Installation Environment Variables
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## Installation Environment Variables

Some environment variables can be set before running ./configure to tune the installation process. This can be used to specify the locations of components which are installed but can't be found by ./configure in "standard" locations. For example, you could pass the location of the DocBook DTD by running ./configure as:

    $  DBK_XML_DTD=/home/flacoste/xml/docbook-xml-4.1.2/docbookx.dtd \
     ./configure

The following list explains the purpose of each variable.

`PATHTOPERL`

  Sets the path to the perl interpreter.

`PATHTOJADE`

  Sets the path to the jade DSSSL interpreter.

`PATHTOPDFJADETEX`

  Sets the path to the pdfjatetex command.

`PATHTOXSLTPROC`

  Sets the path to the xsltproc XSLT processor.

`DBK_XML_DTD`

  Sets the path to the DocBook XML Document Type Declaration. This should point to the XML V4.1.2 DTD.

`DBK_XSL_STYLESHEETS`

  Sets the path to the directory which contains Norman Walsh's XSL stylesheets for DocBook. (This directory should contain subdirectories named `fo`, `html` or `xhtml`.)

`DBK_DSSSL_STYLESHEETS`

  Sets the path to the directory which contains Norman Walsh's DSSSL stylesheets for DocBook. (This directory should contain a subdirectory named `print`.)

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