diff --git a/lib/gc/CMakeLists.txt b/lib/gc/CMakeLists.txt
index 5d6c09ea7..e06fc8540 100644
--- a/lib/gc/CMakeLists.txt
+++ b/lib/gc/CMakeLists.txt
@@ -3,8 +3,14 @@ add_subdirectory(Transforms)
 add_subdirectory(ExecutionEngine)
 add_subdirectory(Runtime)
 
-gc_add_mlir_library(GcGpuCompiler GpuCompiler.cpp LINK_LIBS PUBLIC GcInterface
-                    GcGpuPasses)
+gc_add_mlir_library(
+  GcGpuCompiler
+  GpuCompiler.cpp
+  LINK_LIBS
+  PUBLIC
+  GcInterface
+  GcGpuPasses
+  GcJitEngine)
 
 get_property(GC_MLIR_LIBS GLOBAL PROPERTY GC_MLIR_LIBS)
 get_property(GC_PASS_LIBS GLOBAL PROPERTY GC_PASS_LIBS)
diff --git a/scripts/build.sh b/scripts/build.sh
index 9f429dbbd..5eaf5fbe0 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -226,7 +226,9 @@ build_gc() {
 
   mkdir -p "$GC_BUILD_DIR"
   local lit_path="$LLVM_BUILD_DIR/bin/llvm-lit"
-  [ -f "$lit_path" ] || lit_path=$(which lit)
+  # -s, not -f: the CI cache truncates unused bin/ files to 0 bytes.
+  [ -s "$lit_path" ] || lit_path="$LLVM_INSTALL_DIR/bin/llvm-lit"
+  [ -s "$lit_path" ] || lit_path=$(which lit || true)
   [ -z "$LLVM_HASH" ] && LLVM_HASH=$(get_llvm_hash "$MLIR_DIR/../../..")
   GC_HASH=$(repo_hash . "$MLIR_DIR" "$lit_path" $LLVM_HASH $GC_BUILD_TYPE $GC_DYLINK $GC_CMAKE_ARGS)
   [ "$(get_gc_hash "$GC_INSTALL_DIR")" = "$GC_HASH" ] && echo "GC build is up-to-date" && return 0