diff --git a/CMakeLists.txt b/CMakeLists.txt
index 14d730d..10b9075 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -77,9 +77,6 @@ endif()
 
 add_compile_definitions(__LZ4__)
 
-set(DATAFRAME_IN_MAIN TRUE)
-add_subdirectory(extensions/dataframes)
-
 set(HIPO_SOURCE_FILES
         hipo4/bank.cpp
         hipo4/datastream.cpp
@@ -146,6 +143,16 @@ target_include_directories(hipo4 PUBLIC
 target_link_libraries(hipo4 PUBLIC PkgConfig::LZ4 )
 target_link_libraries(hipo4_static PUBLIC PkgConfig::LZ4)
 
+list(APPEND PKGCONFIG_LIBS hipo4)
+
+# build extensions
+option(BUILD_DATAFRAMES "Build dataframes extension" ON)
+set(WITH_DATAFRAMES FALSE)
+if(BUILD_DATAFRAMES)
+    set(DATAFRAME_IN_MAIN TRUE)
+    add_subdirectory(extensions/dataframes)
+endif()
+
 install(TARGETS hipo4
         EXPORT hipo4-export
         LIBRARY DESTINATION lib
@@ -177,6 +184,9 @@ configure_package_config_file( cmake/hipo4Config.cmake.in
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/hipo4Config.cmake ${CMAKE_CURRENT_BINARY_DIR}/hipo4ConfigVersion.cmake
         DESTINATION ${CMAKE_INSTALL_PREFIX}/lib/cmake/hipo4)
 
+# pkgconfig file
+list(TRANSFORM PKGCONFIG_LIBS PREPEND -l)
+list(JOIN PKGCONFIG_LIBS " " PKGCONFIG_LIB_ARGS)
 configure_file(${PROJECT_SOURCE_DIR}/cmake/hipo4.pc.in
                ${PROJECT_BINARY_DIR}/hipo4.pc
                @ONLY)
diff --git a/cmake/hipo4.pc.in b/cmake/hipo4.pc.in
index 3e61d3b..a9f593d 100644
--- a/cmake/hipo4.pc.in
+++ b/cmake/hipo4.pc.in
@@ -2,9 +2,11 @@ prefix=${pcfiledir}/../..
 includedir=${prefix}/include
 libdir=${prefix}/lib
 
+with_dataframes=@WITH_DATAFRAMES@
+
 Name: hipo4
 Description: High Performance Output data format for experimental physics
 Version: @HIPO_VERSION@
 Requires: liblz4 >= @LZ4_VERSION@
-Libs: -L${libdir} -lhipo4
+Libs: -L${libdir} @PKGCONFIG_LIB_ARGS@
 Cflags: -I${includedir}
diff --git a/extensions/dataframes/CMakeLists.txt b/extensions/dataframes/CMakeLists.txt
index ca29ed5..5b4be09 100644
--- a/extensions/dataframes/CMakeLists.txt
+++ b/extensions/dataframes/CMakeLists.txt
@@ -132,4 +132,7 @@ else()
     install(FILES ${CMAKE_CURRENT_BINARY_DIR}/HipoDataFrameConfig.cmake ${CMAKE_CURRENT_BINARY_DIR}/HipoDataFrameConfigVersion.cmake
             DESTINATION ${CMAKE_INSTALL_PREFIX}/lib/cmake/HipoDataFrame)
 
+    list(APPEND PKGCONFIG_LIBS HipoDataFrame)
+    set(PKGCONFIG_LIBS ${PKGCONFIG_LIBS} PARENT_SCOPE)
+    set(WITH_DATAFRAMES TRUE PARENT_SCOPE)
 endif()
diff --git a/extensions/dataframes/RHipoDS.hxx b/extensions/dataframes/RHipoDS.hxx
index 72af1f7..53fa85e 100644
--- a/extensions/dataframes/RHipoDS.hxx
+++ b/extensions/dataframes/RHipoDS.hxx
@@ -143,10 +143,7 @@ public:
    // Not required utility methods.
    int getEntries(){ return fHipoReader.getEntries(); }
 
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Winconsistent-missing-override"
 ClassDef(RHipoDS, 0);
-#pragma clang diagnostic pop
 
 };