[PATCH] eal/arm: include rte_config.h upfront to fix ARM arch header selection

[Bruce Richardson]

On Tue, Dec 02, 2025 at 04:08:49PM +0800, luyan wrote:
> From: luyan <luyan at cmss.chinamobile.com>
> 
> Fix incorrect arch header inclusion on ARM by adding rte_config.h before
> architecture judgment.
> 
> Signed-off-by: Yan Lu <luyan at cmss.chinamobile.com>
> ---
>  lib/eal/arm/include/rte_atomic.h   | 2 ++
>  lib/eal/arm/include/rte_cpuflags.h | 2 ++
>  lib/eal/arm/include/rte_cycles.h   | 2 ++
>  lib/eal/arm/include/rte_io.h       | 2 ++
>  lib/eal/arm/include/rte_memcpy.h   | 2 ++
>  lib/eal/arm/include/rte_pause.h    | 2 ++
>  lib/eal/arm/include/rte_prefetch.h | 2 ++
>  7 files changed, 14 insertions(+)
> 
> diff --git a/lib/eal/arm/include/rte_atomic.h b/lib/eal/arm/include/rte_atomic.h
> index 40e14e56f7..c329b18761 100644
> --- a/lib/eal/arm/include/rte_atomic.h
> +++ b/lib/eal/arm/include/rte_atomic.h
> @@ -5,6 +5,8 @@
>  #ifndef _RTE_ATOMIC_ARM_H_
>  #define _RTE_ATOMIC_ARM_H_
>  
> +#include <rte_config.h>
> +
>  #ifdef RTE_ARCH_64
>  #include <rte_atomic_64.h>
>  #else

When building DPDK or building DPDK apps, rte_config.h should already be
included by this point anyway. We pass "-include rte_config.h" as a flag to
the C compiler, meaning it is included first as a header for building each
file. This flag is also included in the pkg-config output, so apps building
against DPDK should get the same behaviour.

/Bruce