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BUILDING FILTER FOUNDRY ON OPENWATCOM
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by Peter Heckert and Daniel Marschall
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Most recently tested with OpenWatcom 1.9 with Adobe Photoshop SDK CC 2017
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Prerequisites:
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================
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1) Flex and Bison
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Available here:
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https://sourceforge.net/projects/winflexbison/
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2) Adobe Photoshop SDK
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Available on some Photoshop CDs, or can be downloaded at
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https://www.adobe.com/devnet/photoshop/sdk.html
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3) Watcom 1.6beta RC1 or later
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Available here:
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http://www.openwatcom.org/
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4) SVN client
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After installing Watcom get the command line svn client:
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https://tortoisesvn.net/index.de.html
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After installing all these reboot, or set the environment manually
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How to get FilterFoundry:
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===========================
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Make a directory anywhere for telegraphics plugins, remember, no spaces in pathname
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cd into the directory.
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type
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svn checkout https://www.telegraphics.com.au/svn/common/trunk common
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svn checkout https://www.telegraphics.com.au/svn/filterfoundry/trunk filterfoundry
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Build setup:
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==============
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Hint:
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  If you never used Watcom to build Photoshop plugins best start with the
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  countcolours plugin and ensure it compiles. Read the HowTo.
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  Look for it at https://www.telegraphics.com.au/sw/ or get it with
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  svn checkout https://www.telegraphics.com.au/svn/countcolours/trunk countcolours
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1. Open filterfoundry.wpj in Watcom's IDE.
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2. In menu File->Before set the path to your Photoshop SDK,
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   Flex and Bison.
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   If this doesn't work (there seem to be a bug in OpenWatcom 1.9 where you can only make the
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   text smaller, but not bigger), you have to edit the WPJ file with an text editor.
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   Remember how many characters you have added or deleted, and subtract or add them
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   to the number written above the before-instructions (currently 445).
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3. Thats all, you can build the project then.
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Troubleshooting:
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==================
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- If you get the error message "Fatal Error! 62:  Unable to open 'sdkddkver.h'", please open
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  pluginsdk\photoshopapi\photoshop\PITypes.h in your Adobe Photoshop SDK and
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  comment out the line "#include <sdkddkver.h> // for WINVER",
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  or use an older Photoshop SDK.
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- It is important that the correct calling convention is used.
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  The calling convention needs to be set in
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  Options -> C Compiler Switches -> Memory Model and Processor Switches.
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  There, select "Pentium Pro stack-based calling" (default is "Pentium Pro register based calling").
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  The wpj project should already have this setting applied.
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- If you receive the error message "lex.yy.c(580): Error! E1009: Expecting ';' but found '1'",
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  check if the compiler directive "YY_SKIP_YYWRAP" is set.
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  Go to Options -> C Compiler Switches -> Source switches , and add YY_SKIP_YYWRAP=1 .
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  The wpj project should already have this setting applied.
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Remarks
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=========
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flex and bison are currently invoked as batch process.
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This is defined in the menu File->Before.
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The ide fails to build the project when filenames contain more than one dot.
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Therefore the output files of bison and lex are renamed.
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There is no error checking done.
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Probably it would be better to write a small wmake file for this purpose.