Merge pull request #27271 from compnerd/swift-compiler

build: try harder to pass along CMAKE_Swift_COMPILER

Author: compnerd

utils/build-script-impl

@@ -2779,6 +2779,7 @@ for host in "${ALL_HOSTS[@]}"; do
                     -DCMAKE_C_COMPILER:PATH="${LLVM_BIN}/clang"
                     -DCMAKE_CXX_COMPILER:PATH="${LLVM_BIN}/clang++"
                     -DCMAKE_SWIFT_COMPILER:PATH="${SWIFTC_BIN}"
+                    -DCMAKE_Swift_COMPILER:PATH="${SWIFTC_BIN}"
                     -DCMAKE_INSTALL_PREFIX:PATH="$(get_host_install_prefix ${host})"
                     -DCMAKE_INSTALL_LIBDIR:PATH="lib"