/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.117 - (hide annotations) (download)
Sat Sep 15 16:16:53 2012 UTC (2 years, 2 months ago) by zmedico
Branch: MAIN
Changes since 1.116: +2 -4 lines
Remove redundant DESCRIPTION variable settings.

1 zmedico 1.117 # Copyright 1999-2012 Gentoo Foundation
2 vapier 1.1 # Distributed under the terms of the GNU General Public License v2
3 zmedico 1.117 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.116 2012/09/13 05:06:34 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 1.105 # 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 "$@"; }
87 vapier 1.74 # @FUNCTION: tc-getF77
88     # @USAGE: [toolchain prefix]
89     # @RETURN: name of the Fortran 77 compiler
90 dberkholz 1.101 tc-getF77() { tc-getPROG F77 gfortran "$@"; }
91 dberkholz 1.78 # @FUNCTION: tc-getFC
92 vapier 1.74 # @USAGE: [toolchain prefix]
93     # @RETURN: name of the Fortran 90 compiler
94 dberkholz 1.78 tc-getFC() { tc-getPROG FC gfortran "$@"; }
95 vapier 1.74 # @FUNCTION: tc-getGCJ
96     # @USAGE: [toolchain prefix]
97     # @RETURN: name of the java compiler
98 vapier 1.33 tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
99 vapier 1.96 # @FUNCTION: tc-getPKG_CONFIG
100     # @USAGE: [toolchain prefix]
101     # @RETURN: name of the pkg-config tool
102     tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
103 vapier 1.98 # @FUNCTION: tc-getRC
104     # @USAGE: [toolchain prefix]
105     # @RETURN: name of the Windows resource compiler
106     tc-getRC() { tc-getPROG RC windres "$@"; }
107     # @FUNCTION: tc-getDLLWRAP
108     # @USAGE: [toolchain prefix]
109     # @RETURN: name of the Windows dllwrap utility
110     tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
111 vapier 1.1
112 vapier 1.107 # @FUNCTION: tc-getBUILD_AR
113     # @USAGE: [toolchain prefix]
114     # @RETURN: name of the archiver for building binaries to run on the build machine
115     tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
116     # @FUNCTION: tc-getBUILD_AS
117     # @USAGE: [toolchain prefix]
118     # @RETURN: name of the assembler for building binaries to run on the build machine
119     tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
120 vapier 1.74 # @FUNCTION: tc-getBUILD_CC
121     # @USAGE: [toolchain prefix]
122     # @RETURN: name of the C compiler for building binaries to run on the build machine
123 vapier 1.107 tc-getBUILD_CC() { tc-getBUILD_PROG CC gcc "$@"; }
124 vapier 1.105 # @FUNCTION: tc-getBUILD_CPP
125     # @USAGE: [toolchain prefix]
126     # @RETURN: name of the C preprocessor for building binaries to run on the build machine
127 vapier 1.107 tc-getBUILD_CPP() { tc-getBUILD_PROG CPP cpp "$@"; }
128 vapier 1.105 # @FUNCTION: tc-getBUILD_CXX
129     # @USAGE: [toolchain prefix]
130     # @RETURN: name of the C++ compiler for building binaries to run on the build machine
131 vapier 1.107 tc-getBUILD_CXX() { tc-getBUILD_PROG CXX g++ "$@"; }
132     # @FUNCTION: tc-getBUILD_LD
133     # @USAGE: [toolchain prefix]
134     # @RETURN: name of the linker for building binaries to run on the build machine
135     tc-getBUILD_LD() { tc-getBUILD_PROG LD ld "$@"; }
136     # @FUNCTION: tc-getBUILD_STRIP
137     # @USAGE: [toolchain prefix]
138     # @RETURN: name of the strip program for building binaries to run on the build machine
139     tc-getBUILD_STRIP() { tc-getBUILD_PROG STRIP strip "$@"; }
140     # @FUNCTION: tc-getBUILD_NM
141     # @USAGE: [toolchain prefix]
142     # @RETURN: name of the symbol/object thingy for building binaries to run on the build machine
143     tc-getBUILD_NM() { tc-getBUILD_PROG NM nm "$@"; }
144     # @FUNCTION: tc-getBUILD_RANLIB
145     # @USAGE: [toolchain prefix]
146     # @RETURN: name of the archiver indexer for building binaries to run on the build machine
147     tc-getBUILD_RANLIB() { tc-getBUILD_PROG RANLIB ranlib "$@"; }
148     # @FUNCTION: tc-getBUILD_OBJCOPY
149     # @USAGE: [toolchain prefix]
150     # @RETURN: name of the object copier for building binaries to run on the build machine
151     tc-getBUILD_OBJCOPY() { tc-getBUILD_PROG OBJCOPY objcopy "$@"; }
152     # @FUNCTION: tc-getBUILD_PKG_CONFIG
153     # @USAGE: [toolchain prefix]
154     # @RETURN: name of the pkg-config tool for building binaries to run on the build machine
155     tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
156 vapier 1.1
157 vapier 1.74 # @FUNCTION: tc-export
158     # @USAGE: <list of toolchain variables>
159     # @DESCRIPTION:
160     # Quick way to export a bunch of compiler vars at once.
161 vapier 1.10 tc-export() {
162     local var
163     for var in "$@" ; do
164 vapier 1.79 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
165 vapier 1.36 eval tc-get${var} > /dev/null
166 vapier 1.10 done
167     }
168    
169 vapier 1.74 # @FUNCTION: tc-is-cross-compiler
170     # @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
171 vapier 1.12 tc-is-cross-compiler() {
172 vapier 1.43 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
173 vapier 1.12 }
174    
175 vapier 1.74 # @FUNCTION: tc-is-softfloat
176     # @DESCRIPTION:
177 vapier 1.65 # See if this toolchain is a softfloat based one.
178 vapier 1.74 # @CODE
179 vapier 1.65 # The possible return values:
180 vapier 1.111 # - only: the target is always softfloat (never had fpu)
181     # - yes: the target should support softfloat
182     # - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
183     # - no: the target doesn't support softfloat
184 vapier 1.74 # @CODE
185 vapier 1.65 # This allows us to react differently where packages accept
186     # softfloat flags in the case where support is optional, but
187     # rejects softfloat flags where the target always lacks an fpu.
188     tc-is-softfloat() {
189 vapier 1.110 local CTARGET=${CTARGET:-${CHOST}}
190 vapier 1.65 case ${CTARGET} in
191 vapier 1.66 bfin*|h8300*)
192 vapier 1.65 echo "only" ;;
193     *)
194 vapier 1.111 if [[ ${CTARGET//_/-} == *-softfloat-* ]] ; then
195     echo "yes"
196     elif [[ ${CTARGET//_/-} == *-softfp-* ]] ; then
197     echo "softfp"
198     else
199     echo "no"
200     fi
201 vapier 1.65 ;;
202     esac
203     }
204 vapier 1.1
205 grobian 1.91 # @FUNCTION: tc-is-static-only
206     # @DESCRIPTION:
207     # Return shell true if the target does not support shared libs, shell false
208     # otherwise.
209     tc-is-static-only() {
210     local host=${CTARGET:-${CHOST}}
211    
212     # *MiNT doesn't have shared libraries, only platform so far
213     return $([[ ${host} == *-mint* ]])
214     }
215    
216 vapier 1.112 # @FUNCTION: tc-export_build_env
217     # @USAGE: [compiler variables]
218     # @DESCRIPTION:
219     # Export common build related compiler settings.
220     tc-export_build_env() {
221     tc-export "$@"
222     : ${BUILD_CFLAGS:=-O1 -pipe}
223     : ${BUILD_CXXFLAGS:=-O1 -pipe}
224     : ${BUILD_CPPFLAGS:=}
225     : ${BUILD_LDFLAGS:=}
226     export BUILD_{C,CXX,CPP,LD}FLAGS
227     }
228    
229 vapier 1.108 # @FUNCTION: tc-env_build
230     # @USAGE: <command> [command args]
231     # @INTERNAL
232     # @DESCRIPTION:
233     # Setup the compile environment to the build tools and then execute the
234     # specified command. We use tc-getBUILD_XX here so that we work with
235     # all of the semi-[non-]standard env vars like $BUILD_CC which often
236     # the target build system does not check.
237     tc-env_build() {
238 vapier 1.112 tc-export_build_env
239     CFLAGS=${BUILD_CFLAGS} \
240     CXXFLAGS=${BUILD_CXXFLAGS} \
241 vapier 1.108 CPPFLAGS=${BUILD_CPPFLAGS} \
242     LDFLAGS=${BUILD_LDFLAGS} \
243     AR=$(tc-getBUILD_AR) \
244     AS=$(tc-getBUILD_AS) \
245     CC=$(tc-getBUILD_CC) \
246     CPP=$(tc-getBUILD_CPP) \
247     CXX=$(tc-getBUILD_CXX) \
248     LD=$(tc-getBUILD_LD) \
249     NM=$(tc-getBUILD_NM) \
250     PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
251     RANLIB=$(tc-getBUILD_RANLIB) \
252     "$@"
253     }
254    
255     # @FUNCTION: econf_build
256     # @USAGE: [econf flags]
257     # @DESCRIPTION:
258     # Sometimes we need to locally build up some tools to run on CBUILD because
259     # the package has helper utils which are compiled+executed when compiling.
260     # This won't work when cross-compiling as the CHOST is set to a target which
261     # we cannot natively execute.
262     #
263     # For example, the python package will build up a local python binary using
264     # a portable build system (configure+make), but then use that binary to run
265     # local python scripts to build up other components of the overall python.
266     # We cannot rely on the python binary in $PATH as that often times will be
267     # a different version, or not even installed in the first place. Instead,
268     # we compile the code in a different directory to run on CBUILD, and then
269     # use that binary when compiling the main package to run on CHOST.
270     #
271     # For example, with newer EAPIs, you'd do something like:
272     # @CODE
273     # src_configure() {
274     # ECONF_SOURCE=${S}
275     # if tc-is-cross-compiler ; then
276     # mkdir "${WORKDIR}"/${CBUILD}
277     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
278     # econf_build --disable-some-unused-stuff
279     # popd >/dev/null
280     # fi
281     # ... normal build paths ...
282     # }
283     # src_compile() {
284     # if tc-is-cross-compiler ; then
285     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
286     # emake one-or-two-build-tools
287     # ln/mv build-tools to normal build paths in ${S}/
288     # popd >/dev/null
289     # fi
290     # ... normal build paths ...
291     # }
292     # @CODE
293     econf_build() {
294     tc-env_build econf --build=${CBUILD:-${CHOST}} "$@"
295     }
296    
297 vapier 1.100 # @FUNCTION: tc-has-openmp
298     # @USAGE: [toolchain prefix]
299     # @DESCRIPTION:
300     # See if the toolchain supports OpenMP.
301     tc-has-openmp() {
302     local base="${T}/test-tc-openmp"
303     cat <<-EOF > "${base}.c"
304     #include <omp.h>
305     int main() {
306     int nthreads, tid, ret = 0;
307     #pragma omp parallel private(nthreads, tid)
308     {
309     tid = omp_get_thread_num();
310     nthreads = omp_get_num_threads(); ret += tid + nthreads;
311     }
312     return ret;
313     }
314     EOF
315     $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
316     local ret=$?
317     rm -f "${base}"*
318     return ${ret}
319     }
320    
321 vapier 1.97 # @FUNCTION: tc-has-tls
322     # @USAGE: [-s|-c|-l] [toolchain prefix]
323     # @DESCRIPTION:
324     # See if the toolchain supports thread local storage (TLS). Use -s to test the
325     # compiler, -c to also test the assembler, and -l to also test the C library
326     # (the default).
327     tc-has-tls() {
328     local base="${T}/test-tc-tls"
329     cat <<-EOF > "${base}.c"
330     int foo(int *i) {
331     static __thread int j = 0;
332     return *i ? j : *i;
333     }
334     EOF
335     local flags
336     case $1 in
337     -s) flags="-S";;
338     -c) flags="-c";;
339     -l) ;;
340     -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
341     esac
342     : ${flags:=-fPIC -shared -Wl,-z,defs}
343     [[ $1 == -* ]] && shift
344     $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
345     local ret=$?
346     rm -f "${base}"*
347     return ${ret}
348     }
349    
350 grobian 1.91
351 swegener 1.40 # Parse information from CBUILD/CHOST/CTARGET rather than
352 vapier 1.20 # use external variables from the profile.
353     tc-ninja_magic_to_arch() {
354 vapier 1.21 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
355 vapier 1.19
356     local type=$1
357     local host=$2
358 eradicator 1.25 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
359 vapier 1.19
360     case ${host} in
361 vapier 1.116 aarch64*) ninj aarch64 arm;;
362 vapier 1.19 alpha*) echo alpha;;
363     arm*) echo arm;;
364 vapier 1.72 avr*) ninj avr32 avr;;
365 vapier 1.53 bfin*) ninj blackfin bfin;;
366 vapier 1.47 cris*) echo cris;;
367 vapier 1.19 hppa*) ninj parisc hppa;;
368 vapier 1.75 i?86*)
369     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
370     # trees have been unified into 'x86'.
371 aballier 1.77 # FreeBSD still uses i386
372     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
373 vapier 1.75 echo i386
374     else
375     echo x86
376     fi
377     ;;
378 vapier 1.19 ia64*) echo ia64;;
379 vapier 1.23 m68*) echo m68k;;
380 vapier 1.19 mips*) echo mips;;
381 vapier 1.52 nios2*) echo nios2;;
382     nios*) echo nios;;
383 vapier 1.49 powerpc*)
384 vapier 1.103 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
385     # have been unified into simply 'powerpc', but until 2.6.16,
386     # ppc32 is still using ARCH="ppc" as default
387     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
388     echo powerpc
389     elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
390     if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
391     echo powerpc
392     else
393     echo ppc
394     fi
395     elif [[ ${host} == powerpc64* ]] ; then
396     echo ppc64
397     elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
398     ninj ppc64 ppc
399     else
400     echo ppc
401     fi
402     ;;
403 vapier 1.47 s390*) echo s390;;
404     sh64*) ninj sh64 sh;;
405     sh*) echo sh;;
406 vapier 1.19 sparc64*) ninj sparc64 sparc;;
407 vapier 1.28 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
408     && ninj sparc64 sparc \
409     || echo sparc
410     ;;
411 vapier 1.47 vax*) echo vax;;
412 aballier 1.104 x86_64*freebsd*) echo amd64;;
413 vapier 1.75 x86_64*)
414     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
415     # trees have been unified into 'x86'.
416     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
417     echo x86
418     else
419     ninj x86_64 amd64
420     fi
421     ;;
422 vapier 1.73
423     # since our usage of tc-arch is largely concerned with
424     # normalizing inputs for testing ${CTARGET}, let's filter
425     # other cross targets (mingw and such) into the unknown.
426     *) echo unknown;;
427 vapier 1.19 esac
428     }
429 vapier 1.74 # @FUNCTION: tc-arch-kernel
430     # @USAGE: [toolchain prefix]
431     # @RETURN: name of the kernel arch according to the compiler target
432 vapier 1.20 tc-arch-kernel() {
433 vapier 1.74 tc-ninja_magic_to_arch kern "$@"
434 vapier 1.19 }
435 vapier 1.74 # @FUNCTION: tc-arch
436     # @USAGE: [toolchain prefix]
437     # @RETURN: name of the portage arch according to the compiler target
438 vapier 1.20 tc-arch() {
439 vapier 1.74 tc-ninja_magic_to_arch portage "$@"
440 vapier 1.19 }
441 vapier 1.74
442 robbat2 1.71 tc-endian() {
443     local host=$1
444     [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
445     host=${host%%-*}
446    
447     case ${host} in
448 vapier 1.116 aarch64*be) echo big;;
449     aarch64) echo little;;
450 robbat2 1.71 alpha*) echo big;;
451     arm*b*) echo big;;
452     arm*) echo little;;
453     cris*) echo little;;
454     hppa*) echo big;;
455     i?86*) echo little;;
456     ia64*) echo little;;
457     m68*) echo big;;
458     mips*l*) echo little;;
459     mips*) echo big;;
460     powerpc*) echo big;;
461     s390*) echo big;;
462     sh*b*) echo big;;
463     sh*) echo little;;
464     sparc*) echo big;;
465     x86_64*) echo little;;
466     *) echo wtf;;
467     esac
468     }
469 vapier 1.19
470 vapier 1.102 # Internal func. The first argument is the version info to expand.
471     # Query the preprocessor to improve compatibility across different
472     # compilers rather than maintaining a --version flag matrix. #335943
473     _gcc_fullversion() {
474     local ver="$1"; shift
475     set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
476     eval echo "$ver"
477     }
478    
479 vapier 1.74 # @FUNCTION: gcc-fullversion
480     # @RETURN: compiler version (major.minor.micro: [3.4.6])
481 vapier 1.1 gcc-fullversion() {
482 vapier 1.102 _gcc_fullversion '$1.$2.$3' "$@"
483 vapier 1.1 }
484 vapier 1.74 # @FUNCTION: gcc-version
485     # @RETURN: compiler version (major.minor: [3.4].6)
486 vapier 1.1 gcc-version() {
487 vapier 1.102 _gcc_fullversion '$1.$2' "$@"
488 vapier 1.1 }
489 vapier 1.74 # @FUNCTION: gcc-major-version
490     # @RETURN: major compiler version (major: [3].4.6)
491 vapier 1.1 gcc-major-version() {
492 vapier 1.102 _gcc_fullversion '$1' "$@"
493 vapier 1.1 }
494 vapier 1.74 # @FUNCTION: gcc-minor-version
495     # @RETURN: minor compiler version (minor: 3.[4].6)
496 vapier 1.1 gcc-minor-version() {
497 vapier 1.102 _gcc_fullversion '$2' "$@"
498 vapier 1.1 }
499 vapier 1.74 # @FUNCTION: gcc-micro-version
500     # @RETURN: micro compiler version (micro: 3.4.[6])
501 vapier 1.1 gcc-micro-version() {
502 vapier 1.102 _gcc_fullversion '$3' "$@"
503 vapier 1.1 }
504 vapier 1.74
505 kevquinn 1.68 # Returns the installation directory - internal toolchain
506     # function for use by _gcc-specs-exists (for flag-o-matic).
507     _gcc-install-dir() {
508 vapier 1.76 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
509 kevquinn 1.68 awk '$1=="install:" {print $2}')"
510     }
511     # Returns true if the indicated specs file exists - internal toolchain
512     # function for use by flag-o-matic.
513     _gcc-specs-exists() {
514     [[ -f $(_gcc-install-dir)/$1 ]]
515     }
516 kevquinn 1.41
517 kevquinn 1.68 # Returns requested gcc specs directive unprocessed - for used by
518     # gcc-specs-directive()
519 kevquinn 1.46 # Note; later specs normally overwrite earlier ones; however if a later
520     # spec starts with '+' then it appends.
521     # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
522 kevquinn 1.68 # as "Reading <file>", in order. Strictly speaking, if there's a
523     # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
524     # the same token anything from 'gcc -dumpspecs' is overridden by
525     # the contents of $(gcc_install_dir)/specs so the result is the
526     # same either way.
527     _gcc-specs-directive_raw() {
528 kevquinn 1.57 local cc=$(tc-getCC)
529     local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
530     ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
531 kevquinn 1.46 'BEGIN { pspec=""; spec=""; outside=1 }
532     $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
533 kevquinn 1.41 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
534 kevquinn 1.46 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
535     { spec=spec $0 }
536     END { print spec }'
537     return 0
538 kevquinn 1.41 }
539    
540 kevquinn 1.68 # Return the requested gcc specs directive, with all included
541     # specs expanded.
542     # Note, it does not check for inclusion loops, which cause it
543     # to never finish - but such loops are invalid for gcc and we're
544     # assuming gcc is operational.
545     gcc-specs-directive() {
546     local directive subdname subdirective
547     directive="$(_gcc-specs-directive_raw $1)"
548     while [[ ${directive} == *%\(*\)* ]]; do
549     subdname=${directive/*%\(}
550     subdname=${subdname/\)*}
551     subdirective="$(_gcc-specs-directive_raw ${subdname})"
552     directive="${directive//\%(${subdname})/${subdirective}}"
553     done
554     echo "${directive}"
555     return 0
556     }
557    
558 kevquinn 1.41 # Returns true if gcc sets relro
559     gcc-specs-relro() {
560     local directive
561     directive=$(gcc-specs-directive link_command)
562 gengor 1.84 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
563 kevquinn 1.41 }
564     # Returns true if gcc sets now
565     gcc-specs-now() {
566     local directive
567     directive=$(gcc-specs-directive link_command)
568 gengor 1.84 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
569 kevquinn 1.41 }
570     # Returns true if gcc builds PIEs
571     gcc-specs-pie() {
572     local directive
573     directive=$(gcc-specs-directive cc1)
574 gengor 1.84 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
575 kevquinn 1.41 }
576     # Returns true if gcc builds with the stack protector
577     gcc-specs-ssp() {
578     local directive
579     directive=$(gcc-specs-directive cc1)
580 gengor 1.84 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
581 kevquinn 1.41 }
582 kevquinn 1.46 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
583     gcc-specs-ssp-to-all() {
584     local directive
585     directive=$(gcc-specs-directive cc1)
586 gengor 1.84 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
587 kevquinn 1.46 }
588 gengor 1.80 # Returns true if gcc builds with fno-strict-overflow
589     gcc-specs-nostrict() {
590     local directive
591     directive=$(gcc-specs-directive cc1)
592 gengor 1.84 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
593 gengor 1.80 }
594 vapier 1.60
595    
596 vapier 1.74 # @FUNCTION: gen_usr_ldscript
597 vapier 1.85 # @USAGE: [-a] <list of libs to create linker scripts for>
598 vapier 1.74 # @DESCRIPTION:
599 vapier 1.60 # This function generate linker scripts in /usr/lib for dynamic
600     # libs in /lib. This is to fix linking problems when you have
601     # the .so in /lib, and the .a in /usr/lib. What happens is that
602     # in some cases when linking dynamic, the .a in /usr/lib is used
603     # instead of the .so in /lib due to gcc/libtool tweaking ld's
604 vapier 1.74 # library search path. This causes many builds to fail.
605 vapier 1.60 # See bug #4411 for more info.
606     #
607     # Note that you should in general use the unversioned name of
608 vapier 1.74 # the library (libfoo.so), as ldconfig should usually update it
609     # correctly to point to the latest version of the library present.
610 vapier 1.70 gen_usr_ldscript() {
611 vapier 1.85 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
612 grobian 1.91 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
613    
614     tc-is-static-only && return
615    
616 vapier 1.113 # Eventually we'd like to get rid of this func completely #417451
617     case ${CTARGET:-${CHOST}} in
618     *-darwin*) ;;
619 vapier 1.115 *linux*|*-freebsd*|*-openbsd*|*-netbsd*)
620 vapier 1.114 use prefix && return 0 ;;
621 vapier 1.113 *) return 0 ;;
622     esac
623    
624 vapier 1.60 # Just make sure it exists
625     dodir /usr/${libdir}
626    
627 vapier 1.85 if [[ $1 == "-a" ]] ; then
628     auto=true
629     shift
630     dodir /${libdir}
631     fi
632    
633 vapier 1.60 # OUTPUT_FORMAT gives hints to the linker as to what binary format
634     # is referenced ... makes multilib saner
635     output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
636     [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
637    
638     for lib in "$@" ; do
639 grobian 1.91 local tlib
640     if ${auto} ; then
641     lib="lib${lib}${suffix}"
642 grobian 1.90 else
643 grobian 1.91 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
644     # This especially is for AIX where $(get_libname) can return ".a",
645     # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
646     [[ -r ${ED}/${libdir}/${lib} ]] || continue
647     #TODO: better die here?
648     fi
649    
650     case ${CTARGET:-${CHOST}} in
651     *-darwin*)
652 vapier 1.85 if ${auto} ; then
653 grobian 1.91 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
654     else
655     tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
656     fi
657     [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
658     tlib=${tlib##*/}
659    
660     if ${auto} ; then
661     mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
662 grobian 1.92 # some install_names are funky: they encode a version
663     if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
664     mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
665     fi
666 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
667     fi
668    
669     # Mach-O files have an id, which is like a soname, it tells how
670     # another object linking against this lib should reference it.
671     # Since we moved the lib from usr/lib into lib this reference is
672     # wrong. Hence, we update it here. We don't configure with
673     # libdir=/lib because that messes up libtool files.
674     # Make sure we don't lose the specific version, so just modify the
675     # existing install_name
676 grobian 1.94 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
677 grobian 1.95 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
678 grobian 1.94 local nowrite=yes
679     fi
680 grobian 1.91 install_name_tool \
681     -id "${EPREFIX}"/${libdir}/${tlib} \
682 grobian 1.94 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
683 grobian 1.95 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
684 grobian 1.91 # Now as we don't use GNU binutils and our linker doesn't
685     # understand linker scripts, just create a symlink.
686     pushd "${ED}/usr/${libdir}" > /dev/null
687     ln -snf "../../${libdir}/${tlib}" "${lib}"
688     popd > /dev/null
689     ;;
690 vapier 1.114 *)
691 grobian 1.91 if ${auto} ; then
692     tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
693     [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
694     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
695 vapier 1.88 # some SONAMEs are funky: they encode a version before the .so
696     if [[ ${tlib} != ${lib}* ]] ; then
697 grobian 1.91 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
698 vapier 1.88 fi
699 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
700 vapier 1.85 else
701     tlib=${lib}
702     fi
703 grobian 1.91 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
704 grobian 1.61 /* GNU ld script
705 vapier 1.87 Since Gentoo has critical dynamic libraries in /lib, and the static versions
706     in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
707     run into linking problems. This "fake" dynamic lib is a linker script that
708     redirects the linker to the real lib. And yes, this works in the cross-
709     compiling scenario as the sysroot-ed linker will prepend the real path.
710 grobian 1.61
711     See bug http://bugs.gentoo.org/4411 for more info.
712     */
713     ${output_format}
714 grobian 1.91 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
715 grobian 1.61 END_LDSCRIPT
716 grobian 1.91 ;;
717     esac
718     fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
719 vapier 1.60 done
720     }
721 vapier 1.109
722     fi

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