media-gfx/openscad: Fix build with boost-1.73.0

Thanks to William T Wilson for reporting and providing patch.

Additionally OpenSCAD has an optional, but automagic dependency on
media-libs/lib3mf.

Add ccache USE flag, as it's automagically enabled whenever the ccache
binary is found in PATH.

Reported-by: William T Wilson <fluffysheap@gmail.com>
Closes: https://bugs.gentoo.org/722302
Package-Manager: Portage-2.3.99-r2, Repoman-2.3.22
Signed-off-by: Bernd Waibel <waebbl@gmail.com>
Signed-off-by: Joonas Niilola <juippis@gentoo.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/media-gfx/openscad/files/openscad-2019.05-0002-Gentoo-specific-Disable-ccache-building.patch b/media-gfx/openscad/files/openscad-2019.05-0002-Gentoo-specific-Disable-ccache-building.patch
new file mode 100644
index 000000000000..1a4903828e80
--- /dev/null
+++ b/media-gfx/openscad/files/openscad-2019.05-0002-Gentoo-specific-Disable-ccache-building.patch
@@ -0,0 +1,35 @@
+From 2940d8e5c74faa5dcd5279c8166064ade3da5695 Mon Sep 17 00:00:00 2001
+From: Bernd Waibel <waebbl@gmail.com>
+Date: Sun, 17 May 2020 21:13:44 +0200
+Subject: [PATCH] [Gentoo-specific] Disable ccache building
+
+On Gentoo we use a USE flag to determine whether to use
+ccache for building or not.
+
+Signed-off-by: Bernd Waibel <waebbl@gmail.com>
+---
+ openscad.pro | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/openscad.pro b/openscad.pro
+index 2d190dd..9c4e67b 100755
+--- a/openscad.pro
++++ b/openscad.pro
+@@ -214,10 +214,10 @@ mdi {
+   DEFINES += ENABLE_MDI
+ }
+ 
+-system("ccache -V >/dev/null 2>/dev/null") {
+-  CONFIG += ccache
+-  message("Using ccache")
+-}
++#system("ccache -V >/dev/null 2>/dev/null") {
++#  CONFIG += ccache
++#  message("Using ccache")
++#}
+ 
+ include(common.pri)
+ 
+-- 
+2.26.2
+