Dan,
Thank you very much for sharing the info/links...
i will refer them....

On Wednesday, December 22, 2021 at 3:39:12 AM UTC+5:30 Dan Willemsen wrote:

> General soong docs: build/soong/README.md 
> <https://android.googlesource.com/platform/build/soong/+/master/README.md>
>
> For genrule properties, there's auto-generated reference docs here 
> <https://ci.android.com/builds/latest/branches/aosp-build-tools/targets/linux/view/genrule.html>
>
> It can also be helpful to look at examples 
> <https://cs.android.com/search?q=file:Android.bp%20%5Egenrule&ss=android%2Fplatform%2Fsuperproject>
>  in 
> AOSP.
>
> - Dan
>
> On Tue, Dec 21, 2021 at 1:11 PM Abhayadev S <[email protected]> wrote:
>
>> thanks Dan and Paulo...
>> i will look in to how i can make use of the genrule.... 
>> do you see any official man page for this... i am kind of lost in the 
>> google !
>>
>> On Wednesday, December 15, 2021 at 1:19:48 AM UTC+5:30 [email protected] 
>> wrote:
>>
>>> Hello,
>>> The $(shell) inside you mk will for sure slow down your build as Dan 
>>> pointed out (sorry I forgot to mention this) I currently have a setup like 
>>> this and Im trying to refactor it,  still trying to find the best solution 
>>> for my use case.
>>> Thanks,
>>> Paul
>>>
>>> On Mon, Dec 13, 2021, 8:41 PM 'Dan Willemsen' via Android Building <
>>> [email protected]> wrote:
>>>
>>>> Embedding build systems into one another is a very complicated issue, 
>>>> and requires deep knowledge of both build systems in order to keep all the 
>>>> functionality of both systems. Given that the Android build attempts to 
>>>> provide safe, fast incremental builds that work on any machine, it gets 
>>>> very difficult to preserve those features while calling out to another 
>>>> build system. If the scripts are simpler (bash/python script that reads a 
>>>> known set of inputs and writes to a know set of outputs, and doesn't use 
>>>> any other tools), then this doesn't get too difficult. But keep in mind 
>>>> that you do need to declare all inputs and outputs, and most tools you use 
>>>> need to be referenced by paths (and also be inputs), not in $PATH. 
>>>> Android.bp has the `genrule` concept that makes this easier.
>>>>
>>>> <this where i need to run the script so that bins will be generated for 
>>>>> Android build to pickup>
>>>>>
>>>>
>>>> Keep in mind that we're not linearly executing Android.mk files -- that 
>>>> only happens in the first minute or two of the build to generate commands 
>>>> for what comes later. So you shouldn't actually be running the script 
>>>> there, but defining some Make logic to run your script later. You may be 
>>>> able to find references to Android.mk files using base_rules.mk and 
>>>> defining rules to build $(LOCAL_BUILT_MODULE), but you could also look 
>>>> into 
>>>> writing Android.bp files with genrules, which makes this simpler and adds 
>>>> some checks for common issues.
>>>>  
>>>>
>>>>> Have you tried using $(shell) ? 
>>>>> RESULT:= $(shell ($(LOCAL_PATH)/yourscript.sh))
>>>>>
>>>>
>>>> Definitely don't do this, it will slow down every build as we serially 
>>>> execute every one of these every time (even if there's nothing to build).
>>>>
>>>> - Dan
>>>>
>>>> On Mon, Dec 13, 2021 at 2:49 PM Paulo Maia <[email protected]> wrote:
>>>>
>>>>> Have you tried using $(shell) ? 
>>>>> RESULT:= $(shell ($(LOCAL_PATH)/yourscript.sh))
>>>>>
>>>>> Also you I think you could put in buiod/core/app_prebuilt_internal.mk 
>>>>> if this is going to be repetitive.
>>>>>
>>>>> BR,
>>>>> Paulo
>>>>>
>>>>> On Monday, November 8, 2021 at 2:14:48 PM UTC-8 [email protected] 
>>>>> wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> I need to run a shell script so that the libs and bins will be 
>>>>>> generated beofre Android can pick them up.
>>>>>>
>>>>>> A structure of the makefile i am trying to comeup is below, not sure 
>>>>>> if this is really possible.. any inputs are appreciated.
>>>>>>
>>>>>> LOCAL_PATH := $(call my-dir)
>>>>>>
>>>>>> <this where i need to run the script so that bins will be generated 
>>>>>> for Android build to pickup>
>>>>>>
>>>>>> include $(CLEAR_VARS)
>>>>>> LOCAL_MODULE        := my_modules
>>>>>> LOCAL_MODULE_OWNER  := Me
>>>>>> LOCAL_MODULE_TAGS   := optional
>>>>>> LOCAL_SRC_FILES     := ./my_bin_001
>>>>>> LOCAL_MODULE_PATH   := $(PRODUCT_OUT)/system/bin
>>>>>> include $(BUILD_PREBUILT)
>>>>>>
>>>>>> i am not sure how can i add my build script which generates the 
>>>>>> my_bin_001
>>>>>> there are several bins its generating and i cant really convert the 
>>>>>> shell script in to a Makefile for practical reasons.
>>>>>>
>>>>>> reagrds,
>>>>>> abhay
>>>>>>
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