Merge pull request #215721 from Homebrew/t1lib-linux-arm

t1lib: add explicit `--build` flag for linux arm build

Author: BrewTestBot

Formula/t/t1lib.rb

@@ -34,7 +34,11 @@ def install
     # Workaround for newer Clang
     ENV.append_to_cflags "-Wno-implicit-int" if DevelopmentTools.clang_build_version >= 1403
 
-    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", "without_doc"
     system "make", "install"
     share.install "Fonts" => "fonts"