Support multilib properties in bp2build
This combines properties among "multilib" and "arch" stanzas in selects generated by bp2build. With this fix, libc_gdtoa may be removed from the denylist. This change also refactors a portion of arch.go, specifically bp2build's arch mutator, adding a number of comments along the way, to hopefully make this code clearer for future readers. Test: mixed_libc.sh Change-Id: If2beea672957cfb1af6760406ba507181ec38f77
This commit is contained in:
Chris Parsons
parent
8d0ed7ebd5
commit
c424b76f76
226
android/arch.go
226
android/arch.go
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@ -1673,13 +1673,144 @@ func decodeMultilibTargets(multilib string, targets []Target, prefer32 bool) ([]
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return buildTargets, nil
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}
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func (m *ModuleBase) getArchPropertySet(propertySet interface{}, archType ArchType) interface{} {
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archString := archType.Field
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for i := range m.archProperties {
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if m.archProperties[i] == nil {
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// Skip over nil properties
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continue
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}
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// Not archProperties are usable; this function looks for properties of a very specific
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// form, and ignores the rest.
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for _, archProperty := range m.archProperties[i] {
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// archPropValue is a property struct, we are looking for the form:
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// `arch: { arm: { key: value, ... }}`
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archPropValue := reflect.ValueOf(archProperty).Elem()
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// Unwrap src so that it should looks like a pointer to `arm: { key: value, ... }`
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src := archPropValue.FieldByName("Arch").Elem()
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// Step into non-nil pointers to structs in the src value.
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if src.Kind() == reflect.Ptr {
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if src.IsNil() {
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continue
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}
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src = src.Elem()
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}
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// Find the requested field (e.g. arm, x86) in the src struct.
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src = src.FieldByName(archString)
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// We only care about structs.
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if !src.IsValid() || src.Kind() != reflect.Struct {
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continue
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}
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// If the value of the field is a struct then step into the
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// BlueprintEmbed field. The special "BlueprintEmbed" name is
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// used by createArchPropTypeDesc to embed the arch properties
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// in the parent struct, so the src arch prop should be in this
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// field.
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//
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// See createArchPropTypeDesc for more details on how Arch-specific
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// module properties are processed from the nested props and written
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// into the module's archProperties.
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src = src.FieldByName("BlueprintEmbed")
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// Clone the destination prop, since we want a unique prop struct per arch.
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propertySetClone := reflect.New(reflect.ValueOf(propertySet).Elem().Type()).Interface()
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// Copy the located property struct into the cloned destination property struct.
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err := proptools.ExtendMatchingProperties([]interface{}{propertySetClone}, src.Interface(), nil, proptools.OrderReplace)
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if err != nil {
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// This is fine, it just means the src struct doesn't match the type of propertySet.
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continue
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}
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return propertySetClone
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}
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}
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// No property set was found specific to the given arch, so return an empty
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// property set.
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return reflect.New(reflect.ValueOf(propertySet).Elem().Type()).Interface()
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}
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// getMultilibPropertySet returns a property set struct matching the type of
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// `propertySet`, containing multilib-specific module properties for the given architecture.
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// If no multilib-specific properties exist for the given architecture, returns an empty property
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// set matching `propertySet`'s type.
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func (m *ModuleBase) getMultilibPropertySet(propertySet interface{}, archType ArchType) interface{} {
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// archType.Multilib is lowercase (for example, lib32) but property struct field is
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// capitalized, such as Lib32, so use strings.Title to capitalize it.
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multiLibString := strings.Title(archType.Multilib)
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for i := range m.archProperties {
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if m.archProperties[i] == nil {
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// Skip over nil properties
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continue
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}
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// Not archProperties are usable; this function looks for properties of a very specific
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// form, and ignores the rest.
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for _, archProperties := range m.archProperties[i] {
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// archPropValue is a property struct, we are looking for the form:
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// `multilib: { lib32: { key: value, ... }}`
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archPropValue := reflect.ValueOf(archProperties).Elem()
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// Unwrap src so that it should looks like a pointer to `lib32: { key: value, ... }`
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src := archPropValue.FieldByName("Multilib").Elem()
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// Step into non-nil pointers to structs in the src value.
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if src.Kind() == reflect.Ptr {
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if src.IsNil() {
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// Ignore nil pointers.
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continue
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}
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src = src.Elem()
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}
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// Find the requested field (e.g. lib32) in the src struct.
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src = src.FieldByName(multiLibString)
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// We only care about valid struct pointers.
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if !src.IsValid() || src.Kind() != reflect.Ptr || src.Elem().Kind() != reflect.Struct {
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continue
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}
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// Get the zero value for the requested property set.
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propertySetClone := reflect.New(reflect.ValueOf(propertySet).Elem().Type()).Interface()
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// Copy the located property struct into the "zero" property set struct.
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err := proptools.ExtendMatchingProperties([]interface{}{propertySetClone}, src.Interface(), nil, proptools.OrderReplace)
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if err != nil {
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// This is fine, it just means the src struct doesn't match.
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continue
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}
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return propertySetClone
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}
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}
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// There were no multilib properties specifically matching the given archtype.
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// Return zeroed value.
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return reflect.New(reflect.ValueOf(propertySet).Elem().Type()).Interface()
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}
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// GetArchProperties returns a map of architectures to the values of the
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// properties of the 'dst' struct that are specific to that architecture.
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// properties of the 'propertySet' struct that are specific to that architecture.
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//
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// For example, passing a struct { Foo bool, Bar string } will return an
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// interface{} that can be type asserted back into the same struct, containing
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// the arch specific property value specified by the module if defined.
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func (m *ModuleBase) GetArchProperties(dst interface{}) map[ArchType]interface{} {
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//
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// Arch-specific properties may come from an arch stanza or a multilib stanza; properties
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// in these stanzas are combined.
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// For example: `arch: { x86: { Foo: ["bar"] } }, multilib: { lib32: {` Foo: ["baz"] } }`
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// will result in `Foo: ["bar", "baz"]` being returned for architecture x86, if the given
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// propertyset contains `Foo []string`.
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func (m *ModuleBase) GetArchProperties(propertySet interface{}) map[ArchType]interface{} {
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// Return value of the arch types to the prop values for that arch.
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archToProp := map[ArchType]interface{}{}
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@ -1688,81 +1819,26 @@ func (m *ModuleBase) GetArchProperties(dst interface{}) map[ArchType]interface{}
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return archToProp
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}
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// archProperties has the type of [][]interface{}. Looks complicated, so let's
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// explain this step by step.
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//
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// Loop over the outer index, which determines the property struct that
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// contains a matching set of properties in dst that we're interested in.
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// For example, BaseCompilerProperties or BaseLinkerProperties.
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for i := range m.archProperties {
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if m.archProperties[i] == nil {
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// Skip over nil arch props
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continue
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// For each arch (x86, arm64, etc.),
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for _, arch := range ArchTypeList() {
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// Find arch-specific properties matching that property set type. For example, any
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// matching properties under `arch { x86 { ... } }`.
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archPropertySet := m.getArchPropertySet(propertySet, arch)
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// Find multilib-specific properties matching that property set type. For example, any
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// matching properties under `multilib { lib32 { ... } }` for x86, as x86 is 32-bit.
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multilibPropertySet := m.getMultilibPropertySet(propertySet, arch)
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// Append the multilibPropertySet to archPropertySet. This combines the
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// arch and multilib properties into a single property struct.
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err := proptools.ExtendMatchingProperties([]interface{}{archPropertySet}, multilibPropertySet, nil, proptools.OrderAppend)
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if err != nil {
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// archPropertySet and multilibPropertySet must be of the same type, or
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// something horrible went wrong.
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panic(err)
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}
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// Non-nil arch prop, let's see if the props match up.
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for _, arch := range ArchTypeList() {
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// e.g X86, Arm
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field := arch.Field
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// If it's not nil, loop over the inner index, which determines the arch variant
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// of the prop type. In an Android.bp file, this is like looping over:
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//
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// arch: { arm: { key: value, ... }, x86: { key: value, ... } }
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for _, archProperties := range m.archProperties[i] {
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archPropValues := reflect.ValueOf(archProperties).Elem()
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// This is the archPropRoot struct. Traverse into the Arch nested struct.
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src := archPropValues.FieldByName("Arch").Elem()
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// Step into non-nil pointers to structs in the src value.
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if src.Kind() == reflect.Ptr {
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if src.IsNil() {
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// Ignore nil pointers.
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continue
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}
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src = src.Elem()
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}
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// Find the requested field (e.g. x86, x86_64) in the src struct.
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src = src.FieldByName(field)
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if !src.IsValid() {
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continue
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}
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// We only care about structs. These are not the droids you are looking for.
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if src.Kind() != reflect.Struct {
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continue
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}
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// If the value of the field is a struct then step into the
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// BlueprintEmbed field. The special "BlueprintEmbed" name is
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// used by createArchPropTypeDesc to embed the arch properties
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// in the parent struct, so the src arch prop should be in this
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// field.
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//
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// See createArchPropTypeDesc for more details on how Arch-specific
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// module properties are processed from the nested props and written
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// into the module's archProperties.
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src = src.FieldByName("BlueprintEmbed")
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// Clone the destination prop, since we want a unique prop struct per arch.
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dstClone := reflect.New(reflect.ValueOf(dst).Elem().Type()).Interface()
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// Copy the located property struct into the cloned destination property struct.
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err := proptools.ExtendMatchingProperties([]interface{}{dstClone}, src.Interface(), nil, proptools.OrderReplace)
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if err != nil {
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// This is fine, it just means the src struct doesn't match.
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continue
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}
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// Found the prop for the arch, you have.
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archToProp[arch] = dstClone
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// Go to the next prop.
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break
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}
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}
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archToProp[arch] = archPropertySet
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}
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return archToProp
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}
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@ -272,7 +272,6 @@ var (
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// Per-module denylist to opt modules out of mixed builds. Such modules will
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// still be generated via bp2build.
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mixedBuildsDisabledList = []string{
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"libc_gdtoa", // ruperts@, cc_library_static, OK for bp2build but undefined symbol: __strtorQ for mixed builds
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"libc_netbsd", // lberki@, cc_library_static, version script assignment of 'LIBC_PRIVATE' to symbol 'SHA1Final' failed: symbol not defined
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"libc_openbsd", // ruperts@, cc_library_static, OK for bp2build but error: duplicate symbol: strcpy for mixed builds
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"libsystemproperties", // cparsons@, cc_library_static, wrong include paths
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@ -744,6 +744,172 @@ cc_library_static {
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name = "static_dep",
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copts = ["-I."],
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linkstatic = True,
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)`},
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},
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{
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description: "cc_library_static 1 multilib srcs and exclude_srcs",
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moduleTypeUnderTest: "cc_library_static",
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moduleTypeUnderTestFactory: cc.LibraryStaticFactory,
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moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryStaticBp2Build,
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depsMutators: []android.RegisterMutatorFunc{cc.RegisterDepsBp2Build},
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filesystem: map[string]string{
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"common.c": "",
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"for-lib32.c": "",
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"not-for-lib32.c": "",
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},
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bp: soongCcLibraryStaticPreamble + `
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cc_library_static {
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name: "foo_static",
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srcs: ["common.c", "not-for-*.c"],
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multilib: {
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lib32: { srcs: ["for-lib32.c"], exclude_srcs: ["not-for-lib32.c"] },
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},
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} `,
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expectedBazelTargets: []string{`cc_library_static(
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name = "foo_static",
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copts = ["-I."],
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linkstatic = True,
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srcs = ["common.c"] + select({
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"//build/bazel/platforms/arch:arm": ["for-lib32.c"],
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"//build/bazel/platforms/arch:x86": ["for-lib32.c"],
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"//conditions:default": ["not-for-lib32.c"],
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}),
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)`},
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},
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{
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description: "cc_library_static 2 multilib srcs and exclude_srcs",
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moduleTypeUnderTest: "cc_library_static",
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moduleTypeUnderTestFactory: cc.LibraryStaticFactory,
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moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryStaticBp2Build,
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depsMutators: []android.RegisterMutatorFunc{cc.RegisterDepsBp2Build},
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filesystem: map[string]string{
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"common.c": "",
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"for-lib32.c": "",
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"for-lib64.c": "",
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"not-for-lib32.c": "",
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"not-for-lib64.c": "",
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},
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bp: soongCcLibraryStaticPreamble + `
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cc_library_static {
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name: "foo_static2",
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srcs: ["common.c", "not-for-*.c"],
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multilib: {
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lib32: { srcs: ["for-lib32.c"], exclude_srcs: ["not-for-lib32.c"] },
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lib64: { srcs: ["for-lib64.c"], exclude_srcs: ["not-for-lib64.c"] },
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},
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} `,
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expectedBazelTargets: []string{`cc_library_static(
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name = "foo_static2",
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copts = ["-I."],
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linkstatic = True,
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srcs = ["common.c"] + select({
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"//build/bazel/platforms/arch:arm": [
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"for-lib32.c",
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"not-for-lib64.c",
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],
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"//build/bazel/platforms/arch:arm64": [
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"for-lib64.c",
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"not-for-lib32.c",
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],
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"//build/bazel/platforms/arch:x86": [
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"for-lib32.c",
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"not-for-lib64.c",
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],
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"//build/bazel/platforms/arch:x86_64": [
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"for-lib64.c",
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"not-for-lib32.c",
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],
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"//conditions:default": [
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"not-for-lib32.c",
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"not-for-lib64.c",
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],
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}),
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)`},
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},
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{
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description: "cc_library_static arch and multilib srcs and exclude_srcs",
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moduleTypeUnderTest: "cc_library_static",
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moduleTypeUnderTestFactory: cc.LibraryStaticFactory,
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moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryStaticBp2Build,
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depsMutators: []android.RegisterMutatorFunc{cc.RegisterDepsBp2Build},
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filesystem: map[string]string{
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"common.c": "",
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"for-arm.c": "",
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"for-arm64.c": "",
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"for-x86.c": "",
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"for-x86_64.c": "",
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"for-lib32.c": "",
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"for-lib64.c": "",
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"not-for-arm.c": "",
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"not-for-arm64.c": "",
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"not-for-x86.c": "",
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"not-for-x86_64.c": "",
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"not-for-lib32.c": "",
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"not-for-lib64.c": "",
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"not-for-everything.c": "",
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},
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bp: soongCcLibraryStaticPreamble + `
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cc_library_static {
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name: "foo_static3",
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srcs: ["common.c", "not-for-*.c"],
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exclude_srcs: ["not-for-everything.c"],
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arch: {
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arm: { srcs: ["for-arm.c"], exclude_srcs: ["not-for-arm.c"] },
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arm64: { srcs: ["for-arm64.c"], exclude_srcs: ["not-for-arm64.c"] },
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x86: { srcs: ["for-x86.c"], exclude_srcs: ["not-for-x86.c"] },
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x86_64: { srcs: ["for-x86_64.c"], exclude_srcs: ["not-for-x86_64.c"] },
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},
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multilib: {
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lib32: { srcs: ["for-lib32.c"], exclude_srcs: ["not-for-lib32.c"] },
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lib64: { srcs: ["for-lib64.c"], exclude_srcs: ["not-for-lib64.c"] },
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},
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}`,
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expectedBazelTargets: []string{`cc_library_static(
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name = "foo_static3",
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copts = ["-I."],
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linkstatic = True,
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srcs = ["common.c"] + select({
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"//build/bazel/platforms/arch:arm": [
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"for-arm.c",
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"for-lib32.c",
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"not-for-arm64.c",
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"not-for-lib64.c",
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"not-for-x86.c",
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"not-for-x86_64.c",
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],
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"//build/bazel/platforms/arch:arm64": [
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"for-arm64.c",
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"for-lib64.c",
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"not-for-arm.c",
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"not-for-lib32.c",
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"not-for-x86.c",
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"not-for-x86_64.c",
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],
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"//build/bazel/platforms/arch:x86": [
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"for-lib32.c",
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"for-x86.c",
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"not-for-arm.c",
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"not-for-arm64.c",
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"not-for-lib64.c",
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"not-for-x86_64.c",
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],
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"//build/bazel/platforms/arch:x86_64": [
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"for-lib64.c",
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"for-x86_64.c",
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"not-for-arm.c",
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"not-for-arm64.c",
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"not-for-lib32.c",
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"not-for-x86.c",
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],
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"//conditions:default": [
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"not-for-arm.c",
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"not-for-arm64.c",
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"not-for-lib32.c",
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"not-for-lib64.c",
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"not-for-x86.c",
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"not-for-x86_64.c",
|
||||
],
|
||||
}),
|
||||
)`},
|
||||
},
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue