1// Copyright 2019 The Android Open Source Project
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package config
16
17import (
18	"strings"
19
20	"android/soong/android"
21	_ "android/soong/cc/config"
22)
23
24var pctx = android.NewPackageContext("android/soong/rust/config")
25
26var (
27	RustDefaultVersion = "1.44.0"
28	RustDefaultBase    = "prebuilts/rust/"
29	DefaultEdition     = "2018"
30	Stdlibs            = []string{
31		"libstd",
32		"libtest",
33	}
34
35	GlobalRustFlags = []string{
36		"--remap-path-prefix $$(pwd)=",
37		"-C codegen-units=1",
38		"-C opt-level=3",
39		"-C relocation-model=pic",
40	}
41
42	deviceGlobalRustFlags = []string{}
43
44	deviceGlobalLinkFlags = []string{
45		"-Bdynamic",
46		"-nostdlib",
47		"-Wl,-z,noexecstack",
48		"-Wl,-z,relro",
49		"-Wl,-z,now",
50		"-Wl,--build-id=md5",
51		"-Wl,--warn-shared-textrel",
52		"-Wl,--fatal-warnings",
53
54		"-Wl,--pack-dyn-relocs=android+relr",
55		"-Wl,--no-undefined",
56		"-Wl,--hash-style=gnu",
57
58		"-B${ccConfig.ClangBin}",
59		"-fuse-ld=lld",
60	}
61)
62
63func init() {
64	pctx.SourcePathVariable("RustDefaultBase", RustDefaultBase)
65	pctx.VariableConfigMethod("HostPrebuiltTag", android.Config.PrebuiltOS)
66
67	pctx.VariableFunc("RustBase", func(ctx android.PackageVarContext) string {
68		if override := ctx.Config().Getenv("RUST_PREBUILTS_BASE"); override != "" {
69			return override
70		}
71		return "${RustDefaultBase}"
72	})
73
74	pctx.VariableFunc("RustVersion", func(ctx android.PackageVarContext) string {
75		if override := ctx.Config().Getenv("RUST_PREBUILTS_VERSION"); override != "" {
76			return override
77		}
78		return RustDefaultVersion
79	})
80
81	pctx.StaticVariable("RustPath", "${RustBase}/${HostPrebuiltTag}/${RustVersion}")
82	pctx.StaticVariable("RustBin", "${RustPath}/bin")
83
84	pctx.ImportAs("ccConfig", "android/soong/cc/config")
85	pctx.StaticVariable("RustLinker", "${ccConfig.ClangBin}/clang++")
86	pctx.StaticVariable("RustLinkerArgs", "")
87
88	pctx.StaticVariable("DeviceGlobalLinkFlags", strings.Join(deviceGlobalLinkFlags, " "))
89
90}
91