kbuild: Do not use hyphen in exported variable name
authorBen Hutchings <ben@decadent.org.uk>
Sat, 19 Aug 2017 21:30:02 +0000 (22:30 +0100)
committerMasahiro Yamada <yamada.masahiro@socionext.com>
Mon, 21 Aug 2017 00:06:00 +0000 (09:06 +0900)
commit2bfbe7881ee03d12bbedb05f804d139c88df30a0
treed24b23c49cb81350f410a820db155866912622e0
parent801d2e9f1cfb24c15ec821288b6bc2e3107f6fcd
kbuild: Do not use hyphen in exported variable name

This definition in Makefile.dtbinst:

    export dtbinst-root ?= $(obj)

should define and export dtbinst-root when handling the root dts
directory, and do nothing in the subdirectories.  However some shells,
including dash, will not pass through environment variables whose name
includes a hyphen.  Usually GNU make does not use a shell to recurse,
but if e.g. $(srctree) contains '~' it will use a shell here.

Rename the variable to dtbinst_root.

References: https://bugs.debian.org/833561
Fixes: 323a028d39cdi ("dts, kbuild: Implement support for dtb vendor subdirs")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
scripts/Makefile.dtbinst