tzdb: 2024b (new formula)

Formula/t/tzdb.rb

@@ -0,0 +1,39 @@
+class Tzdb < Formula
+  desc "Time Zone Database"
+  homepage "https://www.iana.org/time-zones"
+  url "https://data.iana.org/time-zones/releases/tzdb-2024b.tar.lz"
+  sha256 "22674a67786d3ec1b0547305904011cb2b9126166e72abbbea39425de5595233"
+  license all_of: ["BSD-3-Clause", :public_domain]
+
+  on_macos do
+    depends_on "gettext"
+  end
+
+  def localtime
+    etc/"localtime"
+  end
+
+  def install
+    make_args = %W[
+      CFLAGS=#{ENV.cflags}
+      USRDIR=#{prefix}
+      TZDEFAULT=#{localtime}
+    ]
+    if OS.mac?
+      gettext = Formula["gettext"]
+      make_args[0] += " -DHAVE_GETTEXT -I#{gettext.include} -L#{gettext.lib}"
+      make_args << "LDLIBS=-lintl"
+    end
+
+    system "make", *make_args, "install"
+  end
+
+  def post_install
+    # Generate default localtime, from Makefile.
+    system sbin/"zic", "-l", "Factory", "-p", "-", "-t", localtime
+  end
+
+  test do
+    assert_match "UTC", shell_output("#{bin}/zdump UTC")
+  end
+end