Re: [PATCH 5/5] scripts: imx: Do not include autoconf.h

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On Mon, Sep 03, 2018 at 12:57:15PM +0200, Marcin Niestroj wrote:
> All required defines are passed with command line -D options, so there
> is no need to include full autoconf.h header. Additionally there were
> compile time warnings printed when passed variables (CONFIG_HABV*) had
> embedded environment variables, because macros in autoconf.h were
> redefining these passed as command line arguments (-include is
> processed later than -D option).
> 
> Remove including autoconf.h header, so CONFIG_HABV* macros are only
> defined with command line arguments, properly expanding embedded
> variables.
> 
> Signed-off-by: Marcin Niestroj <m.niestroj@xxxxxxxxxxxxxxxx>
> ---
> Changes rfc -> v1: new patch
> 
>  scripts/Makefile.lib | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> index 3b1308605..c254b5b79 100644
> --- a/scripts/Makefile.lib
> +++ b/scripts/Makefile.lib
> @@ -433,7 +433,6 @@ cmd_imximage_S_dcd=						\
>  
>  imxcfg_cpp_flags  = -Wp,-MD,$(depfile) -nostdinc -x assembler-with-cpp \
>        -I $(srctree)/include -I $(srctree)/arch/arm/mach-imx/include \
> -      -include include/generated/autoconf.h \
>        -DCONFIG_HABV3_SRK_PEM=\"$(CONFIG_HABV3_SRK_PEM)\" \
>        -DCONFIG_HABV3_CSF_CRT_DER=\"$(CONFIG_HABV3_CSF_CRT_DER)\" \
>        -DCONFIG_HABV3_IMG_CRT_DER=\"$(CONFIG_HABV3_IMG_CRT_DER)\" \

the inclusion of autoconf.h is there so that we can use the CONFIG_*
macros. See for example rch/arm/boards/tqma53/flash-header.imxcfg:36

#ifdef CONFIG_MACH_TQMA53_1GB_RAM

What we can do instead is replace the -include with "-I
$(objtree)/include" so that we can do a "#include
<generated/autoconf.h>" in arch/arm/boards/tqma53/flash-header.imxcfg.
Would that be fine aswell?

Sascha

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