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README.md

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About this directory

Use file in this directory as described below to build:

  • The icon=9.5.2 conda package in the eschen42 channel.
  • ..\bin\nticont.exe
  • ..\bin\nticonx.exe
  • ..\icont.exe
  • ..\iconx.exe

Known Bugs

  • nticont.exe and nticonx.exe are not compatible with files on Google Drive.
  • The convenience scripts do not take into account the fact that the spaces in My drive and Shared drives are preserved even when batch files call for spaceless names.

How to build the icon=9.5.2 package in the eschen42 conda channel

The icon-9.5.2 package in the eschen42 conda channel is built from the master branch on GitHub by running:

conda_build_portableIcon_master.cmd

which extracts the conda recipe, downloads the zip of the HEAD and invokes conda-build.

About ..\bin and .\icon\config\cygwin_portable

To build ..\bin\nticont.exe and ..\bin\nticonx.exe, copy icon\config\cygwin_portable to into the corresponding directory in the Icon source tree of Icon 9.5.2 and compile within the Cygwin 3.2.0 environment, which links them to that environment's cygwin1.dll. Note that their functionality on Microsoft Windows outside of the Cygwin environment is somewhat limited.

Cygnal is Kaz Kylheku's "Cygwin Native Application Layer" that

provides a patched cygwin1.dll object which changes some of the [Cygwin cygwin1.dll] behaviors such that they make sense in the context of a Windows application. Cygwin executables do not have to be recompiled to use the Cygnal library. They just have to be bundled with it; it is a drop-in replacement.

For information regarding the "Cygwin Native Application Library", see the Cygnal project homepage http://www.kylheku.com/cygnal/.

The ..\bin\cygwin1.dll is a renamed copy of the Cygnal DLL (http://www.kylheku.com/cygnal/cygwin1-3-1-98-64bit.dll, having SHA256 checksum 6929bf6781c322597584dcb71fbe36f836017a4704bcaad2ca5959b4aa390d30) provided for running these executables outside the context of Cygwin. This version corresponds only to the cygwin1.dll from Cygwin 3.2.0, which is to say that it only works with executables linked against the Cygwin 3.2.0 cygwin1.dll. Because this DLL is derived from the Cygwin DLL, it is licensed under LGPLv3, making it freely distributable with the license notice; see https://cygwin.com/licensing.html.

To build Icon extensions, you will need to use the Cygwin 3.2.0 environment.

About .\callcmd.c

This is the code to build ..\icont.exe and ..\iconx.exe as explained below.

Purpose of callcmd.c

If the name of a batch file is invoked from another batch file without a the word call and without piped standard input, execution will not resume in the invoking batch file after the invoked batch file finishes.

Note that, when a filename ending in .exe appears in the same directory as a filename ending in .cmd, invoking the filename (without extension) will result in the execution of the .exe file.

This program enables "natural" invocation of a program name from a batch file without worrying whether whether the name refers to a .exe or a .cmd.

This program enables natural invocation of a program name from a batch file without worrying whether whether the name refers to a .exe, a .bat, or a .cmd. Note that, if both .bat and .cmd exist, .bat takes priority.

Building callcmd.c

To compile callcmd.c with MinGW64 (installed as described below), use these commands:

:: strip out debugging and discarded symbols
gcc  -o ..\iconx.exe -Wl,--strip-all callcmd.c
:: same code for icont.exe
copy /y ..\iconx.exe ..\icont.exe

To install Mingw64, target platform x86_64-w64-mingw32 by running the MinGW installer (downloadable at https://sourceforge.net/projects/mingw-w64/) using these settings:

Figure 1

https://web.archive.org/web/20210811153809im_/https://azrael.digipen.edu/~mmead/www/public/mingw/mingw64-install-2-8.1.png

Figure 1 - Settings for installation of MingW64 to target platform x86_64-w64-mingw32