Ok ... here's the deal:
You need to go to lib \ CMakeLists.txt and add to the end (line in black)
ADD_LIBRARY (zip SHARED $ {LIBZIP_SOURCES} $ {LIBZIP_EXTRA_FILES})
ADD_LIBRARY (zipstatic STATIC $ {LIBZIP_SOURCES} $ {LIBZIP_EXTRA_FILES})
SET_TARGET_PROPERTIES (zip PROPERTIES VERSION 3.0 SOVERSION 3) TARGET_LINK_LIBRARIES (zip $ {ZLIB_LIBRARY})
INSTALL (NUMBERS zip ARCHIVE PURPOSE lib LIBRARY DESTINATION lib)
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