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-rw-r--r--mkspecs/win32-clang-g++/qmake.conf8
1 files changed, 8 insertions, 0 deletions
diff --git a/mkspecs/win32-clang-g++/qmake.conf b/mkspecs/win32-clang-g++/qmake.conf
index 4630ec4602..59d42176f0 100644
--- a/mkspecs/win32-clang-g++/qmake.conf
+++ b/mkspecs/win32-clang-g++/qmake.conf
@@ -24,4 +24,12 @@ QMAKE_CXXFLAGS_WARN_ON = $$QMAKE_CFLAGS_WARN_ON
QMAKE_LINK = $${CROSS_COMPILE}clang++
QMAKE_LINK_C = $${CROSS_COMPILE}clang
+QMAKE_CFLAGS_LTCG = -flto=thin
+QMAKE_CXXFLAGS_LTCG = $$QMAKE_CFLAGS_LTCG
+QMAKE_CFLAGS_LTCG_FATOBJECTS = -flto
+QMAKE_CXXFLAGS_LTCG_FATOBJECTS = $$QMAKE_CFLAGS_LTCG_FATOBJECTS
+QMAKE_LFLAGS_LTCG = $$QMAKE_CFLAGS_LTCG
+
+QMAKE_CFLAGS_OPTIMIZE_SIZE = -Oz
+
load(qt_config)