support odpic-3.1.x

[flokli]

I tried building odpic-raw with odpic-3.1.0, but the build process is failing currently:

Preprocessing library for odpic-raw-0.3.0..
c2hs: Error limit of 20 errors has been reached.
src/Database/Dpi/Internal.chs:46: (column 8) [ERROR]  >>> Expected enum!
  Expected `SubscrNamespace' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:45: (column 8) [ERROR]  >>> Expected enum!
  Expected `StatementType' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:44: (column 8) [ERROR]  >>> Expected enum!
  Expected `StartupMode' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:43: (column 8) [ERROR]  >>> Expected enum!
  Expected `ShutdownMode' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:42: (column 8) [ERROR]  >>> Expected enum!
  Expected `Purity' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:41: (column 8) [ERROR]  >>> Expected enum!
  Expected `PoolGetMode' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:40: (column 8) [ERROR]  >>> Expected enum!
  Expected `PoolCloseMode' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:39: (column 8) [ERROR]  >>> Expected enum!
  Expected `OracleTypeNum' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:38: (column 8) [ERROR]  >>> Expected enum!
  Expected `OpCode' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:37: (column 8) [ERROR]  >>> Expected enum!
  Expected `NativeTypeNum' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:36: (column 8) [ERROR]  >>> Expected enum!
  Expected `MessageState' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:35: (column 8) [ERROR]  >>> Expected enum!
  Expected `MessageDeliveryMode' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:34: (column 8) [ERROR]  >>> Expected enum!
  Expected `FetchMode' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:33: (column 8) [ERROR]  >>> Expected enum!
  Expected `ExecMode' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:32: (column 8) [ERROR]  >>> Expected enum!
  Expected `EventType' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:31: (column 8) [ERROR]  >>> Expected enum!
  Expected `DeqNavigation' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:30: (column 8) [ERROR]  >>> Expected enum!
  Expected `DeqMode' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:29: (column 8) [ERROR]  >>> Expected enum!
  Expected `CreateMode' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:28: (column 8) [ERROR]  >>> Expected enum!
  Expected `ConnCloseMode' to denote an enum; instead found
  a struct, union, or object.
src/Database/Dpi/Internal.chs:27: (column 8) [ERROR]  >>> Expected enum!
  Expected `AuthMode' to denote an enum; instead found
  a struct, union, or object.

Building with odpic-2.4.2 did work, but as the latest version of the python binding (cx_oracle) already doesn't work with 2.4.2 anymore, it would be nice if odpic-raw could support 3.1.x too.

[flokli]

odpic changed some typedefs from enum to uint32_t:

dpi.h at 2.4.2:

// subscription namespaces
typedef enum {
    DPI_SUBSCR_NAMESPACE_AQ = 1,              // OCI_SUBSCR_NAMESPACE_AQ
    DPI_SUBSCR_NAMESPACE_DBCHANGE = 2         // OCI_SUBSCR_NAMESPACE_DBCHANGE
} dpiSubscrNamespace;

dpi.h at 3.1.0:

// subscription namespaces
typedef uint32_t dpiSubscrNamespace;
#define DPI_SUBSCR_NAMESPACE_AQ                     1
#define DPI_SUBSCR_NAMESPACE_DBCHANGE               2

can we get this to build with both 2.x and 3.x?