[U-Boot] [PATCH 1/3] common: Add symbol handling for generic lists into Makefile

[Marek Vasut <marex@denx.de>]

Dear Joe Hershberger,

> Hi Marex,
> 
> On Mon, Sep 24, 2012 at 11:04 AM, Marek Vasut <marex@denx.de> wrote:
> > Dear Joe Hershberger,
> 
> [...]
> 
> >> Could you not reuse this complicated logic by defining a make function
> > 
> >> and then call + eval it?  Something like this:
> > Can you elaborate more? I don't quite get it ... :-(
> 
> Consolidate the complicated rule that only differs by target and
> sources into a single place.  I also replaced your duplication of the
> sources in the rule with "$^"

Ok, I get it ... and where do I put this consolidation ?

> >> define list_rule_template
> >> $(1) : $(2)
> >> 
> >>         $(OBJDUMP) -h $^ | \
> >>         sed -n -e 's/.*\(\.u_boot_list[^ ]\+\).*$$/\1/p' | \
> >>         sed 's/\.[^\.]\+$$//' | \
> >>         sed -n ':s /^.\+$$/ { p;s/^\(.*\)\.[^\.]*$$/\1/;b s }' | \
> >>         sed -n 's/\./.#/g;h;s/$$/\a/p;g;s/$$/@/p;g;s/$$/~/p;' | \
> >>         LC_COLLATE=C sort -u | \
> >>         sed 's/#//g' | \
> >>         sed -n -e '/\a$$/ { s/\./_/g;s/\a$$/__start = .;/p; }'\
> >>         
> >>                 -e '/~$$/ { s/\./_/g;s/~$$/__end = .;/p; }'\
> >>                 -e '/@$$/ { s/\(.*\)@$$/*(SORT(\1.*));/p }' >$@
> >> 
> >> endef
> >> ...
> 
> Then you instantiate the rule at each place in the Makefile where you
> 
> need it, passing the target and sources:
> >> $(eval $(call list_rule_template,$(obj)u-boot.lst,$(LIBBOARD) $(LIBS)))
> >> ...
> >> $(eval $(call list_rule_template,$(obj)u-boot-spl.lst,$(LIBS)))
> >> 
> >> > +
> >> > +$(obj)u-boot-spl.lds: $(LDSCRIPT) $(obj)u-boot-spl.lst depend
> >> > 
> >> >         $(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - < $<
> >> >         > $@
> 
> -Joe

Best regards,
Marek Vasut