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	DYNAMICALLY LINKED LIBRARY - Definition
		(DLL) A library which is linked to application programs when they are loaded or run rather than as the final phase of compilation.
		The executable is compiled with a library of "stubs" which allow link errors to be detected at compile-time.
		Examples of operating systems using dynamic linking are sunos (.so - shared object files), microsoft windows (.dll) and risc os on the acorn archimedes (relocatable modules).
	www.hyperdictionary.com /dictionary/Dynamically+Linked+Library (180 words)

	Guile Reference Manual
		When using the low level procedures to do your dynamic linking, you have complete control over which library is loaded when and what gets done with it.
		on a dynamically linked library, it is marked as
		This glue library could then be dynamically linked into a vanilla Guile interpreter and activated by calling its initialization function.
	www.delorie.com /gnu/docs/guile/guile_362.html (594 words)

	Library (computer science) Summary
		There are two main types of libraries: static libraries that are read by the compiler at compile-time and bound into the final version of the executable code; and dynamic libraries that are referred to by name to the compiler but the code is not actually incorporated into the executable until the program is run.
		Dynamic linking means that the data in a library is not copied into a new executable or library at compile time, but remains in a separate file on disk.
		The request to load such a dynamically linked library may be made implicity at compile-time, or explicitly by the application at run-time.
	www.bookrags.com /Library_(computer_science) (4155 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal (Site not responding. Last check: )
		Dynamic linking means that the data (code) in a library is not copied into a new executable or library at compile time, but remains in a separate file on disk.
		Some operating systems can only link in a library at loadtime, before the process starts executing; others may be able to wait until after the process has started to execute and link in the library just when it is actually referenced (i.e., during runtime).
		Dynamic loading is a subset of dynamic linking where a dynamically linked library loads and unloads at run-time on request.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=library_(computer_science) (2879 words)

	Dynamic Linking and Loading
		Dynamically linked shared libraries are easier to update than static linked shared libraries.
		Since dynamic shared libraries are so easy to update compared to unshared or static shared libraries, it's easy to change libraries that are in use by existing programs, which means that the behavior of those programs changes even though "nothing has changed".
		From the library's dynamic segment, it adds the library's symbol table to the chain of symbol tables, and if the library requires further libraries not already loaded, adds any new libraries to the list to be loaded.
	iecc.com /linker/linker10.html (6526 words)

	Dynamic Linking and Loading
		When the linker builds an executable or DLL, it creates in the text section a table of misnamed "thunks", indirect jumps through the entries in the import address table, and uses the addresses of the thunks as the address of the imported routine, which is transparent to the programmer.
		This is basically the static linked library approach from Chapter 9, except that in case of address space collisions, rather than the program failing the dynamic linker moves the libraries at some loss of performance.
		At run-time, nearly all of the Windows dynamic linker is in the operating system, while the ELF dynamic linker runs entirely as part of the application, with the kernel merely mapping in the initial files.
	www.iecc.com /linker/linker10.html (6526 words)

	The Technology behind LynxOS v4.0's Linux ABI compatibility
		The resolution of these shared library dependencies in Linux is done by the run-time linker and loader (ld-linux.so), which loads all the required dynamic libraries used by the application into memory, and resolves all unresolved references with these libraries.
		Dynamically linked applications identify the run-time linker and loader (ld.so) in the application's file format at build-time.
		Dynamically linked libraries in Linux provide additional sets of API functions that applications can dynamically link to, and the system call binding between Linux applications and the Linux kernel.
	www.linuxdevices.com /articles/AT8943314364.html (2354 words)

	Creating and linking with archive and dynamically linked libraries
		Even if the dynamically linked C library were enhanced in the future, you would not have to relink programs that depended on it as long as the enhancements were compatible with your code.
		directs the link editor to record in your executable the filename of the dynamically linked library with which it is to be linked at run time.
		When you use the -l option to link your program with a dynamically linked library, not only must the link editor be told which directory to search for that library, so must the dynamic linker (unless the directory is the standard place, which the dynamic linker searches by default).
	docsrv.sco.com:507 /en/tools/ccs_linkedit_shlibs.html (787 words)

	CS372 DLL (Site not responding. Last check: )
		A program library is a collection of function and class definitions that are intended to be used by other programs (client programs).
		Such an extension of code with standardized shared code is the case of a statically linked library, because following the compilation phase, the linker connects the object code of the library into the actual executable.
		If they are not, the library and dll files can be placed in the same folder as the client code (together with the header file) and used directly.
	www.uwgb.edu /breznayp/cs372/DLL.htm (374 words)

	Dynamically Linked Libraries
		Dynamically linked libraries are typically placed in one a few special directories.
		There are special conventions for naming libraries and having symbolic links for them, with the result that you can update libraries and still support programs that want to use old, non-backward-compatible versions of those libraries.
		The GNU glibc library determines if a program is setuid or setgid by checking the program's credentials; if the UID and EUID differ, or the GID and the EGID differ, the library presumes the program is setuid/setgid (or descended from one) and therefore greatly limits its abilities to control linking.
	www.dwheeler.com /secure-programs/Secure-Programs-HOWTO/dlls.html (762 words)

	Sybase.com
		It also describes the differences between the statically linked runtime library and the dynamically linked runtime library.
		The unique aspects of the remote database are still linked into the executable but common code is referenced out of the DLL rather than linking in unique versions into the executable directly.
		However, if you use the DLL version of the library, all the UltraLite applications must use the same DLL version: you cannot mix different versions of the DLL library.
	www.sybase.com /detail?id=47970 (730 words)

	Minimize the library's data segment
		As noted, only the text segment of a dynamically linked library is shared by all processes that use it; its data segment typically is not.
		Every process that uses a dynamically linked library usually gets a private memory copy of its entire data segment, regardless of how much data is needed.
		If a dynamically linked library imports definitions from another dynamically linked library, each process that uses it gets a private copy not only of its data segment, but of the data segment of the dynamically linked library from which the definitions were imported.
	docsrv.sco.com:507 /en/tools/ccs_linkedit_minimize_lib_data_segment.html (674 words)

	A Dynamically Linkable Graphics Library
		As the graphics functions were separately linked from the main program no information was available on the memory size required by them and thus the memory references to the main programs static variables and those of the graphics functions overlapped.
		The assembly file that is linked to a library in order to produce the driver file is generated on the fly.
		The dynamic linking capability was found to be easy and efficient to use and resulted in better and more portable programs.
	www.spinellis.gr /pubs/tr/porgrlib/html/porgrlib.html (3860 words)

	OSXFAQ - Technical News and Support for Mac OS X
		Dynamically linked libraries, unlike statically linked libraries, are Mach-O format files and not ar(5) format files.
		Dynamically linked libraries have two restric- tions: No symbol may be defined in more than one object file and no common symbol can be used.
		The way libraries use to be created, errors were possible if the library was modified with ar(1) and the table of contents was not updated by rerunning ranlib(1).
	www.osxfaq.com /man/1/ranlib.ws (1509 words)

	man: ranlib
		Dynamically linked libraries have two restrictions: No symbol may be defined in more than one object file and no common symbol can be used.
		To maximize sharing of a dynamically linked shared library the objects should be compiled with the -dynamic flag of cc(1) to produce indirect undefined refer- ences and position-independent code.
		When building a dynamic library, if this is specified with a specific cpusubtype other than the family cpusubtype then libtool it does not use the ld(1) -force_cpusubtype_ALL flag and passes the -arch_only argument to ld(1) as the -arch flag so that the output is tagged with that cpusubtype.
	www.hmug.org /man/1/ranlib.php (1514 words)

	Definition for Dynamic Linked Library (Site not responding. Last check: )
		A DLL is a Dynamically Linked Library, which is a type of program file that is loaded and executed on demand.
		It requests that the DLL be loaded into the computer's memory and made available for it to use.
		Other operating systems use similar techniques to this for dynamic modules, but may be referred to by a variety of other names.
	www.xcclassified.com /Glossary/Dynamic_Linked_Library (78 words)

	Linking with dynamically linked libraries (Site not responding. Last check: )
		This option also instructs the compiler to produce object files in ELF format, the only object file format for which dynamic linking is supported.
		Because of the -dy option, the link editor chooses the dynamically linked library implementation of a library, libx.so, in preference to the archive library implementation, libx.a, in the same directory.
		Other dynamically linked libraries are also supplied with the operating system, and usually are kept in the standard places.
	docsrv.caldera.com:507 /en/tools/ccs_linkedit_defaults.html (425 words)

	ITworld.com - Which is better, static or dynamic linking?
		By using the default configurations of libraries which are dynamically linked, you are insulated from bugs or limitations in the implementation which would otherwise become part of your program.
		A property of dynamic linking is that it defines the dependencies between software modules that are expressed in terms of the interfaces through which they interact rather than a (often very temporal) relationship based on the status and behavior of the implementation.
		Calls into the library routines have a little less overhead if they are linked together directly, and start-up time is reduced as there is no need to locate and load the dynamic libraries.
	www.itworld.com /Comp/2377/UIR960201perf/pfindex.html (1985 words)

	Dynamically linked and shared compression/decompression - Patent 5539908
		dynamically selecting one of the CODEC procedures from an entry in the linked library to carry out an application software requirement.
		The present innovative procedure for handling the varied CODEC routines is a dynamically linked library (DLL) installed as an entry in the system initialization file.
		The ability to control the locations within the frame, where the video quality is degraded as compression is increased, is desirable to obtain a compromise between the obtained compression and video quality.
	www.freepatentsonline.com /5539908.html (2851 words)

	Modularization Techniques
		It can even be used to eliminate all link time dependencies on the class and its factory entirely.
		Once you've set a factory, moving it to a DLL is a relatively trivial thing.
		The implementation takes into consideration two things when deciding whether or not a DLL can be unloaded: Whether any of its factories are currently in use, and whether anyone has locked the server.
	www.mozilla.org /docs/modunote.htm (2039 words)

	Shared objects for the object disoriented!
		Some of these libraries are provided by the system and some are written by third-party vendors or the users themselves.
		During the process of compilation these libraries are linked into the application.
		If super user permission is not there, the shared library can be installed in any directory, but another set has to performed before executables using this shared library can be run.
	www.ibm.com /developerworks/linux/library/l-shobj (2261 words)

	Shared objects for the object disoriented!
		If an application were to use a lot of libraries, and all code were linked in, the size of the application would become prohibitive.
		In comes the "shared Library," which is not linked into the application source but loaded dynamically at the moment it's required by the application.
		It would be much better if there were a mechanism by which the libraries could be dynamically loaded into the memory as they are needed, which would reduce the memory footprint of the program and also break the application into smaller parts.
	www-128.ibm.com /developerworks/linux/library/l-shobj (2253 words)

	[No title] (Site not responding. Last check: )
		There are two kinds of ways to link functions from a library into a user's program: statically and dynamically.
		Each OS uses a different strategy to dynamically provide the application with the current address of the library routine, but all essentially use a jumptable of addresses.
		That is, ALL addresses in the linked executable file are virtual addresses and during the execution of each instruction, the address translation hardware will translate ('map') the virtual address referenced in this instruction into the "real" (physical) address that corresponds to where the instruction/data is currently loaded.
	www.cs.utexas.edu /users/chris/cs310/f2001/lec/39.txt (783 words)

	Shared objects for the object disoriented!
		A relocatable file holds code and data suitable to be linked with other object fields to create an executable or shared object file, or another relocatable object.
		Using static compilation, the size of the final executable becomes pretty large and all of it has to be loaded into the memory at runtime, so regardless of whether a function is being used or not, its code is in the memory.
		Generally, this is a link to the soname.
	www-106.ibm.com /developerworks/linux/library/l-shobj (2253 words)

	Regular DLLs Dynamically Linked to MFC(Visual C++ Programmer's Guide) (Site not responding. Last check: )
		Unlike the statically-linked regular DLL, this type of DLL is dynamically linked to the MFC DLL (also known as the shared MFC DLL).
		A DLL that is dynamically linked to MFC cannot also statically link to MFC.
		When building a regular DLL that dynamically links to MFC, you need to use the macro AFX_MANAGE_STATE to switch the MFC module state correctly.
	msdn.microsoft.com /library/en-us/vccore98/html/_core_regular_dlls_dynamically_linked_to_mfc.asp?frame=true (737 words)

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