diff --git a/lemon/CMakeLists.txt b/lemon/CMakeLists.txt
--- a/lemon/CMakeLists.txt
+++ b/lemon/CMakeLists.txt
@@ -18,7 +18,7 @@
   bits/windows.cc
 )
 
-IF(HAVE_GLPK)
+IF(LEMON_HAVE_GLPK)
   SET(LEMON_SOURCES ${LEMON_SOURCES} glpk.cc)
   INCLUDE_DIRECTORIES(${GLPK_INCLUDE_DIRS})
   IF(WIN32)
@@ -26,22 +26,22 @@
     INSTALL(FILES ${GLPK_BIN_DIR}/libltdl3.dll DESTINATION bin)
     INSTALL(FILES ${GLPK_BIN_DIR}/zlib1.dll DESTINATION bin)
   ENDIF(WIN32)
-ENDIF(HAVE_GLPK)
+ENDIF(LEMON_HAVE_GLPK)
 
-IF(HAVE_CPLEX)
+IF(LEMON_HAVE_CPLEX)
   SET(LEMON_SOURCES ${LEMON_SOURCES} cplex.cc)
   INCLUDE_DIRECTORIES(${CPLEX_INCLUDE_DIRS})
-ENDIF(HAVE_CPLEX)
+ENDIF(LEMON_HAVE_CPLEX)
 
-IF(HAVE_CLP)
+IF(LEMON_HAVE_CLP)
   SET(LEMON_SOURCES ${LEMON_SOURCES} clp.cc)
   INCLUDE_DIRECTORIES(${COIN_INCLUDE_DIRS})
-ENDIF(HAVE_CLP)
+ENDIF(LEMON_HAVE_CLP)
 
-IF(HAVE_CBC)
+IF(LEMON_HAVE_CBC)
   SET(LEMON_SOURCES ${LEMON_SOURCES} cbc.cc)
   INCLUDE_DIRECTORIES(${COIN_INCLUDE_DIRS})
-ENDIF(HAVE_CBC)
+ENDIF(LEMON_HAVE_CBC)
 
 ADD_LIBRARY(lemon ${LEMON_SOURCES})
 
@@ -55,3 +55,8 @@
   DESTINATION include/lemon
   COMPONENT headers
   FILES_MATCHING PATTERN "*.h")
+
+INSTALL(
+  FILES ${CMAKE_CURRENT_BINARY_DIR}/config.h
+  DESTINATION include/lemon
+  COMPONENT headers)