Add CommonOS variant for sdk
Adds a CommonOS variant for sdk that depends on the os specific
variants and is used to generate a single sdk for multiple OsTypes,
e.g. host linux and android.
At the minute the member types only support a single OsType but the
basic mechanism for managing the CommonOS variant and collating the
variants across all of them is there.
The only visible effect of this change is that the location of the
generated snapshot is changed, it is no longer os specific and instead
is in the same location irrespective of which os it is built for.
A lot of tests needed to be changed to specify "common_os" as the
variant type instead of the specific os type. As that is the same across
all tests it is hard coded in CheckSnapshot method.
Test: m nothing
Bug: 150451422
Change-Id: If36be39b06d6910453649f7c288c2d34f688b2f4
diff --git a/android/arch.go b/android/arch.go
index 73a490d..16c9bdd 100644
--- a/android/arch.go
+++ b/android/arch.go
@@ -607,6 +607,10 @@
Android = NewOsType("android", Device, false)
Fuchsia = NewOsType("fuchsia", Device, false)
+ // A pseudo OSType for a common os variant, which is OSType agnostic and which
+ // has dependencies on all the OS variants.
+ CommonOS = NewOsType("common_os", Generic, false)
+
osArchTypeMap = map[OsType][]ArchType{
Linux: []ArchType{X86, X86_64},
LinuxBionic: []ArchType{X86_64},
@@ -775,12 +779,64 @@
osNames[i] = os.String()
}
- modules := mctx.CreateVariations(osNames...)
- for i, m := range modules {
- m.(Module).base().commonProperties.CompileOS = moduleOSList[i]
- m.(Module).base().setOSProperties(mctx)
+ createCommonOSVariant := base.commonProperties.CreateCommonOSVariant
+ if createCommonOSVariant {
+ // A CommonOS variant was requested so add it to the list of OS's variants to
+ // create. It needs to be added to the end because it needs to depend on the
+ // the other variants in the list returned by CreateVariations(...) and inter
+ // variant dependencies can only be created from a later variant in that list to
+ // an earlier one. That is because variants are always processed in the order in
+ // which they are returned from CreateVariations(...).
+ osNames = append(osNames, CommonOS.Name)
+ moduleOSList = append(moduleOSList, CommonOS)
}
+ modules := mctx.CreateVariations(osNames...)
+ for i, m := range modules {
+ m.base().commonProperties.CompileOS = moduleOSList[i]
+ m.base().setOSProperties(mctx)
+ }
+
+ if createCommonOSVariant {
+ // A CommonOS variant was requested so add dependencies from it (the last one in
+ // the list) to the OS type specific variants.
+ last := len(modules) - 1
+ commonOSVariant := modules[last]
+ commonOSVariant.base().commonProperties.CommonOSVariant = true
+ for _, module := range modules[0:last] {
+ // Ignore modules that are enabled. Note, this will only avoid adding
+ // dependencies on OsType variants that are explicitly disabled in their
+ // properties. The CommonOS variant will still depend on disabled variants
+ // if they are disabled afterwards, e.g. in archMutator if
+ if module.Enabled() {
+ mctx.AddInterVariantDependency(commonOsToOsSpecificVariantTag, commonOSVariant, module)
+ }
+ }
+ }
+}
+
+// Identifies the dependency from CommonOS variant to the os specific variants.
+type commonOSTag struct{ blueprint.BaseDependencyTag }
+
+var commonOsToOsSpecificVariantTag = commonOSTag{}
+
+// Get the OsType specific variants for the current CommonOS variant.
+//
+// The returned list will only contain enabled OsType specific variants of the
+// module referenced in the supplied context. An empty list is returned if there
+// are no enabled variants or the supplied context is not for an CommonOS
+// variant.
+func GetOsSpecificVariantsOfCommonOSVariant(mctx BaseModuleContext) []Module {
+ var variants []Module
+ mctx.VisitDirectDeps(func(m Module) {
+ if mctx.OtherModuleDependencyTag(m) == commonOsToOsSpecificVariantTag {
+ if m.Enabled() {
+ variants = append(variants, m)
+ }
+ }
+ })
+
+ return variants
}
// archMutator splits a module into a variant for each Target requested by the module. Target selection
@@ -821,6 +877,15 @@
}
os := base.commonProperties.CompileOS
+ if os == CommonOS {
+ // Make sure that the target related properties are initialized for the
+ // CommonOS variant.
+ addTargetProperties(module, commonTargetMap[os.Name], nil, true)
+
+ // Do not create arch specific variants for the CommonOS variant.
+ return
+ }
+
osTargets := mctx.Config().Targets[os]
image := base.commonProperties.ImageVariation
// Filter NativeBridge targets unless they are explicitly supported
@@ -881,15 +946,17 @@
modules := mctx.CreateVariations(targetNames...)
for i, m := range modules {
- m.(Module).base().commonProperties.CompileTarget = targets[i]
- m.(Module).base().commonProperties.CompileMultiTargets = multiTargets
- if i == 0 {
- m.(Module).base().commonProperties.CompilePrimary = true
- }
+ addTargetProperties(m, targets[i], multiTargets, i == 0)
m.(Module).base().setArchProperties(mctx)
}
}
+func addTargetProperties(m Module, target Target, multiTargets []Target, primaryTarget bool) {
+ m.base().commonProperties.CompileTarget = target
+ m.base().commonProperties.CompileMultiTargets = multiTargets
+ m.base().commonProperties.CompilePrimary = primaryTarget
+}
+
func decodeMultilib(base *ModuleBase, class OsClass) (multilib, extraMultilib string) {
switch class {
case Device: