120 lines
3.7 KiB
Go
120 lines
3.7 KiB
Go
// Copyright 2016 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cc
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import (
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"path/filepath"
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"github.com/google/blueprint"
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"android/soong/android"
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)
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// Returns the NDK base include path for use with sdk_version current. Usable with -I.
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func getCurrentIncludePath(ctx android.ModuleContext) android.OutputPath {
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return getNdkSysrootBase(ctx).Join(ctx, "usr/include")
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}
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type headerProperies struct {
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// Base directory of the headers being installed. As an example:
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//
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// ndk_headers {
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// name: "foo",
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// from: "include",
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// to: "",
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// srcs: ["include/foo/bar/baz.h"],
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// }
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//
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// Will install $SYSROOT/usr/include/foo/bar/baz.h. If `from` were instead
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// "include/foo", it would have installed $SYSROOT/usr/include/bar/baz.h.
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From string
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// Install path within the sysroot. This is relative to usr/include.
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To string
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// List of headers to install. Glob compatible. Common case is "include/**/*.h".
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Srcs []string
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// Path to the NOTICE file associated with the headers.
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License string
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}
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type headerModule struct {
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android.ModuleBase
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properties headerProperies
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installPaths []string
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licensePath android.ModuleSrcPath
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}
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func (m *headerModule) DepsMutator(ctx android.BottomUpMutatorContext) {
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}
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func (m *headerModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
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if m.properties.License == "" {
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ctx.PropertyErrorf("license", "field is required")
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}
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m.licensePath = android.PathForModuleSrc(ctx, m.properties.License)
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srcFiles := ctx.ExpandSources(m.properties.Srcs, nil)
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for _, header := range srcFiles {
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// Output path is the sysroot base + "usr/include" + to directory + directory component
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// of the file without the leading from directory stripped.
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//
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// Given:
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// sysroot base = "ndk/sysroot"
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// from = "include/foo"
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// to = "bar"
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// header = "include/foo/woodly/doodly.h"
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// output path = "ndk/sysroot/usr/include/bar/woodly/doodly.h"
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// full/platform/path/to/include/foo
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fullFromPath := android.PathForModuleSrc(ctx, m.properties.From)
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// full/platform/path/to/include/foo/woodly
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headerDir := filepath.Dir(header.String())
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// woodly
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strippedHeaderDir, err := filepath.Rel(fullFromPath.String(), headerDir)
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if err != nil {
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ctx.ModuleErrorf("filepath.Rel(%q, %q) failed: %s", headerDir,
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fullFromPath.String(), err)
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}
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// full/platform/path/to/sysroot/usr/include/bar/woodly
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installDir := getCurrentIncludePath(ctx).Join(ctx, m.properties.To, strippedHeaderDir)
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// full/platform/path/to/sysroot/usr/include/bar/woodly/doodly.h
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installPath := ctx.InstallFile(installDir, header)
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m.installPaths = append(m.installPaths, installPath.String())
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}
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if len(m.installPaths) == 0 {
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ctx.ModuleErrorf("srcs %q matched zero files", m.properties.Srcs)
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}
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}
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func ndkHeadersFactory() (blueprint.Module, []interface{}) {
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module := &headerModule{}
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// Host module rather than device module because device module install steps
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// do not get run when embedded in make. We're not any of the existing
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// module types that can be exposed via the Android.mk exporter, so just use
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// a host module.
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return android.InitAndroidArchModule(module, android.HostSupportedNoCross,
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android.MultilibFirst, &module.properties)
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}
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