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% File src/library/grDevices/man/grSoftVersion.Rd
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% File src/library/grDevices/man/grSoftVersion.Rd
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% Part of the R package, https://www.R-project.org
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% Part of the R package, https://www.R-project.org
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% Copyright 2014-2017 R Core Team
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% Copyright 2014-2018 R Core Team
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% Distributed under GPL 2 or later
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% Distributed under GPL 2 or later
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\name{grSoftVersion}
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\name{grSoftVersion}
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\alias{grSoftVersion}
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\alias{grSoftVersion}
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\title{Report Versions of Graphics Software}
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\title{Report Versions of Graphics Software}
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\description{
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\description{
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  Report versions of third-party graphics software.
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  Report versions of third-party graphics software available on the
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  current platform for \R's graphics.
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}
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}
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\usage{
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\usage{
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grSoftVersion()
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grSoftVersion()
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}
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}
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\value{
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\value{
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  A named character vector containing at least the elements
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  A named character vector containing at least the elements
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  \item{cairo}{the version of cairographics in use, or \code{""} if
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  \item{cairo}{the version of cairographics in use, or \code{""} if
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    cairographics is not available.}
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    cairographics is not available.}
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  It may also contain the versions of third-party software used by the
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  It may also contain the versions of third-party software used by the
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#ifdef windows
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  standard
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#endif
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#ifdef unix
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  X11-based
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  standard (on Windows), or X11-based (on Unix-alikes)
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#endif
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  bitmap devices:
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  bitmap devices:
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  \item{libpng}{the version of \code{libpng} in use, or \code{""} if
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  \item{libpng}{the version of \code{libpng} in use, or \code{""} if
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    not available.}
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    not available.}
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  \item{jpeg}{the version of the JPEG headers used for compilation,
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  \item{jpeg}{the version of the JPEG headers used for compilation,
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    or \code{""} if JPEG support was not compiled in.}
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    or \code{""} if JPEG support was not compiled in.}
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    not available.}
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    not available.}
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  It is conceivable but unlikely that the cairo-based bitmap devices
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  It is conceivable but unlikely that the cairo-based bitmap devices
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  will use different versions linked \emph{via} cairographics,
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  will use different versions linked \emph{via} cairographics,
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  especially \code{png(type = "cairo-png")}.
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  especially \code{png(type = "cairo-png")}.
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#ifdef unix
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  If available on macOS, the Quartz-based devices will use the system
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  On macOS, if available, the Quartz-based devices will use the system
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  versions of these libraries rather than those reported here.
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  versions of these libraries rather than those reported here.
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#endif
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  Unless otherwise stated the reported version is that of the (possibly
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  Unless otherwise stated the reported version is that of the (possibly
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  dynamically-linked) library in use at runtime.
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  dynamically-linked) library in use at runtime.
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  Note that \code{libjpeg-turbo} as used on some Linux distributions
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  Note that \code{libjpeg-turbo} as used on some Linux distributions