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Add target_compatible_with for compile_multilib

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For explicit values of compile_multilib (e.g. 32 or 64), add an
incompatibilty constraint for the arches that do not have the correct
bitness.

Test: go test ./bp2build
Bug: 299135307
Change-Id: I4cd997de6804a5c6d89086d740f773936db1cab9
This commit is contained in:
Spandan Das
2023-09-05 19:31:12 +00:00
parent ca22dfb5d1
commit e1cb14b240
2 changed files with 87 additions and 0 deletions
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32
android/module.go
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@@ -1418,10 +1418,42 @@ func (attrs *CommonAttributes) fillCommonBp2BuildModuleAttrs(ctx *topDownMutator
moduleEnableConstraints := bazel.LabelListAttribute{}
moduleEnableConstraints.Append(platformEnabledAttribute)
moduleEnableConstraints.Append(productConfigEnabledAttribute)
addCompatibilityConstraintForCompileMultilib(ctx, &moduleEnableConstraints)
return constraintAttributes{Target_compatible_with: moduleEnableConstraints}
}
var (
incompatible = bazel.LabelList{[]bazel.Label{{Label: "@platforms//:incompatible"}}, nil}
)
// If compile_mulitilib is set to
// 1. 32: Add an incompatibility constraint for non-32 arches
// 1. 64: Add an incompatibility constraint for non-64 arches
func addCompatibilityConstraintForCompileMultilib(ctx *topDownMutatorContext, enabled *bazel.LabelListAttribute) {
mod := ctx.Module().base()
multilib, _ := decodeMultilib(mod, mod.commonProperties.CompileOS, ctx.Config().IgnorePrefer32OnDevice())
switch multilib {
case "32":
// Add an incompatibility constraint for all known 64-bit arches
enabled.SetSelectValue(bazel.ArchConfigurationAxis, "arm64", incompatible)
enabled.SetSelectValue(bazel.ArchConfigurationAxis, "x86_64", incompatible)
enabled.SetSelectValue(bazel.ArchConfigurationAxis, "riscv64", incompatible)
case "64":
// Add an incompatibility constraint for all known 32-bit arches
enabled.SetSelectValue(bazel.ArchConfigurationAxis, "arm", incompatible)
enabled.SetSelectValue(bazel.ArchConfigurationAxis, "x86", incompatible)
case "both":
// Do nothing: "both" is trivially compatible with 32-bit and 64-bit
// The top level rule (e.g. apex/partition) will be responsible for building this module in both variants via an
// outgoing_transition.
default: // e.g. first, common
// TODO - b/299135307: Add bp2build support for these properties.
}
}
// Check product variables for `enabled: true` flag override.
// Returns a list of the constraint_value targets who enable this override.
func productVariableConfigEnableAttribute(ctx *topDownMutatorContext) bazel.LabelListAttribute {