/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.136 - (hide annotations) (download)
Tue Mar 31 04:27:29 2015 UTC (43 hours, 48 minutes ago) by vapier
Branch: MAIN
CVS Tags: HEAD
Changes since 1.135: +6 -3 lines
tc-export_build_env: export BUILD_CPPFLAGS/BUILD_LDFLAGS to non-empty values so they do not get defaulted by build systems #526734 by Matthias Maier

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 1.136 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.135 2015/03/16 21:12:27 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 vapier 1.136 # Some build envs will initialize vars like:
227     # : ${BUILD_LDFLAGS:-${LDFLAGS}}
228     # So make sure all variables are non-empty. #526734
229 vapier 1.112 : ${BUILD_CFLAGS:=-O1 -pipe}
230     : ${BUILD_CXXFLAGS:=-O1 -pipe}
231 vapier 1.136 : ${BUILD_CPPFLAGS:= }
232     : ${BUILD_LDFLAGS:= }
233 vapier 1.112 export BUILD_{C,CXX,CPP,LD}FLAGS
234 vapier 1.122
235     # Some packages use XXX_FOR_BUILD.
236     local v
237     for v in BUILD_{C,CXX,CPP,LD}FLAGS ; do
238     export ${v#BUILD_}_FOR_BUILD="${!v}"
239     done
240 vapier 1.112 }
241    
242 vapier 1.108 # @FUNCTION: tc-env_build
243     # @USAGE: <command> [command args]
244     # @INTERNAL
245     # @DESCRIPTION:
246     # Setup the compile environment to the build tools and then execute the
247     # specified command. We use tc-getBUILD_XX here so that we work with
248     # all of the semi-[non-]standard env vars like $BUILD_CC which often
249     # the target build system does not check.
250     tc-env_build() {
251 vapier 1.112 tc-export_build_env
252     CFLAGS=${BUILD_CFLAGS} \
253     CXXFLAGS=${BUILD_CXXFLAGS} \
254 vapier 1.108 CPPFLAGS=${BUILD_CPPFLAGS} \
255     LDFLAGS=${BUILD_LDFLAGS} \
256     AR=$(tc-getBUILD_AR) \
257     AS=$(tc-getBUILD_AS) \
258     CC=$(tc-getBUILD_CC) \
259     CPP=$(tc-getBUILD_CPP) \
260     CXX=$(tc-getBUILD_CXX) \
261     LD=$(tc-getBUILD_LD) \
262     NM=$(tc-getBUILD_NM) \
263     PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
264     RANLIB=$(tc-getBUILD_RANLIB) \
265     "$@"
266     }
267    
268     # @FUNCTION: econf_build
269     # @USAGE: [econf flags]
270     # @DESCRIPTION:
271     # Sometimes we need to locally build up some tools to run on CBUILD because
272     # the package has helper utils which are compiled+executed when compiling.
273     # This won't work when cross-compiling as the CHOST is set to a target which
274     # we cannot natively execute.
275     #
276     # For example, the python package will build up a local python binary using
277     # a portable build system (configure+make), but then use that binary to run
278     # local python scripts to build up other components of the overall python.
279     # We cannot rely on the python binary in $PATH as that often times will be
280     # a different version, or not even installed in the first place. Instead,
281     # we compile the code in a different directory to run on CBUILD, and then
282     # use that binary when compiling the main package to run on CHOST.
283     #
284     # For example, with newer EAPIs, you'd do something like:
285     # @CODE
286     # src_configure() {
287     # ECONF_SOURCE=${S}
288     # if tc-is-cross-compiler ; then
289     # mkdir "${WORKDIR}"/${CBUILD}
290     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
291     # econf_build --disable-some-unused-stuff
292     # popd >/dev/null
293     # fi
294     # ... normal build paths ...
295     # }
296     # src_compile() {
297     # if tc-is-cross-compiler ; then
298     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
299     # emake one-or-two-build-tools
300     # ln/mv build-tools to normal build paths in ${S}/
301     # popd >/dev/null
302     # fi
303     # ... normal build paths ...
304     # }
305     # @CODE
306     econf_build() {
307 vapier 1.133 local CBUILD=${CBUILD:-${CHOST}}
308     tc-env_build econf --build=${CBUILD} --host=${CBUILD} "$@"
309 vapier 1.108 }
310    
311 vapier 1.135 # @FUNCTION: tc-ld-is-gold
312     # @USAGE: [toolchain prefix]
313     # @DESCRIPTION:
314     # Return true if the current linker is set to gold.
315     tc-ld-is-gold() {
316     local out
317    
318     # First check the linker directly.
319     out=$($(tc-getLD "$@") --version 2>&1)
320     if [[ ${out} == *"GNU gold"* ]] ; then
321     return 0
322     fi
323    
324     # Then see if they're selecting gold via compiler flags.
325     # Note: We're assuming they're using LDFLAGS to hold the
326     # options and not CFLAGS/CXXFLAGS.
327     local base="${T}/test-tc-gold"
328     cat <<-EOF > "${base}.c"
329     int main() { return 0; }
330     EOF
331     out=$($(tc-getCC "$@") ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} -Wl,--version "${base}.c" -o "${base}" 2>&1)
332     rm -f "${base}"*
333     if [[ ${out} == *"GNU gold"* ]] ; then
334     return 0
335     fi
336    
337     # No gold here!
338     return 1
339     }
340    
341     # @FUNCTION: tc-ld-disable-gold
342     # @USAGE: [toolchain prefix]
343     # @DESCRIPTION:
344     # If the gold linker is currently selected, configure the compilation
345     # settings so that we use the older bfd linker instead.
346     tc-ld-disable-gold() {
347     if ! tc-ld-is-gold "$@" ; then
348     # They aren't using gold, so nothing to do!
349     return
350     fi
351    
352     ewarn "Forcing usage of the BFD linker instead of GOLD"
353    
354     # Set up LD to point directly to bfd if it's available.
355     local bfd_ld="$(tc-getLD "$@").bfd"
356     local path_ld=$(which "${bfd_ld}" 2>/dev/null)
357     [[ -e ${path_ld} ]] && export LD=${bfd_ld}
358    
359     # Set up LDFLAGS to select gold based on the gcc version.
360     local major=$(gcc-major-version "$@")
361     local minor=$(gcc-minor-version "$@")
362     if [[ ${major} -lt 4 ]] || [[ ${major} -eq 4 && ${minor} -lt 8 ]] ; then
363     # <=gcc-4.7 requires some coercion. Only works if bfd exists.
364     if [[ -e ${path_ld} ]] ; then
365     local d="${T}/bfd-linker"
366     mkdir -p "${d}"
367     ln -sf "${path_ld}" "${d}"/ld
368     export LDFLAGS="${LDFLAGS} -B${d}"
369     else
370     die "unable to locate a BFD linker to bypass gold"
371     fi
372     else
373     # gcc-4.8+ supports -fuse-ld directly.
374     export LDFLAGS="${LDFLAGS} -fuse-ld=bfd"
375     fi
376     }
377    
378 vapier 1.100 # @FUNCTION: tc-has-openmp
379     # @USAGE: [toolchain prefix]
380     # @DESCRIPTION:
381     # See if the toolchain supports OpenMP.
382     tc-has-openmp() {
383     local base="${T}/test-tc-openmp"
384     cat <<-EOF > "${base}.c"
385     #include <omp.h>
386     int main() {
387     int nthreads, tid, ret = 0;
388     #pragma omp parallel private(nthreads, tid)
389     {
390     tid = omp_get_thread_num();
391     nthreads = omp_get_num_threads(); ret += tid + nthreads;
392     }
393     return ret;
394     }
395     EOF
396     $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
397     local ret=$?
398     rm -f "${base}"*
399     return ${ret}
400     }
401    
402 vapier 1.97 # @FUNCTION: tc-has-tls
403     # @USAGE: [-s|-c|-l] [toolchain prefix]
404     # @DESCRIPTION:
405     # See if the toolchain supports thread local storage (TLS). Use -s to test the
406     # compiler, -c to also test the assembler, and -l to also test the C library
407     # (the default).
408     tc-has-tls() {
409     local base="${T}/test-tc-tls"
410     cat <<-EOF > "${base}.c"
411     int foo(int *i) {
412     static __thread int j = 0;
413     return *i ? j : *i;
414     }
415     EOF
416     local flags
417     case $1 in
418     -s) flags="-S";;
419     -c) flags="-c";;
420     -l) ;;
421     -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
422     esac
423     : ${flags:=-fPIC -shared -Wl,-z,defs}
424     [[ $1 == -* ]] && shift
425     $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
426     local ret=$?
427     rm -f "${base}"*
428     return ${ret}
429     }
430    
431 grobian 1.91
432 swegener 1.40 # Parse information from CBUILD/CHOST/CTARGET rather than
433 vapier 1.20 # use external variables from the profile.
434     tc-ninja_magic_to_arch() {
435 vapier 1.21 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
436 vapier 1.19
437     local type=$1
438     local host=$2
439 eradicator 1.25 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
440 vapier 1.19
441 axs 1.118 local KV=${KV:-${KV_FULL}}
442 axs 1.119 [[ ${type} == "kern" ]] && [[ -z ${KV} ]] && \
443     ewarn "QA: Kernel version could not be determined, please inherit kernel-2 or linux-info"
444 axs 1.118
445 vapier 1.19 case ${host} in
446 vapier 1.125 aarch64*) echo arm64;;
447 vapier 1.19 alpha*) echo alpha;;
448     arm*) echo arm;;
449 vapier 1.72 avr*) ninj avr32 avr;;
450 vapier 1.53 bfin*) ninj blackfin bfin;;
451 vapier 1.132 c6x*) echo c6x;;
452 vapier 1.47 cris*) echo cris;;
453 vapier 1.132 frv*) echo frv;;
454     hexagon*) echo hexagon;;
455 vapier 1.19 hppa*) ninj parisc hppa;;
456 vapier 1.75 i?86*)
457     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
458     # trees have been unified into 'x86'.
459 aballier 1.77 # FreeBSD still uses i386
460     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
461 vapier 1.75 echo i386
462     else
463     echo x86
464     fi
465     ;;
466 vapier 1.19 ia64*) echo ia64;;
467 vapier 1.23 m68*) echo m68k;;
468 vapier 1.132 metag*) echo metag;;
469     microblaze*) echo microblaze;;
470 vapier 1.19 mips*) echo mips;;
471 vapier 1.52 nios2*) echo nios2;;
472     nios*) echo nios;;
473 vapier 1.132 or32*) echo openrisc;;
474 vapier 1.49 powerpc*)
475 vapier 1.103 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
476     # have been unified into simply 'powerpc', but until 2.6.16,
477     # ppc32 is still using ARCH="ppc" as default
478     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
479     echo powerpc
480     elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
481     if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
482     echo powerpc
483     else
484     echo ppc
485     fi
486     elif [[ ${host} == powerpc64* ]] ; then
487     echo ppc64
488     elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
489     ninj ppc64 ppc
490     else
491     echo ppc
492     fi
493     ;;
494 vapier 1.131 riscv*) echo riscv;;
495 vapier 1.47 s390*) echo s390;;
496 vapier 1.132 score*) echo score;;
497 vapier 1.47 sh64*) ninj sh64 sh;;
498     sh*) echo sh;;
499 vapier 1.19 sparc64*) ninj sparc64 sparc;;
500 vapier 1.28 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
501     && ninj sparc64 sparc \
502     || echo sparc
503     ;;
504 vapier 1.121 tile*) echo tile;;
505 vapier 1.47 vax*) echo vax;;
506 aballier 1.104 x86_64*freebsd*) echo amd64;;
507 vapier 1.75 x86_64*)
508     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
509     # trees have been unified into 'x86'.
510     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
511     echo x86
512     else
513     ninj x86_64 amd64
514     fi
515     ;;
516 vapier 1.121 xtensa*) echo xtensa;;
517 vapier 1.73
518     # since our usage of tc-arch is largely concerned with
519     # normalizing inputs for testing ${CTARGET}, let's filter
520     # other cross targets (mingw and such) into the unknown.
521     *) echo unknown;;
522 vapier 1.19 esac
523     }
524 vapier 1.74 # @FUNCTION: tc-arch-kernel
525     # @USAGE: [toolchain prefix]
526     # @RETURN: name of the kernel arch according to the compiler target
527 vapier 1.20 tc-arch-kernel() {
528 vapier 1.74 tc-ninja_magic_to_arch kern "$@"
529 vapier 1.19 }
530 vapier 1.74 # @FUNCTION: tc-arch
531     # @USAGE: [toolchain prefix]
532     # @RETURN: name of the portage arch according to the compiler target
533 vapier 1.20 tc-arch() {
534 vapier 1.74 tc-ninja_magic_to_arch portage "$@"
535 vapier 1.19 }
536 vapier 1.74
537 robbat2 1.71 tc-endian() {
538     local host=$1
539     [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
540     host=${host%%-*}
541    
542     case ${host} in
543 vapier 1.116 aarch64*be) echo big;;
544     aarch64) echo little;;
545 robbat2 1.71 alpha*) echo big;;
546     arm*b*) echo big;;
547     arm*) echo little;;
548     cris*) echo little;;
549     hppa*) echo big;;
550     i?86*) echo little;;
551     ia64*) echo little;;
552     m68*) echo big;;
553     mips*l*) echo little;;
554     mips*) echo big;;
555 vapier 1.126 powerpc*le) echo little;;
556 robbat2 1.71 powerpc*) echo big;;
557     s390*) echo big;;
558     sh*b*) echo big;;
559     sh*) echo little;;
560     sparc*) echo big;;
561     x86_64*) echo little;;
562     *) echo wtf;;
563     esac
564     }
565 vapier 1.19
566 vapier 1.102 # Internal func. The first argument is the version info to expand.
567     # Query the preprocessor to improve compatibility across different
568     # compilers rather than maintaining a --version flag matrix. #335943
569     _gcc_fullversion() {
570     local ver="$1"; shift
571     set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
572     eval echo "$ver"
573     }
574    
575 vapier 1.74 # @FUNCTION: gcc-fullversion
576     # @RETURN: compiler version (major.minor.micro: [3.4.6])
577 vapier 1.1 gcc-fullversion() {
578 vapier 1.102 _gcc_fullversion '$1.$2.$3' "$@"
579 vapier 1.1 }
580 vapier 1.74 # @FUNCTION: gcc-version
581     # @RETURN: compiler version (major.minor: [3.4].6)
582 vapier 1.1 gcc-version() {
583 vapier 1.102 _gcc_fullversion '$1.$2' "$@"
584 vapier 1.1 }
585 vapier 1.74 # @FUNCTION: gcc-major-version
586     # @RETURN: major compiler version (major: [3].4.6)
587 vapier 1.1 gcc-major-version() {
588 vapier 1.102 _gcc_fullversion '$1' "$@"
589 vapier 1.1 }
590 vapier 1.74 # @FUNCTION: gcc-minor-version
591     # @RETURN: minor compiler version (minor: 3.[4].6)
592 vapier 1.1 gcc-minor-version() {
593 vapier 1.102 _gcc_fullversion '$2' "$@"
594 vapier 1.1 }
595 vapier 1.74 # @FUNCTION: gcc-micro-version
596     # @RETURN: micro compiler version (micro: 3.4.[6])
597 vapier 1.1 gcc-micro-version() {
598 vapier 1.102 _gcc_fullversion '$3' "$@"
599 vapier 1.1 }
600 vapier 1.74
601 kevquinn 1.68 # Returns the installation directory - internal toolchain
602     # function for use by _gcc-specs-exists (for flag-o-matic).
603     _gcc-install-dir() {
604 vapier 1.76 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
605 kevquinn 1.68 awk '$1=="install:" {print $2}')"
606     }
607     # Returns true if the indicated specs file exists - internal toolchain
608     # function for use by flag-o-matic.
609     _gcc-specs-exists() {
610     [[ -f $(_gcc-install-dir)/$1 ]]
611     }
612 kevquinn 1.41
613 kevquinn 1.68 # Returns requested gcc specs directive unprocessed - for used by
614     # gcc-specs-directive()
615 kevquinn 1.46 # Note; later specs normally overwrite earlier ones; however if a later
616     # spec starts with '+' then it appends.
617     # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
618 kevquinn 1.68 # as "Reading <file>", in order. Strictly speaking, if there's a
619     # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
620     # the same token anything from 'gcc -dumpspecs' is overridden by
621     # the contents of $(gcc_install_dir)/specs so the result is the
622     # same either way.
623     _gcc-specs-directive_raw() {
624 kevquinn 1.57 local cc=$(tc-getCC)
625     local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
626     ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
627 kevquinn 1.46 'BEGIN { pspec=""; spec=""; outside=1 }
628     $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
629 kevquinn 1.41 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
630 kevquinn 1.46 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
631     { spec=spec $0 }
632     END { print spec }'
633     return 0
634 kevquinn 1.41 }
635    
636 kevquinn 1.68 # Return the requested gcc specs directive, with all included
637     # specs expanded.
638     # Note, it does not check for inclusion loops, which cause it
639     # to never finish - but such loops are invalid for gcc and we're
640     # assuming gcc is operational.
641     gcc-specs-directive() {
642     local directive subdname subdirective
643     directive="$(_gcc-specs-directive_raw $1)"
644     while [[ ${directive} == *%\(*\)* ]]; do
645     subdname=${directive/*%\(}
646     subdname=${subdname/\)*}
647     subdirective="$(_gcc-specs-directive_raw ${subdname})"
648     directive="${directive//\%(${subdname})/${subdirective}}"
649     done
650     echo "${directive}"
651     return 0
652     }
653    
654 kevquinn 1.41 # Returns true if gcc sets relro
655     gcc-specs-relro() {
656     local directive
657     directive=$(gcc-specs-directive link_command)
658 blueness 1.128 [[ "${directive/\{!norelro:}" != "${directive}" ]]
659 kevquinn 1.41 }
660     # Returns true if gcc sets now
661     gcc-specs-now() {
662     local directive
663     directive=$(gcc-specs-directive link_command)
664 blueness 1.128 [[ "${directive/\{!nonow:}" != "${directive}" ]]
665 kevquinn 1.41 }
666     # Returns true if gcc builds PIEs
667     gcc-specs-pie() {
668     local directive
669     directive=$(gcc-specs-directive cc1)
670 blueness 1.128 [[ "${directive/\{!nopie:}" != "${directive}" ]]
671 kevquinn 1.41 }
672     # Returns true if gcc builds with the stack protector
673     gcc-specs-ssp() {
674     local directive
675     directive=$(gcc-specs-directive cc1)
676 blueness 1.128 [[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]]
677 kevquinn 1.41 }
678 kevquinn 1.46 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
679     gcc-specs-ssp-to-all() {
680     local directive
681     directive=$(gcc-specs-directive cc1)
682 blueness 1.128 [[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]]
683 kevquinn 1.46 }
684 gengor 1.80 # Returns true if gcc builds with fno-strict-overflow
685     gcc-specs-nostrict() {
686     local directive
687     directive=$(gcc-specs-directive cc1)
688 blueness 1.128 [[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]
689 gengor 1.80 }
690 blueness 1.129 # Returns true if gcc builds with fstack-check
691     gcc-specs-stack-check() {
692     local directive
693     directive=$(gcc-specs-directive cc1)
694     [[ "${directive/\{!fno-stack-check:}" != "${directive}" ]]
695     }
696 vapier 1.60
697    
698 vapier 1.74 # @FUNCTION: gen_usr_ldscript
699 vapier 1.85 # @USAGE: [-a] <list of libs to create linker scripts for>
700 vapier 1.74 # @DESCRIPTION:
701 vapier 1.60 # This function generate linker scripts in /usr/lib for dynamic
702     # libs in /lib. This is to fix linking problems when you have
703     # the .so in /lib, and the .a in /usr/lib. What happens is that
704     # in some cases when linking dynamic, the .a in /usr/lib is used
705     # instead of the .so in /lib due to gcc/libtool tweaking ld's
706 vapier 1.74 # library search path. This causes many builds to fail.
707 vapier 1.60 # See bug #4411 for more info.
708     #
709     # Note that you should in general use the unversioned name of
710 vapier 1.74 # the library (libfoo.so), as ldconfig should usually update it
711     # correctly to point to the latest version of the library present.
712 vapier 1.70 gen_usr_ldscript() {
713 vapier 1.85 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
714 grobian 1.91 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
715    
716     tc-is-static-only && return
717    
718 vapier 1.113 # Eventually we'd like to get rid of this func completely #417451
719     case ${CTARGET:-${CHOST}} in
720     *-darwin*) ;;
721 vapier 1.115 *linux*|*-freebsd*|*-openbsd*|*-netbsd*)
722 vapier 1.114 use prefix && return 0 ;;
723 vapier 1.113 *) return 0 ;;
724     esac
725    
726 vapier 1.60 # Just make sure it exists
727     dodir /usr/${libdir}
728    
729 vapier 1.85 if [[ $1 == "-a" ]] ; then
730     auto=true
731     shift
732     dodir /${libdir}
733     fi
734    
735 vapier 1.60 # OUTPUT_FORMAT gives hints to the linker as to what binary format
736     # is referenced ... makes multilib saner
737 vapier 1.123 local flags=( ${CFLAGS} ${LDFLAGS} -Wl,--verbose )
738     if $(tc-getLD) --version | grep -q 'GNU gold' ; then
739     # If they're using gold, manually invoke the old bfd. #487696
740     local d="${T}/bfd-linker"
741     mkdir -p "${d}"
742     ln -sf $(which ${CHOST}-ld.bfd) "${d}"/ld
743     flags+=( -B"${d}" )
744     fi
745     output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
746 vapier 1.60 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
747    
748     for lib in "$@" ; do
749 grobian 1.91 local tlib
750     if ${auto} ; then
751     lib="lib${lib}${suffix}"
752 grobian 1.90 else
753 grobian 1.91 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
754     # This especially is for AIX where $(get_libname) can return ".a",
755     # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
756     [[ -r ${ED}/${libdir}/${lib} ]] || continue
757     #TODO: better die here?
758     fi
759    
760     case ${CTARGET:-${CHOST}} in
761     *-darwin*)
762 vapier 1.85 if ${auto} ; then
763 grobian 1.91 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
764     else
765     tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
766     fi
767     [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
768     tlib=${tlib##*/}
769    
770     if ${auto} ; then
771     mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
772 grobian 1.92 # some install_names are funky: they encode a version
773     if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
774     mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
775     fi
776 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
777     fi
778    
779     # Mach-O files have an id, which is like a soname, it tells how
780     # another object linking against this lib should reference it.
781     # Since we moved the lib from usr/lib into lib this reference is
782     # wrong. Hence, we update it here. We don't configure with
783     # libdir=/lib because that messes up libtool files.
784     # Make sure we don't lose the specific version, so just modify the
785     # existing install_name
786 grobian 1.94 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
787 grobian 1.95 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
788 grobian 1.94 local nowrite=yes
789     fi
790 grobian 1.91 install_name_tool \
791     -id "${EPREFIX}"/${libdir}/${tlib} \
792 grobian 1.94 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
793 grobian 1.95 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
794 grobian 1.91 # Now as we don't use GNU binutils and our linker doesn't
795     # understand linker scripts, just create a symlink.
796     pushd "${ED}/usr/${libdir}" > /dev/null
797     ln -snf "../../${libdir}/${tlib}" "${lib}"
798     popd > /dev/null
799     ;;
800 vapier 1.114 *)
801 grobian 1.91 if ${auto} ; then
802     tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
803     [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
804     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
805 vapier 1.88 # some SONAMEs are funky: they encode a version before the .so
806     if [[ ${tlib} != ${lib}* ]] ; then
807 grobian 1.91 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
808 vapier 1.88 fi
809 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
810 vapier 1.85 else
811     tlib=${lib}
812     fi
813 grobian 1.91 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
814 grobian 1.61 /* GNU ld script
815 vapier 1.87 Since Gentoo has critical dynamic libraries in /lib, and the static versions
816     in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
817     run into linking problems. This "fake" dynamic lib is a linker script that
818     redirects the linker to the real lib. And yes, this works in the cross-
819     compiling scenario as the sysroot-ed linker will prepend the real path.
820 grobian 1.61
821     See bug http://bugs.gentoo.org/4411 for more info.
822     */
823     ${output_format}
824 grobian 1.91 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
825 grobian 1.61 END_LDSCRIPT
826 grobian 1.91 ;;
827     esac
828     fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
829 vapier 1.60 done
830     }
831 vapier 1.109
832     fi

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