i think that something like the attached is needed
Index: development/cmake/src/support/CMakeLists.txt
===================================================================
--- development/cmake/src/support/CMakeLists.txt (revision 20030)
+++ development/cmake/src/support/CMakeLists.txt (working copy)
@@ -10,8 +10,11 @@
file(GLOB support_headers ${TOP_SRC_DIR}/src/support/${LYX_HPP_FILES})
file(GLOB support_minzip_sources ${TOP_SRC_DIR}/src/support/minizip/*.c)
-file(GLOB support_min_zip_headers ${TOP_SRC_DIR}/src/support/minizip/*.h)
+file(GLOB support_minzip_headers ${TOP_SRC_DIR}/src/support/minizip/*.h)
+list(APPEND support_minzip_sources
+ ${TOP_SRC_DIR}/src/support/minizip/zipunzip.cpp)
+
list(REMOVE_ITEM support_sources
${TOP_SRC_DIR}/src/support/os_win32.cpp
${TOP_SRC_DIR}/src/support/os_unix.cpp
