mk: add build directory to library search path

Add default library output folder to the library search folder.

This is useful for development environment, in production environment
DPDK libraries already should be in know locations.

Patch removes requirement to set LD_LIBRARY_PATH variable when DPDK
compiled as shared library.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>

mk/rte.app.mk

@@ -187,6 +187,10 @@ LDLIBS += $(_LDLIBS-y) $(CPU_LDLIBS) $(EXTRA_LDLIBS)
 LDLIBS := $(shell echo $(LDLIBS) | \
 	awk '{for (i = 1; i <= NF; i++) { if (!seen[$$i]++) print $$i }}')
 
+ifeq ($(RTE_DEVEL_BUILD)$(CONFIG_RTE_BUILD_SHARED_LIB),yy)
+LDFLAGS += -rpath=$(RTE_SDK_BIN)/lib
+endif
+
 .PHONY: all
 all: install
 

scripts/test-null.sh

@@ -36,7 +36,6 @@ build=${1:-build}
 coremask=${2:-3} # default using cores 0 and 1
 
 if grep -q SHARED_LIB=y $build/.config; then
-	export LD_LIBRARY_PATH=$build/lib:$LD_LIBRARY_PATH
 	pmd='-d librte_pmd_null.so'
 fi