scripts/Makefile.userprogs

File Facts

System

Linux kernel

Corpus path

scripts/Makefile.userprogs

Extension

.userprogs

Size

1628 bytes

Lines

46

Domain

Support Tooling And Documentation

Bucket

scripts

Inferred role

Support Tooling And Documentation: build/configuration rule

Status

atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0-only
#
# Build userspace programs for the target system
#

# Executables compiled from a single .c file
user-csingle	:= $(foreach m, $(userprogs), $(if $($(m)-objs),,$(m)))

# Executables linked based on several .o files
user-cmulti	:= $(foreach m, $(userprogs), $(if $($(m)-objs),$(m)))

# Objects compiled from .c files
user-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 file
quiet_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 files
quiet_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 file
quiet_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)

Annotation

• Atlas domain: Support Tooling And Documentation / scripts.
• Implementation status: atlas-only.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.