[yocto] native tool is not installed before it is used

[Sridhar Pitchai]

Thanks. that works. but i am confused :)
in the original recipe, i was doing do_autogen "after" configure, assuming do_configure will install all the needed dependencies and i can use those native tools after that. 
but with your solution (do_configure_prepend, which  works),  it gives the impression we are using proto-c-native before proto-c-native is installed. how does the dependencies are ordered?
thanks,Sridhar Pitchai

From: ross.burton at intel.com
Date: Fri, 12 Feb 2016 10:35:10 +0000
Subject: Re: [yocto] native tool is not installed before it is used
To: sridhar.pitchai at outlook.com
CC: yocto at yoctoproject.org


On 12 February 2016 at 06:10, Sridhar Pitchai <sridhar.pitchai at outlook.com> wrote:
I have a recipe, where It need protobuf-c-compiler (natvily) to auto generate files before it can be compiled. i have added protobuf-c-native in the DEPENDS list. but the compilation is failling at do_autogen, compiling the proto-c is not installed in staging_bindir_native.But if  bitbake protobuf-c-native manually and then bitbake the recipe it is working fine. 
That's because DEPENDS = "foo" actually means do_configure[depends] = "foo".  This is so that packages can fetch/unpack/patch whilst their build dependencies are being built.
Instead of adding a new task to run autogen which will run *before* configure and therefore before your dependencies have been build, simply do_configure_prepend() if the operations need to happen before cmake runs.
Ross 		 	   		  
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