Build PX4 on sanpdragon with command “make eagle_leagcy_default”

I compiled the latest PX4 version encountered some problems in Snapdragon flight, my git tag is EAGLE_DRONE_1.2_ES2_0. My VM is ubuntu 14.04 64-bit. I have build HelloWorld successfully.When i run make_eagle_leagcy_default the following problems:
mhhk@ubuntu:~/develop/Firmware$ make eagle_legacy_default
– posix-eagle-legacy
– The ASM compiler identification is GNU
– Found assembler: /home/mhhk/Qualcomm/Hexagon_SDK/3.0/gcc-linaro-4.9-2014.11-x86_64_arm-linux-gnueabihf_linux/bin/arm-linux-gnueabihf-gcc
– Found PythonInterp: /usr/bin/python (found version “2.7.6”)
Generated generate_px4muorb_stubs target
– Configuring done
– Generating done
– Build files have been written to: /home/mhhk/develop/Firmware/build_posix_eagle_legacy_driver_default
PX4 CONFIG: posix_eagle_legacy_driver_default
Scanning dependencies of target git_genmsg
Scanning dependencies of target prebuild_targets
Scanning dependencies of target git_gencpp
[ 0%] Generating git_init_Tools_genmsg.stamp
Scanning dependencies of target df_driver_framework
[ 0%] Built target prebuild_targets
[ 0%] Generating git_init_Tools_gencpp.stamp
Scanning dependencies of target generate_px4muorb_stubs
[ 0%] Built target git_genmsg
[ 0%] Generating px4muorb.h, px4muorb_skel.c, px4muorb_stub.c
Scanning dependencies of target git_uavcan
[ 0%] Built target git_gencpp
[ 0%] Building CXX object src/lib/DriverFramework/framework/src/CMakeFiles/df_driver_framework.dir/DriverFramework.cpp.obj
[ 0%] Generating git_init_src_modules_uavcan_libuavcan.stamp
Scanning dependencies of target git_mavlink
[ 0%] Built target git_uavcan
[ 0%] Generating git_init_mavlink_include_mavlink_v1.0.stamp
Scanning dependencies of target git_matrix
[ 0%] Built target git_mavlink
[ 0%] Generating git_init_src_lib_matrix.stamp
Scanning dependencies of target xml_gen
[ 0%] Built target git_matrix
[ 0%] Generating parameters.xml
Scanning dependencies of target mixer_gen
[ 1%] Generating mixer_multirotor.generated.h
[ 97%] Building C object src/modules/systemlib/CMakeFiles/modules__systemlib.dir/hx_stream.c.obj
[ 98%] Linking CXX static library libmodules__systemlib.a
[ 98%] Built target modules__systemlib
Scanning dependencies of target mainapp
[100%] Building C object src/firmware/posix/CMakeFiles/mainapp.dir/px4muorb_stub.c.obj
[100%] Building CXX object src/firmware/posix/CMakeFiles/mainapp.dir///platforms/posix/main.cpp.obj
make[3]: *** No rule to make target /home/mhhk/Qualcomm/Hexagon_SDK/3.0/libs/common/rpcmem/UbuntuARM_Debug/rpcmem.a’, needed bysrc/firmware/posix/mainapp’. Stop.
make[3]: *** Waiting for unfinished jobs…
make[2]: *** [src/firmware/posix/CMakeFiles/mainapp.dir/all] Error 2
make[1]: *** [all] Error 2
make: *** [posix_eagle_legacy_driver_default] Error 2

I have follow the step as url: but it still can not be solve.what should i do , hope for your reply!
thank you very much!