backporting argon2 to enable new password_hash algo (7.2 only)

Author: Diego Hernandes

scripts/v3.7/php-7.2/argon2/APKBUILD

@@ -0,0 +1,42 @@
+# This package is being back-ported to support PHp 7.2 Argon2 password_hash() algo.
+# Original file: https://github.com/alpinelinux/aports/blob/master/testing/argon2/APKBUILD
+
+# Any license indication here contained takes lesser precedence than the original
+# licenses on the official sources. It's just a backport.
+
+# Contributor: Corey Oliver <coreyjonoliver@gmail.com>
+# Maintainer: Corey Oliver <coreyjonoliver@gmail.com>
+pkgname=argon2
+_pkgname=phc-winner-argon2
+pkgver=20161029
+_soname=0.0.0
+pkgrel=1
+pkgdesc="The password hash Argon2, winner of PHC"
+url="https://github.com/P-H-C/phc-winner-argon2"
+arch="all !armhf"
+license="Apache-2.0 CC0-1.0"
+subpackages="$pkgname-dev libargon2"
+source="$pkgname-$pkgver.tar.gz::https://github.com/P-H-C/$_pkgname/archive/$pkgver.tar.gz"
+builddir="$srcdir/$_pkgname-$pkgver"
+
+build() {
+    cd "$builddir"
+    make && make test
+}
+
+package() {
+    cd "$builddir"
+    make DESTDIR="$pkgdir" install || return 1
+
+    # A version number is not appended to the shared library file by default, so we do it ourselves
+    mv "$pkgdir"/usr/lib/libargon2.so "$pkgdir"/usr/lib/libargon2.so.$_soname || return 1
+    ln -s libargon2.so.$_soname "$pkgdir"/usr/lib/libargon2.so || return 1
+	ln -s libargon2.so.$_soname "$pkgdir"/usr/lib/libargon2.so.${_soname%%.*} || return 1
+}
+
+libargon2() {
+    pkgdesc="The password hash Argon2 library, winner of PHC"
+    mkdir -p "$subpkgdir"/usr
+    mv "$pkgdir"/usr/lib "$subpkgdir"/usr
+}
+sha512sums="e1f947a97e8b5f292dd32a6f1ea0ef3f2e411629218653821886ec4e1d5f8289d5b8f4b8bf0a37e69c344a83b975c695947d6b49fd2001a0e4273bebd4792892  argon2-20161029.tar.gz"