add linux board project

board/Linux_Posix/mqtt_demo/Makefile

@@ -0,0 +1,58 @@
+###################################################################
+#automatic detection QTOP and LOCALDIR
+CUR_DIR := $(patsubst %/,%,$(dir $(realpath $(firstword $(MAKEFILE_LIST)))))
+TRYQTOP := $(shell if [ -n "$$QTOP" ] ; then\
+        echo $$QTOP;\
+        else\
+        cd $(CUR_DIR); while /usr/bin/test ! -e qmk ; do \
+        dir=`cd ../;pwd`;                       \
+        if [ "$$dir" = "/" ] ; then             \
+           echo Cannot find QTOP in $(firstword $(MAKEFILE_LIST)) 1>&2; \
+           exit 1;                              \
+        fi ;                                    \
+        cd $$dir;                               \
+        done ;                                  \
+        pwd;                                    \
+        fi)
+QTOP ?= $(realpath ${TRYQTOP})
+
+ifeq ($(QTOP),)
+$(error Please run this in a tree)
+endif
+LOCALDIR = $(patsubst %/,%,$(subst $(realpath $(QTOP))/,,$(CUR_DIR)))
+export QTOP
+
+####################################################################
+
+
+export BP=Linux_Posix
+
+TREE_LIB_ENABLE=1
+lib=
+subdirs =
+
+CFGFLAGS += -I$(CUR_DIR)/inc
+CFGFLAGS += -I$(QTOP)/net/sal_module_wrapper
+CFGFLAGS += -I$(QTOP)/components/connectivity/Eclipse-Paho-MQTT/wrapper/include
+CFGFLAGS += -I$(QTOP)/components/connectivity/Eclipse-Paho-MQTT/3rdparty/include
+
+all::
+	make -C ${QTOP}/arch BP=Linux_Posix
+	make -C ${QTOP}/kernel
+	make -C ${QTOP}/osal
+	make -C ${QTOP}/net
+	make -C ${QTOP}/devices
+	make -C ${QTOP}/components/connectivity/Eclipse-Paho-MQTT
+
+exec = 
+LD_A_FILES += $(LIBDIR)/libarch.a
+LD_A_FILES += $(LIBDIR)/libkernel.a
+LD_A_FILES += $(LIBDIR)/libhello_world.a
+LD_A_FILES += $(LIBDIR)/libcmsis_os.a
+LD_A_FILES += $(LIBDIR)/libEclipse-Paho-MQTT.a
+LD_A_FILES += $(LIBDIR)/libsal_module_wrapper.a
+LDFLAGS += -lpthread
+
+include ${QTOP}/qmk/generic/Make.exec
+
+