[yocto] Building clang with Yocto

[Liviu Gheorghisan]

Hello Yu, Jim

I think you can get the clang executable into the SDK installer script 
with something like this:

1. Add this dependency in nativesdk-packagegroup-sdk-host.bb:
*RDEPENDS_${PN} += "nativesdk-<name-of-clang-recipe>"*

2. In the clang recipe add this install() overwrite for the nativesdk 
class - this will install it into the SDK sysroot:
*do_install_class-nativesdk() {
     install -d ${D}${bindir}
     install -m 0755 clang ${D}${bindir}
}*

3. The clang recipe (I don't know if it has a recipe of its own, or it's 
part of the LLVM recipe) should also inherit from nativesdk:
*BBCLASSEXTEND = "nativesdk"*

Basically this should get your clang executable inside the SDK 
installer. Sure you can add more executables related to clang (like the 
llvm-related ones) in the install_class-nativesdk() function.

- Liviu Gheorghisan

On 12/09/2014 04:36 AM, Yu, Chan KitX wrote:
> I **think** I'm just inches away from success. I think I just need to invoke a correct install command somewhere in the do_install function but so far I have not managed to do so. But right now the alternative way of jamming the compiler into the SDK sounds tempting to me.
>
> -----Original Message-----
> From: Yu, Chan KitX
> Sent: Tuesday, December 09, 2014 9:19 AM
> To: 'Jim Rafert'; yocto at yoctoproject.org
> Subject: RE: Building clang with Yocto
>
> Hi Jim,
>
> How did you jam the clang compiler into the SDK tarball?
>
> Chan Kit
>
> -----Original Message-----
> From: Jim Rafert [mailto:jimr at spectralogic.com]
> Sent: Tuesday, December 09, 2014 1:48 AM
> To: yocto at yoctoproject.org; Yu, Chan KitX
> Subject: Building clang with Yocto
>
> Hello Chan,
>
> I have been working to a similar goal, to include clang in the toolchain to be used for compiling applications to run on the target.  Using clang to compile the OS and kernel are not required or  desired by me.
>
> You may get some insight from the thread I started in November on the subject.  I'm not sure that this contains all of the posts on the subject. You may want to search the archive for November.
>
> I have not been successful yet in getting clang actually packaged in the toolchain, in the Yocto build,  but at least it builds.  I have a postbuild script that takes the built clang compiler from the work directory and jams it into the SDK tarball that is embedded in the sdk install script.
>
> -Jim-
>
>
> ________________________________________
> From: yocto-bounces at yoctoproject.org [yocto-bounces at yoctoproject.org] on behalf of yocto-request at yoctoproject.org [yocto-request at yoctoproject.org]
> Sent: Monday, December 08, 2014 2:56 AM
> To: yocto at yoctoproject.org
> Subject: yocto Digest, Vol 51, Issue 26
>
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