electron/tools/linux/sysroot_ld_path.sh

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#!/bin/sh
# Copyright (c) 2013 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Reads etc/ld.so.conf and/or etc/ld.so.conf.d/*.conf and returns the
# appropriate linker flags.
#
# sysroot_ld_path.sh /abspath/to/sysroot
#
log_error_and_exit() {
echo $0: $@
exit 1
}
process_entry() {
if [ -z "$1" ] || [ -z "$2" ]; then
log_error_and_exit "bad arguments to process_entry()"
fi
local root="$1"
local localpath="$2"
echo $localpath | grep -qs '^/'
if [ $? -ne 0 ]; then
log_error_and_exit $localpath does not start with /
fi
local entry="$root$localpath"
echo -L$entry
echo -Wl,-rpath-link=$entry
}
process_ld_so_conf() {
if [ -z "$1" ] || [ -z "$2" ]; then
log_error_and_exit "bad arguments to process_ld_so_conf()"
fi
local root="$1"
local ld_so_conf="$2"
# ld.so.conf may include relative include paths. pushd is a bashism.
local saved_pwd=$(pwd)
cd $(dirname "$ld_so_conf")
cat "$ld_so_conf" | \
while read ENTRY; do
echo "$ENTRY" | grep -qs ^include
if [ $? -eq 0 ]; then
local included_files=$(echo "$ENTRY" | sed 's/^include //')
echo "$included_files" | grep -qs ^/
if [ $? -eq 0 ]; then
if ls $root$included_files >/dev/null 2>&1 ; then
for inc_file in $root$included_files; do
process_ld_so_conf "$root" "$inc_file"
done
fi
else
if ls $(pwd)/$included_files >/dev/null 2>&1 ; then
for inc_file in $(pwd)/$included_files; do
process_ld_so_conf "$root" "$inc_file"
done
fi
fi
continue
fi
echo "$ENTRY" | grep -qs ^/
if [ $? -eq 0 ]; then
process_entry "$root" "$ENTRY"
fi
done
# popd is a bashism
cd "$saved_pwd"
}
# Main
if [ $# -ne 1 ]; then
echo Usage $0 /abspath/to/sysroot
exit 1
fi
echo $1 | grep -qs ' '
if [ $? -eq 0 ]; then
log_error_and_exit $1 contains whitespace.
fi
LD_SO_CONF="$1/etc/ld.so.conf"
LD_SO_CONF_D="$1/etc/ld.so.conf.d"
if [ -e "$LD_SO_CONF" ]; then
process_ld_so_conf "$1" "$LD_SO_CONF" | xargs echo
elif [ -e "$LD_SO_CONF_D" ]; then
find "$LD_SO_CONF_D" -maxdepth 1 -name '*.conf' -print -quit > /dev/null
if [ $? -eq 0 ]; then
for entry in $LD_SO_CONF_D/*.conf; do
process_ld_so_conf "$1" "$entry"
done | xargs echo
fi
fi