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

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

Documentation/kbuild/makefiles.txt

@@ -6,7 +6,7 @@ This document describes the Linux kernel Makefiles.
 
 	=== 1 Overview
 	=== 2 Who does what
-	=== 3 The kbuild Makefiles
+	=== 3 The kbuild files
 	   --- 3.1 Goal definitions
 	   --- 3.2 Built-in object goals - obj-y
 	   --- 3.3 Loadable module goals - obj-m
@@ -101,11 +101,14 @@ These people need to know about all aspects of the kernel Makefiles.
 This document is aimed towards normal developers and arch developers.
 
 
-=== 3 The kbuild Makefiles
+=== 3 The kbuild files
 
 Most Makefiles within the kernel are kbuild Makefiles that use the
 kbuild infrastructure. This chapter introduce the syntax used in the
 kbuild makefiles.
+The preferred name for the kbuild files is 'Kbuild' but 'Makefile' will
+continue to be supported. All new developmen is expected to use the
+Kbuild filename.
 
 Section 3.1 "Goal definitions" is a quick intro, further chapters provide
 more details, with real examples.
@@ -707,15 +710,17 @@ When kbuild executes the following steps are followed (roughly):
 	probe supported options:
 
 		#arch/i386/Makefile
-		check_gcc = $(shell if $(CC) $(1) -S -o /dev/null -xc \
-		            /dev/null\ > /dev/null 2>&1; then echo "$(1)"; \
-		            else echo "$(2)"; fi)
-		cflags-$(CONFIG_MCYRIXIII) += $(call check_gcc,\
-		                                     -march=c3,-march=i486)
 
-		CFLAGS += $(cflags-y)
+		...
+		cflags-$(CONFIG_MPENTIUMII)     += $(call cc-option,\
+						-march=pentium2,-march=i686)
+		...
+		# Disable unit-at-a-time mode ...
+		CFLAGS += $(call cc-option,-fno-unit-at-a-time)
+		...
+
 
-	The above examples both utilise the trick that a config option expands
+	The first examples utilises the trick that a config option expands
 	to 'y' when selected.
 
     CFLAGS_KERNEL	$(CC) options specific for built-in

Makefile

@@ -156,7 +156,7 @@ localversion-files := $(wildcard $(objtree)/localversion* $(srctree)/localversio
 endif
 
 LOCALVERSION = $(subst $(space),, \
-	       $(shell cat /dev/null $(localversion-files)) \
+	       $(shell cat /dev/null $(localversion-files:%~=)) \
 	       $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
 
 KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)$(LOCALVERSION)
@@ -440,6 +440,12 @@ ifeq ($(config-targets),1)
 # *config targets only - make sure prerequisites are updated, and descend
 # in scripts/kconfig to make the *config target
 
+# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
+# KBUILD_DEFCONFIG may point out an alternative default configuration
+# used for 'make defconfig'
+include $(srctree)/arch/$(ARCH)/Makefile
+export KBUILD_DEFCONFIG
+
 config: scripts_basic outputmakefile FORCE
 	$(Q)$(MAKE) $(build)=scripts/kconfig $@
 %config: scripts_basic outputmakefile FORCE

arch/arm/Makefile

@@ -13,6 +13,10 @@ OBJCOPYFLAGS	:=-O binary -R .note -R .comment -S
 GZFLAGS		:=-9
 #CFLAGS		+=-pipe
 
+# Do not use arch/arm/defconfig - it's always outdated.
+# Select a platform tht is kept up-to-date
+KBUILD_DEFCONFIG := versatile_defconfig
+
 ifeq ($(CONFIG_FRAME_POINTER),y)
 CFLAGS		+=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
 endif

arch/i386/kernel/process.c

@@ -28,7 +28,7 @@
 #include <linux/a.out.h>
 #include <linux/interrupt.h>
 #include <linux/config.h>
-#include <linux/version.h>
+#include <linux/utsname.h>
 #include <linux/delay.h>
 #include <linux/reboot.h>
 #include <linux/init.h>
@@ -230,7 +230,8 @@ void show_regs(struct pt_regs * regs)
 
 	if (regs->xcs & 3)
 		printk(" ESP: %04x:%08lx",0xffff & regs->xss,regs->esp);
-	printk(" EFLAGS: %08lx    %s  (%s)\n",regs->eflags, print_tainted(),UTS_RELEASE);
+	printk(" EFLAGS: %08lx    %s  (%s)\n",
+	       regs->eflags, print_tainted(), system_utsname.release);
 	printk("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
 		regs->eax,regs->ebx,regs->ecx,regs->edx);
 	printk("ESI: %08lx EDI: %08lx EBP: %08lx",

arch/i386/kernel/traps.c

@@ -25,7 +25,7 @@
 #include <linux/highmem.h>
 #include <linux/kallsyms.h>
 #include <linux/ptrace.h>
-#include <linux/version.h>
+#include <linux/utsname.h>
 #include <linux/kprobes.h>
 
 #ifdef CONFIG_EISA
@@ -218,7 +218,7 @@ void show_registers(struct pt_regs *regs)
 	printk("CPU:    %d\nEIP:    %04x:[<%08lx>]    %s VLI\nEFLAGS: %08lx"
 			"   (%s) \n",
 		smp_processor_id(), 0xffff & regs->xcs, regs->eip,
-		print_tainted(), regs->eflags, UTS_RELEASE);
+		print_tainted(), regs->eflags, system_utsname.release);
 	print_symbol("EIP is at %s\n", regs->eip);
 	printk("eax: %08lx   ebx: %08lx   ecx: %08lx   edx: %08lx\n",
 		regs->eax, regs->ebx, regs->ecx, regs->edx);

arch/m32r/Makefile

@@ -5,7 +5,6 @@
 LDFLAGS		:=
 OBJCOPYFLAGS	:= -O binary -R .note -R .comment -S
 LDFLAGS_vmlinux	:= -e startup_32
-LDFLAGS_BLOB	:= --format binary --oformat elf32-m32r
 
 CFLAGS += -pipe -fno-schedule-insns
 CFLAGS_KERNEL += -mmodel=medium

arch/m32r/boot/compressed/Makefile

@@ -28,9 +28,6 @@ $(obj)/vmlinux.bin: vmlinux FORCE
 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
 	$(call if_changed,gzip)
 
-$(obj)/vmlinux.lds: $(obj)/vmlinux.lds.S FORCE
-	$(CPP) $(EXTRA_AFLAGS) -C -P -I include $< >$@
-
 LDFLAGS_piggy.o := -r --format binary --oformat elf32-m32r-linux -T
 OBJCOPYFLAGS += -R .empty_zero_page
 

arch/ppc/boot/lib/Makefile

@@ -2,9 +2,22 @@
 # Makefile for some libs needed by zImage.
 #
 
-CFLAGS_kbd.o	+= -Idrivers/char
+CFLAGS_kbd.o	:= -Idrivers/char
+CFLAGS_vreset.o := -I$(srctree)/arch/ppc/boot/include
 
-lib-y := $(addprefix ../../../../lib/zlib_inflate/, \
-           infblock.o infcodes.o inffast.o inflate.o inftrees.o infutil.o)
-lib-y += div64.o
+zlib  := infblock.c infcodes.c inffast.c inflate.c inftrees.c infutil.c
+	 
+lib-y += $(zlib:.c=.o) div64.o
 lib-$(CONFIG_VGA_CONSOLE) += vreset.o kbd.o
+
+
+# zlib files needs header from their original place
+EXTRA_CFLAGS += -Ilib/zlib_inflate
+
+quiet_cmd_copy_zlib = COPY    $@
+      cmd_copy_zlib = cat $< > $@
+
+$(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
+	$(call cmd,copy_zlib)
+
+clean-files := $(zlib)

arch/ppc64/boot/Makefile

@@ -118,6 +118,6 @@ $(obj)/imagesize.c: vmlinux.strip
 		>> $(obj)/imagesize.c
 
 install: $(CONFIGURE) $(obj)/$(BOOTIMAGE)
-	sh -x $(src)/install.sh "$(KERNELRELEASE)" "$(obj)/$(BOOTIMAGE)" "$(INSTALL_PATH)"
+	sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" "$(obj)/$(BOOTIMAGE)" "$(INSTALL_PATH)"
 
 clean-files := $(addprefix $(objtree)/, $(obj-boot) vmlinux.strip)

arch/sparc/Kconfig

@@ -86,8 +86,8 @@ config SMP
 	depends on BROKEN
 	---help---
 	  This enables support for systems with more than one CPU. If you have
-	  a system with only one CPU, like most personal computers, say N. If
-	  you have a system with more than one CPU, say Y.
+	  a system with only one CPU, say N. If you have a system with more
+	  than one CPU, say Y.
 
 	  If you say N here, the kernel will run on single and multiprocessor
 	  machines, but will use only one CPU of a multiprocessor machine. If
@@ -95,17 +95,11 @@ config SMP
 	  singleprocessor machines. On a singleprocessor machine, the kernel
 	  will run faster if you say N here.
 
-	  Note that if you say Y here and choose architecture "586" or
-	  "Pentium" under "Processor family", the kernel will not work on 486
-	  architectures. Similarly, multiprocessor kernels for the "PPro"
-	  architecture may not work on all Pentium based boards.
-
 	  People using multiprocessor machines who say Y here should also say
 	  Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 	  Management" code will be disabled if you say Y here.
 
 	  See also the <file:Documentation/smp.txt>,
-	  <file:Documentation/i386/IO-APIC.txt>,
 	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 	  <http://www.tldp.org/docs.html#howto>.
 
@@ -189,10 +183,10 @@ config SERIAL_CONSOLE
 	  (/dev/tty0) will still be used as the system console by default, but
 	  you can alter that using a kernel command line option such as
 	  "console=ttyS1". (Try "man bootparam" or see the documentation of
-	  your boot loader (lilo or loadlin) about how to pass options to the
-	  kernel at boot time.)
+	  your boot loader (silo) about how to pass options to the kernel at
+	  boot time.)
 
-	  If you don't have a VGA card installed and you say Y here, the
+	  If you don't have a graphics card installed and you say Y here, the
 	  kernel will automatically use the first serial line, /dev/ttyS0, as
 	  system console.
 
@@ -223,6 +217,7 @@ config SUN_PM
 config SUN4
 	bool "Support for SUN4 machines (disables SUN4[CDM] support)"
 	depends on !SMP
+	default n
 	help
 	  Say Y here if, and only if, your machine is a sun4. Note that
 	  a kernel compiled with this option will run only on sun4.
@@ -249,7 +244,10 @@ config SUN_OPENPROMFS
 	  -t openpromfs none /proc/openprom".
 
 	  To compile the /proc/openprom support as a module, choose M here: the
-	  module will be called openpromfs.  If unsure, choose M.
+	  module will be called openpromfs.
+
+	  Only choose N if you know in advance that you will not need to modify
+	  OpenPROM settings on the running system.
 
 source "fs/Kconfig.binfmt"
 
@@ -282,9 +280,9 @@ config PRINTER
 
 	  If you have several parallel ports, you can specify which ports to
 	  use with the "lp" kernel command line option.  (Try "man bootparam"
-	  or see the documentation of your boot loader (lilo or loadlin) about
-	  how to pass options to the kernel at boot time.)  The syntax of the
-	  "lp" command line option can be found in <file:drivers/char/lp.c>.
+	  or see the documentation of your boot loader (silo) about how to pass
+	  options to the kernel at boot time.)  The syntax of the "lp" command
+	  line option can be found in <file:drivers/char/lp.c>.
 
 	  If you have more than 8 printers, you need to increase the LP_NO
 	  macro in lp.c and the PARPORT_MAX macro in parport.h.

scripts/Makefile.build

@@ -10,7 +10,7 @@ __build:
 # Read .config if it exist, otherwise ignore
 -include .config
 
-include $(obj)/Makefile
+include $(if $(wildcard $(obj)/Kbuild), $(obj)/Kbuild, $(obj)/Makefile)
 
 include scripts/Makefile.lib
 

scripts/Makefile.clean

@@ -7,7 +7,7 @@ src := $(obj)
 .PHONY: __clean
 __clean:
 
-include $(obj)/Makefile
+include $(if $(wildcard $(obj)/Kbuild), $(obj)/Kbuild, $(obj)/Makefile)
 
 # Figure out what we need to build from the various variables
 # ==========================================================================

scripts/basic/fixdep.c

@@ -225,10 +225,10 @@ void parse_config_file(signed char *map, size_t len)
 	signed char *p, *q;
 
 	for (; m < end; m++) {
-		if (*m == INT_CONF) { p = (char *) m  ; goto conf; }
-		if (*m == INT_ONFI) { p = (char *) m-1; goto conf; }
-		if (*m == INT_NFIG) { p = (char *) m-2; goto conf; }
-		if (*m == INT_FIG_) { p = (char *) m-3; goto conf; }
+		if (*m == INT_CONF) { p = (signed char *) m  ; goto conf; }
+		if (*m == INT_ONFI) { p = (signed char *) m-1; goto conf; }
+		if (*m == INT_NFIG) { p = (signed char *) m-2; goto conf; }
+		if (*m == INT_FIG_) { p = (signed char *) m-3; goto conf; }
 		continue;
 	conf:
 		if (p > map + len - 7)

scripts/gen_initramfs_list.sh

@@ -37,6 +37,18 @@ filetype() {
 	return 0
 }
 
+print_mtime() {
+	local argv1="$1"
+	local my_mtime="0"
+
+	if [ -e "${argv1}" ]; then
+		my_mtime=$(find "${argv1}" -printf "%T@\n" | sort -r | head -n 1)
+	fi
+	
+	echo "# Last modified: ${my_mtime}"
+	echo
+}
+
 parse() {
 	local location="$1"
 	local name="${location/${srcdir}//}"
@@ -77,16 +89,19 @@ parse() {
 	return 0
 }
 
-if [ -z $1 ]; then
+if [ -z "$1" ]; then
 	simple_initramfs
-elif [ -f $1 ]; then
-	cat $1
-elif [ -d $1 ]; then
+elif [ -f "$1" ]; then
+	print_mtime "$1"
+	cat "$1"
+elif [ -d "$1" ]; then
 	srcdir=$(echo "$1" | sed -e 's://*:/:g')
 	dirlist=$(find "${srcdir}" -printf "%p %m %U %G\n" 2>/dev/null)
 
 	# If $dirlist is only one line, then the directory is empty
 	if [  "$(echo "${dirlist}" | wc -l)" -gt 1 ]; then
+		print_mtime "$1"
+		
 		echo "${dirlist}" | \
 		while read x; do
 			parse ${x}

scripts/kallsyms.c

@@ -132,7 +132,17 @@ read_symbol(FILE *in, struct sym_entry *s)
 		_sinittext = s->addr;
 	else if (strcmp(str, "_einittext") == 0)
 		_einittext = s->addr;
-	else if (toupper(s->type) == 'A' || toupper(s->type) == 'U' ||
+	else if (toupper(s->type) == 'A')
+	{
+		/* Keep these useful absolute symbols */
+		if (strcmp(str, "__kernel_syscall_via_break") &&
+		    strcmp(str, "__kernel_syscall_via_epc") &&
+		    strcmp(str, "__kernel_sigtramp") &&
+		    strcmp(str, "__gp"))
+			return -1;
+
+	}
+	else if (toupper(s->type) == 'U' ||
 		 is_arm_mapping_symbol(str))
 		return -1;
 

scripts/kconfig/Makefile

@@ -38,7 +38,12 @@ allmodconfig: $(obj)/conf
 	$< -m arch/$(ARCH)/Kconfig
 
 defconfig: $(obj)/conf
+ifeq ($(KBUILD_DEFCONFIG),)
 	$< -d arch/$(ARCH)/Kconfig
+else
+	@echo *** Default configuration is based on '$(KBUILD_DEFCONFIG)'
+	$(Q)$< -D arch/$(ARCH)/configs/$(KBUILD_DEFCONFIG) arch/$(ARCH)/Kconfig
+endif
 
 %_defconfig: $(obj)/conf
 	$(Q)$< -D arch/$(ARCH)/configs/$@ arch/$(ARCH)/Kconfig
@@ -65,11 +70,9 @@ help:
 #         Based on GTK which needs to be installed to compile it
 # object files used by all kconfig flavours
 
-libkconfig-objs := zconf.tab.o
-
 hostprogs-y	:= conf mconf qconf gconf
-conf-objs	:= conf.o  libkconfig.so
-mconf-objs	:= mconf.o libkconfig.so
+conf-objs	:= conf.o  zconf.tab.o
+mconf-objs	:= mconf.o zconf.tab.o
 
 ifeq ($(MAKECMDGOALS),xconfig)
 	qconf-target := 1
@@ -81,14 +84,14 @@ endif
 
 ifeq ($(qconf-target),1)
 qconf-cxxobjs	:= qconf.o
-qconf-objs	:= kconfig_load.o
+qconf-objs	:= kconfig_load.o zconf.tab.o
 endif
 
 ifeq ($(gconf-target),1)
-gconf-objs	:= gconf.o kconfig_load.o
+gconf-objs	:= gconf.o kconfig_load.o zconf.tab.o
 endif
 
-clean-files	:= libkconfig.so lkc_defs.h qconf.moc .tmp_qtcheck \
+clean-files	:= lkc_defs.h qconf.moc .tmp_qtcheck \
 		   .tmp_gtkcheck zconf.tab.c zconf.tab.h lex.zconf.c
 
 # generated files seem to need this to find local include files
@@ -96,10 +99,11 @@ HOSTCFLAGS_lex.zconf.o	:= -I$(src)
 HOSTCFLAGS_zconf.tab.o	:= -I$(src)
 
 HOSTLOADLIBES_qconf	= -L$(QTLIBPATH) -Wl,-rpath,$(QTLIBPATH) -l$(QTLIB) -ldl
-HOSTCXXFLAGS_qconf.o	= -I$(QTDIR)/include 
+HOSTCXXFLAGS_qconf.o	= -I$(QTDIR)/include -D LKC_DIRECT_LINK
 
 HOSTLOADLIBES_gconf	= `pkg-config gtk+-2.0 gmodule-2.0 libglade-2.0 --libs`
-HOSTCFLAGS_gconf.o	= `pkg-config gtk+-2.0 gmodule-2.0 libglade-2.0 --cflags`
+HOSTCFLAGS_gconf.o	= `pkg-config gtk+-2.0 gmodule-2.0 libglade-2.0 --cflags` \
+                          -D LKC_DIRECT_LINK
 
 $(obj)/conf.o $(obj)/mconf.o $(obj)/qconf.o $(obj)/gconf.o: $(obj)/zconf.tab.h
 

scripts/lxdialog/Makefile

 HOST_EXTRACFLAGS := -DLOCALE 
+ifeq ($(shell uname),SunOS)
+HOST_LOADLIBES   := -lcurses
+else
 HOST_LOADLIBES   := -lncurses
+endif
 
 ifeq (/usr/include/ncurses/ncurses.h, $(wildcard /usr/include/ncurses/ncurses.h))
         HOST_EXTRACFLAGS += -I/usr/include/ncurses -DCURSES_LOC="<ncurses.h>"

scripts/lxdialog/dialog.h

@@ -26,6 +26,9 @@
 #include <stdlib.h>
 #include <string.h>
 
+#ifdef __sun__
+#define CURS_MACROS
+#endif
 #include CURSES_LOC
 
 /*

scripts/mod/modpost.c

@@ -219,7 +219,7 @@ get_next_line(unsigned long *pos, void *file, unsigned long size)
 	static char line[4096];
 	int skip = 1;
 	size_t len = 0;
-	signed char *p = (char *)file + *pos;
+	signed char *p = (signed char *)file + *pos;
 	char *s = line;
 
 	for (; *pos < size ; (*pos)++)

sound/core/info.c

@@ -25,10 +25,13 @@
 #include <linux/vmalloc.h>
 #include <linux/time.h>
 #include <linux/smp_lock.h>
+#include <linux/utsname.h>
+#include <linux/config.h>
+
 #include <sound/core.h>
+#include <sound/version.h>
 #include <sound/minors.h>
 #include <sound/info.h>
-#include <sound/version.h>
 #include <linux/proc_fs.h>
 #include <linux/devfs_fs_kernel.h>
 #include <stdarg.h>
@@ -959,7 +962,7 @@ static snd_info_entry_t *snd_info_version_entry = NULL;
 
 static void snd_info_version_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
 {
-	static char *kernel_version = UTS_RELEASE;
+	static char *kernel_version = system_utsname.release;
 
 	snd_iprintf(buffer,
 		    "Advanced Linux Sound Architecture Driver Version " CONFIG_SND_VERSION CONFIG_SND_DATE ".\n"