1 #!/bin/bash 2 # Copyright (c) 2012 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 # Additional directories containing .pc files may be specified by setting 15 # the PKG_CONFIG_PATH environment variable- these will be prepended to the 16 # generated paths. 17 18 root="$1" 19 shift 20 target_arch="$1" 21 shift 22 23 if [ -z "$root" -o -z "$target_arch" ] 24 then 25 echo "usage: $0 /path/to/sysroot target_arch [pkg-config-arguments] package" >&2 26 exit 1 27 fi 28 29 if [ "$target_arch" = "x64" ] 30 then 31 libpath="lib64" 32 else 33 libpath="lib" 34 fi 35 36 rewrite=`dirname $0`/rewrite_dirs.py 37 package=${!#} 38 39 config_path=$root/usr/$libpath/pkgconfig:$root/usr/share/pkgconfig 40 41 # prepend any paths specified by the environment 42 if [ -n "$PKG_CONFIG_PATH" ] 43 then 44 config_path="$PKG_CONFIG_PATH:$config_path" 45 fi 46 47 set -e 48 # Some sysroots, like the Chromium OS ones, may generate paths that are not 49 # relative to the sysroot. For example, 50 # /path/to/chroot/build/x86-generic/usr/lib/pkgconfig/pkg.pc may have all paths 51 # relative to /path/to/chroot (i.e. prefix=/build/x86-generic/usr) instead of 52 # relative to /path/to/chroot/build/x86-generic (i.e prefix=/usr). 53 # To support this correctly, it's necessary to extract the prefix to strip from 54 # pkg-config's |prefix| variable. 55 prefix=`PKG_CONFIG_PATH=$config_path pkg-config --variable=prefix "$package" | sed -e 's|/usr$||'` 56 result=`PKG_CONFIG_PATH=$config_path pkg-config "$@"` 57 echo "$result"| $rewrite --sysroot "$root" --strip-prefix "$prefix" 58
