bp2build: add python_binary_host converter.
This CL adds a simple python_binary_host to native py_binary converter
for standalone modules that don't depend on libs. It also adds support
for the conditional py2/py3 build target based on the version prop.
Test: milestone-2/demo.sh full
Test: bazel query 'kind("py_binary rule", //bionic/...)'
Test: bazel run //bionic/libc/tools:genfunctosyscallnrs
Test: bazel run //bionic/libc/tools:genseccomp
Test: go tests
Fixes: 182236395
Change-Id: Ibe5ec6cd0dc12a61b3a449a8c723d80b891fae42
diff --git a/python/binary.go b/python/binary.go
index 416a7ee..372b8a8 100644
--- a/python/binary.go
+++ b/python/binary.go
@@ -20,10 +20,92 @@
"fmt"
"android/soong/android"
+ "android/soong/bazel"
+
+ "github.com/google/blueprint/proptools"
)
func init() {
android.RegisterModuleType("python_binary_host", PythonBinaryHostFactory)
+ android.RegisterBp2BuildMutator("python_binary_host", PythonBinaryBp2Build)
+}
+
+type bazelPythonBinaryAttributes struct {
+ Main string
+ Srcs bazel.LabelList
+ Data bazel.LabelList
+ Python_version string
+}
+
+type bazelPythonBinary struct {
+ android.BazelTargetModuleBase
+ bazelPythonBinaryAttributes
+}
+
+func BazelPythonBinaryFactory() android.Module {
+ module := &bazelPythonBinary{}
+ module.AddProperties(&module.bazelPythonBinaryAttributes)
+ android.InitBazelTargetModule(module)
+ return module
+}
+
+func (m *bazelPythonBinary) Name() string {
+ return m.BaseModuleName()
+}
+
+func (m *bazelPythonBinary) GenerateAndroidBuildActions(ctx android.ModuleContext) {}
+
+func PythonBinaryBp2Build(ctx android.TopDownMutatorContext) {
+ m, ok := ctx.Module().(*Module)
+ if !ok || !m.ConvertWithBp2build() {
+ return
+ }
+
+ // a Module can be something other than a python_binary_host
+ if ctx.ModuleType() != "python_binary_host" {
+ return
+ }
+
+ var main string
+ for _, propIntf := range m.GetProperties() {
+ if props, ok := propIntf.(*BinaryProperties); ok {
+ // main is optional.
+ if props.Main != nil {
+ main = *props.Main
+ break
+ }
+ }
+ }
+ // TODO(b/182306917): this doesn't fully handle all nested props versioned
+ // by the python version, which would have been handled by the version split
+ // mutator. This is sufficient for very simple python_binary_host modules
+ // under Bionic.
+ py3Enabled := proptools.BoolDefault(m.properties.Version.Py3.Enabled, false)
+ py2Enabled := proptools.BoolDefault(m.properties.Version.Py2.Enabled, false)
+ var python_version string
+ if py3Enabled && py2Enabled {
+ panic(fmt.Errorf(
+ "error for '%s' module: bp2build's python_binary_host converter does not support "+
+ "converting a module that is enabled for both Python 2 and 3 at the same time.", m.Name()))
+ } else if py2Enabled {
+ python_version = "PY2"
+ } else {
+ // do nothing, since python_version defaults to PY3.
+ }
+
+ attrs := &bazelPythonBinaryAttributes{
+ Main: main,
+ Srcs: android.BazelLabelForModuleSrcExcludes(ctx, m.properties.Srcs, m.properties.Exclude_srcs),
+ Data: android.BazelLabelForModuleSrc(ctx, m.properties.Data),
+ Python_version: python_version,
+ }
+
+ props := bazel.BazelTargetModuleProperties{
+ // Use the native py_binary rule.
+ Rule_class: "py_binary",
+ }
+
+ ctx.CreateBazelTargetModule(BazelPythonBinaryFactory, m.Name(), props, attrs)
}
type BinaryProperties struct {
@@ -81,6 +163,8 @@
func PythonBinaryHostFactory() android.Module {
module, _ := NewBinary(android.HostSupported)
+ android.InitBazelModule(module)
+
return module.init()
}