minimal-bootstrap: trim binutils-static output

Drop unused installed libraries and headers, avoid building unused gprof/libctf components, and replace duplicate target-prefixed tools with symlinks while keeping the conventional paths available.

Size impact against upstream/staging:

- binutils-static closure: 42.482 MiB -> 21.093 MiB (-21.389 MiB)

Assisted-by: codex with gpt-5.5-high

pkgs/os-specific/linux/minimal-bootstrap/binutils/static.nix

@@ -46,6 +46,8 @@ let
     "--enable-deterministic-archives"
     # depends on bison
     "--disable-gprofng"
+    # unused downstream
+    "--disable-gprof"
 
     # Turn on --enable-new-dtags by default to make the linker set
     # RUNPATH instead of RPATH on binaries.  This is important because
@@ -57,6 +59,8 @@ let
     # path to force users to declare their use of these libraries.
     "--with-lib-path=:"
     "--disable-gold"
+    # unused in the bootstrap path and removed from the output
+    "--disable-libctf"
     "--disable-plugins"
   ];
 in
@@ -83,6 +87,7 @@ bash.runCommand "${pname}-${version}"
       result:
       bash.runCommand "${pname}-get-version-${version}" { } ''
         ${result}/bin/ld --version
+        ${result}/${hostPlatform.config}/bin/ld --version
         mkdir $out
       '';
   }
@@ -106,5 +111,17 @@ bash.runCommand "${pname}-${version}"
 
     # gprof/addr2line/elfedit + man pages are unused downstream.
     rm -f $out/bin/gprof $out/bin/addr2line $out/bin/elfedit
-    rm -rf $out/share/info $out/share/man
+    rm -rf $out/include $out/lib $out/share
+
+    # The target-prefixed tools duplicate the unprefixed tools byte-for-byte.
+    # Keep the conventional target-prefixed paths, but make them symlinks.
+    targetBin=$out/${hostPlatform.config}/bin
+    if [ -d "$targetBin" ]; then
+      for tool in ar as ld ld.bfd nm objcopy objdump ranlib readelf strip; do
+        if [ -e "$targetBin/$tool" ] && cmp -s "$out/bin/$tool" "$targetBin/$tool"; then
+          rm "$targetBin/$tool"
+          ln -s ../../bin/$tool "$targetBin/$tool"
+        fi
+      done
+    fi
   ''