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# GNUInstallDirs

Define GNU standard installation directories

Provides install directory variables as defined for GNU software:

> http://www.gnu.org/prep/standards/html_node/Directory-Variables.html

Inclusion of this module defines the following variables:

`CMAKE_INSTALL_<dir>`
  destination for files of a given type
`CMAKE_INSTALL_FULL_<dir>`
  corresponding absolute path

where <dir> is one of:

`BINDIR`
  user executables (bin)
`SBINDIR`
  system admin executables (sbin)
`LIBEXECDIR`
  program executables (libexec)
`SYSCONFDIR`
  read-only single-machine data (etc)
`SHAREDSTATEDIR`
  modifiable architecture-independent data (com)
`LOCALSTATEDIR`
  modifiable single-machine data (var)
`LIBDIR`
  object code libraries (lib or lib64 or lib/<multiarch-tuple> on Debian)
`INCLUDEDIR`
  C header files (include)
`OLDINCLUDEDIR`
  C header files for non-gcc (/usr/include)
`DATAROOTDIR`
  read-only architecture-independent data root (share)
`DATADIR`
  read-only architecture-independent data (DATAROOTDIR)
`INFODIR`
  info documentation (DATAROOTDIR/info)
`LOCALEDIR`
  locale-dependent data (DATAROOTDIR/locale)
`MANDIR`
  man documentation (DATAROOTDIR/man)
`DOCDIR`
  documentation root (DATAROOTDIR/doc/PROJECT_NAME)

Each CMAKE_INSTALL_<dir> value may be passed to the DESTINATION options of install() commands for the corresponding file type. If the includer does not define a value the above-shown default will be used and the value will appear in the cache for editing by the user. Each CMAKE_INSTALL_FULL_<dir> value contains an absolute path constructed from the corresponding destination by prepending (if necessary) the value of CMAKE_INSTALL_PREFIX.

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