Merge pull request #1500 from hadfl/clang-18

clang-18: set default linker for cross-compiling

build/clang/build-18.sh

@@ -73,6 +73,7 @@ post_install() {
             cxxinc="$CROSSTOOLS/$a/${TRIPLETS[$a]}/include/c++/$crossgccver"
             $CAT << EOF >| $cfgfile
 --gcc-install-dir=$CROSSTOOLS/$a/lib/gcc/${TRIPLETS[$a]}/$crossgccver
+-fuse-ld=$CROSSTOOLS/$a/bin/ld
 -stdlib++-isystem$cxxinc
 -stdlib++-isystem$cxxinc/${TRIPLETS[$a]}
 -stdlib++-isystem$cxxinc/backward