AC_ARG_WITH(libplot, [ --without-libplot don't compile in support of charts (using libplot)])
if test x"$with_libplot" != x"no" ; then
- AC_CHECK_LIB(plot, pl_newpl_r,,
- [PSPP_REQUIRED_PREREQ([libplot (or use --without-libplot)])])
+ # Check whether we can link against libplot without any extra libraries.
+ AC_CHECK_LIB(plot, pl_newpl_r, [LIBPLOT_LIBS="-lplot"])
+
+ # Check whether we can link against libplot if we also link X.
+ if test x"$LIBPLOT_LIBS" = x""; then
+ AC_PATH_XTRA
+ extra_libs="-lXaw -lXmu -lXt $X_PRE_LIBS -lXext -lX11 $X_EXTRA_LIBS -lm"
+ AC_CHECK_LIB(plot, pl_newpl_r,
+ [LIBPLOT_LIBS="-lplot $extra_libs"
+ LDFLAGS="$LDFLAGS $X_LIBS"],,
+ [$extra_libs])
+ fi
+
+ # Still can't link?
+ if test x"$LIBPLOT_LIBS" = x""; then
+ PSPP_REQUIRED_PREREQ([libplot (or use --without-libplot)])
+ fi
+
+ # Set up to make everything work.
+ LIBS="$LIBPLOT_LIBS $LIBS"
+ AC_DEFINE(HAVE_LIBPLOT, 1,
+ [Define to 1 if you have the `libplot' library (-lplot).])
fi
])