[Buildroot] [PATCH 1/1] package/dtc: fix include guards for older kernel/u-boot

[Arnout Vandecappelle]

On 08/10/2018 12:51, Lothar Felten wrote:
> Patch dtc to accept libfdt include guards with and without leading underscore.
> A compiler warning is added to notify the user.
> 
> Signed-off-by: Lothar Felten <lothar.felten at gmail.com>

 At the Buildroot meeting, we agreed that the warning is OK, so I extended the
commit message and applied to master, thanks.

 Regards,
 Arnout

> ---
>  ...de-guards-for-older-kernel-u-boot-sources.patch | 42 ++++++++++++++++++++++
>  1 file changed, 42 insertions(+)
>  create mode 100644 package/dtc/0001-Fix-include-guards-for-older-kernel-u-boot-sources.patch
> 
> diff --git a/package/dtc/0001-Fix-include-guards-for-older-kernel-u-boot-sources.patch b/package/dtc/0001-Fix-include-guards-for-older-kernel-u-boot-sources.patch
> new file mode 100644
> index 0000000000..40cb0bdb2a
> --- /dev/null
> +++ b/package/dtc/0001-Fix-include-guards-for-older-kernel-u-boot-sources.patch
> @@ -0,0 +1,42 @@
> +From b1f8b84489c96465b63485b884238b61d31ca84d Mon Sep 17 00:00:00 2001
> +From: Lothar Felten <lothar.felten at gmail.com>
> +Date: Mon, 8 Oct 2018 13:29:44 +0200
> +Subject: [PATCH 1/1] Fix include guards for older kernel/u-boot sources
> +
> +Linux kernels before 4.17 and U-Boot versions before 2018.07 use libfdt include guards with leading underscores.
> +Those have been removed in dtc-1.4.7.
> +This patch handles both include guard types and allows the compilation of older Linux kernel and u-boot sources.
> +
> +Signed-off-by: Lothar Felten <lothar.felten at gmail.com>
> +---
> + libfdt/libfdt.h     | 4 ++++
> + libfdt/libfdt_env.h | 4 ++++
> + 2 files changed, 8 insertions(+)
> +
> +diff --git a/libfdt/libfdt.h b/libfdt/libfdt.h
> +index 830b77e..bef4566 100644
> +--- a/libfdt/libfdt.h
> ++++ b/libfdt/libfdt.h
> +@@ -1,3 +1,7 @@
> ++#ifdef _LIBFDT_H
> ++#warning "Please consider updating your kernel and/or u-boot version"
> ++#define LIBFDT_H
> ++#endif
> + #ifndef LIBFDT_H
> + #define LIBFDT_H
> + /*
> +diff --git a/libfdt/libfdt_env.h b/libfdt/libfdt_env.h
> +index eb20538..6a61e6a 100644
> +--- a/libfdt/libfdt_env.h
> ++++ b/libfdt/libfdt_env.h
> +@@ -1,3 +1,7 @@
> ++#ifdef _LIBFDT_ENV_H
> ++#warning "Please consider updating your kernel and/or u-boot version"
> ++#define LIBFDT_ENV_H
> ++#endif
> + #ifndef LIBFDT_ENV_H
> + #define LIBFDT_ENV_H
> + /*
> +-- 
> +2.11.0
> +
>