The $srctree environment variable gives the path relative to which
'(o)source' statements work (the current directory is used if $srctree
is unset). It is set to $ZEPHYR_BASE in cmake/kconfig.cmake, so there's
no need to qualify the source of Kconfig.zephyr in sample Kconfig files
(or in external projects).
All 'source's in Zephyr assume that the Zephyr root directory is used as
the srctree as well, and would break otherwise.
Remove the $(ZEPHYR_BASE)s to make it clearer that all 'source'
statements work relative to the Zephyr root. There was some user
confusion on IRC.
Also explain how things work in the documentation.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
With the new Kconfig preprocessor (described in
https://github.com/torvalds/linux/blob/master/Documentation/kbuild/
kconfig-macro-language.txt), the syntax for expanding environment
variables is $(FOO) rather than $FOO.
$(FOO) is a general preprocessor variable expansion, which falls back to
environment variables if the variable isn't set (like in Make). It can
also be used in prompts, 'comment's, etc.
The old syntax will probably be supported forever in Kconfiglib for
backwards compatibility, but might as well make it consistent now that
people might start using the preprocessor more.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Since on ARM CONFIG_NUM_IRQS option has no prompt, it cannot be properly
overridden by a prj.conf fragment. Instead make it have a prompt for
this particular test to be able to override it properly.
Fixes#8200
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
Ulf Magnusson