kbuild: split adjust_autoksyms.sh in two parts

#!/bin/sh

# SPDX-License-Identifier: GPL-2.0-only

# Script to create/update include/generated/autoksyms.h and dependency files

# Script to update include/generated/autoksyms.h and dependency files

#

# Copyright:	(C) 2016  Linaro Limited

# Created by:	Nicolas Pitre, January 2016

#

# Create/update the include/generated/autoksyms.h file from the list

# of all module's needed symbols as recorded on the second line of *.mod files.

# Update the include/generated/autoksyms.h file.

#

# For each symbol being added or removed, the corresponding dependency

# file's timestamp is updated to force a rebuild of the affected source

# We need access to CONFIG_ symbols

. include/config/auto.conf

ksym_wl=/dev/null

if [ -n "$CONFIG_UNUSED_KSYMS_WHITELIST" ]; then

	# Use 'eval' to expand the whitelist path and check if it is relative

	eval ksym_wl="$CONFIG_UNUSED_KSYMS_WHITELIST"

	[ "${ksym_wl}" != "${ksym_wl#/}" ] || ksym_wl="$abs_srctree/$ksym_wl"

	if [ ! -f "$ksym_wl" ] || [ ! -r "$ksym_wl" ]; then

		echo "ERROR: '$ksym_wl' whitelist file not found" >&2

		exit 1

	fi

fi

# Generate a new ksym list file with symbols needed by the current

# set of modules.

cat > "$new_ksyms_file" << EOT

/*

 * Automatically generated file; DO NOT EDIT.

 */

EOT

sed 's/ko$/mod/' modules.order |

xargs -n1 sed -n -e '2{s/ /\n/g;/^$/!p;}' -- |

cat - "$ksym_wl" |

sort -u |

sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$new_ksyms_file"

# Special case for modversions (see modpost.c)

if [ -n "$CONFIG_MODVERSIONS" ]; then

	echo "#define __KSYM_module_layout 1" >> "$new_ksyms_file"

fi

# Generate a new symbol list file

$CONFIG_SHELL $srctree/scripts/gen_autoksyms.sh "$new_ksyms_file"

# Extract changes between old and new list and touch corresponding

# dependency files.

#!/bin/sh

# SPDX-License-Identifier: GPL-2.0-only

# Create an autoksyms.h header file from the list of all module's needed symbols

# as recorded on the second line of *.mod files and the user-provided symbol

# whitelist.

set -e

output_file="$1"

# Use "make V=1" to debug this script.

case "$KBUILD_VERBOSE" in

*1*)

	set -x

	;;

esac

# We need access to CONFIG_ symbols

. include/config/auto.conf

ksym_wl=/dev/null

if [ -n "$CONFIG_UNUSED_KSYMS_WHITELIST" ]; then

	# Use 'eval' to expand the whitelist path and check if it is relative

	eval ksym_wl="$CONFIG_UNUSED_KSYMS_WHITELIST"

	[ "${ksym_wl}" != "${ksym_wl#/}" ] || ksym_wl="$abs_srctree/$ksym_wl"

	if [ ! -f "$ksym_wl" ] || [ ! -r "$ksym_wl" ]; then

		echo "ERROR: '$ksym_wl' whitelist file not found" >&2

		exit 1

	fi

fi

# Generate a new ksym list file with symbols needed by the current

# set of modules.

cat > "$output_file" << EOT

/*

 * Automatically generated file; DO NOT EDIT.

 */

EOT

sed 's/ko$/mod/' modules.order |

xargs -n1 sed -n -e '2{s/ /\n/g;/^$/!p;}' -- |

cat - "$ksym_wl" |

sort -u |

sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$output_file"

# Special case for modversions (see modpost.c)

if [ -n "$CONFIG_MODVERSIONS" ]; then

	echo "#define __KSYM_module_layout 1" >> "$output_file"

fi