#!/bin/bash
# Genkernel v3

GK_V="3.0.1_beta9"
TEMP="/tmp"

small_die() {
  echo $1
  exit 1
}

source /etc/genkernel.conf || small_die "could not read /etc/genkernel.conf"
source ${GK_BIN}/gen_funcs.sh || small_die "could not read ${GK_BIN}/gen_funcs.sh"
clear_log
source ${GK_BIN}/gen_cmdline.sh || gen_die "could not read ${GK_BIN}/gen_cmdline.sh"
source ${GK_BIN}/gen_arch.sh || gen_die "could not read ${GK_BIN}/gen_arch.sh"
source ${GK_BIN}/gen_determineargs.sh || gen_die "could not read ${GK_BIN}/gen_determineargs.sh"
source ${GK_BIN}/gen_compile.sh || gen_die "could not read ${GK_BIN}/gen_compile.sh"
source ${GK_BIN}/gen_configkernel.sh || gen_die "could not read ${GK_BIN}/gen_configkernel.sh"
source ${GK_BIN}/gen_initrd.sh || gen_die "could not read ${GK_BIN}/gen_initrd.sh"
source ${GK_BIN}/gen_moddeps.sh || gen_die "could not read ${GK_BIN}/gen_moddeps.sh"
source ${GK_BIN}/gen_package.sh || gen_die "could not read ${GK_BIN}/gen_package.sh"

BUILD_ALL=0
BUILD_KERNEL=0
BUILD_INITRD=0

# Parse all command line options, and load into memory
parse_cmdline $*

if [ "${BUILD_ALL}" -eq 0 -a "${BUILD_KERNEL}" -eq 0 -a "${BUILD_INITRD}" -eq 0 ]
then
	usage
	exit 1
fi

print_info 1 "GenKernel v${GK_V}" 1 0

# Set ${ARCH}
get_official_arch

# Read arch-specific config
source ${ARCH_CONFIG} || gen_die "could not read ${ARCH_CONFIG}"
source ${GK_SHARE}/${ARCH}/modules_load || gen_die "could not read ${GK_SHARE}/${ARCH}/modules_load"

# Based on genkernel.conf, arch-specific configs, and commandline options,
# get the real args for use.
determine_real_args

print_info 1 "ARCH: ${ARCH}"
print_info 1 "KERNEL VER: ${KV}"

if ! has_loop
then
	print_info 1 "Your kernel does not appear to have loop device support. "
	print_info 1 "Please 'modprobe loop' if it is a module before running genkernel"
	gen_die "----Load loop support----"
fi

# Configure kernel
config_kernel

# Make deps
compile_dep

# Compile kernel
compile_kernel

# Compile modules
compile_modules

print_info 1 "Copying config for successful build to /etc/kernels/kernel-config-${ARCH}-${KV}"
[ ! -e "/etc/kernels" ] && mkdir -p /etc/kernels
cp "${KERNEL_DIR}/.config" "/etc/kernels/kernel-config-${ARCH}-${KV}"

# Compile dietlibc
if [ "${USE_DIETLIBC}" = "1" ]
then
	compile_dietlibc
fi

# Compile Busybox
compile_busybox

# Only compile insmod if we're installing modules onto the initrd
if [ "${NOINITRDMODULES}" = "" ]
then
	if [ "${PAT}" -gt "4" ]
	then
		# Compile module-init-tools
		compile_module_init_tools
	else
		compile_modutils
	fi
fi

compile_devfsd

# Create initrd
create_initrd

if [ "${MINKERNPACKAGE}" != "" ]
then
	gen_minkernpackage
fi

print_info 1 " "
print_info 1 " "
print_info 1 "Kernel compiled successfully!"
print_info 1 "Required Kernel Params:"
print_info 1 "  : root=/dev/ram0 init=/linuxrc real_root=/dev/\$ROOT"
print_info 1 "    where \$ROOT is the devicenode for your root partition as"
print_info 1 "    you should have specified in /etc/fstab"
print_info 1 ""
print_info 1 "You MUST tell your bootloader to use the generated initrd"
print_info 1 ""
print_info 1 "Recommended Kernel Params:"
print_info 1 "  : vga=0x317 splash=verbose"
print_info 1 ""
print_info 1 "Do NOT report kernel bugs (configs included) as genkernel bugs."
print_info 1 "Make sure you have the latest genkernel before reporting bugs"
print_info 1 ""
print_info 1 "For more info see /usr/share/genkernel/README"