build: filter out relative directory entries from $PATH

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@48107 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/include/toplevel.mk b/include/toplevel.mk
index c8f342b..0b5ac26 100644 (file)
--- a/include/toplevel.mk
+++ b/include/toplevel.mk
@@ -39,6 +39,13 @@ unexport LPATH
 # make sure that a predefined CFLAGS variable does not disturb packages
 export CFLAGS=
 
+empty:=
+space:= $(empty) $(empty)
+path:=$(subst :,$(space),$(PATH))
+path:=$(filter-out .%,$(path))
+path:=$(subst $(space),:,$(path))
+export PATH:=$(path)
+
 unexport TAR_OPTIONS
 
 ifneq ($(shell $(HOSTCC) 2>&1 | grep clang),)