/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.134 - (hide annotations) (download)
Mon Mar 16 19:26:39 2015 UTC (2 years, 7 months ago) by vapier
Branch: MAIN
Changes since 1.133: +6 -2 lines
tc-getOBJDUMP: new helper a few ebuilds want

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 1.100 # @FUNCTION: tc-has-openmp
309     # @USAGE: [toolchain prefix]
310     # @DESCRIPTION:
311     # See if the toolchain supports OpenMP.
312     tc-has-openmp() {
313     local base="${T}/test-tc-openmp"
314     cat <<-EOF > "${base}.c"
315     #include <omp.h>
316     int main() {
317     int nthreads, tid, ret = 0;
318     #pragma omp parallel private(nthreads, tid)
319     {
320     tid = omp_get_thread_num();
321     nthreads = omp_get_num_threads(); ret += tid + nthreads;
322     }
323     return ret;
324     }
325     EOF
326     $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
327     local ret=$?
328     rm -f "${base}"*
329     return ${ret}
330     }
331    
332 vapier 1.97 # @FUNCTION: tc-has-tls
333     # @USAGE: [-s|-c|-l] [toolchain prefix]
334     # @DESCRIPTION:
335     # See if the toolchain supports thread local storage (TLS). Use -s to test the
336     # compiler, -c to also test the assembler, and -l to also test the C library
337     # (the default).
338     tc-has-tls() {
339     local base="${T}/test-tc-tls"
340     cat <<-EOF > "${base}.c"
341     int foo(int *i) {
342     static __thread int j = 0;
343     return *i ? j : *i;
344     }
345     EOF
346     local flags
347     case $1 in
348     -s) flags="-S";;
349     -c) flags="-c";;
350     -l) ;;
351     -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
352     esac
353     : ${flags:=-fPIC -shared -Wl,-z,defs}
354     [[ $1 == -* ]] && shift
355     $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
356     local ret=$?
357     rm -f "${base}"*
358     return ${ret}
359     }
360    
361 grobian 1.91
362 swegener 1.40 # Parse information from CBUILD/CHOST/CTARGET rather than
363 vapier 1.20 # use external variables from the profile.
364     tc-ninja_magic_to_arch() {
365 vapier 1.21 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
366 vapier 1.19
367     local type=$1
368     local host=$2
369 eradicator 1.25 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
370 vapier 1.19
371 axs 1.118 local KV=${KV:-${KV_FULL}}
372 axs 1.119 [[ ${type} == "kern" ]] && [[ -z ${KV} ]] && \
373     ewarn "QA: Kernel version could not be determined, please inherit kernel-2 or linux-info"
374 axs 1.118
375 vapier 1.19 case ${host} in
376 vapier 1.125 aarch64*) echo arm64;;
377 vapier 1.19 alpha*) echo alpha;;
378     arm*) echo arm;;
379 vapier 1.72 avr*) ninj avr32 avr;;
380 vapier 1.53 bfin*) ninj blackfin bfin;;
381 vapier 1.132 c6x*) echo c6x;;
382 vapier 1.47 cris*) echo cris;;
383 vapier 1.132 frv*) echo frv;;
384     hexagon*) echo hexagon;;
385 vapier 1.19 hppa*) ninj parisc hppa;;
386 vapier 1.75 i?86*)
387     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
388     # trees have been unified into 'x86'.
389 aballier 1.77 # FreeBSD still uses i386
390     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
391 vapier 1.75 echo i386
392     else
393     echo x86
394     fi
395     ;;
396 vapier 1.19 ia64*) echo ia64;;
397 vapier 1.23 m68*) echo m68k;;
398 vapier 1.132 metag*) echo metag;;
399     microblaze*) echo microblaze;;
400 vapier 1.19 mips*) echo mips;;
401 vapier 1.52 nios2*) echo nios2;;
402     nios*) echo nios;;
403 vapier 1.132 or32*) echo openrisc;;
404 vapier 1.49 powerpc*)
405 vapier 1.103 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
406     # have been unified into simply 'powerpc', but until 2.6.16,
407     # ppc32 is still using ARCH="ppc" as default
408     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
409     echo powerpc
410     elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
411     if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
412     echo powerpc
413     else
414     echo ppc
415     fi
416     elif [[ ${host} == powerpc64* ]] ; then
417     echo ppc64
418     elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
419     ninj ppc64 ppc
420     else
421     echo ppc
422     fi
423     ;;
424 vapier 1.131 riscv*) echo riscv;;
425 vapier 1.47 s390*) echo s390;;
426 vapier 1.132 score*) echo score;;
427 vapier 1.47 sh64*) ninj sh64 sh;;
428     sh*) echo sh;;
429 vapier 1.19 sparc64*) ninj sparc64 sparc;;
430 vapier 1.28 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
431     && ninj sparc64 sparc \
432     || echo sparc
433     ;;
434 vapier 1.121 tile*) echo tile;;
435 vapier 1.47 vax*) echo vax;;
436 aballier 1.104 x86_64*freebsd*) echo amd64;;
437 vapier 1.75 x86_64*)
438     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
439     # trees have been unified into 'x86'.
440     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
441     echo x86
442     else
443     ninj x86_64 amd64
444     fi
445     ;;
446 vapier 1.121 xtensa*) echo xtensa;;
447 vapier 1.73
448     # since our usage of tc-arch is largely concerned with
449     # normalizing inputs for testing ${CTARGET}, let's filter
450     # other cross targets (mingw and such) into the unknown.
451     *) echo unknown;;
452 vapier 1.19 esac
453     }
454 vapier 1.74 # @FUNCTION: tc-arch-kernel
455     # @USAGE: [toolchain prefix]
456     # @RETURN: name of the kernel arch according to the compiler target
457 vapier 1.20 tc-arch-kernel() {
458 vapier 1.74 tc-ninja_magic_to_arch kern "$@"
459 vapier 1.19 }
460 vapier 1.74 # @FUNCTION: tc-arch
461     # @USAGE: [toolchain prefix]
462     # @RETURN: name of the portage arch according to the compiler target
463 vapier 1.20 tc-arch() {
464 vapier 1.74 tc-ninja_magic_to_arch portage "$@"
465 vapier 1.19 }
466 vapier 1.74
467 robbat2 1.71 tc-endian() {
468     local host=$1
469     [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
470     host=${host%%-*}
471    
472     case ${host} in
473 vapier 1.116 aarch64*be) echo big;;
474     aarch64) echo little;;
475 robbat2 1.71 alpha*) echo big;;
476     arm*b*) echo big;;
477     arm*) echo little;;
478     cris*) echo little;;
479     hppa*) echo big;;
480     i?86*) echo little;;
481     ia64*) echo little;;
482     m68*) echo big;;
483     mips*l*) echo little;;
484     mips*) echo big;;
485 vapier 1.126 powerpc*le) echo little;;
486 robbat2 1.71 powerpc*) echo big;;
487     s390*) echo big;;
488     sh*b*) echo big;;
489     sh*) echo little;;
490     sparc*) echo big;;
491     x86_64*) echo little;;
492     *) echo wtf;;
493     esac
494     }
495 vapier 1.19
496 vapier 1.102 # Internal func. The first argument is the version info to expand.
497     # Query the preprocessor to improve compatibility across different
498     # compilers rather than maintaining a --version flag matrix. #335943
499     _gcc_fullversion() {
500     local ver="$1"; shift
501     set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
502     eval echo "$ver"
503     }
504    
505 vapier 1.74 # @FUNCTION: gcc-fullversion
506     # @RETURN: compiler version (major.minor.micro: [3.4.6])
507 vapier 1.1 gcc-fullversion() {
508 vapier 1.102 _gcc_fullversion '$1.$2.$3' "$@"
509 vapier 1.1 }
510 vapier 1.74 # @FUNCTION: gcc-version
511     # @RETURN: compiler version (major.minor: [3.4].6)
512 vapier 1.1 gcc-version() {
513 vapier 1.102 _gcc_fullversion '$1.$2' "$@"
514 vapier 1.1 }
515 vapier 1.74 # @FUNCTION: gcc-major-version
516     # @RETURN: major compiler version (major: [3].4.6)
517 vapier 1.1 gcc-major-version() {
518 vapier 1.102 _gcc_fullversion '$1' "$@"
519 vapier 1.1 }
520 vapier 1.74 # @FUNCTION: gcc-minor-version
521     # @RETURN: minor compiler version (minor: 3.[4].6)
522 vapier 1.1 gcc-minor-version() {
523 vapier 1.102 _gcc_fullversion '$2' "$@"
524 vapier 1.1 }
525 vapier 1.74 # @FUNCTION: gcc-micro-version
526     # @RETURN: micro compiler version (micro: 3.4.[6])
527 vapier 1.1 gcc-micro-version() {
528 vapier 1.102 _gcc_fullversion '$3' "$@"
529 vapier 1.1 }
530 vapier 1.74
531 kevquinn 1.68 # Returns the installation directory - internal toolchain
532     # function for use by _gcc-specs-exists (for flag-o-matic).
533     _gcc-install-dir() {
534 vapier 1.76 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
535 kevquinn 1.68 awk '$1=="install:" {print $2}')"
536     }
537     # Returns true if the indicated specs file exists - internal toolchain
538     # function for use by flag-o-matic.
539     _gcc-specs-exists() {
540     [[ -f $(_gcc-install-dir)/$1 ]]
541     }
542 kevquinn 1.41
543 kevquinn 1.68 # Returns requested gcc specs directive unprocessed - for used by
544     # gcc-specs-directive()
545 kevquinn 1.46 # Note; later specs normally overwrite earlier ones; however if a later
546     # spec starts with '+' then it appends.
547     # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
548 kevquinn 1.68 # as "Reading <file>", in order. Strictly speaking, if there's a
549     # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
550     # the same token anything from 'gcc -dumpspecs' is overridden by
551     # the contents of $(gcc_install_dir)/specs so the result is the
552     # same either way.
553     _gcc-specs-directive_raw() {
554 kevquinn 1.57 local cc=$(tc-getCC)
555     local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
556     ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
557 kevquinn 1.46 'BEGIN { pspec=""; spec=""; outside=1 }
558     $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
559 kevquinn 1.41 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
560 kevquinn 1.46 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
561     { spec=spec $0 }
562     END { print spec }'
563     return 0
564 kevquinn 1.41 }
565    
566 kevquinn 1.68 # Return the requested gcc specs directive, with all included
567     # specs expanded.
568     # Note, it does not check for inclusion loops, which cause it
569     # to never finish - but such loops are invalid for gcc and we're
570     # assuming gcc is operational.
571     gcc-specs-directive() {
572     local directive subdname subdirective
573     directive="$(_gcc-specs-directive_raw $1)"
574     while [[ ${directive} == *%\(*\)* ]]; do
575     subdname=${directive/*%\(}
576     subdname=${subdname/\)*}
577     subdirective="$(_gcc-specs-directive_raw ${subdname})"
578     directive="${directive//\%(${subdname})/${subdirective}}"
579     done
580     echo "${directive}"
581     return 0
582     }
583    
584 kevquinn 1.41 # Returns true if gcc sets relro
585     gcc-specs-relro() {
586     local directive
587     directive=$(gcc-specs-directive link_command)
588 blueness 1.128 [[ "${directive/\{!norelro:}" != "${directive}" ]]
589 kevquinn 1.41 }
590     # Returns true if gcc sets now
591     gcc-specs-now() {
592     local directive
593     directive=$(gcc-specs-directive link_command)
594 blueness 1.128 [[ "${directive/\{!nonow:}" != "${directive}" ]]
595 kevquinn 1.41 }
596     # Returns true if gcc builds PIEs
597     gcc-specs-pie() {
598     local directive
599     directive=$(gcc-specs-directive cc1)
600 blueness 1.128 [[ "${directive/\{!nopie:}" != "${directive}" ]]
601 kevquinn 1.41 }
602     # Returns true if gcc builds with the stack protector
603     gcc-specs-ssp() {
604     local directive
605     directive=$(gcc-specs-directive cc1)
606 blueness 1.128 [[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]]
607 kevquinn 1.41 }
608 kevquinn 1.46 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
609     gcc-specs-ssp-to-all() {
610     local directive
611     directive=$(gcc-specs-directive cc1)
612 blueness 1.128 [[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]]
613 kevquinn 1.46 }
614 gengor 1.80 # Returns true if gcc builds with fno-strict-overflow
615     gcc-specs-nostrict() {
616     local directive
617     directive=$(gcc-specs-directive cc1)
618 blueness 1.128 [[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]
619 gengor 1.80 }
620 blueness 1.129 # Returns true if gcc builds with fstack-check
621     gcc-specs-stack-check() {
622     local directive
623     directive=$(gcc-specs-directive cc1)
624     [[ "${directive/\{!fno-stack-check:}" != "${directive}" ]]
625     }
626 vapier 1.60
627    
628 vapier 1.74 # @FUNCTION: gen_usr_ldscript
629 vapier 1.85 # @USAGE: [-a] <list of libs to create linker scripts for>
630 vapier 1.74 # @DESCRIPTION:
631 vapier 1.60 # This function generate linker scripts in /usr/lib for dynamic
632     # libs in /lib. This is to fix linking problems when you have
633     # the .so in /lib, and the .a in /usr/lib. What happens is that
634     # in some cases when linking dynamic, the .a in /usr/lib is used
635     # instead of the .so in /lib due to gcc/libtool tweaking ld's
636 vapier 1.74 # library search path. This causes many builds to fail.
637 vapier 1.60 # See bug #4411 for more info.
638     #
639     # Note that you should in general use the unversioned name of
640 vapier 1.74 # the library (libfoo.so), as ldconfig should usually update it
641     # correctly to point to the latest version of the library present.
642 vapier 1.70 gen_usr_ldscript() {
643 vapier 1.85 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
644 grobian 1.91 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
645    
646     tc-is-static-only && return
647    
648 vapier 1.113 # Eventually we'd like to get rid of this func completely #417451
649     case ${CTARGET:-${CHOST}} in
650     *-darwin*) ;;
651 vapier 1.115 *linux*|*-freebsd*|*-openbsd*|*-netbsd*)
652 vapier 1.114 use prefix && return 0 ;;
653 vapier 1.113 *) return 0 ;;
654     esac
655    
656 vapier 1.60 # Just make sure it exists
657     dodir /usr/${libdir}
658    
659 vapier 1.85 if [[ $1 == "-a" ]] ; then
660     auto=true
661     shift
662     dodir /${libdir}
663     fi
664    
665 vapier 1.60 # OUTPUT_FORMAT gives hints to the linker as to what binary format
666     # is referenced ... makes multilib saner
667 vapier 1.123 local flags=( ${CFLAGS} ${LDFLAGS} -Wl,--verbose )
668     if $(tc-getLD) --version | grep -q 'GNU gold' ; then
669     # If they're using gold, manually invoke the old bfd. #487696
670     local d="${T}/bfd-linker"
671     mkdir -p "${d}"
672     ln -sf $(which ${CHOST}-ld.bfd) "${d}"/ld
673     flags+=( -B"${d}" )
674     fi
675     output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
676 vapier 1.60 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
677    
678     for lib in "$@" ; do
679 grobian 1.91 local tlib
680     if ${auto} ; then
681     lib="lib${lib}${suffix}"
682 grobian 1.90 else
683 grobian 1.91 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
684     # This especially is for AIX where $(get_libname) can return ".a",
685     # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
686     [[ -r ${ED}/${libdir}/${lib} ]] || continue
687     #TODO: better die here?
688     fi
689    
690     case ${CTARGET:-${CHOST}} in
691     *-darwin*)
692 vapier 1.85 if ${auto} ; then
693 grobian 1.91 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
694     else
695     tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
696     fi
697     [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
698     tlib=${tlib##*/}
699    
700     if ${auto} ; then
701     mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
702 grobian 1.92 # some install_names are funky: they encode a version
703     if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
704     mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
705     fi
706 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
707     fi
708    
709     # Mach-O files have an id, which is like a soname, it tells how
710     # another object linking against this lib should reference it.
711     # Since we moved the lib from usr/lib into lib this reference is
712     # wrong. Hence, we update it here. We don't configure with
713     # libdir=/lib because that messes up libtool files.
714     # Make sure we don't lose the specific version, so just modify the
715     # existing install_name
716 grobian 1.94 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
717 grobian 1.95 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
718 grobian 1.94 local nowrite=yes
719     fi
720 grobian 1.91 install_name_tool \
721     -id "${EPREFIX}"/${libdir}/${tlib} \
722 grobian 1.94 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
723 grobian 1.95 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
724 grobian 1.91 # Now as we don't use GNU binutils and our linker doesn't
725     # understand linker scripts, just create a symlink.
726     pushd "${ED}/usr/${libdir}" > /dev/null
727     ln -snf "../../${libdir}/${tlib}" "${lib}"
728     popd > /dev/null
729     ;;
730 vapier 1.114 *)
731 grobian 1.91 if ${auto} ; then
732     tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
733     [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
734     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
735 vapier 1.88 # some SONAMEs are funky: they encode a version before the .so
736     if [[ ${tlib} != ${lib}* ]] ; then
737 grobian 1.91 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
738 vapier 1.88 fi
739 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
740 vapier 1.85 else
741     tlib=${lib}
742     fi
743 grobian 1.91 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
744 grobian 1.61 /* GNU ld script
745 vapier 1.87 Since Gentoo has critical dynamic libraries in /lib, and the static versions
746     in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
747     run into linking problems. This "fake" dynamic lib is a linker script that
748     redirects the linker to the real lib. And yes, this works in the cross-
749     compiling scenario as the sysroot-ed linker will prepend the real path.
750 grobian 1.61
751     See bug http://bugs.gentoo.org/4411 for more info.
752     */
753     ${output_format}
754 grobian 1.91 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
755 grobian 1.61 END_LDSCRIPT
756 grobian 1.91 ;;
757     esac
758     fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
759 vapier 1.60 done
760     }
761 vapier 1.109
762     fi

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