agg: fix build w/ gcc-8.2.0

Signed-off-by: Jürgen Buchmüller <pullmoll@t-online.de>

srcpkgs/agg/patches/gcc82.patch

@@ -0,0 +1,11 @@
+--- include/agg_renderer_outline_aa.h	2006-10-09 06:07:08.000000000 +0200
++++ include/agg_renderer_outline_aa.h	2018-08-22 11:06:28.038930861 +0200
+@@ -1375,7 +1375,7 @@
+         //---------------------------------------------------------------------
+         void profile(const line_profile_aa& prof) { m_profile = &prof; }
+         const line_profile_aa& profile() const { return *m_profile; }
+-        line_profile_aa& profile() { return *m_profile; }
++        line_profile_aa& profile() { return const_cast<line_profile_aa &>(*m_profile); }
+ 
+         //---------------------------------------------------------------------
+         int subpixel_width() const { return m_profile->subpixel_width(); }

srcpkgs/agg/template

@@ -1,15 +1,16 @@
 # Template file for 'agg'
 pkgname=agg
 version=2.5
-revision=4
+revision=5
 build_style=gnu-configure
+configure_args="--disable-examples"
 disable_parallel_build=1
-hostmakedepends="pkg-config automake libtool gettext-devel SDL-devel"
+hostmakedepends="SDL-devel automake gettext-devel libtool pkg-config"
-makedepends="freetype-devel SDL-devel"
+makedepends="SDL-devel freetype-devel"
 short_desc="A High Quality Rendering Engine for C++"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
 homepage="http://www.antigrain.com/"
-license="GPL-2"
+license="GPL-2.0-or-later"
 distfiles="http://www.antigrain.com/agg-${version}.tar.gz"
 checksum=ab1edc54cc32ba51a62ff120d501eecd55fceeedf869b9354e7e13812289911f