json-c: add rdrand build_option, enable threading.

closes #1608

srcpkgs/json-c/template

@@ -1,21 +1,26 @@
-# Template build file for 'json-c'.
+# Template file for 'json-c'
 pkgname=json-c
 version=0.13.1
-revision=1
+revision=2
 build_style=gnu-configure
+configure_args="--enable-threading $(vopt_enable rdrand)"
 hostmakedepends="automake libtool"
 short_desc="A JSON implementation in C"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
 license="MIT"
-homepage="http://oss.metaparadigm.com/$pkgname"
-distfiles="https://s3.amazonaws.com/json-c_releases/releases/$pkgname-$version.tar.gz"
+homepage="https://json-c.github.io/json-c"
+distfiles="https://s3.amazonaws.com/json-c_releases/releases/${pkgname}-${version}.tar.gz"
 checksum=b87e608d4d3f7bfdd36ef78d56d53c74e66ab278d318b71e6002a369d36f4873
 
 CFLAGS="-Wno-error"
 
+build_options="rdrand"
+desc_option_rdrand="Enable RDRAND Hardware RNG Hash Seed generation on x86_x64 platforms"
+
 pre_configure() {
 	autoreconf -fi
 }
+
 post_install() {
 	vlicense COPYING
 }