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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546# SPDX-License-Identifier: GPL-2.0-only## Build userspace programs for the target system#
# Executables compiled from a single .c fileuser-csingle := $(foreach m, $(userprogs), $(if $($(m)-objs),,$(m)))
# Executables linked based on several .o filesuser-cmulti := $(foreach m, $(userprogs), $(if $($(m)-objs),$(m)))
# Objects compiled from .c filesuser-cobjs := $(sort $(foreach m, $(userprogs), $($(m)-objs)))
user-csingle := $(addprefix $(obj)/, $(user-csingle))user-cmulti := $(addprefix $(obj)/, $(user-cmulti))user-cobjs := $(addprefix $(obj)/, $(user-cobjs))
user_ccflags = -Wp,-MMD,$(depfile) $(KBUILD_USERCFLAGS) $(userccflags) \ $($(target-stem)-userccflags)user_ldflags = $(KBUILD_USERLDFLAGS) $(userldflags) $($(target-stem)-userldflags)user_ldlibs = $(userldlibs) $($(target-stem)-userldlibs)
# Create an executable from a single .c filequiet_cmd_user_cc_c = CC [U] $@ cmd_user_cc_c = $(CC) $(user_ccflags) $(user_ldflags) -o $@ $< \ $(user_ldlibs)$(user-csingle): $(obj)/%: $(src)/%.c FORCE $(call if_changed_dep,user_cc_c)
# Link an executable based on list of .o filesquiet_cmd_user_ld = LD [U] $@ cmd_user_ld = $(CC) $(user_ldflags) -o $@ \ $(addprefix $(obj)/, $($(target-stem)-objs)) $(user_ldlibs)$(user-cmulti): FORCE $(call if_changed,user_ld)$(call multi_depend, $(user-cmulti), , -objs)
# Create .o file from a .c filequiet_cmd_user_cc_o_c = CC [U] $@ cmd_user_cc_o_c = $(CC) $(user_ccflags) -c -o $@ $<$(user-cobjs): $(obj)/%.o: $(src)/%.c FORCE $(call if_changed_dep,user_cc_o_c)
targets += $(user-csingle) $(user-cmulti) $(user-cobjs)