mk: fix external build

Code commit for 'make -f' support, breaks the build in cases where
entries in $(MAKEFILE_LIST) are absolute paths. This commit uses
notdir and firstword to ensure that only the local filename is used.

Fixes: 3a5c339d51a4 ("mk: support renamed Makefile in external project")
Cc: stable@dpdk.org
Signed-off-by: Marko Kovacevic <marko.kovacevic@intel.com>

diff --git a/mk/internal/rte.extvars.mk b/mk/internal/rte.extvars.mk
index 19594da..98c8606 100644 (file)
--- a/mk/internal/rte.extvars.mk
+++ b/mk/internal/rte.extvars.mk
@@ -20,7 +20,7 @@ ifeq ("$(origin M)", "command line")
 RTE_EXTMK := $(abspath $(M))
 endif
 endif
-RTE_EXTMK ?= $(RTE_SRCDIR)/$(firstword $(MAKEFILE_LIST))
+RTE_EXTMK ?= $(RTE_SRCDIR)/$(notdir $(firstword $(MAKEFILE_LIST)))
 export RTE_EXTMK
 
 # RTE_SDK_BIN must point to .config, include/ and lib/.