The --with configure option is used to enable extensions that
require external libraries. --with takes the installation prefix
for that library as an optional argument.
The <with> tag takes three attributes:
- • name= for the actual name of the "with" option
- • testfile for the relative path of a file to check for while running the configure script
- • a list of default paths to check
name and defaults are set to the extension base name and
"/usr:/usr/local" if no values are given. The testfile attribute is
mandatory.
Textual data enclosed by the <with> is used to describe the "with"
option in the output of configure --help calls.
<with defaults='/usr:/usr/local' testfile='include/sample.h'>sample install</with>
