Introduce basic OCF build test with posix environment

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>

tests/build/Makefile

@@ -0,0 +1,40 @@
+#
+# Copyright(c) 2019 Intel Corporation
+# SPDX-License-Identifier: BSD-3-Clause-Clear
+#
+
+#
+# This Makefile performs basic build test of OCF with posix environment.
+# It doesn't generate any final executable, but just compiles every
+# single *.c file into *.o object, to check if compilation succeeds.
+#
+# It's intended to be used as part of CI process.
+#
+
+OCFDIR=../../
+SRCDIR=src/
+INCDIR=include/
+
+SRC=$(shell find ${SRCDIR} -name \*.c)
+OBJS = $(patsubst %.c, %.o, $(SRC))
+CFLAGS = -Wall -I${INCDIR} -I${SRCDIR}/ocf/env/
+
+all: sync
+	$(MAKE) build
+
+build: $(OBJS)
+
+sync:
+	@$(MAKE) -C ${OCFDIR} inc O=$(PWD)
+	@$(MAKE) -C ${OCFDIR} src O=$(PWD)
+	@$(MAKE) -C ${OCFDIR} env O=$(PWD) ENV=posix
+
+clean:
+	@rm -rf $(OBJS)
+
+distclean:
+	@rm -rf $(OBJS)
+	@rm -rf src/ocf
+	@rm -rf include/ocf
+
+.PHONY: all build sync clean distclean