Date: Tue, 17 Nov 2015 16:00:21 -0500 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: Support for out-of-tree build On Tue, Nov 17, 2015 at 02:45:58AM +0000, Petr Hosek wrote: > This is the final solution I've converged to. It's a bigger change than the > previous version, but the implementation is actually cleaner. In nutshell, > I've replaced all .sub files with .mk equivalent files which are included > from the Makefile. I'm then filtering out all C object files which have > assembly equivalent. This allowed me to simplify the build rules while we > still support both in-tree and out-of-tree builds. Please let me know what > you think, I'll be happy to iterate on this. What I had in mind was something more like a single fragment for the arch containing something like (example on sh with 3 subarch dimensions, where full arch with subarch is sheb-nofpu-fdpic): %.o: sheb/%.s $(AS_CMD) %.o: sh-nofpu/%.s $(AS_CMD) %.o: sh-fdpic/%.s $(AS_CMD) Even better would be just an ordered list of subarch subdirs that the top-level makefile can interpret: SUBARCH_ASM_DIRS = sheb sh-nofpu sh-fdpic Replacing *.sub with *.mk is not an improvement from my perspective; rather, it's replacing N files which just contained one piece of data (a filename) with N files each coupled with the makefile logic. Rich
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