Index: gnuplot-6.0.2/docs/Makefile.am
===================================================================
--- gnuplot-6.0.2.orig/docs/Makefile.am
+++ gnuplot-6.0.2/docs/Makefile.am
@@ -110,7 +110,7 @@ gnuplot-ja.log gnuplot-ja.idx gnuplot-ja
 wxhelp_figures wxhelp/*.html wxhelp/wgnuplot.hhc wxhelp/wgnuplot.hhk	\
 wxhelp/wgnuplot.htc wxhelp/doc2html$(EXEEXT) windows/wgnuplot.htk	\
 svg_figures html/*.html html/*.svg html/*.hhc html/*.hhk                \
-webp_figures html/*.webp html/figure_mask.png                           \
+html/*.webp html/figure_mask.png                           \
 psdoc/*.aux psdoc/*.dvi psdoc/*.log                                     \
 psdoc/ps_fontfile_doc.pdf psdoc/ps_fontfile_doc.ps psdoc/ps_symbols.ps  \
 windows/*.png gnuplot.htb gnuplot.texi gnuplot-eldoc.el $(ELCS)
@@ -313,7 +313,7 @@ wxhelp_figures: $(GNUPLOT_EXE) $(srcdir)
 doc2web_SOURCES = doc2web.c termdoc.c xref.c allterm.h
 doc2web_CPPFLAGS = -DALL_TERM_DOC -I../src $(AM_CPPFLAGS)
 
-html: allterm.h doc2web$(EXEEXT) $(srcdir)/gnuplot.doc svg_figures webp_figures
+html: allterm.h doc2web$(EXEEXT) $(srcdir)/gnuplot.doc svg_figures
 	$(AM_V_at) [ -d html ] || mkdir -p html
 	$(AM_V_at) rm -f html/Overview.html html/Plotting_Styles.html html/Commands.html html/Terminals.html
 	$(AM_V_at) rm -f html/NewFeatures.html
@@ -325,12 +325,6 @@ svg_figures: $(GNUPLOT_EXE) $(srcdir)/pl
 	$(AM_V_at) GNUPLOT_LIB=$(top_srcdir)/demo GNUTERM=svg $(GNUPLOT_EXE) $(srcdir)/plotstyles.gnu
 	$(AM_V_GEN)touch $@
 
-webp_figures: $(GNUPLOT_EXE) $(srcdir)/webp_figures.gnu
-	$(AM_V_at) [ -d html ] || mkdir -p html
-	$(AM_V_at) GNUPLOT_LIB=$(top_srcdir)/demo $(GNUPLOT_EXE) $(srcdir)/webp_figures.gnu
-	$(AM_V_GEN)touch $@
-
-
 ### GNU info format
 info: gnuplot.info