laptops-kernel/arch/um/scripts/Makefile.rules

# SPDX-License-Identifier: GPL-2.0
# ===========================================================================
# arch/um: Generic definitions
# ===========================================================================

USER_SINGLE_OBJS := \
	$(foreach f,$(patsubst %.o,%,$(obj-y)),$($(f)-objs))
USER_OBJS += $(filter %_user.o,$(obj-y) $(USER_SINGLE_OBJS))
USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file))

$(USER_OBJS:.o=.%): \
	c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) -include $(srctree)/include/linux/kern_levels.h -include user.h $(CFLAGS_$(basetarget).o)

# These are like USER_OBJS but filter USER_CFLAGS through unprofile instead of
# using it directly.
UNPROFILE_OBJS := $(foreach file,$(UNPROFILE_OBJS),$(obj)/$(file))

$(UNPROFILE_OBJS:.o=.%): \
	c_flags = -Wp,-MD,$(depfile) $(call unprofile,$(USER_CFLAGS)) $(CFLAGS_$(basetarget).o)

$(USER_OBJS) $(UNPROFILE_OBJS): \
	CHECKFLAGS := $(patsubst $(NOSTDINC_FLAGS),,$(CHECKFLAGS))

# The stubs can't try to call mcount or update basic block data
define unprofile
	$(patsubst -pg,,$(patsubst -fprofile-arcs -ftest-coverage,,$(1)))
endef