Add support for libinotify

Formula/libinotify-kqueue.rb

@@ -0,0 +1,43 @@
+class LibinotifyKqueue < Formula
+  desc "BSD port of Linux's inotify"
+  homepage "https://github.com/libinotify-kqueue/libinotify-kqueue"
+  url "https://github.com/libinotify-kqueue/libinotify-kqueue.git",
+    tag:      "20211018",
+    revision: "ea7835fcafc3cee2a0d6c0e3c8034962c48f6afe"
+  license "MIT"
+  head "https://github.com/libinotify-kqueue/libinotify-kqueue.git",
+    branch: "master"
+
+  depends_on "autoconf" => :build
+  depends_on "automake" => :build
+  depends_on "gcc" => :build
+  depends_on "libtool" => :build
+
+  def install
+    # Autoconf
+    system "autoreconf", "-fiv"
+    # Configure
+    system "./configure"
+    # Build
+    system "make"
+    # Copy
+    system "make", "install", "DESTDIR=#{buildpath}"
+    # Move
+    lib.install Dir["#{buildpath}/usr/local/lib/*"]
+    include.install Dir["#{buildpath}/usr/local/include/*"]
+    man.install Dir["#{buildpath}/usr/local/share/man/*"]
+  end
+
+  test do
+    # Check if the library is installed
+    (testpath/"test.cpp").write <<~EOS
+      #include <sys/inotify.h>
+      int main() {
+        inotify_init();
+        return 0;
+      }
+    EOS
+    system ENV.cc, "test.cpp", "-L#{lib}", "-linotify", "-o", "test"
+    system "./test"
+  end
+end