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