diff options
| author | Masahiro Yamada <masahiroy@kernel.org> | 2026-05-29 11:53:44 -0700 |
|---|---|---|
| committer | Nathan Chancellor <nathan@kernel.org> | 2026-05-29 13:44:29 -0700 |
| commit | 9c72d26e9fe3be79dd1d8a2ba00a033503ffd27d (patch) | |
| tree | 7582dadc4a28f0a04395e1a8cf73205df617646e /Makefile | |
| parent | d7231d8cb262b1e350c00271bf53d54414b4f3b1 (diff) | |
kbuild: move vmlinux.a build rule to scripts/Makefile.vmlinux_a
Move the build rule for vmlinux.a to a separate file in preparation
for supporting distributed builds with Clang ThinLTO.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Rong Xu <xur@google.com>
Tested-by: Piotr Gorski <piotrgorski@cachyos.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Rong Xu <xur@google.com>
Link: https://patch.msgid.link/20260529185347.2418373-2-xur@google.com
[nathan: Squash in forward fix from Rong around '--thin' to $(AR)
https://patch.msgid.link/20260529185347.2418373-3-xur@google.com]
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 16 |
1 files changed, 6 insertions, 10 deletions
@@ -1291,7 +1291,7 @@ export ARCH_DRIVERS := $(drivers-y) $(drivers-m) KBUILD_VMLINUX_OBJS := built-in.a $(patsubst %/, %/lib.a, $(filter %/, $(libs-y))) KBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y)) -export KBUILD_VMLINUX_LIBS +export KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds ifdef CONFIG_TRIM_UNUSED_KSYMS @@ -1300,16 +1300,12 @@ ifdef CONFIG_TRIM_UNUSED_KSYMS KBUILD_MODULES := y endif -# '$(AR) mPi' needs 'T' to workaround the bug of llvm-ar <= 14 -quiet_cmd_ar_vmlinux.a = AR $@ - cmd_ar_vmlinux.a = \ - rm -f $@; \ - $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \ - $(AR) mPiT $$($(AR) t $@ | sed -n 1p) $@ $$($(AR) t $@ | grep -F -f $(srctree)/scripts/head-object-list.txt) +PHONY += vmlinux_a +vmlinux_a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt FORCE + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.vmlinux_a -targets += vmlinux.a -vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt FORCE - $(call if_changed,ar_vmlinux.a) +vmlinux.a: vmlinux_a + @: PHONY += vmlinux_o vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) |