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+# This file contains feature macro definitions specific to the
+# base 'x86' platform ABI. This one must *strictly* match the NDK x86 ABI
+# which mandates specific CPU extensions to be available.
+#
+# It is also used to build full_x86-eng / sdk_x86-eng platform images that
+# are run in the emulator under KVM emulation (i.e. running directly on
+# the host development machine's CPU).
+#
+
+# If your target device doesn't support the four following features, then
+# it cannot be compatible with the NDK x86 ABI. You should define a new
+# target arch variant (e.g. "x86-mydevice") and a corresponding file
+# under build/core/combo/arch/x86/
+#
+ARCH_X86_HAVE_MMX := true
+ARCH_X86_HAVE_SSE := true
+ARCH_X86_HAVE_SSE2 := true
+ARCH_X86_HAVE_SSE3 := true
+
+# These features are optional and shall not be included in the base platform
+# Otherwise, they sdk_x86-eng system images might fail to run on some
+# developer machines.
+#
+
+ARCH_X86_HAVE_SSSE3 := false
+ARCH_X86_HAVE_MOVBE := false
+ARCH_X86_HAVE_POPCNT := false
+
+
+# XXX: This flag is probably redundant, because it should be set by default
+# by our toolchain binaries. However, there have been reports that this may
+# not always work as intended, so keep it unless we have the time to check
+# everything properly.
+
+TARGET_GLOBAL_CFLAGS += -march=i686