Friday, February 18, 2011

CA-Compiler - Arguments Listing & Compiler Options

CA-Clipper Compiler--CLIPPER.EXE
 Compiles one or more program files (.prg) containing procedures and user-
 defined functions to form an object file (.OBJ).

 CLIPPER [<sourceFile> | @<scriptFile> [<option list>]]

<scriptFile> is the name of an ASCII text file containing a list of
     source files to compile into a single object file.  The default
     extension for this file is (.clp).

     <option list> is a list of one or more options to control the course
     of the compilation, all of which are described below.  To get a list of
     options, specify the compiler command line with no arguments.

 Compiler Options

     All options are shown in uppercase preceded by a slash (/).  Note,
     however, that options are not case-sensitive and that you can replace
     the slash with a dash (-) if you prefer.

     Some compiler options have arguments.  If an option has arguments,
     specify them after the option, with no space between the option and
     its first argument.


     Declares any variable included in a PRIVATE, PUBLIC, or PARAMETERS
     statement as MEMVAR.


     Includes debugging information in the object file.


     Defines an identifier to the preprocessor with  assigned to the
      if specified.


     Specifies the severity level of warnings.

     If  is 0 or omitted, the compiler does not set the DOS
     ERRORLEVEL upon exit if warnings are encountered.  This is the default
     behavior of the compiler.

     If  is 1, the compiler sets the DOS ERRORLEVEL upon exit
     if warnings are encountered but still generates an .OBJ file.

     If  is 2, the compiler sets the DOS ERRORLEVEL upon exit
     if warnings are encountered and does not generate an .OBJ file.  This
     effectively promotes warnings to error status.

     Adds the specified directory to the front of the INCLUDE path list.
     Multiple /I options can be specified in the same compiler session to
     specify several header file search directories.


     Excludes the program source code line numbers from the object file.


     Compiles only the current program file (.prg) suppressing automatic
     search for program files (.prg) referenced in a program file with the
     DO, SET FORMAT, and SET PROCEDURE commands.


     Suppresses the automatic definition of a procedure with the same name as
     the program file (.prg).


     Defines the name and/or location of the output object file.


     Preprocesses the program file (.prg) and copying the result to an output
     file with a (.ppo) extension.


     Prevents line numbers from displaying while compiling.


     Embeds a library search request in the object file.  If /R is specified
     without  name, the default requests for CLIPPER.LIB,
     EXTEND.LIB, DBFNTX.LIB, and TERMINAL.LIB are suppressed.  Multiple /R
     options can be specified in the same compiler session to embed more
     than one library request.


     Checks the syntax of the current (.prg) file and no object file is


     Specifies a different directory for temporary files generated during


     Identifies an alternate standard header file to preprocess in place of
     the supplied STD.CH which is used automatically.


     Forces the compiler to assume all references to undeclared or unaliased
     variable names are public or private variables.


     Generates warning messages for undeclared or unaliased (ambiguous)
     variable references.


     Suppresses shortcutting optimizations on the logical operators .AND. and
     .OR.  This option is provided as an aid to isolating code that depends
     on the behavior of older versions of CA-Clipper.

More at

1 comment:

  1. Can I Compile my all .prg file only one command?
    Please help.


Welcome to Clipper... Clipper... Clipper

In 1997, then using Delphi 3, I had already created 32-bits Windows applications for HRIS, ERP and CRM. In 2007, using Ruby on Rails, an AJAX powered CRM site running on Apache & MySQL was created and I am now using Visual Studio .Net 2008 to create web-based projects and Delphi 7 for Win32 applications using SQL2005 & DBFCDX.

So, why then am I reviving the Original Clipper... Clipper... Clipper via a Blog as CA-Clipper is a programming language for the DOS world ? Believe it or not, there are still some clients using my mission-critical CA-Clipper applications for DOS installed in the late 80's and up to the mid 90's. This is testimony to CA-Clipper's robustness as a language :-)

With the widespread introduction of Windows 7 64-bits as the standard O/S for new Windows based PCs & Notebooks, CA-Clipper EXE simply will not work and it has become imperative for Clipper programmers to migrate immediately to Harbour to build 32/64 bits EXEs

Since 28th January 2009, this blog has been read by 134,389 (10/3/11 - 39,277) unique visitors (of which 45,151 (10/3/11 - 13,929) are returning visitors) from 103 countries and 1,574 cities & towns in Europe (37; 764 cities), North America (3; 373 cities) , Central America & Caribeans (6; 13 cities), South America(10; 226 cities), Africa & Middle-East (12; 44 cities) , Asia-Pacific (21; 175 cities). So, obviously Clipper is Alive & Well : -)

TIA & Enjoy ! (10th October 2012, 11:05; 13th November 2015)

Original Welcome Page for Clipper... Clipper... Clipper

This is the original Welcome Page for Clipper... Clipper... Clipper, which I am republishing for historical and sentimental reasons. The only changes that I have made was to fix all the broken links. BTW, the counter from is still working :-)

Welcome to Chee Chong Hwa's Malaysian WWW web site which is dedicated to Clipperheads throughout the world.

This site started out as a teeny-weeny section of Who the heck is Chee Chong Hwa ? and has graduated into a full blown web site of more than 140 pages (actually hundreds of A4 size pages) ! This is due to its growing popularity and tremendous encouragements from visiting Clipperheads from 100 countries worldwide, from North America, Central America, Caribbean, South America, Europe, Middle-East, Africa and Asia-Pacific. Thanx Clipperheads, you all made this happen !

What is Clipper ?

You may ask, what is this Clipper stuff ? Could Clipper be something to do with sailing as it is the name of a very fast sailing American ship in the 19th century ?

Well, Clipper or to be precise, CA-Clipper is the premier PC-Software development tool for DOS. It was first developed by Nantucket Corporation initially as a compiler for dBase3+ programs. Since then, CA-Clipper has evolved away from its x-base roots with the introduction of lexical scoping & pre-defined objects like TBrowse. As at today, the most stable version ofClipper is 5.2e while the latest version, 5.3a was introduced on 21 May 1996.

As at 11th November, 1996, an unofficial 5.3a fixes file was made available by Jo French. See the About CA-Clipper 5.3a section for more details. BTW, Jo French uploaded the revised 5.3a fixes file on 20th November, 1996.

Latest News

The latest news is that CA has finally released the long-awaited 5.3b patch on 21 May, 1997.

For 5.3b users, you must a take a look at Jo French's comments on unfixed bugs in 5.3b.

BTW, have you used Click ? If you're a serious Clipperprogrammer and need an excellent code formatter, Click is a natural choice. How to get it ? Simple, access Phil Barnett's site via my Cool Clipper Sites.

32-bits Clipper for Windows ?

Have you tried Xbase ++ ? Well, I have and compared to Delphi (my current Windows programming tool of choice), I'm still sticking to Delphi.

Anyway, you should visit the Alaska Home Page. Give it a chance and then draw your own conclusions !.

The Harbour Project

Is this the future of Xbase ? Take a look at at the Harbour Project

You are Visitor # ...

According to, you are visitor since 3 June 1996.

If you like or dislike what you see on this website, please drop me a line by clicking the email button at the bottom of this page or better still, by filling out the form in my guest book. If you are not sure what to write,click here to take a look at what other Clipperheads have to say.