ex_cflags = $(shell echo $$EX_CFLAGS )
build_path ?= ../../.build
-header_path := $(shell find $(build_path) -name 'rmr.h' |head -1 | sed 's!/rmr/.*!!' )
+header_path := $(shell find $(build_path) -name 'rmr.h' 2>/dev/null |head -1 | sed 's!/rmr/.*!!' )
-C_INCLUDE_PATH := $(header_path)
-LD_LIBRARY_PATH=$(build_path):$(build_path)/lib
+# use from environment if there so as to allow build to reference installed base
+C_INCLUDE_PATH ?= $(header_path)
+LD_LIBRARY_PATH ?= $(build_path):$(build_path)/lib
LIBRARY_PATH = $(LD_LIBRARY_PATH)
# These programmes are designed to test some basic application level functions
.PHONY: all all_si
-all: sender receiver caller mt_receiver v_sender ex_rts_receiver
+all: sender receiver caller mt_receiver v_sender ex_rts_receiver sender_si receiver_si
all_si: sender_si receiver_si