--- tqsl-2.3.1/src/CMakeLists.txt.orig  2017-05-10 03:37:36.397505115 +0000
+++ tqsl-2.3.1/src/CMakeLists.txt       2017-05-10 03:52:51.797487842 +0000
@@ -51,6 +51,8 @@
 target_link_libraries(${TQSLLIBNAME} ${OPENSSL_LIBRARIES} ${EXPAT_LIBRARIES} ${ZLIB_LIBRARIES} ${BDB_LIBRARIES} ${CARBON_LIBRARY})
 include_directories(${OPENSSL_INCLUDE_DIR} ${ZLIB_INCLUDE_DIR} ${EXPAT_INCLUDE_DIR} ${BDB_INCLUDE_DIR} ${CARBON_INCLUDE_DIR})
 
+set_target_properties(${TQSLLIBNAME} PROPERTIES SOVERSION ${TQSLLIB_VERSION})
+
 if(NOT APPLE AND NOT WIN32)
 set_source_files_properties(location.cpp PROPERTIES COMPILE_DEFINITIONS CONFDIR="${CMAKE_INSTALL_PREFIX}/share/TrustedQSL/")                                           
 set(HEADERS_TO_INSTALL tqsllib.h tqslerrno.h cabrillo.h adif.h tqslconvert.h)