diff --git a/qbs/modules/libclang/libclang.qbs b/qbs/modules/libclang/libclang.qbs
index eaadeb3bfa78018e211de4ec9dd630568dae0882..6e15ed36d77614ac3336d2707c274835e16b1596 100644
--- a/qbs/modules/libclang/libclang.qbs
+++ b/qbs/modules/libclang/libclang.qbs
@@ -27,7 +27,10 @@ Module {
     property stringList llvmLibs: clangProbe.llvmLibs
 
     validate: {
-        if (!clangProbe.found)
+        if (!clangProbe.found) {
+            console.warn("Set LLVM_INSTALL_DIR to build the Clang Code Model."
+                         + " For details, see doc/src/editors/creator-clang-codemodel.qdoc.");
             throw "No usable libclang found";
+        }
     }
 }
diff --git a/src/plugins/plugins.pro b/src/plugins/plugins.pro
index cae83a34311b3eac244e25c5324be90775a4f4b9..071405cf51e061888a21c134f7dbefe5e3601618 100644
--- a/src/plugins/plugins.pro
+++ b/src/plugins/plugins.pro
@@ -75,6 +75,9 @@ exists(../shared/qbs/qbs.pro)|!isEmpty(QBS_INSTALL_DIR): \
 isEmpty(LLVM_INSTALL_DIR):LLVM_INSTALL_DIR=$$(LLVM_INSTALL_DIR)
 exists($$LLVM_INSTALL_DIR) {
     SUBDIRS += clangcodemodel
+} else {
+    warning("Set LLVM_INSTALL_DIR to build the Clang Code Model. " \
+            "For details, see doc/src/editors/creator-clang-codemodel.qdoc.")
 }
 
 isEmpty(IDE_PACKAGE_MODE) {