How to force CMake not add major/minor version in shared library filename and soname?

I'm compiling libclang with Cmake for Android (with Android NDK).

Here is the part of CMake configuration that configure filename and soname:

set_target_properties(libclang
    PROPERTIES
    VERSION ${LIBCLANG_LIBRARY_VERSION}
    DEFINE_SYMBOL _CINDEX_LIB_)

In different file:

set(LIBCLANG_LIBRARY_VERSION
    "${CLANG_VERSION_MAJOR}" CACHE STRING
    "Major version number that will be appended to the libclang library")

and

if(NOT DEFINED CLANG_VERSION_MAJOR)
  set(CLANG_VERSION_MAJOR ${LLVM_VERSION_MAJOR})
endif()

Since i compile llvm/clang of version "7.0.0" libclang filename and soname is libclang.so.7 which is not desired for Android.

~/llvm/build anton$ls -l lib/libclang.so
lrwxrwxrwx 1 anton anton 13 Nov 30 12:13 lib/libclang.so -> libclang.so.7
~/llvm/build anton$arm-linux-androideabi-readelf --dynamic lib/libclang.so.7 | grep SONAME
 0x0000000e (SONAME)                     Library soname: [libclang.so.7]

How can i avoid adding of ".7" in both filename and soname (to make it just libclang.so)?

I've tried to:

1) comment property like follows:

set_target_properties(libclang
  PROPERTIES
  #VERSION ${LIBCLANG_LIBRARY_VERSION}
  DEFINE_SYMBOL _CINDEX_LIB_)

and the filename and soname is still ".so.7" for some reason

2) set it empty:

set_target_properties(libclang
  PROPERTIES
  VERSION ""
  DEFINE_SYMBOL _CINDEX_LIB_)

and the filename and soname is ".so." (with dot at the end).

What can i do?

Solution

Thanks to @Fred I was able to get it with the following (really dirty-dirty trick):

set_target_properties(libclang
  PROPERTIES
  #VERSION ${LIBCLANG_LIBRARY_VERSION}
  SUFFIX ""
  VERSION "so"
  SOVERSION "so"
  DEFINE_SYMBOL _CINDEX_LIB_)

I've checked it to have proper filename and soname:

~/llvm/build anton$ls -l lib/libclang.so
-rwxrwxr-x 1 anton anton 33590456 Nov 30 12:54 lib/libclang.so
~/llvm/build anton$arm-linux-androideabi-readelf --dynamic lib/libclang.so | grep SONAME
 0x0000000e (SONAME)                     Library soname: [libclang.so]

However i'm not sure if smth is wrong as i did not try to load it yet.

Please let me know if there is proper way to do it.