Re: [PATCH] radix tree test suite: fix mapshift build target

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On Thu, Apr 12, 2018 at 02:15:43PM -0700, Andrew Morton wrote:
> On Thu, 12 Apr 2018 15:05:18 -0600 Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx> wrote:
> 
> > The following commit
> > 
> >   commit c6ce3e2fe3da ("radix tree test suite: Add config option for map
> >   shift")
> > 
> > Introduced a phony makefile target called 'mapshift' that ends up
> > generating the file generated/map-shift.h.  This phony target was then
> > added as a dependency of the top level 'targets' build target, which is
> > what is run when you go to tools/testing/radix-tree and just type 'make'.
> > 
> > Unfortunately, this phony target doesn't actually work as a dependency, so
> > you end up getting:
> > 
> > $ make
> > make: *** No rule to make target 'generated/map-shift.h', needed by 'main.o'.  Stop.
> > make: *** Waiting for unfinished jobs....
> > 
> > Fix this by making the file generated/map-shift.h our real makefile target,
> > and add this a dependency of the top level build target.
> 
> I still get
> 
> akpm3:/usr/src/25/tools/testing/radix-tree> make
> cc -I. -I../../include -g -O2 -Wall -D_LGPL_SOURCE -fsanitize=address   -c -o main.o main.c
> In file included from ./linux/../../../../include/linux/radix-tree.h:28:0,
>                  from ./linux/radix-tree.h:6,
>                  from main.c:10:
> ./linux/rcupdate.h:5:10: fatal error: urcu.h: No such file or directory

apt-get install liburcu-dev

>  #include <urcu.h>
> 
> 
> lots of breakage here :(
> 



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