October 2000
Intermediate to advanced
432 pages
9h 9m
English
book
GNU Autoconf, Automake, and Libtool
by Gary V. Vaughan, Ben Elliston, Tom Tromey, Ian Lance Taylor
Content preview from GNU Autoconf, Automake, and Libtool
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17.4. dlpreopen Loading
On machines that do not have any facility for shared libraries or dynamic modules, libltdl allows an application to lt_dlopen modules, provided that the modules are known at link time. This works by linking the code for the modules into the application in advance, and then looking up the addresses of the already loaded symbols when lt_dlsym is called. We call this mechanism dlpreopening—so named because the modules must be loaded at link time, not because the API to use modules loaded in this way is any different.
This feature is extremely useful for debugging, enabling you to make a fully statically linked application from the executable and module objects, without changing any source code to work around the module-loading ...
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