gentoo-x86/eclass/toolchain-funcs.eclass

# Copyright 1999-2006 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.64 2007/01/07 11:39:08 vapier Exp $
#
# Author: Toolchain Ninjas <toolchain@gentoo.org>
#
# This eclass contains (or should) functions to get common info
# about the toolchain (libc/compiler/binutils/etc...)

inherit multilib

DESCRIPTION="Based on the ${ECLASS} eclass"

tc-getPROG() {
        local var=$1
        local prog=$2

        if [[ -n ${!var} ]] ; then
                echo "${!var}"
                return 0
        fi

        local search=
        [[ -n $3 ]] && search=$(type -p "$3-${prog}")
        [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
        [[ -n ${search} ]] && prog=${search##*/}

        export ${var}=${prog}
        echo "${!var}"
}

# Returns the name of the archiver
tc-getAR() { tc-getPROG AR ar "$@"; }
# Returns the name of the assembler
tc-getAS() { tc-getPROG AS as "$@"; }
# Returns the name of the C compiler
tc-getCC() { tc-getPROG CC gcc "$@"; }
# Returns the name of the C preprocessor
tc-getCPP() { tc-getPROG CPP cpp "$@"; }
# Returns the name of the C++ compiler
tc-getCXX() { tc-getPROG CXX g++ "$@"; }
# Returns the name of the linker
tc-getLD() { tc-getPROG LD ld "$@"; }
# Returns the name of the strip prog
tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
# Returns the name of the symbol/object thingy
tc-getNM() { tc-getPROG NM nm "$@"; }
# Returns the name of the archiver indexer
tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
# Returns the name of the fortran 77 compiler
tc-getF77() { tc-getPROG F77 f77 "$@"; }
# Returns the name of the fortran 90 compiler
tc-getF90() { tc-getPROG F90 gfortran "$@"; }
# Returns the name of the fortran compiler
tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
# Returns the name of the java compiler
tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }

# Returns the name of the C compiler for build
tc-getBUILD_CC() {
        local v
        for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
                if [[ -n ${!v} ]] ; then
                        export BUILD_CC=${!v}
                        echo "${!v}"
                        return 0
                fi
        done

        local search=
        if [[ -n ${CBUILD} ]] ; then
                search=$(type -p ${CBUILD}-gcc)
                search=${search##*/}
        fi
        search=${search:-gcc}

        export BUILD_CC=${search}
        echo "${search}"
}

# Quick way to export a bunch of vars at once
tc-export() {
        local var
        for var in "$@" ; do
                eval tc-get${var} > /dev/null
        done
}

# A simple way to see if we're using a cross-compiler ...
tc-is-cross-compiler() {
        return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
}

# See if this toolchain is a softfloat based one.
# The possible return values:
#  - only: the target is always softfloat (never had fpu)
#  - yes:  the target should support softfloat
#  - no:   the target should support hardfloat
# This allows us to react differently where packages accept
# softfloat flags in the case where support is optional, but
# rejects softfloat flags where the target always lacks an fpu.
tc-is-softfloat() {
        case ${CTARGET} in
                h8300*)
                        echo "only" ;;
                *)
                        [[ ${CTARGET//_/-} == *-softfloat-* ]] \
                                && echo "yes" \
                                || echo "no"
                        ;;
        esac
}

# Parse information from CBUILD/CHOST/CTARGET rather than
# use external variables from the profile.
tc-ninja_magic_to_arch() {
ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }

        local type=$1
        local host=$2
        [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}

        case ${host} in
                alpha*)         echo alpha;;
                arm*)           echo arm;;
                bfin*)          ninj blackfin bfin;;
                cris*)          echo cris;;
                hppa*)          ninj parisc hppa;;
                i?86*)          ninj i386 x86;;
                ia64*)          echo ia64;;
                m68*)           echo m68k;;
                mips*)          echo mips;;
                nios2*)         echo nios2;;
                nios*)          echo nios;;
                powerpc*)
                                        # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
                                        # have been unified into simply 'powerpc', but until 2.6.16,
                                        # ppc32 is still using ARCH="ppc" as default
                                        if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
                                                echo powerpc
                                        elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
                                                if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
                                                        echo powerpc
                                                else
                                                        echo ppc
                                                fi
                                        elif [[ ${host} == powerpc64* ]] ; then
                                                echo ppc64
                                        elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
                                                ninj ppc64 ppc
                                        else
                                                echo ppc
                                        fi
                                        ;;
                s390*)          echo s390;;
                sh64*)          ninj sh64 sh;;
                sh*)            echo sh;;
                sparc64*)       ninj sparc64 sparc;;
                sparc*)         [[ ${PROFILE_ARCH} == "sparc64" ]] \
                                                && ninj sparc64 sparc \
                                                || echo sparc
                                        ;;
                vax*)           echo vax;;
                x86_64*)        ninj x86_64 amd64;;
                *)                      echo ${ARCH};;
        esac
}
tc-arch-kernel() {
        tc-ninja_magic_to_arch kern $@
}
tc-arch() {
        tc-ninja_magic_to_arch portage $@
}

# Returns the version as by `$CC -dumpversion`
gcc-fullversion() {
        $(tc-getCC "$@") -dumpversion
}
# Returns the version, but only the <major>.<minor>
gcc-version() {
        gcc-fullversion "$@" | cut -f1,2 -d.
}
# Returns the Major version
gcc-major-version() {
        gcc-version "$@" | cut -f1 -d.
}
# Returns the Minor version
gcc-minor-version() {
        gcc-version "$@" | cut -f2 -d.
}
# Returns the Micro version
gcc-micro-version() {
        gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
}

# Returns requested gcc specs directive
# Note; later specs normally overwrite earlier ones; however if a later
# spec starts with '+' then it appends.
# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
# as "Reading <file>", in order.
gcc-specs-directive() {
        local cc=$(tc-getCC)
        local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
        ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
'BEGIN  { pspec=""; spec=""; outside=1 }
$1=="*"directive":"  { pspec=spec; spec=""; outside=0; next }
        outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
        spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
        { spec=spec $0 }
END     { print spec }'
        return 0
}

# Returns true if gcc sets relro
gcc-specs-relro() {
        local directive
        directive=$(gcc-specs-directive link_command)
        return $([[ ${directive/\{!norelro:} != ${directive} ]])
}
# Returns true if gcc sets now
gcc-specs-now() {
        local directive
        directive=$(gcc-specs-directive link_command)
        return $([[ ${directive/\{!nonow:} != ${directive} ]])
}
# Returns true if gcc builds PIEs
gcc-specs-pie() {
        local directive
        directive=$(gcc-specs-directive cc1)
        return $([[ ${directive/\{!nopie:} != ${directive} ]])
}
# Returns true if gcc builds with the stack protector
gcc-specs-ssp() {
        local directive
        directive=$(gcc-specs-directive cc1)
        return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
}
# Returns true if gcc upgrades fstack-protector to fstack-protector-all
gcc-specs-ssp-to-all() {
        local directive
        directive=$(gcc-specs-directive cc1)
        return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
}


# This function generate linker scripts in /usr/lib for dynamic
# libs in /lib.  This is to fix linking problems when you have
# the .so in /lib, and the .a in /usr/lib.  What happens is that
# in some cases when linking dynamic, the .a in /usr/lib is used
# instead of the .so in /lib due to gcc/libtool tweaking ld's
# library search path.  This cause many builds to fail.
# See bug #4411 for more info.
#
# To use, simply call:
#
#   gen_usr_ldscript libfoo.so
#
# Note that you should in general use the unversioned name of
# the library, as ldconfig should usually update it correctly
# to point to the latest version of the library present.
_tc_gen_usr_ldscript() {
        local lib libdir=$(get_libdir) output_format=""
        # Just make sure it exists
        dodir /usr/${libdir}

        # OUTPUT_FORMAT gives hints to the linker as to what binary format
        # is referenced ... makes multilib saner
        output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
        [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"

        for lib in "$@" ; do
                if [[ ${USERLAND} == "Darwin" ]] ; then
                        ewarn "Not creating fake dynamic library for $lib on Darwin;"
                        ewarn "making a symlink instead."
                        dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
                else
                        cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
                        /* GNU ld script
                           Since Gentoo has critical dynamic libraries
                           in /lib, and the static versions in /usr/lib,
                           we need to have a "fake" dynamic lib in /usr/lib,
                           otherwise we run into linking problems.

                           See bug http://bugs.gentoo.org/4411 for more info.
                         */
                        ${output_format}
                        GROUP ( /${libdir}/${lib} )
                        END_LDSCRIPT
                fi
                fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
        done
}
gen_usr_ldscript() { _tc_gen_usr_ldscript "$@" ; }
1	vapier	1.50	# Copyright 1999-2006 Gentoo Foundation
2	vapier	1.1	# Distributed under the terms of the GNU General Public License v2
3	vapier	1.65	# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.64 2007/01/07 11:39:08 vapier Exp $
4	vapier	1.1	#
5	vapier	1.47	# Author: 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	eradicator	1.34	inherit multilib
11
12	vapier	1.1	DESCRIPTION="Based on the ${ECLASS} eclass"
13
14			tc-getPROG() {
15	vapier	1.33	local var=$1
16			local prog=$2
17	vapier	1.1
18	vapier	1.17	if [[ -n ${!var} ]] ; then
19	vapier	1.1	echo "${!var}"
20			return 0
21			fi
22
23	eradicator	1.35	local search=
24			[[ -n $3 ]] && search=$(type -p "$3-${prog}")
25			[[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
26			[[ -n ${search} ]] && prog=${search##*/}
27	vapier	1.1
28	vapier	1.17	export ${var}=${prog}
29	vapier	1.1	echo "${!var}"
30			}
31
32			# Returns the name of the archiver
33	vapier	1.33	tc-getAR() { tc-getPROG AR ar "$@"; }
34	vapier	1.1	# Returns the name of the assembler
35	vapier	1.33	tc-getAS() { tc-getPROG AS as "$@"; }
36	vapier	1.1	# Returns the name of the C compiler
37	vapier	1.33	tc-getCC() { tc-getPROG CC gcc "$@"; }
38	robbat2	1.58	# Returns the name of the C preprocessor
39			tc-getCPP() { tc-getPROG CPP cpp "$@"; }
40	vapier	1.1	# Returns the name of the C++ compiler
41	vapier	1.33	tc-getCXX() { tc-getPROG CXX g++ "$@"; }
42	vapier	1.1	# Returns the name of the linker
43	vapier	1.33	tc-getLD() { tc-getPROG LD ld "$@"; }
44	kanaka	1.59	# Returns the name of the strip prog
45			tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
46	vapier	1.1	# Returns the name of the symbol/object thingy
47	vapier	1.33	tc-getNM() { tc-getPROG NM nm "$@"; }
48	vapier	1.1	# Returns the name of the archiver indexer
49	vapier	1.33	tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
50	kanaka	1.59	# Returns the name of the fortran 77 compiler
51			tc-getF77() { tc-getPROG F77 f77 "$@"; }
52			# Returns the name of the fortran 90 compiler
53			tc-getF90() { tc-getPROG F90 gfortran "$@"; }
54	vapier	1.7	# Returns the name of the fortran compiler
55	kanaka	1.59	tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
56	vapier	1.8	# Returns the name of the java compiler
57	vapier	1.33	tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
58	vapier	1.1
59	vapier	1.4	# Returns the name of the C compiler for build
60			tc-getBUILD_CC() {
61	vapier	1.43	local v
62			for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
63			if [[ -n ${!v} ]] ; then
64			export BUILD_CC=${!v}
65			echo "${!v}"
66			return 0
67			fi
68			done
69	vapier	1.4
70	vapier	1.9	local search=
71	vapier	1.17	if [[ -n ${CBUILD} ]] ; then
72	vapier	1.21	search=$(type -p ${CBUILD}-gcc)
73	vapier	1.17	search=${search##*/}
74	vapier	1.9	fi
75	vapier	1.45	search=${search:-gcc}
76	vapier	1.11
77	vapier	1.17	export BUILD_CC=${search}
78	vapier	1.11	echo "${search}"
79	vapier	1.4	}
80	vapier	1.1
81	vapier	1.10	# Quick way to export a bunch of vars at once
82			tc-export() {
83			local var
84			for var in "$@" ; do
85	vapier	1.36	eval tc-get${var} > /dev/null
86	vapier	1.10	done
87			}
88
89	vapier	1.12	# A simple way to see if we're using a cross-compiler ...
90			tc-is-cross-compiler() {
91	vapier	1.43	return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
92	vapier	1.12	}
93
94	vapier	1.65	# See if this toolchain is a softfloat based one.
95			# The possible return values:
96			# - only: the target is always softfloat (never had fpu)
97			# - yes: the target should support softfloat
98			# - no: the target should support hardfloat
99			# This allows us to react differently where packages accept
100			# softfloat flags in the case where support is optional, but
101			# rejects softfloat flags where the target always lacks an fpu.
102			tc-is-softfloat() {
103			case ${CTARGET} in
104			h8300*)
105			echo "only" ;;
106			*)
107			[[ ${CTARGET//_/-} == -softfloat- ]] \
108			&& echo "yes" \
109			\|\| echo "no"
110			;;
111			esac
112			}
113	vapier	1.1
114	swegener	1.40	# Parse information from CBUILD/CHOST/CTARGET rather than
115	vapier	1.20	# use external variables from the profile.
116			tc-ninja_magic_to_arch() {
117	vapier	1.21	ninj() { [[ ${type} == "kern" ]] && echo $1 \|\| echo $2 ; }
118	vapier	1.19
119			local type=$1
120			local host=$2
121	eradicator	1.25	[[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
122	vapier	1.19
123			case ${host} in
124			alpha*) echo alpha;;
125			arm*) echo arm;;
126	vapier	1.53	bfin*) ninj blackfin bfin;;
127	vapier	1.47	cris*) echo cris;;
128	vapier	1.19	hppa*) ninj parisc hppa;;
129	vapier	1.47	i?86*) ninj i386 x86;;
130	vapier	1.19	ia64*) echo ia64;;
131	vapier	1.23	m68*) echo m68k;;
132	vapier	1.19	mips*) echo mips;;
133	vapier	1.52	nios2*) echo nios2;;
134			nios*) echo nios;;
135	vapier	1.49	powerpc*)
136			# Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
137	josejx	1.54	# have been unified into simply 'powerpc', but until 2.6.16,
138			# ppc32 is still using ARCH="ppc" as default
139			if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
140	vapier	1.49	echo powerpc
141	josejx	1.54	elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
142	dostrow	1.55	if [[ ${host} == powerpc64* ]] \|\| [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
143	josejx	1.54	echo powerpc
144			else
145			echo ppc
146	swegener	1.56	fi
147	vapier	1.49	elif [[ ${host} == powerpc64* ]] ; then
148			echo ppc64
149	dostrow	1.51	elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
150			ninj ppc64 ppc
151	vapier	1.49	else
152			echo ppc
153			fi
154	dostrow	1.37	;;
155	vapier	1.47	s390*) echo s390;;
156			sh64*) ninj sh64 sh;;
157			sh*) echo sh;;
158	vapier	1.19	sparc64*) ninj sparc64 sparc;;
159	vapier	1.28	sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
160			&& ninj sparc64 sparc \
161			\|\| echo sparc
162			;;
163	vapier	1.47	vax*) echo vax;;
164			x86_64*) ninj x86_64 amd64;;
165	vapier	1.28	*) echo ${ARCH};;
166	vapier	1.19	esac
167			}
168	vapier	1.20	tc-arch-kernel() {
169			tc-ninja_magic_to_arch kern $@
170	vapier	1.19	}
171	vapier	1.20	tc-arch() {
172			tc-ninja_magic_to_arch portage $@
173	vapier	1.19	}
174
175	vapier	1.1	# Returns the version as by `$CC -dumpversion`
176			gcc-fullversion() {
177	vapier	1.63	$(tc-getCC "$@") -dumpversion
178	vapier	1.1	}
179			# Returns the version, but only the <major>.<minor>
180			gcc-version() {
181	vapier	1.63	gcc-fullversion "$@" \| cut -f1,2 -d.
182	vapier	1.1	}
183			# Returns the Major version
184			gcc-major-version() {
185	vapier	1.63	gcc-version "$@" \| cut -f1 -d.
186	vapier	1.1	}
187			# Returns the Minor version
188			gcc-minor-version() {
189	vapier	1.63	gcc-version "$@" \| cut -f2 -d.
190	vapier	1.1	}
191			# Returns the Micro version
192			gcc-micro-version() {
193	vapier	1.63	gcc-fullversion "$@" \| cut -f3 -d. \| cut -f1 -d-
194	vapier	1.1	}
195	kevquinn	1.41
196			# Returns requested gcc specs directive
197	kevquinn	1.46	# Note; later specs normally overwrite earlier ones; however if a later
198			# spec starts with '+' then it appends.
199			# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
200			# as "Reading <file>", in order.
201	kevquinn	1.41	gcc-specs-directive() {
202	kevquinn	1.57	local cc=$(tc-getCC)
203			local specfiles=$(LC_ALL=C ${cc} -v 2>&1 \| awk '$1=="Reading" {print $NF}')
204			${cc} -dumpspecs 2> /dev/null \| cat - ${specfiles} \| awk -v directive=$1 \
205	kevquinn	1.46	'BEGIN { pspec=""; spec=""; outside=1 }
206			$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
207	kevquinn	1.41	outside \|\| NF==0 \|\| ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
208	kevquinn	1.46	spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
209			{ spec=spec $0 }
210			END { print spec }'
211			return 0
212	kevquinn	1.41	}
213
214			# Returns true if gcc sets relro
215			gcc-specs-relro() {
216			local directive
217			directive=$(gcc-specs-directive link_command)
218			return $([[ ${directive/\{!norelro:} != ${directive} ]])
219			}
220			# Returns true if gcc sets now
221			gcc-specs-now() {
222			local directive
223			directive=$(gcc-specs-directive link_command)
224			return $([[ ${directive/\{!nonow:} != ${directive} ]])
225			}
226			# Returns true if gcc builds PIEs
227			gcc-specs-pie() {
228			local directive
229			directive=$(gcc-specs-directive cc1)
230			return $([[ ${directive/\{!nopie:} != ${directive} ]])
231			}
232			# Returns true if gcc builds with the stack protector
233			gcc-specs-ssp() {
234			local directive
235			directive=$(gcc-specs-directive cc1)
236			return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
237			}
238	kevquinn	1.46	# Returns true if gcc upgrades fstack-protector to fstack-protector-all
239			gcc-specs-ssp-to-all() {
240			local directive
241			directive=$(gcc-specs-directive cc1)
242			return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
243			}
244	vapier	1.60
245
246			# This function generate linker scripts in /usr/lib for dynamic
247			# libs in /lib. This is to fix linking problems when you have
248			# the .so in /lib, and the .a in /usr/lib. What happens is that
249			# in some cases when linking dynamic, the .a in /usr/lib is used
250			# instead of the .so in /lib due to gcc/libtool tweaking ld's
251			# library search path. This cause many builds to fail.
252			# See bug #4411 for more info.
253			#
254			# To use, simply call:
255			#
256			# gen_usr_ldscript libfoo.so
257			#
258			# Note that you should in general use the unversioned name of
259			# the library, as ldconfig should usually update it correctly
260			# to point to the latest version of the library present.
261			_tc_gen_usr_ldscript() {
262			local lib libdir=$(get_libdir) output_format=""
263			# Just make sure it exists
264			dodir /usr/${libdir}
265
266			# OUTPUT_FORMAT gives hints to the linker as to what binary format
267			# is referenced ... makes multilib saner
268			output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 \| sed -n 's/^OUTPUT_FORMAT("\([^"]\)",./\1/p')
269			[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
270
271			for lib in "$@" ; do
272	vapier	1.62	if [[ ${USERLAND} == "Darwin" ]] ; then
273			ewarn "Not creating fake dynamic library for $lib on Darwin;"
274	grobian	1.61	ewarn "making a symlink instead."
275			dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
276			else
277			cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
278			/* GNU ld script
279			Since Gentoo has critical dynamic libraries
280			in /lib, and the static versions in /usr/lib,
281			we need to have a "fake" dynamic lib in /usr/lib,
282			otherwise we run into linking problems.
283
284			See bug http://bugs.gentoo.org/4411 for more info.
285			*/
286			${output_format}
287			GROUP ( /${libdir}/${lib} )
288			END_LDSCRIPT
289			fi
290	vapier	1.60	fperms a+x "/usr/${libdir}/${lib}" \|\| die "could not change perms on ${lib}"
291			done
292			}
293			gen_usr_ldscript() { _tc_gen_usr_ldscript "$@" ; }