/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.76 - (hide annotations) (download)
Wed Apr 16 14:16:45 2008 UTC (6 years, 5 months ago) by vapier
Branch: MAIN
Changes since 1.75: +2 -2 lines
set locale to C when trying to parse the output of gcc as reported by Xake #217852

1 vapier 1.67 # Copyright 1999-2007 Gentoo Foundation
2 vapier 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.76 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.75 2008/01/02 01:01:03 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 1.69 ___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
17     [[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
18 eradicator 1.34
19 vapier 1.1 DESCRIPTION="Based on the ${ECLASS} eclass"
20    
21     tc-getPROG() {
22 vapier 1.33 local var=$1
23     local prog=$2
24 vapier 1.1
25 vapier 1.17 if [[ -n ${!var} ]] ; then
26 vapier 1.1 echo "${!var}"
27     return 0
28     fi
29    
30 eradicator 1.35 local search=
31     [[ -n $3 ]] && search=$(type -p "$3-${prog}")
32     [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
33     [[ -n ${search} ]] && prog=${search##*/}
34 vapier 1.1
35 vapier 1.17 export ${var}=${prog}
36 vapier 1.1 echo "${!var}"
37     }
38    
39 vapier 1.74 # @FUNCTION: tc-getAR
40     # @USAGE: [toolchain prefix]
41     # @RETURN: name of the archiver
42 vapier 1.33 tc-getAR() { tc-getPROG AR ar "$@"; }
43 vapier 1.74 # @FUNCTION: tc-getAS
44     # @USAGE: [toolchain prefix]
45     # @RETURN: name of the assembler
46 vapier 1.33 tc-getAS() { tc-getPROG AS as "$@"; }
47 vapier 1.74 # @FUNCTION: tc-getCC
48     # @USAGE: [toolchain prefix]
49     # @RETURN: name of the C compiler
50 vapier 1.33 tc-getCC() { tc-getPROG CC gcc "$@"; }
51 vapier 1.74 # @FUNCTION: tc-getCPP
52     # @USAGE: [toolchain prefix]
53     # @RETURN: name of the C preprocessor
54 robbat2 1.58 tc-getCPP() { tc-getPROG CPP cpp "$@"; }
55 vapier 1.74 # @FUNCTION: tc-getCXX
56     # @USAGE: [toolchain prefix]
57     # @RETURN: name of the C++ compiler
58 vapier 1.33 tc-getCXX() { tc-getPROG CXX g++ "$@"; }
59 vapier 1.74 # @FUNCTION: tc-getLD
60     # @USAGE: [toolchain prefix]
61     # @RETURN: name of the linker
62 vapier 1.33 tc-getLD() { tc-getPROG LD ld "$@"; }
63 vapier 1.74 # @FUNCTION: tc-getSTRIP
64     # @USAGE: [toolchain prefix]
65     # @RETURN: name of the strip program
66 kanaka 1.59 tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
67 vapier 1.74 # @FUNCTION: tc-getNM
68     # @USAGE: [toolchain prefix]
69     # @RETURN: name of the symbol/object thingy
70 vapier 1.33 tc-getNM() { tc-getPROG NM nm "$@"; }
71 vapier 1.74 # @FUNCTION: tc-getRANLIB
72     # @USAGE: [toolchain prefix]
73     # @RETURN: name of the archiver indexer
74 vapier 1.33 tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
75 vapier 1.74 # @FUNCTION: tc-getF77
76     # @USAGE: [toolchain prefix]
77     # @RETURN: name of the Fortran 77 compiler
78 kanaka 1.59 tc-getF77() { tc-getPROG F77 f77 "$@"; }
79 vapier 1.74 # @FUNCTION: tc-getF90
80     # @USAGE: [toolchain prefix]
81     # @RETURN: name of the Fortran 90 compiler
82 kanaka 1.59 tc-getF90() { tc-getPROG F90 gfortran "$@"; }
83 vapier 1.74 # @FUNCTION: tc-getFORTRAN
84     # @USAGE: [toolchain prefix]
85     # @RETURN: name of the Fortran compiler
86 kanaka 1.59 tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
87 vapier 1.74 # @FUNCTION: tc-getGCJ
88     # @USAGE: [toolchain prefix]
89     # @RETURN: name of the java compiler
90 vapier 1.33 tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
91 vapier 1.1
92 vapier 1.74 # @FUNCTION: tc-getBUILD_CC
93     # @USAGE: [toolchain prefix]
94     # @RETURN: name of the C compiler for building binaries to run on the build machine
95 vapier 1.4 tc-getBUILD_CC() {
96 vapier 1.43 local v
97     for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
98     if [[ -n ${!v} ]] ; then
99     export BUILD_CC=${!v}
100     echo "${!v}"
101     return 0
102     fi
103     done
104 vapier 1.4
105 vapier 1.9 local search=
106 vapier 1.17 if [[ -n ${CBUILD} ]] ; then
107 vapier 1.21 search=$(type -p ${CBUILD}-gcc)
108 vapier 1.17 search=${search##*/}
109 vapier 1.9 fi
110 vapier 1.45 search=${search:-gcc}
111 vapier 1.11
112 vapier 1.17 export BUILD_CC=${search}
113 vapier 1.11 echo "${search}"
114 vapier 1.4 }
115 vapier 1.1
116 vapier 1.74 # @FUNCTION: tc-export
117     # @USAGE: <list of toolchain variables>
118     # @DESCRIPTION:
119     # Quick way to export a bunch of compiler vars at once.
120 vapier 1.10 tc-export() {
121     local var
122     for var in "$@" ; do
123 vapier 1.36 eval tc-get${var} > /dev/null
124 vapier 1.10 done
125     }
126    
127 vapier 1.74 # @FUNCTION: tc-is-cross-compiler
128     # @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
129 vapier 1.12 tc-is-cross-compiler() {
130 vapier 1.43 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
131 vapier 1.12 }
132    
133 vapier 1.74 # @FUNCTION: tc-is-softfloat
134     # @DESCRIPTION:
135 vapier 1.65 # See if this toolchain is a softfloat based one.
136 vapier 1.74 # @CODE
137 vapier 1.65 # The possible return values:
138     # - only: the target is always softfloat (never had fpu)
139     # - yes: the target should support softfloat
140     # - no: the target should support hardfloat
141 vapier 1.74 # @CODE
142 vapier 1.65 # This allows us to react differently where packages accept
143     # softfloat flags in the case where support is optional, but
144     # rejects softfloat flags where the target always lacks an fpu.
145     tc-is-softfloat() {
146     case ${CTARGET} in
147 vapier 1.66 bfin*|h8300*)
148 vapier 1.65 echo "only" ;;
149     *)
150     [[ ${CTARGET//_/-} == *-softfloat-* ]] \
151     && echo "yes" \
152     || echo "no"
153     ;;
154     esac
155     }
156 vapier 1.1
157 swegener 1.40 # Parse information from CBUILD/CHOST/CTARGET rather than
158 vapier 1.20 # use external variables from the profile.
159     tc-ninja_magic_to_arch() {
160 vapier 1.21 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
161 vapier 1.19
162     local type=$1
163     local host=$2
164 eradicator 1.25 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
165 vapier 1.19
166     case ${host} in
167     alpha*) echo alpha;;
168     arm*) echo arm;;
169 vapier 1.72 avr*) ninj avr32 avr;;
170 vapier 1.53 bfin*) ninj blackfin bfin;;
171 vapier 1.47 cris*) echo cris;;
172 vapier 1.19 hppa*) ninj parisc hppa;;
173 vapier 1.75 i?86*)
174     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
175     # trees have been unified into 'x86'.
176     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) ]] ; then
177     echo i386
178     else
179     echo x86
180     fi
181     ;;
182 vapier 1.19 ia64*) echo ia64;;
183 vapier 1.23 m68*) echo m68k;;
184 vapier 1.19 mips*) echo mips;;
185 vapier 1.52 nios2*) echo nios2;;
186     nios*) echo nios;;
187 vapier 1.49 powerpc*)
188     # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
189 josejx 1.54 # have been unified into simply 'powerpc', but until 2.6.16,
190     # ppc32 is still using ARCH="ppc" as default
191     if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
192 vapier 1.49 echo powerpc
193 josejx 1.54 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
194 dostrow 1.55 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
195 josejx 1.54 echo powerpc
196     else
197     echo ppc
198 swegener 1.56 fi
199 vapier 1.49 elif [[ ${host} == powerpc64* ]] ; then
200     echo ppc64
201 dostrow 1.51 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
202     ninj ppc64 ppc
203 vapier 1.49 else
204     echo ppc
205     fi
206 dostrow 1.37 ;;
207 vapier 1.47 s390*) echo s390;;
208     sh64*) ninj sh64 sh;;
209     sh*) echo sh;;
210 vapier 1.19 sparc64*) ninj sparc64 sparc;;
211 vapier 1.28 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
212     && ninj sparc64 sparc \
213     || echo sparc
214     ;;
215 vapier 1.47 vax*) echo vax;;
216 vapier 1.75 x86_64*)
217     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
218     # trees have been unified into 'x86'.
219     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
220     echo x86
221     else
222     ninj x86_64 amd64
223     fi
224     ;;
225 vapier 1.73
226     # since our usage of tc-arch is largely concerned with
227     # normalizing inputs for testing ${CTARGET}, let's filter
228     # other cross targets (mingw and such) into the unknown.
229     *) echo unknown;;
230 vapier 1.19 esac
231     }
232 vapier 1.74 # @FUNCTION: tc-arch-kernel
233     # @USAGE: [toolchain prefix]
234     # @RETURN: name of the kernel arch according to the compiler target
235 vapier 1.20 tc-arch-kernel() {
236 vapier 1.74 tc-ninja_magic_to_arch kern "$@"
237 vapier 1.19 }
238 vapier 1.74 # @FUNCTION: tc-arch
239     # @USAGE: [toolchain prefix]
240     # @RETURN: name of the portage arch according to the compiler target
241 vapier 1.20 tc-arch() {
242 vapier 1.74 tc-ninja_magic_to_arch portage "$@"
243 vapier 1.19 }
244 vapier 1.74
245 robbat2 1.71 tc-endian() {
246     local host=$1
247     [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
248     host=${host%%-*}
249    
250     case ${host} in
251     alpha*) echo big;;
252     arm*b*) echo big;;
253     arm*) echo little;;
254     cris*) echo little;;
255     hppa*) echo big;;
256     i?86*) echo little;;
257     ia64*) echo little;;
258     m68*) echo big;;
259     mips*l*) echo little;;
260     mips*) echo big;;
261     powerpc*) echo big;;
262     s390*) echo big;;
263     sh*b*) echo big;;
264     sh*) echo little;;
265     sparc*) echo big;;
266     x86_64*) echo little;;
267     *) echo wtf;;
268     esac
269     }
270 vapier 1.19
271 vapier 1.74 # @FUNCTION: gcc-fullversion
272     # @RETURN: compiler version (major.minor.micro: [3.4.6])
273 vapier 1.1 gcc-fullversion() {
274 vapier 1.63 $(tc-getCC "$@") -dumpversion
275 vapier 1.1 }
276 vapier 1.74 # @FUNCTION: gcc-version
277     # @RETURN: compiler version (major.minor: [3.4].6)
278 vapier 1.1 gcc-version() {
279 vapier 1.63 gcc-fullversion "$@" | cut -f1,2 -d.
280 vapier 1.1 }
281 vapier 1.74 # @FUNCTION: gcc-major-version
282     # @RETURN: major compiler version (major: [3].4.6)
283 vapier 1.1 gcc-major-version() {
284 vapier 1.63 gcc-version "$@" | cut -f1 -d.
285 vapier 1.1 }
286 vapier 1.74 # @FUNCTION: gcc-minor-version
287     # @RETURN: minor compiler version (minor: 3.[4].6)
288 vapier 1.1 gcc-minor-version() {
289 vapier 1.63 gcc-version "$@" | cut -f2 -d.
290 vapier 1.1 }
291 vapier 1.74 # @FUNCTION: gcc-micro-version
292     # @RETURN: micro compiler version (micro: 3.4.[6])
293 vapier 1.1 gcc-micro-version() {
294 vapier 1.63 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
295 vapier 1.1 }
296 vapier 1.74
297 kevquinn 1.68 # Returns the installation directory - internal toolchain
298     # function for use by _gcc-specs-exists (for flag-o-matic).
299     _gcc-install-dir() {
300 vapier 1.76 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
301 kevquinn 1.68 awk '$1=="install:" {print $2}')"
302     }
303     # Returns true if the indicated specs file exists - internal toolchain
304     # function for use by flag-o-matic.
305     _gcc-specs-exists() {
306     [[ -f $(_gcc-install-dir)/$1 ]]
307     }
308 kevquinn 1.41
309 kevquinn 1.68 # Returns requested gcc specs directive unprocessed - for used by
310     # gcc-specs-directive()
311 kevquinn 1.46 # Note; later specs normally overwrite earlier ones; however if a later
312     # spec starts with '+' then it appends.
313     # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
314 kevquinn 1.68 # as "Reading <file>", in order. Strictly speaking, if there's a
315     # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
316     # the same token anything from 'gcc -dumpspecs' is overridden by
317     # the contents of $(gcc_install_dir)/specs so the result is the
318     # same either way.
319     _gcc-specs-directive_raw() {
320 kevquinn 1.57 local cc=$(tc-getCC)
321     local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
322     ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
323 kevquinn 1.46 'BEGIN { pspec=""; spec=""; outside=1 }
324     $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
325 kevquinn 1.41 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
326 kevquinn 1.46 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
327     { spec=spec $0 }
328     END { print spec }'
329     return 0
330 kevquinn 1.41 }
331    
332 kevquinn 1.68 # Return the requested gcc specs directive, with all included
333     # specs expanded.
334     # Note, it does not check for inclusion loops, which cause it
335     # to never finish - but such loops are invalid for gcc and we're
336     # assuming gcc is operational.
337     gcc-specs-directive() {
338     local directive subdname subdirective
339     directive="$(_gcc-specs-directive_raw $1)"
340     while [[ ${directive} == *%\(*\)* ]]; do
341     subdname=${directive/*%\(}
342     subdname=${subdname/\)*}
343     subdirective="$(_gcc-specs-directive_raw ${subdname})"
344     directive="${directive//\%(${subdname})/${subdirective}}"
345     done
346     echo "${directive}"
347     return 0
348     }
349    
350 kevquinn 1.41 # Returns true if gcc sets relro
351     gcc-specs-relro() {
352     local directive
353     directive=$(gcc-specs-directive link_command)
354     return $([[ ${directive/\{!norelro:} != ${directive} ]])
355     }
356     # Returns true if gcc sets now
357     gcc-specs-now() {
358     local directive
359     directive=$(gcc-specs-directive link_command)
360     return $([[ ${directive/\{!nonow:} != ${directive} ]])
361     }
362     # Returns true if gcc builds PIEs
363     gcc-specs-pie() {
364     local directive
365     directive=$(gcc-specs-directive cc1)
366     return $([[ ${directive/\{!nopie:} != ${directive} ]])
367     }
368     # Returns true if gcc builds with the stack protector
369     gcc-specs-ssp() {
370     local directive
371     directive=$(gcc-specs-directive cc1)
372     return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
373     }
374 kevquinn 1.46 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
375     gcc-specs-ssp-to-all() {
376     local directive
377     directive=$(gcc-specs-directive cc1)
378     return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
379     }
380 vapier 1.60
381    
382 vapier 1.74 # @FUNCTION: gen_usr_ldscript
383     # @USAGE: <list of libs to create linker scripts for>
384     # @DESCRIPTION:
385 vapier 1.60 # This function generate linker scripts in /usr/lib for dynamic
386     # libs in /lib. This is to fix linking problems when you have
387     # the .so in /lib, and the .a in /usr/lib. What happens is that
388     # in some cases when linking dynamic, the .a in /usr/lib is used
389     # instead of the .so in /lib due to gcc/libtool tweaking ld's
390 vapier 1.74 # library search path. This causes many builds to fail.
391 vapier 1.60 # See bug #4411 for more info.
392     #
393     # Note that you should in general use the unversioned name of
394 vapier 1.74 # the library (libfoo.so), as ldconfig should usually update it
395     # correctly to point to the latest version of the library present.
396 vapier 1.70 gen_usr_ldscript() {
397 vapier 1.60 local lib libdir=$(get_libdir) output_format=""
398     # Just make sure it exists
399     dodir /usr/${libdir}
400    
401     # OUTPUT_FORMAT gives hints to the linker as to what binary format
402     # is referenced ... makes multilib saner
403     output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
404     [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
405    
406     for lib in "$@" ; do
407 vapier 1.62 if [[ ${USERLAND} == "Darwin" ]] ; then
408     ewarn "Not creating fake dynamic library for $lib on Darwin;"
409 grobian 1.61 ewarn "making a symlink instead."
410     dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
411     else
412     cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
413     /* GNU ld script
414     Since Gentoo has critical dynamic libraries
415     in /lib, and the static versions in /usr/lib,
416     we need to have a "fake" dynamic lib in /usr/lib,
417     otherwise we run into linking problems.
418    
419     See bug http://bugs.gentoo.org/4411 for more info.
420     */
421     ${output_format}
422     GROUP ( /${libdir}/${lib} )
423     END_LDSCRIPT
424     fi
425 vapier 1.60 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
426     done
427     }

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