From: Sam Ravnborg <sam@ravnborg.org>
To: linux arch <linux-arch@vger.kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
linux-kbuild <linux-kbuild@vger.kernel.org>,
Michal Marek <mmarek@suse.cz>
Cc: Richard Weinberger <richard@nod.at>,
"David S. Miller" <davem@davemloft.net>,
Arnaud Lacombe <lacombar@gmail.com>,
Andi Kleen <andi@firstfloor.org>
Subject: [PATCH 2/4] kbuild: refactor final link of sparc32
Date: Sat, 28 Apr 2012 22:58:39 +0200 [thread overview]
Message-ID: <20120428205839.GB7442@merkur.ravnborg.org> (raw)
In-Reply-To: <20120428205651.GA7426@merkur.ravnborg.org>
>From 8716c7f473ec65c57811bb21095354b813b48898 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Mon, 23 Apr 2012 20:29:07 +0200
Subject: [PATCH 2/4] 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 have 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>
---
Makefile | 5 +++++
arch/sparc/Makefile | 11 -----------
arch/sparc/boot/Makefile | 14 +++++++++-----
3 files changed, 14 insertions(+), 16 deletions(-)
diff --git a/Makefile b/Makefile
index 287aee4..00bf5b1 100644
--- a/Makefile
+++ b/Makefile
@@ -727,6 +727,11 @@ libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
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 $(vmlinux-init) and
diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile
index eddcfb3..3195f77 100644
--- a/arch/sparc/Makefile
+++ b/arch/sparc/Makefile
@@ -72,17 +72,6 @@ libs-y += arch/sparc/lib/
drivers-$(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) $(net-y)
-
-ifdef CONFIG_KALLSYMS
-export kallsyms.o := .tmp_kallsyms2.o
-endif
-
boot := arch/sparc/boot
# Default target
diff --git a/arch/sparc/boot/Makefile b/arch/sparc/boot/Makefile
index d56d199..78f1994 100644
--- a/arch/sparc/boot/Makefile
+++ b/arch/sparc/boot/Makefile
@@ -39,11 +39,15 @@ define rule_image
echo 'cmd_$@ := $(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.
--
1.7.10
next prev parent reply other threads:[~2012-04-28 20:58 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-28 20:56 [PATCH v2 0/4] kbuild: Move vmlinux link out of top-level Makefile Sam Ravnborg
2012-04-28 20:58 ` [PATCH 1/4] kbuild: drop unused KBUILD_VMLINUX_OBJS from " Sam Ravnborg
2012-04-28 20:58 ` Sam Ravnborg [this message]
2012-04-29 8:27 ` [PATCH 2/4] kbuild: refactor final link of sparc32 Geert Uytterhoeven
2012-04-28 20:59 ` [PATCH 3/4] kbuild: link of vmlinux moved to a script Sam Ravnborg
2012-04-29 8:28 ` Geert Uytterhoeven
2012-05-04 23:05 ` Michal Marek
2012-05-05 8:29 ` Sam Ravnborg
2012-05-07 23:15 ` Tony Luck
2012-05-08 16:51 ` Sam Ravnborg
2012-05-08 17:39 ` Tony Luck
2012-05-08 17:53 ` [PATCH] kbuild: fix ia64 link Sam Ravnborg
2012-05-10 12:22 ` Michal Marek
2012-05-09 22:58 ` [PATCH 3/4] kbuild: link of vmlinux moved to a script Paul Gortmaker
2012-05-10 5:16 ` Sam Ravnborg
2012-05-10 12:22 ` Michal Marek
2012-05-10 14:44 ` Paul Gortmaker
2012-05-15 22:20 ` Michal Marek
2012-09-06 20:43 ` James Hogan
2012-04-28 21:00 ` [PATCH 4/4] kbuild: document KBUILD_LDS, KBUILD_VMLINUX_{INIT,MAIN} and LDFLAGS_vmlinux Sam Ravnborg
2012-04-29 8:29 ` Geert Uytterhoeven
2012-04-29 8:26 ` [PATCH v2 0/4] kbuild: Move vmlinux link out of top-level Makefile Geert Uytterhoeven
2012-04-29 11:03 ` Sam Ravnborg
-- strict thread matches above, loose matches on Subject: below --
2012-04-24 19:41 [PATCH " Sam Ravnborg
2012-04-24 19:43 ` [PATCH 2/4] kbuild: refactor final link of sparc32 Sam Ravnborg
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