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build: Unset CDPATH to avoid problems

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In some places the output of commands, which include "cd" are used.
In case of CDPATH the new path is printed, which might not be expected.
Disable the variable to avoid these problem.

When CDPATH was set by the user to some value like "export CDPATH=."
the git checkout done by the build system did not work anymore, the
git cloning aborted with such an error message for example:
....
Packing checkout...
tar: /disk/fs1/tmp2/mehrtens/pon-ugw/ugw-haps/openwrt/tmp/dl/ppa-drv-1.0\n@1534240258: Cannot stat: No such file or directory
tar: Date sample file not found
Try 'tar --help' or 'tar --usage' for more information.
.....

To avoid this, this patch makes the build system unset CDPATH inside
the build system, so the build system will still work even when the
user set this variable in his local environment.

Signed-off-by: Thomas Langer <thomas.langer@intel.com>
Signed-off-by: Hauke Mehrtens <hauke.mehrtens@intel.com>
Acked-by: Hans Dedecker <dedeckeh@gmail.com>
(backported from 41faf52b0ffe902381e75a35e886f635321347b5)
This commit is contained in:
Thomas Langer 2018-08-20 12:13:29 +02:00 committed by Jo-Philipp Wich
parent 97fddb2fdd
commit 7772a5b05b
1 changed files with 2 additions and 0 deletions
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2
Makefile
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@ -27,6 +27,8 @@ ifneq ($(OPENWRT_BUILD),1)
export OPENWRT_BUILD
GREP_OPTIONS=
export GREP_OPTIONS
CDPATH=
export CDPATH
include $(TOPDIR)/include/debug.mk
include $(TOPDIR)/include/depends.mk
include $(TOPDIR)/include/toplevel.mk