/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.111 - (hide annotations) (download)
Sat Jun 9 06:56:14 2012 UTC (2 years, 3 months ago) by vapier
Branch: MAIN
Changes since 1.110: +12 -20 lines
add *-softfp-* support to the vendor field for people who want this for binary compat with closed sourced drivers #416727 by Raúl Porcel; merge the tc-is-hardfloat helper into the one place where it is called in the whole tree to avoid further confusion between when the return values of tc-is-softfloat and tc-is-hardfloat

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 1.111 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.110 2012/05/10 03:31:22 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}} != ${CHOST} ]])
175 vapier 1.12 }
176    
177 vapier 1.74 # @FUNCTION: tc-is-softfloat
178     # @DESCRIPTION:
179 vapier 1.65 # See if this toolchain is a softfloat based one.
180 vapier 1.74 # @CODE
181 vapier 1.65 # The possible return values:
182 vapier 1.111 # - only: the target is always softfloat (never had fpu)
183     # - yes: the target should support softfloat
184     # - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
185     # - no: the target doesn't support softfloat
186 vapier 1.74 # @CODE
187 vapier 1.65 # This allows us to react differently where packages accept
188     # softfloat flags in the case where support is optional, but
189     # rejects softfloat flags where the target always lacks an fpu.
190     tc-is-softfloat() {
191 vapier 1.110 local CTARGET=${CTARGET:-${CHOST}}
192 vapier 1.65 case ${CTARGET} in
193 vapier 1.66 bfin*|h8300*)
194 vapier 1.65 echo "only" ;;
195     *)
196 vapier 1.111 if [[ ${CTARGET//_/-} == *-softfloat-* ]] ; then
197     echo "yes"
198     elif [[ ${CTARGET//_/-} == *-softfp-* ]] ; then
199     echo "softfp"
200     else
201     echo "no"
202     fi
203 vapier 1.65 ;;
204     esac
205     }
206 vapier 1.1
207 grobian 1.91 # @FUNCTION: tc-is-static-only
208     # @DESCRIPTION:
209     # Return shell true if the target does not support shared libs, shell false
210     # otherwise.
211     tc-is-static-only() {
212     local host=${CTARGET:-${CHOST}}
213    
214     # *MiNT doesn't have shared libraries, only platform so far
215     return $([[ ${host} == *-mint* ]])
216     }
217    
218 vapier 1.108 # @FUNCTION: tc-env_build
219     # @USAGE: <command> [command args]
220     # @INTERNAL
221     # @DESCRIPTION:
222     # Setup the compile environment to the build tools and then execute the
223     # specified command. We use tc-getBUILD_XX here so that we work with
224     # all of the semi-[non-]standard env vars like $BUILD_CC which often
225     # the target build system does not check.
226     tc-env_build() {
227     CFLAGS=${BUILD_CFLAGS:--O1 -pipe} \
228     CXXFLAGS=${BUILD_CXXFLAGS:--O1 -pipe} \
229     CPPFLAGS=${BUILD_CPPFLAGS} \
230     LDFLAGS=${BUILD_LDFLAGS} \
231     AR=$(tc-getBUILD_AR) \
232     AS=$(tc-getBUILD_AS) \
233     CC=$(tc-getBUILD_CC) \
234     CPP=$(tc-getBUILD_CPP) \
235     CXX=$(tc-getBUILD_CXX) \
236     LD=$(tc-getBUILD_LD) \
237     NM=$(tc-getBUILD_NM) \
238     PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
239     RANLIB=$(tc-getBUILD_RANLIB) \
240     "$@"
241     }
242    
243     # @FUNCTION: econf_build
244     # @USAGE: [econf flags]
245     # @DESCRIPTION:
246     # Sometimes we need to locally build up some tools to run on CBUILD because
247     # the package has helper utils which are compiled+executed when compiling.
248     # This won't work when cross-compiling as the CHOST is set to a target which
249     # we cannot natively execute.
250     #
251     # For example, the python package will build up a local python binary using
252     # a portable build system (configure+make), but then use that binary to run
253     # local python scripts to build up other components of the overall python.
254     # We cannot rely on the python binary in $PATH as that often times will be
255     # a different version, or not even installed in the first place. Instead,
256     # we compile the code in a different directory to run on CBUILD, and then
257     # use that binary when compiling the main package to run on CHOST.
258     #
259     # For example, with newer EAPIs, you'd do something like:
260     # @CODE
261     # src_configure() {
262     # ECONF_SOURCE=${S}
263     # if tc-is-cross-compiler ; then
264     # mkdir "${WORKDIR}"/${CBUILD}
265     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
266     # econf_build --disable-some-unused-stuff
267     # popd >/dev/null
268     # fi
269     # ... normal build paths ...
270     # }
271     # src_compile() {
272     # if tc-is-cross-compiler ; then
273     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
274     # emake one-or-two-build-tools
275     # ln/mv build-tools to normal build paths in ${S}/
276     # popd >/dev/null
277     # fi
278     # ... normal build paths ...
279     # }
280     # @CODE
281     econf_build() {
282     tc-env_build econf --build=${CBUILD:-${CHOST}} "$@"
283     }
284    
285 vapier 1.100 # @FUNCTION: tc-has-openmp
286     # @USAGE: [toolchain prefix]
287     # @DESCRIPTION:
288     # See if the toolchain supports OpenMP.
289     tc-has-openmp() {
290     local base="${T}/test-tc-openmp"
291     cat <<-EOF > "${base}.c"
292     #include <omp.h>
293     int main() {
294     int nthreads, tid, ret = 0;
295     #pragma omp parallel private(nthreads, tid)
296     {
297     tid = omp_get_thread_num();
298     nthreads = omp_get_num_threads(); ret += tid + nthreads;
299     }
300     return ret;
301     }
302     EOF
303     $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
304     local ret=$?
305     rm -f "${base}"*
306     return ${ret}
307     }
308    
309 vapier 1.97 # @FUNCTION: tc-has-tls
310     # @USAGE: [-s|-c|-l] [toolchain prefix]
311     # @DESCRIPTION:
312     # See if the toolchain supports thread local storage (TLS). Use -s to test the
313     # compiler, -c to also test the assembler, and -l to also test the C library
314     # (the default).
315     tc-has-tls() {
316     local base="${T}/test-tc-tls"
317     cat <<-EOF > "${base}.c"
318     int foo(int *i) {
319     static __thread int j = 0;
320     return *i ? j : *i;
321     }
322     EOF
323     local flags
324     case $1 in
325     -s) flags="-S";;
326     -c) flags="-c";;
327     -l) ;;
328     -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
329     esac
330     : ${flags:=-fPIC -shared -Wl,-z,defs}
331     [[ $1 == -* ]] && shift
332     $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
333     local ret=$?
334     rm -f "${base}"*
335     return ${ret}
336     }
337    
338 grobian 1.91
339 swegener 1.40 # Parse information from CBUILD/CHOST/CTARGET rather than
340 vapier 1.20 # use external variables from the profile.
341     tc-ninja_magic_to_arch() {
342 vapier 1.21 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
343 vapier 1.19
344     local type=$1
345     local host=$2
346 eradicator 1.25 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
347 vapier 1.19
348     case ${host} in
349     alpha*) echo alpha;;
350     arm*) echo arm;;
351 vapier 1.72 avr*) ninj avr32 avr;;
352 vapier 1.53 bfin*) ninj blackfin bfin;;
353 vapier 1.47 cris*) echo cris;;
354 vapier 1.19 hppa*) ninj parisc hppa;;
355 vapier 1.75 i?86*)
356     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
357     # trees have been unified into 'x86'.
358 aballier 1.77 # FreeBSD still uses i386
359     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
360 vapier 1.75 echo i386
361     else
362     echo x86
363     fi
364     ;;
365 vapier 1.19 ia64*) echo ia64;;
366 vapier 1.23 m68*) echo m68k;;
367 vapier 1.19 mips*) echo mips;;
368 vapier 1.52 nios2*) echo nios2;;
369     nios*) echo nios;;
370 vapier 1.49 powerpc*)
371 vapier 1.103 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
372     # have been unified into simply 'powerpc', but until 2.6.16,
373     # ppc32 is still using ARCH="ppc" as default
374     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
375     echo powerpc
376     elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
377     if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
378     echo powerpc
379     else
380     echo ppc
381     fi
382     elif [[ ${host} == powerpc64* ]] ; then
383     echo ppc64
384     elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
385     ninj ppc64 ppc
386     else
387     echo ppc
388     fi
389     ;;
390 vapier 1.47 s390*) echo s390;;
391     sh64*) ninj sh64 sh;;
392     sh*) echo sh;;
393 vapier 1.19 sparc64*) ninj sparc64 sparc;;
394 vapier 1.28 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
395     && ninj sparc64 sparc \
396     || echo sparc
397     ;;
398 vapier 1.47 vax*) echo vax;;
399 aballier 1.104 x86_64*freebsd*) echo amd64;;
400 vapier 1.75 x86_64*)
401     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
402     # trees have been unified into 'x86'.
403     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
404     echo x86
405     else
406     ninj x86_64 amd64
407     fi
408     ;;
409 vapier 1.73
410     # since our usage of tc-arch is largely concerned with
411     # normalizing inputs for testing ${CTARGET}, let's filter
412     # other cross targets (mingw and such) into the unknown.
413     *) echo unknown;;
414 vapier 1.19 esac
415     }
416 vapier 1.74 # @FUNCTION: tc-arch-kernel
417     # @USAGE: [toolchain prefix]
418     # @RETURN: name of the kernel arch according to the compiler target
419 vapier 1.20 tc-arch-kernel() {
420 vapier 1.74 tc-ninja_magic_to_arch kern "$@"
421 vapier 1.19 }
422 vapier 1.74 # @FUNCTION: tc-arch
423     # @USAGE: [toolchain prefix]
424     # @RETURN: name of the portage arch according to the compiler target
425 vapier 1.20 tc-arch() {
426 vapier 1.74 tc-ninja_magic_to_arch portage "$@"
427 vapier 1.19 }
428 vapier 1.74
429 robbat2 1.71 tc-endian() {
430     local host=$1
431     [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
432     host=${host%%-*}
433    
434     case ${host} in
435     alpha*) echo big;;
436     arm*b*) echo big;;
437     arm*) echo little;;
438     cris*) echo little;;
439     hppa*) echo big;;
440     i?86*) echo little;;
441     ia64*) echo little;;
442     m68*) echo big;;
443     mips*l*) echo little;;
444     mips*) echo big;;
445     powerpc*) echo big;;
446     s390*) echo big;;
447     sh*b*) echo big;;
448     sh*) echo little;;
449     sparc*) echo big;;
450     x86_64*) echo little;;
451     *) echo wtf;;
452     esac
453     }
454 vapier 1.19
455 vapier 1.102 # Internal func. The first argument is the version info to expand.
456     # Query the preprocessor to improve compatibility across different
457     # compilers rather than maintaining a --version flag matrix. #335943
458     _gcc_fullversion() {
459     local ver="$1"; shift
460     set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
461     eval echo "$ver"
462     }
463    
464 vapier 1.74 # @FUNCTION: gcc-fullversion
465     # @RETURN: compiler version (major.minor.micro: [3.4.6])
466 vapier 1.1 gcc-fullversion() {
467 vapier 1.102 _gcc_fullversion '$1.$2.$3' "$@"
468 vapier 1.1 }
469 vapier 1.74 # @FUNCTION: gcc-version
470     # @RETURN: compiler version (major.minor: [3.4].6)
471 vapier 1.1 gcc-version() {
472 vapier 1.102 _gcc_fullversion '$1.$2' "$@"
473 vapier 1.1 }
474 vapier 1.74 # @FUNCTION: gcc-major-version
475     # @RETURN: major compiler version (major: [3].4.6)
476 vapier 1.1 gcc-major-version() {
477 vapier 1.102 _gcc_fullversion '$1' "$@"
478 vapier 1.1 }
479 vapier 1.74 # @FUNCTION: gcc-minor-version
480     # @RETURN: minor compiler version (minor: 3.[4].6)
481 vapier 1.1 gcc-minor-version() {
482 vapier 1.102 _gcc_fullversion '$2' "$@"
483 vapier 1.1 }
484 vapier 1.74 # @FUNCTION: gcc-micro-version
485     # @RETURN: micro compiler version (micro: 3.4.[6])
486 vapier 1.1 gcc-micro-version() {
487 vapier 1.102 _gcc_fullversion '$3' "$@"
488 vapier 1.1 }
489 vapier 1.74
490 kevquinn 1.68 # Returns the installation directory - internal toolchain
491     # function for use by _gcc-specs-exists (for flag-o-matic).
492     _gcc-install-dir() {
493 vapier 1.76 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
494 kevquinn 1.68 awk '$1=="install:" {print $2}')"
495     }
496     # Returns true if the indicated specs file exists - internal toolchain
497     # function for use by flag-o-matic.
498     _gcc-specs-exists() {
499     [[ -f $(_gcc-install-dir)/$1 ]]
500     }
501 kevquinn 1.41
502 kevquinn 1.68 # Returns requested gcc specs directive unprocessed - for used by
503     # gcc-specs-directive()
504 kevquinn 1.46 # Note; later specs normally overwrite earlier ones; however if a later
505     # spec starts with '+' then it appends.
506     # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
507 kevquinn 1.68 # as "Reading <file>", in order. Strictly speaking, if there's a
508     # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
509     # the same token anything from 'gcc -dumpspecs' is overridden by
510     # the contents of $(gcc_install_dir)/specs so the result is the
511     # same either way.
512     _gcc-specs-directive_raw() {
513 kevquinn 1.57 local cc=$(tc-getCC)
514     local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
515     ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
516 kevquinn 1.46 'BEGIN { pspec=""; spec=""; outside=1 }
517     $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
518 kevquinn 1.41 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
519 kevquinn 1.46 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
520     { spec=spec $0 }
521     END { print spec }'
522     return 0
523 kevquinn 1.41 }
524    
525 kevquinn 1.68 # Return the requested gcc specs directive, with all included
526     # specs expanded.
527     # Note, it does not check for inclusion loops, which cause it
528     # to never finish - but such loops are invalid for gcc and we're
529     # assuming gcc is operational.
530     gcc-specs-directive() {
531     local directive subdname subdirective
532     directive="$(_gcc-specs-directive_raw $1)"
533     while [[ ${directive} == *%\(*\)* ]]; do
534     subdname=${directive/*%\(}
535     subdname=${subdname/\)*}
536     subdirective="$(_gcc-specs-directive_raw ${subdname})"
537     directive="${directive//\%(${subdname})/${subdirective}}"
538     done
539     echo "${directive}"
540     return 0
541     }
542    
543 kevquinn 1.41 # Returns true if gcc sets relro
544     gcc-specs-relro() {
545     local directive
546     directive=$(gcc-specs-directive link_command)
547 gengor 1.84 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
548 kevquinn 1.41 }
549     # Returns true if gcc sets now
550     gcc-specs-now() {
551     local directive
552     directive=$(gcc-specs-directive link_command)
553 gengor 1.84 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
554 kevquinn 1.41 }
555     # Returns true if gcc builds PIEs
556     gcc-specs-pie() {
557     local directive
558     directive=$(gcc-specs-directive cc1)
559 gengor 1.84 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
560 kevquinn 1.41 }
561     # Returns true if gcc builds with the stack protector
562     gcc-specs-ssp() {
563     local directive
564     directive=$(gcc-specs-directive cc1)
565 gengor 1.84 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
566 kevquinn 1.41 }
567 kevquinn 1.46 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
568     gcc-specs-ssp-to-all() {
569     local directive
570     directive=$(gcc-specs-directive cc1)
571 gengor 1.84 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
572 kevquinn 1.46 }
573 gengor 1.80 # Returns true if gcc builds with fno-strict-overflow
574     gcc-specs-nostrict() {
575     local directive
576     directive=$(gcc-specs-directive cc1)
577 gengor 1.84 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
578 gengor 1.80 }
579 vapier 1.60
580    
581 vapier 1.74 # @FUNCTION: gen_usr_ldscript
582 vapier 1.85 # @USAGE: [-a] <list of libs to create linker scripts for>
583 vapier 1.74 # @DESCRIPTION:
584 vapier 1.60 # This function generate linker scripts in /usr/lib for dynamic
585     # libs in /lib. This is to fix linking problems when you have
586     # the .so in /lib, and the .a in /usr/lib. What happens is that
587     # in some cases when linking dynamic, the .a in /usr/lib is used
588     # instead of the .so in /lib due to gcc/libtool tweaking ld's
589 vapier 1.74 # library search path. This causes many builds to fail.
590 vapier 1.60 # See bug #4411 for more info.
591     #
592     # Note that you should in general use the unversioned name of
593 vapier 1.74 # the library (libfoo.so), as ldconfig should usually update it
594     # correctly to point to the latest version of the library present.
595 vapier 1.70 gen_usr_ldscript() {
596 vapier 1.85 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
597 grobian 1.91 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
598    
599     tc-is-static-only && return
600    
601 vapier 1.60 # Just make sure it exists
602     dodir /usr/${libdir}
603    
604 vapier 1.85 if [[ $1 == "-a" ]] ; then
605     auto=true
606     shift
607     dodir /${libdir}
608     fi
609    
610 vapier 1.60 # OUTPUT_FORMAT gives hints to the linker as to what binary format
611     # is referenced ... makes multilib saner
612     output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
613     [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
614    
615     for lib in "$@" ; do
616 grobian 1.91 local tlib
617     if ${auto} ; then
618     lib="lib${lib}${suffix}"
619 grobian 1.90 else
620 grobian 1.91 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
621     # This especially is for AIX where $(get_libname) can return ".a",
622     # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
623     [[ -r ${ED}/${libdir}/${lib} ]] || continue
624     #TODO: better die here?
625     fi
626    
627     case ${CTARGET:-${CHOST}} in
628     *-darwin*)
629 vapier 1.85 if ${auto} ; then
630 grobian 1.91 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
631     else
632     tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
633     fi
634     [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
635     tlib=${tlib##*/}
636    
637     if ${auto} ; then
638     mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
639 grobian 1.92 # some install_names are funky: they encode a version
640     if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
641     mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
642     fi
643 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
644     fi
645    
646     # Mach-O files have an id, which is like a soname, it tells how
647     # another object linking against this lib should reference it.
648     # Since we moved the lib from usr/lib into lib this reference is
649     # wrong. Hence, we update it here. We don't configure with
650     # libdir=/lib because that messes up libtool files.
651     # Make sure we don't lose the specific version, so just modify the
652     # existing install_name
653 grobian 1.94 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
654 grobian 1.95 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
655 grobian 1.94 local nowrite=yes
656     fi
657 grobian 1.91 install_name_tool \
658     -id "${EPREFIX}"/${libdir}/${tlib} \
659 grobian 1.94 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
660 grobian 1.95 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
661 grobian 1.91 # Now as we don't use GNU binutils and our linker doesn't
662     # understand linker scripts, just create a symlink.
663     pushd "${ED}/usr/${libdir}" > /dev/null
664     ln -snf "../../${libdir}/${tlib}" "${lib}"
665     popd > /dev/null
666     ;;
667 grobian 1.93 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
668 grobian 1.91 if ${auto} ; then
669     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
670     # no way to retrieve soname on these platforms (?)
671     tlib=$(readlink "${ED}"/${libdir}/${lib})
672     tlib=${tlib##*/}
673     if [[ -z ${tlib} ]] ; then
674     # ok, apparently was not a symlink, don't remove it and
675     # just link to it
676     tlib=${lib}
677     else
678     rm -f "${ED}"/${libdir}/${lib}
679     fi
680     else
681     tlib=${lib}
682     fi
683    
684     # we don't have GNU binutils on these platforms, so we symlink
685     # instead, which seems to work fine. Keep it relative, otherwise
686     # we break some QA checks in Portage
687     # on interix, the linker scripts would work fine in _most_
688     # situations. if a library links to such a linker script the
689     # absolute path to the correct library is inserted into the binary,
690     # which is wrong, since anybody linking _without_ libtool will miss
691     # some dependencies, since the stupid linker cannot find libraries
692     # hardcoded with absolute paths (as opposed to the loader, which
693     # seems to be able to do this).
694     # this has been seen while building shared-mime-info which needs
695     # libxml2, but links without libtool (and does not add libz to the
696     # command line by itself).
697     pushd "${ED}/usr/${libdir}" > /dev/null
698     ln -snf "../../${libdir}/${tlib}" "${lib}"
699     popd > /dev/null
700     ;;
701 grobian 1.93 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
702     if ${auto} ; then
703     tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
704     [[ -z ${tlib} ]] && tlib=${lib}
705     tlib=${tlib##*/} # 'internal name' can have a path component
706     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
707     # some SONAMEs are funky: they encode a version before the .so
708     if [[ ${tlib} != ${lib}* ]] ; then
709     mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
710     fi
711     [[ ${tlib} != ${lib} ]] &&
712     rm -f "${ED}"/${libdir}/${lib}
713     else
714     tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
715     [[ -z ${tlib} ]] && tlib=${lib}
716     tlib=${tlib##*/} # 'internal name' can have a path component
717     fi
718     pushd "${ED}"/usr/${libdir} >/dev/null
719     ln -snf "../../${libdir}/${tlib}" "${lib}"
720     # need the internal name in usr/lib too, to be available at runtime
721     # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
722     [[ ${tlib} != ${lib} ]] &&
723     ln -snf "../../${libdir}/${tlib}" "${tlib}"
724     popd >/dev/null
725     ;;
726 grobian 1.91 *)
727     if ${auto} ; then
728     tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
729     [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
730     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
731 vapier 1.88 # some SONAMEs are funky: they encode a version before the .so
732     if [[ ${tlib} != ${lib}* ]] ; then
733 grobian 1.91 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
734 vapier 1.88 fi
735 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
736 vapier 1.85 else
737     tlib=${lib}
738     fi
739 grobian 1.91 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
740 grobian 1.61 /* GNU ld script
741 vapier 1.87 Since Gentoo has critical dynamic libraries in /lib, and the static versions
742     in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
743     run into linking problems. This "fake" dynamic lib is a linker script that
744     redirects the linker to the real lib. And yes, this works in the cross-
745     compiling scenario as the sysroot-ed linker will prepend the real path.
746 grobian 1.61
747     See bug http://bugs.gentoo.org/4411 for more info.
748     */
749     ${output_format}
750 grobian 1.91 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
751 grobian 1.61 END_LDSCRIPT
752 grobian 1.91 ;;
753     esac
754     fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
755 vapier 1.60 done
756     }
757 vapier 1.109
758     fi

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