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-rw-r--r--src/libs/cplusplus/FastPreprocessor.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libs/cplusplus/FastPreprocessor.cpp b/src/libs/cplusplus/FastPreprocessor.cpp
index 481e2c715a..00b6f8eeda 100644
--- a/src/libs/cplusplus/FastPreprocessor.cpp
+++ b/src/libs/cplusplus/FastPreprocessor.cpp
@@ -38,12 +38,14 @@ FastPreprocessor::FastPreprocessor(const Snapshot &snapshot)
QByteArray FastPreprocessor::run(QString fileName, const QString &source)
{
+#ifdef QTCREATOR_WITH_MERGED_ENVIRONMENT
if (Document::Ptr doc = _snapshot.value(fileName)) {
_merged.insert(fileName);
foreach (const Document::Include &i, doc->includes())
mergeEnvironment(i.fileName());
}
+#endif
const QByteArray preprocessed = _preproc(fileName, source);
return preprocessed;