Thanks, here's what I came up with in case someone is searching some day:
#------------ new section for kbuild .cmd requirement -------------
cpp_build_opts=`cat $(FLAGS)`
# called by existing Makedisk.build gen_symversions
cmd_gensymtypes_cc = $(CPP) -D__GENKSYMS__ $(cpp_build_opts)
$(CC_FLAGS) $< | $(genksyms)
# command to build using g++_
quiet_cmd_cc_o_cc = g++ $(quiet_modtag) $@
cmd_cc_o_cc = g++ $(cpp_build_opts) $(CC_FLAGS) -fno-builtin
-nostdlib -std=c++0x -fno-exceptions -fno-rtti -Wall -c -o $@ $<
ifdef CONFIG_MODVERSIONS
# setup call for build rules
cmd_gen_symversions_cc = $(call gen_symversions,cc)
endif
# multiple items to do on build of .cc file
define rule_cc_o_cc
$(call cmd_and_fixdep,cc_o_cc)
$(call cmd,gen_symversions_cc)
endef
# pattern for compiling the c++ parts (required for cpp file building)
%.o: %.cc $(FLAGS) FORCE
$(info doing [$@])
$(call if_changed_rule,cc_o_cc)
#--------------- end kbuild .cmd requirement build ---------------
On Fri, Feb 2, 2024 at 1:04 AM Nicolas Schier <n.schier@xxxxxx> wrote:
>
> On Thu, Feb 01, 2024 at 09:51:34PM -0800, David F. wrote:
> > Any help would be appreciated on how to create the *.o.cmd file for .cpp files?
>
> Neither tested nor evaluated in-depth:
> You might want to have a look at scripts/Makefile.build and
> scripts/Kbuild.include. If you are able to include the relevant kbuild
> parts in your Makefile, you could try to supply a cmd_cc_o_cc definition
> and use it with if_changed macro.
>
> Kind regards,
> Nicolas
