/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.135 - (hide annotations) (download)
Mon Mar 16 21:12:27 2015 UTC (2 years, 10 months ago) by vapier
Branch: MAIN
Changes since 1.134: +67 -0 lines
tc-ld-is-gold/tc-ld-disable-gold: add helpers for detecting & disabling gold

1 vapier 1.134 # Copyright 1999-2015 Gentoo Foundation
2 vapier 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.134 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.133 2015/03/10 17:56:30 vapier Exp $
4 vapier 1.74
5     # @ECLASS: toolchain-funcs.eclass
6     # @MAINTAINER:
7     # Toolchain Ninjas <toolchain@gentoo.org>
8     # @BLURB: functions to query common info about the toolchain
9     # @DESCRIPTION:
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 vapier 1.1
16 ulm 1.127 if [[ -z ${_TOOLCHAIN_FUNCS_ECLASS} ]]; then
17     _TOOLCHAIN_FUNCS_ECLASS=1
18 vapier 1.109
19     inherit multilib
20 eradicator 1.34
21 vapier 1.105 # tc-getPROG <VAR [search vars]> <default> [tuple]
22     _tc-getPROG() {
23     local tuple=$1
24     local v var vars=$2
25     local prog=$3
26    
27     var=${vars%% *}
28     for v in ${vars} ; do
29     if [[ -n ${!v} ]] ; then
30 vapier 1.106 export ${var}="${!v}"
31 vapier 1.105 echo "${!v}"
32     return 0
33     fi
34     done
35 vapier 1.1
36 eradicator 1.35 local search=
37 vapier 1.105 [[ -n $4 ]] && search=$(type -p "$4-${prog}")
38     [[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}")
39 eradicator 1.35 [[ -n ${search} ]] && prog=${search##*/}
40 vapier 1.1
41 vapier 1.17 export ${var}=${prog}
42 vapier 1.1 echo "${!var}"
43     }
44 vapier 1.107 tc-getBUILD_PROG() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; }
45 vapier 1.105 tc-getPROG() { _tc-getPROG CHOST "$@"; }
46 vapier 1.1
47 vapier 1.74 # @FUNCTION: tc-getAR
48     # @USAGE: [toolchain prefix]
49     # @RETURN: name of the archiver
50 vapier 1.33 tc-getAR() { tc-getPROG AR ar "$@"; }
51 vapier 1.74 # @FUNCTION: tc-getAS
52     # @USAGE: [toolchain prefix]
53     # @RETURN: name of the assembler
54 vapier 1.33 tc-getAS() { tc-getPROG AS as "$@"; }
55 vapier 1.74 # @FUNCTION: tc-getCC
56     # @USAGE: [toolchain prefix]
57     # @RETURN: name of the C compiler
58 vapier 1.33 tc-getCC() { tc-getPROG CC gcc "$@"; }
59 vapier 1.74 # @FUNCTION: tc-getCPP
60     # @USAGE: [toolchain prefix]
61     # @RETURN: name of the C preprocessor
62 robbat2 1.58 tc-getCPP() { tc-getPROG CPP cpp "$@"; }
63 vapier 1.74 # @FUNCTION: tc-getCXX
64     # @USAGE: [toolchain prefix]
65     # @RETURN: name of the C++ compiler
66 vapier 1.33 tc-getCXX() { tc-getPROG CXX g++ "$@"; }
67 vapier 1.74 # @FUNCTION: tc-getLD
68     # @USAGE: [toolchain prefix]
69     # @RETURN: name of the linker
70 vapier 1.33 tc-getLD() { tc-getPROG LD ld "$@"; }
71 vapier 1.74 # @FUNCTION: tc-getSTRIP
72     # @USAGE: [toolchain prefix]
73     # @RETURN: name of the strip program
74 kanaka 1.59 tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
75 vapier 1.74 # @FUNCTION: tc-getNM
76     # @USAGE: [toolchain prefix]
77     # @RETURN: name of the symbol/object thingy
78 vapier 1.33 tc-getNM() { tc-getPROG NM nm "$@"; }
79 vapier 1.74 # @FUNCTION: tc-getRANLIB
80     # @USAGE: [toolchain prefix]
81     # @RETURN: name of the archiver indexer
82 vapier 1.33 tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
83 kumba 1.86 # @FUNCTION: tc-getOBJCOPY
84     # @USAGE: [toolchain prefix]
85     # @RETURN: name of the object copier
86     tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
87 vapier 1.134 # @FUNCTION: tc-getOBJDUMP
88     # @USAGE: [toolchain prefix]
89     # @RETURN: name of the object dumper
90     tc-getOBJDUMP() { tc-getPROG OBJDUMP objdump "$@"; }
91 vapier 1.74 # @FUNCTION: tc-getF77
92     # @USAGE: [toolchain prefix]
93     # @RETURN: name of the Fortran 77 compiler
94 dberkholz 1.101 tc-getF77() { tc-getPROG F77 gfortran "$@"; }
95 dberkholz 1.78 # @FUNCTION: tc-getFC
96 vapier 1.74 # @USAGE: [toolchain prefix]
97     # @RETURN: name of the Fortran 90 compiler
98 dberkholz 1.78 tc-getFC() { tc-getPROG FC gfortran "$@"; }
99 vapier 1.74 # @FUNCTION: tc-getGCJ
100     # @USAGE: [toolchain prefix]
101     # @RETURN: name of the java compiler
102 vapier 1.33 tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
103 vapier 1.96 # @FUNCTION: tc-getPKG_CONFIG
104     # @USAGE: [toolchain prefix]
105     # @RETURN: name of the pkg-config tool
106     tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
107 vapier 1.98 # @FUNCTION: tc-getRC
108     # @USAGE: [toolchain prefix]
109     # @RETURN: name of the Windows resource compiler
110     tc-getRC() { tc-getPROG RC windres "$@"; }
111     # @FUNCTION: tc-getDLLWRAP
112     # @USAGE: [toolchain prefix]
113     # @RETURN: name of the Windows dllwrap utility
114     tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
115 vapier 1.1
116 vapier 1.107 # @FUNCTION: tc-getBUILD_AR
117     # @USAGE: [toolchain prefix]
118     # @RETURN: name of the archiver for building binaries to run on the build machine
119     tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
120     # @FUNCTION: tc-getBUILD_AS
121     # @USAGE: [toolchain prefix]
122     # @RETURN: name of the assembler for building binaries to run on the build machine
123     tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
124 vapier 1.74 # @FUNCTION: tc-getBUILD_CC
125     # @USAGE: [toolchain prefix]
126     # @RETURN: name of the C compiler for building binaries to run on the build machine
127 vapier 1.107 tc-getBUILD_CC() { tc-getBUILD_PROG CC gcc "$@"; }
128 vapier 1.105 # @FUNCTION: tc-getBUILD_CPP
129     # @USAGE: [toolchain prefix]
130     # @RETURN: name of the C preprocessor for building binaries to run on the build machine
131 vapier 1.107 tc-getBUILD_CPP() { tc-getBUILD_PROG CPP cpp "$@"; }
132 vapier 1.105 # @FUNCTION: tc-getBUILD_CXX
133     # @USAGE: [toolchain prefix]
134     # @RETURN: name of the C++ compiler for building binaries to run on the build machine
135 vapier 1.107 tc-getBUILD_CXX() { tc-getBUILD_PROG CXX g++ "$@"; }
136     # @FUNCTION: tc-getBUILD_LD
137     # @USAGE: [toolchain prefix]
138     # @RETURN: name of the linker for building binaries to run on the build machine
139     tc-getBUILD_LD() { tc-getBUILD_PROG LD ld "$@"; }
140     # @FUNCTION: tc-getBUILD_STRIP
141     # @USAGE: [toolchain prefix]
142     # @RETURN: name of the strip program for building binaries to run on the build machine
143     tc-getBUILD_STRIP() { tc-getBUILD_PROG STRIP strip "$@"; }
144     # @FUNCTION: tc-getBUILD_NM
145     # @USAGE: [toolchain prefix]
146     # @RETURN: name of the symbol/object thingy for building binaries to run on the build machine
147     tc-getBUILD_NM() { tc-getBUILD_PROG NM nm "$@"; }
148     # @FUNCTION: tc-getBUILD_RANLIB
149     # @USAGE: [toolchain prefix]
150     # @RETURN: name of the archiver indexer for building binaries to run on the build machine
151     tc-getBUILD_RANLIB() { tc-getBUILD_PROG RANLIB ranlib "$@"; }
152     # @FUNCTION: tc-getBUILD_OBJCOPY
153     # @USAGE: [toolchain prefix]
154     # @RETURN: name of the object copier for building binaries to run on the build machine
155     tc-getBUILD_OBJCOPY() { tc-getBUILD_PROG OBJCOPY objcopy "$@"; }
156     # @FUNCTION: tc-getBUILD_PKG_CONFIG
157     # @USAGE: [toolchain prefix]
158     # @RETURN: name of the pkg-config tool for building binaries to run on the build machine
159     tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
160 vapier 1.1
161 vapier 1.74 # @FUNCTION: tc-export
162     # @USAGE: <list of toolchain variables>
163     # @DESCRIPTION:
164     # Quick way to export a bunch of compiler vars at once.
165 vapier 1.10 tc-export() {
166     local var
167     for var in "$@" ; do
168 vapier 1.79 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
169 vapier 1.36 eval tc-get${var} > /dev/null
170 vapier 1.10 done
171     }
172    
173 vapier 1.74 # @FUNCTION: tc-is-cross-compiler
174     # @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
175 vapier 1.12 tc-is-cross-compiler() {
176 blueness 1.128 [[ ${CBUILD:-${CHOST}} != ${CHOST} ]]
177 vapier 1.12 }
178    
179 vapier 1.74 # @FUNCTION: tc-is-softfloat
180     # @DESCRIPTION:
181 vapier 1.65 # See if this toolchain is a softfloat based one.
182 vapier 1.74 # @CODE
183 vapier 1.65 # The possible return values:
184 vapier 1.111 # - only: the target is always softfloat (never had fpu)
185     # - yes: the target should support softfloat
186     # - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
187     # - no: the target doesn't support softfloat
188 vapier 1.74 # @CODE
189 vapier 1.65 # This allows us to react differently where packages accept
190     # softfloat flags in the case where support is optional, but
191     # rejects softfloat flags where the target always lacks an fpu.
192     tc-is-softfloat() {
193 vapier 1.110 local CTARGET=${CTARGET:-${CHOST}}
194 vapier 1.65 case ${CTARGET} in
195 vapier 1.66 bfin*|h8300*)
196 vapier 1.65 echo "only" ;;
197     *)
198 vapier 1.111 if [[ ${CTARGET//_/-} == *-softfloat-* ]] ; then
199     echo "yes"
200     elif [[ ${CTARGET//_/-} == *-softfp-* ]] ; then
201     echo "softfp"
202     else
203     echo "no"
204     fi
205 vapier 1.65 ;;
206     esac
207     }
208 vapier 1.1
209 grobian 1.91 # @FUNCTION: tc-is-static-only
210     # @DESCRIPTION:
211     # Return shell true if the target does not support shared libs, shell false
212     # otherwise.
213     tc-is-static-only() {
214     local host=${CTARGET:-${CHOST}}
215    
216     # *MiNT doesn't have shared libraries, only platform so far
217 blueness 1.128 [[ ${host} == *-mint* ]]
218 grobian 1.91 }
219    
220 vapier 1.112 # @FUNCTION: tc-export_build_env
221     # @USAGE: [compiler variables]
222     # @DESCRIPTION:
223     # Export common build related compiler settings.
224     tc-export_build_env() {
225     tc-export "$@"
226     : ${BUILD_CFLAGS:=-O1 -pipe}
227     : ${BUILD_CXXFLAGS:=-O1 -pipe}
228     : ${BUILD_CPPFLAGS:=}
229     : ${BUILD_LDFLAGS:=}
230     export BUILD_{C,CXX,CPP,LD}FLAGS
231 vapier 1.122
232     # Some packages use XXX_FOR_BUILD.
233     local v
234     for v in BUILD_{C,CXX,CPP,LD}FLAGS ; do
235     export ${v#BUILD_}_FOR_BUILD="${!v}"
236     done
237 vapier 1.112 }
238    
239 vapier 1.108 # @FUNCTION: tc-env_build
240     # @USAGE: <command> [command args]
241     # @INTERNAL
242     # @DESCRIPTION:
243     # Setup the compile environment to the build tools and then execute the
244     # specified command. We use tc-getBUILD_XX here so that we work with
245     # all of the semi-[non-]standard env vars like $BUILD_CC which often
246     # the target build system does not check.
247     tc-env_build() {
248 vapier 1.112 tc-export_build_env
249     CFLAGS=${BUILD_CFLAGS} \
250     CXXFLAGS=${BUILD_CXXFLAGS} \
251 vapier 1.108 CPPFLAGS=${BUILD_CPPFLAGS} \
252     LDFLAGS=${BUILD_LDFLAGS} \
253     AR=$(tc-getBUILD_AR) \
254     AS=$(tc-getBUILD_AS) \
255     CC=$(tc-getBUILD_CC) \
256     CPP=$(tc-getBUILD_CPP) \
257     CXX=$(tc-getBUILD_CXX) \
258     LD=$(tc-getBUILD_LD) \
259     NM=$(tc-getBUILD_NM) \
260     PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
261     RANLIB=$(tc-getBUILD_RANLIB) \
262     "$@"
263     }
264    
265     # @FUNCTION: econf_build
266     # @USAGE: [econf flags]
267     # @DESCRIPTION:
268     # Sometimes we need to locally build up some tools to run on CBUILD because
269     # the package has helper utils which are compiled+executed when compiling.
270     # This won't work when cross-compiling as the CHOST is set to a target which
271     # we cannot natively execute.
272     #
273     # For example, the python package will build up a local python binary using
274     # a portable build system (configure+make), but then use that binary to run
275     # local python scripts to build up other components of the overall python.
276     # We cannot rely on the python binary in $PATH as that often times will be
277     # a different version, or not even installed in the first place. Instead,
278     # we compile the code in a different directory to run on CBUILD, and then
279     # use that binary when compiling the main package to run on CHOST.
280     #
281     # For example, with newer EAPIs, you'd do something like:
282     # @CODE
283     # src_configure() {
284     # ECONF_SOURCE=${S}
285     # if tc-is-cross-compiler ; then
286     # mkdir "${WORKDIR}"/${CBUILD}
287     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
288     # econf_build --disable-some-unused-stuff
289     # popd >/dev/null
290     # fi
291     # ... normal build paths ...
292     # }
293     # src_compile() {
294     # if tc-is-cross-compiler ; then
295     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
296     # emake one-or-two-build-tools
297     # ln/mv build-tools to normal build paths in ${S}/
298     # popd >/dev/null
299     # fi
300     # ... normal build paths ...
301     # }
302     # @CODE
303     econf_build() {
304 vapier 1.133 local CBUILD=${CBUILD:-${CHOST}}
305     tc-env_build econf --build=${CBUILD} --host=${CBUILD} "$@"
306 vapier 1.108 }
307    
308 vapier 1.135 # @FUNCTION: tc-ld-is-gold
309     # @USAGE: [toolchain prefix]
310     # @DESCRIPTION:
311     # Return true if the current linker is set to gold.
312     tc-ld-is-gold() {
313     local out
314    
315     # First check the linker directly.
316     out=$($(tc-getLD "$@") --version 2>&1)
317     if [[ ${out} == *"GNU gold"* ]] ; then
318     return 0
319     fi
320    
321     # Then see if they're selecting gold via compiler flags.
322     # Note: We're assuming they're using LDFLAGS to hold the
323     # options and not CFLAGS/CXXFLAGS.
324     local base="${T}/test-tc-gold"
325     cat <<-EOF > "${base}.c"
326     int main() { return 0; }
327     EOF
328     out=$($(tc-getCC "$@") ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} -Wl,--version "${base}.c" -o "${base}" 2>&1)
329     rm -f "${base}"*
330     if [[ ${out} == *"GNU gold"* ]] ; then
331     return 0
332     fi
333    
334     # No gold here!
335     return 1
336     }
337    
338     # @FUNCTION: tc-ld-disable-gold
339     # @USAGE: [toolchain prefix]
340     # @DESCRIPTION:
341     # If the gold linker is currently selected, configure the compilation
342     # settings so that we use the older bfd linker instead.
343     tc-ld-disable-gold() {
344     if ! tc-ld-is-gold "$@" ; then
345     # They aren't using gold, so nothing to do!
346     return
347     fi
348    
349     ewarn "Forcing usage of the BFD linker instead of GOLD"
350    
351     # Set up LD to point directly to bfd if it's available.
352     local bfd_ld="$(tc-getLD "$@").bfd"
353     local path_ld=$(which "${bfd_ld}" 2>/dev/null)
354     [[ -e ${path_ld} ]] && export LD=${bfd_ld}
355    
356     # Set up LDFLAGS to select gold based on the gcc version.
357     local major=$(gcc-major-version "$@")
358     local minor=$(gcc-minor-version "$@")
359     if [[ ${major} -lt 4 ]] || [[ ${major} -eq 4 && ${minor} -lt 8 ]] ; then
360     # <=gcc-4.7 requires some coercion. Only works if bfd exists.
361     if [[ -e ${path_ld} ]] ; then
362     local d="${T}/bfd-linker"
363     mkdir -p "${d}"
364     ln -sf "${path_ld}" "${d}"/ld
365     export LDFLAGS="${LDFLAGS} -B${d}"
366     else
367     die "unable to locate a BFD linker to bypass gold"
368     fi
369     else
370     # gcc-4.8+ supports -fuse-ld directly.
371     export LDFLAGS="${LDFLAGS} -fuse-ld=bfd"
372     fi
373     }
374    
375 vapier 1.100 # @FUNCTION: tc-has-openmp
376     # @USAGE: [toolchain prefix]
377     # @DESCRIPTION:
378     # See if the toolchain supports OpenMP.
379     tc-has-openmp() {
380     local base="${T}/test-tc-openmp"
381     cat <<-EOF > "${base}.c"
382     #include <omp.h>
383     int main() {
384     int nthreads, tid, ret = 0;
385     #pragma omp parallel private(nthreads, tid)
386     {
387     tid = omp_get_thread_num();
388     nthreads = omp_get_num_threads(); ret += tid + nthreads;
389     }
390     return ret;
391     }
392     EOF
393     $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
394     local ret=$?
395     rm -f "${base}"*
396     return ${ret}
397     }
398    
399 vapier 1.97 # @FUNCTION: tc-has-tls
400     # @USAGE: [-s|-c|-l] [toolchain prefix]
401     # @DESCRIPTION:
402     # See if the toolchain supports thread local storage (TLS). Use -s to test the
403     # compiler, -c to also test the assembler, and -l to also test the C library
404     # (the default).
405     tc-has-tls() {
406     local base="${T}/test-tc-tls"
407     cat <<-EOF > "${base}.c"
408     int foo(int *i) {
409     static __thread int j = 0;
410     return *i ? j : *i;
411     }
412     EOF
413     local flags
414     case $1 in
415     -s) flags="-S";;
416     -c) flags="-c";;
417     -l) ;;
418     -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
419     esac
420     : ${flags:=-fPIC -shared -Wl,-z,defs}
421     [[ $1 == -* ]] && shift
422     $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
423     local ret=$?
424     rm -f "${base}"*
425     return ${ret}
426     }
427    
428 grobian 1.91
429 swegener 1.40 # Parse information from CBUILD/CHOST/CTARGET rather than
430 vapier 1.20 # use external variables from the profile.
431     tc-ninja_magic_to_arch() {
432 vapier 1.21 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
433 vapier 1.19
434     local type=$1
435     local host=$2
436 eradicator 1.25 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
437 vapier 1.19
438 axs 1.118 local KV=${KV:-${KV_FULL}}
439 axs 1.119 [[ ${type} == "kern" ]] && [[ -z ${KV} ]] && \
440     ewarn "QA: Kernel version could not be determined, please inherit kernel-2 or linux-info"
441 axs 1.118
442 vapier 1.19 case ${host} in
443 vapier 1.125 aarch64*) echo arm64;;
444 vapier 1.19 alpha*) echo alpha;;
445     arm*) echo arm;;
446 vapier 1.72 avr*) ninj avr32 avr;;
447 vapier 1.53 bfin*) ninj blackfin bfin;;
448 vapier 1.132 c6x*) echo c6x;;
449 vapier 1.47 cris*) echo cris;;
450 vapier 1.132 frv*) echo frv;;
451     hexagon*) echo hexagon;;
452 vapier 1.19 hppa*) ninj parisc hppa;;
453 vapier 1.75 i?86*)
454     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
455     # trees have been unified into 'x86'.
456 aballier 1.77 # FreeBSD still uses i386
457     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
458 vapier 1.75 echo i386
459     else
460     echo x86
461     fi
462     ;;
463 vapier 1.19 ia64*) echo ia64;;
464 vapier 1.23 m68*) echo m68k;;
465 vapier 1.132 metag*) echo metag;;
466     microblaze*) echo microblaze;;
467 vapier 1.19 mips*) echo mips;;
468 vapier 1.52 nios2*) echo nios2;;
469     nios*) echo nios;;
470 vapier 1.132 or32*) echo openrisc;;
471 vapier 1.49 powerpc*)
472 vapier 1.103 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
473     # have been unified into simply 'powerpc', but until 2.6.16,
474     # ppc32 is still using ARCH="ppc" as default
475     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
476     echo powerpc
477     elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
478     if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
479     echo powerpc
480     else
481     echo ppc
482     fi
483     elif [[ ${host} == powerpc64* ]] ; then
484     echo ppc64
485     elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
486     ninj ppc64 ppc
487     else
488     echo ppc
489     fi
490     ;;
491 vapier 1.131 riscv*) echo riscv;;
492 vapier 1.47 s390*) echo s390;;
493 vapier 1.132 score*) echo score;;
494 vapier 1.47 sh64*) ninj sh64 sh;;
495     sh*) echo sh;;
496 vapier 1.19 sparc64*) ninj sparc64 sparc;;
497 vapier 1.28 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
498     && ninj sparc64 sparc \
499     || echo sparc
500     ;;
501 vapier 1.121 tile*) echo tile;;
502 vapier 1.47 vax*) echo vax;;
503 aballier 1.104 x86_64*freebsd*) echo amd64;;
504 vapier 1.75 x86_64*)
505     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
506     # trees have been unified into 'x86'.
507     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
508     echo x86
509     else
510     ninj x86_64 amd64
511     fi
512     ;;
513 vapier 1.121 xtensa*) echo xtensa;;
514 vapier 1.73
515     # since our usage of tc-arch is largely concerned with
516     # normalizing inputs for testing ${CTARGET}, let's filter
517     # other cross targets (mingw and such) into the unknown.
518     *) echo unknown;;
519 vapier 1.19 esac
520     }
521 vapier 1.74 # @FUNCTION: tc-arch-kernel
522     # @USAGE: [toolchain prefix]
523     # @RETURN: name of the kernel arch according to the compiler target
524 vapier 1.20 tc-arch-kernel() {
525 vapier 1.74 tc-ninja_magic_to_arch kern "$@"
526 vapier 1.19 }
527 vapier 1.74 # @FUNCTION: tc-arch
528     # @USAGE: [toolchain prefix]
529     # @RETURN: name of the portage arch according to the compiler target
530 vapier 1.20 tc-arch() {
531 vapier 1.74 tc-ninja_magic_to_arch portage "$@"
532 vapier 1.19 }
533 vapier 1.74
534 robbat2 1.71 tc-endian() {
535     local host=$1
536     [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
537     host=${host%%-*}
538    
539     case ${host} in
540 vapier 1.116 aarch64*be) echo big;;
541     aarch64) echo little;;
542 robbat2 1.71 alpha*) echo big;;
543     arm*b*) echo big;;
544     arm*) echo little;;
545     cris*) echo little;;
546     hppa*) echo big;;
547     i?86*) echo little;;
548     ia64*) echo little;;
549     m68*) echo big;;
550     mips*l*) echo little;;
551     mips*) echo big;;
552 vapier 1.126 powerpc*le) echo little;;
553 robbat2 1.71 powerpc*) echo big;;
554     s390*) echo big;;
555     sh*b*) echo big;;
556     sh*) echo little;;
557     sparc*) echo big;;
558     x86_64*) echo little;;
559     *) echo wtf;;
560     esac
561     }
562 vapier 1.19
563 vapier 1.102 # Internal func. The first argument is the version info to expand.
564     # Query the preprocessor to improve compatibility across different
565     # compilers rather than maintaining a --version flag matrix. #335943
566     _gcc_fullversion() {
567     local ver="$1"; shift
568     set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
569     eval echo "$ver"
570     }
571    
572 vapier 1.74 # @FUNCTION: gcc-fullversion
573     # @RETURN: compiler version (major.minor.micro: [3.4.6])
574 vapier 1.1 gcc-fullversion() {
575 vapier 1.102 _gcc_fullversion '$1.$2.$3' "$@"
576 vapier 1.1 }
577 vapier 1.74 # @FUNCTION: gcc-version
578     # @RETURN: compiler version (major.minor: [3.4].6)
579 vapier 1.1 gcc-version() {
580 vapier 1.102 _gcc_fullversion '$1.$2' "$@"
581 vapier 1.1 }
582 vapier 1.74 # @FUNCTION: gcc-major-version
583     # @RETURN: major compiler version (major: [3].4.6)
584 vapier 1.1 gcc-major-version() {
585 vapier 1.102 _gcc_fullversion '$1' "$@"
586 vapier 1.1 }
587 vapier 1.74 # @FUNCTION: gcc-minor-version
588     # @RETURN: minor compiler version (minor: 3.[4].6)
589 vapier 1.1 gcc-minor-version() {
590 vapier 1.102 _gcc_fullversion '$2' "$@"
591 vapier 1.1 }
592 vapier 1.74 # @FUNCTION: gcc-micro-version
593     # @RETURN: micro compiler version (micro: 3.4.[6])
594 vapier 1.1 gcc-micro-version() {
595 vapier 1.102 _gcc_fullversion '$3' "$@"
596 vapier 1.1 }
597 vapier 1.74
598 kevquinn 1.68 # Returns the installation directory - internal toolchain
599     # function for use by _gcc-specs-exists (for flag-o-matic).
600     _gcc-install-dir() {
601 vapier 1.76 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
602 kevquinn 1.68 awk '$1=="install:" {print $2}')"
603     }
604     # Returns true if the indicated specs file exists - internal toolchain
605     # function for use by flag-o-matic.
606     _gcc-specs-exists() {
607     [[ -f $(_gcc-install-dir)/$1 ]]
608     }
609 kevquinn 1.41
610 kevquinn 1.68 # Returns requested gcc specs directive unprocessed - for used by
611     # gcc-specs-directive()
612 kevquinn 1.46 # Note; later specs normally overwrite earlier ones; however if a later
613     # spec starts with '+' then it appends.
614     # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
615 kevquinn 1.68 # as "Reading <file>", in order. Strictly speaking, if there's a
616     # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
617     # the same token anything from 'gcc -dumpspecs' is overridden by
618     # the contents of $(gcc_install_dir)/specs so the result is the
619     # same either way.
620     _gcc-specs-directive_raw() {
621 kevquinn 1.57 local cc=$(tc-getCC)
622     local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
623     ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
624 kevquinn 1.46 'BEGIN { pspec=""; spec=""; outside=1 }
625     $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
626 kevquinn 1.41 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
627 kevquinn 1.46 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
628     { spec=spec $0 }
629     END { print spec }'
630     return 0
631 kevquinn 1.41 }
632    
633 kevquinn 1.68 # Return the requested gcc specs directive, with all included
634     # specs expanded.
635     # Note, it does not check for inclusion loops, which cause it
636     # to never finish - but such loops are invalid for gcc and we're
637     # assuming gcc is operational.
638     gcc-specs-directive() {
639     local directive subdname subdirective
640     directive="$(_gcc-specs-directive_raw $1)"
641     while [[ ${directive} == *%\(*\)* ]]; do
642     subdname=${directive/*%\(}
643     subdname=${subdname/\)*}
644     subdirective="$(_gcc-specs-directive_raw ${subdname})"
645     directive="${directive//\%(${subdname})/${subdirective}}"
646     done
647     echo "${directive}"
648     return 0
649     }
650    
651 kevquinn 1.41 # Returns true if gcc sets relro
652     gcc-specs-relro() {
653     local directive
654     directive=$(gcc-specs-directive link_command)
655 blueness 1.128 [[ "${directive/\{!norelro:}" != "${directive}" ]]
656 kevquinn 1.41 }
657     # Returns true if gcc sets now
658     gcc-specs-now() {
659     local directive
660     directive=$(gcc-specs-directive link_command)
661 blueness 1.128 [[ "${directive/\{!nonow:}" != "${directive}" ]]
662 kevquinn 1.41 }
663     # Returns true if gcc builds PIEs
664     gcc-specs-pie() {
665     local directive
666     directive=$(gcc-specs-directive cc1)
667 blueness 1.128 [[ "${directive/\{!nopie:}" != "${directive}" ]]
668 kevquinn 1.41 }
669     # Returns true if gcc builds with the stack protector
670     gcc-specs-ssp() {
671     local directive
672     directive=$(gcc-specs-directive cc1)
673 blueness 1.128 [[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]]
674 kevquinn 1.41 }
675 kevquinn 1.46 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
676     gcc-specs-ssp-to-all() {
677     local directive
678     directive=$(gcc-specs-directive cc1)
679 blueness 1.128 [[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]]
680 kevquinn 1.46 }
681 gengor 1.80 # Returns true if gcc builds with fno-strict-overflow
682     gcc-specs-nostrict() {
683     local directive
684     directive=$(gcc-specs-directive cc1)
685 blueness 1.128 [[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]
686 gengor 1.80 }
687 blueness 1.129 # Returns true if gcc builds with fstack-check
688     gcc-specs-stack-check() {
689     local directive
690     directive=$(gcc-specs-directive cc1)
691     [[ "${directive/\{!fno-stack-check:}" != "${directive}" ]]
692     }
693 vapier 1.60
694    
695 vapier 1.74 # @FUNCTION: gen_usr_ldscript
696 vapier 1.85 # @USAGE: [-a] <list of libs to create linker scripts for>
697 vapier 1.74 # @DESCRIPTION:
698 vapier 1.60 # This function generate linker scripts in /usr/lib for dynamic
699     # libs in /lib. This is to fix linking problems when you have
700     # the .so in /lib, and the .a in /usr/lib. What happens is that
701     # in some cases when linking dynamic, the .a in /usr/lib is used
702     # instead of the .so in /lib due to gcc/libtool tweaking ld's
703 vapier 1.74 # library search path. This causes many builds to fail.
704 vapier 1.60 # See bug #4411 for more info.
705     #
706     # Note that you should in general use the unversioned name of
707 vapier 1.74 # the library (libfoo.so), as ldconfig should usually update it
708     # correctly to point to the latest version of the library present.
709 vapier 1.70 gen_usr_ldscript() {
710 vapier 1.85 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
711 grobian 1.91 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
712    
713     tc-is-static-only && return
714    
715 vapier 1.113 # Eventually we'd like to get rid of this func completely #417451
716     case ${CTARGET:-${CHOST}} in
717     *-darwin*) ;;
718 vapier 1.115 *linux*|*-freebsd*|*-openbsd*|*-netbsd*)
719 vapier 1.114 use prefix && return 0 ;;
720 vapier 1.113 *) return 0 ;;
721     esac
722    
723 vapier 1.60 # Just make sure it exists
724     dodir /usr/${libdir}
725    
726 vapier 1.85 if [[ $1 == "-a" ]] ; then
727     auto=true
728     shift
729     dodir /${libdir}
730     fi
731    
732 vapier 1.60 # OUTPUT_FORMAT gives hints to the linker as to what binary format
733     # is referenced ... makes multilib saner
734 vapier 1.123 local flags=( ${CFLAGS} ${LDFLAGS} -Wl,--verbose )
735     if $(tc-getLD) --version | grep -q 'GNU gold' ; then
736     # If they're using gold, manually invoke the old bfd. #487696
737     local d="${T}/bfd-linker"
738     mkdir -p "${d}"
739     ln -sf $(which ${CHOST}-ld.bfd) "${d}"/ld
740     flags+=( -B"${d}" )
741     fi
742     output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
743 vapier 1.60 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
744    
745     for lib in "$@" ; do
746 grobian 1.91 local tlib
747     if ${auto} ; then
748     lib="lib${lib}${suffix}"
749 grobian 1.90 else
750 grobian 1.91 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
751     # This especially is for AIX where $(get_libname) can return ".a",
752     # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
753     [[ -r ${ED}/${libdir}/${lib} ]] || continue
754     #TODO: better die here?
755     fi
756    
757     case ${CTARGET:-${CHOST}} in
758     *-darwin*)
759 vapier 1.85 if ${auto} ; then
760 grobian 1.91 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
761     else
762     tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
763     fi
764     [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
765     tlib=${tlib##*/}
766    
767     if ${auto} ; then
768     mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
769 grobian 1.92 # some install_names are funky: they encode a version
770     if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
771     mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
772     fi
773 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
774     fi
775    
776     # Mach-O files have an id, which is like a soname, it tells how
777     # another object linking against this lib should reference it.
778     # Since we moved the lib from usr/lib into lib this reference is
779     # wrong. Hence, we update it here. We don't configure with
780     # libdir=/lib because that messes up libtool files.
781     # Make sure we don't lose the specific version, so just modify the
782     # existing install_name
783 grobian 1.94 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
784 grobian 1.95 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
785 grobian 1.94 local nowrite=yes
786     fi
787 grobian 1.91 install_name_tool \
788     -id "${EPREFIX}"/${libdir}/${tlib} \
789 grobian 1.94 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
790 grobian 1.95 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
791 grobian 1.91 # Now as we don't use GNU binutils and our linker doesn't
792     # understand linker scripts, just create a symlink.
793     pushd "${ED}/usr/${libdir}" > /dev/null
794     ln -snf "../../${libdir}/${tlib}" "${lib}"
795     popd > /dev/null
796     ;;
797 vapier 1.114 *)
798 grobian 1.91 if ${auto} ; then
799     tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
800     [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
801     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
802 vapier 1.88 # some SONAMEs are funky: they encode a version before the .so
803     if [[ ${tlib} != ${lib}* ]] ; then
804 grobian 1.91 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
805 vapier 1.88 fi
806 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
807 vapier 1.85 else
808     tlib=${lib}
809     fi
810 grobian 1.91 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
811 grobian 1.61 /* GNU ld script
812 vapier 1.87 Since Gentoo has critical dynamic libraries in /lib, and the static versions
813     in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
814     run into linking problems. This "fake" dynamic lib is a linker script that
815     redirects the linker to the real lib. And yes, this works in the cross-
816     compiling scenario as the sysroot-ed linker will prepend the real path.
817 grobian 1.61
818     See bug http://bugs.gentoo.org/4411 for more info.
819     */
820     ${output_format}
821 grobian 1.91 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
822 grobian 1.61 END_LDSCRIPT
823 grobian 1.91 ;;
824     esac
825     fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
826 vapier 1.60 done
827     }
828 vapier 1.109
829     fi

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