mirror of
https://github.com/a52xq-dev/kernel.git
synced 2026-10-18 21:58:11 +07:00
Kbuild updates for v4.19
- verify depmod is installed before modules_install
- support build salt in case build ids must be unique between builds
- allow users to specify additional host compiler flags via HOST*FLAGS,
and rename internal variables to KBUILD_HOST*FLAGS
- update buildtar script to drop vax support, add arm64 support
- update builddeb script for better debarch support
- document the pit-fall of if_changed usage
- fix parallel build of UML with O= option
- make 'samples' target depend on headers_install to fix build errors
- remove deprecated host-progs variable
- add a new coccinelle script for refcount_t vs atomic_t check
- improve double-test coccinelle script
- misc cleanups and fixes
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Merge tag 'kbuild-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- verify depmod is installed before modules_install
- support build salt in case build ids must be unique between builds
- allow users to specify additional host compiler flags via HOST*FLAGS,
and rename internal variables to KBUILD_HOST*FLAGS
- update buildtar script to drop vax support, add arm64 support
- update builddeb script for better debarch support
- document the pit-fall of if_changed usage
- fix parallel build of UML with O= option
- make 'samples' target depend on headers_install to fix build errors
- remove deprecated host-progs variable
- add a new coccinelle script for refcount_t vs atomic_t check
- improve double-test coccinelle script
- misc cleanups and fixes
* tag 'kbuild-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (41 commits)
coccicheck: return proper error code on fail
Coccinelle: doubletest: reduce side effect false positives
kbuild: remove deprecated host-progs variable
kbuild: make samples really depend on headers_install
um: clean up archheaders recipe
kbuild: add %asm-generic to no-dot-config-targets
um: fix parallel building with O= option
scripts: Add Python 3 support to tracing/draw_functrace.py
builddeb: Add automatic support for sh{3,4}{,eb} architectures
builddeb: Add automatic support for riscv* architectures
builddeb: Add automatic support for m68k architecture
builddeb: Add automatic support for or1k architecture
builddeb: Add automatic support for sparc64 architecture
builddeb: Add automatic support for mips{,64}r6{,el} architectures
builddeb: Add automatic support for mips64el architecture
builddeb: Add automatic support for ppc64 and powerpcspe architectures
builddeb: Introduce functions to simplify kconfig tests in set_debarch
builddeb: Drop check for 32-bit s390
builddeb: Change architecture detection fallback to use dpkg-architecture
builddeb: Skip architecture detection when KBUILD_DEBARCH is set
...
This commit is contained in:
Linus Torvalds
commit
e026bcc561
51 changed files with 373 additions and 169 deletions
|
|
@ -50,6 +50,22 @@ LDFLAGS_MODULE
|
|||
--------------------------------------------------
|
||||
Additional options used for $(LD) when linking modules.
|
||||
|
||||
HOSTCFLAGS
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||||
--------------------------------------------------
|
||||
Additional flags to be passed to $(HOSTCC) when building host programs.
|
||||
|
||||
HOSTCXXFLAGS
|
||||
--------------------------------------------------
|
||||
Additional flags to be passed to $(HOSTCXX) when building host programs.
|
||||
|
||||
HOSTLDFLAGS
|
||||
--------------------------------------------------
|
||||
Additional flags to be passed when linking host programs.
|
||||
|
||||
HOSTLDLIBS
|
||||
--------------------------------------------------
|
||||
Additional libraries to link against when building host programs.
|
||||
|
||||
KBUILD_KCONFIG
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||||
--------------------------------------------------
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||||
Set the top-level Kconfig file to the value of this environment
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||||
|
|
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|||
|
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@ -661,7 +661,7 @@ Both possibilities are described in the following.
|
|||
|
||||
When compiling host programs, it is possible to set specific flags.
|
||||
The programs will always be compiled utilising $(HOSTCC) passed
|
||||
the options specified in $(HOSTCFLAGS).
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||||
the options specified in $(KBUILD_HOSTCFLAGS).
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||||
To set flags that will take effect for all host programs created
|
||||
in that Makefile, use the variable HOST_EXTRACFLAGS.
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||||
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||||
|
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@ -1105,6 +1105,12 @@ When kbuild executes, the following steps are followed (roughly):
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|||
target: source(s) FORCE
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||||
#WRONG!# $(call if_changed, ld/objcopy/gzip/...)
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||||
|
||||
Note: if_changed should not be used more than once per target.
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||||
It stores the executed command in a corresponding .cmd
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||||
file and multiple calls would result in overwrites and
|
||||
unwanted results when the target is up to date and only the
|
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tests on changed commands trigger execution of commands.
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|
||||
ld
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||||
Link target. Often, LDFLAGS_$@ is used to set specific options to ld.
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|
||||
|
|
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@ -35,7 +35,7 @@ binutils 2.20 ld -v
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flex 2.5.35 flex --version
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bison 2.0 bison --version
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util-linux 2.10o fdformat --version
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module-init-tools 0.9.10 depmod -V
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kmod 13 depmod -V
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e2fsprogs 1.41.4 e2fsck -V
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jfsutils 1.1.3 fsck.jfs -V
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||||
reiserfsprogs 3.6.3 reiserfsck -V
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||||
|
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@ -156,12 +156,6 @@ is not build with ``CONFIG_KALLSYMS`` and you have no way to rebuild and
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|||
reproduce the Oops with that option, then you can still decode that Oops
|
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with ksymoops.
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|
||||
Module-Init-Tools
|
||||
-----------------
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||||
|
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A new module loader is now in the kernel that requires ``module-init-tools``
|
||||
to use. It is backward compatible with the 2.4.x series kernels.
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|
||||
Mkinitrd
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||||
--------
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@ -371,16 +365,17 @@ Util-linux
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- <https://www.kernel.org/pub/linux/utils/util-linux/>
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||||
Kmod
|
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----
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||||
|
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- <https://www.kernel.org/pub/linux/utils/kernel/kmod/>
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- <https://git.kernel.org/pub/scm/utils/kernel/kmod/kmod.git>
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|
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Ksymoops
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||||
--------
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||||
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- <https://www.kernel.org/pub/linux/utils/kernel/ksymoops/v2.4/>
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|
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Module-Init-Tools
|
||||
-----------------
|
||||
|
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- <https://www.kernel.org/pub/linux/utils/kernel/module-init-tools/>
|
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|
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Mkinitrd
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--------
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|
|
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24
Makefile
24
Makefile
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@ -224,7 +224,7 @@ clean-targets := %clean mrproper cleandocs
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no-dot-config-targets := $(clean-targets) \
|
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cscope gtags TAGS tags help% %docs check% coccicheck \
|
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$(version_h) headers_% archheaders archscripts \
|
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kernelversion %src-pkg
|
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%asm-generic kernelversion %src-pkg
|
||||
|
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config-targets := 0
|
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mixed-targets := 0
|
||||
|
|
@ -359,11 +359,12 @@ HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null)
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|||
|
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HOSTCC = gcc
|
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HOSTCXX = g++
|
||||
HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \
|
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-fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS)
|
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HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS)
|
||||
HOSTLDFLAGS := $(HOST_LFS_LDFLAGS)
|
||||
HOST_LOADLIBES := $(HOST_LFS_LIBS)
|
||||
KBUILD_HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \
|
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-fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS) \
|
||||
$(HOSTCFLAGS)
|
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KBUILD_HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS)
|
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KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS)
|
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KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS)
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||||
|
||||
# Make variables (CC, etc...)
|
||||
AS = $(CROSS_COMPILE)as
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|
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@ -429,10 +430,10 @@ KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
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|||
LDFLAGS :=
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GCC_PLUGINS_CFLAGS :=
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|
||||
export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
|
||||
export CPP AR NM STRIP OBJCOPY OBJDUMP HOSTLDFLAGS HOST_LOADLIBES
|
||||
export ARCH SRCARCH CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC
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||||
export CPP AR NM STRIP OBJCOPY OBJDUMP KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS
|
||||
export MAKE LEX YACC AWK GENKSYMS INSTALLKERNEL PERL PYTHON PYTHON2 PYTHON3 UTS_MACHINE
|
||||
export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
|
||||
export HOSTCXX KBUILD_HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
|
||||
|
||||
export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
|
||||
export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
|
||||
|
|
@ -1009,9 +1010,10 @@ ifdef CONFIG_GDB_SCRIPTS
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|||
endif
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||||
+$(call if_changed,link-vmlinux)
|
||||
|
||||
# Build samples along the rest of the kernel
|
||||
# Build samples along the rest of the kernel. This needs headers_install.
|
||||
ifdef CONFIG_SAMPLES
|
||||
vmlinux-dirs += samples
|
||||
samples: headers_install
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||||
endif
|
||||
|
||||
# The actual objects are generated when descending,
|
||||
|
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@ -1116,7 +1118,7 @@ define filechk_version.h
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|||
echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
|
||||
endef
|
||||
|
||||
$(version_h): $(srctree)/Makefile FORCE
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||||
$(version_h): FORCE
|
||||
$(call filechk,version.h)
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||||
$(Q)rm -f $(old_version_h)
|
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|
||||
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|||
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@ -14,7 +14,7 @@ targets := vmlinux.gz vmlinux \
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tools/bootpzh bootloader bootpheader bootpzheader
|
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OBJSTRIP := $(obj)/tools/objstrip
|
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|
||||
HOSTCFLAGS := -Wall -I$(objtree)/usr/include
|
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KBUILD_HOSTCFLAGS := -Wall -I$(objtree)/usr/include
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BOOTCFLAGS += -I$(objtree)/$(obj) -I$(srctree)/$(obj)
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# SRM bootable image. Copy to offset 512 of a partition.
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|||
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@ -10,9 +10,6 @@
|
|||
#
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||||
# Copyright (C) 1995-2001 by Russell King
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||||
|
||||
# Ensure linker flags are correct
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||||
LDFLAGS :=
|
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|
||||
LDFLAGS_vmlinux :=-p --no-undefined -X --pic-veneer
|
||||
ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
|
||||
LDFLAGS_vmlinux += --be8
|
||||
|
|
|
|||
|
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@ -19,31 +19,6 @@ ifeq ($(CONFIG_PM_DEBUG),y)
|
|||
CFLAGS_pm.o += -DDEBUG
|
||||
endif
|
||||
|
||||
# Default sed regexp - multiline due to syntax constraints
|
||||
define sed-y
|
||||
"/^->/{s:->#\(.*\):/* \1 */:; \
|
||||
s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
|
||||
s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
|
||||
s:->::; p;}"
|
||||
endef
|
||||
|
||||
# Use filechk to avoid rebuilds when a header changes, but the resulting file
|
||||
# does not
|
||||
define filechk_offsets
|
||||
(set -e; \
|
||||
echo "#ifndef $2"; \
|
||||
echo "#define $2"; \
|
||||
echo "/*"; \
|
||||
echo " * DO NOT MODIFY."; \
|
||||
echo " *"; \
|
||||
echo " * This file was generated by Kbuild"; \
|
||||
echo " */"; \
|
||||
echo ""; \
|
||||
sed -ne $(sed-y); \
|
||||
echo ""; \
|
||||
echo "#endif" )
|
||||
endef
|
||||
|
||||
arch/arm/mach-at91/pm_data-offsets.s: arch/arm/mach-at91/pm_data-offsets.c
|
||||
$(call if_changed_dep,cc_s_c)
|
||||
|
||||
|
|
|
|||
|
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@ -22,7 +22,10 @@
|
|||
#include <linux/uts.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/elfnote.h>
|
||||
#include <linux/build-salt.h>
|
||||
|
||||
ELFNOTE_START(Linux, 0, "a")
|
||||
.long LINUX_VERSION_CODE
|
||||
ELFNOTE_END
|
||||
|
||||
BUILD_SALT
|
||||
|
|
|
|||
|
|
@ -19,7 +19,6 @@
|
|||
|
||||
KBUILD_DEFCONFIG := or1ksim_defconfig
|
||||
|
||||
LDFLAGS :=
|
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OBJCOPYFLAGS := -O binary -R .note -R .comment -S
|
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LDFLAGS_vmlinux :=
|
||||
LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
|
||||
|
|
|
|||
|
|
@ -5,6 +5,7 @@
|
|||
|
||||
#include <linux/uts.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/build-salt.h>
|
||||
|
||||
#define ASM_ELF_NOTE_BEGIN(name, flags, vendor, type) \
|
||||
.section name, flags; \
|
||||
|
|
@ -23,3 +24,5 @@
|
|||
ASM_ELF_NOTE_BEGIN(".note.kernel-version", "a", UTS_SYSNAME, 0)
|
||||
.long LINUX_VERSION_CODE
|
||||
ASM_ELF_NOTE_END
|
||||
|
||||
BUILD_SALT
|
||||
|
|
|
|||
|
|
@ -6,9 +6,8 @@ LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined
|
|||
$(obj)/purgatory.ro: $(obj)/trampoline.o FORCE
|
||||
$(call if_changed,ld)
|
||||
|
||||
CMD_BIN2C = $(objtree)/scripts/basic/bin2c
|
||||
quiet_cmd_bin2c = BIN2C $@
|
||||
cmd_bin2c = $(CMD_BIN2C) kexec_purgatory < $< > $@
|
||||
cmd_bin2c = $(objtree)/scripts/bin2c kexec_purgatory < $< > $@
|
||||
|
||||
$(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE
|
||||
$(call if_changed,bin2c)
|
||||
|
|
|
|||
|
|
@ -8,7 +8,6 @@
|
|||
# for more details.
|
||||
#
|
||||
|
||||
LDFLAGS :=
|
||||
OBJCOPYFLAGS := -O binary
|
||||
LDFLAGS_vmlinux :=
|
||||
ifeq ($(CONFIG_DYNAMIC_FTRACE),y)
|
||||
|
|
|
|||
|
|
@ -25,15 +25,15 @@ _dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)') \
|
|||
$(shell [ -d '$(kapi)' ] || mkdir -p '$(kapi)')
|
||||
|
||||
define filechk_syshdr
|
||||
$(CONFIG_SHELL) '$(systbl)' -H -a $(syshdr_abi_$(basetarget)) -f "$2"
|
||||
$(CONFIG_SHELL) '$(systbl)' -H -a $(syshdr_abi_$(basetarget)) -f "$2" < $<
|
||||
endef
|
||||
|
||||
define filechk_sysnr
|
||||
$(CONFIG_SHELL) '$(systbl)' -N -a $(sysnr_abi_$(basetarget))
|
||||
$(CONFIG_SHELL) '$(systbl)' -N -a $(sysnr_abi_$(basetarget)) < $<
|
||||
endef
|
||||
|
||||
define filechk_syscalls
|
||||
$(CONFIG_SHELL) '$(systbl)' -S
|
||||
$(CONFIG_SHELL) '$(systbl)' -S < $<
|
||||
endef
|
||||
|
||||
syshdr_abi_unistd_32 := common,32
|
||||
|
|
|
|||
|
|
@ -28,9 +28,8 @@ KBUILD_AFLAGS := $(filter-out -DCC_USING_EXPOLINE,$(KBUILD_AFLAGS))
|
|||
$(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE
|
||||
$(call if_changed,ld)
|
||||
|
||||
CMD_BIN2C = $(objtree)/scripts/basic/bin2c
|
||||
quiet_cmd_bin2c = BIN2C $@
|
||||
cmd_bin2c = $(CMD_BIN2C) kexec_purgatory < $< > $@
|
||||
cmd_bin2c = $(objtree)/scripts/bin2c kexec_purgatory < $< > $@
|
||||
|
||||
$(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE
|
||||
$(call if_changed,bin2c)
|
||||
|
|
|
|||
|
|
@ -116,14 +116,7 @@ endef
|
|||
KBUILD_KCONFIG := $(HOST_DIR)/um/Kconfig
|
||||
|
||||
archheaders:
|
||||
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
|
||||
kbuild-file=$(HOST_DIR)/include/asm/Kbuild \
|
||||
obj=$(HOST_DIR)/include/generated/asm
|
||||
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
|
||||
kbuild-file=$(HOST_DIR)/include/uapi/asm/Kbuild \
|
||||
obj=$(HOST_DIR)/include/generated/uapi/asm
|
||||
$(Q)$(MAKE) KBUILD_SRC= ARCH=$(HEADER_ARCH) archheaders
|
||||
|
||||
$(Q)$(MAKE) -f $(srctree)/Makefile ARCH=$(HEADER_ARCH) asm-generic archheaders
|
||||
|
||||
archprepare: include/generated/user_constants.h
|
||||
|
||||
|
|
@ -169,7 +162,7 @@ define filechk_gen-asm-offsets
|
|||
echo " *"; \
|
||||
echo " */"; \
|
||||
echo ""; \
|
||||
sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \
|
||||
sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}" < $<; \
|
||||
echo ""; )
|
||||
endef
|
||||
|
||||
|
|
|
|||
|
|
@ -25,10 +25,10 @@ LDFLAGS_vde.o := -r $(shell $(CC) $(CFLAGS) -print-file-name=libvdeplug.a)
|
|||
targets := pcap_kern.o pcap_user.o vde_kern.o vde_user.o
|
||||
|
||||
$(obj)/pcap.o: $(obj)/pcap_kern.o $(obj)/pcap_user.o
|
||||
$(LD) -r -dp -o $@ $^ $(LDFLAGS) $(LDFLAGS_pcap.o)
|
||||
$(LD) -r -dp -o $@ $^ $(ld_flags)
|
||||
|
||||
$(obj)/vde.o: $(obj)/vde_kern.o $(obj)/vde_user.o
|
||||
$(LD) -r -dp -o $@ $^ $(LDFLAGS) $(LDFLAGS_vde.o)
|
||||
$(LD) -r -dp -o $@ $^ $(ld_flags)
|
||||
|
||||
#XXX: The call below does not work because the flags are added before the
|
||||
# object name, so nothing from the library gets linked.
|
||||
|
|
|
|||
|
|
@ -13,8 +13,6 @@ KBUILD_CFLAGS += $(call cc-option,-m32)
|
|||
KBUILD_AFLAGS += $(call cc-option,-m32)
|
||||
LINK-y += $(call cc-option,-m32)
|
||||
|
||||
export LDFLAGS
|
||||
|
||||
LDS_EXTRA := -Ui386
|
||||
export LDS_EXTRA
|
||||
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@
|
|||
* Here we can supply some information useful to userland.
|
||||
*/
|
||||
|
||||
#include <linux/build-salt.h>
|
||||
#include <linux/uts.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/elfnote.h>
|
||||
|
|
@ -10,3 +11,5 @@
|
|||
ELFNOTE_START(Linux, 0, "a")
|
||||
.long LINUX_VERSION_CODE
|
||||
ELFNOTE_END
|
||||
|
||||
BUILD_SALT
|
||||
|
|
|
|||
|
|
@ -4,6 +4,7 @@
|
|||
* Here we can supply some information useful to userland.
|
||||
*/
|
||||
|
||||
#include <linux/build-salt.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/elfnote.h>
|
||||
|
||||
|
|
@ -14,6 +15,8 @@ ELFNOTE_START(Linux, 0, "a")
|
|||
.long LINUX_VERSION_CODE
|
||||
ELFNOTE_END
|
||||
|
||||
BUILD_SALT
|
||||
|
||||
#ifdef CONFIG_XEN
|
||||
/*
|
||||
* Add a special note telling glibc's dynamic linker a fake hardware
|
||||
|
|
|
|||
|
|
@ -28,9 +28,8 @@ $(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE
|
|||
|
||||
targets += kexec-purgatory.c
|
||||
|
||||
CMD_BIN2C = $(objtree)/scripts/basic/bin2c
|
||||
quiet_cmd_bin2c = BIN2C $@
|
||||
cmd_bin2c = $(CMD_BIN2C) kexec_purgatory < $< > $@
|
||||
cmd_bin2c = $(objtree)/scripts/bin2c kexec_purgatory < $< > $@
|
||||
|
||||
$(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE
|
||||
$(call if_changed,bin2c)
|
||||
|
|
|
|||
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Reference in a new issue