Change in coreboot[master]: drivers/intel/fsp2_0: Integrate FirmwareVersionInfo.h

[Nico Huber (Code Review)]

Attention is currently required from: Maulik V Vaghela, Paul Menzel, Subrata Banik, Ronak Kanabar, Aamir Bohra.
Nico Huber has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/45905 )

Change subject: drivers/intel/fsp2_0: Integrate FirmwareVersionInfo.h
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Patch Set 12:

(1 comment)

File src/drivers/intel/fsp2_0/Kconfig.debug_blob:

https://review.coreboot.org/c/coreboot/+/45905/comment/a39793da_80597c31 
PS5, Line 46: 	  using new header 'FirmwareVersionInfo.h'.
> hi, i am confused here about the automatic detection how you are proposing here. can you please help me understand method you are suggesting

You can let Make check for the presence of a header file and
then add compilation options for the .c file. The latter can
be tricky because one has to construct the object file's path.
I guess something like this could work:

ifneq($(wildcard $(CONFIG_FSP_HEADER_PATH)/FirmwareVersionInfoHob.h),)

ramstage-y += version_info.c
    $(call src-to-obj,$(dir)/version_info.c): CPPFLAGS_common += -include $(CONFIG_FSP_HEADER_PATH)/FirmwareVersionInfoHob.h -DFSP_VERSION_INFO_1

else ifneq($(wildcard $(CONFIG_FSP_HEADER_PATH)/FirmwareVersionInfo.h),)

ramstage-y += version_info.c
    $(call src-to-obj,$(dir)/version_info.c): CPPFLAGS_common += -include $(CONFIG_FSP_HEADER_PATH)/FirmwareVersionInfo.h -DFSP_VERSION_INFO_2

endif