Handle product_variable asflag for cc_object.
cc_object crtbrand sets product_variable.platform_sdk_version.asflag
and will not compile correctly within mixed builds without it.
Only handles product_variables that expand product variables.
Bug: 181794963
Test: ~/aosp/build/bazel/scripts/milestone-2/demo.sh full
Change-Id: I293fcb18032aa51f63bb7b3de94abd6d1ec38180
diff --git a/android/mutator.go b/android/mutator.go
index 9552aa1..051873b 100644
--- a/android/mutator.go
+++ b/android/mutator.go
@@ -539,7 +539,7 @@
Name: &name,
}
- b := t.CreateModule(factory, &nameProp, attrs).(BazelTargetModule)
+ b := t.createModuleWithoutInheritance(factory, &nameProp, attrs).(BazelTargetModule)
b.SetBazelTargetModuleProperties(bazelProps)
return b
}
@@ -608,6 +608,11 @@
return module
}
+func (t *topDownMutatorContext) createModuleWithoutInheritance(factory ModuleFactory, props ...interface{}) Module {
+ module := t.bp.CreateModule(ModuleFactoryAdaptor(factory), props...).(Module)
+ return module
+}
+
func (b *bottomUpMutatorContext) MutatorName() string {
return b.bp.MutatorName()
}
diff --git a/android/variable.go b/android/variable.go
index 776a5c7..0e886bf 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -446,6 +446,63 @@
}
}
+// ProductConfigContext requires the access to the Module to get product config properties.
+type ProductConfigContext interface {
+ Module() Module
+}
+
+// ProductConfigProperty contains the information for a single property (may be a struct) paired
+// with the appropriate ProductConfigVariable.
+type ProductConfigProperty struct {
+ ProductConfigVariable string
+ Property interface{}
+}
+
+// ProductConfigProperties is a map of property name to a slice of ProductConfigProperty such that
+// all it all product variable-specific versions of a property are easily accessed together
+type ProductConfigProperties map[string][]ProductConfigProperty
+
+// ProductVariableProperties returns a ProductConfigProperties containing only the properties which
+// have been set for the module in the given context.
+func ProductVariableProperties(ctx ProductConfigContext) ProductConfigProperties {
+ module := ctx.Module()
+ moduleBase := module.base()
+
+ productConfigProperties := ProductConfigProperties{}
+
+ if moduleBase.variableProperties == nil {
+ return productConfigProperties
+ }
+
+ variableValues := reflect.ValueOf(moduleBase.variableProperties).Elem().FieldByName("Product_variables")
+ for i := 0; i < variableValues.NumField(); i++ {
+ variableValue := variableValues.Field(i)
+ // Check if any properties were set for the module
+ if variableValue.IsZero() {
+ continue
+ }
+ // e.g. Platform_sdk_version, Unbundled_build, Malloc_not_svelte, etc.
+ productVariableName := variableValues.Type().Field(i).Name
+ for j := 0; j < variableValue.NumField(); j++ {
+ property := variableValue.Field(j)
+ // If the property wasn't set, no need to pass it along
+ if property.IsZero() {
+ continue
+ }
+
+ // e.g. Asflags, Cflags, Enabled, etc.
+ propertyName := variableValue.Type().Field(j).Name
+ productConfigProperties[propertyName] = append(productConfigProperties[propertyName],
+ ProductConfigProperty{
+ ProductConfigVariable: productVariableName,
+ Property: property.Interface(),
+ })
+ }
+ }
+
+ return productConfigProperties
+}
+
func VariableMutator(mctx BottomUpMutatorContext) {
var module Module
var ok bool
diff --git a/bazel/properties.go b/bazel/properties.go
index abdc107..38e32e7 100644
--- a/bazel/properties.go
+++ b/bazel/properties.go
@@ -16,6 +16,7 @@
import (
"fmt"
+ "regexp"
"sort"
)
@@ -31,6 +32,8 @@
const BazelTargetModuleNamePrefix = "__bp2build__"
+var productVariableSubstitutionPattern = regexp.MustCompile("%(d|s)")
+
// Label is used to represent a Bazel compatible Label. Also stores the original bp text to support
// string replacement.
type Label struct {
@@ -144,3 +147,23 @@
panic(fmt.Errorf("Unknown arch: %s", arch))
}
}
+
+// TryVariableSubstitution, replace string substitution formatting within each string in slice with
+// Starlark string.format compatible tag for productVariable.
+func TryVariableSubstitutions(slice []string, productVariable string) ([]string, bool) {
+ ret := make([]string, 0, len(slice))
+ changesMade := false
+ for _, s := range slice {
+ newS, changed := TryVariableSubstitution(s, productVariable)
+ ret = append(ret, newS)
+ changesMade = changesMade || changed
+ }
+ return ret, changesMade
+}
+
+// TryVariableSubstitution, replace string substitution formatting within s with Starlark
+// string.format compatible tag for productVariable.
+func TryVariableSubstitution(s string, productVariable string) (string, bool) {
+ sub := productVariableSubstitutionPattern.ReplaceAllString(s, "{"+productVariable+"}")
+ return sub, s != sub
+}
diff --git a/bp2build/cc_object_conversion_test.go b/bp2build/cc_object_conversion_test.go
index 1c058ba..4620d8d 100644
--- a/bp2build/cc_object_conversion_test.go
+++ b/bp2build/cc_object_conversion_test.go
@@ -209,6 +209,34 @@
)`,
},
},
+ {
+ description: "cc_object with product variable",
+ moduleTypeUnderTest: "cc_object",
+ moduleTypeUnderTestFactory: cc.ObjectFactory,
+ moduleTypeUnderTestBp2BuildMutator: cc.ObjectBp2Build,
+ blueprint: `cc_object {
+ name: "foo",
+ include_build_directory: false,
+ product_variables: {
+ platform_sdk_version: {
+ asflags: ["-DPLATFORM_SDK_VERSION=%d"],
+ },
+ },
+
+ bazel_module: { bp2build_available: true },
+}
+`,
+ expectedBazelTargets: []string{`cc_object(
+ name = "foo",
+ asflags = [
+ "-DPLATFORM_SDK_VERSION={Platform_sdk_version}",
+ ],
+ copts = [
+ "-fno-addrsig",
+ ],
+)`,
+ },
+ },
}
dir := "."
diff --git a/cc/object.go b/cc/object.go
index 6bea28b..a2d369e 100644
--- a/cc/object.go
+++ b/cc/object.go
@@ -106,6 +106,7 @@
Srcs bazel.LabelList
Deps bazel.LabelList
Copts bazel.StringListAttribute
+ Asflags []string
Local_include_dirs []string
}
@@ -150,6 +151,7 @@
var srcs []string
var excludeSrcs []string
var localIncludeDirs []string
+ var asFlags []string
for _, props := range m.compiler.compilerProps() {
if baseCompilerProps, ok := props.(*BaseCompilerProperties); ok {
copts.Value = baseCompilerProps.Cflags
@@ -171,6 +173,23 @@
}
}
+ productVariableProps := android.ProductVariableProperties(ctx)
+ if props, exists := productVariableProps["Asflags"]; exists {
+ // TODO(b/183595873): consider deduplicating handling of product variable properties
+ for _, prop := range props {
+ flags, ok := prop.Property.([]string)
+ if !ok {
+ ctx.ModuleErrorf("Could not convert product variable asflag property")
+ return
+ }
+ // TODO(b/183595873) handle other product variable usages -- as selects?
+ if newFlags, subbed := bazel.TryVariableSubstitutions(flags, prop.ProductConfigVariable); subbed {
+ asFlags = append(asFlags, newFlags...)
+ }
+ }
+ }
+ // TODO(b/183595872) warn/error if we're not handling product variables
+
for arch, p := range m.GetArchProperties(&BaseCompilerProperties{}) {
if cProps, ok := p.(*BaseCompilerProperties); ok {
copts.SetValueForArch(arch.Name, cProps.Cflags)
@@ -182,6 +201,7 @@
Srcs: android.BazelLabelForModuleSrcExcludes(ctx, srcs, excludeSrcs),
Deps: deps,
Copts: copts,
+ Asflags: asFlags,
Local_include_dirs: localIncludeDirs,
}