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+#!/bin/sh
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+# Copyright (C) 2003 Erik Andersen <andersen@uclibc.org>
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+#
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+# This program is free software; you can redistribute it and/or
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+# modify it under the terms of the GNU Library General Public
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+# License as published by the Free Software Foundation; either
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+# version 2 of the License, or (at your option) any later
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+# version.
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+#
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+# This program is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+# GNU Library General Public License for more details.
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+#
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+# You should have received a copy of the GNU Library General
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+# Public License along with this program; if not, write to the
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+# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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+# Boston, MA 02111-1307 USA
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+
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+usage () {
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+ echo ""
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+ echo "usage: "`basename $0`" -k KERNEL_SOURCE_DIRECTORY -t TARGET_ARCH"
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+ echo ""
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+ echo "This utility scans the KERNEL_SOURCE_DIRECTORY directory and"
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+ echo "checks that it contains well formed kernel headers suitable"
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+ echo "for inclusion as the include/linux/ directory provided by"
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+ echo "uClibc."
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+ echo ""
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+ echo "If the specified kernel headers present and already"
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+ echo "configured for the architecture specified by TARGET_ARCH,"
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+ echo "they will be used as-is."
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+ echo ""
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+ echo "If the specified kernel headers are entirely missing, this"
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+ echo "script returns an error."
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+ echo ""
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+ echo "If the specified kernel headers are present, but are either"
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+ echo "not yet configured or are configured for an architecture"
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+ echo "different than that specified by TARGET_ARCH, this script"
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+ echo "will attempt to 'fix' the kernel headers and make them"
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+ echo "suitable for use by uClibc. This fixing process may fail."
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+ echo "It is therefore best to always provide kernel headers that"
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+ echo "are already configured for the selected architecture."
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+ echo ""
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+ echo "Most Linux distributions provide 'kernel-headers' packages"
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+ echo "that are well suited for use by uClibc."
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+ echo ""
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+ echo ""
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+ exit 1;
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+}
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+
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+HAS_MMU="y";
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+while [ "$1" ]; do
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+ case $1 in
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+ -k ) shift; if [ "$1" ]; then KERNEL_SOURCE=$1; shift; else usage; fi; ;;
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+ -t ) shift; if [ "$1" ]; then TARGET_ARCH=$1; shift; else usage; fi; ;;
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+ -n ) shift; if [ "$1" ]; then HAS_MMU="n"; shift; else usage; fi; ;;
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+ -* ) usage; ;;
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+ * ) usage; ;;
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+ esac;
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+done;
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+
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+if [ ! -d "$KERNEL_SOURCE" ]; then
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+ echo "$KERNEL_SOURCE is not a directory";
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+ exit 1;
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+fi;
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+
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+if [ ! -f "$KERNEL_SOURCE/include/linux/version.h" ]; then
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+ echo "The file $KERNEL_SOURCE/include/linux/version.h is missing\!";
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+ echo "Perhaps you forgot to configure your kernel source?"
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+ exit 1;
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+fi;
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+
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+KVER=`gcc -I$KERNEL_SOURCE/include -E -dM $KERNEL_SOURCE/include/linux/version.h | grep UTS_RELEASE | awk '{ print $3 }' | sed 's/\"//g'`
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+
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+if [ -z "$KVER" ] ; then
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+ echo "Unable to determine kernel version."
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+ echo "Perhaps your kernel source tree is broken?"
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+ exit 1;
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+fi;
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+
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+
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+echo -e "\n"
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+echo "Using kernel headers from $KVER for architecture '$TARGET_ARCH'"
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+echo -e "\tprovided in directory $KERNEL_SOURCE"
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+echo -e "\n"
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+
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+# Create a symlink to include/asm
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+rm -f include/asm
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+if [ ! -L "$KERNEL_SOURCE/include/asm" ]; then
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+ echo "";
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+ echo "The symlink $KERNEL_SOURCE/include/asm is missing\!";
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+ echo "Perhaps you forgot to configure your kernel source?";
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+ echo "You really should configure your kernel source tree so I";
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+ echo "do not have to try and guess about this sort of thing.";
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+ echo ""
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+ echo "Attempting to guess a usable value....";
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+ echo ""
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+ sleep 1;
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+
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+ if [ "$TARGET_ARCH" = "powerpc" ];then
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+ set -x;
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+ ln -fs $KERNEL_SOURCE/include/asm-ppc include/asm;
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+ unset -x;
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+ elif [ "$TARGET_ARCH" = "mips" ];then
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+ set -x;
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+ ln -fs $KERNEL_SOURCE/include/asm-mips include/asm;
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+ unset -x;
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+ elif [ "$TARGET_ARCH" = "arm" ];then
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+ set -x;
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+ ln -fs $KERNEL_SOURCE/include/asm-arm include/asm;
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+ unset -x;
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+ if [ ! -L $KERNEL_SOURCE/include/asm-arm/proc ] ; then
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+ if [ ! -L proc ] ; then
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+ (cd include/asm;
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+ ln -fs proc-armv proc;
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+ ln -fs arch-ebsa285 arch);
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+ fi
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+ fi;
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+ elif [ "$TARGET_ARCH" = "mipsel" ];then
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+ set -x;
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+ ln -fs $KERNEL_SOURCE/include/asm-mips include/asm;
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+ unset -x;
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+ elif [ "$TARGET_ARCH)" = "cris" ]; then
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+ set -x;
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+ ln -fs $KERNEL_SOURCE/include/asm-cris include/asm;
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+ unset -x;
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+ elif [ "$HAS_MMU" != "y" ]; then
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+ if [ -d $KERNEL_SOURCE/include/asm-${TARGET_ARCH}nommu ] ; then
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+ set -x;
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+ ln -fs $KERNEL_SOURCE/include/asm-${TARGET_ARCH}nommu include/asm;
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+ unset -x;
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+ else
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+ set -x;
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+ ln -fs $KERNEL_SOURCE/include/asm-$TARGET_ARCH include/asm;
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+ unset -x;
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+ fi;
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+ else
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+ set -x;
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+ ln -fs $KERNEL_SOURCE/include/asm-$TARGET_ARCH include/asm;
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+ unset -x;
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+ fi;
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+else
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+# No guessing required.....
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+ln -fs $KERNEL_SOURCE/include/asm include/asm
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+fi;
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+
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+
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+
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+# Create the include/linux and include/scsi symlinks.
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+rm -f include/linux
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+ln -fs $KERNEL_SOURCE/include/linux include/linux
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+rm -f include/scsi
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+ln -fs $KERNEL_SOURCE/include/scsi include/scsi
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+
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