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

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

Author: chenrui333

Formula/g/gaul.rb

@@ -33,10 +33,13 @@ def install
     # Run autoreconf on macOS to rebuild configure script so that it doesn't try
     # to build with a flat namespace.
     system "autoreconf", "--force", "--verbose", "--install" if OS.mac?
-    system "./configure", "--disable-dependency-tracking",
-                          "--disable-debug",
-                          "--disable-g",
-                          "--prefix=#{prefix}"
+
+    args = ["--disable-g"]
+
+    # 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
 end