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Masahiro Yamada 8e9b466799 kbuild: use $(abspath ...) instead of $(shell cd ... && /bin/pwd) 
Kbuild conventionally uses $(shell cd ... && /bin/pwd) idiom to get
the absolute path of the directory because GNU Make 3.80, the minimal
supported version at that time, did not support $(abspath ...) or
$(realpath ...).

Commit 37d69ee308 ("docs: bump minimal GNU Make version to 3.81")
dropped the GNU Make 3.80 support, so we are now allowed to use those
make-builtin helpers.

This conversion will provide better portability without relying on
the pwd command or its location /bin/pwd.

I am intentionally using $(realpath ...) instead $(abspath ...) in
some places.  The difference between the two is $(realpath ...)
returns an empty string if the given path does not exist.  It is
convenient in places where we need to error-out if the makefile fails
to create an output directory.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Thierry Reding <treding@nvidia.com>
History 2017-09-01 08:50:32 +09:00
..
linux kbuild: use $(abspath ...) instead of $(shell cd ... && /bin/pwd) 2017-09-01 08:50:32 +09:00
Makefile scripts/gdb: add infrastructure 2015-02-17 14:34:53 -08:00
vmlinux-gdb.py Revert "scripts/gdb: add a Radix Tree Parser" 2016-07-15 14:54:27 +09:00