pam-u2f 1.0.4 (new formula)

Closes Homebrew/homebrew#43676.

Signed-off-by: Dominyk Tiller <dominyktiller@gmail.com>

Formula/pam-u2f.rb

@@ -0,0 +1,40 @@
+class PamU2f < Formula
+  desc "Provides an easy way to use U2F-compliant authenticators with PAM"
+  homepage "https://developers.yubico.com/pam-u2f/"
+  url "https://developers.yubico.com/pam-u2f/Releases/pam_u2f-1.0.4.tar.gz"
+  sha256 "71542e4568e6d2acaa50810a93c67297ba402f960da1ebb621413bd31f0732a1"
+
+  head "https://github.com/Yubico/pam-u2f.git"
+
+  depends_on "libu2f-host"
+  depends_on "libu2f-server"
+
+  depends_on "pkg-config" => :build
+  depends_on "libtool" => :build
+  depends_on "autoconf" => :build
+  depends_on "automake" => :build
+  depends_on "asciidoc" => :build
+
+  def install
+    system "autoreconf", "--install"
+
+    ENV["A2X"] = "#{Formula["asciidoc"].opt_bin}/a2x --no-xmllint"
+    args = ["--prefix=#{prefix}", "--with-pam-dir=#{lib}/pam"]
+    system "./configure", *args
+    system "make", "install"
+  end
+
+  def caveats; <<-EOS.undent
+    To use a U2F key for PAM authentication, specify the full path to the
+    module (#{lib}pam/pam_u2f.so) in a PAM
+    configuration. You can find all PAM configurations in /etc/pam.d.
+
+    For further installation instructions, please visit
+    https://developers.yubico.com/pam-u2f/#installation.
+    EOS
+  end
+
+  test do
+    system "#{bin}/pamu2fcfg", "--version"
+  end
+end