backport static c-ares

Closes #94.

Signed-off-by: Jeroen Ooms <jeroen@berkeley.edu>

Formula/c-ares.rb

@@ -0,0 +1,57 @@
+class CAres < Formula
+ desc "Asynchronous DNS library"
+ homepage "https://c-ares.org/"
+ url "https://c-ares.org/download/c-ares-1.23.0.tar.gz"
+ mirror "https://github.com/c-ares/c-ares/releases/download/cares-1_23_0/c-ares-1.23.0.tar.gz"
+ sha256 "cb614ecf78b477d35963ebffcf486fc9d55cc3d3216f00700e71b7d4868f79f5"
+ license "MIT"
+ head "https://github.com/c-ares/c-ares.git", branch: "main"
+
+ livecheck do
+ url :homepage
+ regex(/href=.*?c-ares[._-](\d+(?:\.\d+)+)\.t/i)
+ end
+
+ bottle do
+ rebuild 1
+ sha256 cellar: :any, arm64_sonoma: "a2659a49b749fa30972d68042f23ae8500eb2ef470b39d4d7c1d006b0d631192"
+ sha256 cellar: :any, arm64_ventura: "6afea5fb4e5ff029cc3f68c6523458f7f4d800d1e20e1f7617d776c77c203e22"
+ sha256 cellar: :any, arm64_monterey: "52797daa8054095bf4d4c8d0f3bdce6b41a5ae4d5f6e34ac8c2d09851ca6c187"
+ sha256 cellar: :any, sonoma: "eb6e1e08bc53b05cdbdcb64b6b494646b93cec6650e58182b80a22dfcee72c7d"
+ sha256 cellar: :any, ventura: "7a5d3e35412af7e9f924ae2314579bb47874f5c1183a43cdcd955c92ac3065aa"
+ sha256 cellar: :any, monterey: "5d56fbdc7854b40681bc7d76cbeb463d2d15524b0ea646d4ea169cd27e8a99b0"
+ sha256 cellar: :any_skip_relocation, x86_64_linux: "59015edadad722031a2b46a0791c728b3453015c1c217175cf22c41ea12ddf5c"
+ end
+
+ depends_on "cmake" => :build
+
+ def install
+ args = %W[
+ -DCARES_STATIC=ON
+ -DCARES_SHARED=ON
+ -DCMAKE_INSTALL_RPATH=#{rpath}
+ ]
+
+ system "cmake", "-S", ".", "-B", "build", *args, *std_cmake_args
+ system "cmake", "--build", "build"
+ system "cmake", "--install", "build"
+ end
+
+ test do
+ (testpath/"test.c").write <<~EOS
+ #include <stdio.h>
+ #include <ares.h>
+
+ int main()
+ {
+ ares_library_init(ARES_LIB_INIT_ALL);
+ ares_library_cleanup();
+ return 0;
+ }
+ EOS
+ system ENV.cc, "test.c", "-L#{lib}", "-lcares", "-o", "test"
+ system "./test"
+
+ system "#{bin}/ahost", "127.0.0.1"
+ end
+end