6.11.4 Compiler options

The menu "Options|Compiler" allows to set other options that aect the compilers behaviour. When this menu item is chosen, a dialog pops up that displays several tabs.

There are 5 tabs:

Syntax

Here options can be set that aect the various syntax aspects of the code. They correspond mostly to the -S option on the command line (section 5.1.5, page 98).

Code generation

These options control the generated code; they are mostly concerned with the -C and -X command-line options.

Verbose

These set the verbosity of the compiler when compiling. The messages of the compiler are shown in the compiler messages window (can be called with F12).

Browser

options concerning the generated browser information. Browser information needs to be generated for the symbol browser to work.

Assembler

Options concerning the reading of assembler blocks (-R on the command line) and the generated assembler (-A on the command line)

Under the tab pages, the Conditional denes entry box is visible; here symbols to dene can be entered. The symbols should be separated with semicolons. The syntax tab of the compiler options dialog is shown in gure (6.23).

In this dialog, the following options can be set:

Delphi 2 extensions on

Enables the use of classes and exceptions (-Sd (see page 5.1.5) on the command-line).

C-like operators

Allows the use of some extended operators such as +=, -= etc. (-Sc (see page 5.1.5) on the command-line).

Stop after rst error

when checked, the compiler stops after the rst error. Normally the compiler continues compiling till a fatal error is reached. (-Se (see page 5.1.5) on the command-line)

Allow label and goto

Allow the use of label declarations and goto statements (-Sg (see page 5.1.5) on the command line).

C++ styled inline

allows the use of inlined functions (-Sc (see page 5.1.5) on the command-line).

TP/BP 7.0 compatibility

Try to be more Turbo Pascal compatible (-So (see page 5.1.5) on the command-line).

Delphi compatibility

try to be more Delphicompatible (-Sd (see page 5.1.5) on the command-line).

Allow STATIC in objects

Allow the Static modier for object methods (-St (see page 5.1.5) on the command-line)

Strict var-strings

Not used.

Extended syntax

Not used.

Allow MMX operations

Allow MMX operations.

The code generation tab of the compiler options dialog is shown in gure (6.24).

In this dialog, the following options can be set:

Run-time checks

Controls what run-time checking code is generated. If such a check fails, a run-time error is generated. the following checking code can be generated:

Range checking

Code that checks the results of enumeration and subset type operations is generated (-Cr (see page 5.1.4) command-line option)

Stack checking

Code that checks whether the stack limit is not reached is generated (-Cs (see page 5.1.4) command-line option)

I/O checking

Code that checks the result of IO operations is generated. (-Ci (see page 5.1.4) command-line option).

Integer overow checking

The result of integer operations is checked (-Co (see page 5.1.4) command-line option)

Target processor

Set the target process for optimizations. The compiler can use dierent optimizations for dierent processors. This corresponds to the Op option.

i386/i486

Code is optimized for less than Pentium processors.

Pentium/pentiumMMX

Code is optimized for Pentium processors.

PPro/PII/c6x86/K6

Code is optimized for Pentium pro and higher processors.

Optimizations

What optimizations should be used when compiling:

Generate faster code

Corresponds to the -OG command-line option.

Generate smaller code

Corresponds to the -Og command-line option.

Use register variables

Corresponds to the -Or command-line option.

Uncertain optimizations

Corresponds to the -Ou command-line option.

Level 1 optimizations

Corresponds to the O1 command-line option.

Level 2 optimizations

Corresponds to the O1 command-line option.

More information on these switches can be found in section 5.1.4, page 92. The verbose tab of the compiler options dialog is shown in gure (6.25).

In this dialog, the following verbosity options (-v (see page 5.1.2) on the command-line) can be set:

Warnings

Generate warnings, corresponds to -vw on the command-line.

Notes

Generate notes, corresponds to -vn on the command-line.

Hints

Generate hints, corresponds to -vh on the command-line.

General info

Generate general information, corresponds to -vi on the command-line.

User,tried info

Generate information on used and tried les. Corresponds to -vut on the command-line.

All

Switch on full verbosity. Corresponds to -va on the command-line.

Show all procedure if error

If an error using overloaded procedure occurs, show all procedures. Corresponds to -vb on the command-line.

The browser tab of the compiler options dialog is shown in gure (6.26).

In this dialog, the browser options can be set:

No browser

(default) no browser information is generated by the compiler.

Only global browser

Browser information is generated for global symbols only, i.e. symbols dened not in a procedure or function (-b on the command-line)

Local and global browser

Browser information is generated for all symbols, i.e. also for symbols that are dened in procedures or functions (-bl on the command-line)

Remark: If no browser information is generated, the symbol browser of the IDE will not work.

The assembler tab of the compiler options dialog is shown in gure (6.27).

In this dialog, the assembler reader and writer options can be set:

Assembler reader

This allows to set the style of the assembler blocks in the sources:

Direct assembler

The assembler blocks are copied as-is to the output (-Rdirect on the command-line).

AT&T assembler

The assembler is written in AT&T style assembler (-Ratt on the command-line).

Intel style assembler

The assembler is written in Intel style assembler blocks (-Rintel on the command-line).

remark that this option is global, but locally the assembler style can be changed with compiler directives.

Assembler info

When writing assembler les, this option decides which extra information is written to the assembler le in comments:

List source

The source lines are written to the assembler les together with the generated assembler (-al on the command line).

List register allocation

The compilers internal register allocation/deallocation information is written to the assembler le (-ar on the command-line).

List temp allocation

The temporary register allocation/deallocation is written to the assembler le. (-at on the command-line).

The latter two of these options are mainly useful for debugging the compiler itself, it should be rarely necessary to use these.

Assembler output

This option tells the compiler what assembler output should be generated.

Use default output

This depends on the target.

Use GNU as

assemble using gnu as (-Aas on the command-line).

Use NASM co

produce NASM co assembler (go32v2, -Anasmcoff on the command-line)

Use NASM elf

produce NASM elf assembler (linux, -Anasmelf on the command-line).

Use NASM obj

produce NASM obj assembler (-Anasmobj on the command-line).

Use MASM

produce MASM (Microsoft assembler) assembler (-Amasm on the command-line).

Use TASM

produce TASM (Turbo Assembler) assembler (-Atasm on the command-line).

Use co

Write binary co les directly using the internal assembler (go32v2, -Acoff on the command-line).

Use peco

Write binary peco les les directly using the internal writer. (Win32)