added ODBC support

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@299 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/iodbc/dlf.h

@@ -0,0 +1,35 @@
+#ifndef	_DLF_H
+# define _DLF_H
+
+#define DLDAPI_SVR4_DLFCN
+
+#ifdef __HPUX__
+#define DLDAPI_HP_SHL
+#endif
+
+#ifdef __AIX__
+#define DLDAPI_AIX_LOAD
+#endif
+
+# include	<../iodbc/config.h>
+# include 	<../iodbc/windows.h>
+
+# ifdef DLDAPI_SVR4_DLFCN
+#    include	<dlfcn.h>
+# else
+     extern void FAR*	dlopen(char FAR* path, int mode);
+     extern void FAR*	dlsym(void FAR* hdll, char FAR* sym);
+     extern char FAR*	dlerror();
+     extern int		dlclose(void FAR* hdll);
+# endif
+
+# ifndef	RTLD_LAZY
+#    define	RTLD_LAZY       1
+# endif
+
+# define	DLL_OPEN(dll)		(void*)dlopen((char*)(path), RTLD_LAZY)
+# define	DLL_PROC(hdll, sym)	(void*)dlsym((void*)(hdll), (char*)sym)
+# define	DLL_ERROR()		(char*)dlerror()
+# define	DLL_CLOSE(hdll)		dlclose((void*)(hdll))
+
+#endif