/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2007 Gentoo Foundation 1# Copyright 1999-2011 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 1.114 2012/07/25 18:27:56 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" 16if [[ ${___ECLASS_ONCE_TOOLCHAIN_FUNCS} != "recur -_+^+_- spank" ]] ; then
11[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib 17___ECLASS_ONCE_TOOLCHAIN_FUNCS="recur -_+^+_- spank"
18
19inherit multilib
12 20
13DESCRIPTION="Based on the ${ECLASS} eclass" 21DESCRIPTION="Based on the ${ECLASS} eclass"
14 22
23# tc-getPROG <VAR [search vars]> <default> [tuple]
15tc-getPROG() { 24_tc-getPROG() {
16 local var=$1 25 local tuple=$1
26 local v var vars=$2
17 local prog=$2 27 local prog=$3
18 28
19 if [[ -n ${!var} ]] ; then 29 var=${vars%% *}
20 echo "${!var}" 30 for v in ${vars} ; do
21 return 0
22 fi
23
24 local search=
25 [[ -n $3 ]] && search=$(type -p "$3-${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 preprocessor
40tc-getCPP() { tc-getPROG CPP cpp "$@"; }
41# Returns the name of the C++ compiler
42tc-getCXX() { tc-getPROG CXX g++ "$@"; }
43# Returns the name of the linker
44tc-getLD() { tc-getPROG LD ld "$@"; }
45# Returns the name of the strip prog
46tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
47# Returns the name of the symbol/object thingy
48tc-getNM() { tc-getPROG NM nm "$@"; }
49# Returns the name of the archiver indexer
50tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
51# Returns the name of the fortran 77 compiler
52tc-getF77() { tc-getPROG F77 f77 "$@"; }
53# Returns the name of the fortran 90 compiler
54tc-getF90() { tc-getPROG F90 gfortran "$@"; }
55# Returns the name of the fortran compiler
56tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
57# Returns the name of the java compiler
58tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
59
60# Returns the name of the C compiler for build
61tc-getBUILD_CC() {
62 local v
63 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
64 if [[ -n ${!v} ]] ; then 31 if [[ -n ${!v} ]] ; then
65 export BUILD_CC=${!v} 32 export ${var}="${!v}"
66 echo "${!v}" 33 echo "${!v}"
67 return 0 34 return 0
68 fi 35 fi
69 done 36 done
70 37
71 local search= 38 local search=
72 if [[ -n ${CBUILD} ]] ; then 39 [[ -n $4 ]] && search=$(type -p "$4-${prog}")
73 search=$(type -p ${CBUILD}-gcc) 40 [[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}")
74 search=${search##*/} 41 [[ -n ${search} ]] && prog=${search##*/}
75 fi
76 search=${search:-gcc}
77 42
78 export BUILD_CC=${search} 43 export ${var}=${prog}
79 echo "${search}" 44 echo "${!var}"
80} 45}
46tc-getBUILD_PROG() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; }
47tc-getPROG() { _tc-getPROG CHOST "$@"; }
81 48
49# @FUNCTION: tc-getAR
50# @USAGE: [toolchain prefix]
51# @RETURN: name of the archiver
52tc-getAR() { tc-getPROG AR ar "$@"; }
53# @FUNCTION: tc-getAS
54# @USAGE: [toolchain prefix]
55# @RETURN: name of the assembler
56tc-getAS() { tc-getPROG AS as "$@"; }
57# @FUNCTION: tc-getCC
58# @USAGE: [toolchain prefix]
59# @RETURN: name of the C compiler
60tc-getCC() { tc-getPROG CC gcc "$@"; }
61# @FUNCTION: tc-getCPP
62# @USAGE: [toolchain prefix]
63# @RETURN: name of the C preprocessor
64tc-getCPP() { tc-getPROG CPP cpp "$@"; }
65# @FUNCTION: tc-getCXX
66# @USAGE: [toolchain prefix]
67# @RETURN: name of the C++ compiler
68tc-getCXX() { tc-getPROG CXX g++ "$@"; }
69# @FUNCTION: tc-getLD
70# @USAGE: [toolchain prefix]
71# @RETURN: name of the linker
72tc-getLD() { tc-getPROG LD ld "$@"; }
73# @FUNCTION: tc-getSTRIP
74# @USAGE: [toolchain prefix]
75# @RETURN: name of the strip program
76tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
77# @FUNCTION: tc-getNM
78# @USAGE: [toolchain prefix]
79# @RETURN: name of the symbol/object thingy
80tc-getNM() { tc-getPROG NM nm "$@"; }
81# @FUNCTION: tc-getRANLIB
82# @USAGE: [toolchain prefix]
83# @RETURN: name of the archiver indexer
84tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
85# @FUNCTION: tc-getOBJCOPY
86# @USAGE: [toolchain prefix]
87# @RETURN: name of the object copier
88tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
89# @FUNCTION: tc-getF77
90# @USAGE: [toolchain prefix]
91# @RETURN: name of the Fortran 77 compiler
92tc-getF77() { tc-getPROG F77 gfortran "$@"; }
93# @FUNCTION: tc-getFC
94# @USAGE: [toolchain prefix]
95# @RETURN: name of the Fortran 90 compiler
96tc-getFC() { tc-getPROG FC gfortran "$@"; }
97# @FUNCTION: tc-getGCJ
98# @USAGE: [toolchain prefix]
99# @RETURN: name of the java compiler
100tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
101# @FUNCTION: tc-getPKG_CONFIG
102# @USAGE: [toolchain prefix]
103# @RETURN: name of the pkg-config tool
104tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
105# @FUNCTION: tc-getRC
106# @USAGE: [toolchain prefix]
107# @RETURN: name of the Windows resource compiler
108tc-getRC() { tc-getPROG RC windres "$@"; }
109# @FUNCTION: tc-getDLLWRAP
110# @USAGE: [toolchain prefix]
111# @RETURN: name of the Windows dllwrap utility
112tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
113
114# @FUNCTION: tc-getBUILD_AR
115# @USAGE: [toolchain prefix]
116# @RETURN: name of the archiver for building binaries to run on the build machine
117tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
118# @FUNCTION: tc-getBUILD_AS
119# @USAGE: [toolchain prefix]
120# @RETURN: name of the assembler for building binaries to run on the build machine
121tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
122# @FUNCTION: tc-getBUILD_CC
123# @USAGE: [toolchain prefix]
124# @RETURN: name of the C compiler for building binaries to run on the build machine
125tc-getBUILD_CC() { tc-getBUILD_PROG CC gcc "$@"; }
126# @FUNCTION: tc-getBUILD_CPP
127# @USAGE: [toolchain prefix]
128# @RETURN: name of the C preprocessor for building binaries to run on the build machine
129tc-getBUILD_CPP() { tc-getBUILD_PROG CPP cpp "$@"; }
130# @FUNCTION: tc-getBUILD_CXX
131# @USAGE: [toolchain prefix]
132# @RETURN: name of the C++ compiler for building binaries to run on the build machine
133tc-getBUILD_CXX() { tc-getBUILD_PROG CXX g++ "$@"; }
134# @FUNCTION: tc-getBUILD_LD
135# @USAGE: [toolchain prefix]
136# @RETURN: name of the linker for building binaries to run on the build machine
137tc-getBUILD_LD() { tc-getBUILD_PROG LD ld "$@"; }
138# @FUNCTION: tc-getBUILD_STRIP
139# @USAGE: [toolchain prefix]
140# @RETURN: name of the strip program for building binaries to run on the build machine
141tc-getBUILD_STRIP() { tc-getBUILD_PROG STRIP strip "$@"; }
142# @FUNCTION: tc-getBUILD_NM
143# @USAGE: [toolchain prefix]
144# @RETURN: name of the symbol/object thingy for building binaries to run on the build machine
145tc-getBUILD_NM() { tc-getBUILD_PROG NM nm "$@"; }
146# @FUNCTION: tc-getBUILD_RANLIB
147# @USAGE: [toolchain prefix]
148# @RETURN: name of the archiver indexer for building binaries to run on the build machine
149tc-getBUILD_RANLIB() { tc-getBUILD_PROG RANLIB ranlib "$@"; }
150# @FUNCTION: tc-getBUILD_OBJCOPY
151# @USAGE: [toolchain prefix]
152# @RETURN: name of the object copier for building binaries to run on the build machine
153tc-getBUILD_OBJCOPY() { tc-getBUILD_PROG OBJCOPY objcopy "$@"; }
154# @FUNCTION: tc-getBUILD_PKG_CONFIG
155# @USAGE: [toolchain prefix]
156# @RETURN: name of the pkg-config tool for building binaries to run on the build machine
157tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
158
159# @FUNCTION: tc-export
160# @USAGE: <list of toolchain variables>
161# @DESCRIPTION:
82# Quick way to export a bunch of vars at once 162# Quick way to export a bunch of compiler vars at once.
83tc-export() { 163tc-export() {
84 local var 164 local var
85 for var in "$@" ; do 165 for var in "$@" ; do
166 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
86 eval tc-get${var} > /dev/null 167 eval tc-get${var} > /dev/null
87 done 168 done
88} 169}
89 170
90# A simple way to see if we're using a cross-compiler ... 171# @FUNCTION: tc-is-cross-compiler
172# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
91tc-is-cross-compiler() { 173tc-is-cross-compiler() {
92 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 174 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
93} 175}
94 176
177# @FUNCTION: tc-is-softfloat
178# @DESCRIPTION:
95# See if this toolchain is a softfloat based one. 179# See if this toolchain is a softfloat based one.
180# @CODE
96# The possible return values: 181# The possible return values:
97# - only: the target is always softfloat (never had fpu) 182# - only: the target is always softfloat (never had fpu)
98# - yes: the target should support softfloat 183# - yes: the target should support softfloat
184# - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
99# - no: the target should support hardfloat 185# - no: the target doesn't support softfloat
186# @CODE
100# This allows us to react differently where packages accept 187# This allows us to react differently where packages accept
101# softfloat flags in the case where support is optional, but 188# softfloat flags in the case where support is optional, but
102# rejects softfloat flags where the target always lacks an fpu. 189# rejects softfloat flags where the target always lacks an fpu.
103tc-is-softfloat() { 190tc-is-softfloat() {
191 local CTARGET=${CTARGET:-${CHOST}}
104 case ${CTARGET} in 192 case ${CTARGET} in
105 bfin*|h8300*) 193 bfin*|h8300*)
106 echo "only" ;; 194 echo "only" ;;
107 *) 195 *)
108 [[ ${CTARGET//_/-} == *-softfloat-* ]] \ 196 if [[ ${CTARGET//_/-} == *-softfloat-* ]] ; then
109 && echo "yes" \ 197 echo "yes"
198 elif [[ ${CTARGET//_/-} == *-softfp-* ]] ; then
199 echo "softfp"
200 else
110 || echo "no" 201 echo "no"
202 fi
111 ;; 203 ;;
112 esac 204 esac
113} 205}
206
207# @FUNCTION: tc-is-static-only
208# @DESCRIPTION:
209# Return shell true if the target does not support shared libs, shell false
210# otherwise.
211tc-is-static-only() {
212 local host=${CTARGET:-${CHOST}}
213
214 # *MiNT doesn't have shared libraries, only platform so far
215 return $([[ ${host} == *-mint* ]])
216}
217
218# @FUNCTION: tc-export_build_env
219# @USAGE: [compiler variables]
220# @DESCRIPTION:
221# Export common build related compiler settings.
222tc-export_build_env() {
223 tc-export "$@"
224 : ${BUILD_CFLAGS:=-O1 -pipe}
225 : ${BUILD_CXXFLAGS:=-O1 -pipe}
226 : ${BUILD_CPPFLAGS:=}
227 : ${BUILD_LDFLAGS:=}
228 export BUILD_{C,CXX,CPP,LD}FLAGS
229}
230
231# @FUNCTION: tc-env_build
232# @USAGE: <command> [command args]
233# @INTERNAL
234# @DESCRIPTION:
235# Setup the compile environment to the build tools and then execute the
236# specified command. We use tc-getBUILD_XX here so that we work with
237# all of the semi-[non-]standard env vars like $BUILD_CC which often
238# the target build system does not check.
239tc-env_build() {
240 tc-export_build_env
241 CFLAGS=${BUILD_CFLAGS} \
242 CXXFLAGS=${BUILD_CXXFLAGS} \
243 CPPFLAGS=${BUILD_CPPFLAGS} \
244 LDFLAGS=${BUILD_LDFLAGS} \
245 AR=$(tc-getBUILD_AR) \
246 AS=$(tc-getBUILD_AS) \
247 CC=$(tc-getBUILD_CC) \
248 CPP=$(tc-getBUILD_CPP) \
249 CXX=$(tc-getBUILD_CXX) \
250 LD=$(tc-getBUILD_LD) \
251 NM=$(tc-getBUILD_NM) \
252 PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
253 RANLIB=$(tc-getBUILD_RANLIB) \
254 "$@"
255}
256
257# @FUNCTION: econf_build
258# @USAGE: [econf flags]
259# @DESCRIPTION:
260# Sometimes we need to locally build up some tools to run on CBUILD because
261# the package has helper utils which are compiled+executed when compiling.
262# This won't work when cross-compiling as the CHOST is set to a target which
263# we cannot natively execute.
264#
265# For example, the python package will build up a local python binary using
266# a portable build system (configure+make), but then use that binary to run
267# local python scripts to build up other components of the overall python.
268# We cannot rely on the python binary in $PATH as that often times will be
269# a different version, or not even installed in the first place. Instead,
270# we compile the code in a different directory to run on CBUILD, and then
271# use that binary when compiling the main package to run on CHOST.
272#
273# For example, with newer EAPIs, you'd do something like:
274# @CODE
275# src_configure() {
276# ECONF_SOURCE=${S}
277# if tc-is-cross-compiler ; then
278# mkdir "${WORKDIR}"/${CBUILD}
279# pushd "${WORKDIR}"/${CBUILD} >/dev/null
280# econf_build --disable-some-unused-stuff
281# popd >/dev/null
282# fi
283# ... normal build paths ...
284# }
285# src_compile() {
286# if tc-is-cross-compiler ; then
287# pushd "${WORKDIR}"/${CBUILD} >/dev/null
288# emake one-or-two-build-tools
289# ln/mv build-tools to normal build paths in ${S}/
290# popd >/dev/null
291# fi
292# ... normal build paths ...
293# }
294# @CODE
295econf_build() {
296 tc-env_build econf --build=${CBUILD:-${CHOST}} "$@"
297}
298
299# @FUNCTION: tc-has-openmp
300# @USAGE: [toolchain prefix]
301# @DESCRIPTION:
302# See if the toolchain supports OpenMP.
303tc-has-openmp() {
304 local base="${T}/test-tc-openmp"
305 cat <<-EOF > "${base}.c"
306 #include <omp.h>
307 int main() {
308 int nthreads, tid, ret = 0;
309 #pragma omp parallel private(nthreads, tid)
310 {
311 tid = omp_get_thread_num();
312 nthreads = omp_get_num_threads(); ret += tid + nthreads;
313 }
314 return ret;
315 }
316 EOF
317 $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
318 local ret=$?
319 rm -f "${base}"*
320 return ${ret}
321}
322
323# @FUNCTION: tc-has-tls
324# @USAGE: [-s|-c|-l] [toolchain prefix]
325# @DESCRIPTION:
326# See if the toolchain supports thread local storage (TLS). Use -s to test the
327# compiler, -c to also test the assembler, and -l to also test the C library
328# (the default).
329tc-has-tls() {
330 local base="${T}/test-tc-tls"
331 cat <<-EOF > "${base}.c"
332 int foo(int *i) {
333 static __thread int j = 0;
334 return *i ? j : *i;
335 }
336 EOF
337 local flags
338 case $1 in
339 -s) flags="-S";;
340 -c) flags="-c";;
341 -l) ;;
342 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
343 esac
344 : ${flags:=-fPIC -shared -Wl,-z,defs}
345 [[ $1 == -* ]] && shift
346 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
347 local ret=$?
348 rm -f "${base}"*
349 return ${ret}
350}
351
114 352
115# Parse information from CBUILD/CHOST/CTARGET rather than 353# Parse information from CBUILD/CHOST/CTARGET rather than
116# use external variables from the profile. 354# use external variables from the profile.
117tc-ninja_magic_to_arch() { 355tc-ninja_magic_to_arch() {
118ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 356ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
126 arm*) echo arm;; 364 arm*) echo arm;;
127 avr*) ninj avr32 avr;; 365 avr*) ninj avr32 avr;;
128 bfin*) ninj blackfin bfin;; 366 bfin*) ninj blackfin bfin;;
129 cris*) echo cris;; 367 cris*) echo cris;;
130 hppa*) ninj parisc hppa;; 368 hppa*) ninj parisc hppa;;
131 i?86*) ninj i386 x86;; 369 i?86*)
370 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
371 # trees have been unified into 'x86'.
372 # FreeBSD still uses i386
373 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
374 echo i386
375 else
376 echo x86
377 fi
378 ;;
132 ia64*) echo ia64;; 379 ia64*) echo ia64;;
133 m68*) echo m68k;; 380 m68*) echo m68k;;
134 mips*) echo mips;; 381 mips*) echo mips;;
135 nios2*) echo nios2;; 382 nios2*) echo nios2;;
136 nios*) echo nios;; 383 nios*) echo nios;;
137 powerpc*) 384 powerpc*)
138 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees 385 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
139 # have been unified into simply 'powerpc', but until 2.6.16, 386 # have been unified into simply 'powerpc', but until 2.6.16,
140 # ppc32 is still using ARCH="ppc" as default 387 # ppc32 is still using ARCH="ppc" as default
141 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then 388 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
142 echo powerpc 389 echo powerpc
143 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then 390 elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
144 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then 391 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
145 echo powerpc 392 echo powerpc
146 else 393 else
147 echo ppc 394 echo ppc
148 fi 395 fi
149 elif [[ ${host} == powerpc64* ]] ; then 396 elif [[ ${host} == powerpc64* ]] ; then
150 echo ppc64 397 echo ppc64
151 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then 398 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
152 ninj ppc64 ppc 399 ninj ppc64 ppc
153 else 400 else
154 echo ppc 401 echo ppc
155 fi 402 fi
156 ;; 403 ;;
157 s390*) echo s390;; 404 s390*) echo s390;;
158 sh64*) ninj sh64 sh;; 405 sh64*) ninj sh64 sh;;
159 sh*) echo sh;; 406 sh*) echo sh;;
160 sparc64*) ninj sparc64 sparc;; 407 sparc64*) ninj sparc64 sparc;;
161 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 408 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
162 && ninj sparc64 sparc \ 409 && ninj sparc64 sparc \
163 || echo sparc 410 || echo sparc
164 ;; 411 ;;
165 vax*) echo vax;; 412 vax*) echo vax;;
166 x86_64*) ninj x86_64 amd64;; 413 x86_64*freebsd*) echo amd64;;
414 x86_64*)
415 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
416 # trees have been unified into 'x86'.
417 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
418 echo x86
419 else
420 ninj x86_64 amd64
421 fi
422 ;;
167 423
168 # since our usage of tc-arch is largely concerned with 424 # since our usage of tc-arch is largely concerned with
169 # normalizing inputs for testing ${CTARGET}, let's filter 425 # normalizing inputs for testing ${CTARGET}, let's filter
170 # other cross targets (mingw and such) into the unknown. 426 # other cross targets (mingw and such) into the unknown.
171 *) echo unknown;; 427 *) echo unknown;;
172 esac 428 esac
173} 429}
430# @FUNCTION: tc-arch-kernel
431# @USAGE: [toolchain prefix]
432# @RETURN: name of the kernel arch according to the compiler target
174tc-arch-kernel() { 433tc-arch-kernel() {
175 tc-ninja_magic_to_arch kern $@ 434 tc-ninja_magic_to_arch kern "$@"
176} 435}
436# @FUNCTION: tc-arch
437# @USAGE: [toolchain prefix]
438# @RETURN: name of the portage arch according to the compiler target
177tc-arch() { 439tc-arch() {
178 tc-ninja_magic_to_arch portage $@ 440 tc-ninja_magic_to_arch portage "$@"
179} 441}
442
180tc-endian() { 443tc-endian() {
181 local host=$1 444 local host=$1
182 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 445 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
183 host=${host%%-*} 446 host=${host%%-*}
184 447
201 x86_64*) echo little;; 464 x86_64*) echo little;;
202 *) echo wtf;; 465 *) echo wtf;;
203 esac 466 esac
204} 467}
205 468
206# Returns the version as by `$CC -dumpversion` 469# Internal func. The first argument is the version info to expand.
470# Query the preprocessor to improve compatibility across different
471# compilers rather than maintaining a --version flag matrix. #335943
472_gcc_fullversion() {
473 local ver="$1"; shift
474 set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
475 eval echo "$ver"
476}
477
478# @FUNCTION: gcc-fullversion
479# @RETURN: compiler version (major.minor.micro: [3.4.6])
207gcc-fullversion() { 480gcc-fullversion() {
208 $(tc-getCC "$@") -dumpversion 481 _gcc_fullversion '$1.$2.$3' "$@"
209} 482}
210# Returns the version, but only the <major>.<minor> 483# @FUNCTION: gcc-version
484# @RETURN: compiler version (major.minor: [3.4].6)
211gcc-version() { 485gcc-version() {
212 gcc-fullversion "$@" | cut -f1,2 -d. 486 _gcc_fullversion '$1.$2' "$@"
213} 487}
214# Returns the Major version 488# @FUNCTION: gcc-major-version
489# @RETURN: major compiler version (major: [3].4.6)
215gcc-major-version() { 490gcc-major-version() {
216 gcc-version "$@" | cut -f1 -d. 491 _gcc_fullversion '$1' "$@"
217} 492}
218# Returns the Minor version 493# @FUNCTION: gcc-minor-version
494# @RETURN: minor compiler version (minor: 3.[4].6)
219gcc-minor-version() { 495gcc-minor-version() {
220 gcc-version "$@" | cut -f2 -d. 496 _gcc_fullversion '$2' "$@"
221} 497}
222# Returns the Micro version 498# @FUNCTION: gcc-micro-version
499# @RETURN: micro compiler version (micro: 3.4.[6])
223gcc-micro-version() { 500gcc-micro-version() {
224 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d- 501 _gcc_fullversion '$3' "$@"
225} 502}
503
226# Returns the installation directory - internal toolchain 504# Returns the installation directory - internal toolchain
227# function for use by _gcc-specs-exists (for flag-o-matic). 505# function for use by _gcc-specs-exists (for flag-o-matic).
228_gcc-install-dir() { 506_gcc-install-dir() {
229 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\ 507 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
230 awk '$1=="install:" {print $2}')" 508 awk '$1=="install:" {print $2}')"
231} 509}
232# Returns true if the indicated specs file exists - internal toolchain 510# Returns true if the indicated specs file exists - internal toolchain
233# function for use by flag-o-matic. 511# function for use by flag-o-matic.
234_gcc-specs-exists() { 512_gcc-specs-exists() {
278 556
279# Returns true if gcc sets relro 557# Returns true if gcc sets relro
280gcc-specs-relro() { 558gcc-specs-relro() {
281 local directive 559 local directive
282 directive=$(gcc-specs-directive link_command) 560 directive=$(gcc-specs-directive link_command)
283 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 561 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
284} 562}
285# Returns true if gcc sets now 563# Returns true if gcc sets now
286gcc-specs-now() { 564gcc-specs-now() {
287 local directive 565 local directive
288 directive=$(gcc-specs-directive link_command) 566 directive=$(gcc-specs-directive link_command)
289 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 567 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
290} 568}
291# Returns true if gcc builds PIEs 569# Returns true if gcc builds PIEs
292gcc-specs-pie() { 570gcc-specs-pie() {
293 local directive 571 local directive
294 directive=$(gcc-specs-directive cc1) 572 directive=$(gcc-specs-directive cc1)
295 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 573 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
296} 574}
297# Returns true if gcc builds with the stack protector 575# Returns true if gcc builds with the stack protector
298gcc-specs-ssp() { 576gcc-specs-ssp() {
299 local directive 577 local directive
300 directive=$(gcc-specs-directive cc1) 578 directive=$(gcc-specs-directive cc1)
301 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 579 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
302} 580}
303# Returns true if gcc upgrades fstack-protector to fstack-protector-all 581# Returns true if gcc upgrades fstack-protector to fstack-protector-all
304gcc-specs-ssp-to-all() { 582gcc-specs-ssp-to-all() {
305 local directive 583 local directive
306 directive=$(gcc-specs-directive cc1) 584 directive=$(gcc-specs-directive cc1)
307 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 585 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
308} 586}
587# Returns true if gcc builds with fno-strict-overflow
588gcc-specs-nostrict() {
589 local directive
590 directive=$(gcc-specs-directive cc1)
591 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
592}
309 593
310 594
595# @FUNCTION: gen_usr_ldscript
596# @USAGE: [-a] <list of libs to create linker scripts for>
597# @DESCRIPTION:
311# This function generate linker scripts in /usr/lib for dynamic 598# This function generate linker scripts in /usr/lib for dynamic
312# libs in /lib. This is to fix linking problems when you have 599# libs in /lib. This is to fix linking problems when you have
313# the .so in /lib, and the .a in /usr/lib. What happens is that 600# the .so in /lib, and the .a in /usr/lib. What happens is that
314# in some cases when linking dynamic, the .a in /usr/lib is used 601# in some cases when linking dynamic, the .a in /usr/lib is used
315# instead of the .so in /lib due to gcc/libtool tweaking ld's 602# instead of the .so in /lib due to gcc/libtool tweaking ld's
316# library search path. This cause many builds to fail. 603# library search path. This causes many builds to fail.
317# See bug #4411 for more info. 604# See bug #4411 for more info.
318# 605#
319# To use, simply call:
320#
321# gen_usr_ldscript libfoo.so
322#
323# Note that you should in general use the unversioned name of 606# Note that you should in general use the unversioned name of
324# the library, as ldconfig should usually update it correctly 607# the library (libfoo.so), as ldconfig should usually update it
325# to point to the latest version of the library present. 608# correctly to point to the latest version of the library present.
326gen_usr_ldscript() { 609gen_usr_ldscript() {
327 local lib libdir=$(get_libdir) output_format="" 610 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
611 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
612
613 tc-is-static-only && return
614
615 # Eventually we'd like to get rid of this func completely #417451
616 case ${CTARGET:-${CHOST}} in
617 *-darwin*) ;;
618 *linux*|*-freebsd*)
619 use prefix && return 0 ;;
620 *) return 0 ;;
621 esac
622
328 # Just make sure it exists 623 # Just make sure it exists
329 dodir /usr/${libdir} 624 dodir /usr/${libdir}
625
626 if [[ $1 == "-a" ]] ; then
627 auto=true
628 shift
629 dodir /${libdir}
630 fi
330 631
331 # OUTPUT_FORMAT gives hints to the linker as to what binary format 632 # OUTPUT_FORMAT gives hints to the linker as to what binary format
332 # is referenced ... makes multilib saner 633 # is referenced ... makes multilib saner
333 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') 634 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
334 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" 635 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
335 636
336 for lib in "$@" ; do 637 for lib in "$@" ; do
337 if [[ ${USERLAND} == "Darwin" ]] ; then 638 local tlib
338 ewarn "Not creating fake dynamic library for $lib on Darwin;" 639 if ${auto} ; then
339 ewarn "making a symlink instead." 640 lib="lib${lib}${suffix}"
340 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
341 else 641 else
642 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
643 # This especially is for AIX where $(get_libname) can return ".a",
644 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
645 [[ -r ${ED}/${libdir}/${lib} ]] || continue
646 #TODO: better die here?
647 fi
648
649 case ${CTARGET:-${CHOST}} in
650 *-darwin*)
651 if ${auto} ; then
652 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
653 else
654 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
655 fi
656 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
657 tlib=${tlib##*/}
658
659 if ${auto} ; then
660 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
661 # some install_names are funky: they encode a version
662 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
663 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
664 fi
665 rm -f "${ED}"/${libdir}/${lib}
666 fi
667
668 # Mach-O files have an id, which is like a soname, it tells how
669 # another object linking against this lib should reference it.
670 # Since we moved the lib from usr/lib into lib this reference is
671 # wrong. Hence, we update it here. We don't configure with
672 # libdir=/lib because that messes up libtool files.
673 # Make sure we don't lose the specific version, so just modify the
674 # existing install_name
675 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
676 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
677 local nowrite=yes
678 fi
679 install_name_tool \
680 -id "${EPREFIX}"/${libdir}/${tlib} \
681 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
682 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
683 # Now as we don't use GNU binutils and our linker doesn't
684 # understand linker scripts, just create a symlink.
685 pushd "${ED}/usr/${libdir}" > /dev/null
686 ln -snf "../../${libdir}/${tlib}" "${lib}"
687 popd > /dev/null
688 ;;
689 *)
690 if ${auto} ; then
691 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
692 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
693 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
694 # some SONAMEs are funky: they encode a version before the .so
695 if [[ ${tlib} != ${lib}* ]] ; then
696 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
697 fi
698 rm -f "${ED}"/${libdir}/${lib}
699 else
700 tlib=${lib}
701 fi
342 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 702 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
343 /* GNU ld script 703 /* GNU ld script
344 Since Gentoo has critical dynamic libraries 704 Since Gentoo has critical dynamic libraries in /lib, and the static versions
345 in /lib, and the static versions in /usr/lib, 705 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
346 we need to have a "fake" dynamic lib in /usr/lib, 706 run into linking problems. This "fake" dynamic lib is a linker script that
347 otherwise we run into linking problems. 707 redirects the linker to the real lib. And yes, this works in the cross-
708 compiling scenario as the sysroot-ed linker will prepend the real path.
348 709
349 See bug http://bugs.gentoo.org/4411 for more info. 710 See bug http://bugs.gentoo.org/4411 for more info.
350 */ 711 */
351 ${output_format} 712 ${output_format}
352 GROUP ( /${libdir}/${lib} ) 713 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
353 END_LDSCRIPT 714 END_LDSCRIPT
354 fi 715 ;;
716 esac
355 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" 717 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
356 done 718 done
357} 719}
720
721fi

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