[Buildroot] Using global patch dir to patch "host-*" packages from buildroot

[Yann E. MORIN <yann.morin.1998@free.fr>]

Pascal, All,

On 2016-08-23 07:12 +0000, Pascal K spake thusly:
> Hello everyone,
> 
> I tried to upgrade my build system from gcc 4.9 to 6. So far only a few
> patches are needed.
> All of those patches have to be in packages for the host.
> 
> So my question is how to keep those patches out of my clean checkout of
> buildroot?

Patches can only be applied to packages sources, not to Buildroot
itself.

> If I set the global patch dir and put the patch e.g. for ucl-1.03 into this
> dir, the mk file I was about to patch is not found. I am not sure how to
> configure the path to point to the host-ucl-1.03.
> 
> *Here the build error that occurs:*
> 
> >>> host-ucl 1.03 Patching
> 
> Applying 0002-gcc6-build-fix.patch using patch:
> can't find file to patch at input line 3
> Perhaps you used the wrong -p or --strip option?
> The text leading up to this was:
> --------------------------
> |--- a/ucl.mk
> |+++ b/ucl.mk
> --------------------------
> No file to patch.  Skipping patch.
> 1 out of 1 hunk ignored
> Patch failed!  Please fix 0002-gcc6-build-fix.patch!
> 
> 
> *My Patch: *
> --- a/ucl.mk
> +++ b/ucl.mk
> @@ -9,4 +9,7 @@
>  UCL_LICENSE = GPLv2+
>  UCL_LICENSE_FILES = COPYING
> 
> +# Fix ACC conformance test failure for host gcc 6.xx
> +HOST_UCL_CONF_ENV += CPPFLAGS="$(HOST_CPPFLAGS) -std=c90"
> +
>  $(eval $(host-autotools-package))
> 
> *Folder with the patch:*
> ../Develop/EmbeddedLinux/emblx/board/IPETRONIK/common/patches/ucl/
> *Folder to apply the patch to:*
> ../Develop/EmbeddedLinux/emblx/buildroot/package/ucl/
> 
> Any suggestions?

Patch Buildroot itself and send us the patches! ;-)

Regards,
Yann E. MORIN.

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