wwwoffle: add explicit --build flag for linux arm build

Signed-off-by: Rui Chen <[email protected]>

Author: chenrui333

Formula/w/wwwoffle.rb

@@ -32,7 +32,11 @@ class Wwwoffle < Formula
   uses_from_macos "zlib"
 
   def install
-    system "./configure", "--prefix=#{prefix}"
+    args = []
+    # Help old config scripts identify arm64 linux
+    args << "--build=aarch64-unknown-linux-gnu" if OS.linux? && Hardware::CPU.arm? && Hardware::CPU.is_64_bit?
+
+    system "./configure", *args, *std_configure_args
     system "make", "install"
   end