From 977083c253a6c7ec282f1cf36c496ee280dbf069 Mon Sep 17 00:00:00 2001
From: "greg@kroah.com" <greg@kroah.com>
Date: Tue, 3 Feb 2004 00:51:51 -0800
Subject: [PATCH] [PATCH] add KERNEL_DIR option so that the distros will be
 happy

Based on a patch from Svetoslav Slavtchev <svetljo@gmx.de>
---
 Makefile                               | 13 ++++++++++---
 README                                 | 10 ++++++----
 extras/multipath/Makefile              |  4 ++--
 extras/multipath/libdevmapper/Makefile |  2 +-
 klibc/MCONFIG                          |  2 +-
 5 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/Makefile b/Makefile
index dd2f69759..e1846dd4c 100644
--- a/Makefile
+++ b/Makefile
@@ -41,6 +41,9 @@ LOCAL_CFG_DIR =	etc/udev
 HOTPLUG_EXEC =	$(ROOT)
 
 DESTDIR =
+
+KERNEL_DIR = /lib/modules/${shell uname -r}/build
+
 # override this to make udev look in a different location for it's config files
 prefix =
 exec_prefix =	${prefix}
@@ -135,7 +138,8 @@ ifeq ($(strip $(USE_KLIBC)),true)
 	KLIBC_BASE	= $(PWD)/klibc
 	KLIBC_DIR	= $(KLIBC_BASE)/klibc
 	INCLUDE_DIR	:= $(KLIBC_DIR)/include
-	LINUX_INCLUDE_DIR	:= $(KLIBC_BASE)/linux/include
+	LINUX_INCLUDE_DIR	:= $(KERNEL_DIR)/include
+#	LINUX_INCLUDE_DIR	:= $(KLIBC_BASE)/linux/include
 	include $(KLIBC_DIR)/arch/$(ARCH)/MCONFIG
 	# arch specific objects
 	ARCH_LIB_OBJS =	\
@@ -169,7 +173,10 @@ CFLAGS += -I$(PWD)/libsysfs
 all: $(ROOT) $(SENDER) $(UDEVD) $(HELPER)
 	@extras="$(EXTRAS)" ; for target in $$extras ; do \
 		echo $$target ; \
-		$(MAKE) prefix=$(prefix) LD="$(LD)" SYSFS="$(SYSFS)" \
+		$(MAKE) prefix=$(prefix) \
+			LD="$(LD)" \
+			SYSFS="$(SYSFS)" \
+			KERNEL_DIR="$(KERNEL_DIR)" \
 			-C $$target $@ ; \
 	done ; \
 
@@ -178,7 +185,7 @@ $(ROOT): $(LIBC)
 $(ARCH_LIB_OBJS) : $(CRT0)
 
 $(CRT0):
-	$(MAKE) -C klibc
+	$(MAKE) -C klibc KERNEL_DIR=$(KERNEL_DIR)
 
 TDB =	tdb/tdb.o	\
 	tdb/spinlock.o
diff --git a/README b/README
index 26032c35d..c63912101 100644
--- a/README
+++ b/README
@@ -52,15 +52,16 @@ To use:
 	DEBUG
 		if set to 'true', debugging messages will be sent to the syslog
 		as udev is run.  Default value is 'false'.
+	KERNEL_DIR
+		If this is not set it will default to /lib/modules/`uname -r`/build
+		This is used if USE_KLIBC=true to find the kernel include
+		directory that klibc needs to build against.  This must be set
+		if you are not building udev while running a 2.6 kernel.
 
       So, if you want to build udev using klibc with debugging messages, you
       would do:
 	make USE_KLIBC=true DEBUG=true
 
-      Note: If you want to use klibc, you will have to set up the "linux"
-            symlink properly.  See the file klibc/klibc/README and pay
-	    attention to step "a)" there.
-
 - Install the project:
 	make install
 
@@ -95,3 +96,4 @@ greg@kroah.com
 
 
 
+
diff --git a/extras/multipath/Makefile b/extras/multipath/Makefile
index 3f13532e1..0aac146a8 100644
--- a/extras/multipath/Makefile
+++ b/extras/multipath/Makefile
@@ -15,7 +15,7 @@ CC = gcc
 GCCINCDIR := ${shell $(CC) -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp"}
 CFLAGS = -pipe -g -O2 -Wall -Wunused -Wstrict-prototypes -nostdinc \
          -I$(klibcdir)/klibc/include -I$(klibcdir)/klibc/include/bits32 \
-         -I$(GCCINCDIR) -I$(klibcdir)/linux/include -I$(sysfsdir) -I.
+         -I$(GCCINCDIR) -I$(KERNEL_DIR)/include -I$(sysfsdir) -I.
 
 OBJS = main.o
 CRT0 = ../../klibc/klibc/crt0.o
@@ -32,7 +32,7 @@ SUBDIRS = libdevmapper
 
 recurse:
 	@for dir in $(SUBDIRS); do\
-	$(MAKE) -C $$dir ; \
+	$(MAKE) KERNEL_DIR=$(KERNEL_DIR) -C $$dir ; \
 	done
 	$(MAKE) $(EXEC)
 
diff --git a/extras/multipath/libdevmapper/Makefile b/extras/multipath/libdevmapper/Makefile
index b16007541..a05a31e85 100644
--- a/extras/multipath/libdevmapper/Makefile
+++ b/extras/multipath/libdevmapper/Makefile
@@ -10,7 +10,7 @@ CC = gcc
 GCCINCDIR := ${shell $(CC) -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp"}
 CFLAGS = -pipe -g -O2 -Wall -Wunused -Wstrict-prototypes -nostdinc \
          -I$(klibcdir)/klibc/include -I$(klibcdir)/klibc/include/bits32 \
-         -I$(GCCINCDIR) -I$(klibcdir)/linux/include -I. -Iioctl
+         -I$(GCCINCDIR) -I$(KERNEL_DIR)/include -I. -Iioctl
 
 OBJS = ioctl/libdevmapper.o libdm-common.o
 
diff --git a/klibc/MCONFIG b/klibc/MCONFIG
index ed7755b38..8b5da4154 100644
--- a/klibc/MCONFIG
+++ b/klibc/MCONFIG
@@ -12,7 +12,7 @@ REQFLAGS = $(ARCHREQFLAGS) -nostdinc -iwithprefix include -I$(KLIBSRC) \
 	  -I$(KLIBSRC)/arch/$(ARCH)/include \
 	  -I$(KLIBSRC)/include/bits$(BITSIZE) \
 	  -D__KLIBC__ -DBITSIZE=$(BITSIZE) -I$(KLIBSRC)/include \
-	  -I$(SRCROOT)/linux/include
+	  -I$(KERNEL_DIR)/include
 LDFLAGS =
 AR      = $(CROSS)ar
 RANLIB  = $(CROSS)ranlib
-- 
2.30.2