main/libsodium: upgrade to 1.0.18

* https://github.com/jedisct1/libsodium/blob/master/ChangeLog

main/libsodium/APKBUILD

@@ -2,18 +2,16 @@
 # Contributor: Stuart Cardall <developer@it-offshore.co.uk>
 # Maintainer: Stuart Cardall <developer@it-offshore.co.uk>
 pkgname=libsodium
-pkgver=1.0.17
+pkgver=1.0.18
 pkgrel=0
 pkgdesc="P(ortable|ackageable) NaCl-based crypto library"
 url="https://github.com/jedisct1/libsodium"
 arch="all"
 license="ISC"
-subpackages="$pkgname-dev"
+subpackages="$pkgname-static $pkgname-dev"
 source="https://download.libsodium.org/$pkgname/releases/$pkgname-$pkgver.tar.gz"
-builddir="$srcdir/$pkgname-$pkgver"
 
 build() {
-	cd "$builddir"
 	./configure \
 		--build=$CBUILD \
 		--host=$CHOST \
@@ -22,13 +20,18 @@ build() {
 }
 
 check() {
-	cd "$builddir"
 	make check
 }
 
+static() {
+	pkgdesc="libsodium static libraries"
+
+	mkdir -p "$subpkgdir"/usr/lib
+	mv "$pkgdir"/usr/lib/*.a "$subpkgdir"/usr/lib/
+}
+
 package() {
-	cd "$builddir"
 	make DESTDIR="$pkgdir" install
 }
 
-sha512sums="7cc9e4f11e656008ce9dff735acea95acbcb91ae4936de4d26f7798093766a77c373e9bd4a7b45b60ef8a11de6c55bc8dcac13bebf8c23c671d0536430501da1  libsodium-1.0.17.tar.gz"
+sha512sums="17e8638e46d8f6f7d024fe5559eccf2b8baf23e143fadd472a7d29d228b186d86686a5e6920385fe2020729119a5f12f989c3a782afbd05a8db4819bb18666ef  libsodium-1.0.18.tar.gz"