sci-visualization/gnuplot: Fix building with USE="doc".

- Do not require picins.sty.
- Build documentation without figures if cairo is disabled.

Closes: https://bugs.gentoo.org/577828
Package-Manager: Portage-2.3.14, Repoman-2.3.6

3 files changed, 49 insertions, 8 deletions

diff --git a/sci-visualization/gnuplot/files/gnuplot-5.0.6-no-picins.patch b/sci-visualization/gnuplot/files/gnuplot-5.0.6-no-picins.patch
new file mode 100644
index 000000000000..87408aebd447
--- /dev/null
+++ b/sci-visualization/gnuplot/files/gnuplot-5.0.6-no-picins.patch
@@ -0,0 +1,27 @@
+Do not require picins.sty.
+https://bugs.gentoo.org/577828#c4
+
+--- gnuplot-5.0.6-orig/docs/Makefile.am
++++ gnuplot-5.0.6/docs/Makefile.am
+@@ -189,7 +189,6 @@
+ 	  touch figures.idx ; \
+ 	  rm -f pdffigures.tex ; \
+ 	  ( echo "\usepackage{graphicx}" > pdffigures.tex ; \
+-	    echo "\usepackage{picins}" >> pdffigures.tex ; \
+ 	  ) ; \
+ 	  TEXINPUTS=.:$(srcdir):$(top_srcdir):${TEXINPUTS}: $(PDFLATEX) $< ; \
+ 	  TEXINPUTS=.:$(srcdir):$(top_srcdir):${TEXINPUTS}: $(PDFLATEX) $< ; \
+--- gnuplot-5.0.6-orig/docs/doc2tex.c
++++ gnuplot-5.0.6/docs/doc2tex.c
+@@ -170,9 +170,9 @@
+     case 'F':			/* embedded figure */
+ 	    if (figures) {
+ 		line[strlen(line)-1]=NUL;
+-		(void) fputs("\\parpic[r][rt]{\\includegraphics[width=3in,keepaspectratio]{",b);
++		(void) fputs("\\begin{figure}[htb]\n\\centering\\includegraphics[width=3in,keepaspectratio]{",b);
+ 		fputs(line+1, b);
+-		(void) fputs("}}\n",b);
++		(void) fputs("}\n\\end{figure}\n",b);
+ 	    }
+ 	    break;
+ 
diff --git a/sci-visualization/gnuplot/gnuplot-5.0.6.ebuild b/sci-visualization/gnuplot/gnuplot-5.0.6.ebuild
index cac060cf8d00..2a7de7b82e76 100644
--- a/sci-visualization/gnuplot/gnuplot-5.0.6.ebuild
+++ b/sci-visualization/gnuplot/gnuplot-5.0.6.ebuild
@@ -66,10 +66,10 @@ GP_VERSION="${PV%.*}"
 E_SITEFILE="lisp/50${PN}-gentoo.el"
 TEXMF="${EPREFIX}/usr/share/texmf-site"
 
-PATCHES=( "${FILESDIR}"/${PN}-5.0.1-fix-underlinking.patch )
-
 src_prepare() {
-	default
+	eapply "${FILESDIR}"/${PN}-5.0.1-fix-underlinking.patch
+	eapply "${FILESDIR}"/${PN}-5.0.6-no-picins.patch
+	eapply_user
 
 	if [[ -z ${PV%%*9999} ]]; then
 		local dir
@@ -162,7 +162,14 @@ src_compile() {
 	if use doc; then
 		# Avoid sandbox violation in epstopdf/ghostscript
 		addpredict /var/cache/fontconfig
-		emake -C docs gnuplot.pdf
+		if use cairo; then
+			emake -C docs pdf
+		else
+			ewarn "Cannot build figures unless cairo is enabled."
+			ewarn "Building documentation without figures."
+			emake -C docs pdf_nofig
+			mv docs/nofigures.pdf docs/gnuplot.pdf || die
+		fi
 		emake -C tutorial pdf
 	fi
 }
diff --git a/sci-visualization/gnuplot/gnuplot-5.0.9999.ebuild b/sci-visualization/gnuplot/gnuplot-5.0.9999.ebuild
index e06fd330630b..ef281474464e 100644
--- a/sci-visualization/gnuplot/gnuplot-5.0.9999.ebuild
+++ b/sci-visualization/gnuplot/gnuplot-5.0.9999.ebuild
@@ -66,10 +66,10 @@ GP_VERSION="${PV%.*}"
 E_SITEFILE="lisp/50${PN}-gentoo.el"
 TEXMF="${EPREFIX}/usr/share/texmf-site"
 
-PATCHES=( "${FILESDIR}"/${PN}-5.0.1-fix-underlinking.patch )
-
 src_prepare() {
-	default
+	eapply "${FILESDIR}"/${PN}-5.0.1-fix-underlinking.patch
+	eapply "${FILESDIR}"/${PN}-5.0.6-no-picins.patch
+	eapply_user
 
 	if [[ -z ${PV%%*9999} ]]; then
 		local dir
@@ -162,7 +162,14 @@ src_compile() {
 	if use doc; then
 		# Avoid sandbox violation in epstopdf/ghostscript
 		addpredict /var/cache/fontconfig
-		emake -C docs gnuplot.pdf
+		if use cairo; then
+			emake -C docs pdf
+		else
+			ewarn "Cannot build figures unless cairo is enabled."
+			ewarn "Building documentation without figures."
+			emake -C docs pdf_nofig
+			mv docs/nofigures.pdf docs/gnuplot.pdf || die
+		fi
 		emake -C tutorial pdf
 	fi
 }