kbuild: refactor final link of sparc32
sparc32 uses an additional final link to support btfix.
Introduce a new set of exported variables in the top-level Makefile
to make the extra linking step simpler.
sparc32 has hardcoded knowledge of kallsyms support. This fix
include support for EXTRA_KALLSYM_PASS=1.
The ugly part is that it is hardcoded in the arch/sparc/boot
Makefile.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Michal Marek <mmarek@suse.cz>
diff --git a/Makefile b/Makefile
index 06aff74..7ea0c07 100644
--- a/Makefile
+++ b/Makefile
@@ -723,6 +723,11 @@
libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
libs-y := $(libs-y1) $(libs-y2)
+# externally visible symbols
+export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
+export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y)
+export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
+
# Build vmlinux
# ---------------------------------------------------------------------------
# vmlinux is built from the objects selected by $(vmlinux-init) and
diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile
index eddcfb3..3195f77 100644
--- a/arch/sparc/Makefile
+++ b/arch/sparc/Makefile
@@ -72,17 +72,6 @@
drivers-$(CONFIG_OPROFILE) += arch/sparc/oprofile/
-# Export what is needed by arch/sparc/boot/Makefile
-export VMLINUX_INIT VMLINUX_MAIN
-VMLINUX_INIT := $(head-y) $(init-y)
-VMLINUX_MAIN := $(core-y) kernel/ mm/ fs/ ipc/ security/ crypto/ block/
-VMLINUX_MAIN += $(patsubst %/, %/lib.a, $(libs-y)) $(libs-y)
-VMLINUX_MAIN += $(drivers-y) $(net-y)
-
-ifdef CONFIG_KALLSYMS
-export kallsyms.o := .tmp_kallsyms2.o
-endif
-
boot := arch/sparc/boot
# Default target
diff --git a/arch/sparc/boot/Makefile b/arch/sparc/boot/Makefile
index d56d199..78f1994 100644
--- a/arch/sparc/boot/Makefile
+++ b/arch/sparc/boot/Makefile
@@ -39,11 +39,15 @@
echo 'cmd_$@ := $(cmd_image)' > $(@D)/.$(@F).cmd
endef
-BTOBJS := $(patsubst %/, %/built-in.o, $(VMLINUX_INIT))
-BTLIBS := $(patsubst %/, %/built-in.o, $(VMLINUX_MAIN))
-LDFLAGS_image := -T arch/sparc/kernel/vmlinux.lds $(BTOBJS) \
- --start-group $(BTLIBS) --end-group \
- $(kallsyms.o) $(obj)/btfix.o
+# Support for kallsyms
+kallsyms-$(CONFIG_KALLSYMS) := .tmp_kallsyms2.o
+ifdef KALLSYMS_EXTRA_PASS
+ kallsyms-$(CONFIG_KALLSYMS) := .tmp_kallsyms3.o
+endif
+
+LDFLAGS_image := -T $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) \
+ --start-group $(KBUILD_VMLINUX_MAIN) --end-group \
+ $(kallsyms-y) $(obj)/btfix.o
# Link the final image including btfixup'ed symbols.
# This is a replacement for the link done in the top-level Makefile.