/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.70 - (hide annotations) (download)
Sat Jun 16 07:11:43 2007 UTC (7 years, 2 months ago) by vapier
Branch: MAIN
Changes since 1.69: +2 -3 lines
finish gen_usr_ldscript to toolchain-funcs from eutils

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 1.70 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.69 2007/03/27 01:46:50 vapier Exp $
4 vapier 1.1 #
5 vapier 1.67 # Maintainer: Toolchain Ninjas <toolchain@gentoo.org>
6 vapier 1.1 #
7 swegener 1.40 # This eclass contains (or should) functions to get common info
8 vapier 1.1 # about the toolchain (libc/compiler/binutils/etc...)
9    
10 vapier 1.69 ___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
11     [[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
12 eradicator 1.34
13 vapier 1.1 DESCRIPTION="Based on the ${ECLASS} eclass"
14    
15     tc-getPROG() {
16 vapier 1.33 local var=$1
17     local prog=$2
18 vapier 1.1
19 vapier 1.17 if [[ -n ${!var} ]] ; then
20 vapier 1.1 echo "${!var}"
21     return 0
22     fi
23    
24 eradicator 1.35 local search=
25     [[ -n $3 ]] && search=$(type -p "$3-${prog}")
26     [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
27     [[ -n ${search} ]] && prog=${search##*/}
28 vapier 1.1
29 vapier 1.17 export ${var}=${prog}
30 vapier 1.1 echo "${!var}"
31     }
32    
33     # Returns the name of the archiver
34 vapier 1.33 tc-getAR() { tc-getPROG AR ar "$@"; }
35 vapier 1.1 # Returns the name of the assembler
36 vapier 1.33 tc-getAS() { tc-getPROG AS as "$@"; }
37 vapier 1.1 # Returns the name of the C compiler
38 vapier 1.33 tc-getCC() { tc-getPROG CC gcc "$@"; }
39 robbat2 1.58 # Returns the name of the C preprocessor
40     tc-getCPP() { tc-getPROG CPP cpp "$@"; }
41 vapier 1.1 # Returns the name of the C++ compiler
42 vapier 1.33 tc-getCXX() { tc-getPROG CXX g++ "$@"; }
43 vapier 1.1 # Returns the name of the linker
44 vapier 1.33 tc-getLD() { tc-getPROG LD ld "$@"; }
45 kanaka 1.59 # Returns the name of the strip prog
46     tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
47 vapier 1.1 # Returns the name of the symbol/object thingy
48 vapier 1.33 tc-getNM() { tc-getPROG NM nm "$@"; }
49 vapier 1.1 # Returns the name of the archiver indexer
50 vapier 1.33 tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
51 kanaka 1.59 # Returns the name of the fortran 77 compiler
52     tc-getF77() { tc-getPROG F77 f77 "$@"; }
53     # Returns the name of the fortran 90 compiler
54     tc-getF90() { tc-getPROG F90 gfortran "$@"; }
55 vapier 1.7 # Returns the name of the fortran compiler
56 kanaka 1.59 tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
57 vapier 1.8 # Returns the name of the java compiler
58 vapier 1.33 tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
59 vapier 1.1
60 vapier 1.4 # Returns the name of the C compiler for build
61     tc-getBUILD_CC() {
62 vapier 1.43 local v
63     for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
64     if [[ -n ${!v} ]] ; then
65     export BUILD_CC=${!v}
66     echo "${!v}"
67     return 0
68     fi
69     done
70 vapier 1.4
71 vapier 1.9 local search=
72 vapier 1.17 if [[ -n ${CBUILD} ]] ; then
73 vapier 1.21 search=$(type -p ${CBUILD}-gcc)
74 vapier 1.17 search=${search##*/}
75 vapier 1.9 fi
76 vapier 1.45 search=${search:-gcc}
77 vapier 1.11
78 vapier 1.17 export BUILD_CC=${search}
79 vapier 1.11 echo "${search}"
80 vapier 1.4 }
81 vapier 1.1
82 vapier 1.10 # Quick way to export a bunch of vars at once
83     tc-export() {
84     local var
85     for var in "$@" ; do
86 vapier 1.36 eval tc-get${var} > /dev/null
87 vapier 1.10 done
88     }
89    
90 vapier 1.12 # A simple way to see if we're using a cross-compiler ...
91     tc-is-cross-compiler() {
92 vapier 1.43 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
93 vapier 1.12 }
94    
95 vapier 1.65 # See if this toolchain is a softfloat based one.
96     # The possible return values:
97     # - only: the target is always softfloat (never had fpu)
98     # - yes: the target should support softfloat
99     # - no: the target should support hardfloat
100     # This allows us to react differently where packages accept
101     # softfloat flags in the case where support is optional, but
102     # rejects softfloat flags where the target always lacks an fpu.
103     tc-is-softfloat() {
104     case ${CTARGET} in
105 vapier 1.66 bfin*|h8300*)
106 vapier 1.65 echo "only" ;;
107     *)
108     [[ ${CTARGET//_/-} == *-softfloat-* ]] \
109     && echo "yes" \
110     || echo "no"
111     ;;
112     esac
113     }
114 vapier 1.1
115 swegener 1.40 # Parse information from CBUILD/CHOST/CTARGET rather than
116 vapier 1.20 # use external variables from the profile.
117     tc-ninja_magic_to_arch() {
118 vapier 1.21 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
119 vapier 1.19
120     local type=$1
121     local host=$2
122 eradicator 1.25 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
123 vapier 1.19
124     case ${host} in
125     alpha*) echo alpha;;
126     arm*) echo arm;;
127 vapier 1.53 bfin*) ninj blackfin bfin;;
128 vapier 1.47 cris*) echo cris;;
129 vapier 1.19 hppa*) ninj parisc hppa;;
130 vapier 1.47 i?86*) ninj i386 x86;;
131 vapier 1.19 ia64*) echo ia64;;
132 vapier 1.23 m68*) echo m68k;;
133 vapier 1.19 mips*) echo mips;;
134 vapier 1.52 nios2*) echo nios2;;
135     nios*) echo nios;;
136 vapier 1.49 powerpc*)
137     # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
138 josejx 1.54 # have been unified into simply 'powerpc', but until 2.6.16,
139     # ppc32 is still using ARCH="ppc" as default
140     if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
141 vapier 1.49 echo powerpc
142 josejx 1.54 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
143 dostrow 1.55 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
144 josejx 1.54 echo powerpc
145     else
146     echo ppc
147 swegener 1.56 fi
148 vapier 1.49 elif [[ ${host} == powerpc64* ]] ; then
149     echo ppc64
150 dostrow 1.51 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
151     ninj ppc64 ppc
152 vapier 1.49 else
153     echo ppc
154     fi
155 dostrow 1.37 ;;
156 vapier 1.47 s390*) echo s390;;
157     sh64*) ninj sh64 sh;;
158     sh*) echo sh;;
159 vapier 1.19 sparc64*) ninj sparc64 sparc;;
160 vapier 1.28 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
161     && ninj sparc64 sparc \
162     || echo sparc
163     ;;
164 vapier 1.47 vax*) echo vax;;
165     x86_64*) ninj x86_64 amd64;;
166 vapier 1.28 *) echo ${ARCH};;
167 vapier 1.19 esac
168     }
169 vapier 1.20 tc-arch-kernel() {
170     tc-ninja_magic_to_arch kern $@
171 vapier 1.19 }
172 vapier 1.20 tc-arch() {
173     tc-ninja_magic_to_arch portage $@
174 vapier 1.19 }
175    
176 vapier 1.1 # Returns the version as by `$CC -dumpversion`
177     gcc-fullversion() {
178 vapier 1.63 $(tc-getCC "$@") -dumpversion
179 vapier 1.1 }
180     # Returns the version, but only the <major>.<minor>
181     gcc-version() {
182 vapier 1.63 gcc-fullversion "$@" | cut -f1,2 -d.
183 vapier 1.1 }
184     # Returns the Major version
185     gcc-major-version() {
186 vapier 1.63 gcc-version "$@" | cut -f1 -d.
187 vapier 1.1 }
188     # Returns the Minor version
189     gcc-minor-version() {
190 vapier 1.63 gcc-version "$@" | cut -f2 -d.
191 vapier 1.1 }
192     # Returns the Micro version
193     gcc-micro-version() {
194 vapier 1.63 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
195 vapier 1.1 }
196 kevquinn 1.68 # Returns the installation directory - internal toolchain
197     # function for use by _gcc-specs-exists (for flag-o-matic).
198     _gcc-install-dir() {
199     echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\
200     awk '$1=="install:" {print $2}')"
201     }
202     # Returns true if the indicated specs file exists - internal toolchain
203     # function for use by flag-o-matic.
204     _gcc-specs-exists() {
205     [[ -f $(_gcc-install-dir)/$1 ]]
206     }
207 kevquinn 1.41
208 kevquinn 1.68 # Returns requested gcc specs directive unprocessed - for used by
209     # gcc-specs-directive()
210 kevquinn 1.46 # Note; later specs normally overwrite earlier ones; however if a later
211     # spec starts with '+' then it appends.
212     # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
213 kevquinn 1.68 # as "Reading <file>", in order. Strictly speaking, if there's a
214     # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
215     # the same token anything from 'gcc -dumpspecs' is overridden by
216     # the contents of $(gcc_install_dir)/specs so the result is the
217     # same either way.
218     _gcc-specs-directive_raw() {
219 kevquinn 1.57 local cc=$(tc-getCC)
220     local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
221     ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
222 kevquinn 1.46 'BEGIN { pspec=""; spec=""; outside=1 }
223     $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
224 kevquinn 1.41 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
225 kevquinn 1.46 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
226     { spec=spec $0 }
227     END { print spec }'
228     return 0
229 kevquinn 1.41 }
230    
231 kevquinn 1.68 # Return the requested gcc specs directive, with all included
232     # specs expanded.
233     # Note, it does not check for inclusion loops, which cause it
234     # to never finish - but such loops are invalid for gcc and we're
235     # assuming gcc is operational.
236     gcc-specs-directive() {
237     local directive subdname subdirective
238     directive="$(_gcc-specs-directive_raw $1)"
239     while [[ ${directive} == *%\(*\)* ]]; do
240     subdname=${directive/*%\(}
241     subdname=${subdname/\)*}
242     subdirective="$(_gcc-specs-directive_raw ${subdname})"
243     directive="${directive//\%(${subdname})/${subdirective}}"
244     done
245     echo "${directive}"
246     return 0
247     }
248    
249 kevquinn 1.41 # Returns true if gcc sets relro
250     gcc-specs-relro() {
251     local directive
252     directive=$(gcc-specs-directive link_command)
253     return $([[ ${directive/\{!norelro:} != ${directive} ]])
254     }
255     # Returns true if gcc sets now
256     gcc-specs-now() {
257     local directive
258     directive=$(gcc-specs-directive link_command)
259     return $([[ ${directive/\{!nonow:} != ${directive} ]])
260     }
261     # Returns true if gcc builds PIEs
262     gcc-specs-pie() {
263     local directive
264     directive=$(gcc-specs-directive cc1)
265     return $([[ ${directive/\{!nopie:} != ${directive} ]])
266     }
267     # Returns true if gcc builds with the stack protector
268     gcc-specs-ssp() {
269     local directive
270     directive=$(gcc-specs-directive cc1)
271     return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
272     }
273 kevquinn 1.46 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
274     gcc-specs-ssp-to-all() {
275     local directive
276     directive=$(gcc-specs-directive cc1)
277     return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
278     }
279 vapier 1.60
280    
281     # This function generate linker scripts in /usr/lib for dynamic
282     # libs in /lib. This is to fix linking problems when you have
283     # the .so in /lib, and the .a in /usr/lib. What happens is that
284     # in some cases when linking dynamic, the .a in /usr/lib is used
285     # instead of the .so in /lib due to gcc/libtool tweaking ld's
286     # library search path. This cause many builds to fail.
287     # See bug #4411 for more info.
288     #
289     # To use, simply call:
290     #
291     # gen_usr_ldscript libfoo.so
292     #
293     # Note that you should in general use the unversioned name of
294     # the library, as ldconfig should usually update it correctly
295     # to point to the latest version of the library present.
296 vapier 1.70 gen_usr_ldscript() {
297 vapier 1.60 local lib libdir=$(get_libdir) output_format=""
298     # Just make sure it exists
299     dodir /usr/${libdir}
300    
301     # OUTPUT_FORMAT gives hints to the linker as to what binary format
302     # is referenced ... makes multilib saner
303     output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
304     [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
305    
306     for lib in "$@" ; do
307 vapier 1.62 if [[ ${USERLAND} == "Darwin" ]] ; then
308     ewarn "Not creating fake dynamic library for $lib on Darwin;"
309 grobian 1.61 ewarn "making a symlink instead."
310     dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
311     else
312     cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
313     /* GNU ld script
314     Since Gentoo has critical dynamic libraries
315     in /lib, and the static versions in /usr/lib,
316     we need to have a "fake" dynamic lib in /usr/lib,
317     otherwise we run into linking problems.
318    
319     See bug http://bugs.gentoo.org/4411 for more info.
320     */
321     ${output_format}
322     GROUP ( /${libdir}/${lib} )
323     END_LDSCRIPT
324     fi
325 vapier 1.60 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
326     done
327     }

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