# Copyright 1999-2004 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-kernel/openmosix-sources/openmosix-sources-2.4.21-r3.ebuild,v 1.2 2004/04/27 22:03:12 agriffis Exp $
#OKV=original kernel version, KV=patched kernel version.  They can be the same.

inherit eutils

#we use this next variable to avoid duplicating stuff on cvs
GFILESDIR=${PORTDIR}/sys-kernel/linux-sources/files
OKV=2.4.21
[ "${PR}" == "r0" ] && KV=${OKV}-openmosix || KV=${OKV}-openmosix-${PR}
EXTRAVERSION="`echo ${KV}|sed -e 's:[0-9]\+\.[0-9]\+\.[0-9]\+\(.*\):\1:'`"
S=${WORKDIR}/linux-${KV}
ETYPE="sources"

# What's in this kernel?

# INCLUDED:
#   2.4.21, plus:
#   2.4.21  openmosix-2.4.21-1
#	Experimental Migshm-1.4 threading/shared memory support patch

DESCRIPTION="Full sources for the Gentoo openMosix Linux kernel"
SRC_URI="http://www.kernel.org/pub/linux/kernel/v2.4/linux-${OKV}.tar.bz2 mirror://sourceforge/openmosix/openMosix-2.4.21-1.bz2 http://mcaserta.com/maask/Migshm-1.4.tgz"
PROVIDE="virtual/linux-sources"
HOMEPAGE="http://www.kernel.org/ http://www.gentoo.org/ http://www.openmosix.org/"
LICENSE="GPL-2"
SLOT="${KV}"
KEYWORDS="-* x86"


if [ $ETYPE = "sources" ] && [ -z "`use build`" ]
then
	#console-tools is needed to solve the loadkeys fiasco; binutils version needed to avoid Athlon/PIII/SSE assembler bugs.
	DEPEND=">=sys-devel/binutils-2.11.90.0.31"
	RDEPEND=">=sys-libs/ncurses-5.2 dev-lang/perl virtual/modutils sys-devel/make"
fi

[ -z "$LINUX_HOSTCFLAGS" ] && LINUX_HOSTCFLAGS="-Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -I${S}/include"

src_unpack() {
	cd ${WORKDIR}
	unpack linux-${OKV}.tar.bz2
	unpack Migshm-1.4.tgz
	mv linux-${OKV} linux-${KV} || die
	cd ${S}
	cat ${DISTDIR}/openMosix-2.4.21-1.bz2 | bzip2 -d | patch -p1 || die

	epatch ${FILESDIR}/do_brk_fix.patch || die "Failed to patch do_brk() vulnerability!"
	epatch ${FILESDIR}/${PN}.CAN-2003-0985.patch || die "Failed to patch mremap() vulnerability!"
	epatch ${FILESDIR}/${PN}-2.4.20.rtc_fix.patch || die "Failed to patch RTC vulnerabilities!"
	epatch ${FILESDIR}/${PN}-2.4.20.munmap.patch || die "Failed to apply munmap patch!"

	# Gentoo Linux uses /boot, so fix 'make install' to work properly
	cd ${S}
	mv Makefile Makefile.orig
	sed -e 's:#export\tINSTALL_PATH:export\tINSTALL_PATH:' \
	    -e "s:^\(EXTRAVERSION =\).*:\1 ${EXTRAVERSION}:" \
		Makefile.orig > Makefile || die # test, remove me if Makefile ok
	rm Makefile.orig
#	rm Makefile~

	# This is the experimental Migshm-1.4 patch...
	cat ${WORKDIR}/Migshm-1.4/patch-Migshm-2.4.21.tgz | gzip -d | patch -p1 || die
	rm -rf ${WORKDIR}/Migshm-1.4

	#sometimes we have icky kernel symbols; this seems to get rid of them
	make mrproper || die

	#this file is required for other things to build properly, so we autogenerate it
	make include/linux/version.h || die

	#fix silly permissions in tarball
	cd ${WORKDIR}
	chown -R root:root *
	chmod -R a+r-w+X,u+w *
}

src_compile() {
	if [ "$ETYPE" = "headers" ]
	then
		yes "" | make oldconfig
		echo "Ignore any errors from the yes command above."
	fi
}

src_install() {
	if [ "$ETYPE" = "sources" ]
	then
		dodir /usr/src
		echo ">>> Copying sources..."
		mv ${WORKDIR}/* ${D}/usr/src
	else
		#linux-headers
		dodir /usr/include/linux
		cp -ax ${S}/include/linux/* ${D}/usr/include/linux
		rm -rf ${D}/usr/include/linux/modules
		dodir /usr/include/asm
		cp -ax ${S}/include/asm-i386/* ${D}/usr/include/asm
	fi
}

pkg_preinst() {
	if [ "$ETYPE" = "headers" ]
	then
		[ -L ${ROOT}usr/include/linux ] && rm ${ROOT}usr/include/linux
		[ -L ${ROOT}usr/include/asm ] && rm ${ROOT}usr/include/asm
		true
	fi
}

pkg_postinst() {
	[ "$ETYPE" = "headers" ] && return
	if [ ! -e ${ROOT}usr/src/linux ]
	then
		rm -f ${ROOT}usr/src/linux
		ln -sf linux-${KV} ${ROOT}/usr/src/linux
	fi
}