blob: 34ed1afa17c1ce004aa461bab258c564b23d91bb [file] [log] [blame]
# 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.
import("//build/config/sysroot.gni")
# Defines a config specifying the result of running pkg-config for the given
# packages. Put the package names you want to query in the "packages" variable
# inside the template invocation.
#
# You can also add defines via the "defines" variable. This can be useful to
# add this to the config to pass defines that the library expects to get by
# users of its headers.
#
# Example:
# pkg_config("mything") {
# packages = [ "mything1", "mything2" ]
# defines = [ "ENABLE_AWESOME" ]
# }
#
# You can also use "extra args" to filter out results (see pkg-config.py):
# extra_args = [ "-v, "foo" ]
# To ignore libs and ldflags (only cflags/defines will be set, which is useful
# when doing manual dynamic linking), set:
# ignore_libs = true
declare_args() {
# A pkg-config wrapper to call instead of trying to find and call the right
# pkg-config directly. Wrappers like this are common in cross-compilation
# environments.
# Leaving it blank defaults to searching PATH for 'pkg-config' and relying on
# the sysroot mechanism to find the right .pc files.
pkg_config = ""
}
pkg_config_script = "//build/config/linux/pkg-config.py"
# Define the args we pass to the pkg-config script for other build files that
# need to invoke it manually.
if (sysroot != "") {
# Pass the sysroot if we're using one (it requires the CPU arch also).
pkg_config_args = [
"-s",
sysroot,
"-a",
current_cpu,
]
} else if (pkg_config != "") {
pkg_config_args = [
"-p",
pkg_config,
]
} else {
pkg_config_args = []
}
template("pkg_config") {
assert(defined(invoker.packages),
"Variable |packages| must be defined to be a list in pkg_config.")
config(target_name) {
args = pkg_config_args + invoker.packages
if (defined(invoker.extra_args)) {
args += invoker.extra_args
}
pkgresult = exec_script(pkg_config_script, args, "value")
include_dirs = pkgresult[0]
cflags = pkgresult[1]
if (!defined(invoker.ignore_libs) || !invoker.ignore_libs) {
libs = pkgresult[2]
lib_dirs = pkgresult[3]
ldflags = pkgresult[4]
}
if (defined(invoker.defines)) {
defines = invoker.defines
}
if (defined(invoker.visibility)) {
visibility = invoker.visibility
}
}
}