diff --git a/plugins/clang/clangparsejob.cpp b/plugins/clang/clangparsejob.cpp
--- a/plugins/clang/clangparsejob.cpp
+++ b/plugins/clang/clangparsejob.cpp
@@ -172,6 +172,10 @@
         m_environment.addFrameworkDirectories(IDefinesAndIncludesManager::manager()->frameworkDirectories(file));
         m_environment.addDefines(IDefinesAndIncludesManager::manager()->defines(file));
         m_environment.setParserSettings(ClangSettingsManager::self()->parserSettings(file));
+        if (hasBuildSystemInfo) {
+            // Assume the builder invokes the compiler in the build directory.
+            m_environment.setWorkingDirectory(file->project()->buildSystemManager()->buildDirectory(file));
+        }
     } else {
         m_environment.addIncludes(IDefinesAndIncludesManager::manager()->includes(tuUrl.str()));
         m_environment.addFrameworkDirectories(IDefinesAndIncludesManager::manager()->frameworkDirectories(tuUrl.str()));
diff --git a/plugins/clang/duchain/clangparsingenvironment.h b/plugins/clang/duchain/clangparsingenvironment.h
--- a/plugins/clang/duchain/clangparsingenvironment.h
+++ b/plugins/clang/duchain/clangparsingenvironment.h
@@ -84,6 +84,9 @@
     void setPchInclude(const KDevelop::Path& path);
     KDevelop::Path pchInclude() const;
 
+    void setWorkingDirectory(const KDevelop::Path& path);
+    KDevelop::Path workingDirectory() const;
+
     void setTranslationUnitUrl(const KDevelop::IndexedString& url);
     KDevelop::IndexedString translationUnitUrl() const;
 
@@ -123,6 +126,7 @@
     // NOTE: As elements in QHash stored in an unordered sequence, we're using QMap instead
     QMap<QString, QString> m_defines;
     KDevelop::Path m_pchInclude;
+    KDevelop::Path m_workingDirectory;
     KDevelop::IndexedString m_tuUrl;
     Quality m_quality = Unknown;
     ParserSettings m_parserSettings;
diff --git a/plugins/clang/duchain/clangparsingenvironment.cpp b/plugins/clang/duchain/clangparsingenvironment.cpp
--- a/plugins/clang/duchain/clangparsingenvironment.cpp
+++ b/plugins/clang/duchain/clangparsingenvironment.cpp
@@ -103,6 +103,16 @@
     return m_pchInclude;
 }
 
+void ClangParsingEnvironment::setWorkingDirectory(const Path& path)
+{
+    m_workingDirectory = path;
+}
+
+Path ClangParsingEnvironment::workingDirectory() const
+{
+    return m_workingDirectory;
+}
+
 void ClangParsingEnvironment::setTranslationUnitUrl(const IndexedString& url)
 {
     m_tuUrl = url;
diff --git a/plugins/clang/duchain/parsesession.cpp b/plugins/clang/duchain/parsesession.cpp
--- a/plugins/clang/duchain/parsesession.cpp
+++ b/plugins/clang/duchain/parsesession.cpp
@@ -283,6 +283,13 @@
     smartArgs << writeDefinesFile(environment.defines());
     clangArguments << "-imacros" << smartArgs.last().constData();
 
+    if (!environment.workingDirectory().isEmpty()) {
+        QByteArray workingDirectory = environment.workingDirectory().toLocalFile().toUtf8();
+        workingDirectory.prepend("-working-directory");
+        smartArgs << workingDirectory;
+        clangArguments << workingDirectory.constData();
+    }
+
     // append extra args from environment variable
     static const auto extraArgs = ::extraArgs();
     for (const QByteArray& arg : extraArgs) {