1.1 --- a/CMakeLists.txt	Thu Feb 28 23:45:39 2013 +0100
     1.2 +++ b/CMakeLists.txt	Mon Jul 15 08:33:08 2013 +0200
     1.3 @@ -61,9 +61,64 @@
     1.4  
     1.5  FIND_PACKAGE(Doxygen)
     1.6  FIND_PACKAGE(Ghostscript)
     1.7 -FIND_PACKAGE(GLPK 4.33)
     1.8 -FIND_PACKAGE(CPLEX)
     1.9 -FIND_PACKAGE(COIN)
    1.10 +
    1.11 +SET(LEMON_ENABLE_GLPK YES CACHE STRING "Enable GLPK solver backend.")
    1.12 +SET(LEMON_ENABLE_ILOG YES CACHE STRING "Enable ILOG (CPLEX) solver backend.")
    1.13 +SET(LEMON_ENABLE_COIN YES CACHE STRING "Enable COIN solver backend.")
    1.14 +
    1.15 +IF(LEMON_ENABLE_GLPK) 
    1.16 +  FIND_PACKAGE(GLPK 4.33)
    1.17 +ENDIF(LEMON_ENABLE_GLPK)
    1.18 +IF(LEMON_ENABLE_ILOG)
    1.19 +  FIND_PACKAGE(ILOG)
    1.20 +ENDIF(LEMON_ENABLE_ILOG)
    1.21 +IF(LEMON_ENABLE_COIN)
    1.22 +  FIND_PACKAGE(COIN)
    1.23 +ENDIF(LEMON_ENABLE_COIN)
    1.24 +
    1.25 +IF(GLPK_FOUND)
    1.26 +  SET(LEMON_HAVE_LP TRUE)
    1.27 +  SET(LEMON_HAVE_MIP TRUE)
    1.28 +  SET(LEMON_HAVE_GLPK TRUE)
    1.29 +ENDIF(GLPK_FOUND)
    1.30 +IF(ILOG_FOUND)
    1.31 +  SET(LEMON_HAVE_LP TRUE)
    1.32 +  SET(LEMON_HAVE_MIP TRUE)
    1.33 +  SET(LEMON_HAVE_ILOG TRUE)
    1.34 +ENDIF(ILOG_FOUND)
    1.35 +IF(COIN_FOUND)
    1.36 +  SET(LEMON_HAVE_LP TRUE)
    1.37 +  SET(LEMON_HAVE_MIP TRUE)
    1.38 +  SET(LEMON_HAVE_CLP TRUE)
    1.39 +  SET(LEMON_HAVE_CBC TRUE)
    1.40 +ENDIF(COIN_FOUND)
    1.41 +
    1.42 +IF(ILOG_FOUND)
    1.43 +  SET(DEFAULT_LP "CPLEX")
    1.44 +  SET(DEFAULT_MIP "CPLEX")
    1.45 +ELSEIF(COIN_FOUND)
    1.46 +  SET(DEFAULT_LP "CLP")
    1.47 +  SET(DEFAULT_MIP "CBC")
    1.48 +ELSEIF(GLPK_FOUND)
    1.49 +  SET(DEFAULT_LP "GLPK")
    1.50 +  SET(DEFAULT_MIP "GLPK")
    1.51 +ENDIF()
    1.52 +
    1.53 +IF(NOT LEMON_DEFAULT_LP OR
    1.54 +    (NOT ILOG_FOUND AND (LEMON_DEFAULT_LP STREQUAL "CPLEX")) OR
    1.55 +    (NOT COIN_FOUND AND (LEMON_DEFAULT_LP STREQUAL "CLP")) OR
    1.56 +    (NOT GLPK_FOUND AND (LEMON_DEFAULT_LP STREQUAL "GLPK")))
    1.57 +  SET(LEMON_DEFAULT_LP ${DEFAULT_LP} CACHE STRING
    1.58 +    "Default LP solver backend (GLPK, CPLEX or CLP)" FORCE)
    1.59 +ENDIF()
    1.60 +IF(NOT LEMON_DEFAULT_MIP OR
    1.61 +    (NOT ILOG_FOUND AND (LEMON_DEFAULT_MIP STREQUAL "CPLEX")) OR
    1.62 +    (NOT COIN_FOUND AND (LEMON_DEFAULT_MIP STREQUAL "CBC")) OR
    1.63 +    (NOT GLPK_FOUND AND (LEMON_DEFAULT_MIP STREQUAL "GLPK")))
    1.64 +  SET(LEMON_DEFAULT_MIP ${DEFAULT_MIP} CACHE STRING
    1.65 +    "Default MIP solver backend (GLPK, CPLEX or CBC)" FORCE)
    1.66 +ENDIF()
    1.67 +
    1.68  
    1.69  IF(DEFINED ENV{LEMON_CXX_WARNING})
    1.70    SET(CXX_WARNING $ENV{LEMON_CXX_WARNING})