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-rw-r--r--mkspecs/win32-g++/qmake.conf4
1 files changed, 4 insertions, 0 deletions
diff --git a/mkspecs/win32-g++/qmake.conf b/mkspecs/win32-g++/qmake.conf
index ed131c6823..5e9923357f 100644
--- a/mkspecs/win32-g++/qmake.conf
+++ b/mkspecs/win32-g++/qmake.conf
@@ -22,4 +22,8 @@ QMAKE_CXXFLAGS_WARN_ON = $$QMAKE_CFLAGS_WARN_ON
QMAKE_LINK = $${CROSS_COMPILE}g++
QMAKE_LINK_C = $${CROSS_COMPILE}gcc
+QMAKE_CFLAGS_LTCG = -flto
+QMAKE_CXXFLAGS_LTCG = $$QMAKE_CFLAGS_LTCG
+QMAKE_LFLAGS_LTCG = $$QMAKE_CFLAGS_LTCG
+
load(qt_config)