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Client APIs and toolsYou can use the HCL OneDB™ implementation of client APIs to develop applications for HCL OneDB™ database servers.
ESQL/C GuideThe HCL OneDB™ ESQL/C Programmer's Manual explains how to use , the HCL OneDB™ implementation of Embedded Structured Query Language (SQL) for C (ESQL/C), to create client applications with database-management capabilities.
What is HCL OneDB™ ESQL/C?
Compile programs
Compiling and linking options of the esql command
Compile without linking

Compile without linking

By default, the command processor preprocesses, compiles, and links the program and creates either an executable file or a DLL. To suppress the linking of your program specify the -c option. With this option, esql only preprocesses and compiles the code. The output of this command is a C object file (.obj extension) for each C source file (.c) or source file (.ec).

For example, to preprocess and compile the source file demo1.ec, use the following command:

esql -c demo1.ec

The preceding command generates a C object file called demo1.obj. The following esql command preprocesses demo1.ec, checks for HCL OneDB™ extensions to X/Open-standard syntax, and suppresses warning messages:

esql -c -xopen -nowarn demo1.ec

Important: If you specify the conflicting options -c and -o, the preprocessor ignores the -o option and processes the -c option. The preprocessor reports the conflict in an error message.