This is the mail archive of the
mailing list for the eCos project.
On Tue, Aug 20, 2002 at 03:00:26PM +0100, Bart Veer wrote:
> >>>>> "Motoya" == Motoya Kurotsu <email@example.com> writes:
> Motoya> I found the fact that target.ld doesn't always reflect the
> Motoya> update of mlt files. You may not find it while you follow
> Motoya> the normal process like ecosconfig new xxx, ecosdonfig
> Motoya> tree and make. But once you execute make clean and make
> Motoya> again, you will find that target.ld never reflects the
> Motoya> later update of mlt files. The cause is that
> Motoya> target.ld.deps is cleared by make clean and never
> Motoya> reprodued by the next make. I think that it is better to
> Motoya> reflect the latest mlt files to target.ld in any case. The
> Motoya> attachment is my sugestion to fix it. It is only for
> Motoya> vr4300 as an example, but all architecture can be fixed
> Motoya> likewise. If you have any smarter idea or any reason why I
> Motoya> shouldn't do so, please tell me.
> I have not investigated closely, but this does not look quite right to
> me. Your new makefile rule has a target ldscript which will never
> actually be generated, and which will not be declared as phony.
Yes. A target ldscript isn't a file. So strictly speaking, .PHONY may
be required. But this works actually. The trick is perhaps in ecosconfig
although I haven't examined its source code. Since I can see the lines
such like the following in the top level makefile.
build: headers $(PREFIX)/include/pkgconf/ecos.mak
$(MAKE) -r -C hal/mips/xxxx/current ldscript
> Won't you end up rebuilding the linker script every time, irrespective of
> whether or not anything has changed?
Yes, it's what I originally mean. I agree that it is not good idea.
> A possible alternative (untested) would be to list the .ldi files
> explicitly as a dependency, e.g.:
> <PREFIX>/lib/target.ld: <PACKAGE>/src/mips_vr4300.ld $(wildcard <PREFIX>/include/pkgconf/*.ldi)
> The $(wildcard ) means that the rule does not have to know the startup
> type, and may avoid problems during the first build. You could still
> end up doing an unnecessary rebuild if e.g. you change
> mlt_<whatever>_rom.ldi when the linker script is actually using
> mlt_<whatever>_ram.ldi, but that is fairly unlikely.
It looks better. $(wildcard ) seems to be taken care by ecosconfig.
So I think the following is enough.
<PREFIX>/lib/target.ld: <PACKAGE>/src/mips_vr4300.ld <PREFIX>/include/pkgconf/*.ldi
Allied Telesis K. K.