Cannot generate a safe runtime

[renhaofan]

When run cmake :
`-- CUDA found: TRUE
-- libfreenect2 found: TRUE
-- librealsense found: FALSE
-- libpng found: TRUE
-- Configuring done
CMake Warning at CMakeLists.txt:96 (add_executable):
Cannot generate a safe runtime search path for target FastFusion because
files in some directories may conflict with libraries in implicit
directories:

runtime library [libz.so.1] in /usr/lib/x86_64-linux-gnu may be hidden by files in:
  /usr/local/lib

Some of these libraries may not be found correctly.

-- Generating done
when I runlocate libz.so.1`, there are many libz.so in different folders:

/lib/i386-linux-gnu/libz.so.1
/lib/i386-linux-gnu/libz.so.1.2.8
/lib/x86_64-linux-gnu/libz.so.1
/lib/x86_64-linux-gnu/libz.so.1.2.8
/opt/anaconda3/envs/sensordata/lib/libz.so
/opt/anaconda3/envs/sensordata/lib/libz.so.1
/opt/anaconda3/envs/sensordata/lib/libz.so.1.2.11
/snap/core/6405/lib/x86_64-linux-gnu/libz.so.1
/snap/core/6405/lib/x86_64-linux-gnu/libz.so.1.2.8
/snap/core/6531/lib/x86_64-linux-gnu/libz.so.1
/snap/core/6531/lib/x86_64-linux-gnu/libz.so.1.2.8
/snap/core/6673/lib/x86_64-linux-gnu/libz.so.1
/snap/core/6673/lib/x86_64-linux-gnu/libz.so.1.2.8
/snap/vscode/89/lib/x86_64-linux-gnu/libz.so.1
/snap/vscode/89/lib/x86_64-linux-gnu/libz.so.1.2.8
/usr/lib/libz.so
/usr/lib/libz.so.1
/usr/lib/libz.so.1.2.9
/usr/lib/x86_64-linux-gnu/libz.so
/usr/local/lib/libz.so
/usr/local/lib/libz.so.1
/usr/local/lib/libz.so.1.2.11
/usr/local/lib/libz.so.1.2.8
/usr/local/lib/libz.so.1.2.9

I think the why there is conflict with libraries in implicit. I have tried to add some items in /usr/share/cmake-3.5/Modules/FindZLIB.cmake
set(CMAKE_EXE_LINKER_FLAGS /usr/local/lib/)
set(ZLIB_INCLUDE_DIRS /usr/local/include)
set(ZLIB_LIBRARIES -L/usr/local/lib)

but useless, any suggestions?