Revert "Makefile: Disable CC_STACKPROTECTOR & CCACHE for building"

KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})

endif

# Handle stack protector mode.

ifdef CONFIG_CC_STACKPROTECTOR_REGULAR

  stackp-flag := -fstack-protector

  ifeq ($(call cc-option, $(stackp-flag)),)

    $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \

             -fstack-protector not supported by compiler)

  endif

else

ifdef CONFIG_CC_STACKPROTECTOR_STRONG

  stackp-flag := -fstack-protector-strong

  ifeq ($(call cc-option, $(stackp-flag)),)

    $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \

	      -fstack-protector-strong not supported by compiler)

  endif

else

  # Force off for distro compilers that enable stack protector by default.

  stackp-flag := $(call cc-option, -fno-stack-protector)

endif

endif

KBUILD_CFLAGS += $(stackp-flag)

# This warning generated too much noise in a regular build.

# Use make W=1 to enable this warning (see scripts/Makefile.build)

KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)