Add library paths and rlink-paths for directories in the sysroot. (try 2)

build/linux/sysroot_ld_path.sh

+#!/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 //')
+        for inc_file in $included_files; do
+          echo $inc_file | grep -qs ^/
+          if [ $? -eq 0 ]; then
+            process_ld_so_conf "$root" "$root$inc_file"
+          else
+            process_ld_so_conf "$root" "$(pwd)/$inc_file"
+          fi
+        done
+        continue
+      fi
+
+      echo "$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
+  if [ $? -eq 0 ]; then
+    for entry in $LD_SO_CONF_D/*.conf; do
+      process_ld_so_conf "$1" "$entry"
+    done | xargs echo
+  fi
+fi