Merge bk://linux-sam.bkbits.net/kbuild

into ppc970.osdl.org:/home/torvalds/v2.6/linux

Documentation/kbuild/modules.txt

@@ -23,7 +23,7 @@ with changes in the build system the most portable way to compile a
 module outside the kernel is to use the kernel build system,
 kbuild. Use the following command-line:
 
-make -C path/to/kernel/src SUBDIRS=$PWD modules
+make -C path/to/kernel/src M=$PWD modules
 
 This requires that a makefile exits made in accordance to
 Documentation/kbuild/makefiles.txt. Read that file for more details on
@@ -65,4 +65,4 @@ yourmodule-objs := file1.o file2.o file3.o
 # Invokes the kernel build system to come back to the current
 # directory and build yourmodule.ko.
 default:
-	make -C ${KERNEL_SOURCE} SUBDIRS=`pwd` modules
+	make -C ${KERNEL_SOURCE} M=`pwd` modules

Makefile

@@ -53,7 +53,7 @@ ifndef KBUILD_CHECKSRC
   KBUILD_CHECKSRC = 0
 endif
 
-# Use make M=dir to specify direcotry of external module to build
+# Use make M=dir to specify directory of external module to build
 # Old syntax make ... SUBDIRS=$PWD is still supported
 # Setting the environment variable KBUILD_EXTMOD take precedence
 ifdef SUBDIRS
@@ -130,16 +130,6 @@ else
 _all: modules
 endif
 
-# Make sure we're not wasting cpu-cycles doing locale handling, yet do make
-# sure error messages appear in the user-desired language
-ifdef LC_ALL
-LANG := $(LC_ALL)
-LC_ALL :=
-endif
-LC_COLLATE := C
-LC_CTYPE := C
-export LANG LC_ALL LC_COLLATE LC_CTYPE
-
 srctree		:= $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
 TOPDIR		:= $(srctree)
 # FIXME - TOPDIR is obsolete, use srctree/objtree
@@ -621,25 +611,44 @@ vmlinux: $(vmlinux-objs) $(kallsyms.o) arch/$(ARCH)/kernel/vmlinux.lds.s FORCE
 
 $(sort $(vmlinux-objs)) arch/$(ARCH)/kernel/vmlinux.lds.s: $(vmlinux-dirs) ;
 
-# 	Handle descending into subdirectories listed in $(vmlinux-dirs)
+# Handle descending into subdirectories listed in $(vmlinux-dirs)
+# Preset locale variables to speed up the build process. Limit locale
+# tweaks to this spot to avoid wrong language settings when running
+# make menuconfig etc.
+# Error messages still appears in the original language
 
 .PHONY: $(vmlinux-dirs)
 $(vmlinux-dirs): prepare-all scripts
-	$(Q)$(MAKE) $(build)=$@
+	$(Q)if [ ! -z $$LC_ALL ]; then          \
+		export LANG=$$LC_ALL;           \
+		export LC_ALL= ;                \
+	fi;                                     \
+	export LC_COLLATE=C; export LC_CTYPE=C; \
+	$(MAKE) $(build)=$@
 
 # Things we need to do before we recursively start building the kernel
 # or the modules are listed in "prepare-all".
 # A multi level approach is used. prepare1 is updated first, then prepare0.
 # prepare-all is the collection point for the prepare targets.
 
-.PHONY: prepare-all prepare prepare0 prepare1
+.PHONY: prepare-all prepare prepare0 prepare1 prepare2
+
+# prepare 2 generate Makefile to be placed in output directory, if
+# using a seperate output directory. This allows convinient use
+# of make in output directory
+prepare2:
+	$(Q)if [ ! $(srctree) -ef $(objtree) ]; then       \
+	$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile      \
+	    $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) \
+	    > $(objtree)/Makefile;                         \
+	fi
 
 # prepare1 is used to check if we are building in a separate output directory,
 # and if so do:
 # 1) Check that make has not been executed in the kernel src $(srctree)
 # 2) Create the include2 directory, used for the second asm symlink
 
-prepare1:
+prepare1: prepare2
 ifneq ($(KBUILD_SRC),)
 	@echo '  Using $(srctree) as source for kernel'
 	$(Q)if [ -h $(srctree)/include/asm -o -f $(srctree)/.config ]; then \
@@ -760,9 +769,13 @@ _modinst_:
 		sleep 1; \
 	fi
 	@rm -rf $(MODLIB)/kernel
-	@rm -f $(MODLIB)/build
+	@rm -f $(MODLIB)/source
 	@mkdir -p $(MODLIB)/kernel
-	@ln -s $(TOPDIR) $(MODLIB)/build
+	@ln -s $(srctree) $(MODLIB)/source
+	@if [ ! $(objtree) -ef  $(MODLIB)/build ]; then \
+		rm -f $(MODLIB)/build ; \
+		ln -s $(objtree) $(MODLIB)/build ; \
+	fi
 	$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
 
 # If System.map exists, run depmod.  This deliberately does not have a
@@ -1009,19 +1022,19 @@ endif # KBUILD_EXTMOD
 # ---------------------------------------------------------------------------
 
 define all-sources
-	( find . $(RCS_FIND_IGNORE) \
+	( find $(srctree) $(RCS_FIND_IGNORE) \
 	       \( -name include -o -name arch \) -prune -o \
 	       -name '*.[chS]' -print; \
-	  find arch/$(ARCH) $(RCS_FIND_IGNORE) \
+	  find $(srctree)/arch/$(ARCH) $(RCS_FIND_IGNORE) \
 	       -name '*.[chS]' -print; \
-	  find security/selinux/include $(RCS_FIND_IGNORE) \
+	  find $(srctree)/security/selinux/include $(RCS_FIND_IGNORE) \
 	       -name '*.[chS]' -print; \
-	  find include $(RCS_FIND_IGNORE) \
+	  find $(srctree)/include $(RCS_FIND_IGNORE) \
 	       \( -name config -o -name 'asm-*' \) -prune \
 	       -o -name '*.[chS]' -print; \
-	  find include/asm-$(ARCH) $(RCS_FIND_IGNORE) \
+	  find $(srctree)/include/asm-$(ARCH) $(RCS_FIND_IGNORE) \
 	       -name '*.[chS]' -print; \
-	  find include/asm-generic $(RCS_FIND_IGNORE) \
+	  find $(srctree)/include/asm-generic $(RCS_FIND_IGNORE) \
 	       -name '*.[chS]' -print )
 endef
 

drivers/base/Kconfig

 menu "Generic Driver Options"
 
+config STANDALONE
+	bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL
+	default y
+	help
+	  Select this option if you don't have magic firmware for drivers that
+	  need it.
+
+	  If unsure, say Y.
+
 config PREVENT_FIRMWARE_BUILD
 	bool "Prevent firmware from being built"
 	default y

init/Kconfig

@@ -41,15 +41,6 @@ config CLEAN_COMPILE
 
 	  If unsure, say Y
 
-config STANDALONE
-	bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL
-	default y
-	help
-	  Select this option if you don't have magic firmware for drivers that
-	  need it.
-
-	  If unsure, say Y.
-
 config BROKEN
 	bool
 	depends on !CLEAN_COMPILE

scripts/Makefile

@@ -5,24 +5,11 @@
 # docproc: 	 Preprocess .tmpl file in order to generate .sgml docs
 # conmakehash:	 Create arrays for initializing the kernel console tables
 
-host-progs	:= conmakehash kallsyms modpost mk_elfconfig pnmtologo bin2c
-always		:= $(host-progs) empty.o
-
-modpost-objs	:= modpost.o file2alias.o sumversion.o
+host-progs	:= conmakehash kallsyms pnmtologo bin2c
+always		:= $(host-progs)
 
 subdir-$(CONFIG_MODVERSIONS)	+= genksyms
+subdir-y	+= mod
 
 # Let clean descend into subdirs
 subdir-	+= basic lxdialog kconfig package
-
-# dependencies on generated files need to be listed explicitly
-
-$(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o: $(obj)/elfconfig.h
-
-quiet_cmd_elfconfig = MKELF   $@
-      cmd_elfconfig = $(obj)/mk_elfconfig $(ARCH) < $< > $@
-
-$(obj)/elfconfig.h: $(obj)/empty.o $(obj)/mk_elfconfig FORCE
-	$(call if_changed,elfconfig)
-
-targets += elfconfig.h

scripts/Makefile.modpost

@@ -50,7 +50,7 @@ _modpost: $(modules)
 # Step 2), invoke modpost
 #  Includes step 3,4
 quiet_cmd_modpost = MODPOST
-      cmd_modpost = scripts/modpost \
+      cmd_modpost = scripts/mod/modpost \
 	$(if $(KBUILD_EXTMOD),-i,-o) $(symverfile) \
 	$(filter-out FORCE,$^)
 

scripts/mkmakefile

+#!/bin/sh
+# Generates a small Makefile used in the root of the output
+# directory, to allow make to be started from there.
+# The Makefile also allow for more convinient build of external modules
+
+# Usage
+# $1 - Kernel src directory
+# $2 - Output directory
+# $3 - version
+# $4 - patchlevel
+
+
+cat << EOF
+# Automatically generated by $0: don't edit
+
+VERSION = $3
+PATCHLEVEL = $4
+
+KERNELSRC    := $1
+KERNELOUTPUT := $2
+
+MAKEFLAGS += --no-print-directory
+
+all:
+	\$(MAKE) -C \$(KERNELSRC) O=\$(KERNELOUTPUT)
+
+%::
+	\$(MAKE) -C \$(KERNELSRC) O=\$(KERNELOUTPUT) \$@
+
+EOF
+

scripts/mod/Makefile

+host-progs	:= modpost mk_elfconfig
+always		:= $(host-progs) empty.o
+
+modpost-objs	:= modpost.o file2alias.o sumversion.o
+
+# dependencies on generated files need to be listed explicitly
+
+$(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o: $(obj)/elfconfig.h
+
+quiet_cmd_elfconfig = MKELF   $@
+      cmd_elfconfig = $(obj)/mk_elfconfig $(ARCH) < $< > $@
+
+$(obj)/elfconfig.h: $(obj)/empty.o $(obj)/mk_elfconfig FORCE
+	$(call if_changed,elfconfig)
+
+targets += elfconfig.h

scripts/file2alias.c → scripts/mod/file2alias.c

@@ -27,7 +27,7 @@ typedef unsigned char  __u8;
 /* Big exception to the "don't include kernel headers into userspace, which
  * even potentially has different endianness and word sizes, since 
  * we handle those differences explicitly below */
-#include "../include/linux/mod_devicetable.h"
+#include "../../include/linux/mod_devicetable.h"
 
 #define ADD(str, sep, cond, field)                              \
 do {                                                            \

scripts/package/Makefile

@@ -31,9 +31,10 @@ KERNELPATH := kernel-$(subst -,,$(KERNELRELEASE))
 MKSPEC     := $(srctree)/scripts/package/mkspec
 PREV       := set -e; cd ..;
 
+# rpm-pkg
 .PHONY: rpm-pkg rpm
 
-$(objtree)/kernel.spec: $(MKSPEC)
+$(objtree)/kernel.spec: $(MKSPEC) $(srctree)/Makefile
 	$(CONFIG_SHELL) $(MKSPEC) > $@
 
 rpm-pkg rpm: $(objtree)/kernel.spec
@@ -52,6 +53,22 @@ rpm-pkg rpm: $(objtree)/kernel.spec
 
 clean-rule +=  rm -f $(objtree)/kernel.spec
 
+# binrpm-pkg
+.PHONY: binrpm-pkg
+$(objtree)/binkernel.spec: $(MKSPEC) $(srctree)/Makefile
+	$(CONFIG_SHELL) $(MKSPEC) prebuilt > $@
+	
+binrpm-pkg: $(objtree)/binkernel.spec
+	$(MAKE)
+	set -e; \
+	$(CONFIG_SHELL) $(srctree)/scripts/mkversion > $(objtree)/.tmp_version
+	set -e; \
+	mv -f $(objtree)/.tmp_version $(objtree)/.version
+
+	$(RPM) --define "_builddir $(srctree)" --target $(UTS_MACHINE) -bb $<
+
+clean-rule += rm -f $(objtree)/binkernel.spec
+
 # Deb target
 # ---------------------------------------------------------------------------
 #
@@ -67,5 +84,6 @@ clean-rule += && rm -rf $(objtree)/debian/
 # ---------------------------------------------------------------------------
 help:
 	@echo  '  rpm-pkg         - Build the kernel as an RPM package'
+	@echo  '  binrpm-pkg      - Build an rpm package containing the compiled kernel & modules'
 	@echo  '  deb-pkg         - Build the kernel as an deb package'
 

scripts/package/mkspec

@@ -9,6 +9,13 @@
 #	Patched for non-x86 by Opencon (L) 2002 <opencon@rio.skydome.net>
 #
 
+# how we were called determines which rpms we build and how we build them
+if [ "$1" = "prebuilt" ]; then
+	PREBUILT=true
+else
+	PREBUILT=false
+fi
+
 # starting to output the spec
 if [ "`grep CONFIG_DRM=y .config | cut -f2 -d\=`" = "y" ]; then
 	PROVIDES=kernel-drm
@@ -26,8 +33,12 @@ echo "License: GPL"
 echo "Group: System Environment/Kernel"
 echo "Vendor: The Linux Community"
 echo "URL: http://www.kernel.org"
+
+if ! $PREBUILT; then
 echo -n "Source: kernel-$VERSION.$PATCHLEVEL.$SUBLEVEL"
 echo "$EXTRAVERSION.tar.gz" | sed -e "s/-//g"
+fi
+
 echo "BuildRoot: /var/tmp/%{name}-%{PACKAGE_VERSION}-root"
 echo "Provides: $PROVIDES"
 echo "%define __spec_install_post /usr/lib/rpm/brp-compress || :"
@@ -36,12 +47,20 @@ echo ""
 echo "%description"
 echo "The Linux Kernel, the operating system core itself"
 echo ""
+
+if ! $PREBUILT; then
 echo "%prep"
 echo "%setup -q"
 echo ""
+fi
+
 echo "%build"
+
+if ! $PREBUILT; then
 echo "make clean && make"
 echo ""
+fi
+
 echo "%install"
 echo 'mkdir -p $RPM_BUILD_ROOT/boot $RPM_BUILD_ROOT/lib $RPM_BUILD_ROOT/lib/modules'