/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.133 - (hide annotations) (download)
Tue Mar 10 17:56:30 2015 UTC (4 years, 1 month ago) by vapier
Branch: MAIN
Changes since 1.132: +3 -2 lines
econf_build: set --host=${CBUILD} otherwise we get the cross-compile target as the host

1 blueness 1.130 # Copyright 1999-2014 Gentoo Foundation
2 vapier 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.133 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.132 2015/02/27 06:08:39 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 "$@"; }
87 vapier 1.74 # @FUNCTION: tc-getF77
88     # @USAGE: [toolchain prefix]
89     # @RETURN: name of the Fortran 77 compiler
90 dberkholz 1.101 tc-getF77() { tc-getPROG F77 gfortran "$@"; }
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 blueness 1.128 [[ ${CBUILD:-${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 blueness 1.128 [[ ${host} == *-mint* ]]
214 grobian 1.91 }
215    
216 vapier 1.112 # @FUNCTION: tc-export_build_env
217     # @USAGE: [compiler variables]
218     # @DESCRIPTION:
219     # Export common build related compiler settings.
220     tc-export_build_env() {
221     tc-export "$@"
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 vapier 1.122
228     # Some packages use XXX_FOR_BUILD.
229     local v
230     for v in BUILD_{C,CXX,CPP,LD}FLAGS ; do
231     export ${v#BUILD_}_FOR_BUILD="${!v}"
232     done
233 vapier 1.112 }
234    
235 vapier 1.108 # @FUNCTION: tc-env_build
236     # @USAGE: <command> [command args]
237     # @INTERNAL
238     # @DESCRIPTION:
239     # Setup the compile environment to the build tools and then execute the
240     # specified command. We use tc-getBUILD_XX here so that we work with
241     # all of the semi-[non-]standard env vars like $BUILD_CC which often
242     # the target build system does not check.
243     tc-env_build() {
244 vapier 1.112 tc-export_build_env
245     CFLAGS=${BUILD_CFLAGS} \
246     CXXFLAGS=${BUILD_CXXFLAGS} \
247 vapier 1.108 CPPFLAGS=${BUILD_CPPFLAGS} \
248     LDFLAGS=${BUILD_LDFLAGS} \
249     AR=$(tc-getBUILD_AR) \
250     AS=$(tc-getBUILD_AS) \
251     CC=$(tc-getBUILD_CC) \
252     CPP=$(tc-getBUILD_CPP) \
253     CXX=$(tc-getBUILD_CXX) \
254     LD=$(tc-getBUILD_LD) \
255     NM=$(tc-getBUILD_NM) \
256     PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
257     RANLIB=$(tc-getBUILD_RANLIB) \
258     "$@"
259     }
260    
261     # @FUNCTION: econf_build
262     # @USAGE: [econf flags]
263     # @DESCRIPTION:
264     # Sometimes we need to locally build up some tools to run on CBUILD because
265     # the package has helper utils which are compiled+executed when compiling.
266     # This won't work when cross-compiling as the CHOST is set to a target which
267     # we cannot natively execute.
268     #
269     # For example, the python package will build up a local python binary using
270     # a portable build system (configure+make), but then use that binary to run
271     # local python scripts to build up other components of the overall python.
272     # We cannot rely on the python binary in $PATH as that often times will be
273     # a different version, or not even installed in the first place. Instead,
274     # we compile the code in a different directory to run on CBUILD, and then
275     # use that binary when compiling the main package to run on CHOST.
276     #
277     # For example, with newer EAPIs, you'd do something like:
278     # @CODE
279     # src_configure() {
280     # ECONF_SOURCE=${S}
281     # if tc-is-cross-compiler ; then
282     # mkdir "${WORKDIR}"/${CBUILD}
283     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
284     # econf_build --disable-some-unused-stuff
285     # popd >/dev/null
286     # fi
287     # ... normal build paths ...
288     # }
289     # src_compile() {
290     # if tc-is-cross-compiler ; then
291     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
292     # emake one-or-two-build-tools
293     # ln/mv build-tools to normal build paths in ${S}/
294     # popd >/dev/null
295     # fi
296     # ... normal build paths ...
297     # }
298     # @CODE
299     econf_build() {
300 vapier 1.133 local CBUILD=${CBUILD:-${CHOST}}
301     tc-env_build econf --build=${CBUILD} --host=${CBUILD} "$@"
302 vapier 1.108 }
303    
304 vapier 1.100 # @FUNCTION: tc-has-openmp
305     # @USAGE: [toolchain prefix]
306     # @DESCRIPTION:
307     # See if the toolchain supports OpenMP.
308     tc-has-openmp() {
309     local base="${T}/test-tc-openmp"
310     cat <<-EOF > "${base}.c"
311     #include <omp.h>
312     int main() {
313     int nthreads, tid, ret = 0;
314     #pragma omp parallel private(nthreads, tid)
315     {
316     tid = omp_get_thread_num();
317     nthreads = omp_get_num_threads(); ret += tid + nthreads;
318     }
319     return ret;
320     }
321     EOF
322     $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
323     local ret=$?
324     rm -f "${base}"*
325     return ${ret}
326     }
327    
328 vapier 1.97 # @FUNCTION: tc-has-tls
329     # @USAGE: [-s|-c|-l] [toolchain prefix]
330     # @DESCRIPTION:
331     # See if the toolchain supports thread local storage (TLS). Use -s to test the
332     # compiler, -c to also test the assembler, and -l to also test the C library
333     # (the default).
334     tc-has-tls() {
335     local base="${T}/test-tc-tls"
336     cat <<-EOF > "${base}.c"
337     int foo(int *i) {
338     static __thread int j = 0;
339     return *i ? j : *i;
340     }
341     EOF
342     local flags
343     case $1 in
344     -s) flags="-S";;
345     -c) flags="-c";;
346     -l) ;;
347     -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
348     esac
349     : ${flags:=-fPIC -shared -Wl,-z,defs}
350     [[ $1 == -* ]] && shift
351     $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
352     local ret=$?
353     rm -f "${base}"*
354     return ${ret}
355     }
356    
357 grobian 1.91
358 swegener 1.40 # Parse information from CBUILD/CHOST/CTARGET rather than
359 vapier 1.20 # use external variables from the profile.
360     tc-ninja_magic_to_arch() {
361 vapier 1.21 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
362 vapier 1.19
363     local type=$1
364     local host=$2
365 eradicator 1.25 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
366 vapier 1.19
367 axs 1.118 local KV=${KV:-${KV_FULL}}
368 axs 1.119 [[ ${type} == "kern" ]] && [[ -z ${KV} ]] && \
369     ewarn "QA: Kernel version could not be determined, please inherit kernel-2 or linux-info"
370 axs 1.118
371 vapier 1.19 case ${host} in
372 vapier 1.125 aarch64*) echo arm64;;
373 vapier 1.19 alpha*) echo alpha;;
374     arm*) echo arm;;
375 vapier 1.72 avr*) ninj avr32 avr;;
376 vapier 1.53 bfin*) ninj blackfin bfin;;
377 vapier 1.132 c6x*) echo c6x;;
378 vapier 1.47 cris*) echo cris;;
379 vapier 1.132 frv*) echo frv;;
380     hexagon*) echo hexagon;;
381 vapier 1.19 hppa*) ninj parisc hppa;;
382 vapier 1.75 i?86*)
383     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
384     # trees have been unified into 'x86'.
385 aballier 1.77 # FreeBSD still uses i386
386     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
387 vapier 1.75 echo i386
388     else
389     echo x86
390     fi
391     ;;
392 vapier 1.19 ia64*) echo ia64;;
393 vapier 1.23 m68*) echo m68k;;
394 vapier 1.132 metag*) echo metag;;
395     microblaze*) echo microblaze;;
396 vapier 1.19 mips*) echo mips;;
397 vapier 1.52 nios2*) echo nios2;;
398     nios*) echo nios;;
399 vapier 1.132 or32*) echo openrisc;;
400 vapier 1.49 powerpc*)
401 vapier 1.103 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
402     # have been unified into simply 'powerpc', but until 2.6.16,
403     # ppc32 is still using ARCH="ppc" as default
404     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
405     echo powerpc
406     elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
407     if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
408     echo powerpc
409     else
410     echo ppc
411     fi
412     elif [[ ${host} == powerpc64* ]] ; then
413     echo ppc64
414     elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
415     ninj ppc64 ppc
416     else
417     echo ppc
418     fi
419     ;;
420 vapier 1.131 riscv*) echo riscv;;
421 vapier 1.47 s390*) echo s390;;
422 vapier 1.132 score*) echo score;;
423 vapier 1.47 sh64*) ninj sh64 sh;;
424     sh*) echo sh;;
425 vapier 1.19 sparc64*) ninj sparc64 sparc;;
426 vapier 1.28 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
427     && ninj sparc64 sparc \
428     || echo sparc
429     ;;
430 vapier 1.121 tile*) echo tile;;
431 vapier 1.47 vax*) echo vax;;
432 aballier 1.104 x86_64*freebsd*) echo amd64;;
433 vapier 1.75 x86_64*)
434     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
435     # trees have been unified into 'x86'.
436     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
437     echo x86
438     else
439     ninj x86_64 amd64
440     fi
441     ;;
442 vapier 1.121 xtensa*) echo xtensa;;
443 vapier 1.73
444     # since our usage of tc-arch is largely concerned with
445     # normalizing inputs for testing ${CTARGET}, let's filter
446     # other cross targets (mingw and such) into the unknown.
447     *) echo unknown;;
448 vapier 1.19 esac
449     }
450 vapier 1.74 # @FUNCTION: tc-arch-kernel
451     # @USAGE: [toolchain prefix]
452     # @RETURN: name of the kernel arch according to the compiler target
453 vapier 1.20 tc-arch-kernel() {
454 vapier 1.74 tc-ninja_magic_to_arch kern "$@"
455 vapier 1.19 }
456 vapier 1.74 # @FUNCTION: tc-arch
457     # @USAGE: [toolchain prefix]
458     # @RETURN: name of the portage arch according to the compiler target
459 vapier 1.20 tc-arch() {
460 vapier 1.74 tc-ninja_magic_to_arch portage "$@"
461 vapier 1.19 }
462 vapier 1.74
463 robbat2 1.71 tc-endian() {
464     local host=$1
465     [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
466     host=${host%%-*}
467    
468     case ${host} in
469 vapier 1.116 aarch64*be) echo big;;
470     aarch64) echo little;;
471 robbat2 1.71 alpha*) echo big;;
472     arm*b*) echo big;;
473     arm*) echo little;;
474     cris*) echo little;;
475     hppa*) echo big;;
476     i?86*) echo little;;
477     ia64*) echo little;;
478     m68*) echo big;;
479     mips*l*) echo little;;
480     mips*) echo big;;
481 vapier 1.126 powerpc*le) echo little;;
482 robbat2 1.71 powerpc*) echo big;;
483     s390*) echo big;;
484     sh*b*) echo big;;
485     sh*) echo little;;
486     sparc*) echo big;;
487     x86_64*) echo little;;
488     *) echo wtf;;
489     esac
490     }
491 vapier 1.19
492 vapier 1.102 # Internal func. The first argument is the version info to expand.
493     # Query the preprocessor to improve compatibility across different
494     # compilers rather than maintaining a --version flag matrix. #335943
495     _gcc_fullversion() {
496     local ver="$1"; shift
497     set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
498     eval echo "$ver"
499     }
500    
501 vapier 1.74 # @FUNCTION: gcc-fullversion
502     # @RETURN: compiler version (major.minor.micro: [3.4.6])
503 vapier 1.1 gcc-fullversion() {
504 vapier 1.102 _gcc_fullversion '$1.$2.$3' "$@"
505 vapier 1.1 }
506 vapier 1.74 # @FUNCTION: gcc-version
507     # @RETURN: compiler version (major.minor: [3.4].6)
508 vapier 1.1 gcc-version() {
509 vapier 1.102 _gcc_fullversion '$1.$2' "$@"
510 vapier 1.1 }
511 vapier 1.74 # @FUNCTION: gcc-major-version
512     # @RETURN: major compiler version (major: [3].4.6)
513 vapier 1.1 gcc-major-version() {
514 vapier 1.102 _gcc_fullversion '$1' "$@"
515 vapier 1.1 }
516 vapier 1.74 # @FUNCTION: gcc-minor-version
517     # @RETURN: minor compiler version (minor: 3.[4].6)
518 vapier 1.1 gcc-minor-version() {
519 vapier 1.102 _gcc_fullversion '$2' "$@"
520 vapier 1.1 }
521 vapier 1.74 # @FUNCTION: gcc-micro-version
522     # @RETURN: micro compiler version (micro: 3.4.[6])
523 vapier 1.1 gcc-micro-version() {
524 vapier 1.102 _gcc_fullversion '$3' "$@"
525 vapier 1.1 }
526 vapier 1.74
527 kevquinn 1.68 # Returns the installation directory - internal toolchain
528     # function for use by _gcc-specs-exists (for flag-o-matic).
529     _gcc-install-dir() {
530 vapier 1.76 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
531 kevquinn 1.68 awk '$1=="install:" {print $2}')"
532     }
533     # Returns true if the indicated specs file exists - internal toolchain
534     # function for use by flag-o-matic.
535     _gcc-specs-exists() {
536     [[ -f $(_gcc-install-dir)/$1 ]]
537     }
538 kevquinn 1.41
539 kevquinn 1.68 # Returns requested gcc specs directive unprocessed - for used by
540     # gcc-specs-directive()
541 kevquinn 1.46 # Note; later specs normally overwrite earlier ones; however if a later
542     # spec starts with '+' then it appends.
543     # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
544 kevquinn 1.68 # as "Reading <file>", in order. Strictly speaking, if there's a
545     # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
546     # the same token anything from 'gcc -dumpspecs' is overridden by
547     # the contents of $(gcc_install_dir)/specs so the result is the
548     # same either way.
549     _gcc-specs-directive_raw() {
550 kevquinn 1.57 local cc=$(tc-getCC)
551     local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
552     ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
553 kevquinn 1.46 'BEGIN { pspec=""; spec=""; outside=1 }
554     $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
555 kevquinn 1.41 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
556 kevquinn 1.46 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
557     { spec=spec $0 }
558     END { print spec }'
559     return 0
560 kevquinn 1.41 }
561    
562 kevquinn 1.68 # Return the requested gcc specs directive, with all included
563     # specs expanded.
564     # Note, it does not check for inclusion loops, which cause it
565     # to never finish - but such loops are invalid for gcc and we're
566     # assuming gcc is operational.
567     gcc-specs-directive() {
568     local directive subdname subdirective
569     directive="$(_gcc-specs-directive_raw $1)"
570     while [[ ${directive} == *%\(*\)* ]]; do
571     subdname=${directive/*%\(}
572     subdname=${subdname/\)*}
573     subdirective="$(_gcc-specs-directive_raw ${subdname})"
574     directive="${directive//\%(${subdname})/${subdirective}}"
575     done
576     echo "${directive}"
577     return 0
578     }
579    
580 kevquinn 1.41 # Returns true if gcc sets relro
581     gcc-specs-relro() {
582     local directive
583     directive=$(gcc-specs-directive link_command)
584 blueness 1.128 [[ "${directive/\{!norelro:}" != "${directive}" ]]
585 kevquinn 1.41 }
586     # Returns true if gcc sets now
587     gcc-specs-now() {
588     local directive
589     directive=$(gcc-specs-directive link_command)
590 blueness 1.128 [[ "${directive/\{!nonow:}" != "${directive}" ]]
591 kevquinn 1.41 }
592     # Returns true if gcc builds PIEs
593     gcc-specs-pie() {
594     local directive
595     directive=$(gcc-specs-directive cc1)
596 blueness 1.128 [[ "${directive/\{!nopie:}" != "${directive}" ]]
597 kevquinn 1.41 }
598     # Returns true if gcc builds with the stack protector
599     gcc-specs-ssp() {
600     local directive
601     directive=$(gcc-specs-directive cc1)
602 blueness 1.128 [[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]]
603 kevquinn 1.41 }
604 kevquinn 1.46 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
605     gcc-specs-ssp-to-all() {
606     local directive
607     directive=$(gcc-specs-directive cc1)
608 blueness 1.128 [[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]]
609 kevquinn 1.46 }
610 gengor 1.80 # Returns true if gcc builds with fno-strict-overflow
611     gcc-specs-nostrict() {
612     local directive
613     directive=$(gcc-specs-directive cc1)
614 blueness 1.128 [[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]
615 gengor 1.80 }
616 blueness 1.129 # Returns true if gcc builds with fstack-check
617     gcc-specs-stack-check() {
618     local directive
619     directive=$(gcc-specs-directive cc1)
620     [[ "${directive/\{!fno-stack-check:}" != "${directive}" ]]
621     }
622 vapier 1.60
623    
624 vapier 1.74 # @FUNCTION: gen_usr_ldscript
625 vapier 1.85 # @USAGE: [-a] <list of libs to create linker scripts for>
626 vapier 1.74 # @DESCRIPTION:
627 vapier 1.60 # This function generate linker scripts in /usr/lib for dynamic
628     # libs in /lib. This is to fix linking problems when you have
629     # the .so in /lib, and the .a in /usr/lib. What happens is that
630     # in some cases when linking dynamic, the .a in /usr/lib is used
631     # instead of the .so in /lib due to gcc/libtool tweaking ld's
632 vapier 1.74 # library search path. This causes many builds to fail.
633 vapier 1.60 # See bug #4411 for more info.
634     #
635     # Note that you should in general use the unversioned name of
636 vapier 1.74 # the library (libfoo.so), as ldconfig should usually update it
637     # correctly to point to the latest version of the library present.
638 vapier 1.70 gen_usr_ldscript() {
639 vapier 1.85 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
640 grobian 1.91 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
641    
642     tc-is-static-only && return
643    
644 vapier 1.113 # Eventually we'd like to get rid of this func completely #417451
645     case ${CTARGET:-${CHOST}} in
646     *-darwin*) ;;
647 vapier 1.115 *linux*|*-freebsd*|*-openbsd*|*-netbsd*)
648 vapier 1.114 use prefix && return 0 ;;
649 vapier 1.113 *) return 0 ;;
650     esac
651    
652 vapier 1.60 # Just make sure it exists
653     dodir /usr/${libdir}
654    
655 vapier 1.85 if [[ $1 == "-a" ]] ; then
656     auto=true
657     shift
658     dodir /${libdir}
659     fi
660    
661 vapier 1.60 # OUTPUT_FORMAT gives hints to the linker as to what binary format
662     # is referenced ... makes multilib saner
663 vapier 1.123 local flags=( ${CFLAGS} ${LDFLAGS} -Wl,--verbose )
664     if $(tc-getLD) --version | grep -q 'GNU gold' ; then
665     # If they're using gold, manually invoke the old bfd. #487696
666     local d="${T}/bfd-linker"
667     mkdir -p "${d}"
668     ln -sf $(which ${CHOST}-ld.bfd) "${d}"/ld
669     flags+=( -B"${d}" )
670     fi
671     output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
672 vapier 1.60 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
673    
674     for lib in "$@" ; do
675 grobian 1.91 local tlib
676     if ${auto} ; then
677     lib="lib${lib}${suffix}"
678 grobian 1.90 else
679 grobian 1.91 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
680     # This especially is for AIX where $(get_libname) can return ".a",
681     # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
682     [[ -r ${ED}/${libdir}/${lib} ]] || continue
683     #TODO: better die here?
684     fi
685    
686     case ${CTARGET:-${CHOST}} in
687     *-darwin*)
688 vapier 1.85 if ${auto} ; then
689 grobian 1.91 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
690     else
691     tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
692     fi
693     [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
694     tlib=${tlib##*/}
695    
696     if ${auto} ; then
697     mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
698 grobian 1.92 # some install_names are funky: they encode a version
699     if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
700     mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
701     fi
702 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
703     fi
704    
705     # Mach-O files have an id, which is like a soname, it tells how
706     # another object linking against this lib should reference it.
707     # Since we moved the lib from usr/lib into lib this reference is
708     # wrong. Hence, we update it here. We don't configure with
709     # libdir=/lib because that messes up libtool files.
710     # Make sure we don't lose the specific version, so just modify the
711     # existing install_name
712 grobian 1.94 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
713 grobian 1.95 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
714 grobian 1.94 local nowrite=yes
715     fi
716 grobian 1.91 install_name_tool \
717     -id "${EPREFIX}"/${libdir}/${tlib} \
718 grobian 1.94 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
719 grobian 1.95 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
720 grobian 1.91 # Now as we don't use GNU binutils and our linker doesn't
721     # understand linker scripts, just create a symlink.
722     pushd "${ED}/usr/${libdir}" > /dev/null
723     ln -snf "../../${libdir}/${tlib}" "${lib}"
724     popd > /dev/null
725     ;;
726 vapier 1.114 *)
727 grobian 1.91 if ${auto} ; then
728     tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
729     [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
730     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
731 vapier 1.88 # some SONAMEs are funky: they encode a version before the .so
732     if [[ ${tlib} != ${lib}* ]] ; then
733 grobian 1.91 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
734 vapier 1.88 fi
735 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
736 vapier 1.85 else
737     tlib=${lib}
738     fi
739 grobian 1.91 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
740 grobian 1.61 /* GNU ld script
741 vapier 1.87 Since Gentoo has critical dynamic libraries in /lib, and the static versions
742     in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
743     run into linking problems. This "fake" dynamic lib is a linker script that
744     redirects the linker to the real lib. And yes, this works in the cross-
745     compiling scenario as the sysroot-ed linker will prepend the real path.
746 grobian 1.61
747     See bug http://bugs.gentoo.org/4411 for more info.
748     */
749     ${output_format}
750 grobian 1.91 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
751 grobian 1.61 END_LDSCRIPT
752 grobian 1.91 ;;
753     esac
754     fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
755 vapier 1.60 done
756     }
757 vapier 1.109
758     fi

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