diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -14,6 +14,7 @@
 INCLUDE(FindDoxygen)
 INCLUDE(FindGhostscript)
 FIND_PACKAGE(GLPK 4.33)
+FIND_PACKAGE(CPLEX)
 
 ADD_DEFINITIONS(-DHAVE_CONFIG_H)