links: add optional X11 support

Closes #18022.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

1 files changed, 12 insertions, 3 deletions

diff --git a/Library/Formula/links.rb b/Library/Formula/links.rb
index def6ad001..8ac7667c4 100644
--- a/Library/Formula/links.rb
+++ b/Library/Formula/links.rb
@@ -5,10 +5,19 @@ class Links < Formula
   url 'http://links.twibright.com/download/links-2.7.tar.gz'
   sha1 'e0773f2b23397bcbd08d5a3145d94e446dfb4969'
 
+  depends_on :x11 => :optional
+
   def install
-    system "./configure", "--disable-debug", "--disable-dependency-tracking",
-                          "--prefix=#{prefix}",
-                          "--mandir=#{man}"
+    args = %W[
+      --disable-debug
+      --disable-dependency-tracking
+      --prefix=#{prefix}
+      --mandir=#{man}
+    ]
+
+    args << "--enable-graphics" if build.with? 'x11'
+
+    system "./configure", *args
     system "make install"
   end
 end