[PATCH v7 2/8] kbuild: always create intermediate vmlinux.unstripped

Alexey Gladkov
2025-08-18T16:58:02Z

From: Masahiro Yamada <masahiroy@kernel.org>

Generate the intermediate vmlinux.unstripped regardless of
CONFIG_ARCH_VMLINUX_NEEDS_RELOCS.

If CONFIG_ARCH_VMLINUX_NEEDS_RELOCS is unset, vmlinux.unstripped and
vmlinux are identiacal.

This simplifies the build rule, and allows to strip more sections
by adding them to remove-section-y.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
scripts/Makefile.vmlinux | 45 ++++++++++++++++++++--------------------
1 file changed, 22 insertions(+), 23 deletions(-)

diff --git a/scripts/Makefile.vmlinux b/scripts/Makefile.vmlinux
index b64862dc6f08d..4f2d4c3fb7372 100644
--- a/scripts/Makefile.vmlinux
+++ b/scripts/Makefile.vmlinux
@@ -9,20 +9,6 @@ include $(srctree)/scripts/Makefile.lib

targets :=

-ifdef CONFIG_ARCH_VMLINUX_NEEDS_RELOCS
-vmlinux-final := vmlinux.unstripped
-
-quiet_cmd_strip_relocs = RSTRIP $@
- cmd_strip_relocs = $(OBJCOPY) --remove-section='.rel*' --remove-section=!'.rel*.dyn' $< $@
-
-vmlinux: $(vmlinux-final) FORCE
- $(call if_changed,strip_relocs)
-
-targets += vmlinux
-else
-vmlinux-final := vmlinux
-endif
-
%.o: %.c FORCE
$(call if_changed_rule,cc_o_c)

@@ -61,19 +47,19 @@ targets += .builtin-dtbs-list

ifdef CONFIG_GENERIC_BUILTIN_DTB
targets += .builtin-dtbs.S .builtin-dtbs.o
-$(vmlinux-final): .builtin-dtbs.o
+vmlinux.unstripped: .builtin-dtbs.o
endif

-# vmlinux
+# vmlinux.unstripped
# ---------------------------------------------------------------------------

ifdef CONFIG_MODULES
targets += .vmlinux.export.o
-$(vmlinux-final): .vmlinux.export.o
+vmlinux.unstripped: .vmlinux.export.o
endif

ifdef CONFIG_ARCH_WANTS_PRE_LINK_VMLINUX
-$(vmlinux-final): arch/$(SRCARCH)/tools/vmlinux.arch.o
+vmlinux.unstripped: arch/$(SRCARCH)/tools/vmlinux.arch.o

arch/$(SRCARCH)/tools/vmlinux.arch.o: vmlinux.o FORCE
$(Q)$(MAKE) $(build)=arch/$(SRCARCH)/tools $@
@@ -86,17 +72,30 @@ cmd_link_vmlinux = \
$< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)" "$@"; \
$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)

-targets += $(vmlinux-final)
-$(vmlinux-final): scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) FORCE
+targets += vmlinux.unstripped
+vmlinux.unstripped: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) FORCE
+$(call if_changed_dep,link_vmlinux)
ifdef CONFIG_DEBUG_INFO_BTF
-$(vmlinux-final): $(RESOLVE_BTFIDS)
+vmlinux.unstripped: $(RESOLVE_BTFIDS)
endif

ifdef CONFIG_BUILDTIME_TABLE_SORT
-$(vmlinux-final): scripts/sorttable
+vmlinux.unstripped: scripts/sorttable
endif

+# vmlinux
+# ---------------------------------------------------------------------------
+
+remove-section-y :=
+remove-section-$(CONFIG_ARCH_VMLINUX_NEEDS_RELOCS) += '.rel*'
+
+quiet_cmd_strip_relocs = OBJCOPY $@
+ cmd_strip_relocs = $(OBJCOPY) $(addprefix --remove-section=,$(remove-section-y)) $< $@
+
+targets += vmlinux
+vmlinux: vmlinux.unstripped FORCE
+ $(call if_changed,strip_relocs)
+
# modules.builtin.ranges
# ---------------------------------------------------------------------------
ifdef CONFIG_BUILTIN_MODULE_RANGES
@@ -110,7 +109,7 @@ modules.builtin.ranges: $(srctree)/scripts/generate_builtin_ranges.awk \
modules.builtin vmlinux.map vmlinux.o.map FORCE
$(call if_changed,modules_builtin_ranges)

-vmlinux.map: $(vmlinux-final)
+vmlinux.map: vmlinux.unstripped
@:

endif
--
2.50.1