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| 1 # Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 # Use of this source code is governed by a BSD-style license that can be |
| 3 # found in the LICENSE file. |
| 4 |
| 5 # This template makes a stub for a Linux system library that dynamically loads |
| 6 # it at runtime. |
| 7 |
| 8 # name: Name to use for the value of the --name arg. |
| 9 # output_h/output_cc: Names for the generated header/cc file with no dir. |
| 10 # header: header file to process. Example: "<foo/bar.h>" |
| 11 # functions: List of strings for functions to process. |
| 12 # config: (optional) Label of the config generated by pkgconfig. |
| 13 # bundled_header: (optional) |
| 14 template("generate_library_loader") { |
| 15 output_h = "$root_gen_dir/library_loaders/" + invoker.output_h |
| 16 output_cc = "$root_gen_dir/library_loaders/" + invoker.output_cc |
| 17 |
| 18 action_visibility = ":$target_name" |
| 19 action("${target_name}_loader") { |
| 20 visibility = action_visibility |
| 21 |
| 22 script = "//tools/generate_library_loader/generate_library_loader.py" |
| 23 if (defined(invoker.visibility)) { |
| 24 visibility = invoker.visibility |
| 25 } |
| 26 |
| 27 outputs = [ output_h, output_cc ] |
| 28 |
| 29 args = [ |
| 30 "--name", invoker.name, |
| 31 "--output-h", rebase_path(output_h), |
| 32 "--output-cc", rebase_path(output_cc), |
| 33 "--header", invoker.header, |
| 34 # Note GYP build exposes a per-target variable to control this, which, if |
| 35 # manually set to true, will disable dlopen(). Its not clear this is |
| 36 # needed, so here we just leave off. If this can be done globally, we can |
| 37 # expose one switch for this value, otherwise we need to add a template |
| 38 # param for this. |
| 39 "--link-directly=0", |
| 40 ] |
| 41 if (defined(invoker.bundled_header)) { |
| 42 args += [ "--bundled-header", invoker.bundled_header ] |
| 43 } |
| 44 args += invoker.functions |
| 45 } |
| 46 |
| 47 source_set(target_name) { |
| 48 if (defined(invoker.config)) { |
| 49 direct_dependent_configs = [ invoker.config ] |
| 50 } |
| 51 sources = [ output_h, output_cc ] |
| 52 deps = [ ":${target_name}_loader" ] |
| 53 } |
| 54 } |
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