[patch] allow builds of extras programs under udev

[Patrick Mansfield <patmans@us.ibm.com>]

This patch against udev (bitkeeper version as of sometime Dec 4) enables
the building of the "extras" programs using the same build environment as
udev (i.e. build with udev's versions of klibc and sysfsutils).

It does not pass down clean, install, or uninstall targets to the extras
programs.

The current scsi_id under udev won't build with this patch, use the
scsi_id 0.2 I just posted.

Build scsi_id and udev via:

	make EXTRAS=extras/scsi_id

Build scsi_id and udev with klibc via:

	make KLIBC=true EXTRAS=extras/scsi_id

=== Makefile 1.47 vs edited ==--- 1.47/Makefile	Thu Dec  4 11:21:04 2003
+++ edited/Makefile	Fri Dec  5 15:30:28 2003
@@ -42,6 +42,9 @@
 INSTALL_DATA  = ${INSTALL} -m 644
 INSTALL_SCRIPT = ${INSTALL_PROGRAM}
 
+# To build any of the extras programs, run with:
+# 	make EXTRAS="extras/a extras/b" 
+EXTRAS 
 # place to put our device nodes
 udevdir = ${prefix}/udev/
@@ -62,6 +65,8 @@
 
 export CROSS CC AR STRIP RANLIB
 
+export CFLAGS LDFLAGS SYSFS LIB_OBJS ARCH_LIB_OBJS CRT0
+
 # code taken from uClibc to determine the current arch
 ARCH := ${shell $(CC) -dumpmachine | sed -e s'/-.*//' -e 's/i.86/i386/' -e 's/sparc.*/sparc/' \
 	-e 's/arm.*/arm/g' -e 's/m68k.*/m68k/' -e 's/powerpc/ppc/g'}
@@ -108,20 +113,20 @@
 # If we are using our version of klibc, then we need to build and link it.
 # Otherwise, use glibc and link statically.
 ifeq ($(strip $(KLIBC)),true)
-	KLIBC_DIR	= klibc/klibc
+	KLIBC_BASE	= $(PWD)/klibc
+	KLIBC_DIR	= $(KLIBC_BASE)/klibc
 	INCLUDE_DIR	:= $(KLIBC_DIR)/include
+	LINUX_INCLUDE_DIR	:= $(KLIBC_BASE)/linux/include
 	include $(KLIBC_DIR)/arch/$(ARCH)/MCONFIG
 	# arch specific objects
-	LIBGCC		= $(shell $(CC) --print-libgcc)
 	ARCH_LIB_OBJS =	\
-			$(KLIBC_DIR)/libc.a	\
-			$(LIBGCC)
+			$(KLIBC_DIR)/libc.a
 
 
 	CRT0 = $(KLIBC_DIR)/crt0.o
 	LIBC =	$(ARCH_LIB_OBJS) $(LIB_OBJS) $(CRT0)
 	CFLAGS += -nostdinc -I$(INCLUDE_DIR) -I$(KLIBC_DIR)/arch/$(ARCH)/include \
-		-I$(INCLUDE_DIR)/bits$(BITSIZE) -I$(GCCINCDIR) -Iklibc/linux/include \
+		-I$(INCLUDE_DIR)/bits$(BITSIZE) -I$(GCCINCDIR) -I$(LINUX_INCLUDE_DIR) \
 		-D__KLIBC__
 	LIB_OBJS  	LDFLAGS = --static --nostdlib -nostartfiles -nodefaultlibs
@@ -133,7 +138,15 @@
 	LDFLAGS = --static 
 endif
 
-all: $(ROOT)
+CFLAGS += -I$(PWD)/libsysfs
+
+
+all: $(ROOT) $(EXTRAS)
+
+FORCE:
+
+$(EXTRAS): $(ROOT) FORCE
+	$(MAKE) LD=$(LD) SYSFS="$(SYSFS)" -C $@
 
 $(ROOT): $(LIBC)
 
@@ -145,13 +158,13 @@
 TDB =	tdb/tdb.o	\
 	tdb/spinlock.o
 
-SYSFS =	libsysfs/sysfs_bus.o	\
-	libsysfs/sysfs_class.o	\
-	libsysfs/sysfs_device.o	\
-	libsysfs/sysfs_dir.o	\
-	libsysfs/sysfs_driver.o	\
-	libsysfs/sysfs_utils.o	\
-	libsysfs/dlist.o
+SYSFS =	$(PWD)/libsysfs/sysfs_bus.o	\
+	$(PWD)/libsysfs/sysfs_class.o	\
+	$(PWD)/libsysfs/sysfs_device.o	\
+	$(PWD)/libsysfs/sysfs_dir.o	\
+	$(PWD)/libsysfs/sysfs_driver.o	\
+	$(PWD)/libsysfs/sysfs_utils.o	\
+	$(PWD)/libsysfs/dlist.o
 
 OBJS =	udev.o		\
 	udev_config.o	\


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