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pkg::create(1t) [opensolaris man page]

pkg::create(1T) 					       Tcl Built-In Commands						   pkg::create(1T)

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NAME
pkg::create - Construct an appropriate package ifneeded command for a given package specification SYNOPSIS
::pkg::create -name packageName -version packageVersion ?-load filespec? ... ?-source filespec? ... _________________________________________________________________ DESCRIPTION
::pkg::create is a utility procedure that is part of the standard Tcl library. It is used to create an appropriate package ifneeded com- mand for a given package specification. It can be used to construct a pkgIndex.tcl file for use with the package mechanism. OPTIONS
The parameters supported are: -name packageName This parameter specifies the name of the package. It is required. -version packageVersion This parameter specifies the version of the package. It is required. -load filespec This parameter specifies a binary library that must be loaded with the load command. filespec is a list with two elements. The first element is the name of the file to load. The second, optional element is a list of commands supplied by loading that file. If the list of procedures is empty or omitted, ::pkg::create will set up the library for direct loading (see pkg_mkIndex). Any num- ber of -load parameters may be specified. -source filespec This parameter is similar to the -load parameter, except that it specifies a Tcl library that must be loaded with the source com- mand. Any number of -source parameters may be specified. At least one -load or -source parameter must be given. SEE ALSO
package(1T) KEYWORDS
auto-load, index, package, version ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWTcl | +--------------------+-----------------+ |Interface Stability | Uncommitted | +--------------------+-----------------+ NOTES
Source for Tcl is available on http://opensolaris.org. Tcl 8.3 pkg::create(1T)

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load(n) 						       Tcl Built-In Commands							   load(n)

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NAME
load - Load machine code and initialize new commands. SYNOPSIS
load fileName load fileName packageName load fileName packageName interp _________________________________________________________________ DESCRIPTION
This command loads binary code from a file into the application's address space and calls an initialization procedure in the package to incorporate it into an interpreter. fileName is the name of the file containing the code; its exact form varies from system to system but on most systems it is a shared library, such as a .so file under Solaris or a DLL under Windows. packageName is the name of the package, and is used to compute the name of an initialization procedure. interp is the path name of the interpreter into which to load the package (see the interp manual entry for details); if interp is omitted, it defaults to the interpreter in which the load command was invoked. Once the file has been loaded into the application's address space, one of two initialization procedures will be invoked in the new code. Typically the initialization procedure will add new commands to a Tcl interpreter. The name of the initialization procedure is determined by packageName and whether or not the target interpreter is a safe one. For normal interpreters the name of the initialization procedure will have the form pkg_Init, where pkg is the same as packageName except that the first letter is converted to upper case and all other letters are converted to lower case. For example, if packageName is foo or FOo, the initialization procedure's name will be Foo_Init. If the target interpreter is a safe interpreter, then the name of the initialization procedure will be pkg_SafeInit instead of pkg_Init. The pkg_SafeInit function should be written carefully, so that it initializes the safe interpreter only with partial functionality provided by the package that is safe for use by untrusted code. For more information on Safe-Tcl, see the safe manual entry. The initialization procedure must match the following prototype: typedef int Tcl_PackageInitProc(Tcl_Interp *interp); The interp argument identifies the interpreter in which the package is to be loaded. The initialization procedure must return TCL_OK or TCL_ERROR to indicate whether or not it completed successfully; in the event of an error it should set the interpreter's result to point to an error message. The result of the load command will be the result returned by the initialization procedure. The actual loading of a file will only be done once for each fileName in an application. If a given fileName is loaded into multiple interpreters, then the first load will load the code and call the initialization procedure; subsequent loads will call the initialization procedure without loading the code again. It is not possible to unload or reload a package. The load command also supports packages that are statically linked with the application, if those packages have been registered by calling the Tcl_StaticPackage procedure. If fileName is an empty string, then packageName must be specified. If packageName is omitted or specified as an empty string, Tcl tries to guess the name of the package. This may be done differently on different platforms. The default guess, which is used on most UNIX platforms, is to take the last element of fileName, strip off the first three characters if they are lib, and use any following alphabetic and underline characters as the module name. For example, the command | load libxyz4.2.so uses the module name xyz and the command load bin/last.so {} uses the module name last. If fileName is an empty string, then packageName must be specified. The load command first searches for a statically loaded package (one | that has been registered by calling the Tcl_StaticPackage procedure) by that name; if one is found, it is used. Otherwise, the load com- | mand searches for a dynamically loaded package by that name, and uses it if it is found. If several different files have been loaded with | different versions of the package, Tcl picks the file that was loaded first. PORTABILITY ISSUES
Windows When a load fails with "library not found" error, it is also possible that a dependent library was not found. To see the dependent libraries, type ``dumpbin -imports <dllname>'' in a DOS console to see what the library must import. When loading a DLL in the cur- rent directory, Windows will ignore ``./'' as a path specifier and use a search heuristic to find the DLL instead. To avoid this, load the DLL with load [file join [pwd] mylib.DLL] BUGS
If the same file is loaded by different fileNames, it will be loaded into the process's address space multiple times. The behavior of this varies from system to system (some systems may detect the redundant loads, others may not). SEE ALSO
info sharedlibextension, Tcl_StaticPackage(3), safe(n) KEYWORDS
binary code, loading, safe interpreter, shared library Tcl 7.5 load(n)

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