gentoo-x86/eclass/toolchain-funcs.eclass

# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.75 2008/01/02 01:01:03 vapier Exp $

# @ECLASS: toolchain-funcs.eclass
# @MAINTAINER:
# Toolchain Ninjas <toolchain@gentoo.org>
# @BLURB: functions to query common info about the toolchain
# @DESCRIPTION:
# The toolchain-funcs aims to provide a complete suite of functions
# for gleaning useful information about the toolchain and to simplify
# ugly things like cross-compiling and multilib.  All of this is done
# in such a way that you can rely on the function always returning
# something sane.

___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && 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}"
}

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

# @FUNCTION: tc-getBUILD_CC
# @USAGE: [toolchain prefix]
# @RETURN: name of the C compiler for building binaries to run on the build machine
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}"
}

# @FUNCTION: tc-export
# @USAGE: <list of toolchain variables>
# @DESCRIPTION:
# Quick way to export a bunch of compiler vars at once.
tc-export() {
        local var
        for var in "$@" ; do
                eval tc-get${var} > /dev/null
        done
}

# @FUNCTION: tc-is-cross-compiler
# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
tc-is-cross-compiler() {
        return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
}

# @FUNCTION: tc-is-softfloat
# @DESCRIPTION:
# See if this toolchain is a softfloat based one.
# @CODE
# 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
# @CODE
# 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
                bfin*|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;;
                avr*)           ninj avr32 avr;;
                bfin*)          ninj blackfin bfin;;
                cris*)          echo cris;;
                hppa*)          ninj parisc hppa;;
                i?86*)
                        # Starting with linux-2.6.24, the 'x86_64' and 'i386'
                        # trees have been unified into 'x86'.
                        if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) ]] ; then
                                echo i386
                        else
                                echo x86
                        fi
                        ;;
                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*)
                        # Starting with linux-2.6.24, the 'x86_64' and 'i386'
                        # trees have been unified into 'x86'.
                        if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
                                echo x86
                        else
                                ninj x86_64 amd64
                        fi
                        ;;

                # since our usage of tc-arch is largely concerned with
                # normalizing inputs for testing ${CTARGET}, let's filter
                # other cross targets (mingw and such) into the unknown.
                *)                      echo unknown;;
        esac
}
# @FUNCTION: tc-arch-kernel
# @USAGE: [toolchain prefix]
# @RETURN: name of the kernel arch according to the compiler target
tc-arch-kernel() {
        tc-ninja_magic_to_arch kern "$@"
}
# @FUNCTION: tc-arch
# @USAGE: [toolchain prefix]
# @RETURN: name of the portage arch according to the compiler target
tc-arch() {
        tc-ninja_magic_to_arch portage "$@"
}

tc-endian() {
        local host=$1
        [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
        host=${host%%-*}

        case ${host} in
                alpha*)         echo big;;
                arm*b*)         echo big;;
                arm*)           echo little;;
                cris*)          echo little;;
                hppa*)          echo big;;
                i?86*)          echo little;;
                ia64*)          echo little;;
                m68*)           echo big;;
                mips*l*)        echo little;;
                mips*)          echo big;;
                powerpc*)       echo big;;
                s390*)          echo big;;
                sh*b*)          echo big;;
                sh*)            echo little;;
                sparc*)         echo big;;
                x86_64*)        echo little;;
                *)                      echo wtf;;
        esac
}

# @FUNCTION: gcc-fullversion
# @RETURN: compiler version (major.minor.micro: [3.4.6])
gcc-fullversion() {
        $(tc-getCC "$@") -dumpversion
}
# @FUNCTION: gcc-version
# @RETURN: compiler version (major.minor: [3.4].6)
gcc-version() {
        gcc-fullversion "$@" | cut -f1,2 -d.
}
# @FUNCTION: gcc-major-version
# @RETURN: major compiler version (major: [3].4.6)
gcc-major-version() {
        gcc-version "$@" | cut -f1 -d.
}
# @FUNCTION: gcc-minor-version
# @RETURN: minor compiler version (minor: 3.[4].6)
gcc-minor-version() {
        gcc-version "$@" | cut -f2 -d.
}
# @FUNCTION: gcc-micro-version
# @RETURN: micro compiler version (micro: 3.4.[6])
gcc-micro-version() {
        gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
}

# Returns the installation directory - internal toolchain
# function for use by _gcc-specs-exists (for flag-o-matic).
_gcc-install-dir() {
        echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
                awk '$1=="install:" {print $2}')"
}
# Returns true if the indicated specs file exists - internal toolchain
# function for use by flag-o-matic.
_gcc-specs-exists() {
        [[ -f $(_gcc-install-dir)/$1 ]]
}

# Returns requested gcc specs directive unprocessed - for used by
# 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.  Strictly speaking, if there's a
# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
# the same token anything from 'gcc -dumpspecs' is overridden by
# the contents of $(gcc_install_dir)/specs so the result is the
# same either way.
_gcc-specs-directive_raw() {
        local cc=$(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
}

# Return the requested gcc specs directive, with all included
# specs expanded.
# Note, it does not check for inclusion loops, which cause it
# to never finish - but such loops are invalid for gcc and we're
# assuming gcc is operational.
gcc-specs-directive() {
        local directive subdname subdirective
        directive="$(_gcc-specs-directive_raw $1)"
        while [[ ${directive} == *%\(*\)* ]]; do
                subdname=${directive/*%\(}
                subdname=${subdname/\)*}
                subdirective="$(_gcc-specs-directive_raw ${subdname})"
                directive="${directive//\%(${subdname})/${subdirective}}"
        done
        echo "${directive}"
        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} ]])
}


# @FUNCTION: gen_usr_ldscript
# @USAGE: <list of libs to create linker scripts for>
# @DESCRIPTION:
# 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 causes many builds to fail.
# See bug #4411 for more info.
#
# Note that you should in general use the unversioned name of
# the library (libfoo.so), as ldconfig should usually update it
# correctly to point to the latest version of the library present.
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
}
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			armb) 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			mipsl) echo little;;
260			mips*) echo big;;
261			powerpc*) echo big;;
262			s390*) echo big;;
263			shb) 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			}