x86_64-elf-gdb: declare indirect deps with linkage

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

Formula/x/x86_64-elf-gdb.rb

@@ -22,11 +22,14 @@ class X8664ElfGdb < Formula
   end
 
   depends_on "x86_64-elf-gcc" => :test
+
   depends_on "gmp"
   depends_on "mpfr"
   depends_on "[email protected]"
   depends_on "xz" # required for lzma support
 
+  uses_from_macos "expat"
+  uses_from_macos "ncurses"
   uses_from_macos "zlib"
 
   on_system :linux, macos: :ventura_or_newer do
@@ -60,7 +63,8 @@ def install
   test do
     (testpath/"test.c").write "void _start(void) {}"
     system "#{Formula["x86_64-elf-gcc"].bin}/x86_64-elf-gcc", "-g", "-nostdlib", "test.c"
-    assert_match "Symbol \"_start\" is a function at address 0x",
-          shell_output("#{bin}/x86_64-elf-gdb -batch -ex 'info address _start' a.out")
+
+    output = shell_output("#{bin}/x86_64-elf-gdb -batch -ex 'info address _start' a.out")
+    assert_match "Symbol \"_start\" is a function at address 0x", output
   end
 end