766 lines
25 KiB
Bash
766 lines
25 KiB
Bash
# Copyright 1999-2011 Gentoo Foundation
|
|
# Distributed under the terms of the GNU General Public License v2
|
|
# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.110 2012/05/10 03:31:22 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.
|
|
|
|
if [[ ${___ECLASS_ONCE_TOOLCHAIN_FUNCS} != "recur -_+^+_- spank" ]] ; then
|
|
___ECLASS_ONCE_TOOLCHAIN_FUNCS="recur -_+^+_- spank"
|
|
|
|
inherit multilib
|
|
|
|
DESCRIPTION="Based on the ${ECLASS} eclass"
|
|
|
|
# tc-getPROG <VAR [search vars]> <default> [tuple]
|
|
_tc-getPROG() {
|
|
local tuple=$1
|
|
local v var vars=$2
|
|
local prog=$3
|
|
|
|
var=${vars%% *}
|
|
for v in ${vars} ; do
|
|
if [[ -n ${!v} ]] ; then
|
|
export ${var}="${!v}"
|
|
echo "${!v}"
|
|
return 0
|
|
fi
|
|
done
|
|
|
|
local search=
|
|
[[ -n $4 ]] && search=$(type -p "$4-${prog}")
|
|
[[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}")
|
|
[[ -n ${search} ]] && prog=${search##*/}
|
|
|
|
export ${var}=${prog}
|
|
echo "${!var}"
|
|
}
|
|
tc-getBUILD_PROG() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; }
|
|
tc-getPROG() { _tc-getPROG CHOST "$@"; }
|
|
|
|
# @FUNCTION: tc-getAR
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the archiver
|
|
tc-getAR() { tc-getPROG AR ar "$@"; }
|
|
# @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-getOBJCOPY
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the object copier
|
|
tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
|
|
# @FUNCTION: tc-getF77
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the Fortran 77 compiler
|
|
tc-getF77() { tc-getPROG F77 gfortran "$@"; }
|
|
# @FUNCTION: tc-getFC
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the Fortran 90 compiler
|
|
tc-getFC() { tc-getPROG FC gfortran "$@"; }
|
|
# @FUNCTION: tc-getGCJ
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the java compiler
|
|
tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
|
|
# @FUNCTION: tc-getPKG_CONFIG
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the pkg-config tool
|
|
tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
|
|
# @FUNCTION: tc-getRC
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the Windows resource compiler
|
|
tc-getRC() { tc-getPROG RC windres "$@"; }
|
|
# @FUNCTION: tc-getDLLWRAP
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the Windows dllwrap utility
|
|
tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
|
|
|
|
# @FUNCTION: tc-getBUILD_AR
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the archiver for building binaries to run on the build machine
|
|
tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
|
|
# @FUNCTION: tc-getBUILD_AS
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the assembler for building binaries to run on the build machine
|
|
tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
|
|
# @FUNCTION: tc-getBUILD_CC
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the C compiler for building binaries to run on the build machine
|
|
tc-getBUILD_CC() { tc-getBUILD_PROG CC gcc "$@"; }
|
|
# @FUNCTION: tc-getBUILD_CPP
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the C preprocessor for building binaries to run on the build machine
|
|
tc-getBUILD_CPP() { tc-getBUILD_PROG CPP cpp "$@"; }
|
|
# @FUNCTION: tc-getBUILD_CXX
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the C++ compiler for building binaries to run on the build machine
|
|
tc-getBUILD_CXX() { tc-getBUILD_PROG CXX g++ "$@"; }
|
|
# @FUNCTION: tc-getBUILD_LD
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the linker for building binaries to run on the build machine
|
|
tc-getBUILD_LD() { tc-getBUILD_PROG LD ld "$@"; }
|
|
# @FUNCTION: tc-getBUILD_STRIP
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the strip program for building binaries to run on the build machine
|
|
tc-getBUILD_STRIP() { tc-getBUILD_PROG STRIP strip "$@"; }
|
|
# @FUNCTION: tc-getBUILD_NM
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the symbol/object thingy for building binaries to run on the build machine
|
|
tc-getBUILD_NM() { tc-getBUILD_PROG NM nm "$@"; }
|
|
# @FUNCTION: tc-getBUILD_RANLIB
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the archiver indexer for building binaries to run on the build machine
|
|
tc-getBUILD_RANLIB() { tc-getBUILD_PROG RANLIB ranlib "$@"; }
|
|
# @FUNCTION: tc-getBUILD_OBJCOPY
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the object copier for building binaries to run on the build machine
|
|
tc-getBUILD_OBJCOPY() { tc-getBUILD_PROG OBJCOPY objcopy "$@"; }
|
|
# @FUNCTION: tc-getBUILD_PKG_CONFIG
|
|
# @USAGE: [toolchain prefix]
|
|
# @RETURN: name of the pkg-config tool for building binaries to run on the build machine
|
|
tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
|
|
|
|
# @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
|
|
[[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
|
|
eval tc-get${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}} != ${CHOST} ]])
|
|
}
|
|
|
|
# @FUNCTION: tc-is-softfloat
|
|
# @DESCRIPTION:
|
|
# See if this toolchain is a softfloat based one.
|
|
# @CODE
|
|
# The possible return values:
|
|
# - only: the target is always softfloat (never had fpu)
|
|
# - yes: the target should support softfloat
|
|
# - no: the target doesn't support softfloat
|
|
# @CODE
|
|
# This allows us to react differently where packages accept
|
|
# softfloat flags in the case where support is optional, but
|
|
# rejects softfloat flags where the target always lacks an fpu.
|
|
tc-is-softfloat() {
|
|
local CTARGET=${CTARGET:-${CHOST}}
|
|
case ${CTARGET} in
|
|
bfin*|h8300*)
|
|
echo "only" ;;
|
|
*)
|
|
[[ ${CTARGET//_/-} == *-softfloat-* ]] \
|
|
&& echo "yes" \
|
|
|| echo "no"
|
|
;;
|
|
esac
|
|
}
|
|
|
|
# @FUNCTION: tc-is-hardfloat
|
|
# @DESCRIPTION:
|
|
# See if this toolchain is a hardfloat based one.
|
|
# @CODE
|
|
# The possible return values:
|
|
# - yes: the target should support hardfloat
|
|
# - no: the target doesn't support hardfloat
|
|
tc-is-hardfloat() {
|
|
[[ ${CTARGET//_/-} == *-hardfloat-* ]] \
|
|
&& echo "yes" \
|
|
|| echo "no"
|
|
}
|
|
|
|
# @FUNCTION: tc-is-static-only
|
|
# @DESCRIPTION:
|
|
# Return shell true if the target does not support shared libs, shell false
|
|
# otherwise.
|
|
tc-is-static-only() {
|
|
local host=${CTARGET:-${CHOST}}
|
|
|
|
# *MiNT doesn't have shared libraries, only platform so far
|
|
return $([[ ${host} == *-mint* ]])
|
|
}
|
|
|
|
# @FUNCTION: tc-env_build
|
|
# @USAGE: <command> [command args]
|
|
# @INTERNAL
|
|
# @DESCRIPTION:
|
|
# Setup the compile environment to the build tools and then execute the
|
|
# specified command. We use tc-getBUILD_XX here so that we work with
|
|
# all of the semi-[non-]standard env vars like $BUILD_CC which often
|
|
# the target build system does not check.
|
|
tc-env_build() {
|
|
CFLAGS=${BUILD_CFLAGS:--O1 -pipe} \
|
|
CXXFLAGS=${BUILD_CXXFLAGS:--O1 -pipe} \
|
|
CPPFLAGS=${BUILD_CPPFLAGS} \
|
|
LDFLAGS=${BUILD_LDFLAGS} \
|
|
AR=$(tc-getBUILD_AR) \
|
|
AS=$(tc-getBUILD_AS) \
|
|
CC=$(tc-getBUILD_CC) \
|
|
CPP=$(tc-getBUILD_CPP) \
|
|
CXX=$(tc-getBUILD_CXX) \
|
|
LD=$(tc-getBUILD_LD) \
|
|
NM=$(tc-getBUILD_NM) \
|
|
PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
|
|
RANLIB=$(tc-getBUILD_RANLIB) \
|
|
"$@"
|
|
}
|
|
|
|
# @FUNCTION: econf_build
|
|
# @USAGE: [econf flags]
|
|
# @DESCRIPTION:
|
|
# Sometimes we need to locally build up some tools to run on CBUILD because
|
|
# the package has helper utils which are compiled+executed when compiling.
|
|
# This won't work when cross-compiling as the CHOST is set to a target which
|
|
# we cannot natively execute.
|
|
#
|
|
# For example, the python package will build up a local python binary using
|
|
# a portable build system (configure+make), but then use that binary to run
|
|
# local python scripts to build up other components of the overall python.
|
|
# We cannot rely on the python binary in $PATH as that often times will be
|
|
# a different version, or not even installed in the first place. Instead,
|
|
# we compile the code in a different directory to run on CBUILD, and then
|
|
# use that binary when compiling the main package to run on CHOST.
|
|
#
|
|
# For example, with newer EAPIs, you'd do something like:
|
|
# @CODE
|
|
# src_configure() {
|
|
# ECONF_SOURCE=${S}
|
|
# if tc-is-cross-compiler ; then
|
|
# mkdir "${WORKDIR}"/${CBUILD}
|
|
# pushd "${WORKDIR}"/${CBUILD} >/dev/null
|
|
# econf_build --disable-some-unused-stuff
|
|
# popd >/dev/null
|
|
# fi
|
|
# ... normal build paths ...
|
|
# }
|
|
# src_compile() {
|
|
# if tc-is-cross-compiler ; then
|
|
# pushd "${WORKDIR}"/${CBUILD} >/dev/null
|
|
# emake one-or-two-build-tools
|
|
# ln/mv build-tools to normal build paths in ${S}/
|
|
# popd >/dev/null
|
|
# fi
|
|
# ... normal build paths ...
|
|
# }
|
|
# @CODE
|
|
econf_build() {
|
|
tc-env_build econf --build=${CBUILD:-${CHOST}} "$@"
|
|
}
|
|
|
|
# @FUNCTION: tc-has-openmp
|
|
# @USAGE: [toolchain prefix]
|
|
# @DESCRIPTION:
|
|
# See if the toolchain supports OpenMP.
|
|
tc-has-openmp() {
|
|
local base="${T}/test-tc-openmp"
|
|
cat <<-EOF > "${base}.c"
|
|
#include <omp.h>
|
|
int main() {
|
|
int nthreads, tid, ret = 0;
|
|
#pragma omp parallel private(nthreads, tid)
|
|
{
|
|
tid = omp_get_thread_num();
|
|
nthreads = omp_get_num_threads(); ret += tid + nthreads;
|
|
}
|
|
return ret;
|
|
}
|
|
EOF
|
|
$(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
|
|
local ret=$?
|
|
rm -f "${base}"*
|
|
return ${ret}
|
|
}
|
|
|
|
# @FUNCTION: tc-has-tls
|
|
# @USAGE: [-s|-c|-l] [toolchain prefix]
|
|
# @DESCRIPTION:
|
|
# See if the toolchain supports thread local storage (TLS). Use -s to test the
|
|
# compiler, -c to also test the assembler, and -l to also test the C library
|
|
# (the default).
|
|
tc-has-tls() {
|
|
local base="${T}/test-tc-tls"
|
|
cat <<-EOF > "${base}.c"
|
|
int foo(int *i) {
|
|
static __thread int j = 0;
|
|
return *i ? j : *i;
|
|
}
|
|
EOF
|
|
local flags
|
|
case $1 in
|
|
-s) flags="-S";;
|
|
-c) flags="-c";;
|
|
-l) ;;
|
|
-*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
|
|
esac
|
|
: ${flags:=-fPIC -shared -Wl,-z,defs}
|
|
[[ $1 == -* ]] && shift
|
|
$(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
|
|
local ret=$?
|
|
rm -f "${base}"*
|
|
return ${ret}
|
|
}
|
|
|
|
|
|
# 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'.
|
|
# FreeBSD still uses i386
|
|
if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; 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 [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
|
|
echo powerpc
|
|
elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; 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*freebsd*) echo amd64;;
|
|
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
|
|
}
|
|
|
|
# Internal func. The first argument is the version info to expand.
|
|
# Query the preprocessor to improve compatibility across different
|
|
# compilers rather than maintaining a --version flag matrix. #335943
|
|
_gcc_fullversion() {
|
|
local ver="$1"; shift
|
|
set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
|
|
eval echo "$ver"
|
|
}
|
|
|
|
# @FUNCTION: gcc-fullversion
|
|
# @RETURN: compiler version (major.minor.micro: [3.4.6])
|
|
gcc-fullversion() {
|
|
_gcc_fullversion '$1.$2.$3' "$@"
|
|
}
|
|
# @FUNCTION: gcc-version
|
|
# @RETURN: compiler version (major.minor: [3.4].6)
|
|
gcc-version() {
|
|
_gcc_fullversion '$1.$2' "$@"
|
|
}
|
|
# @FUNCTION: gcc-major-version
|
|
# @RETURN: major compiler version (major: [3].4.6)
|
|
gcc-major-version() {
|
|
_gcc_fullversion '$1' "$@"
|
|
}
|
|
# @FUNCTION: gcc-minor-version
|
|
# @RETURN: minor compiler version (minor: 3.[4].6)
|
|
gcc-minor-version() {
|
|
_gcc_fullversion '$2' "$@"
|
|
}
|
|
# @FUNCTION: gcc-micro-version
|
|
# @RETURN: micro compiler version (micro: 3.4.[6])
|
|
gcc-micro-version() {
|
|
_gcc_fullversion '$3' "$@"
|
|
}
|
|
|
|
# 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:}" != "${directive}" ]])
|
|
}
|
|
# Returns true if gcc builds with fno-strict-overflow
|
|
gcc-specs-nostrict() {
|
|
local directive
|
|
directive=$(gcc-specs-directive cc1)
|
|
return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
|
|
}
|
|
|
|
|
|
# @FUNCTION: gen_usr_ldscript
|
|
# @USAGE: [-a] <list of libs to create linker scripts for>
|
|
# @DESCRIPTION:
|
|
# This function generate linker scripts in /usr/lib for dynamic
|
|
# libs in /lib. This is to fix linking problems when you have
|
|
# the .so in /lib, and the .a in /usr/lib. What happens is that
|
|
# in some cases when linking dynamic, the .a in /usr/lib is used
|
|
# instead of the .so in /lib due to gcc/libtool tweaking ld's
|
|
# library search path. This causes many builds to fail.
|
|
# See bug #4411 for more info.
|
|
#
|
|
# Note that you should in general use the unversioned name of
|
|
# the library (libfoo.so), as ldconfig should usually update it
|
|
# correctly to point to the latest version of the library present.
|
|
gen_usr_ldscript() {
|
|
local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
|
|
[[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
|
|
|
|
tc-is-static-only && return
|
|
|
|
# Just make sure it exists
|
|
dodir /usr/${libdir}
|
|
|
|
if [[ $1 == "-a" ]] ; then
|
|
auto=true
|
|
shift
|
|
dodir /${libdir}
|
|
fi
|
|
|
|
# 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
|
|
local tlib
|
|
if ${auto} ; then
|
|
lib="lib${lib}${suffix}"
|
|
else
|
|
# Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
|
|
# This especially is for AIX where $(get_libname) can return ".a",
|
|
# so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
|
|
[[ -r ${ED}/${libdir}/${lib} ]] || continue
|
|
#TODO: better die here?
|
|
fi
|
|
|
|
case ${CTARGET:-${CHOST}} in
|
|
*-darwin*)
|
|
if ${auto} ; then
|
|
tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
|
|
else
|
|
tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
|
|
fi
|
|
[[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
|
|
tlib=${tlib##*/}
|
|
|
|
if ${auto} ; then
|
|
mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
|
|
# some install_names are funky: they encode a version
|
|
if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
|
|
mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
|
|
fi
|
|
rm -f "${ED}"/${libdir}/${lib}
|
|
fi
|
|
|
|
# Mach-O files have an id, which is like a soname, it tells how
|
|
# another object linking against this lib should reference it.
|
|
# Since we moved the lib from usr/lib into lib this reference is
|
|
# wrong. Hence, we update it here. We don't configure with
|
|
# libdir=/lib because that messes up libtool files.
|
|
# Make sure we don't lose the specific version, so just modify the
|
|
# existing install_name
|
|
if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
|
|
chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
|
|
local nowrite=yes
|
|
fi
|
|
install_name_tool \
|
|
-id "${EPREFIX}"/${libdir}/${tlib} \
|
|
"${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
|
|
[[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
|
|
# Now as we don't use GNU binutils and our linker doesn't
|
|
# understand linker scripts, just create a symlink.
|
|
pushd "${ED}/usr/${libdir}" > /dev/null
|
|
ln -snf "../../${libdir}/${tlib}" "${lib}"
|
|
popd > /dev/null
|
|
;;
|
|
*-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
|
|
if ${auto} ; then
|
|
mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
|
|
# no way to retrieve soname on these platforms (?)
|
|
tlib=$(readlink "${ED}"/${libdir}/${lib})
|
|
tlib=${tlib##*/}
|
|
if [[ -z ${tlib} ]] ; then
|
|
# ok, apparently was not a symlink, don't remove it and
|
|
# just link to it
|
|
tlib=${lib}
|
|
else
|
|
rm -f "${ED}"/${libdir}/${lib}
|
|
fi
|
|
else
|
|
tlib=${lib}
|
|
fi
|
|
|
|
# we don't have GNU binutils on these platforms, so we symlink
|
|
# instead, which seems to work fine. Keep it relative, otherwise
|
|
# we break some QA checks in Portage
|
|
# on interix, the linker scripts would work fine in _most_
|
|
# situations. if a library links to such a linker script the
|
|
# absolute path to the correct library is inserted into the binary,
|
|
# which is wrong, since anybody linking _without_ libtool will miss
|
|
# some dependencies, since the stupid linker cannot find libraries
|
|
# hardcoded with absolute paths (as opposed to the loader, which
|
|
# seems to be able to do this).
|
|
# this has been seen while building shared-mime-info which needs
|
|
# libxml2, but links without libtool (and does not add libz to the
|
|
# command line by itself).
|
|
pushd "${ED}/usr/${libdir}" > /dev/null
|
|
ln -snf "../../${libdir}/${tlib}" "${lib}"
|
|
popd > /dev/null
|
|
;;
|
|
hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
|
|
if ${auto} ; then
|
|
tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
|
|
[[ -z ${tlib} ]] && tlib=${lib}
|
|
tlib=${tlib##*/} # 'internal name' can have a path component
|
|
mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
|
|
# some SONAMEs are funky: they encode a version before the .so
|
|
if [[ ${tlib} != ${lib}* ]] ; then
|
|
mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
|
|
fi
|
|
[[ ${tlib} != ${lib} ]] &&
|
|
rm -f "${ED}"/${libdir}/${lib}
|
|
else
|
|
tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
|
|
[[ -z ${tlib} ]] && tlib=${lib}
|
|
tlib=${tlib##*/} # 'internal name' can have a path component
|
|
fi
|
|
pushd "${ED}"/usr/${libdir} >/dev/null
|
|
ln -snf "../../${libdir}/${tlib}" "${lib}"
|
|
# need the internal name in usr/lib too, to be available at runtime
|
|
# when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
|
|
[[ ${tlib} != ${lib} ]] &&
|
|
ln -snf "../../${libdir}/${tlib}" "${tlib}"
|
|
popd >/dev/null
|
|
;;
|
|
*)
|
|
if ${auto} ; then
|
|
tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
|
|
[[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
|
|
mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
|
|
# some SONAMEs are funky: they encode a version before the .so
|
|
if [[ ${tlib} != ${lib}* ]] ; then
|
|
mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
|
|
fi
|
|
rm -f "${ED}"/${libdir}/${lib}
|
|
else
|
|
tlib=${lib}
|
|
fi
|
|
cat > "${ED}/usr/${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. This "fake" dynamic lib is a linker script that
|
|
redirects the linker to the real lib. And yes, this works in the cross-
|
|
compiling scenario as the sysroot-ed linker will prepend the real path.
|
|
|
|
See bug http://bugs.gentoo.org/4411 for more info.
|
|
*/
|
|
${output_format}
|
|
GROUP ( ${EPREFIX}/${libdir}/${tlib} )
|
|
END_LDSCRIPT
|
|
;;
|
|
esac
|
|
fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
|
|
done
|
|
}
|
|
|
|
fi
|