configure.in

AC_INIT(R/svg.R)

AC_ARG_WITH(cairo-package, [--with-cairo-package    use the Cairo package rather than the svg() function in grDevices, regardless of whether svg() is available],[ FORCE_CAIRO_PKG=true; echo "Forcing the use of the Cairo package"])

AC_ARG_WITH(libcairo, [--with-libcairo    force the use of the libcairo device and not the Cairo package],[ FORCE_CAIRO_PKG=true; echo "Forcing the use of the Cairo package"])

if ! test "${FORCE_CAIRO_PKG}" = "true" ; then
 echo 'q(status = capabilities()[["cairo"]] == FALSE)' | $R_HOME/bin/R --vanilla --no-save --silent
 OK="$?"
else
 OK="1"
fi

if test "$OK" = 0 ; then
   echo "*****   Using R's own built-in svg() function (rather than the Cairo package)."
   SYSTEM="libcairo"
   PKG_DEPS="grDevices, "
   USE_CAIRO_PKG="FALSE"
   SVG_FUNCTION="svg"

   AC_PATH_PROG(PKG_CONFIG, pkg-config)
   AC_PATH_PROG(R_SCRIPT, Rscript, , [$R_HOME:$R_HOME/bin:$PATH])


   if test -z "$PKG_CONFIG" ; then
#     echo "Cannot test the version of libcairo as we cannot find pkg-config."
     if test `uname` = "Darwin" ; then
         CAIRO_VERSION=`$R_SCRIPT -e 'source("cairoVersion.R"); cat(determineCairoVersion(), "\\\\n", sep = "");q(status = 0)'`
         if ! test "$?" = 0 ; then
            CAIRO_VERSION="NA"
         fi
         CAIRO_VERSION_10=NA
     else 
         CAIRO_VERSION="NA"
         CAIRO_VERSION_10="NA"
     fi
   else
     CAIRO_VERSION=`${PKG_CONFIG} --modversion cairo`
     $PKG_CONFIG --atleast-version=1.10.0 cair0
     CAIRO_VERSION_10=$?
   fi

else 
   echo "*****   Using the Cairo package."
   PKG_DEPS="Cairo,"
   SYSTEM=""
   SVG_FUNCTION="CairoSVG"
   USE_CAIRO_PKG="TRUE"
fi

AC_SUBST(SYSTEM)
AC_SUBST(PKG_DEPS)
AC_SUBST(USE_CAIRO_PKG)
AC_SUBST(SVG_FUNCTION)
AC_SUBST(CAIRO_VERSION)
AC_SUBST(CAIRO_VERSION_10)


AC_OUTPUT(DESCRIPTION R/config.R)