diff --git a/components/isceobj/Sensor/CMakeLists.txt b/components/isceobj/Sensor/CMakeLists.txt
index 45d14b1..41850f0 100644
--- a/components/isceobj/Sensor/CMakeLists.txt
+++ b/components/isceobj/Sensor/CMakeLists.txt
@@ -2,7 +2,14 @@ add_subdirectory(db)
 add_subdirectory(TOPS)
 add_subdirectory(MultiMode)
 
+add_library(asa_im_decode src/asa_im_decode/asa_im_decode.c)
+set_target_properties(asa_im_decode PROPERTIES
+    PREFIX ""
+    OUTPUT_NAME envisat
+    SUFFIX .so)
+
 set(installfiles
+    asa_im_decode
     alos
     __init__.py
     ALOS.py