--- mkspecs/common/g++-macx.conf.orig
+++ mkspecs/common/g++-macx.conf
@@ -16,16 +16,20 @@
 
 QMAKE_LFLAGS_STATIC_LIB += -all_load
 
-QMAKE_CFLAGS_X86_64 += -Xarch_x86_64 -mmacosx-version-min=10.5
-QMAKE_CFLAGS_PPC_64 += -Xarch_ppc64 -mmacosx-version-min=10.5
+QMAKE_CFLAGS_X86_64 += -Xarch_x86_64 -mmacosx-version-min=@MACOSX_DEPLOYMENT_TARGET@
+QMAKE_CFLAGS_PPC_64 += -Xarch_ppc64 -mmacosx-version-min=@MACOSX_DEPLOYMENT_TARGET@
 
 QMAKE_CXXFLAGS_X86_64         = $$QMAKE_CFLAGS_X86_64
 QMAKE_CXXFLAGS_PPC_64         = $$QMAKE_CFLAGS_PPC_64
 QMAKE_OBJECTIVE_CFLAGS_X86_64 = $$QMAKE_CFLAGS_X86_64
 QMAKE_OBJECTIVE_CFLAGS_PPC_64 = $$QMAKE_CFLAGS_PPC_64
+QMAKE_OBJECTIVE_CXXFLAGS_X86_64 = $$QMAKE_CFLAGS_X86_64
+QMAKE_OBJECTIVE_CXXFLAGS_PPC_64 = $$QMAKE_CFLAGS_PPC_64
 QMAKE_LFLAGS_X86_64           = $$QMAKE_CFLAGS_X86_64
 QMAKE_LFLAGS_PPC_64           = $$QMAKE_CFLAGS_PPC_64
 
+QMAKE_OBJECTIVE_CXXFLAGS_CXX11 = $$QMAKE_CXXFLAGS_CXX11
+
 QMAKE_OBJCFLAGS_PRECOMPILE       = -x objective-c-header -c ${QMAKE_PCH_INPUT} -o ${QMAKE_PCH_OUTPUT}
 QMAKE_OBJCFLAGS_USE_PRECOMPILE   = $$QMAKE_CFLAGS_USE_PRECOMPILE
 QMAKE_OBJCXXFLAGS_PRECOMPILE     = -x objective-c++-header -c ${QMAKE_PCH_INPUT} -o ${QMAKE_PCH_OUTPUT}