using go for condition in Srcs[] for cc_prebuilt_library_static

[Aditya Singh Rathore]

I have requirement of using different "src" for my prebuilt static library, based on some condition other than Target_arch.

I have used go file as below

func init() {
android.RegisterModuleType("native_cc_prebuilt_defaults", genNativeDefaultsFactory)
}

func genNativeDefaultsFactory() android.Module{

    module := cc.DefaultsFactory()

    android.AddLoadHook(module, loadBuildConfigCCNative)

    return module

}

func loadBuildConfigCCNative(ctx android.LoadHookContext){

    type props struct {

        Srcs []string

    }

    p := &props{}

    var srcs  []string

    

    conditinal := getEnv(PRODUCT_CONFIG) 

   

    if condition{

        if envIsContains(target_arch, "arm64") {

            srcs = append(srcs ,"path1/arm64/lib.a")

        } else if envIsContains(target_arch, "arm"){

            srcs = append(srcs ,"path1/arm/lib_32.a")

        }

    }else {

        if envIsContains(target_arch, "arm64") {

            srcs = append(srcs ,"path2/arm64/libiqinative.a")

        } else if envIsContains(target_arch, "arm"){

            srcs = append(srcs ,"path2/arm/libiqinative.a")

        }

    }

    p.Srcs = srcs

    ctx.AppendProperties(p)

}

func envIsContains(key1 string, key2 string) bool {

    contained, _ := regexp.MatchString(key2, key1)

    return contained

}


Android.bp

native_cc_prebuilt_defaults{

    name: "my_lib_defaults",

}

 cc_prebuilt_library_static { 

    name : "my_lib",

    compile_multilib: "both",  

    defaults: ["my_lib_defaults"],    

 } 

But when I use "my_lib"

in some other module like below (in some go file for module "libAPVE")

staticLibs = append(staticLibs, "my_lib")

I am recieving following error "Requesting an invalid path" upon building :

internal error: panic in GenerateBuildActions for module "libAPVE" variant "android_arm_armv8-a_cortex-a53_core_shared"

Requesting an invalid path

goroutine 1187053 [running]:

github.com/google/blueprint.newPanicErrorf(0xafad80, 0xcf1780, 0xc02f1b88c0, 0x6e, 0x0, 0x0, 0x0, 0x0, 0x0)

    /workspace/android/build/blueprint/context.go:3566 +0x7b

github.com/google/blueprint.(*Context).generateModuleBuildActions.func2.1.1(0xc051976000, 0xc03d5e9ba0)

    /workspace/android/build/blueprint/context.go:2308 +0x39f

panic(0xafad80, 0xcf1780)

    prebuilts/go/linux-x86/src/runtime/panic.go:522 +0x1b5

android/soong/android.OptionalPath.Path(...)

    /workspace/android/build/soong/android/paths.go:180

android/soong/cc.orderStaticModuleDeps(0xc04f88ad80, 0xc007264ac0, 0x4, 0x4, 0xc0357a1480, 0xb, 0x10, 0x7f7cee6ca118, 0x0, 0x0)

    /workspace/android/build/soong/cc/cc.go:919 +0x63e

android/soong/cc.(*Module).depsToPaths(0xc04f88ad80, 0xd359e0, 0xc0980af710, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)

    /workspace/android/build/soong/cc/cc.go:1892 +0x1eb

android/soong/cc.(*Module).GenerateAndroidBuildActions(0xc04f88ad80, 0xd357a0, 0xc037254820)

    /workspace/android/build/soong/cc/cc.go:946 +0xcb

android/soong/android.(*ModuleBase).GenerateBuildActions(0xc04f88ad80, 0xd33700, 0xc03d5e9ba0)

    /workspace/android/build/soong/android/module.go:887 +0x706

github.com/google/blueprint.(*Context).generateModuleBuildActions.func2.1(0xc051976000, 0xc03d5e9ba0)

    /workspace/android/build/blueprint/context.go:2312 +0x80

github.com/google/blueprint.(*Context).generateModuleBuildActions.func2(0xc051976000, 0x0)

    /workspace/android/build/blueprint/context.go:2313 +0x339

github.com/google/blueprint.(*Context).parallelVisit.func1.1(0xc087c32ec0, 0xc051976000, 0xc0007c6480, 0xc0007c6300)

    /workspace/android/build/blueprint/context.go:1718 +0x30

created by github.com/google/blueprint.(*Context).parallelVisit.func1

    / workspace /android/build/blueprint/context.go:1717 +0x124

[Aditya Singh Rathore]

After further debugging , it looks like p.Srcs is not getting reflected to srcs for ""my_lib""

any help or hint , would be helpful