TweetFollow Us on Twitter

May 96 Top 10
Volume Number:12
Issue Number:5
Column Tag:Symantec Top 10

Symantec Top 10

By Craig Conner and Scott Morison

Note: Source code files accompanying article are located on MacTech CD-ROM or source code disks.

With the release of 8.1, we thought we would run through some update questions for both Pascal and C/C++ PPC projects, and then look at some interesting features. We end with some 68K questions and a C++ language update.

Q: With the introduction of the Pascal drop-in for SPM, what is involved in porting Think Pascal code to the PPC?

A: First, we would like to thank Language Systems for creating the drop-in PPC Pascal compiler for SPM. Now, on to the answer. To port code involves several steps. First, you need to update your code following Apple’s recommended steps to migrate from 68K code to PowerPC code. Consult Chapter 3 of the Object Pascal.pdf file for more specific info. To ease this transition you can use the Universal Headers 2.1 that we released for Think Pascal and do the changes within the Think environment.

Second, when you create the project, you need to include the following libraries, or use the Project Model:

InterfaceLib

MathLib

PascalUPPGlue.o

PasLibx.o

PPCANSI.o

PPCRuntime.o

PPCunix.o

Third, you will need to add the relevant units into a USES statement both in your source code and in the project. (You can also use the {$I} syntax used by MPW to include files.)

Q: Can I use block comments in Language Systems Pascal?

A: Yes! LS Pascal is similar to MPW Pascal in that regard. Use braces, like this:

    {
    This is a
    block comment
    }

Q: I’m trying to update a project from 8.0.3 to 8.1, and I get the error message:

File "InterfaceLib.xcoff"

Error: the file was not found.

I also get the same message for the MathLib.xcoff and ObjectSupportLib.xcoff. Why is this?

A: You will need to replace InterfaceLib.xcoff with InterfaceLib, MathLib.xcoff with MathLib, and ObjectSupportLib.xcoff with ObjectSupportLib. These libraries have changed from xcoff library stubs to actual shared library stubs, so these files have lost the .xcoff extension. Remove the old libraries and add the new versions.

Q: Okay, I now have the right libraries, but I get a continuous stream of errors like this:

Prefix "PowerPC C++"; Line 1; While compiling "CStream_myContents.cpp"

Error: different configuration for precompiled header

A: The default precompiled header has the Exception Handling switch on, but most converted files convert with the switch off. You can find the switch by choosing Options from the Project menu and looking at the PowerPC C++ Language Settings. If that does not help it is time to re-precompile the header. To quickly precompile the header you can simply choose the Precompile Header script from the Scripts menu.

Q: Why do I now notice a pause and then a dialog box opening when entering variables in the data window?

A: SC++ 8.1 allows for deferring debugging file generation. This both speeds up compile times and limits the size of the compiled project. The downside is that when you ask for information from a file that doesn’t have debug information created yet, the debugger needs to take a moment and create it.

Q: I am using the SPM and trying to get my 68K application to link. ToolServer starts to open, and then it posts a dialog saying StdCLib could not be found. Why?

A: ToolServer 3.4 requires the StdCLibInit extension to be loaded in your Extensions folder. You can copy it from the 8.1 disk System Additions folder.

Q: The Apple Guide tutorials don’t show up in my Help menu. Why not?

A: For the SPM to load the Apple Guides, you need to have the AppleGuide extension loaded in your Extensions folder. Look for more Apple Guides in the future.

Q: My TPM project complains about not being able to find the ANSI library; what has changed?

A: The following TPM libraries’ names have been changed in a minor but important way:

ANSI-A4

ANSI-A4++

ANSI-small

ANSI-small++

CPlusLib-A4

These libraries all used to use em-dashes (option-hyphen) in their names instead of hyphens. Due to problems this causes on Japanese systems, the em-dashes have been changed to regular hyphens. Projects which use these libraries will have to remove and re-add them in order for TPM to be able to recognize the libraries with their new names.

Q: How do I use AppendDITL() in a Think Pascal project?

A: This call was new to System 7 and never really made it into the old toolbox library. It is, however, declared in the CommToolBox.lib. Here is the way to get it working.

Add CommToolBox.lib to your project.

Create a unit (or modify an existing one) that declares AppendDITL as external. Something like:

 unit myDeclarations;
 interface

 procedure AppendDITL(
 theDialog:DialogPtr; 
 theHandle:Handle; 
 method:integer);

 implementation

 procedure AppendDITL(
 theDialog:DialogPtr;
 theHandle:Handle;
 method:integer);
 external;

 end.

Notice that I changed the method parameter to an integer type, so that I would not have to declare DITLMethod also. (You may want to declare that, and the method constants also for elegance.)

Q: Do I still have to use the pragmas for instantiation of static templates?

A: No. The compiler now accepts template-explicit instantiation as outlined in the ANSI C++ draft standard (dated 9/26/95) Section 14.4 pp. 14-15. The following pre-8.1.0 statements:

 template <class T> void f(T t);
 template <class T> class X { };

 #pragma template_access public
 #pragma template f(int)
 #pragma template X<int>

are equivalent to:

 template <class T> void f(T t);
 template <class T> class X { };

 template void f(int);
 template class X<int>;

Note: The old method of using #pragma template directives continues to be supported.

Special thanks to: Glenn Austin, Michael Hopkins, Kevin Quah, and Mark Baldwin.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

How to get a high score in every level o...
Sky Charms is an adorable match three puzzler that provides a decent challenge thanks to its creative level design. It regularly presents something new, forcing you to think on your feet. [Read more] | Read more »
Apestorm: Full Bananas (Games)
Apestorm: Full Bananas 1.0 Device: iOS Universal Category: Games Price: $.99, Version: 1.0 (iTunes) Description: ***Launch sale – limited time only!*** Fugitive Apes have taken to the skies in search of revenge after humans have... | Read more »
How to create bigger words in Spellspire
Words have power. At least they do in Spellspire,a game about blasting out magical attacks by making words out of a jumble of letters. And it's a lot of fun. But if you want to be the best, you're going to have to think tactically when you start... | Read more »
Steel Media and DeePoon have partnered f...
Virtual reality is the next big thing, and 148Apps's publisher,Steel Media, wants to know what the hottest upcoming games are. [Read more] | Read more »
Airline Director 2 - Tycoon Game (Games...
Airline Director 2 - Tycoon Game 1.2.1 Device: iOS Universal Category: Games Price: $2.99, Version: 1.2.1 (iTunes) Description: Airline Director 2 is a management game set in the challenging field of commercial aviation. As the... | Read more »
Dog Mendonca (Games)
Dog Mendonca 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: [ Solve a criminal case beyond believe in this supernatural adventure game based on the popular graphic novel trilogy published... | Read more »
Amidakuji Knight (Games)
Amidakuji Knight 1.0 Device: iOS Universal Category: Games Price: $.99, Version: 1.0 (iTunes) Description: Ghost leg rules meets RPG!Select the best path and save a princess! A long long time ago, there was a beautiful and peaceful... | Read more »
The 5 best mobile games like Game of Thr...
Everyone's favourite weekly dosage of medieval depression, Game of Thrones, is back for its sixth season. An excellent time for the bloodthirsty! [Read more] | Read more »
How to approach quests in Fallen London
Sitting at over 1.5 million words, Fallen London is filled to the brim with intriguing tales and mysterious characters. From the start, you’ll find a slew of quests ripe for the taking. [Read more] | Read more »
How to survive in LOUD on Planet X
LOUD on Planet X is a hybrid of a tower defense and rhythm game that pits famous indie acts against invading aliens. You need timing and strategy in this game in order to succeed, things can get pretty overwhelming pretty quickly. Here are some... | Read more »

Price Scanner via MacPrices.net

Aleratec Releases Mac Software Upgrade for 1...
California based Aleratec Inc., designer, developer and manufacturer of Portable Device Management (PDM) charge/sync products for mobile devices and professional-grade duplicators for hard disk... Read more
Sale! Amazon offers 27-inch iMac, 13-inch 2.9...
Amazon has the 27″ 3.2GHz 5K iMac and the 13″ 3.9GHz Retina MacBook Pro on sale for $300 off MSRP, each including free shipping, for a limited time: - 27″ 3.2GHz/1TB HD 5K iMac (model MK462LL/A): $... Read more
Apple refurbished 13-inch Retina MacBook Pros...
Apple has Certified Refurbished 13″ Retina MacBook Pros available for up to $270 off the cost of new models. An Apple one-year warranty is included with each model, and shipping is free: - 13″ 2.7GHz... Read more
13-inch 2.7GHz/128GB Retina MacBook Pro on sa...
Take $200 off MSRP on the price of a new 13″ 2.7GHz/128GB Retina MacBook Pro (model MF839LL/A) at Amazon. Shipping is free: - 13″ 2.7GHz/128GB Retina MacBook Pro: $1099.99 $200 off MSRP Act now if... Read more
Apple refurbished clearance 15-inch Retina Ma...
Apple has Certified Refurbished 2014 15″ 2.2GHz Retina MacBook Pros available for $1609, $390 off original MSRP. Apple’s one-year warranty is included, and shipping is free. They have refurbished 15... Read more
27-inch 5K iMacs on sale for up to $150 off M...
B&H Photo has 27″ 5K iMacs on sale for up to $150 off MSRP including free shipping plus NY sales tax only: - 27″ 3.3GHz iMac 5K: $2199 $100 off MSRP - 27″ 3.2GHz/1TB Fusion iMac 5K: $1849.99 $150... Read more
What Does The Refreshed 12-Inch MacBook Tell...
A lot of commentators are complaining that Apple’s update of the 12-Inch MacBook last week is a bit of a damp squib. I don’t know what they were expecting, since it would be very unlike Apple to do a... Read more
Free Wittify Keyboard Now Available On The Ap...
A team of Harvard Business School students have announced that the Wittify Keyboard, a new app utility for iOS devices, is now available on the Apple App Store. The Wittify keyboard and application... Read more
Apple Reports First Year-Over-Year Quarterly...
Apple on TUesday announced financial results for its fiscal 2016 second quarter ending March 26, 2016. The Company posted quarterly revenue of $50.6 billion and quarterly net income of $10.5 billion... Read more
13-inch 2.7GHz Retina MacBook Pros on sale fo...
Take $130-$150 off MSRP on the price of a new 13″ 2.7GHz Retina MacBook Pro at Amazon. Shipping is free: - 13″ 2.7GHz/128GB Retina MacBook Pro: $1169 $130 off MSRP - 13″ 2.7GHz/256GB Retina MacBook... Read more

Jobs Board

*Apple* Retail - Multiple Positions - Apple,...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Restaurant Manager (Neighborhood Captain) - A...
…in every aspect of daily operation. WHY YOU'LL LIKE IT: You'll be the Big Apple . You'll solve problems. You'll get to show your ability to handle the stress and Read more
*Apple* Solutions Consultant - … (United Sta...
Job Summary As an Apple Solutions Consultant, you'll be the link between our future customers and our products. You'll showcase your entrepreneurial spirit as you Read more
Restaurant Manager (Neighborhood Captain) - A...
…in every aspect of daily operation. WHY YOU'LL LIKE IT: You'll be the Big Apple . You'll solve problems. You'll get to show your ability to handle the stress and Read more
Restaurant Manager (Neighborhood Captain) - A...
…in every aspect of daily operation. WHY YOU'LL LIKE IT: You'll be the Big Apple . You'll solve problems. You'll get to show your ability to handle the stress and Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.