sci-visualization/gnuplot: Fix build with USE=libcaca.

Compilation failed with USE="libcaca -ggi -wxwidgets -X".
Fixed in 5.4.0-r2 and patch backported to 5.2.8.

Closes: https://bugs.gentoo.org/690014
Package-Manager: Portage-3.0.9, Repoman-3.0.2
Signed-off-by: Ulrich Müller <ulm@gentoo.org>

sci-visualization/gnuplot/files/gnuplot-5.2.6-caca.patch

@@ -1,13 +0,0 @@
-https://bugs.gentoo.org/690014
-https://sourceforge.net/p/gnuplot/mailman/message/34342174/
-
---- gnuplot-5.2.6-orig/configure.ac
-+++ gnuplot-5.2.6/configure.ac
-@@ -1224,6 +1224,7 @@
- if test "${enable_qt_ok}" = yes \
-   || test "${enable_wxwidgets_ok}" = yes \
-   || test "$GGI_SUPPORT" = yes \
-+  || test "$with_caca" = yes \
-   || test "$no_x" != yes; then
-     enable_mouse=yes;
- fi

sci-visualization/gnuplot/files/gnuplot-5.2.8-caca.patch

@@ -0,0 +1,33 @@
+Patch backported from branch-5-4-stable.
+https://bugs.gentoo.org/690014
+
+--- gnuplot-5.2.8-orig/term/caca.trm
++++ gnuplot-5.2.8/term/caca.trm
+@@ -1909,8 +1909,11 @@
+ 	CACA_result loop = CACA_loop;
+ 	caca_event_t ev;
+ 	const int event_mask =
+-		CACA_EVENT_KEY_PRESS | CACA_EVENT_RESIZE |  CACA_EVENT_QUIT |
+-		CACA_EVENT_MOUSE_MOTION | CACA_EVENT_MOUSE_PRESS | CACA_EVENT_MOUSE_RELEASE;
++		CACA_EVENT_KEY_PRESS | CACA_EVENT_RESIZE |  CACA_EVENT_QUIT
++#ifdef USE_MOUSE
++		| CACA_EVENT_MOUSE_MOTION | CACA_EVENT_MOUSE_PRESS | CACA_EVENT_MOUSE_RELEASE
++#endif
++		;
+ 	static int mx = 0, my = 0; /* current mouse position */
+ 	static unsigned long last_event_time = 0;
+ 
+@@ -2577,11 +2580,13 @@
+ 		}
+ 	}
+ 
++#ifdef USE_MOUSE
+ 	if (changed) {
+ 		/* Replot only if something changed. */
+ 		CACA_zoom_or_replot = TRUE;
+ 		process_event(GE_replot, 0, 0, 0, 0, 0);
+ 	}
++#endif
+ }
+ 
+ 

sci-visualization/gnuplot/files/gnuplot-5.4.0-caca.patch

@@ -0,0 +1,46 @@
+From f76d96206a7251d62dbbd3879bf0ad6dfe1ec486 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Ulrich=20M=C3=BCller?= <ulm@gentoo.org>
+Date: Sat, 7 Nov 2020 11:25:07 -0800
+Subject: [PATCH] Allow to build --with-caca but without mouse support
+
+EAM: slightly modified fix
+Bug #2351
+---
+ term/caca.trm | 9 +++++++--
+ 1 file changed, 7 insertions(+), 2 deletions(-)
+
+diff --git a/term/caca.trm b/term/caca.trm
+index cf7c0d7c6..58606e2d8 100644
+--- a/term/caca.trm
++++ b/term/caca.trm
+@@ -1913,8 +1913,11 @@ CACA_process_events(void)
+ 	CACA_result loop = CACA_loop;
+ 	caca_event_t ev;
+ 	const int event_mask =
+-		CACA_EVENT_KEY_PRESS | CACA_EVENT_RESIZE |  CACA_EVENT_QUIT |
+-		CACA_EVENT_MOUSE_MOTION | CACA_EVENT_MOUSE_PRESS | CACA_EVENT_MOUSE_RELEASE;
++		CACA_EVENT_KEY_PRESS | CACA_EVENT_RESIZE |  CACA_EVENT_QUIT
++#ifdef USE_MOUSE
++		| CACA_EVENT_MOUSE_MOTION | CACA_EVENT_MOUSE_PRESS | CACA_EVENT_MOUSE_RELEASE
++#endif
++		;
+ 	static int mx = 0, my = 0; /* current mouse position */
+ 	static unsigned long last_event_time = 0;
+ 
+@@ -2579,11 +2582,13 @@ CACA_modify_plots(unsigned int operations, int plotno)
+ 		}
+ 	}
+ 
++#ifdef USE_MOUSE
+ 	if (changed) {
+ 		/* Replot only if something changed. */
+ 		CACA_zoom_or_replot = TRUE;
+ 		exec_event(GE_replot, 0, 0, 0, 0, 0);
+ 	}
++#endif
+ }
+ 
+ 
+-- 
+2.29.2
+

sci-visualization/gnuplot/gnuplot-5.2.8.ebuild

@@ -74,7 +74,7 @@ src_prepare() {
 	eapply "${FILESDIR}"/${PN}-5.0.1-fix-underlinking.patch
 	eapply "${FILESDIR}"/${PN}-5.0.6-no-picins.patch
 	eapply "${FILESDIR}"/${PN}-5.2.2-regis.patch
-	eapply "${FILESDIR}"/${PN}-5.2.6-caca.patch
+	eapply "${FILESDIR}"/${PN}-5.2.8-caca.patch
 	eapply_user
 
 	if [[ -z ${PV%%*9999} ]]; then

sci-visualization/gnuplot/gnuplot-5.4.0-r100.ebuild

@@ -78,6 +78,7 @@ PATCHES=(
 	"${FILESDIR}"/${PN}-5.0.6-no-picins.patch
 	"${FILESDIR}"/${P}-pkg-config.patch
 	"${FILESDIR}"/${P}-no-mouse.patch
+	"${FILESDIR}"/${P}-caca.patch
 )
 
 pkg_setup() {

sci-visualization/gnuplot/gnuplot-5.4.0-r2.ebuild

@@ -75,6 +75,7 @@ PATCHES=(
 	"${FILESDIR}"/${PN}-5.0.6-no-picins.patch
 	"${FILESDIR}"/${P}-pkg-config.patch
 	"${FILESDIR}"/${P}-no-mouse.patch
+	"${FILESDIR}"/${P}-caca.patch
 )
 
 src_prepare() {