added extra/libb2

extra/libb2/PKGBUILD

@@ -0,0 +1,38 @@
+# Maintainer: Antonio Rojas <arojas@archlinux.org>
+# Contributor: Lex Black <autumn-wind@web.de>
+# Contributor: Jesin <Jesin00@gmail.com>
+
+# ALARM: Kevin Mihelich <kevin@archlinuxarm.org>
+#  - configure with --disable-fat (SSE)
+
+pkgname=libb2
+pkgver=0.98.1
+pkgrel=2
+arch=(x86_64)
+pkgdesc='C library providing BLAKE2b, BLAKE2s, BLAKE2bp, BLAKE2sp hash functions'
+url='https://blake2.net/'
+license=(custom:CC0)
+depends=(gcc-libs)
+source=("https://github.com/BLAKE2/libb2/releases/download/v$pkgver/$pkgname-$pkgver.tar.gz")
+sha256sums=('53626fddce753c454a3fea581cbbc7fe9bbcf0bc70416d48fdbbf5d87ef6c72e')
+
+# libb2's build system discards the $CFLAGS variable.
+# We can get around this by putting those flags in $CC.
+export CC="${CC-cc} $CFLAGS"
+
+build() {
+  cd "$pkgname-$pkgver"
+  ./configure --prefix=/usr --disable-static --enable-shared --disable-native --disable-fat
+  make
+}
+
+check() {
+  cd $pkgname-$pkgver
+  make check
+}
+
+package() {
+  cd $pkgname-$pkgver
+  make DESTDIR="$pkgdir" install
+  install -Dm644 COPYING -t "$pkgdir"/usr/share/licenses/$pkgname
+}