Fail to build Linux with O= in master

From	Julien Grall <julien.grall@arm.com>
Newsgroups	linux.kernel
Subject	Fail to build Linux with O= in master
Date	2017-09-30 02:00 +0200
Message-ID	<uvdmi-4zz-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Hello,

I have tried to build the latest master and got the following error:

42sh> make O=~/works/linux-build/aarch64-4k -C ~/works/linux                                                                                                     
make: Entering directory '/home/julgra01/works/linux'
Makefile:135: *** failed to create output directory "~/works/linux-build/aarch64-4k".  Stop.
make: Leaving directory '/home/julgra01/works/linux'

The bisector found the commit 8e9b466 "kbuild: use $(abspath ...)
instead of $(shell cd ... && /bin/pwd)".

Looking at the code, it seems that it is because the code is
now using $(realpath ...). Indeed when I replace ~ by $HOME
the kernel is now built.

I am not a Makefile expert, so I would appreciate if anyone
could suggest a patch for this.

Regards,

-- 
Julien Grall

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Fail to build Linux with O= in master Julien Grall <julien.grall@arm.com> - 2017-09-30 02:00 +0200
  Re: Fail to build Linux with O= in master Masahiro Yamada <yamada.masahiro@socionext.com> - 2017-09-30 02:40 +0200
    Re: Fail to build Linux with O= in master Julien Grall <julien.grall@arm.com> - 2017-10-02 13:30 +0200

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