Fix Cygwin installation

Signed-off-by: Pedro Luis Castedo Cepeda <pedroluis.castedo@upm.es>

CMakeLists.txt

@@ -16,7 +16,7 @@
 
 # Note: on OS X you should install XCode and the associated command-line tools
 
-CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8.4)
 PROJECT("paho" C)
 MESSAGE(STATUS "CMake version: " ${CMAKE_VERSION})
 MESSAGE(STATUS "CMake system name: " ${CMAKE_SYSTEM_NAME})

src/CMakeLists.txt

@@ -81,7 +81,8 @@ SET_TARGET_PROPERTIES(
 
 INSTALL(TARGETS paho-mqtt3c paho-mqtt3a
     ARCHIVE DESTINATION lib
-    LIBRARY DESTINATION ${PAHO_LIBRARY_DIR_NAME})
+    LIBRARY DESTINATION ${PAHO_LIBRARY_DIR_NAME}
+    RUNTIME DESTINATION bin)
 INSTALL(TARGETS MQTTVersion
     RUNTIME DESTINATION bin)
 
@@ -147,10 +148,12 @@ IF (PAHO_WITH_SSL)
         COMPILE_DEFINITIONS "OPENSSL=1")
     INSTALL(TARGETS paho-mqtt3cs
         ARCHIVE DESTINATION lib
-        LIBRARY DESTINATION  ${PAHO_LIBRARY_DIR_NAME})
+        LIBRARY DESTINATION  ${PAHO_LIBRARY_DIR_NAME}
+        RUNTIME DESTINATION  bin)
     INSTALL(TARGETS paho-mqtt3as
         ARCHIVE DESTINATION lib
-        LIBRARY DESTINATION  ${PAHO_LIBRARY_DIR_NAME})
+        LIBRARY DESTINATION  ${PAHO_LIBRARY_DIR_NAME}
+        RUNTIME DESTINATION  bin)
 
     IF (PAHO_BUILD_STATIC)
         ADD_LIBRARY(paho-mqtt3cs-static STATIC $<TARGET_OBJECTS:common_ssl_obj> MQTTClient.c SSLSocket.c)
@@ -160,10 +163,8 @@ IF (PAHO_WITH_SSL)
         TARGET_LINK_LIBRARIES(paho-mqtt3as-static ${OPENSSL_LIBRARIES} ${LIBS_SYSTEM})
 
         INSTALL(TARGETS paho-mqtt3cs-static
-            ARCHIVE DESTINATION lib
-            LIBRARY DESTINATION  ${PAHO_LIBRARY_DIR_NAME})
+            ARCHIVE DESTINATION lib)
         INSTALL(TARGETS paho-mqtt3as-static
-            ARCHIVE DESTINATION lib
-            LIBRARY DESTINATION  ${PAHO_LIBRARY_DIR_NAME})
+            ARCHIVE DESTINATION lib)
     ENDIF()
 ENDIF()