build: replace mold with the wild linker

scripts/clang-wild

@@ -0,0 +1,5 @@
+#!/usr/bin/env sh
+# Link via clang+wild. Wild sits behind the linker (not a rustflag) so a
+# cross-toolchain that overrides the linker drops it instead of choking on
+# --ld-path. Needs clang and wild on PATH.
+exec clang --ld-path=wild "$@"

scripts/ld-wrapper

@@ -1,38 +0,0 @@
-#!/usr/bin/env sh
-# Invoke mold, then strip junk sections from the output binary with objcopy.
-# This (more or less) removes sections that mold cannot discard itself, such as:
-#  - .eh_frame / .eh_frame_hdr  - unwind tables from compiler_builtins
-#  - .dynstr                     - mold emits this, even for fully static binaries
-#  - .comment                   - compiler version string
-#
-#  We forward everything to mold via -fuse-ld, then post-process the output in place.
-
-set -eu
-
-# Locate the output file and detect static linking
-IS_STATIC=0
-OUTPUT=""
-prev=""
-for arg in "$@"; do
-	case "$arg" in
-		-static) IS_STATIC=1 ;;
-	esac
-	if [ "$prev" = "-o" ]; then
-		OUTPUT="$arg"
-	fi
-	prev="$arg"
-done
-
-# Invoke mold via the cc driver, forward all original arguments
-cc -fuse-ld=mold "$@"
-
-# Only strip sections from fully static binaries.
-# Dynamic executables (i.e. build scripts, proc-macros) need .dynstr at runtime.
-if [ "$IS_STATIC" = 1 ] && [ -n "$OUTPUT" ] && [ -f "$OUTPUT" ]; then
-	objcopy \
-		--remove-section=.eh_frame \
-		--remove-section=.eh_frame_hdr \
-		--remove-section=.dynstr \
-		--remove-section=.comment \
-		"$OUTPUT"
-fi