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Syntax

As described in Using the SAS/C Cross-Platform Compiler and C++ Development System , the basic syntax for invoking the sascc370 compiler driver to compile your C object code is as follows:

sascc370 [options] [filename1 [filename2...]]

The basic syntax for invoking the sasCC370 compiler driver to compile your C++ object code is as follows:

sasCC370 [options] [filename1 [filename2...]]

The options argument for sascc370 and sasCC370 can be one or more of the driver options described in the section Option Descriptions . You can also specify cool options when you invoke the compiler driver, which are described in Prelinking C and C++ Programs , and CICS preprocessor options, which are described in Using the SAS/C CICS Command Preprocessor .

Specifying Phase of Compilation of C and C++ Programs

The SAS/C compile process is divided into several phases. Calls to each phase are normally controlled by a front-end command processor. These front-end processors accept what are referred to as long-form options. When invoking the various phases, the front-end processors convert the options applicable to each phase to a form referred to as short-form options. Each phase only accepts the short-form versions of its options.

Note:   Though short-form options may resemble the OpenEditon shell options, they are often different.   

Note:   For more information on long-form and short-form compiler options, see the chapter about compiling C programs in the SAS/C Compiler and Library User's Guide.   

The compilation of a C or C++ program with the cross-platform compiler occurs in the following phases:

1. CICS pre-processing

2. C++ parsing

3. C parsing

4. Optimization

5. Code generation

6. Prelinking

Some of the options passed to the sascc370 or sasCC370 compiler driver apply only to one of these phases. To indicate the particular phase of compilation, you must use the following syntax when specifying these options:

-Wphase,option

Note:   There is no space after the comma between the phase and the option specifications.   

The phase can be any one of the following:

• -W followed by the letter P specifies that the option should be passed to the CICS command pre-processor.

• -W followed by the letter C specifies that the option should be passed to the C++ translation phase of the compilation.

• -W followed by the number 1 specifies that the option should be passed to the C parser phase of the compilation.

• -W followed by the letter g specifies that the option should be passed to the global optimizer.

• -W followed by the number 2 specifies that the option should be passed to the code generation phase of the compilation.

• -W followed by the letter l specifies that the option should be passed to the prelinker.

Note:   This book uses italics to help you distinguish between the letter l and the number 1 .  

Examples

The following examples illustrate how the compilation phase is specified:

-Wg,-a

The -Wg specification indicates that the -a option should be passed to the global optimization phase of the compilation. The -a option specifies that the global optimizer should assume worst-case aliasing.

Note:   All of the global optimizer options described in this chapter can also be passed to the compiler driver without specifying the compilation phase. For example, to pass the -a option directly, specify -Oa .  

-WP,-d

The -WP specification indicates that the -d option should be passed to the CICS command preprocessor. The -d option is described in Using the SAS/C CICS Command Preprocessor .

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