/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.109 - (hide annotations) (download)
Sat Dec 10 19:45:00 2011 UTC (2 years, 8 months ago) by vapier
Branch: MAIN
Changes since 1.108: +7 -3 lines
avoid multiple inclusions when possible to speed caching up

1 vapier 1.108 # Copyright 1999-2011 Gentoo Foundation
2 vapier 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.109 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.108 2011/10/17 19:11:49 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 vapier 1.109 if [[ ${___ECLASS_ONCE_TOOLCHAIN_FUNCS} != "recur -_+^+_- spank" ]] ; then
17     ___ECLASS_ONCE_TOOLCHAIN_FUNCS="recur -_+^+_- spank"
18    
19     inherit multilib
20 eradicator 1.34
21 vapier 1.1 DESCRIPTION="Based on the ${ECLASS} eclass"
22    
23 vapier 1.105 # tc-getPROG <VAR [search vars]> <default> [tuple]
24     _tc-getPROG() {
25     local tuple=$1
26     local v var vars=$2
27     local prog=$3
28    
29     var=${vars%% *}
30     for v in ${vars} ; do
31     if [[ -n ${!v} ]] ; then
32 vapier 1.106 export ${var}="${!v}"
33 vapier 1.105 echo "${!v}"
34     return 0
35     fi
36     done
37 vapier 1.1
38 eradicator 1.35 local search=
39 vapier 1.105 [[ -n $4 ]] && search=$(type -p "$4-${prog}")
40     [[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}")
41 eradicator 1.35 [[ -n ${search} ]] && prog=${search##*/}
42 vapier 1.1
43 vapier 1.17 export ${var}=${prog}
44 vapier 1.1 echo "${!var}"
45     }
46 vapier 1.107 tc-getBUILD_PROG() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; }
47 vapier 1.105 tc-getPROG() { _tc-getPROG CHOST "$@"; }
48 vapier 1.1
49 vapier 1.74 # @FUNCTION: tc-getAR
50     # @USAGE: [toolchain prefix]
51     # @RETURN: name of the archiver
52 vapier 1.33 tc-getAR() { tc-getPROG AR ar "$@"; }
53 vapier 1.74 # @FUNCTION: tc-getAS
54     # @USAGE: [toolchain prefix]
55     # @RETURN: name of the assembler
56 vapier 1.33 tc-getAS() { tc-getPROG AS as "$@"; }
57 vapier 1.74 # @FUNCTION: tc-getCC
58     # @USAGE: [toolchain prefix]
59     # @RETURN: name of the C compiler
60 vapier 1.33 tc-getCC() { tc-getPROG CC gcc "$@"; }
61 vapier 1.74 # @FUNCTION: tc-getCPP
62     # @USAGE: [toolchain prefix]
63     # @RETURN: name of the C preprocessor
64 robbat2 1.58 tc-getCPP() { tc-getPROG CPP cpp "$@"; }
65 vapier 1.74 # @FUNCTION: tc-getCXX
66     # @USAGE: [toolchain prefix]
67     # @RETURN: name of the C++ compiler
68 vapier 1.33 tc-getCXX() { tc-getPROG CXX g++ "$@"; }
69 vapier 1.74 # @FUNCTION: tc-getLD
70     # @USAGE: [toolchain prefix]
71     # @RETURN: name of the linker
72 vapier 1.33 tc-getLD() { tc-getPROG LD ld "$@"; }
73 vapier 1.74 # @FUNCTION: tc-getSTRIP
74     # @USAGE: [toolchain prefix]
75     # @RETURN: name of the strip program
76 kanaka 1.59 tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
77 vapier 1.74 # @FUNCTION: tc-getNM
78     # @USAGE: [toolchain prefix]
79     # @RETURN: name of the symbol/object thingy
80 vapier 1.33 tc-getNM() { tc-getPROG NM nm "$@"; }
81 vapier 1.74 # @FUNCTION: tc-getRANLIB
82     # @USAGE: [toolchain prefix]
83     # @RETURN: name of the archiver indexer
84 vapier 1.33 tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
85 kumba 1.86 # @FUNCTION: tc-getOBJCOPY
86     # @USAGE: [toolchain prefix]
87     # @RETURN: name of the object copier
88     tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
89 vapier 1.74 # @FUNCTION: tc-getF77
90     # @USAGE: [toolchain prefix]
91     # @RETURN: name of the Fortran 77 compiler
92 dberkholz 1.101 tc-getF77() { tc-getPROG F77 gfortran "$@"; }
93 dberkholz 1.78 # @FUNCTION: tc-getFC
94 vapier 1.74 # @USAGE: [toolchain prefix]
95     # @RETURN: name of the Fortran 90 compiler
96 dberkholz 1.78 tc-getFC() { tc-getPROG FC gfortran "$@"; }
97 vapier 1.74 # @FUNCTION: tc-getGCJ
98     # @USAGE: [toolchain prefix]
99     # @RETURN: name of the java compiler
100 vapier 1.33 tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
101 vapier 1.96 # @FUNCTION: tc-getPKG_CONFIG
102     # @USAGE: [toolchain prefix]
103     # @RETURN: name of the pkg-config tool
104     tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
105 vapier 1.98 # @FUNCTION: tc-getRC
106     # @USAGE: [toolchain prefix]
107     # @RETURN: name of the Windows resource compiler
108     tc-getRC() { tc-getPROG RC windres "$@"; }
109     # @FUNCTION: tc-getDLLWRAP
110     # @USAGE: [toolchain prefix]
111     # @RETURN: name of the Windows dllwrap utility
112     tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
113 vapier 1.1
114 vapier 1.107 # @FUNCTION: tc-getBUILD_AR
115     # @USAGE: [toolchain prefix]
116     # @RETURN: name of the archiver for building binaries to run on the build machine
117     tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
118     # @FUNCTION: tc-getBUILD_AS
119     # @USAGE: [toolchain prefix]
120     # @RETURN: name of the assembler for building binaries to run on the build machine
121     tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
122 vapier 1.74 # @FUNCTION: tc-getBUILD_CC
123     # @USAGE: [toolchain prefix]
124     # @RETURN: name of the C compiler for building binaries to run on the build machine
125 vapier 1.107 tc-getBUILD_CC() { tc-getBUILD_PROG CC gcc "$@"; }
126 vapier 1.105 # @FUNCTION: tc-getBUILD_CPP
127     # @USAGE: [toolchain prefix]
128     # @RETURN: name of the C preprocessor for building binaries to run on the build machine
129 vapier 1.107 tc-getBUILD_CPP() { tc-getBUILD_PROG CPP cpp "$@"; }
130 vapier 1.105 # @FUNCTION: tc-getBUILD_CXX
131     # @USAGE: [toolchain prefix]
132     # @RETURN: name of the C++ compiler for building binaries to run on the build machine
133 vapier 1.107 tc-getBUILD_CXX() { tc-getBUILD_PROG CXX g++ "$@"; }
134     # @FUNCTION: tc-getBUILD_LD
135     # @USAGE: [toolchain prefix]
136     # @RETURN: name of the linker for building binaries to run on the build machine
137     tc-getBUILD_LD() { tc-getBUILD_PROG LD ld "$@"; }
138     # @FUNCTION: tc-getBUILD_STRIP
139     # @USAGE: [toolchain prefix]
140     # @RETURN: name of the strip program for building binaries to run on the build machine
141     tc-getBUILD_STRIP() { tc-getBUILD_PROG STRIP strip "$@"; }
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
145     tc-getBUILD_NM() { tc-getBUILD_PROG NM nm "$@"; }
146     # @FUNCTION: tc-getBUILD_RANLIB
147     # @USAGE: [toolchain prefix]
148     # @RETURN: name of the archiver indexer for building binaries to run on the build machine
149     tc-getBUILD_RANLIB() { tc-getBUILD_PROG RANLIB ranlib "$@"; }
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
153     tc-getBUILD_OBJCOPY() { tc-getBUILD_PROG OBJCOPY objcopy "$@"; }
154     # @FUNCTION: tc-getBUILD_PKG_CONFIG
155     # @USAGE: [toolchain prefix]
156     # @RETURN: name of the pkg-config tool for building binaries to run on the build machine
157     tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
158 vapier 1.1
159 vapier 1.74 # @FUNCTION: tc-export
160     # @USAGE: <list of toolchain variables>
161     # @DESCRIPTION:
162     # Quick way to export a bunch of compiler vars at once.
163 vapier 1.10 tc-export() {
164     local var
165     for var in "$@" ; do
166 vapier 1.79 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
167 vapier 1.36 eval tc-get${var} > /dev/null
168 vapier 1.10 done
169     }
170    
171 vapier 1.74 # @FUNCTION: tc-is-cross-compiler
172     # @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
173 vapier 1.12 tc-is-cross-compiler() {
174 vapier 1.43 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
175 vapier 1.12 }
176    
177 vapier 1.74 # @FUNCTION: tc-is-softfloat
178     # @DESCRIPTION:
179 vapier 1.65 # See if this toolchain is a softfloat based one.
180 vapier 1.74 # @CODE
181 vapier 1.65 # The possible return values:
182     # - only: the target is always softfloat (never had fpu)
183     # - yes: the target should support softfloat
184 armin76 1.99 # - no: the target doesn't support softfloat
185 vapier 1.74 # @CODE
186 vapier 1.65 # This allows us to react differently where packages accept
187     # softfloat flags in the case where support is optional, but
188     # rejects softfloat flags where the target always lacks an fpu.
189     tc-is-softfloat() {
190     case ${CTARGET} in
191 vapier 1.66 bfin*|h8300*)
192 vapier 1.65 echo "only" ;;
193     *)
194     [[ ${CTARGET//_/-} == *-softfloat-* ]] \
195     && echo "yes" \
196     || echo "no"
197     ;;
198     esac
199     }
200 vapier 1.1
201 armin76 1.99 # @FUNCTION: tc-is-hardfloat
202     # @DESCRIPTION:
203     # See if this toolchain is a hardfloat based one.
204     # @CODE
205     # The possible return values:
206     # - yes: the target should support hardfloat
207     # - no: the target doesn't support hardfloat
208     tc-is-hardfloat() {
209     [[ ${CTARGET//_/-} == *-hardfloat-* ]] \
210     && echo "yes" \
211     || echo "no"
212     }
213    
214 grobian 1.91 # @FUNCTION: tc-is-static-only
215     # @DESCRIPTION:
216     # Return shell true if the target does not support shared libs, shell false
217     # otherwise.
218     tc-is-static-only() {
219     local host=${CTARGET:-${CHOST}}
220    
221     # *MiNT doesn't have shared libraries, only platform so far
222     return $([[ ${host} == *-mint* ]])
223     }
224    
225 vapier 1.108 # @FUNCTION: tc-env_build
226     # @USAGE: <command> [command args]
227     # @INTERNAL
228     # @DESCRIPTION:
229     # Setup the compile environment to the build tools and then execute the
230     # specified command. We use tc-getBUILD_XX here so that we work with
231     # all of the semi-[non-]standard env vars like $BUILD_CC which often
232     # the target build system does not check.
233     tc-env_build() {
234     CFLAGS=${BUILD_CFLAGS:--O1 -pipe} \
235     CXXFLAGS=${BUILD_CXXFLAGS:--O1 -pipe} \
236     CPPFLAGS=${BUILD_CPPFLAGS} \
237     LDFLAGS=${BUILD_LDFLAGS} \
238     AR=$(tc-getBUILD_AR) \
239     AS=$(tc-getBUILD_AS) \
240     CC=$(tc-getBUILD_CC) \
241     CPP=$(tc-getBUILD_CPP) \
242     CXX=$(tc-getBUILD_CXX) \
243     LD=$(tc-getBUILD_LD) \
244     NM=$(tc-getBUILD_NM) \
245     PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
246     RANLIB=$(tc-getBUILD_RANLIB) \
247     "$@"
248     }
249    
250     # @FUNCTION: econf_build
251     # @USAGE: [econf flags]
252     # @DESCRIPTION:
253     # Sometimes we need to locally build up some tools to run on CBUILD because
254     # the package has helper utils which are compiled+executed when compiling.
255     # This won't work when cross-compiling as the CHOST is set to a target which
256     # we cannot natively execute.
257     #
258     # For example, the python package will build up a local python binary using
259     # a portable build system (configure+make), but then use that binary to run
260     # local python scripts to build up other components of the overall python.
261     # We cannot rely on the python binary in $PATH as that often times will be
262     # a different version, or not even installed in the first place. Instead,
263     # we compile the code in a different directory to run on CBUILD, and then
264     # use that binary when compiling the main package to run on CHOST.
265     #
266     # For example, with newer EAPIs, you'd do something like:
267     # @CODE
268     # src_configure() {
269     # ECONF_SOURCE=${S}
270     # if tc-is-cross-compiler ; then
271     # mkdir "${WORKDIR}"/${CBUILD}
272     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
273     # econf_build --disable-some-unused-stuff
274     # popd >/dev/null
275     # fi
276     # ... normal build paths ...
277     # }
278     # src_compile() {
279     # if tc-is-cross-compiler ; then
280     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
281     # emake one-or-two-build-tools
282     # ln/mv build-tools to normal build paths in ${S}/
283     # popd >/dev/null
284     # fi
285     # ... normal build paths ...
286     # }
287     # @CODE
288     econf_build() {
289     tc-env_build econf --build=${CBUILD:-${CHOST}} "$@"
290     }
291    
292 vapier 1.100 # @FUNCTION: tc-has-openmp
293     # @USAGE: [toolchain prefix]
294     # @DESCRIPTION:
295     # See if the toolchain supports OpenMP.
296     tc-has-openmp() {
297     local base="${T}/test-tc-openmp"
298     cat <<-EOF > "${base}.c"
299     #include <omp.h>
300     int main() {
301     int nthreads, tid, ret = 0;
302     #pragma omp parallel private(nthreads, tid)
303     {
304     tid = omp_get_thread_num();
305     nthreads = omp_get_num_threads(); ret += tid + nthreads;
306     }
307     return ret;
308     }
309     EOF
310     $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
311     local ret=$?
312     rm -f "${base}"*
313     return ${ret}
314     }
315    
316 vapier 1.97 # @FUNCTION: tc-has-tls
317     # @USAGE: [-s|-c|-l] [toolchain prefix]
318     # @DESCRIPTION:
319     # See if the toolchain supports thread local storage (TLS). Use -s to test the
320     # compiler, -c to also test the assembler, and -l to also test the C library
321     # (the default).
322     tc-has-tls() {
323     local base="${T}/test-tc-tls"
324     cat <<-EOF > "${base}.c"
325     int foo(int *i) {
326     static __thread int j = 0;
327     return *i ? j : *i;
328     }
329     EOF
330     local flags
331     case $1 in
332     -s) flags="-S";;
333     -c) flags="-c";;
334     -l) ;;
335     -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
336     esac
337     : ${flags:=-fPIC -shared -Wl,-z,defs}
338     [[ $1 == -* ]] && shift
339     $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
340     local ret=$?
341     rm -f "${base}"*
342     return ${ret}
343     }
344    
345 grobian 1.91
346 swegener 1.40 # Parse information from CBUILD/CHOST/CTARGET rather than
347 vapier 1.20 # use external variables from the profile.
348     tc-ninja_magic_to_arch() {
349 vapier 1.21 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
350 vapier 1.19
351     local type=$1
352     local host=$2
353 eradicator 1.25 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
354 vapier 1.19
355     case ${host} in
356     alpha*) echo alpha;;
357     arm*) echo arm;;
358 vapier 1.72 avr*) ninj avr32 avr;;
359 vapier 1.53 bfin*) ninj blackfin bfin;;
360 vapier 1.47 cris*) echo cris;;
361 vapier 1.19 hppa*) ninj parisc hppa;;
362 vapier 1.75 i?86*)
363     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
364     # trees have been unified into 'x86'.
365 aballier 1.77 # FreeBSD still uses i386
366     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
367 vapier 1.75 echo i386
368     else
369     echo x86
370     fi
371     ;;
372 vapier 1.19 ia64*) echo ia64;;
373 vapier 1.23 m68*) echo m68k;;
374 vapier 1.19 mips*) echo mips;;
375 vapier 1.52 nios2*) echo nios2;;
376     nios*) echo nios;;
377 vapier 1.49 powerpc*)
378 vapier 1.103 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
379     # have been unified into simply 'powerpc', but until 2.6.16,
380     # ppc32 is still using ARCH="ppc" as default
381     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
382     echo powerpc
383     elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
384     if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
385     echo powerpc
386     else
387     echo ppc
388     fi
389     elif [[ ${host} == powerpc64* ]] ; then
390     echo ppc64
391     elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
392     ninj ppc64 ppc
393     else
394     echo ppc
395     fi
396     ;;
397 vapier 1.47 s390*) echo s390;;
398     sh64*) ninj sh64 sh;;
399     sh*) echo sh;;
400 vapier 1.19 sparc64*) ninj sparc64 sparc;;
401 vapier 1.28 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
402     && ninj sparc64 sparc \
403     || echo sparc
404     ;;
405 vapier 1.47 vax*) echo vax;;
406 aballier 1.104 x86_64*freebsd*) echo amd64;;
407 vapier 1.75 x86_64*)
408     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
409     # trees have been unified into 'x86'.
410     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
411     echo x86
412     else
413     ninj x86_64 amd64
414     fi
415     ;;
416 vapier 1.73
417     # since our usage of tc-arch is largely concerned with
418     # normalizing inputs for testing ${CTARGET}, let's filter
419     # other cross targets (mingw and such) into the unknown.
420     *) echo unknown;;
421 vapier 1.19 esac
422     }
423 vapier 1.74 # @FUNCTION: tc-arch-kernel
424     # @USAGE: [toolchain prefix]
425     # @RETURN: name of the kernel arch according to the compiler target
426 vapier 1.20 tc-arch-kernel() {
427 vapier 1.74 tc-ninja_magic_to_arch kern "$@"
428 vapier 1.19 }
429 vapier 1.74 # @FUNCTION: tc-arch
430     # @USAGE: [toolchain prefix]
431     # @RETURN: name of the portage arch according to the compiler target
432 vapier 1.20 tc-arch() {
433 vapier 1.74 tc-ninja_magic_to_arch portage "$@"
434 vapier 1.19 }
435 vapier 1.74
436 robbat2 1.71 tc-endian() {
437     local host=$1
438     [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
439     host=${host%%-*}
440    
441     case ${host} in
442     alpha*) echo big;;
443     arm*b*) echo big;;
444     arm*) echo little;;
445     cris*) echo little;;
446     hppa*) echo big;;
447     i?86*) echo little;;
448     ia64*) echo little;;
449     m68*) echo big;;
450     mips*l*) echo little;;
451     mips*) echo big;;
452     powerpc*) echo big;;
453     s390*) echo big;;
454     sh*b*) echo big;;
455     sh*) echo little;;
456     sparc*) echo big;;
457     x86_64*) echo little;;
458     *) echo wtf;;
459     esac
460     }
461 vapier 1.19
462 vapier 1.102 # Internal func. The first argument is the version info to expand.
463     # Query the preprocessor to improve compatibility across different
464     # compilers rather than maintaining a --version flag matrix. #335943
465     _gcc_fullversion() {
466     local ver="$1"; shift
467     set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
468     eval echo "$ver"
469     }
470    
471 vapier 1.74 # @FUNCTION: gcc-fullversion
472     # @RETURN: compiler version (major.minor.micro: [3.4.6])
473 vapier 1.1 gcc-fullversion() {
474 vapier 1.102 _gcc_fullversion '$1.$2.$3' "$@"
475 vapier 1.1 }
476 vapier 1.74 # @FUNCTION: gcc-version
477     # @RETURN: compiler version (major.minor: [3.4].6)
478 vapier 1.1 gcc-version() {
479 vapier 1.102 _gcc_fullversion '$1.$2' "$@"
480 vapier 1.1 }
481 vapier 1.74 # @FUNCTION: gcc-major-version
482     # @RETURN: major compiler version (major: [3].4.6)
483 vapier 1.1 gcc-major-version() {
484 vapier 1.102 _gcc_fullversion '$1' "$@"
485 vapier 1.1 }
486 vapier 1.74 # @FUNCTION: gcc-minor-version
487     # @RETURN: minor compiler version (minor: 3.[4].6)
488 vapier 1.1 gcc-minor-version() {
489 vapier 1.102 _gcc_fullversion '$2' "$@"
490 vapier 1.1 }
491 vapier 1.74 # @FUNCTION: gcc-micro-version
492     # @RETURN: micro compiler version (micro: 3.4.[6])
493 vapier 1.1 gcc-micro-version() {
494 vapier 1.102 _gcc_fullversion '$3' "$@"
495 vapier 1.1 }
496 vapier 1.74
497 kevquinn 1.68 # Returns the installation directory - internal toolchain
498     # function for use by _gcc-specs-exists (for flag-o-matic).
499     _gcc-install-dir() {
500 vapier 1.76 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
501 kevquinn 1.68 awk '$1=="install:" {print $2}')"
502     }
503     # Returns true if the indicated specs file exists - internal toolchain
504     # function for use by flag-o-matic.
505     _gcc-specs-exists() {
506     [[ -f $(_gcc-install-dir)/$1 ]]
507     }
508 kevquinn 1.41
509 kevquinn 1.68 # Returns requested gcc specs directive unprocessed - for used by
510     # gcc-specs-directive()
511 kevquinn 1.46 # Note; later specs normally overwrite earlier ones; however if a later
512     # spec starts with '+' then it appends.
513     # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
514 kevquinn 1.68 # as "Reading <file>", in order. Strictly speaking, if there's a
515     # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
516     # the same token anything from 'gcc -dumpspecs' is overridden by
517     # the contents of $(gcc_install_dir)/specs so the result is the
518     # same either way.
519     _gcc-specs-directive_raw() {
520 kevquinn 1.57 local cc=$(tc-getCC)
521     local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
522     ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
523 kevquinn 1.46 'BEGIN { pspec=""; spec=""; outside=1 }
524     $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
525 kevquinn 1.41 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
526 kevquinn 1.46 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
527     { spec=spec $0 }
528     END { print spec }'
529     return 0
530 kevquinn 1.41 }
531    
532 kevquinn 1.68 # Return the requested gcc specs directive, with all included
533     # specs expanded.
534     # Note, it does not check for inclusion loops, which cause it
535     # to never finish - but such loops are invalid for gcc and we're
536     # assuming gcc is operational.
537     gcc-specs-directive() {
538     local directive subdname subdirective
539     directive="$(_gcc-specs-directive_raw $1)"
540     while [[ ${directive} == *%\(*\)* ]]; do
541     subdname=${directive/*%\(}
542     subdname=${subdname/\)*}
543     subdirective="$(_gcc-specs-directive_raw ${subdname})"
544     directive="${directive//\%(${subdname})/${subdirective}}"
545     done
546     echo "${directive}"
547     return 0
548     }
549    
550 kevquinn 1.41 # Returns true if gcc sets relro
551     gcc-specs-relro() {
552     local directive
553     directive=$(gcc-specs-directive link_command)
554 gengor 1.84 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
555 kevquinn 1.41 }
556     # Returns true if gcc sets now
557     gcc-specs-now() {
558     local directive
559     directive=$(gcc-specs-directive link_command)
560 gengor 1.84 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
561 kevquinn 1.41 }
562     # Returns true if gcc builds PIEs
563     gcc-specs-pie() {
564     local directive
565     directive=$(gcc-specs-directive cc1)
566 gengor 1.84 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
567 kevquinn 1.41 }
568     # Returns true if gcc builds with the stack protector
569     gcc-specs-ssp() {
570     local directive
571     directive=$(gcc-specs-directive cc1)
572 gengor 1.84 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
573 kevquinn 1.41 }
574 kevquinn 1.46 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
575     gcc-specs-ssp-to-all() {
576     local directive
577     directive=$(gcc-specs-directive cc1)
578 gengor 1.84 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
579 kevquinn 1.46 }
580 gengor 1.80 # Returns true if gcc builds with fno-strict-overflow
581     gcc-specs-nostrict() {
582     local directive
583     directive=$(gcc-specs-directive cc1)
584 gengor 1.84 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
585 gengor 1.80 }
586 vapier 1.60
587    
588 vapier 1.74 # @FUNCTION: gen_usr_ldscript
589 vapier 1.85 # @USAGE: [-a] <list of libs to create linker scripts for>
590 vapier 1.74 # @DESCRIPTION:
591 vapier 1.60 # This function generate linker scripts in /usr/lib for dynamic
592     # libs in /lib. This is to fix linking problems when you have
593     # the .so in /lib, and the .a in /usr/lib. What happens is that
594     # in some cases when linking dynamic, the .a in /usr/lib is used
595     # instead of the .so in /lib due to gcc/libtool tweaking ld's
596 vapier 1.74 # library search path. This causes many builds to fail.
597 vapier 1.60 # See bug #4411 for more info.
598     #
599     # Note that you should in general use the unversioned name of
600 vapier 1.74 # the library (libfoo.so), as ldconfig should usually update it
601     # correctly to point to the latest version of the library present.
602 vapier 1.70 gen_usr_ldscript() {
603 vapier 1.85 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
604 grobian 1.91 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
605    
606     tc-is-static-only && return
607    
608 vapier 1.60 # Just make sure it exists
609     dodir /usr/${libdir}
610    
611 vapier 1.85 if [[ $1 == "-a" ]] ; then
612     auto=true
613     shift
614     dodir /${libdir}
615     fi
616    
617 vapier 1.60 # OUTPUT_FORMAT gives hints to the linker as to what binary format
618     # is referenced ... makes multilib saner
619     output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
620     [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
621    
622     for lib in "$@" ; do
623 grobian 1.91 local tlib
624     if ${auto} ; then
625     lib="lib${lib}${suffix}"
626 grobian 1.90 else
627 grobian 1.91 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
628     # This especially is for AIX where $(get_libname) can return ".a",
629     # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
630     [[ -r ${ED}/${libdir}/${lib} ]] || continue
631     #TODO: better die here?
632     fi
633    
634     case ${CTARGET:-${CHOST}} in
635     *-darwin*)
636 vapier 1.85 if ${auto} ; then
637 grobian 1.91 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
638     else
639     tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
640     fi
641     [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
642     tlib=${tlib##*/}
643    
644     if ${auto} ; then
645     mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
646 grobian 1.92 # some install_names are funky: they encode a version
647     if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
648     mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
649     fi
650 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
651     fi
652    
653     # Mach-O files have an id, which is like a soname, it tells how
654     # another object linking against this lib should reference it.
655     # Since we moved the lib from usr/lib into lib this reference is
656     # wrong. Hence, we update it here. We don't configure with
657     # libdir=/lib because that messes up libtool files.
658     # Make sure we don't lose the specific version, so just modify the
659     # existing install_name
660 grobian 1.94 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
661 grobian 1.95 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
662 grobian 1.94 local nowrite=yes
663     fi
664 grobian 1.91 install_name_tool \
665     -id "${EPREFIX}"/${libdir}/${tlib} \
666 grobian 1.94 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
667 grobian 1.95 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
668 grobian 1.91 # Now as we don't use GNU binutils and our linker doesn't
669     # understand linker scripts, just create a symlink.
670     pushd "${ED}/usr/${libdir}" > /dev/null
671     ln -snf "../../${libdir}/${tlib}" "${lib}"
672     popd > /dev/null
673     ;;
674 grobian 1.93 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
675 grobian 1.91 if ${auto} ; then
676     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
677     # no way to retrieve soname on these platforms (?)
678     tlib=$(readlink "${ED}"/${libdir}/${lib})
679     tlib=${tlib##*/}
680     if [[ -z ${tlib} ]] ; then
681     # ok, apparently was not a symlink, don't remove it and
682     # just link to it
683     tlib=${lib}
684     else
685     rm -f "${ED}"/${libdir}/${lib}
686     fi
687     else
688     tlib=${lib}
689     fi
690    
691     # we don't have GNU binutils on these platforms, so we symlink
692     # instead, which seems to work fine. Keep it relative, otherwise
693     # we break some QA checks in Portage
694     # on interix, the linker scripts would work fine in _most_
695     # situations. if a library links to such a linker script the
696     # absolute path to the correct library is inserted into the binary,
697     # which is wrong, since anybody linking _without_ libtool will miss
698     # some dependencies, since the stupid linker cannot find libraries
699     # hardcoded with absolute paths (as opposed to the loader, which
700     # seems to be able to do this).
701     # this has been seen while building shared-mime-info which needs
702     # libxml2, but links without libtool (and does not add libz to the
703     # command line by itself).
704     pushd "${ED}/usr/${libdir}" > /dev/null
705     ln -snf "../../${libdir}/${tlib}" "${lib}"
706     popd > /dev/null
707     ;;
708 grobian 1.93 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
709     if ${auto} ; then
710     tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
711     [[ -z ${tlib} ]] && tlib=${lib}
712     tlib=${tlib##*/} # 'internal name' can have a path component
713     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
714     # some SONAMEs are funky: they encode a version before the .so
715     if [[ ${tlib} != ${lib}* ]] ; then
716     mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
717     fi
718     [[ ${tlib} != ${lib} ]] &&
719     rm -f "${ED}"/${libdir}/${lib}
720     else
721     tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
722     [[ -z ${tlib} ]] && tlib=${lib}
723     tlib=${tlib##*/} # 'internal name' can have a path component
724     fi
725     pushd "${ED}"/usr/${libdir} >/dev/null
726     ln -snf "../../${libdir}/${tlib}" "${lib}"
727     # need the internal name in usr/lib too, to be available at runtime
728     # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
729     [[ ${tlib} != ${lib} ]] &&
730     ln -snf "../../${libdir}/${tlib}" "${tlib}"
731     popd >/dev/null
732     ;;
733 grobian 1.91 *)
734     if ${auto} ; then
735     tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
736     [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
737     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
738 vapier 1.88 # some SONAMEs are funky: they encode a version before the .so
739     if [[ ${tlib} != ${lib}* ]] ; then
740 grobian 1.91 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
741 vapier 1.88 fi
742 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
743 vapier 1.85 else
744     tlib=${lib}
745     fi
746 grobian 1.91 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
747 grobian 1.61 /* GNU ld script
748 vapier 1.87 Since Gentoo has critical dynamic libraries in /lib, and the static versions
749     in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
750     run into linking problems. This "fake" dynamic lib is a linker script that
751     redirects the linker to the real lib. And yes, this works in the cross-
752     compiling scenario as the sysroot-ed linker will prepend the real path.
753 grobian 1.61
754     See bug http://bugs.gentoo.org/4411 for more info.
755     */
756     ${output_format}
757 grobian 1.91 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
758 grobian 1.61 END_LDSCRIPT
759 grobian 1.91 ;;
760     esac
761     fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
762 vapier 1.60 done
763     }
764 vapier 1.109
765     fi

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