fixed typo in project name, added threads linking

src/CMakeLists.txt

-set(PACKAGE_NAME "cdo")
+set(PACKAGE_NAME cdo)
 set(VERSION "${CMAKE_PROJECT_VERSION}")
 
 add_subdirectory(lib)
@@ -363,7 +363,7 @@ target_include_directories(cdolib PRIVATE "${PROJECT_SOURCE_DIR}/src/mpim_grid"
   "${PROJECT_BINARY_DIR}/src"
   "${PROJECT_SOURCE_DIR}/libcdi/src"
 )
-target_link_libraries(cdolib netCDF::netcdf CMOR::CMOR)
+target_link_libraries(cdolib Threads::Threads netCDF::netcdf CMOR::CMOR)
 target_compile_definitions(cdolib PRIVATE ${cdo_compile_defintions})