1#!/bin/bash 2# Copyright (c) 2010 The Chromium Authors. All rights reserved. 3# Use of this source code is governed by a BSD-style license that can be 4# found in the LICENSE file. 5 6# This program wraps around pkg-config to generate the correct include and 7# library paths when cross-compiling using a sysroot. 8# The assumption is that the sysroot contains the .pc files in usr/lib/pkgconfig 9# and usr/share/pkgconfig (relative to the sysroot) and that they output paths 10# relative to some parent path of the sysroot. 11# This assumption is valid for a range of sysroots, in particular: a 12# LSB-compliant root filesystem mounted at the sysroot, and a board build 13# directory of a Chromium OS chroot. 14 15root="$1" 16if [ -z "$root" ] 17then 18 echo "usage: $0 /path/to/sysroot [pkg-config-arguments] package" >&2 19 exit 1 20fi 21 22rewrite=`dirname $0`/rewrite_dirs.py 23package=${!#} 24 25shift 26config_path=$root/usr/lib/pkgconfig:$root/usr/share/pkgconfig 27set -e 28# Some sysroots, like the Chromium OS ones, may generate paths that are not 29# relative to the sysroot. For example, 30# /path/to/chroot/build/x86-generic/usr/lib/pkgconfig/pkg.pc may have all paths 31# relative to /path/to/chroot (i.e. prefix=/build/x86-generic/usr) instead of 32# relative to /path/to/chroot/build/x86-generic (i.e prefix=/usr). 33# To support this correctly, it's necessary to extract the prefix to strip from 34# pkg-config's |prefix| variable. 35prefix=`PKG_CONFIG_PATH=$config_path pkg-config --variable=prefix "$package" | sed -e 's|/usr$||'` 36result=`PKG_CONFIG_PATH=$config_path pkg-config "$@"` 37echo "$result"| $rewrite --sysroot "$root" --strip-prefix "$prefix" 38