Programmer's Guide to the Pro*C/C++ Precompiler

Library

Product

Contents

Index

System-Specific References

This appendix groups together in one place all references in this guide to system-specific information.

System-Specific Information

Each of the sections below describes briefly a reference in this guide to system-specific Pro*C behavior. System-specific information is described in the appropriate Oracle system-specific documentation for your platform.

Location of Standard Header Files

The location of the standard Pro*C header files--sqlca.h, oraca.h, and sqlda.h--is system specific. On UNIX systems, they are located in the $ORACLE_HOME/sqllib/public directory. For other operating systems, see your Oracle system-specific documentation.

Specifying Location of Included Files for the C Compiler

When you use the Pro*C command-line option INCLUDE= to specify the location of a non-standard file to be included, you should also specify the same location for the C compiler. The way you do this is system specific. See pages 3 - 8 and 3 - 9.

ANSI C Support

Some C compilers support the ANSI C standard; some do not. Make sure to use the CODE= option to make the C code that Pro*C generates compatible with your system's C compiler. See page 3 - 12.

Struct Component Alignment

C compilers vary in the way they align struct components, usually depending on the system hardware. Use the sqlvcp() function to determine the padding added to the .arr component of a VARCHAR struct. See the section ``Finding the Length of a VARCHAR Array Component''

. See also page 3 - 59.

External Datatypes

Some Oracle external datatypes are designed to support host datatypes in languages other than C. For example, DECIMAL and DISPLAY are used mainly for PL/I and COBOL. See the section ``External Datatypes''

Size of an Integer

The size in bytes of integer datatypes is system dependent. See the section ``Integer''

Size of ROWID

The binary external size of a ROWID datatype is system dependent. See the section ``ROWID''

Byte Ordering

The order of bytes in a word is platform dependent. See the section ``Unsigned''

Connecting to Oracle

Connecting to Oracle using the SQL*Net V1 or V2 drivers involves system-specific network protocols. See the section ``Connecting to Oracle''

for more details.

Linking in an XA Library

You link in your XA library in a system-dependent way. See the section ``Linking''

, and your Oracle installation or user's guides, for more information.

**Location of the Pro*C Executable**

The location of the Pro*C Precompiler is system specific. See the section ``Precompiler Command''

, and your installation or user's guides, for more information.

System Configuration File

Each precompiler installation has a system configuration file. This file is not shipped with the precompiler; it must be created by the system administrator. The location (directory path) which Pro*C searches for the system configuration file is system dependent. See the section ``Configuration Files''

for more information.

INCLUDE Option Syntax

The syntax for the value of the INCLUDE command-line option is system specific. See the ``INCLUDE'' section

Compiling and Linking

Compiling and linking your Pro*C output to get an executable application is always system dependent. See the section ``Compiling and Linking''

, and the following sections, for additional information.

User Exits

Compiling and linking Oracle Forms user exits is system specific. See Chapter 13.

Prev Next

Library

Product

Contents

Index