Compilation process

A Pro*C program is compiled in two steps.

First, the Pro*C precompiler recognizes the SQL statements embedded in the program, and replaces them with appropriate calls to the functions in the SQL runtime library.

• The PROC compiler generates .c file with all the SQL statements replaced by the functions which are already pre-defined within the Oracle runtime library.

proc file.pc    /* this will build file.c and file.lis */

The output is pure C/C++ code with all the pure C/C++ portions intact. Then, a regular C/C++ compiler is used to compile the code and produces the executable.

gcc -o file file.c

Few Restrictions

Oracle Pro*C precompiler doesn’t precompile the files, which include space within the file name.

Pro*C doesn’t realize the #define directive.