eclass/toolchain-funcs.eclass


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# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.18 2004/12/31 03:18:42 vapier Exp $
#
# Author: Toolchain Ninjas <ninjas@gentoo.org>
#
# This eclass contains (or should) functions to get common info 
# about the toolchain (libc/compiler/binutils/etc...)

inherit eutils

ECLASS=toolchain-funcs
INHERITED="$INHERITED $ECLASS"

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

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

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

	if [[ -n ${CHOST} ]] ; then
		local search=$(type -p "${CHOST}-${prog}")
		[[ -n ${search} ]] && prog=${search##*/}
	fi

	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++ compiler
tc-getCXX() { tc-getPROG CXX g++; }
# Returns the name of the linker
tc-getLD() { tc-getPROG LD ld; }
# 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 compiler
tc-getF77() { tc-getPROG F77 f77; }
# 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() {
	if [[ -n ${CC_FOR_BUILD} ]] ; then
		export BUILD_CC=${CC_FOR_BUILD}
		echo "${CC_FOR_BUILD}"
		return 0
	fi

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

	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}
	done
}

# A simple way to see if we're using a cross-compiler ...
tc-is-cross-compiler() {
	if [[ -n ${CBUILD} ]] ; then
		return $([[ ${CBUILD} != ${CHOST} ]])
	fi
	return 1
}


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