annotate modules/README @ 2881:0e0af7cbfd1b

[xemacs-hg @ 2005-08-01 16:28:18 by darrylo] On some (64-bit) systems, sizeof(int) != sizeof(long), and this can cause crashes because in-use lisp objects can get prematurely gc'd (and 0xdeadbeef'd). This occurs because the memory_description for the Gap_Array structure incorrectly describes some members as XD_INT's (32-bit objects), when they should actually be XD_ELEMCOUNT's and XD_BYTECOUNT's (both 64-bit objects), as that is how they are declared in the structure.
author darrylo
date Mon, 01 Aug 2005 16:28:21 +0000
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children da1365dd3f07
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1 This directory contains a number of XEmacs dynamic modules. These
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2 modules can be loaded directly with the command 'M-x load-module'.
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3 However, the preferred method of loading a module is to issue a
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4 "(require 'module-name)" command to the Lisp interpreter. This will
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5 store information so that a later "(unload-feature 'module-name)" can
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6 succeed.
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8 To compile one of these modules, simply enter the desired directory,
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9 type 'configure', and then 'make'. If you are building the module for
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10 an installed XEmacs, then 'make install' will place the module in the
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11 appropriate directory for XEmacs to find it later (assuming you have
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12 permission to write to that directory). A subsequent 'load-module' or
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13 'require' will then load the module, as described above.
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15 Each of these demonstrates different features and limitations of the
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16 XEmacs module loading technology. For a complete discussion on XEmacs
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17 dynamic modules, please consult the XEmacs Module Writers Guide, which
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18 can be found in the ../info directory.
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19
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20 For those wanting to get started with module writing, please see the
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21 'sample' directory. It contains two subdirectories: internal and
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22 external. The 'internal' subdirectory contains the framework needed to
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23 migrate some core piece of XEmacs functionality into code that can
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24 either be compiled into the core or built as a separate module. The
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25 'external' subdirectory contains the somewhat simpler framework needed
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26 to build a module separately from XEmacs. These should be considered
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27 starting places for module writing.