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-rw-r--r--mkspecs/features/ltcg.prf9
1 files changed, 6 insertions, 3 deletions
diff --git a/mkspecs/features/ltcg.prf b/mkspecs/features/ltcg.prf
index ccf0226272..f2dbc6fa9e 100644
--- a/mkspecs/features/ltcg.prf
+++ b/mkspecs/features/ltcg.prf
@@ -28,7 +28,10 @@ CONFIG(release, debug|release) {
}
load(link_ltcg)
- QMAKE_CFLAGS *= $$QMAKE_CFLAGS_LTCG
- QMAKE_CXXFLAGS *= $$QMAKE_CXXFLAGS_LTCG
- QMAKE_LFLAGS *= $$QMAKE_LFLAGS_LTCG
+ QMAKE_CFLAGS -= $$QMAKE_CFLAGS_LTCG
+ QMAKE_CFLAGS += $$QMAKE_CFLAGS_LTCG
+ QMAKE_CXXFLAGS -= $$QMAKE_CXXFLAGS_LTCG
+ QMAKE_CXXFLAGS += $$QMAKE_CXXFLAGS_LTCG
+ QMAKE_LFLAGS -= $$QMAKE_LFLAGS_LTCG
+ QMAKE_LFLAGS += $$QMAKE_LFLAGS_LTCG
}