linux-kernel - [PATCH] ia64: prefix header search path with $(srctree)/

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Message-Id: <1548400703-27945-1-git-send-email-yamada.masahiro@socionext.com>
Date:   Fri, 25 Jan 2019 16:18:23 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Tony Luck <tony.luck@...el.com>, Fenghua Yu <fenghua.yu@...el.com>,
        linux-ia64@...r.kernel.org
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] ia64: prefix header search path with $(srctree)/

Currently, the Kbuild core manipulates header search paths in a crazy
way [1].

To fix this mess, I want all Makefiles to add explicit $(srctree)/ to
the search paths in the srctree. Some Makefiles are already written in
that way, but not all. The goal of this work is to make the notation
consistent, and finally get rid of the gross hacks.

Having whitespaces after -I does not matter since commit 48f6e3cf5bc6
("kbuild: do not drop -I without parameter").

I removed some header search paths because I was able to build ia64
without them.

[1]: https://patchwork.kernel.org/patch/9632347/

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

 arch/ia64/sn/kernel/Makefile     | 2 +-
 arch/ia64/sn/kernel/sn2/Makefile | 2 --
 arch/ia64/sn/pci/Makefile        | 2 --
 arch/ia64/sn/pci/pcibr/Makefile  | 2 +-
 4 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/arch/ia64/sn/kernel/Makefile b/arch/ia64/sn/kernel/Makefile
index d27df1d..9c349dd 100644
--- a/arch/ia64/sn/kernel/Makefile
+++ b/arch/ia64/sn/kernel/Makefile
@@ -7,7 +7,7 @@
 # Copyright (C) 1999,2001-2006,2008 Silicon Graphics, Inc.  All Rights Reserved.
 #
 
-ccflags-y := -Iarch/ia64/sn/include
+ccflags-y := -I $(srctree)/arch/ia64/sn/include
 
 obj-y				+= setup.o bte.o bte_error.o irq.o mca.o idle.o \
 				   huberror.o io_acpi_init.o io_common.o \
diff --git a/arch/ia64/sn/kernel/sn2/Makefile b/arch/ia64/sn/kernel/sn2/Makefile
index 3d09108..170bde4 100644
--- a/arch/ia64/sn/kernel/sn2/Makefile
+++ b/arch/ia64/sn/kernel/sn2/Makefile
@@ -9,7 +9,5 @@
 # sn2 specific kernel files
 #
 
-ccflags-y := -Iarch/ia64/sn/include
-
 obj-y += cache.o io.o ptc_deadlock.o sn2_smp.o sn_proc_fs.o \
 	 prominfo_proc.o timer.o timer_interrupt.o sn_hwperf.o
diff --git a/arch/ia64/sn/pci/Makefile b/arch/ia64/sn/pci/Makefile
index df2a901..321576b 100644
--- a/arch/ia64/sn/pci/Makefile
+++ b/arch/ia64/sn/pci/Makefile
@@ -7,6 +7,4 @@
 #
 # Makefile for the sn pci general routines.
 
-ccflags-y := -Iarch/ia64/sn/include
-
 obj-y := pci_dma.o tioca_provider.o tioce_provider.o pcibr/
diff --git a/arch/ia64/sn/pci/pcibr/Makefile b/arch/ia64/sn/pci/pcibr/Makefile
index 396bcae..712f6af 100644
--- a/arch/ia64/sn/pci/pcibr/Makefile
+++ b/arch/ia64/sn/pci/pcibr/Makefile
@@ -7,7 +7,7 @@
 #
 # Makefile for the sn2 io routines.
 
-ccflags-y := -Iarch/ia64/sn/include
+ccflags-y := -I $(srctree)/arch/ia64/sn/include
 
 obj-y				+=  pcibr_dma.o pcibr_reg.o \
 				    pcibr_ate.o pcibr_provider.o
-- 
2.7.4