When compiling Cangtera 2.2.0 on Ubuntu 12.04 with the default sundials package [installed via 'sudo apt-get install sundials'], I got several errors associated with IDA_Solver.cpp:

src/numerics/IDA_Solver.cpp: In member function 'virtual void Cantera::IDA_Solver::setJacobianType(int)': src/numerics/IDA_Solver.cpp:276:67: error: invalid conversion from 'int ()(sd_size_t, realtype, realtype, N_Vector, N_Vector, N_Vector, DlsMat, void, N_Vector, N_Vector, N_Vector) {aka int ()(long int, double, double, _generic_N_Vector, _generic_N_Vector*, _generic_N_Vector*, _DlsMat*, void*, _generic_N_Vector*, _generic_N_Vector*, _generic_N_Vector*)}' to 'IDADlsDenseJacFn {aka int ()(int, double, double, _generic_N_Vector, _generic_N_Vector*, _generic_N_Vector*, _DlsMat*, void*, _generic_N_Vector*, _generic_N_Vector*, _generic_N_Vector*)}' [-fpermissive] int flag = IDADlsSetDenseJacFn(m_ida_mem, ida_jacobian); ^ In file included from /usr/include/ida/ida_dense.h:24:0, from src/numerics/IDA_Solver.cpp:14: /usr/include/ida/ida_direct.h:256:21: error: initializing argument 2 of 'int IDADlsSetDenseJacFn(void*, IDADlsDenseJacFn)' [-fpermissive] SUNDIALS_EXPORT int IDADlsSetDenseJacFn(void ida_mem, IDADlsDenseJacFn jac); ^ src/numerics/IDA_Solver.cpp: In member function 'virtual void Cantera::IDA_Solver::init(doublereal)': src/numerics/IDA_Solver.cpp:403:59: error: invalid conversion from 'int ()(sd_size_t, realtype, realtype, N_Vector, N_Vector, N_Vector, DlsMat, void*, N_Vector, N_Vector, N_Vector) {aka int ()(long int, double, double, _generic_N_Vector, _generic_N_Vector*, _generic_N_Vector*, _DlsMat*, void*, _generic_N_Vector*, _generic_N_Vector*, _generic_N_Vector*)}' to 'IDADlsDenseJacFn {aka int ()(int, double, double, _generic_N_Vector, _generic_N_Vector*, _generic_N_Vector*, _DlsMat*, void*, _generic_N_Vector*, _generic_N_Vector*, _generic_N_Vector*)}' [-fpermissive] flag = IDADlsSetDenseJacFn(m_ida_mem, ida_jacobian); ^ In file included from /usr/include/ida/ida_dense.h:24:0, from src/numerics/IDA_Solver.cpp:14: /usr/include/ida/ida_direct.h:256:21: error: initializing argument 2 of 'int IDADlsSetDenseJacFn(void*, IDADlsDenseJacFn)' [-fpermissive] SUNDIALS_EXPORT int IDADlsSetDenseJacFn(void *ida_mem, IDADlsDenseJacFn jac); ^ scons: * [build/src/numerics/IDA_Solver.os] Error 1 scons: building terminated because of errors.

These errors were eliminated when I modified lines 21 to 25 of IDA_Solver.cpp so that 'sd_size_t' represented 'int'. I assume that this is an issue associated with the way that SUNDIALS_VERSION is configured.