cmake install on linux fixed

CMakeLists.txt

@@ -903,11 +903,16 @@ endif ()
 
 include(CMakePackageConfigHelpers)
 
-string(TOUPPER "${CMAKE_BUILD_TYPE}" U_CMAKE_BUILD_TYPE)
-get_property(libzmq_pf TARGET libzmq PROPERTY ${U_CMAKE_BUILD_TYPE}_POSTFIX)
-set(libzmq_file libzmq${libzmq_pf}${CMAKE_LINK_LIBRARY_SUFFIX})
-get_property(libzmq_static_pf TARGET libzmq-static PROPERTY ${U_CMAKE_BUILD_TYPE}_POSTFIX)
-set(libzmq_static_file libzmq-static${libzmq_static_pf}${CMAKE_LINK_LIBRARY_SUFFIX})
+if (MSVC)
+  string(TOUPPER "${CMAKE_BUILD_TYPE}" U_CMAKE_BUILD_TYPE)
+  get_property(libzmq_pf TARGET libzmq PROPERTY ${U_CMAKE_BUILD_TYPE}_POSTFIX)
+  set(libzmq_file libzmq${libzmq_pf}${CMAKE_LINK_LIBRARY_SUFFIX})
+  get_property(libzmq_static_pf TARGET libzmq-static PROPERTY ${U_CMAKE_BUILD_TYPE}_POSTFIX)
+  set(libzmq_static_file libzmq-static${libzmq_static_pf}${CMAKE_LINK_LIBRARY_SUFFIX})
+else()
+  set(libzmq_file libzmq${CMAKE_SHARED_LIBRARY_SUFFIX})
+  set(libzmq_static_file libzmq-static${CMAKE_STATIC_LIBRARY_SUFFIX})
+endif()
 
 # GNUInstallDirs "DATADIR" wrong here; CMake search path wants "share".
 set(ZEROMQ_CMAKECONFIG_INSTALL_DIR "share/cmake/${PROJECT_NAME}" CACHE STRING "install path for ZeroMQConfig.cmake")