'''exec-prefix''' is one of the standard variables in [autoconf]-generated (and possibly other?) configure scripts and [makefile]s. It is a ''prefix'' of the directory name into which platform/architecture-dependent portions of the package (e.g. ''exec''utables and dynamic libraries) should be installed. In some cases it defaults to the value set for the '''prefix''' variable, in other cases to a subdirectory of $prefix, cf. [Generating a generic platform name].

As [TEA] uses [autoconf], many Tcl extensions and packages have an '''exec-prefix''' value that was set at the time of build-configuring the package in question. 
''Q: When does this matter at the script level? Is it merely providing defaults for [init.tcl], or are there other issues at hand?''

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