Returns the name of the fortran compiler 85# @RETURN: name of the Fortran compiler
56tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; } 86tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
87# @FUNCTION: tc-getGCJ
88# @USAGE: [toolchain prefix]
57# Returns the name of the java compiler 89# @RETURN: name of the java compiler
58tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
59 91
60# Returns the name of the C compiler for build 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
61tc-getBUILD_CC() { 95tc-getBUILD_CC() {
62 local v 96 local v
63 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do 97 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
64 if [[ -n ${!v} ]] ; then 98 if [[ -n ${!v} ]] ; then
65 export BUILD_CC=${!v} 99 export BUILD_CC=${!v}
77 111
78 export BUILD_CC=${search} 112 export BUILD_CC=${search}
79 echo "${search}" 113 echo "${search}"
80} 114}
81 115
116# @FUNCTION: tc-export
117# @USAGE: <list of toolchain variables>
118# @DESCRIPTION:
82# Quick way to export a bunch of vars at once 119# Quick way to export a bunch of compiler vars at once.
83tc-export() { 120tc-export() {
84 local var 121 local var
85 for var in "$@" ; do 122 for var in "$@" ; do
86 eval tc-get${var} > /dev/null 123 eval tc-get${var} > /dev/null
87 done 124 done
88} 125}
89 126
90# A simple way to see if we're using a cross-compiler ... 127# @FUNCTION: tc-is-cross-compiler
128# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
91tc-is-cross-compiler() { 129tc-is-cross-compiler() {
92 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 130 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
93} 131}
94 132
133# @FUNCTION: tc-is-softfloat
134# @DESCRIPTION:
95# See if this toolchain is a softfloat based one. 135# See if this toolchain is a softfloat based one.
136# @CODE
96# The possible return values: 137# The possible return values:
97# - only: the target is always softfloat (never had fpu) 138# - only: the target is always softfloat (never had fpu)
98# - yes: the target should support softfloat 139# - yes: the target should support softfloat
99# - no: the target should support hardfloat 140# - no: the target should support hardfloat
141# @CODE
100# This allows us to react differently where packages accept 142# This allows us to react differently where packages accept
101# softfloat flags in the case where support is optional, but 143# softfloat flags in the case where support is optional, but
102# rejects softfloat flags where the target always lacks an fpu. 144# rejects softfloat flags where the target always lacks an fpu.
103tc-is-softfloat() { 145tc-is-softfloat() {
104 case ${CTARGET} in 146 case ${CTARGET} in
169 # normalizing inputs for testing ${CTARGET}, let's filter 211 # normalizing inputs for testing ${CTARGET}, let's filter
170 # other cross targets (mingw and such) into the unknown. 212 # other cross targets (mingw and such) into the unknown.
171 *) echo unknown;; 213 *) echo unknown;;
172 esac 214 esac
173} 215}
216# @FUNCTION: tc-arch-kernel
217# @USAGE: [toolchain prefix]
218# @RETURN: name of the kernel arch according to the compiler target
174tc-arch-kernel() { 219tc-arch-kernel() {
175 tc-ninja_magic_to_arch kern $@ 220 tc-ninja_magic_to_arch kern "$@"
176} 221}
222# @FUNCTION: tc-arch
223# @USAGE: [toolchain prefix]
224# @RETURN: name of the portage arch according to the compiler target
177tc-arch() { 225tc-arch() {
178 tc-ninja_magic_to_arch portage $@ 226 tc-ninja_magic_to_arch portage "$@"
179} 227}
228
180tc-endian() { 229tc-endian() {
181 local host=$1 230 local host=$1
182 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 231 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
183 host=${host%%-*} 232 host=${host%%-*}
184 233
201 x86_64*) echo little;; 250 x86_64*) echo little;;
202 *) echo wtf;; 251 *) echo wtf;;
203 esac 252 esac
204} 253}
205 254
206# Returns the version as by `$CC -dumpversion` 255# @FUNCTION: gcc-fullversion
256# @RETURN: compiler version (major.minor.micro: [3.4.6])
207gcc-fullversion() { 257gcc-fullversion() {
208 $(tc-getCC "$@") -dumpversion 258 $(tc-getCC "$@") -dumpversion
209} 259}
210# Returns the version, but only the <major>.<minor> 260# @FUNCTION: gcc-version
261# @RETURN: compiler version (major.minor: [3.4].6)
211gcc-version() { 262gcc-version() {
212 gcc-fullversion "$@" | cut -f1,2 -d. 263 gcc-fullversion "$@" | cut -f1,2 -d.
213} 264}
214# Returns the Major version 265# @FUNCTION: gcc-major-version
266# @RETURN: major compiler version (major: [3].4.6)
215gcc-major-version() { 267gcc-major-version() {
216 gcc-version "$@" | cut -f1 -d. 268 gcc-version "$@" | cut -f1 -d.
217} 269}
218# Returns the Minor version 270# @FUNCTION: gcc-minor-version
271# @RETURN: minor compiler version (minor: 3.[4].6)
219gcc-minor-version() { 272gcc-minor-version() {
220 gcc-version "$@" | cut -f2 -d. 273 gcc-version "$@" | cut -f2 -d.
221} 274}
222# Returns the Micro version 275# @FUNCTION: gcc-micro-version
276# @RETURN: micro compiler version (micro: 3.4.[6])
223gcc-micro-version() { 277gcc-micro-version() {
224 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d- 278 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
225} 279}
280
226# Returns the installation directory - internal toolchain 281# Returns the installation directory - internal toolchain
227# function for use by _gcc-specs-exists (for flag-o-matic). 282# function for use by _gcc-specs-exists (for flag-o-matic).
228_gcc-install-dir() { 283_gcc-install-dir() {
229 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\ 284 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\
230 awk '$1=="install:" {print $2}')" 285 awk '$1=="install:" {print $2}')"
306 directive=$(gcc-specs-directive cc1) 361 directive=$(gcc-specs-directive cc1)
307 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 362 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
308} 363}
309 364
310 365
366# @FUNCTION: gen_usr_ldscript
367# @USAGE: <list of libs to create linker scripts for>
368# @DESCRIPTION:
311# This function generate linker scripts in /usr/lib for dynamic 369# This function generate linker scripts in /usr/lib for dynamic
312# libs in /lib. This is to fix linking problems when you have 370# libs in /lib. This is to fix linking problems when you have
313# the .so in /lib, and the .a in /usr/lib. What happens is that 371# the .so in /lib, and the .a in /usr/lib. What happens is that
314# in some cases when linking dynamic, the .a in /usr/lib is used 372# in some cases when linking dynamic, the .a in /usr/lib is used
315# instead of the .so in /lib due to gcc/libtool tweaking ld's 373# instead of the .so in /lib due to gcc/libtool tweaking ld's
316# library search path. This cause many builds to fail. 374# library search path. This causes many builds to fail.
317# See bug #4411 for more info. 375# See bug #4411 for more info.
318# 376#
319# To use, simply call:
320#
321# gen_usr_ldscript libfoo.so
322#
323# Note that you should in general use the unversioned name of 377# Note that you should in general use the unversioned name of
324# the library, as ldconfig should usually update it correctly 378# the library (libfoo.so), as ldconfig should usually update it
325# to point to the latest version of the library present. 379# correctly to point to the latest version of the library present.
326gen_usr_ldscript() { 380gen_usr_ldscript() {
327 local lib libdir=$(get_libdir) output_format="" 381 local lib libdir=$(get_libdir) output_format=""
328 # Just make sure it exists 382 # Just make sure it exists
329 dodir /usr/${libdir} 383 dodir /usr/${libdir}
330 384

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