1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0-only 3 4# Create an autoksyms.h header file from the list of all module's needed symbols 5# as recorded on the second line of *.mod files and the user-provided symbol 6# whitelist. 7 8set -e 9 10output_file="$1" 11 12# Use "make V=1" to debug this script. 13case "$KBUILD_VERBOSE" in 14*1*) 15 set -x 16 ;; 17esac 18 19# We need access to CONFIG_ symbols 20. include/config/auto.conf 21 22ksym_wl=/dev/null 23if [ -n "$CONFIG_UNUSED_KSYMS_WHITELIST" ]; then 24 # Use 'eval' to expand the whitelist path and check if it is relative 25 eval ksym_wl="$CONFIG_UNUSED_KSYMS_WHITELIST" 26 [ "${ksym_wl}" != "${ksym_wl#/}" ] || ksym_wl="$abs_srctree/$ksym_wl" 27 if [ ! -f "$ksym_wl" ] || [ ! -r "$ksym_wl" ]; then 28 echo "ERROR: '$ksym_wl' whitelist file not found" >&2 29 exit 1 30 fi 31fi 32 33# Generate a new ksym list file with symbols needed by the current 34# set of modules. 35cat > "$output_file" << EOT 36/* 37 * Automatically generated file; DO NOT EDIT. 38 */ 39 40EOT 41 42[ -f modules.order ] && modlist=modules.order || modlist=/dev/null 43sed 's/ko$/mod/' $modlist | 44xargs -n1 sed -n -e '2{s/ /\n/g;/^$/!p;}' -- | 45cat - "$ksym_wl" | 46sort -u | 47sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$output_file" 48 49# Special case for modversions (see modpost.c) 50if [ -n "$CONFIG_MODVERSIONS" ]; then 51 echo "#define __KSYM_module_layout 1" >> "$output_file" 52fi 53