linux-kernel - [PATCH 1/3] um: Run host archheaders, allow use of host generated headers

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Date:	Mon,  5 Dec 2011 17:05:47 -0800
From:	"H. Peter Anvin" <hpa@...ux.intel.com>
To:	Jeff Dike <jdike@...toit.com>, Richard Weinberger <richard@....at>
Cc:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	user-mode-linux-devel@...ts.sourceforge.net,
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
	"H. Peter Anvin" <hpa@...ux.intel.com>
Subject: [PATCH 1/3] um: Run host archheaders, allow use of host generated headers

From: "H. Peter Anvin" <hpa@...ux.intel.com>

Run the "archheaders" target for the host architecture, for
architectures (like x86, now) that want to generate some of the
necessary header files.

Add $(HOST_DIR)/include/generated to the include path so we then pick
them up.

Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
---
 arch/um/Makefile |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/arch/um/Makefile b/arch/um/Makefile
index 7730af6..00210e9 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -64,7 +64,8 @@ USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\
 #This will adjust *FLAGS accordingly to the platform.
 include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
 
-KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/include
+KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/include \
+		   -I$(HOST_DIR)/include/generated
 
 # -Derrno=kernel_errno - This turns all kernel references to errno into
 # kernel_errno to separate them from the libc errno.  This allows -fno-common
@@ -96,6 +97,10 @@ endef
 
 KBUILD_KCONFIG := $(HOST_DIR)/um/Kconfig
 
+archheaders:
+	$(Q)$(MAKE) -C '$(KBUILD_SRC)' KBUILD_SRC= \
+		ARCH=$(SUBARCH) O='$(objtree)' archheaders
+
 archprepare: include/generated/user_constants.h
 
 LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
-- 
1.7.6.4

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