class Isl < Formula
  desc "Integer Set Library for the polyhedral model"
  homepage "http://isl.gforge.inria.fr"
  # Note: Always use tarball instead of git tag for stable version.
  #
  # Currently isl detects its version using source code directory name
  # and update isl_version() function accordingly.  All other names will
  # result in isl_version() function returning "UNKNOWN" and hence break
  # package detection.
  url "http://isl.gforge.inria.fr/isl-0.18.tar.xz"
  mirror "https://mirrors.ocf.berkeley.edu/debian/pool/main/i/isl/isl_0.18.orig.tar.xz"
  sha256 "0f35051cc030b87c673ac1f187de40e386a1482a0cfdf2c552dd6031b307ddc4"

  bottle do
    cellar :any
    sha256 "1430a6e91faca8d8a07dc16cb078ab80707f134f4a3f94853bf007c79d9cd68f" => :high_sierra
    sha256 "1c2765a5766f8bc022dc49d77d7d32a9c3e92e82452bc63ab534f3c1f18a913c" => :sierra
    sha256 "00c61068ede0e555b9d41126cfe773f93a1b5f3b4843bc34f001987f940d7796" => :el_capitan
    sha256 "3f5c77443c140d387297d23056e86e07a9bb3a34328d42edcff7aef47410c1f0" => :yosemite
  end

  head do
    url "http://repo.or.cz/r/isl.git"

    depends_on "autoconf" => :build
    depends_on "automake" => :build
    depends_on "libtool" => :build
  end

  depends_on "gmp"

  def install
    system "./autogen.sh" if build.head?
    system "./configure", "--disable-dependency-tracking",
                          "--disable-silent-rules",
                          "--prefix=#{prefix}",
                          "--with-gmp=system",
                          "--with-gmp-prefix=#{Formula["gmp"].opt_prefix}"
    system "make", "check"
    system "make", "install"
    (share/"gdb/auto-load").install Dir["#{lib}/*-gdb.py"]
  end

  test do
    (testpath/"test.c").write <<~EOS
      #include <isl/ctx.h>

      int main()
      {
        isl_ctx* ctx = isl_ctx_alloc();
        isl_ctx_free(ctx);
        return 0;
      }
    EOS
    system ENV.cc, "test.c", "-L#{lib}", "-lisl", "-o", "test"
    system "./test"
  end
end