Commit 2e1ca21d authored by Linus Torvalds's avatar Linus Torvalds

Merge master.kernel.org:/pub/scm/linux/kernel/git/sam/kbuild

* master.kernel.org:/pub/scm/linux/kernel/git/sam/kbuild: (46 commits)
  kbuild: remove obsoleted scripts/reference_* files
  kbuild: fix make help & make *pkg
  kconfig: fix time ordering of writes to .kconfig.d and include/linux/autoconf.h
  Kconfig: remove the CONFIG_CC_ALIGN_* options
  kbuild: add -fverbose-asm to i386 Makefile
  kbuild: clean-up genksyms
  kbuild: Lindent genksyms.c
  kbuild: fix genksyms build error
  kbuild: in makefile.txt note that Makefile is preferred name for kbuild files
  kbuild: replace PHONY with FORCE
  kbuild: Fix bug in crc symbol generating of kernel and modules
  kbuild: change kbuild to not rely on incorrect GNU make behavior
  kbuild: when warning symbols exported twice now tell user this is the problem
  kbuild: fix make dir/file.xx when asm symlink is missing
  kbuild: in the section mismatch check try harder to find symbols
  kbuild: fix section mismatch check for unwind on IA64
  kbuild: kill false positives from section mismatch warnings for powerpc
  kbuild: kill trailing whitespace in modpost & friends
  kbuild: small update of allnoconfig description
  kbuild: make namespace.pl CROSS_COMPILE happy
  ...

Trivial conflict in arch/ppc/boot/Makefile manually fixed up
parents 315ab19a eae0f536
......@@ -28,7 +28,7 @@ PS_METHOD = $(prefer-db2x)
###
# The targets that may be used.
.PHONY: xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs
PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs
BOOKS := $(addprefix $(obj)/,$(DOCBOOKS))
xmldocs: $(BOOKS)
......@@ -211,3 +211,9 @@ clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS))
#man put files in man subdir - traverse down
subdir- := man/
# Declare the contents of the .PHONY variable as phony. We keep that
# information in a variable se we can use it in if_changed and friends.
.PHONY: $(PHONY)
......@@ -17,6 +17,7 @@ This document describes the Linux kernel Makefiles.
--- 3.8 Command line dependency
--- 3.9 Dependency tracking
--- 3.10 Special Rules
--- 3.11 $(CC) support functions
=== 4 Host Program support
--- 4.1 Simple Host Program
......@@ -38,7 +39,6 @@ This document describes the Linux kernel Makefiles.
--- 6.6 Commands useful for building a boot image
--- 6.7 Custom kbuild commands
--- 6.8 Preprocessing linker scripts
--- 6.9 $(CC) support functions
=== 7 Kbuild Variables
=== 8 Makefile language
......@@ -106,9 +106,9 @@ This document is aimed towards normal developers and arch developers.
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.
The preferred name for the kbuild files are 'Makefile' but 'Kbuild' can
be used and if both a 'Makefile' and a 'Kbuild' file exists then the 'Kbuild'
file will be used.
Section 3.1 "Goal definitions" is a quick intro, further chapters provide
more details, with real examples.
......@@ -385,6 +385,102 @@ more details, with real examples.
to prerequisites are referenced with $(src) (because they are not
generated files).
--- 3.11 $(CC) support functions
The kernel may be build with several different versions of
$(CC), each supporting a unique set of features and options.
kbuild provide basic support to check for valid options for $(CC).
$(CC) is useally the gcc compiler, but other alternatives are
available.
as-option
as-option is used to check if $(CC) when used to compile
assembler (*.S) files supports the given option. An optional
second option may be specified if first option are not supported.
Example:
#arch/sh/Makefile
cflags-y += $(call as-option,-Wa$(comma)-isa=$(isa-y),)
In the above example cflags-y will be assinged the the option
-Wa$(comma)-isa=$(isa-y) if it is supported by $(CC).
The second argument is optional, and if supplied will be used
if first argument is not supported.
cc-option
cc-option is used to check if $(CC) support a given option, and not
supported to use an optional second option.
Example:
#arch/i386/Makefile
cflags-y += $(call cc-option,-march=pentium-mmx,-march=i586)
In the above example cflags-y will be assigned the option
-march=pentium-mmx if supported by $(CC), otherwise -march-i586.
The second argument to cc-option is optional, and if omitted
cflags-y will be assigned no value if first option is not supported.
cc-option-yn
cc-option-yn is used to check if gcc supports a given option
and return 'y' if supported, otherwise 'n'.
Example:
#arch/ppc/Makefile
biarch := $(call cc-option-yn, -m32)
aflags-$(biarch) += -a32
cflags-$(biarch) += -m32
In the above example $(biarch) is set to y if $(CC) supports the -m32
option. When $(biarch) equals to y the expanded variables $(aflags-y)
and $(cflags-y) will be assigned the values -a32 and -m32.
cc-option-align
gcc version >= 3.0 shifted type of options used to speify
alignment of functions, loops etc. $(cc-option-align) whrn used
as prefix to the align options will select the right prefix:
gcc < 3.00
cc-option-align = -malign
gcc >= 3.00
cc-option-align = -falign
Example:
CFLAGS += $(cc-option-align)-functions=4
In the above example the option -falign-functions=4 is used for
gcc >= 3.00. For gcc < 3.00 -malign-functions=4 is used.
cc-version
cc-version return a numerical version of the $(CC) compiler version.
The format is <major><minor> where both are two digits. So for example
gcc 3.41 would return 0341.
cc-version is useful when a specific $(CC) version is faulty in one
area, for example the -mregparm=3 were broken in some gcc version
even though the option was accepted by gcc.
Example:
#arch/i386/Makefile
cflags-y += $(shell \
if [ $(call cc-version) -ge 0300 ] ; then \
echo "-mregparm=3"; fi ;)
In the above example -mregparm=3 is only used for gcc version greater
than or equal to gcc 3.0.
cc-ifversion
cc-ifversion test the version of $(CC) and equals last argument if
version expression is true.
Example:
#fs/reiserfs/Makefile
EXTRA_CFLAGS := $(call cc-ifversion, -lt, 0402, -O1)
In this example EXTRA_CFLAGS will be assigned the value -O1 if the
$(CC) version is less than 4.2.
cc-ifversion takes all the shell operators:
-eq, -ne, -lt, -le, -gt, and -ge
The third parameter may be a text as in this example, but it may also
be an expanded variable or a macro.
=== 4 Host Program support
......@@ -973,74 +1069,6 @@ When kbuild executes the following steps are followed (roughly):
architecture specific files.
--- 6.9 $(CC) support functions
The kernel may be build with several different versions of
$(CC), each supporting a unique set of features and options.
kbuild provide basic support to check for valid options for $(CC).
$(CC) is useally the gcc compiler, but other alternatives are
available.
cc-option
cc-option is used to check if $(CC) support a given option, and not
supported to use an optional second option.
Example:
#arch/i386/Makefile
cflags-y += $(call cc-option,-march=pentium-mmx,-march=i586)
In the above example cflags-y will be assigned the option
-march=pentium-mmx if supported by $(CC), otherwise -march-i586.
The second argument to cc-option is optional, and if omitted
cflags-y will be assigned no value if first option is not supported.
cc-option-yn
cc-option-yn is used to check if gcc supports a given option
and return 'y' if supported, otherwise 'n'.
Example:
#arch/ppc/Makefile
biarch := $(call cc-option-yn, -m32)
aflags-$(biarch) += -a32
cflags-$(biarch) += -m32
In the above example $(biarch) is set to y if $(CC) supports the -m32
option. When $(biarch) equals to y the expanded variables $(aflags-y)
and $(cflags-y) will be assigned the values -a32 and -m32.
cc-option-align
gcc version >= 3.0 shifted type of options used to speify
alignment of functions, loops etc. $(cc-option-align) whrn used
as prefix to the align options will select the right prefix:
gcc < 3.00
cc-option-align = -malign
gcc >= 3.00
cc-option-align = -falign
Example:
CFLAGS += $(cc-option-align)-functions=4
In the above example the option -falign-functions=4 is used for
gcc >= 3.00. For gcc < 3.00 -malign-functions=4 is used.
cc-version
cc-version return a numerical version of the $(CC) compiler version.
The format is <major><minor> where both are two digits. So for example
gcc 3.41 would return 0341.
cc-version is useful when a specific $(CC) version is faulty in one
area, for example the -mregparm=3 were broken in some gcc version
even though the option was accepted by gcc.
Example:
#arch/i386/Makefile
cflags-y += $(shell \
if [ $(call cc-version) -ge 0300 ] ; then \
echo "-mregparm=3"; fi ;)
In the above example -mregparm=3 is only used for gcc version greater
than or equal to gcc 3.0.
=== 7 Kbuild Variables
The top Makefile exports the following variables:
......
......@@ -13,6 +13,7 @@ In this document you will find information about:
--- 2.2 Available targets
--- 2.3 Available options
--- 2.4 Preparing the kernel tree for module build
--- 2.5 Building separate files for a module
=== 3. Example commands
=== 4. Creating a kbuild file for an external module
=== 5. Include files
......@@ -22,7 +23,10 @@ In this document you will find information about:
=== 6. Module installation
--- 6.1 INSTALL_MOD_PATH
--- 6.2 INSTALL_MOD_DIR
=== 7. Module versioning
=== 7. Module versioning & Module.symvers
--- 7.1 Symbols fron the kernel (vmlinux + modules)
--- 7.2 Symbols and external modules
--- 7.3 Symbols from another external module
=== 8. Tips & Tricks
--- 8.1 Testing for CONFIG_FOO_BAR
......@@ -88,7 +92,8 @@ when building an external module.
make -C $KDIR M=$PWD modules_install
Install the external module(s).
Installation default is in /lib/modules/<kernel-version>/extra,
but may be prefixed with INSTALL_MOD_PATH - see separate chapter.
but may be prefixed with INSTALL_MOD_PATH - see separate
chapter.
make -C $KDIR M=$PWD clean
Remove all generated files for the module - the kernel
......@@ -131,6 +136,16 @@ when building an external module.
Therefore a full kernel build needs to be executed to make
module versioning work.
--- 2.5 Building separate files for a module
It is possible to build single files which is part of a module.
This works equal for the kernel, a module and even for external
modules.
Examples (module foo.ko, consist of bar.o, baz.o):
make -C $KDIR M=`pwd` bar.lst
make -C $KDIR M=`pwd` bar.o
make -C $KDIR M=`pwd` foo.ko
make -C $KDIR M=`pwd` /
=== 3. Example commands
......@@ -422,7 +437,7 @@ External modules are installed in the directory:
=> Install dir: /lib/modules/$(KERNELRELEASE)/gandalf
=== 7. Module versioning
=== 7. Module versioning & Module.symvers
Module versioning is enabled by the CONFIG_MODVERSIONS tag.
......@@ -432,10 +447,79 @@ when a module is loaded/used then the CRC values contained in the kernel are
compared with similar values in the module. If they are not equal then the
kernel refuses to load the module.
During a kernel build a file named Module.symvers will be generated. This
file includes the symbol version of all symbols within the kernel. If the
Module.symvers file is saved from the last full kernel compile one does not
have to do a full kernel compile to build a module version's compatible module.
Module.symvers contains a list of all exported symbols from a kernel build.
--- 7.1 Symbols fron the kernel (vmlinux + modules)
During a kernel build a file named Module.symvers will be generated.
Module.symvers contains all exported symbols from the kernel and
compiled modules. For each symbols the corresponding CRC value
is stored too.
The syntax of the Module.symvers file is:
<CRC> <Symbol> <module>
Sample:
0x2d036834 scsi_remove_host drivers/scsi/scsi_mod
For a kernel build without CONFIG_MODVERSIONING enabled the crc
would read: 0x00000000
Module.symvers serve two purposes.
1) It list all exported symbols both from vmlinux and all modules
2) It list CRC if CONFIG_MODVERSION is enabled
--- 7.2 Symbols and external modules
When building an external module the build system needs access to
the symbols from the kernel to check if all external symbols are
defined. This is done in the MODPOST step and to obtain all
symbols modpost reads Module.symvers from the kernel.
If a Module.symvers file is present in the directory where
the external module is being build this file will be read too.
During the MODPOST step a new Module.symvers file will be written
containing all exported symbols that was not defined in the kernel.
--- 7.3 Symbols from another external module
Sometimes one external module uses exported symbols from another
external module. Kbuild needs to have full knowledge on all symbols
to avoid spitting out warnings about undefined symbols.
Two solutions exist to let kbuild know all symbols of more than
one external module.
The method with a top-level kbuild file is recommended but may be
impractical in certain situations.
Use a top-level Kbuild file
If you have two modules: 'foo', 'bar' and 'foo' needs symbols
from 'bar' then one can use a common top-level kbuild file so
both modules are compiled in same build.
Consider following directory layout:
./foo/ <= contains the foo module
./bar/ <= contains the bar module
The top-level Kbuild file would then look like:
#./Kbuild: (this file may also be named Makefile)
obj-y := foo/ bar/
Executing:
make -C $KDIR M=`pwd`
will then do the expected and compile both modules with full
knowledge on symbols from both modules.
Use an extra Module.symvers file
When an external module is build a Module.symvers file is
generated containing all exported symbols which are not
defined in the kernel.
To get access to symbols from module 'bar' one can copy the
Module.symvers file from the compilation of the 'bar' module
to the directory where the 'foo' module is build.
During the module build kbuild will read the Module.symvers
file in the directory of the external module and when the
build is finished a new Module.symvers file is created
containing the sum of all symbols defined and not part of the
kernel.
=== 8. Tips & Tricks
......
......@@ -56,10 +56,6 @@ Here is the solution:
writing one file per option. It updates only the files for options
that have changed.
mkdep.c no longer generates warning messages for missing or unneeded
<linux/config.h> lines. The new top-level target 'make checkconfig'
checks for these problems.
Flag Dependencies
Martin Von Loewis contributed another feature to this patch:
......
This diff is collapsed.
#
# arch/arm/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
......@@ -177,7 +180,7 @@ endif
archprepare: maketools
.PHONY: maketools FORCE
PHONY += maketools FORCE
maketools: include/linux/version.h include/asm-arm/.arch FORCE
$(Q)$(MAKE) $(build)=arch/arm/tools include/asm-arm/mach-types.h
......
#
# arch/arm/boot/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
......@@ -73,7 +76,7 @@ $(obj)/bootpImage: $(obj)/bootp/bootp FORCE
$(call if_changed,objcopy)
@echo ' Kernel: $@ is ready'
.PHONY: initrd FORCE
PHONY += initrd FORCE
initrd:
@test "$(INITRD_PHYS)" != "" || \
(echo This machine does not support INITRD; exit -1)
......
#
# linux/arch/arm/boot/bootp/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
LDFLAGS_bootp :=-p --no-undefined -X \
--defsym initrd_phys=$(INITRD_PHYS) \
......@@ -21,4 +24,4 @@ $(obj)/kernel.o: arch/arm/boot/zImage FORCE
$(obj)/initrd.o: $(INITRD) FORCE
.PHONY: $(INITRD) FORCE
PHONY += $(INITRD) FORCE
#
# arch/arm26/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
......@@ -49,7 +52,7 @@ all: zImage
boot := arch/arm26/boot
.PHONY: maketools FORCE
PHONY += maketools FORCE
maketools: FORCE
......
#
# arch/arm26/boot/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
......@@ -60,7 +63,7 @@ $(obj)/xipImage: vmlinux FORCE
@echo ' Kernel: $@ is ready'
endif
.PHONY: initrd
PHONY += initrd
initrd:
@test "$(INITRD_PHYS)" != "" || \
(echo This machine does not support INITRD; exit -1)
......
......@@ -99,7 +99,7 @@ AFLAGS += $(mflags-y)
boot := arch/i386/boot
.PHONY: zImage bzImage compressed zlilo bzlilo \
PHONY += zImage bzImage compressed zlilo bzlilo \
zdisk bzdisk fdimage fdimage144 fdimage288 install
all: bzImage
......
......@@ -7,6 +7,7 @@
#include <asm-generic/vmlinux.lds.h>
#include <asm/thread_info.h>
#include <asm/page.h>
#include <asm/cache.h>
OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
OUTPUT_ARCH(i386)
......@@ -135,7 +136,7 @@ SECTIONS
__initramfs_start = .;
.init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { *(.init.ramfs) }
__initramfs_end = .;
. = ALIGN(32);
. = ALIGN(L1_CACHE_BYTES);
__per_cpu_start = .;
.data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { *(.data.percpu) }
__per_cpu_end = .;
......
#
# ia64/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
......@@ -62,7 +65,7 @@ drivers-$(CONFIG_OPROFILE) += arch/ia64/oprofile/
boot := arch/ia64/hp/sim/boot
.PHONY: boot compressed check
PHONY += boot compressed check
all: compressed unwcheck
......
#
# m32r/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
LDFLAGS :=
OBJCOPYFLAGS := -O binary -R .note -R .comment -S
......@@ -39,7 +42,7 @@ drivers-$(CONFIG_OPROFILE) += arch/m32r/oprofile/
boot := arch/m32r/boot
.PHONY: zImage
PHONY += zImage
all: zImage
......
......@@ -150,7 +150,7 @@ CPPFLAGS_vmlinux.lds := -Upowerpc
BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm uImage vmlinux.bin
.PHONY: $(BOOT_TARGETS)
PHONY += $(BOOT_TARGETS)
boot := arch/$(ARCH)/boot
......
......@@ -82,7 +82,7 @@ drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
.PHONY: $(BOOT_TARGETS)
PHONY += $(BOOT_TARGETS)
all: uImage zImage
......
#
# arch/ppc/boot/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
......@@ -22,7 +28,7 @@ subdir- += simple openfirmware
hostprogs-y := $(addprefix utils/, addnote mknote hack-coff mkprep mkbugboot mktree)
.PHONY: $(BOOT_TARGETS) $(bootdir-y)
PHONY += $(BOOT_TARGETS) $(bootdir-y)
$(BOOT_TARGETS): $(bootdir-y)
......
# Makefile for making bootable images on various OpenFirmware machines.
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# Paul Mackerras January 1997
# XCOFF bootable images for PowerMacs
# Geert Uytterhoeven September 1997
......@@ -86,7 +89,7 @@ $(images)/zImage.chrp-rs6k $(images)/zImage.initrd.chrp-rs6k: \
# The targets used on the make command-line
.PHONY: zImage zImage.initrd
PHONY += zImage zImage.initrd
zImage: $(images)/zImage.chrp \
$(images)/zImage.chrp-rs6k
@echo ' kernel: $@ is ready ($<)'
......@@ -96,7 +99,7 @@ zImage.initrd: $(images)/zImage.initrd.chrp \
TFTPIMAGE := /tftpboot/zImage
.PHONY: znetboot znetboot.initrd
PHONY += znetboot znetboot.initrd
znetboot: $(images)/zImage.chrp
cp $(images)/zImage.chrp $(TFTPIMAGE).chrp$(END)
@echo ' kernel: $@ is ready ($<)'
......
......@@ -172,7 +172,7 @@ include/asm-sh/.mach: $(wildcard include/config/sh/*.h) include/config/MARKER
archprepare: maketools include/asm-sh/.cpu include/asm-sh/.mach
.PHONY: maketools FORCE
PHONY += maketools FORCE
maketools: include/linux/version.h FORCE
$(Q)$(MAKE) $(build)=arch/sh/tools include/asm-sh/machtypes.h
......
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
# Licensed under the GPL
#
......@@ -88,7 +91,7 @@ CONFIG_KERNEL_HALF_GIGS ?= 0
SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
.PHONY: linux
PHONY += linux
all: linux
......
......@@ -67,7 +67,7 @@ drivers-$(CONFIG_OPROFILE) += arch/x86_64/oprofile/
boot := arch/x86_64/boot
.PHONY: bzImage bzlilo install archmrproper \
PHONY += bzImage bzlilo install archmrproper \
fdimage fdimage144 fdimage288 archclean
#Default target when executing "make"
......
# Ignore generated files
fore200e_mkfirm
fore200e_pca_fw.c
pca200e.bin
......@@ -12,7 +12,6 @@
*
*/
/* make checkconfig does not walk through include tree :-( */
#include <linux/config.h>
#include "matroxfb_DAC1064.h"
......
#ifndef __MATROXFB_DAC1064_H__
#define __MATROXFB_DAC1064_H__
/* make checkconfig does not walk through include tree */
#include <linux/config.h>
#include "matroxfb_base.h"
......
......@@ -78,7 +78,6 @@
*
*/
/* make checkconfig does not verify included files... */
#include <linux/config.h>
#include "matroxfb_Ti3026.h"
......
#ifndef __MATROXFB_TI3026_H__
#define __MATROXFB_TI3026_H__
/* make checkconfig does not walk through whole include tree */
#include <linux/config.h>
#include "matroxfb_base.h"
......
......@@ -99,7 +99,6 @@
*
*/
/* make checkconfig does not check included files... */
#include <linux/config.h>
#include <linux/version.h>
......
......@@ -84,7 +84,6 @@
*
*/
/* make checkconfig does not check includes for this... */
#include <linux/config.h>
#include "matroxfb_misc.h"
......
......@@ -365,43 +365,6 @@ config SHMEM
option replaces shmem and tmpfs with the much simpler ramfs code,
which may be appropriate on small systems without swap.
config CC_ALIGN_FUNCTIONS
int "Function alignment" if EMBEDDED
default 0
help
Align the start of functions to the next power-of-two greater than n,
skipping up to n bytes. For instance, 32 aligns functions
to the next 32-byte boundary, but 24 would align to the next
32-byte boundary only if this can be done by skipping 23 bytes or less.
Zero means use compiler's default.
config CC_ALIGN_LABELS
int "Label alignment" if EMBEDDED
default 0
help
Align all branch targets to a power-of-two boundary, skipping
up to n bytes like ALIGN_FUNCTIONS. This option can easily
make code slower, because it must insert dummy operations for
when the branch target is reached in the usual flow of the code.
Zero means use compiler's default.
config CC_ALIGN_LOOPS
int "Loop alignment" if EMBEDDED
default 0
help
Align loops to a power-of-two boundary, skipping up to n bytes.
Zero means use compiler's default.
config CC_ALIGN_JUMPS
int "Jump alignment" if EMBEDDED
default 0
help
Align branch targets to a power-of-two boundary, for branch
targets where the targets can only be reached by jumping,
skipping up to n bytes like ALIGN_FUNCTIONS. In this case,
no dummy operations need be executed.
Zero means use compiler's default.
config SLAB
default y
bool "Use full SLAB allocator" if EMBEDDED
......
......@@ -44,6 +44,43 @@ define filechk
fi
endef
######
# gcc support functions
# See documentation in Documentation/kbuild/makefiles.txt
# as-option
# Usage: cflags-y += $(call as-option, -Wa$(comma)-isa=foo,)
as-option = $(shell if $(CC) $(CFLAGS) $(1) -Wa,-Z -c -o /dev/null \
-xassembler /dev/null > /dev/null 2>&1; then echo "$(1)"; \
else echo "$(2)"; fi ;)
# cc-option
# Usage: cflags-y += $(call cc-option, -march=winchip-c6, -march=i586)
cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
> /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
# cc-option-yn
# Usage: flag := $(call cc-option-yn, -march=winchip-c6)
cc-option-yn = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
> /dev/null 2>&1; then echo "y"; else echo "n"; fi;)
# cc-option-align
# Prefix align with either -falign or -malign
cc-option-align = $(subst -functions=0,,\
$(call cc-option,-falign-functions=0,-malign-functions=0))
# cc-version
# Usage gcc-ver := $(call cc-version, $(CC))
cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \
$(if $(1), $(1), $(CC)))
# cc-ifversion
# Usage: EXTRA_CFLAGS += $(call cc-ifversion, -lt, 0402, -O1)
cc-ifversion = $(shell if [ $(call cc-version, $(CC)) $(1) $(2) ]; then \
echo $(3); fi;)
###
# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=
# Usage:
......@@ -51,8 +88,7 @@ endef
build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
# If quiet is set, only print short version of command
cmd = @$(if $($(quiet)cmd_$(1)),\
echo ' $(call escsq,$($(quiet)cmd_$(1)))' &&) $(cmd_$(1))
cmd = @$(echo-cmd) $(cmd_$(1))
# Add $(obj)/ for paths that is not absolute
objectify = $(foreach o,$(1),$(if $(filter /%,$(o)),$(o),$(obj)/$(o)))
......@@ -75,30 +111,33 @@ endif
echo-cmd = $(if $($(quiet)cmd_$(1)), \
echo ' $(call escsq,$($(quiet)cmd_$(1)))';)
make-cmd = $(subst \#,\\\#,$(subst $$,$$$$,$(call escsq,$(cmd_$(1)))))
# function to only execute the passed command if necessary
# >'< substitution is for echo to work, >$< substitution to preserve $ when reloading .cmd file
# note: when using inline perl scripts [perl -e '...$$t=1;...'] in $(cmd_xxx) double $$ your perl vars
#
if_changed = $(if $(strip $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \
if_changed = $(if $(strip $(filter-out $(PHONY),$?) \
$(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \
@set -e; \
$(echo-cmd) \
$(cmd_$(1)); \
echo 'cmd_$@ := $(subst $$,$$$$,$(call escsq,$(cmd_$(1))))' > $(@D)/.$(@F).cmd)
$(echo-cmd) $(cmd_$(1)); \
echo 'cmd_$@ := $(make-cmd)' > $(@D)/.$(@F).cmd)
# execute the command and also postprocess generated .d dependencies
# file
if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\
if_changed_dep = $(if $(strip $(filter-out $(PHONY),$?) \
$(filter-out FORCE $(wildcard $^),$^) \
$(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \
@set -e; \
$(echo-cmd) \
$(cmd_$(1)); \
scripts/basic/fixdep $(depfile) $@ '$(subst $$,$$$$,$(call escsq,$(cmd_$(1))))' > $(@D)/.$(@F).tmp; \
$(echo-cmd) $(cmd_$(1)); \
scripts/basic/fixdep $(depfile) $@ '$(make-cmd)' > $(@D)/.$(@F).tmp; \
rm -f $(depfile); \
mv -f $(@D)/.$(@F).tmp $(@D)/.$(@F).cmd)
# Usage: $(call if_changed_rule,foo)
# will check if $(cmd_foo) changed, or any of the prequisites changed,
# and if so will execute $(rule_foo)
if_changed_rule = $(if $(strip $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ),\
if_changed_rule = $(if $(strip $(filter-out $(PHONY),$?) \
$(call arg-check, $(cmd_$(1)), $(cmd_$@)) ),\
@set -e; \
$(rule_$(1)))
......@@ -4,17 +4,18 @@
src := $(obj)
.PHONY: __build
PHONY := __build
__build:
# Read .config if it exist, otherwise ignore
-include .config
include scripts/Kbuild.include
# The filename Kbuild has precedence over Makefile
kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
include scripts/Kbuild.include
include scripts/Makefile.lib
ifdef host-progs
......@@ -128,7 +129,7 @@ $(multi-objs-y:.o=.s) : modname = $(modname-multi)
$(multi-objs-y:.o=.lst) : modname = $(modname-multi)
quiet_cmd_cc_s_c = CC $(quiet_modtag) $@
cmd_cc_s_c = $(CC) $(c_flags) -S -o $@ $<
cmd_cc_s_c = $(CC) $(c_flags) -fverbose-asm -S -o $@ $<
%.s: %.c FORCE
$(call if_changed_dep,cc_s_c)
......@@ -165,7 +166,7 @@ cmd_cc_o_c = $(CC) $(c_flags) -c -o $(@D)/.tmp_$(@F) $<
cmd_modversions = \
if $(OBJDUMP) -h $(@D)/.tmp_$(@F) | grep -q __ksymtab; then \
$(CPP) -D__GENKSYMS__ $(c_flags) $< \
| $(GENKSYMS) \
| $(GENKSYMS) -a $(ARCH) \
> $(@D)/.tmp_$(@F:.o=.ver); \
\
$(LD) $(LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F) \
......@@ -177,12 +178,10 @@ cmd_modversions = \
endif
define rule_cc_o_c
$(if $($(quiet)cmd_checksrc),echo ' $($(quiet)cmd_checksrc)';) \
$(cmd_checksrc) \
$(if $($(quiet)cmd_cc_o_c),echo ' $(call escsq,$($(quiet)cmd_cc_o_c))';) \
$(cmd_cc_o_c); \
$(call echo-cmd,checksrc) $(cmd_checksrc) \
$(call echo-cmd,cc_o_c) $(cmd_cc_o_c); \
$(cmd_modversions) \
scripts/basic/fixdep $(depfile) $@ '$(call escsq,$(cmd_cc_o_c))' > $(@D)/.$(@F).tmp; \
scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' > $(@D)/.$(@F).tmp; \
rm -f $(depfile); \
mv -f $(@D)/.$(@F).tmp $(@D)/.$(@F).cmd
endef
......@@ -309,14 +308,14 @@ targets += $(multi-used-y) $(multi-used-m)
# Descending
# ---------------------------------------------------------------------------
.PHONY: $(subdir-ym)
PHONY += $(subdir-ym)
$(subdir-ym):
$(Q)$(MAKE) $(build)=$@
# Add FORCE to the prequisites of a target to force it to be always rebuilt.
# ---------------------------------------------------------------------------
.PHONY: FORCE
PHONY += FORCE
FORCE:
......@@ -331,3 +330,9 @@ cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
ifneq ($(cmd_files),)
include $(cmd_files)
endif
# Declare the contents of the .PHONY variable as phony. We keep that
# information in a variable se we can use it in if_changed and friends.
.PHONY: $(PHONY)
......@@ -4,7 +4,7 @@
src := $(obj)
.PHONY: __clean
PHONY := __clean
__clean:
# Shorthand for $(Q)$(MAKE) scripts/Makefile.clean obj=dir
......@@ -87,10 +87,16 @@ endif
# Descending
# ---------------------------------------------------------------------------
.PHONY: $(subdir-ymn)
PHONY += $(subdir-ymn)
$(subdir-ymn):
$(Q)$(MAKE) $(clean)=$@
# If quiet is set, only print short version of command
cmd = @$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
# Declare the contents of the .PHONY variable as phony. We keep that
# information in a variable se we can use it in if_changed and friends.
.PHONY: $(PHONY)
......@@ -2,7 +2,7 @@
# Installing modules
# ==========================================================================
.PHONY: __modinst
PHONY := __modinst
__modinst:
include scripts/Kbuild.include
......@@ -12,7 +12,7 @@ include scripts/Kbuild.include
__modules := $(sort $(shell grep -h '\.ko' /dev/null $(wildcard $(MODVERDIR)/*.mod)))
modules := $(patsubst %.o,%.ko,$(wildcard $(__modules:.ko=.o)))
.PHONY: $(modules)
PHONY += $(modules)
__modinst: $(modules)
@:
......@@ -27,3 +27,9 @@ modinst_dir = $(if $(KBUILD_EXTMOD),$(ext-mod-dir),kernel/$(@D))
$(modules):
$(call cmd,modules_install,$(MODLIB)/$(modinst_dir))
# Declare the contents of the .PHONY variable as phony. We keep that
# information in a variable se we can use it in if_changed and friends.
.PHONY: $(PHONY)
......@@ -32,14 +32,15 @@
# Step 4 is solely used to allow module versioning in external modules,
# where the CRC of each module is retrieved from the Module.symers file.
.PHONY: _modpost
PHONY := _modpost
_modpost: __modpost
include .config
include scripts/Kbuild.include
include scripts/Makefile.lib
symverfile := $(objtree)/Module.symvers
kernelsymfile := $(objtree)/Module.symvers
modulesymfile := $(KBUILD_EXTMOD)/Modules.symvers
# Step 1), find all modules listed in $(MODVERDIR)/
__modules := $(sort $(shell grep -h '\.ko' /dev/null $(wildcard $(MODVERDIR)/*.mod)))
......@@ -54,10 +55,12 @@ quiet_cmd_modpost = MODPOST
cmd_modpost = scripts/mod/modpost \
$(if $(CONFIG_MODVERSIONS),-m) \
$(if $(CONFIG_MODULE_SRCVERSION_ALL),-a,) \
$(if $(KBUILD_EXTMOD),-i,-o) $(symverfile) \
$(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile) \
$(if $(KBUILD_EXTMOD),-I $(modulesymfile)) \
$(if $(KBUILD_EXTMOD),-o $(modulesymfile)) \
$(filter-out FORCE,$^)
.PHONY: __modpost
PHONY += __modpost
__modpost: $(wildcard vmlinux) $(modules:.ko=.o) FORCE
$(call cmd,modpost)
......@@ -94,7 +97,7 @@ targets += $(modules)
# Add FORCE to the prequisites of a target to force it to be always rebuilt.
# ---------------------------------------------------------------------------
.PHONY: FORCE
PHONY += FORCE
FORCE:
......@@ -109,3 +112,9 @@ cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
ifneq ($(cmd_files),)
include $(cmd_files)
endif
# Declare the contents of the .PHONY variable as phony. We keep that
# information in a variable se we can use it in if_changed and friends.
.PHONY: $(PHONY)
......@@ -132,20 +132,10 @@ void usage(void)
/*
* Print out the commandline prefixed with cmd_<target filename> :=
* If commandline contains '#' escape with '\' so make to not see
* the '#' as a start-of-comment symbol
**/
*/
void print_cmdline(void)
{
char *p = cmdline;
printf("cmd_%s := ", target);
for (; *p; p++) {
if (*p == '#')
printf("\\");
printf("%c", *p);
}
printf("\n\n");
printf("cmd_%s := %s\n\n", target, cmdline);
}
char * str_config = NULL;
......
#! /usr/bin/perl
#
# checkconfig: find uses of CONFIG_* names without matching definitions.
# Copyright abandoned, 1998, Michael Elizabeth Chastain <mailto:mec@shout.net>.
use integer;
$| = 1;
foreach $file (@ARGV)
{
# Open this file.
open(FILE, $file) || die "Can't open $file: $!\n";
# Initialize variables.
my $fInComment = 0;
my $fInString = 0;
my $fUseConfig = 0;
my $iLinuxConfig = 0;
my %configList = ();
LINE: while ( <FILE> )
{
# Strip comments.
$fInComment && (s+^.*?\*/+ +o ? ($fInComment = 0) : next);
m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.*$+ +o && ($fInComment = 1)));
# Pick up definitions.
if ( m/^\s*#/o )
{
$iLinuxConfig = $. if m/^\s*#\s*include\s*"linux\/config\.h"/o;
$configList{uc $1} = 1 if m/^\s*#\s*include\s*"config\/(\S*)\.h"/o;
}
# Strip strings.
$fInString && (s+^.*?"+ +o ? ($fInString = 0) : next);
m+"+o && (s+".*?"+ +go, (s+".*$+ +o && ($fInString = 1)));
# Pick up definitions.
if ( m/^\s*#/o )
{
$iLinuxConfig = $. if m/^\s*#\s*include\s*<linux\/config\.h>/o;
$configList{uc $1} = 1 if m/^\s*#\s*include\s*<config\/(\S*)\.h>/o;
$configList{$1} = 1 if m/^\s*#\s*define\s+CONFIG_(\w*)/o;
$configList{$1} = 1 if m/^\s*#\s*undef\s+CONFIG_(\w*)/o;
}
# Look for usages.
next unless m/CONFIG_/o;
WORD: while ( m/\bCONFIG_(\w+)/og )
{
$fUseConfig = 1;
last LINE if $iLinuxConfig;
next WORD if exists $configList{$1};
print "$file: $.: need CONFIG_$1.\n";
$configList{$1} = 0;
}
}
# Report superfluous includes.
if ( $iLinuxConfig && ! $fUseConfig )
{ print "$file: $iLinuxConfig: linux/config.h not needed.\n"; }
close(FILE);
}
This diff is collapsed.
......@@ -20,27 +20,22 @@
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#ifndef MODUTILS_GENKSYMS_H
#define MODUTILS_GENKSYMS_H 1
#include <stdio.h>
enum symbol_type
{
enum symbol_type {
SYM_NORMAL, SYM_TYPEDEF, SYM_ENUM, SYM_STRUCT, SYM_UNION
};
struct string_list
{
struct string_list {
struct string_list *next;
enum symbol_type tag;
char *string;
};
struct symbol
{
struct symbol {
struct symbol *hash_next;
const char *name;
enum symbol_type type;
......@@ -52,42 +47,24 @@ struct symbol
typedef struct string_list **yystype;
#define YYSTYPE yystype
extern FILE *outfile, *debugfile;
extern int cur_line;
extern char *cur_filename, *output_directory;
extern int flag_debug, flag_dump_defs, flag_warnings;
extern int checksum_version, kernel_version;
extern int want_brace_phrase, want_exp_phrase, discard_phrase_contents;
extern struct string_list *current_list, *next_list;
extern char *cur_filename;
struct symbol *find_symbol(const char *name, enum symbol_type ns);
struct symbol *add_symbol(const char *name, enum symbol_type type,
struct string_list *defn, int is_extern);
void export_symbol(const char *);
struct string_list *reset_list(void);
void free_list(struct string_list *s, struct string_list *e);
void free_node(struct string_list *list);
void free_list(struct string_list *s, struct string_list *e);
struct string_list *copy_node(struct string_list *);
struct string_list *copy_list(struct string_list *s, struct string_list *e);
int equal_list(struct string_list *a, struct string_list *b);
void print_list(FILE *, struct string_list *list);
int yylex(void);
int yyparse(void);
void error_with_pos(const char *, ...);
#define version(a,b,c) ((a << 16) | (b << 8) | (c))
/*----------------------------------------------------------------------*/
#define MODUTILS_VERSION "<in-kernel>"
#define xmalloc(size) ({ void *__ptr = malloc(size); \
if(!__ptr && size != 0) { \
fprintf(stderr, "out of memory\n"); \
......
......@@ -2,7 +2,7 @@
# Kernel configuration targets
# These targets are used from top-level makefile
.PHONY: oldconfig xconfig gconfig menuconfig config silentoldconfig update-po-config
PHONY += oldconfig xconfig gconfig menuconfig config silentoldconfig update-po-config
xconfig: $(obj)/qconf
$< arch/$(ARCH)/Kconfig
......@@ -42,7 +42,7 @@ update-po-config: $(obj)/kxgettext
$(Q)rm -f arch/um/Kconfig_arch
$(Q)rm -f scripts/kconfig/linux_*.pot scripts/kconfig/config.pot
.PHONY: randconfig allyesconfig allnoconfig allmodconfig defconfig
PHONY += randconfig allyesconfig allnoconfig allmodconfig defconfig
randconfig: $(obj)/conf
$< -r arch/$(ARCH)/Kconfig
......@@ -78,7 +78,7 @@ help:
@echo ' defconfig - New config with default answer to all options'
@echo ' allmodconfig - New config selecting modules when possible'
@echo ' allyesconfig - New config where all options are accepted with yes'
@echo ' allnoconfig - New minimal config'
@echo ' allnoconfig - New config where all options are answered with no'
# ===========================================================================
# Shared Makefile for the various kconfig executables:
......
......@@ -374,6 +374,7 @@ int conf_write(const char *name)
out_h = fopen(".tmpconfig.h", "w");
if (!out_h)
return 1;
file_write_dep(NULL);
}
sym = sym_lookup("KERNELVERSION", 0);
sym_calc_value(sym);
......@@ -512,7 +513,6 @@ int conf_write(const char *name)
if (out_h) {
fclose(out_h);
rename(".tmpconfig.h", "include/linux/autoconf.h");
file_write_dep(NULL);
}
if (!name || basename != conf_def_filename) {
if (!name)
......
......@@ -10,7 +10,7 @@ HOST_LOADLIBES = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ldflags $(HOSTCC))
HOST_EXTRACFLAGS += -DLOCALE
.PHONY: dochecklxdialog
PHONY += dochecklxdialog
$(obj)/dochecklxdialog:
$(Q)$(CONFIG_SHELL) $(check-lxdialog) -check $(HOSTCC) $(HOST_LOADLIBES)
......
......@@ -21,11 +21,13 @@ KERNELOUTPUT := $2
MAKEFLAGS += --no-print-directory
.PHONY: all \$(MAKECMDGOALS)
all:
\$(MAKE) -C \$(KERNELSRC) O=\$(KERNELOUTPUT)
%::
\$(MAKE) -C \$(KERNELSRC) O=\$(KERNELOUTPUT) \$@
Makefile:;
\$(filter-out all Makefile,\$(MAKECMDGOALS)) %/:
\$(MAKE) -C \$(KERNELSRC) O=\$(KERNELOUTPUT) \$@
EOF
......@@ -153,7 +153,7 @@ static void do_usb_table(void *symval, unsigned long size,
const unsigned long id_size = sizeof(struct usb_device_id);
if (size % id_size || size < id_size) {
fprintf(stderr, "*** Warning: %s ids %lu bad size "
warn("%s ids %lu bad size "
"(each on %lu)\n", mod->name, size, id_size);
}
/* Leave last one: it's the terminator. */
......@@ -217,8 +217,7 @@ static int do_pci_entry(const char *filename,
if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
|| (subclass_mask != 0 && subclass_mask != 0xFF)
|| (interface_mask != 0 && interface_mask != 0xFF)) {
fprintf(stderr,
"*** Warning: Can't handle masks in %s:%04X\n",
warn("Can't handle masks in %s:%04X\n",
filename, id->class_mask);
return 0;
}
......@@ -445,7 +444,7 @@ static void do_table(void *symval, unsigned long size,
int (*do_entry)(const char *, void *entry, char *alias) = function;
if (size % id_size || size < id_size) {
fprintf(stderr, "*** Warning: %s ids %lu bad size "
warn("%s ids %lu bad size "
"(each on %lu)\n", mod->name, size, id_size);
}
/* Leave last one: it's the terminator. */
......
This diff is collapsed.
......@@ -16,17 +16,27 @@
#define Elf_Ehdr Elf32_Ehdr
#define Elf_Shdr Elf32_Shdr
#define Elf_Sym Elf32_Sym
#define Elf_Addr Elf32_Addr
#define Elf_Section Elf32_Section
#define ELF_ST_BIND ELF32_ST_BIND
#define ELF_ST_TYPE ELF32_ST_TYPE
#define Elf_Rela Elf32_Rela
#define ELF_R_SYM ELF32_R_SYM
#define ELF_R_TYPE ELF32_R_TYPE
#else
#define Elf_Ehdr Elf64_Ehdr
#define Elf_Shdr Elf64_Shdr
#define Elf_Sym Elf64_Sym
#define Elf_Addr Elf64_Addr
#define Elf_Section Elf64_Section
#define ELF_ST_BIND ELF64_ST_BIND
#define ELF_ST_TYPE ELF64_ST_TYPE
#define Elf_Rela Elf64_Rela
#define ELF_R_SYM ELF64_R_SYM
#define ELF_R_TYPE ELF64_R_TYPE
#endif
#if KERNEL_ELFDATA != HOST_ELFDATA
......@@ -91,17 +101,22 @@ struct elf_info {
unsigned int modinfo_len;
};
/* file2alias.c */
void handle_moddevtable(struct module *mod, struct elf_info *info,
Elf_Sym *sym, const char *symname);
void add_moddevtable(struct buffer *buf, struct module *mod);
/* sumversion.c */
void maybe_frob_rcs_version(const char *modfilename,
char *version,
void *modinfo,
unsigned long modinfo_offset);
void get_src_version(const char *modname, char sum[], unsigned sumlen);
/* from modpost.c */
void *grab_file(const char *filename, unsigned long *size);
char* get_next_line(unsigned long *pos, void *file, unsigned long size);
void release_file(void *file, unsigned long size);
void fatal(const char *fmt, ...);
void warn(const char *fmt, ...);
......@@ -316,8 +316,7 @@ static int parse_source_files(const char *objfile, struct md4_ctx *md)
file = grab_file(cmd, &flen);
if (!file) {
fprintf(stderr, "Warning: could not find %s for %s\n",
cmd, objfile);
warn("could not find %s for %s\n", cmd, objfile);
goto out;
}
......@@ -355,8 +354,7 @@ static int parse_source_files(const char *objfile, struct md4_ctx *md)
/* Check if this file is in same dir as objfile */
if ((strstr(line, dir)+strlen(dir)-1) == strrchr(line, '/')) {
if (!parse_file(line, md)) {
fprintf(stderr,
"Warning: could not open %s: %s\n",
warn("could not open %s: %s\n",
line, strerror(errno));
goto out_file;
}
......@@ -383,8 +381,11 @@ void get_src_version(const char *modname, char sum[], unsigned sumlen)
struct md4_ctx md;
char *sources, *end, *fname;
const char *basename;
char filelist[strlen(getenv("MODVERDIR")) + strlen("/") +
strlen(modname) - strlen(".o") + strlen(".mod") + 1 ];
char filelist[PATH_MAX + 1];
char *modverdir = getenv("MODVERDIR");
if (!modverdir)
modverdir = ".";
/* Source files for module are in .tmp_versions/modname.mod,
after the first line. */
......@@ -392,28 +393,25 @@ void get_src_version(const char *modname, char sum[], unsigned sumlen)
basename = strrchr(modname, '/') + 1;
else
basename = modname;
sprintf(filelist, "%s/%.*s.mod", getenv("MODVERDIR"),
sprintf(filelist, "%s/%.*s.mod", modverdir,
(int) strlen(basename) - 2, basename);
file = grab_file(filelist, &len);
if (!file) {
fprintf(stderr, "Warning: could not find versions for %s\n",
filelist);
warn("could not find versions for %s\n", filelist);
return;
}
sources = strchr(file, '\n');
if (!sources) {
fprintf(stderr, "Warning: malformed versions file for %s\n",
modname);
warn("malformed versions file for %s\n", modname);
goto release;
}
sources++;
end = strchr(sources, '\n');
if (!end) {
fprintf(stderr, "Warning: bad ending versions file for %s\n",
modname);
warn("bad ending versions file for %s\n", modname);
goto release;
}
*end = '\0';
......@@ -438,19 +436,19 @@ static void write_version(const char *filename, const char *sum,
fd = open(filename, O_RDWR);
if (fd < 0) {
fprintf(stderr, "Warning: changing sum in %s failed: %s\n",
warn("changing sum in %s failed: %s\n",
filename, strerror(errno));
return;
}
if (lseek(fd, offset, SEEK_SET) == (off_t)-1) {
fprintf(stderr, "Warning: changing sum in %s:%lu failed: %s\n",
warn("changing sum in %s:%lu failed: %s\n",
filename, offset, strerror(errno));
goto out;
}
if (write(fd, sum, strlen(sum)+1) != strlen(sum)+1) {
fprintf(stderr, "Warning: writing sum in %s failed: %s\n",
warn("writing sum in %s failed: %s\n",
filename, strerror(errno));
goto out;
}
......
......@@ -66,8 +66,8 @@ require 5; # at least perl 5
use strict;
use File::Find;
my $nm = "/usr/bin/nm -p";
my $objdump = "/usr/bin/objdump -s -j .comment";
my $nm = ($ENV{'NM'} || "nm") . " -p";
my $objdump = ($ENV{'OBJDUMP'} || "objdump") . " -s -j .comment";
my $srctree = "";
my $objtree = "";
$srctree = "$ENV{'srctree'}/" if (exists($ENV{'srctree'}));
......
......@@ -32,12 +32,11 @@ MKSPEC := $(srctree)/scripts/package/mkspec
PREV := set -e; cd ..;
# rpm-pkg
.PHONY: rpm-pkg rpm
# ---------------------------------------------------------------------------
$(objtree)/kernel.spec: $(MKSPEC) $(srctree)/Makefile
$(CONFIG_SHELL) $(MKSPEC) > $@
rpm-pkg rpm: $(objtree)/kernel.spec
rpm-pkg rpm: $(objtree)/kernel.spec FORCE
$(MAKE) clean
$(PREV) ln -sf $(srctree) $(KERNELPATH)
$(PREV) tar -cz $(RCS_TAR_IGNORE) -f $(KERNELPATH).tar.gz $(KERNELPATH)/.
......@@ -54,11 +53,11 @@ rpm-pkg rpm: $(objtree)/kernel.spec
clean-files := $(objtree)/kernel.spec
# binrpm-pkg
.PHONY: binrpm-pkg
# ---------------------------------------------------------------------------
$(objtree)/binkernel.spec: $(MKSPEC) $(srctree)/Makefile
$(CONFIG_SHELL) $(MKSPEC) prebuilt > $@
binrpm-pkg: $(objtree)/binkernel.spec
binrpm-pkg: $(objtree)/binkernel.spec FORCE
$(MAKE) KBUILD_SRC=
set -e; \
$(CONFIG_SHELL) $(srctree)/scripts/mkversion > $(objtree)/.tmp_version
......@@ -71,9 +70,7 @@ clean-files += $(objtree)/binkernel.spec
# Deb target
# ---------------------------------------------------------------------------
#
.PHONY: deb-pkg
deb-pkg:
deb-pkg: FORCE
$(MAKE) KBUILD_SRC=
$(CONFIG_SHELL) $(srctree)/scripts/package/builddeb
......@@ -82,8 +79,7 @@ clean-dirs += $(objtree)/debian/
# tarball targets
# ---------------------------------------------------------------------------
.PHONY: tar%pkg
tar%pkg:
tar%pkg: FORCE
$(MAKE) KBUILD_SRC=
$(CONFIG_SHELL) $(srctree)/scripts/package/buildtar $@
......@@ -92,7 +88,7 @@ clean-dirs += $(objtree)/tar-install/
# Help text displayed when executing 'make help'
# ---------------------------------------------------------------------------
help:
help: FORCE
@echo ' rpm-pkg - Build the kernel as an RPM package'
@echo ' binrpm-pkg - Build an rpm package containing the compiled kernel'
@echo ' and modules'
......
#!/usr/bin/perl -w
#
# reference_discarded.pl (C) Keith Owens 2001 <kaos@ocs.com.au>
#
# Released under GPL V2.
#
# List dangling references to vmlinux discarded sections.
use strict;
die($0 . " takes no arguments\n") if($#ARGV >= 0);
my %object;
my $object;
my $line;
my $ignore;
my $errorcount;
$| = 1;
# printf("Finding objects, ");
open(OBJDUMP_LIST, "find . -name '*.o' | xargs objdump -h |") || die "getting objdump list failed";
while (defined($line = <OBJDUMP_LIST>)) {
chomp($line);
if ($line =~ /:\s+file format/) {
($object = $line) =~ s/:.*//;
$object{$object}->{'module'} = 0;
$object{$object}->{'size'} = 0;
$object{$object}->{'off'} = 0;
}
if ($line =~ /^\s*\d+\s+\.modinfo\s+/) {
$object{$object}->{'module'} = 1;
}
if ($line =~ /^\s*\d+\s+\.comment\s+/) {
($object{$object}->{'size'}, $object{$object}->{'off'}) = (split(' ', $line))[2,5];
}
}
close(OBJDUMP_LIST);
# printf("%d objects, ", scalar keys(%object));
$ignore = 0;
foreach $object (keys(%object)) {
if ($object{$object}->{'module'}) {
++$ignore;
delete($object{$object});
}
}
# printf("ignoring %d module(s)\n", $ignore);
# Ignore conglomerate objects, they have been built from multiple objects and we
# only care about the individual objects. If an object has more than one GCC:
# string in the comment section then it is conglomerate. This does not filter
# out conglomerates that consist of exactly one object, can't be helped.
# printf("Finding conglomerates, ");
$ignore = 0;
foreach $object (keys(%object)) {
if (exists($object{$object}->{'off'})) {
my ($off, $size, $comment, $l);
$off = hex($object{$object}->{'off'});
$size = hex($object{$object}->{'size'});
open(OBJECT, "<$object") || die "cannot read $object";
seek(OBJECT, $off, 0) || die "seek to $off in $object failed";
$l = read(OBJECT, $comment, $size);
die "read $size bytes from $object .comment failed" if ($l != $size);
close(OBJECT);
if ($comment =~ /GCC\:.*GCC\:/m || $object =~ /built-in\.o/) {
++$ignore;
delete($object{$object});
}
}
}
# printf("ignoring %d conglomerate(s)\n", $ignore);
# printf("Scanning objects\n");
# Keith Ownes <kaos@sgi.com> commented:
# For our future {in}sanity, add a comment that this is the ppc .opd
# section, not the ia64 .opd section.
# ia64 .opd should not point to discarded sections.
$errorcount = 0;
foreach $object (keys(%object)) {
my $from;
open(OBJDUMP, "objdump -r $object|") || die "cannot objdump -r $object";
while (defined($line = <OBJDUMP>)) {
chomp($line);
if ($line =~ /RELOCATION RECORDS FOR /) {
($from = $line) =~ s/.*\[([^]]*).*/$1/;
}
if (($line =~ /\.text\.exit$/ ||
$line =~ /\.exit\.text$/ ||
$line =~ /\.data\.exit$/ ||
$line =~ /\.exit\.data$/ ||
$line =~ /\.exitcall\.exit$/) &&
($from !~ /\.text\.exit$/ &&
$from !~ /\.exit\.text$/ &&
$from !~ /\.data\.exit$/ &&
$from !~ /\.opd$/ &&
$from !~ /\.exit\.data$/ &&
$from !~ /\.altinstructions$/ &&
$from !~ /\.pdr$/ &&
$from !~ /\.debug_.*$/ &&
$from !~ /\.exitcall\.exit$/ &&
$from !~ /\.eh_frame$/ &&
$from !~ /\.stab$/)) {
printf("Error: %s %s refers to %s\n", $object, $from, $line);
$errorcount = $errorcount + 1;
}
}
close(OBJDUMP);
}
# printf("Done\n");
exit(0);
#!/usr/bin/perl -w
#
# reference_init.pl (C) Keith Owens 2002 <kaos@ocs.com.au>
#
# List references to vmlinux init sections from non-init sections.
# Unfortunately I had to exclude references from read only data to .init
# sections, almost all of these are false positives, they are created by
# gcc. The downside of excluding rodata is that there really are some
# user references from rodata to init code, e.g. drivers/video/vgacon.c
#
# const struct consw vga_con = {
# con_startup: vgacon_startup,
#
# where vgacon_startup is __init. If you want to wade through the false
# positives, take out the check for rodata.
use strict;
die($0 . " takes no arguments\n") if($#ARGV >= 0);
my %object;
my $object;
my $line;
my $ignore;
$| = 1;
printf("Finding objects, ");
open(OBJDUMP_LIST, "find . -name '*.o' | xargs objdump -h |") || die "getting objdump list failed";
while (defined($line = <OBJDUMP_LIST>)) {
chomp($line);
if ($line =~ /:\s+file format/) {
($object = $line) =~ s/:.*//;
$object{$object}->{'module'} = 0;
$object{$object}->{'size'} = 0;
$object{$object}->{'off'} = 0;
}
if ($line =~ /^\s*\d+\s+\.modinfo\s+/) {
$object{$object}->{'module'} = 1;
}
if ($line =~ /^\s*\d+\s+\.comment\s+/) {
($object{$object}->{'size'}, $object{$object}->{'off'}) = (split(' ', $line))[2,5];
}
}
close(OBJDUMP_LIST);
printf("%d objects, ", scalar keys(%object));
$ignore = 0;
foreach $object (keys(%object)) {
if ($object{$object}->{'module'}) {
++$ignore;
delete($object{$object});
}
}
printf("ignoring %d module(s)\n", $ignore);
# Ignore conglomerate objects, they have been built from multiple objects and we
# only care about the individual objects. If an object has more than one GCC:
# string in the comment section then it is conglomerate. This does not filter
# out conglomerates that consist of exactly one object, can't be helped.
printf("Finding conglomerates, ");
$ignore = 0;
foreach $object (keys(%object)) {
if (exists($object{$object}->{'off'})) {
my ($off, $size, $comment, $l);
$off = hex($object{$object}->{'off'});
$size = hex($object{$object}->{'size'});
open(OBJECT, "<$object") || die "cannot read $object";
seek(OBJECT, $off, 0) || die "seek to $off in $object failed";
$l = read(OBJECT, $comment, $size);
die "read $size bytes from $object .comment failed" if ($l != $size);
close(OBJECT);
if ($comment =~ /GCC\:.*GCC\:/m || $object =~ /built-in\.o/) {
++$ignore;
delete($object{$object});
}
}
}
printf("ignoring %d conglomerate(s)\n", $ignore);
printf("Scanning objects\n");
foreach $object (sort(keys(%object))) {
my $from;
open(OBJDUMP, "objdump -r $object|") || die "cannot objdump -r $object";
while (defined($line = <OBJDUMP>)) {
chomp($line);
if ($line =~ /RELOCATION RECORDS FOR /) {
($from = $line) =~ s/.*\[([^]]*).*/$1/;
}
if (($line =~ /\.init$/ || $line =~ /\.init\./) &&
($from !~ /\.init$/ &&
$from !~ /\.init\./ &&
$from !~ /\.stab$/ &&
$from !~ /\.rodata$/ &&
$from !~ /\.text\.lock$/ &&
$from !~ /\.pci_fixup_header$/ &&
$from !~ /\.pci_fixup_final$/ &&
$from !~ /\.pdr$/ &&
$from !~ /\__param$/ &&
$from !~ /\.altinstructions/ &&
$from !~ /\.eh_frame/ &&
$from !~ /\.debug_/)) {
printf("Error: %s %s refers to %s\n", $object, $from, $line);
}
}
close(OBJDUMP);
}
printf("Done\n");
#Ignore generated files
maui_boot.h
pss_boot.h
trix_boot.h
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