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@@ -9,3 +9,13 @@
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+KBUILD_CFLAGS += $(call cc-option,-U_FORTIFY_SOURCE)
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+
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KBUILD_CFLAGS += $(cflags-y)
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+--- a/arch/um/Makefile-x86_64
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++++ b/arch/um/Makefile-x86_64
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+@@ -24,3 +24,7 @@ LINK-y += -m64
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+
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+ # Do unit-at-a-time unconditionally on x86_64, following the host
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+ KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
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++
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++# disable compile-time buffer checks, enabled by default on Ubuntu 8.10
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++# and later
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++KBUILD_CFLAGS += $(call cc-option,-U_FORTIFY_SOURCE)
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