add protobuf-c package

extra/protobuf-c/APKBUILD

@@ -0,0 +1,53 @@
+# Alpine-Contributor: TBK <[email protected]>
+# Alpine-Maintainer: Leonardo Arena <[email protected]>
+# Maintainer: jscaffidi <[email protected]>
+pkgname=protobuf-c
+pkgver=1.5.2
+pkgrel=0
+pkgdesc="Protocol Buffers implementation in C"
+url="https://github.com/protobuf-c/protobuf-c"
+arch="all"
+license="BSD-2-Clause"
+depends_dev="$pkgname-compiler=$pkgver-r$pkgrel"
+makedepends="autoconf automake libtool abseil-cpp-dev protobuf-dev"
+subpackages="$pkgname-compiler $pkgname-dev"
+source="https://github.com/protobuf-c/protobuf-c/releases/download/v$pkgver/protobuf-c-$pkgver.tar.gz"
+
+# secfixes:
+#   1.4.1-r0:
+#     - CVE-2022-33070
+#   1.3.2-r0:
+#     - CVE-2021-3121
+
+build() {
+	CFLAGS="$CFLAGS -fPIC" \
+	CXXFLAGS="$CXXFLAGS -std=c++17 -fPIC" \
+	./configure \
+		--prefix=/usr \
+		--sysconfdir=/etc \
+		--mandir=/usr/share/man \
+		--infodir=/usr/share/info
+
+	make
+}
+
+check() {
+	make check
+}
+
+package() {
+	make DESTDIR="$pkgdir" install
+}
+
+compiler() {
+	pkgdesc="Protocol Buffers C compiler"
+
+	amove usr/bin/protoc-c
+	amove usr/bin/protoc-gen-c
+}
+
+sha512sums="
+78dc72988d7e8232c1b967849aa00939bc05ab7d39b86a8e2af005e38aa4ef4c9b03920d51fb5337399d980e65f35d11bd4742bea745a893ecc909f56a51c9ac  protobuf-c-1.5.2.tar.gz
+"
+
+