"has no symbol" error on Mac

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1) Latest code from master 2) Mac 10.11 3) XCode 8.0 I want to generate static library for my Swift program. following error reported during "make". static library can be generated and "sudo make install" runs smoothly. However, this error will happen again when I try to link my Swift program and stop there.

any tips to solve this during "make" stage?

thanks.

Linking CXX static library ../../lib/libopencv_core.a /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../../lib/libopencv_core.a(hal_internal.cpp.o) has no symbols /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../../lib/libopencv_core.a(opencl_clamdblas.cpp.o) has no symbols /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../../lib/libopencv_core.a(opencl_clamdfft.cpp.o) has no symbols /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../../lib/libopencv_core.a(opencl_core.cpp.o) has no symbols /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../../lib/libopencv_core.a(hal_internal.cpp.o) has no symbols /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../../lib/libopencv_core.a(opencl_clamdblas.cpp.o) has no symbols /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../../lib/libopencv_core.a(opencl_clamdfft.cpp.o) has no symbols /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../../lib/libopencv_core.a(opencl_core.cpp.o) has no symbols