/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.112 - (hide annotations) (download)
Thu Jun 14 03:38:51 2012 UTC (2 years, 2 months ago) by vapier
Branch: MAIN
Changes since 1.111: +17 -3 lines
unify build env var setup a bit so other packages can use it #391363

1 vapier 1.108 # Copyright 1999-2011 Gentoo Foundation
2 vapier 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.112 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.111 2012/06/09 06:56:14 vapier Exp $
4 vapier 1.74
5     # @ECLASS: toolchain-funcs.eclass
6     # @MAINTAINER:
7     # Toolchain Ninjas <toolchain@gentoo.org>
8     # @BLURB: functions to query common info about the toolchain
9     # @DESCRIPTION:
10     # The toolchain-funcs aims to provide a complete suite of functions
11     # for gleaning useful information about the toolchain and to simplify
12     # ugly things like cross-compiling and multilib. All of this is done
13     # in such a way that you can rely on the function always returning
14     # something sane.
15 vapier 1.1
16 vapier 1.109 if [[ ${___ECLASS_ONCE_TOOLCHAIN_FUNCS} != "recur -_+^+_- spank" ]] ; then
17     ___ECLASS_ONCE_TOOLCHAIN_FUNCS="recur -_+^+_- spank"
18    
19     inherit multilib
20 eradicator 1.34
21 vapier 1.1 DESCRIPTION="Based on the ${ECLASS} eclass"
22    
23 vapier 1.105 # tc-getPROG <VAR [search vars]> <default> [tuple]
24     _tc-getPROG() {
25     local tuple=$1
26     local v var vars=$2
27     local prog=$3
28    
29     var=${vars%% *}
30     for v in ${vars} ; do
31     if [[ -n ${!v} ]] ; then
32 vapier 1.106 export ${var}="${!v}"
33 vapier 1.105 echo "${!v}"
34     return 0
35     fi
36     done
37 vapier 1.1
38 eradicator 1.35 local search=
39 vapier 1.105 [[ -n $4 ]] && search=$(type -p "$4-${prog}")
40     [[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}")
41 eradicator 1.35 [[ -n ${search} ]] && prog=${search##*/}
42 vapier 1.1
43 vapier 1.17 export ${var}=${prog}
44 vapier 1.1 echo "${!var}"
45     }
46 vapier 1.107 tc-getBUILD_PROG() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; }
47 vapier 1.105 tc-getPROG() { _tc-getPROG CHOST "$@"; }
48 vapier 1.1
49 vapier 1.74 # @FUNCTION: tc-getAR
50     # @USAGE: [toolchain prefix]
51     # @RETURN: name of the archiver
52 vapier 1.33 tc-getAR() { tc-getPROG AR ar "$@"; }
53 vapier 1.74 # @FUNCTION: tc-getAS
54     # @USAGE: [toolchain prefix]
55     # @RETURN: name of the assembler
56 vapier 1.33 tc-getAS() { tc-getPROG AS as "$@"; }
57 vapier 1.74 # @FUNCTION: tc-getCC
58     # @USAGE: [toolchain prefix]
59     # @RETURN: name of the C compiler
60 vapier 1.33 tc-getCC() { tc-getPROG CC gcc "$@"; }
61 vapier 1.74 # @FUNCTION: tc-getCPP
62     # @USAGE: [toolchain prefix]
63     # @RETURN: name of the C preprocessor
64 robbat2 1.58 tc-getCPP() { tc-getPROG CPP cpp "$@"; }
65 vapier 1.74 # @FUNCTION: tc-getCXX
66     # @USAGE: [toolchain prefix]
67     # @RETURN: name of the C++ compiler
68 vapier 1.33 tc-getCXX() { tc-getPROG CXX g++ "$@"; }
69 vapier 1.74 # @FUNCTION: tc-getLD
70     # @USAGE: [toolchain prefix]
71     # @RETURN: name of the linker
72 vapier 1.33 tc-getLD() { tc-getPROG LD ld "$@"; }
73 vapier 1.74 # @FUNCTION: tc-getSTRIP
74     # @USAGE: [toolchain prefix]
75     # @RETURN: name of the strip program
76 kanaka 1.59 tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
77 vapier 1.74 # @FUNCTION: tc-getNM
78     # @USAGE: [toolchain prefix]
79     # @RETURN: name of the symbol/object thingy
80 vapier 1.33 tc-getNM() { tc-getPROG NM nm "$@"; }
81 vapier 1.74 # @FUNCTION: tc-getRANLIB
82     # @USAGE: [toolchain prefix]
83     # @RETURN: name of the archiver indexer
84 vapier 1.33 tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
85 kumba 1.86 # @FUNCTION: tc-getOBJCOPY
86     # @USAGE: [toolchain prefix]
87     # @RETURN: name of the object copier
88     tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
89 vapier 1.74 # @FUNCTION: tc-getF77
90     # @USAGE: [toolchain prefix]
91     # @RETURN: name of the Fortran 77 compiler
92 dberkholz 1.101 tc-getF77() { tc-getPROG F77 gfortran "$@"; }
93 dberkholz 1.78 # @FUNCTION: tc-getFC
94 vapier 1.74 # @USAGE: [toolchain prefix]
95     # @RETURN: name of the Fortran 90 compiler
96 dberkholz 1.78 tc-getFC() { tc-getPROG FC gfortran "$@"; }
97 vapier 1.74 # @FUNCTION: tc-getGCJ
98     # @USAGE: [toolchain prefix]
99     # @RETURN: name of the java compiler
100 vapier 1.33 tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
101 vapier 1.96 # @FUNCTION: tc-getPKG_CONFIG
102     # @USAGE: [toolchain prefix]
103     # @RETURN: name of the pkg-config tool
104     tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
105 vapier 1.98 # @FUNCTION: tc-getRC
106     # @USAGE: [toolchain prefix]
107     # @RETURN: name of the Windows resource compiler
108     tc-getRC() { tc-getPROG RC windres "$@"; }
109     # @FUNCTION: tc-getDLLWRAP
110     # @USAGE: [toolchain prefix]
111     # @RETURN: name of the Windows dllwrap utility
112     tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
113 vapier 1.1
114 vapier 1.107 # @FUNCTION: tc-getBUILD_AR
115     # @USAGE: [toolchain prefix]
116     # @RETURN: name of the archiver for building binaries to run on the build machine
117     tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
118     # @FUNCTION: tc-getBUILD_AS
119     # @USAGE: [toolchain prefix]
120     # @RETURN: name of the assembler for building binaries to run on the build machine
121     tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
122 vapier 1.74 # @FUNCTION: tc-getBUILD_CC
123     # @USAGE: [toolchain prefix]
124     # @RETURN: name of the C compiler for building binaries to run on the build machine
125 vapier 1.107 tc-getBUILD_CC() { tc-getBUILD_PROG CC gcc "$@"; }
126 vapier 1.105 # @FUNCTION: tc-getBUILD_CPP
127     # @USAGE: [toolchain prefix]
128     # @RETURN: name of the C preprocessor for building binaries to run on the build machine
129 vapier 1.107 tc-getBUILD_CPP() { tc-getBUILD_PROG CPP cpp "$@"; }
130 vapier 1.105 # @FUNCTION: tc-getBUILD_CXX
131     # @USAGE: [toolchain prefix]
132     # @RETURN: name of the C++ compiler for building binaries to run on the build machine
133 vapier 1.107 tc-getBUILD_CXX() { tc-getBUILD_PROG CXX g++ "$@"; }
134     # @FUNCTION: tc-getBUILD_LD
135     # @USAGE: [toolchain prefix]
136     # @RETURN: name of the linker for building binaries to run on the build machine
137     tc-getBUILD_LD() { tc-getBUILD_PROG LD ld "$@"; }
138     # @FUNCTION: tc-getBUILD_STRIP
139     # @USAGE: [toolchain prefix]
140     # @RETURN: name of the strip program for building binaries to run on the build machine
141     tc-getBUILD_STRIP() { tc-getBUILD_PROG STRIP strip "$@"; }
142     # @FUNCTION: tc-getBUILD_NM
143     # @USAGE: [toolchain prefix]
144     # @RETURN: name of the symbol/object thingy for building binaries to run on the build machine
145     tc-getBUILD_NM() { tc-getBUILD_PROG NM nm "$@"; }
146     # @FUNCTION: tc-getBUILD_RANLIB
147     # @USAGE: [toolchain prefix]
148     # @RETURN: name of the archiver indexer for building binaries to run on the build machine
149     tc-getBUILD_RANLIB() { tc-getBUILD_PROG RANLIB ranlib "$@"; }
150     # @FUNCTION: tc-getBUILD_OBJCOPY
151     # @USAGE: [toolchain prefix]
152     # @RETURN: name of the object copier for building binaries to run on the build machine
153     tc-getBUILD_OBJCOPY() { tc-getBUILD_PROG OBJCOPY objcopy "$@"; }
154     # @FUNCTION: tc-getBUILD_PKG_CONFIG
155     # @USAGE: [toolchain prefix]
156     # @RETURN: name of the pkg-config tool for building binaries to run on the build machine
157     tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
158 vapier 1.1
159 vapier 1.74 # @FUNCTION: tc-export
160     # @USAGE: <list of toolchain variables>
161     # @DESCRIPTION:
162     # Quick way to export a bunch of compiler vars at once.
163 vapier 1.10 tc-export() {
164     local var
165     for var in "$@" ; do
166 vapier 1.79 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
167 vapier 1.36 eval tc-get${var} > /dev/null
168 vapier 1.10 done
169     }
170    
171 vapier 1.74 # @FUNCTION: tc-is-cross-compiler
172     # @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
173 vapier 1.12 tc-is-cross-compiler() {
174 vapier 1.43 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
175 vapier 1.12 }
176    
177 vapier 1.74 # @FUNCTION: tc-is-softfloat
178     # @DESCRIPTION:
179 vapier 1.65 # See if this toolchain is a softfloat based one.
180 vapier 1.74 # @CODE
181 vapier 1.65 # The possible return values:
182 vapier 1.111 # - only: the target is always softfloat (never had fpu)
183     # - yes: the target should support softfloat
184     # - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
185     # - no: the target doesn't support softfloat
186 vapier 1.74 # @CODE
187 vapier 1.65 # This allows us to react differently where packages accept
188     # softfloat flags in the case where support is optional, but
189     # rejects softfloat flags where the target always lacks an fpu.
190     tc-is-softfloat() {
191 vapier 1.110 local CTARGET=${CTARGET:-${CHOST}}
192 vapier 1.65 case ${CTARGET} in
193 vapier 1.66 bfin*|h8300*)
194 vapier 1.65 echo "only" ;;
195     *)
196 vapier 1.111 if [[ ${CTARGET//_/-} == *-softfloat-* ]] ; then
197     echo "yes"
198     elif [[ ${CTARGET//_/-} == *-softfp-* ]] ; then
199     echo "softfp"
200     else
201     echo "no"
202     fi
203 vapier 1.65 ;;
204     esac
205     }
206 vapier 1.1
207 grobian 1.91 # @FUNCTION: tc-is-static-only
208     # @DESCRIPTION:
209     # Return shell true if the target does not support shared libs, shell false
210     # otherwise.
211     tc-is-static-only() {
212     local host=${CTARGET:-${CHOST}}
213    
214     # *MiNT doesn't have shared libraries, only platform so far
215     return $([[ ${host} == *-mint* ]])
216     }
217    
218 vapier 1.112 # @FUNCTION: tc-export_build_env
219     # @USAGE: [compiler variables]
220     # @DESCRIPTION:
221     # Export common build related compiler settings.
222     tc-export_build_env() {
223     tc-export "$@"
224     : ${BUILD_CFLAGS:=-O1 -pipe}
225     : ${BUILD_CXXFLAGS:=-O1 -pipe}
226     : ${BUILD_CPPFLAGS:=}
227     : ${BUILD_LDFLAGS:=}
228     export BUILD_{C,CXX,CPP,LD}FLAGS
229     }
230    
231 vapier 1.108 # @FUNCTION: tc-env_build
232     # @USAGE: <command> [command args]
233     # @INTERNAL
234     # @DESCRIPTION:
235     # Setup the compile environment to the build tools and then execute the
236     # specified command. We use tc-getBUILD_XX here so that we work with
237     # all of the semi-[non-]standard env vars like $BUILD_CC which often
238     # the target build system does not check.
239     tc-env_build() {
240 vapier 1.112 tc-export_build_env
241     CFLAGS=${BUILD_CFLAGS} \
242     CXXFLAGS=${BUILD_CXXFLAGS} \
243 vapier 1.108 CPPFLAGS=${BUILD_CPPFLAGS} \
244     LDFLAGS=${BUILD_LDFLAGS} \
245     AR=$(tc-getBUILD_AR) \
246     AS=$(tc-getBUILD_AS) \
247     CC=$(tc-getBUILD_CC) \
248     CPP=$(tc-getBUILD_CPP) \
249     CXX=$(tc-getBUILD_CXX) \
250     LD=$(tc-getBUILD_LD) \
251     NM=$(tc-getBUILD_NM) \
252     PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
253     RANLIB=$(tc-getBUILD_RANLIB) \
254     "$@"
255     }
256    
257     # @FUNCTION: econf_build
258     # @USAGE: [econf flags]
259     # @DESCRIPTION:
260     # Sometimes we need to locally build up some tools to run on CBUILD because
261     # the package has helper utils which are compiled+executed when compiling.
262     # This won't work when cross-compiling as the CHOST is set to a target which
263     # we cannot natively execute.
264     #
265     # For example, the python package will build up a local python binary using
266     # a portable build system (configure+make), but then use that binary to run
267     # local python scripts to build up other components of the overall python.
268     # We cannot rely on the python binary in $PATH as that often times will be
269     # a different version, or not even installed in the first place. Instead,
270     # we compile the code in a different directory to run on CBUILD, and then
271     # use that binary when compiling the main package to run on CHOST.
272     #
273     # For example, with newer EAPIs, you'd do something like:
274     # @CODE
275     # src_configure() {
276     # ECONF_SOURCE=${S}
277     # if tc-is-cross-compiler ; then
278     # mkdir "${WORKDIR}"/${CBUILD}
279     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
280     # econf_build --disable-some-unused-stuff
281     # popd >/dev/null
282     # fi
283     # ... normal build paths ...
284     # }
285     # src_compile() {
286     # if tc-is-cross-compiler ; then
287     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
288     # emake one-or-two-build-tools
289     # ln/mv build-tools to normal build paths in ${S}/
290     # popd >/dev/null
291     # fi
292     # ... normal build paths ...
293     # }
294     # @CODE
295     econf_build() {
296     tc-env_build econf --build=${CBUILD:-${CHOST}} "$@"
297     }
298    
299 vapier 1.100 # @FUNCTION: tc-has-openmp
300     # @USAGE: [toolchain prefix]
301     # @DESCRIPTION:
302     # See if the toolchain supports OpenMP.
303     tc-has-openmp() {
304     local base="${T}/test-tc-openmp"
305     cat <<-EOF > "${base}.c"
306     #include <omp.h>
307     int main() {
308     int nthreads, tid, ret = 0;
309     #pragma omp parallel private(nthreads, tid)
310     {
311     tid = omp_get_thread_num();
312     nthreads = omp_get_num_threads(); ret += tid + nthreads;
313     }
314     return ret;
315     }
316     EOF
317     $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
318     local ret=$?
319     rm -f "${base}"*
320     return ${ret}
321     }
322    
323 vapier 1.97 # @FUNCTION: tc-has-tls
324     # @USAGE: [-s|-c|-l] [toolchain prefix]
325     # @DESCRIPTION:
326     # See if the toolchain supports thread local storage (TLS). Use -s to test the
327     # compiler, -c to also test the assembler, and -l to also test the C library
328     # (the default).
329     tc-has-tls() {
330     local base="${T}/test-tc-tls"
331     cat <<-EOF > "${base}.c"
332     int foo(int *i) {
333     static __thread int j = 0;
334     return *i ? j : *i;
335     }
336     EOF
337     local flags
338     case $1 in
339     -s) flags="-S";;
340     -c) flags="-c";;
341     -l) ;;
342     -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
343     esac
344     : ${flags:=-fPIC -shared -Wl,-z,defs}
345     [[ $1 == -* ]] && shift
346     $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
347     local ret=$?
348     rm -f "${base}"*
349     return ${ret}
350     }
351    
352 grobian 1.91
353 swegener 1.40 # Parse information from CBUILD/CHOST/CTARGET rather than
354 vapier 1.20 # use external variables from the profile.
355     tc-ninja_magic_to_arch() {
356 vapier 1.21 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
357 vapier 1.19
358     local type=$1
359     local host=$2
360 eradicator 1.25 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
361 vapier 1.19
362     case ${host} in
363     alpha*) echo alpha;;
364     arm*) echo arm;;
365 vapier 1.72 avr*) ninj avr32 avr;;
366 vapier 1.53 bfin*) ninj blackfin bfin;;
367 vapier 1.47 cris*) echo cris;;
368 vapier 1.19 hppa*) ninj parisc hppa;;
369 vapier 1.75 i?86*)
370     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
371     # trees have been unified into 'x86'.
372 aballier 1.77 # FreeBSD still uses i386
373     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
374 vapier 1.75 echo i386
375     else
376     echo x86
377     fi
378     ;;
379 vapier 1.19 ia64*) echo ia64;;
380 vapier 1.23 m68*) echo m68k;;
381 vapier 1.19 mips*) echo mips;;
382 vapier 1.52 nios2*) echo nios2;;
383     nios*) echo nios;;
384 vapier 1.49 powerpc*)
385 vapier 1.103 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
386     # have been unified into simply 'powerpc', but until 2.6.16,
387     # ppc32 is still using ARCH="ppc" as default
388     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
389     echo powerpc
390     elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
391     if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
392     echo powerpc
393     else
394     echo ppc
395     fi
396     elif [[ ${host} == powerpc64* ]] ; then
397     echo ppc64
398     elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
399     ninj ppc64 ppc
400     else
401     echo ppc
402     fi
403     ;;
404 vapier 1.47 s390*) echo s390;;
405     sh64*) ninj sh64 sh;;
406     sh*) echo sh;;
407 vapier 1.19 sparc64*) ninj sparc64 sparc;;
408 vapier 1.28 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
409     && ninj sparc64 sparc \
410     || echo sparc
411     ;;
412 vapier 1.47 vax*) echo vax;;
413 aballier 1.104 x86_64*freebsd*) echo amd64;;
414 vapier 1.75 x86_64*)
415     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
416     # trees have been unified into 'x86'.
417     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
418     echo x86
419     else
420     ninj x86_64 amd64
421     fi
422     ;;
423 vapier 1.73
424     # since our usage of tc-arch is largely concerned with
425     # normalizing inputs for testing ${CTARGET}, let's filter
426     # other cross targets (mingw and such) into the unknown.
427     *) echo unknown;;
428 vapier 1.19 esac
429     }
430 vapier 1.74 # @FUNCTION: tc-arch-kernel
431     # @USAGE: [toolchain prefix]
432     # @RETURN: name of the kernel arch according to the compiler target
433 vapier 1.20 tc-arch-kernel() {
434 vapier 1.74 tc-ninja_magic_to_arch kern "$@"
435 vapier 1.19 }
436 vapier 1.74 # @FUNCTION: tc-arch
437     # @USAGE: [toolchain prefix]
438     # @RETURN: name of the portage arch according to the compiler target
439 vapier 1.20 tc-arch() {
440 vapier 1.74 tc-ninja_magic_to_arch portage "$@"
441 vapier 1.19 }
442 vapier 1.74
443 robbat2 1.71 tc-endian() {
444     local host=$1
445     [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
446     host=${host%%-*}
447    
448     case ${host} in
449     alpha*) echo big;;
450     arm*b*) echo big;;
451     arm*) echo little;;
452     cris*) echo little;;
453     hppa*) echo big;;
454     i?86*) echo little;;
455     ia64*) echo little;;
456     m68*) echo big;;
457     mips*l*) echo little;;
458     mips*) echo big;;
459     powerpc*) echo big;;
460     s390*) echo big;;
461     sh*b*) echo big;;
462     sh*) echo little;;
463     sparc*) echo big;;
464     x86_64*) echo little;;
465     *) echo wtf;;
466     esac
467     }
468 vapier 1.19
469 vapier 1.102 # Internal func. The first argument is the version info to expand.
470     # Query the preprocessor to improve compatibility across different
471     # compilers rather than maintaining a --version flag matrix. #335943
472     _gcc_fullversion() {
473     local ver="$1"; shift
474     set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
475     eval echo "$ver"
476     }
477    
478 vapier 1.74 # @FUNCTION: gcc-fullversion
479     # @RETURN: compiler version (major.minor.micro: [3.4.6])
480 vapier 1.1 gcc-fullversion() {
481 vapier 1.102 _gcc_fullversion '$1.$2.$3' "$@"
482 vapier 1.1 }
483 vapier 1.74 # @FUNCTION: gcc-version
484     # @RETURN: compiler version (major.minor: [3.4].6)
485 vapier 1.1 gcc-version() {
486 vapier 1.102 _gcc_fullversion '$1.$2' "$@"
487 vapier 1.1 }
488 vapier 1.74 # @FUNCTION: gcc-major-version
489     # @RETURN: major compiler version (major: [3].4.6)
490 vapier 1.1 gcc-major-version() {
491 vapier 1.102 _gcc_fullversion '$1' "$@"
492 vapier 1.1 }
493 vapier 1.74 # @FUNCTION: gcc-minor-version
494     # @RETURN: minor compiler version (minor: 3.[4].6)
495 vapier 1.1 gcc-minor-version() {
496 vapier 1.102 _gcc_fullversion '$2' "$@"
497 vapier 1.1 }
498 vapier 1.74 # @FUNCTION: gcc-micro-version
499     # @RETURN: micro compiler version (micro: 3.4.[6])
500 vapier 1.1 gcc-micro-version() {
501 vapier 1.102 _gcc_fullversion '$3' "$@"
502 vapier 1.1 }
503 vapier 1.74
504 kevquinn 1.68 # Returns the installation directory - internal toolchain
505     # function for use by _gcc-specs-exists (for flag-o-matic).
506     _gcc-install-dir() {
507 vapier 1.76 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
508 kevquinn 1.68 awk '$1=="install:" {print $2}')"
509     }
510     # Returns true if the indicated specs file exists - internal toolchain
511     # function for use by flag-o-matic.
512     _gcc-specs-exists() {
513     [[ -f $(_gcc-install-dir)/$1 ]]
514     }
515 kevquinn 1.41
516 kevquinn 1.68 # Returns requested gcc specs directive unprocessed - for used by
517     # gcc-specs-directive()
518 kevquinn 1.46 # Note; later specs normally overwrite earlier ones; however if a later
519     # spec starts with '+' then it appends.
520     # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
521 kevquinn 1.68 # as "Reading <file>", in order. Strictly speaking, if there's a
522     # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
523     # the same token anything from 'gcc -dumpspecs' is overridden by
524     # the contents of $(gcc_install_dir)/specs so the result is the
525     # same either way.
526     _gcc-specs-directive_raw() {
527 kevquinn 1.57 local cc=$(tc-getCC)
528     local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
529     ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
530 kevquinn 1.46 'BEGIN { pspec=""; spec=""; outside=1 }
531     $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
532 kevquinn 1.41 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
533 kevquinn 1.46 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
534     { spec=spec $0 }
535     END { print spec }'
536     return 0
537 kevquinn 1.41 }
538    
539 kevquinn 1.68 # Return the requested gcc specs directive, with all included
540     # specs expanded.
541     # Note, it does not check for inclusion loops, which cause it
542     # to never finish - but such loops are invalid for gcc and we're
543     # assuming gcc is operational.
544     gcc-specs-directive() {
545     local directive subdname subdirective
546     directive="$(_gcc-specs-directive_raw $1)"
547     while [[ ${directive} == *%\(*\)* ]]; do
548     subdname=${directive/*%\(}
549     subdname=${subdname/\)*}
550     subdirective="$(_gcc-specs-directive_raw ${subdname})"
551     directive="${directive//\%(${subdname})/${subdirective}}"
552     done
553     echo "${directive}"
554     return 0
555     }
556    
557 kevquinn 1.41 # Returns true if gcc sets relro
558     gcc-specs-relro() {
559     local directive
560     directive=$(gcc-specs-directive link_command)
561 gengor 1.84 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
562 kevquinn 1.41 }
563     # Returns true if gcc sets now
564     gcc-specs-now() {
565     local directive
566     directive=$(gcc-specs-directive link_command)
567 gengor 1.84 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
568 kevquinn 1.41 }
569     # Returns true if gcc builds PIEs
570     gcc-specs-pie() {
571     local directive
572     directive=$(gcc-specs-directive cc1)
573 gengor 1.84 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
574 kevquinn 1.41 }
575     # Returns true if gcc builds with the stack protector
576     gcc-specs-ssp() {
577     local directive
578     directive=$(gcc-specs-directive cc1)
579 gengor 1.84 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
580 kevquinn 1.41 }
581 kevquinn 1.46 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
582     gcc-specs-ssp-to-all() {
583     local directive
584     directive=$(gcc-specs-directive cc1)
585 gengor 1.84 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
586 kevquinn 1.46 }
587 gengor 1.80 # Returns true if gcc builds with fno-strict-overflow
588     gcc-specs-nostrict() {
589     local directive
590     directive=$(gcc-specs-directive cc1)
591 gengor 1.84 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
592 gengor 1.80 }
593 vapier 1.60
594    
595 vapier 1.74 # @FUNCTION: gen_usr_ldscript
596 vapier 1.85 # @USAGE: [-a] <list of libs to create linker scripts for>
597 vapier 1.74 # @DESCRIPTION:
598 vapier 1.60 # This function generate linker scripts in /usr/lib for dynamic
599     # libs in /lib. This is to fix linking problems when you have
600     # the .so in /lib, and the .a in /usr/lib. What happens is that
601     # in some cases when linking dynamic, the .a in /usr/lib is used
602     # instead of the .so in /lib due to gcc/libtool tweaking ld's
603 vapier 1.74 # library search path. This causes many builds to fail.
604 vapier 1.60 # See bug #4411 for more info.
605     #
606     # Note that you should in general use the unversioned name of
607 vapier 1.74 # the library (libfoo.so), as ldconfig should usually update it
608     # correctly to point to the latest version of the library present.
609 vapier 1.70 gen_usr_ldscript() {
610 vapier 1.85 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
611 grobian 1.91 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
612    
613     tc-is-static-only && return
614    
615 vapier 1.60 # Just make sure it exists
616     dodir /usr/${libdir}
617    
618 vapier 1.85 if [[ $1 == "-a" ]] ; then
619     auto=true
620     shift
621     dodir /${libdir}
622     fi
623    
624 vapier 1.60 # OUTPUT_FORMAT gives hints to the linker as to what binary format
625     # is referenced ... makes multilib saner
626     output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
627     [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
628    
629     for lib in "$@" ; do
630 grobian 1.91 local tlib
631     if ${auto} ; then
632     lib="lib${lib}${suffix}"
633 grobian 1.90 else
634 grobian 1.91 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
635     # This especially is for AIX where $(get_libname) can return ".a",
636     # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
637     [[ -r ${ED}/${libdir}/${lib} ]] || continue
638     #TODO: better die here?
639     fi
640    
641     case ${CTARGET:-${CHOST}} in
642     *-darwin*)
643 vapier 1.85 if ${auto} ; then
644 grobian 1.91 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
645     else
646     tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
647     fi
648     [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
649     tlib=${tlib##*/}
650    
651     if ${auto} ; then
652     mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
653 grobian 1.92 # some install_names are funky: they encode a version
654     if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
655     mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
656     fi
657 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
658     fi
659    
660     # Mach-O files have an id, which is like a soname, it tells how
661     # another object linking against this lib should reference it.
662     # Since we moved the lib from usr/lib into lib this reference is
663     # wrong. Hence, we update it here. We don't configure with
664     # libdir=/lib because that messes up libtool files.
665     # Make sure we don't lose the specific version, so just modify the
666     # existing install_name
667 grobian 1.94 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
668 grobian 1.95 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
669 grobian 1.94 local nowrite=yes
670     fi
671 grobian 1.91 install_name_tool \
672     -id "${EPREFIX}"/${libdir}/${tlib} \
673 grobian 1.94 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
674 grobian 1.95 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
675 grobian 1.91 # Now as we don't use GNU binutils and our linker doesn't
676     # understand linker scripts, just create a symlink.
677     pushd "${ED}/usr/${libdir}" > /dev/null
678     ln -snf "../../${libdir}/${tlib}" "${lib}"
679     popd > /dev/null
680     ;;
681 grobian 1.93 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
682 grobian 1.91 if ${auto} ; then
683     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
684     # no way to retrieve soname on these platforms (?)
685     tlib=$(readlink "${ED}"/${libdir}/${lib})
686     tlib=${tlib##*/}
687     if [[ -z ${tlib} ]] ; then
688     # ok, apparently was not a symlink, don't remove it and
689     # just link to it
690     tlib=${lib}
691     else
692     rm -f "${ED}"/${libdir}/${lib}
693     fi
694     else
695     tlib=${lib}
696     fi
697    
698     # we don't have GNU binutils on these platforms, so we symlink
699     # instead, which seems to work fine. Keep it relative, otherwise
700     # we break some QA checks in Portage
701     # on interix, the linker scripts would work fine in _most_
702     # situations. if a library links to such a linker script the
703     # absolute path to the correct library is inserted into the binary,
704     # which is wrong, since anybody linking _without_ libtool will miss
705     # some dependencies, since the stupid linker cannot find libraries
706     # hardcoded with absolute paths (as opposed to the loader, which
707     # seems to be able to do this).
708     # this has been seen while building shared-mime-info which needs
709     # libxml2, but links without libtool (and does not add libz to the
710     # command line by itself).
711     pushd "${ED}/usr/${libdir}" > /dev/null
712     ln -snf "../../${libdir}/${tlib}" "${lib}"
713     popd > /dev/null
714     ;;
715 grobian 1.93 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
716     if ${auto} ; then
717     tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
718     [[ -z ${tlib} ]] && tlib=${lib}
719     tlib=${tlib##*/} # 'internal name' can have a path component
720     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
721     # some SONAMEs are funky: they encode a version before the .so
722     if [[ ${tlib} != ${lib}* ]] ; then
723     mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
724     fi
725     [[ ${tlib} != ${lib} ]] &&
726     rm -f "${ED}"/${libdir}/${lib}
727     else
728     tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
729     [[ -z ${tlib} ]] && tlib=${lib}
730     tlib=${tlib##*/} # 'internal name' can have a path component
731     fi
732     pushd "${ED}"/usr/${libdir} >/dev/null
733     ln -snf "../../${libdir}/${tlib}" "${lib}"
734     # need the internal name in usr/lib too, to be available at runtime
735     # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
736     [[ ${tlib} != ${lib} ]] &&
737     ln -snf "../../${libdir}/${tlib}" "${tlib}"
738     popd >/dev/null
739     ;;
740 grobian 1.91 *)
741     if ${auto} ; then
742     tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
743     [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
744     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
745 vapier 1.88 # some SONAMEs are funky: they encode a version before the .so
746     if [[ ${tlib} != ${lib}* ]] ; then
747 grobian 1.91 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
748 vapier 1.88 fi
749 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
750 vapier 1.85 else
751     tlib=${lib}
752     fi
753 grobian 1.91 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
754 grobian 1.61 /* GNU ld script
755 vapier 1.87 Since Gentoo has critical dynamic libraries in /lib, and the static versions
756     in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
757     run into linking problems. This "fake" dynamic lib is a linker script that
758     redirects the linker to the real lib. And yes, this works in the cross-
759     compiling scenario as the sysroot-ed linker will prepend the real path.
760 grobian 1.61
761     See bug http://bugs.gentoo.org/4411 for more info.
762     */
763     ${output_format}
764 grobian 1.91 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
765 grobian 1.61 END_LDSCRIPT
766 grobian 1.91 ;;
767     esac
768     fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
769 vapier 1.60 done
770     }
771 vapier 1.109
772     fi

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