make-kpkg记录

$alt_rules_file = "/usr/share/kernel-package/ruleset/minimal.mk";

$main::Version    = '13.018+nmu2';

$rules_file     = "debian/rules";

my $alt_cmd = "make kpkg_version=$main::Version -f $alt_rules_file ";
$alt_cmd .= "debian";

my $command = "$rules_file ";

make-kpkg大流程

2条线：

alt_cmd
command


Known Targets are:
===============================================================================
|     Targets                      |   Automatically builds                   |
===============================================================================
|  clean                           |                                          |
|  buildpackage                    | Builds the whole package                 |
|* binary                          | Builds kernel_{source,headers,image,doc} |
|*      binary-indep               |                                          |
|            kernel_source         |                                          |
|            kernel_doc            |                                          |
|            kernel_manual         |                                          |
|*      binary-arch                |                                          |
|            kernel_headers        |                                          |
|            kernel_debug          |                                          |
|            kernel_image          | Builds build                             |
|                           build  |                                          |
| modules                          |                                          |
| modules_image                    |                                          |
| modules_config                   |                                          |
| modules_clean                    |                                          |
| configure                        | If you wish to edit files                |
|                           debian | generated by make config                 |
| debian                           | Creates ./debian dir                     |
===============================================================================

alt_cmd

make kpkg_version=13.018+nmu2 -f /usr/share/kernel-package/ruleset/minimal.mk debian
执行/usr/share/kernel-package/ruleset/minimal.mk的debian目标。
在此之前执行rmtree( ['debian'], 0, 1 );

minimal.mk

   37 # Where the package libs are stored
   38 LIBLOC     :=/usr/share/kernel-package
   39 
   40 define which_debdir
   41 DEBDIR=$(shell if test -f ./debian/ruleset/kernel_version.mk; then echo ./debian;     \
   42     ¦   ¦   ¦   ¦   ¦   ¦   ¦   ¦   ¦   ¦   ¦   ¦   ¦   ¦   ¦ else echo $(LIBLOC); fi)
   43 endef
   44 $(eval $(which_debdir))
   45 
   46 include $(DEBDIR)/ruleset/common/archvars.mk
   47 include $(DEBDIR)/ruleset/common/install_cmds.mk
   48 include $(DEBDIR)/ruleset/misc/defaults.mk
   49 include $(DEBDIR)/ruleset/misc/version_vars.mk
   50 include $(DEBDIR)/ruleset/misc/kernel_arch.mk
   51 include $(DEBDIR)/ruleset/misc/pkg_names.mk
   52 -include $(CONFLOC)
   53 include $(DEBDIR)/ruleset/misc/config.mk

加载头文件

   92 debian/stamp/conf/minimal_debian:
   93     $(REASON)
   94     @echo "This is kernel package version $(kpkg_version)."
   95     test -d debian             || mkdir debian
   96     @test -d debian/stamp      || mkdir debian/stamp
   97     @test -d debian/stamp/conf || mkdir debian/stamp/conf
   98     test ! -e stamp-building || rm -f stamp-building
   99     install -p -m 755 $(LIBLOC)/rules debian/rules
  100     for file in $(DEBIAN_FILES); do                                      \
  101     ¦   ¦   cp -f  $(LIBLOC)/$$file ./debian/;                               \
  102     ¦   done
  103     for dir  in $(DEBIAN_DIRS);  do                                      \
  104     ¦   ¦ cp -af $(LIBLOC)/$$dir  ./debian/;                                 \
  105     ¦   done
  106     test -f debian/control || sed         -e 's/=V/$(version)/g'  \
  107     ¦   ¦   ¦   -e 's/=D/$(debian)/g'         -e 's/=A/$(DEB_HOST_ARCH)/g'  \
  108         -e 's/=SA/$(INT_SUBARCH)/g'  \
  109         -e 's/=I/$(initrddep)/g'                    \
  110         -e 's/=CV/$(VERSION).$(PATCHLEVEL)/g'               \
  111         -e 's/=M/$(maintainer) <$(email)>/g'                \
  112         -e 's/=ST/$(INT_STEM)/g'      -e 's/=B/$(KERNEL_ARCH)/g'    \
  113     ¦   ¦   ¦   -e 's/=R/$(RAMFS_DEPS)/g'    $(CONTROL) > debian/control
  114     test -f debian/changelog ||  sed -e 's/=V/$(version)/g'       \
  115     ¦   ¦   -e 's/=D/$(debian)/g'        -e 's/=A/$(DEB_HOST_ARCH)/g'       \
  116     ¦   ¦   -e 's/=ST/$(INT_STEM)/g'     -e 's/=B/$(KERNEL_ARCH)/g'         \
  117     ¦   ¦   -e 's/=M/$(maintainer) <$(email)>/g'                            \
  118     ¦   ¦   ¦$(LIBLOC)/changelog > debian/changelog

  141     chmod 0644 debian/control debian/changelog
  142     test -d ./debian/stamp || mkdir debian/stamp
  143     $(MAKE) -f debian/rules debian/stamp/conf/kernel-conf
  144     $(MAKE) -f debian/rules debian/stamp/conf/full-changelog
  145     echo done > $@
  146 
  147 debian: debian/stamp/conf/minimal_debian

第一部分：生成./debian目录以及目录下的内容(rules等），修改debian/control、changelog文件内容。最后调用 make -f debian/rules，
目标为debian/stamp/conf/kernel-conf、debian/stamp/conf/full-changelog

debian/stamp/conf/kernel-conf

  195     @test -d debian/stamp      || mkdir debian/stamp
  196     @test -d debian/stamp/conf || mkdir debian/stamp/conf

DEB_HOST_ARCH_OS = $(dpkg-architecture  -qDEB_HOST_ARCH_OS) = linux
  207 ifeq ($(DEB_HOST_ARCH_OS), linux)                                                                                                                                                                               
  208     $(MAKE) $(EXTRAV_ARG) $(FLAV_ARG) $(CROSS_ARG) ARCH=$(KERNEL_ARCH) \
  209     ¦   ¦   ¦   ¦   $(config_target);
  210   ifeq ($(shell if   [ $(VERSION) -gt 2 ]; then                \
  211         ¦  echo new;                           \
  212         elif [ $(VERSION) -ge 2 ] && [ $(PATCHLEVEL) -ge 5 ]; then \
  213         ¦ echo new;                        \
  214         fi),)
  215     +$(MAKE) $(EXTRAV_ARG) $(FLAV_ARG) $(CROSS_ARG) \
  216                 ¦ARCH=$(KERNEL_ARCH) $(fast_dep) dep
  217     $(MAKE) $(EXTRAV_ARG) $(FLAV_ARG) $(CROSS_ARG) ARCH=$(KERNEL_ARCH) clean
  218   else
  219     ifeq ($(strip $(MAKING_VIRTUAL_IMAGE)),)
  220     $(MAKE) $(EXTRAV_ARG) $(FLAV_ARG) $(CROSS_ARG) ARCH=$(KERNEL_ARCH) prepare
  221     endif
  222   endif
  223 else

$(MAKE) $(EXTRAV_ARG) $(FLAV_ARG) $(CROSS_ARG) ARCH=$(KERNEL_ARCH) $(config_target)
只看最重要的参数$(config_target)，这个默认值为oldconfig，help信息的解释：Change the type of configure done from the default oldconfig.。简单理解就是make oldconfig，对内核做配置。
判断${VERSION}，这里的VERSION取自kernel的Makefile，目前的值是5，执行：
make dep; make clean; 或者 make prepare;

debian/stamp/conf/full-changelog

  231 debian/control debian/changelog debian/rules debian/stamp/conf/full-changelog:
  232     $(REASON)                                                                                                                                                                                                   
  233     @test -f $(LIBLOC)/rules   || echo Error: Could not find $(LIBLOC)/rules
  234     @test -f $(LIBLOC)/rules   || exit 4
  235     @test -d debian/stamp      || mkdir debian/stamp
  236     @test -d debian/stamp/conf || mkdir debian/stamp/conf
  237     for file in $(DEBIAN_FILES); do             \
  238     ¦   ¦cp -f  $(LIBLOC)/$$file ./debian/;         \
  239     done
  240     for dir  in $(DEBIAN_DIRS); do              \
  241     ¦  cp -af $(LIBLOC)/$$dir  ./debian/;               \
  242     done
  243     install -p -m 755 $(LIBLOC)/rules debian/rules
  244     sed         -e 's/=V/$(KERNELRELEASE)/g'  \
  245     ¦   ¦   ¦   -e 's/=D/$(debian)/g'         -e 's/=A/$(DEB_HOST_ARCH)/g'  \
  246         -e 's/=SA/$(INT_SUBARCH)/g'  \
  247         -e 's/=I/$(initrddep)/g'                    \
  248         -e 's/=CV/$(VERSION).$(PATCHLEVEL)/g'               \
  249         -e 's/=M/$(maintainer) <$(email)>/g'                \
  250         -e 's/=ST/$(INT_STEM)/g'      -e 's/=B/$(KERNEL_ARCH)/g'    \
  251     ¦   ¦   ¦   -e 's/=R/$(RAMFS_DEPS)/g'  $(CONTROL) > debian/control
  252     sed -e 's/=V/$(KERNELRELEASE)/g' -e 's/=D/$(debian)/g'        \
  253     ¦   -e 's/=A/$(DEB_HOST_ARCH)/g' -e 's/=M/$(maintainer) <$(email)>/g' \
  254     ¦   -e 's/=ST/$(INT_STEM)/g'     -e 's/=B/$(KERNEL_ARCH)/g'       \
  255         $(LIBLOC)/changelog > debian/changelog
  256 ifneq (,$(strip $(KPKG_OVERLAY_DIR)))
  257 +-- 20 行: test ! -d $(strip $(KPKG_OVERLAY_DIR))  ||                          \--------------------------------------------------------------------------------------------------------------------------------
  277 endif
  278     chmod 0644 debian/control debian/changelog
  279     $(MAKE) -f debian/rules debian/stamp/conf/kernel-conf
  280     @echo done > debian/stamp/conf/full-changelog

这个不少步骤都重复了，主要是构造./debbian目录，填充debian/control、changelog文件，然后再调用(MAKE) -f debian/rules debian/stamp/conf/kernel-conf，这个上面说过了。

小结：alt_cmd构造./debian目录，并且调用 make oldconfig;make dep; make clean; 或者 make prepare;实测在当前内核下，只有prepare这个，所以alt_cmd执行的就是make oldconfig；make prepare; prepare是内核在开始编译之前，需要做的事儿。

包名定义

  164 ifneq ($(strip $(KPKG_STEM)),)
  165 INT_STEM := $(KPKG_STEM)
  166 else
  167 INT_STEM := $(DEB_HOST_ARCH_OS)                                                                                                                                                                                 
  168 endif

INT_STEM 如果make-kpkg传入参数 stem=?，则直接赋值；否则等于DEB_HOST_ARCH_OS。

export DEB_HOST_ARCH_OS    := $(shell $(DPKG_ARCH) $(ha) -qDEB_HOST_ARCH_OS
DPKG_ARCH := dpkg-architecture

所以这里INT_STRM=linux

   70   TEST         :=$(call doit,$(MAKE) $(CROSS_ARG) $(K_ARG) --no-print-directory \
   71     ¦   ¦   ¦   ¦  -sf $(DEBDIR)/ruleset/kernel_version.mk debian_VERSION       \
   72     ¦   ¦   ¦   ¦   2>/dev/null )
   73   VERSION      :=$(call doit,$(MAKE) $(CROSS_ARG) $(K_ARG) --no-print-directory \
   74     ¦   ¦   ¦   ¦  -sf $(DEBDIR)/ruleset/kernel_version.mk debian_VERSION       \
   75     ¦   ¦   ¦   ¦   2>/dev/null | tail -n 1)
   76   PATCHLEVEL   :=$(call doit,$(MAKE) $(CROSS_ARG) $(K_ARG) --no-print-directory \
   77     ¦   ¦   ¦   ¦  -sf $(DEBDIR)/ruleset/kernel_version.mk debian_PATCHLEVEL    \
   78     ¦   ¦   ¦   ¦   2>/dev/null | tail -n 1)
   79   SUBLEVEL     :=$(call doit,$(MAKE) $(CROSS_ARG) $(K_ARG) --no-print-directory \
   80     ¦   ¦   ¦   ¦  -sf $(DEBDIR)/ruleset/kernel_version.mk debian_SUBLEVEL      \
   81     ¦   ¦   ¦   ¦   2>/dev/null | tail -n 1)
   82   EXTRA_VERSION:=$(call doit,$(MAKE) $(CROSS_ARG) $(K_ARG) --no-print-directory \
   83     ¦   ¦   ¦   ¦  -sf $(DEBDIR)/ruleset/kernel_version.mk debian_EXTRAVERSION  \
   84     ¦   ¦   ¦   ¦   2>/dev/null | tail -n 1)
   85   LOCALVERSION :=$(call doit,$(MAKE) $(CROSS_ARG) $(K_ARG) --no-print-directory \
   86     ¦   ¦   ¦   ¦  -sf $(DEBDIR)/ruleset/kernel_version.mk debian_LOCALVERSION  \
   87     ¦   ¦   ¦   ¦   2>/dev/null | tail -n 1)

  133 ifneq ($(strip $(APPEND_TO_VERSION)),)                                                                                                                                                                          
  134 iatv := $(strip $(APPEND_TO_VERSION))
  135 EXTRAV_ARG := EXTRAVERSION=${EXTRA_VERSION}${iatv}
  136 else
  137 iatv :=
  138 EXTRAV_ARG :=
  139 endif

   361  --append_to_version foo an additional kernel sub-version. ([-a-z.+0-9])
   362     ¦   ¦   ¦   ¦   ¦   ¦Does not require editing the kernel Makefile
   363     ¦   ¦   ¦   ¦   ¦   ¦over rides env var APPEND_TO_VERSION.                                                                                                                                                 
   364     ¦   ¦   ¦   ¦   ¦   ¦requires a make-kpkg clean
    if ($append_to_version) {
      $alt_cmd .= " APPEND_TO_VERSION=$append_to_version ";
    }

  155 version = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)$(iatv)$(LOCALVERSION)                                                                                                                             
  181 KERNELRELEASE = $(strip $(call doit,if [ -f include/config/kernel.release ]; then \
  182     ¦   ¦   ¦   ¦   ¦   ¦  cat include/config/kernel.release 2> /dev/null;\
  183     ¦   ¦   ¦   ¦   ¦   elif [ -f .kernelrelease ]; then                  \
  184     ¦   ¦   ¦   ¦   ¦   ¦  cat .kernelrelease 2> /dev/null ;              \
  185     ¦   ¦   ¦   ¦   ¦   else                                              \
  186     ¦   ¦   ¦   ¦   ¦   ¦ echo "$(version)";                              \
  187     ¦   ¦   ¦   ¦   ¦  fi;))

KERNELRELEASE的值，先看include/config/kernel.release，没有了再看.kernelrelease，如果都没有，则直接等于version。
TEST VERSION PATCHLEVEL SUBLEVEL EXTRA_VERSION LOCALVERSION这些变量都来自kernel的Makefile：

     1 # SPDX-License-Identifier: GPL-2.0                                                                                                                                                                             
     2 VERSION = 5
     3 PATCHLEVEL = 4
     4 SUBLEVEL = 232
     5 EXTRAVERSION =
     6 NAME = Kleptomaniac Octopus

最简单的情况 KERNELRELEASE = 5.4.232。

   861   if ($arch) {
   862     $command .= " KPKG_ARCH=$arch ";                                                                                                                                                                           
   863     $alt_cmd .= " KPKG_ARCH=$arch  ";
   864   }

   165 =item B<--arch> foo                                                                                                                                                                                            
   166 
   167 =over 2
   168 
   169 Sets the architecture. This is mostly useful when cross compiling.

  export DEB_HOST_ARCH_CPU   := $(shell $(DPKG_ARCH) $(ha) -qDEB_HOST_ARCH_CPU
  export DEB_HOST_GNU_CPU    := $(shell $(DPKG_ARCH) $(ha) -qDEB_HOST_GNU_CPU) 

  113 ifneq ($(strip $(KPKG_ARCH)),)
  114   architecture:=$(KPKG_ARCH)
  115 else
  116   #architecture:=$(shell CC=$(HOSTCC) dpkg --print-gnu-build-architecture)
  117   #architecture:=$(DEB_HOST_ARCH)
  118   ifeq (,$(DEB_HOST_ARCH_CPU))
  119     architecture:=$(DEB_HOST_GNU_CPU)
  120   else
  121     architecture:=$(DEB_HOST_ARCH_CPU)
  122   endif
  123 endif

zhangsong@zhangsong-ThinkPad-W541:~/work/about_kernel_any/focal$ dpkg-architecture -qDEB_HOST_ARCH_CPU
amd64
zhangsong@zhangsong-ThinkPad-W541:~/work/about_kernel_any/focal$ dpkg-architecture -qDEB_HOST_GNU_CPU
x86_64
zhangsong@zhangsong-ThinkPad-W541:~/work/about_kernel_any/focal$

从这里看出，architecture最优先是用户输入，其次是从设备上获取，以我的及其为例，优先是amd64，其次是x86_64。

   183 =item B<--subarch> foo                                                                                                                                                                                         
   184 
   185 =over 2
   186 
   187 Some architectures (the Alpha, and the m68k) require a different
   188 kernel for each subarchitecture. This option provides a way of
   189 specifying it as an argument to make-kpkg. Please note that additional
   190 support for subarchitectures may be required in the kernel sources to
   191 actually make this do anything.

   873   if ($subarch) {                                                                                                                                                                                              
   874     $command .= " KPKG_SUBARCH=$subarch ";
   875     $alt_cmd .= " KPKG_SUBARCH=$subarch ";
   876   }

   46 ifneq ($(strip $(ARCH_IN_NAME)),)
   47   ifneq ($(strip $(KPKG_SUBARCH)),)
   48     INT_SUBARCH := -$(KPKG_SUBARCH)
   49   endif
   50 endif

这个INT_SUBARCH代表了cpu，可以是传入的参数，或者是类似xen i386 i486 i586 i686的。

   40 KERNEL_ARCH:=$(architecture)
   41 ifeq ($(architecture), amd64)
   42   KERNEL_ARCH:=x86_64
   43 endif
   44 ifeq ($(architecture), mipsel)
   45   KERNEL_ARCH:=mips
   46 endif
   47 ifeq ($(architecture), s390x)
   48   KERNEL_ARCH:=s390
   49 endif
   50 
   51 ifneq (,$(filter mips64%,$(KPKG_SUBARCH)))
   52   KERNEL_ARCH = mips64
   53 endif
   54 ifneq (,$(filter %-64,$(KPKG_SUBARCH)))
   55   KERNEL_ARCH = mips64
   56 endif
   57 
   58 ifeq ($(strip $(architecture)),arm64)
   59   KERNEL_ARCH := arm64
   60 endif
   61 
   62 ifeq ($(strip $(architecture)),armeb)
   63   KERNEL_ARCH := arm
   64 endif
   65 
   66 ifeq ($(strip $(architecture)),armhf)
   67   KERNEL_ARCH := arm
   68 endif
   69 
   70 ifeq ($(strip $(architecture)),hppa)
   71   KERNEL_ARCH := parisc
   72 endif

   52 # The name of the packages
   53 s_package  = $(INT_STEM)-source-$(KERNELRELEASE)
   54 h_package  = $(INT_STEM)-headers-$(KERNELRELEASE)$(INT_SUBARCH)
   55 ifeq ($(strip $(KERNEL_ARCH)),um)
   56     i_package  = $(INT_STEM)-uml-$(KERNELRELEASE)$(INT_SUBARCH)
   57     b_package  = $(INT_STEM)-uml-$(KERNELRELEASE)$(INT_SUBARCH)-dbg
   58 else
   59     i_package  = $(INT_STEM)-image-$(KERNELRELEASE)$(INT_SUBARCH)
   60     b_package  = $(INT_STEM)-image-$(KERNELRELEASE)$(INT_SUBARCH)-dbg
   61 endif
   62 d_package  = $(INT_STEM)-doc-$(KERNELRELEASE)
   63 m_package  = $(INT_STEM)-manual-$(KERNELRELEASE)

最后得到包名：

s_package = linux-source-5.4.232
h_package = linux-headers-5.4.232（i386）
i_package = linux-image-5.4.232（i386）
b_package = linux-image-5.4.232（i386）-dbg
d_package = linux-doc-5.4.232
m_package = linux-manual-5.4.232

command

debian/rules $Target

 Known Targets are:
===============================================================================
|     Targets                      |   Automatically builds                   |
===============================================================================
|  clean                           |                                          |
|  buildpackage                    | Builds the whole package                 |
|* binary                          | Builds kernel_{source,headers,image,doc} |
|*      binary-indep               |                                          |
|            kernel_source         |                                          |
|            kernel_doc            |                                          |
|            kernel_manual         |                                          |
|*      binary-arch                |                                          |
|            kernel_headers        |                                          |
|            kernel_debug          |                                          |
|            kernel_image          | Builds build                             |
|                           build  |                                          |
| modules                          |                                          |
| modules_image                    |                                          |
| modules_config                   |                                          |
| modules_clean                    |                                          |
| configure                        | If you wish to edit files                |
|                           debian | generated by make config                 |
| debian                           | Creates ./debian dir                     |
===============================================================================

就是 ./debian/rules，跟上targets（见上面的表格），看2个target。
PS:这里尝试过从‘根’target去分析，但是整个体系非常庞大，放弃了；从最小/最关键的target进行分析。

kernel_image

i_package = linux-image-5.4.232（i386）#见上面

  104 linux-image   linux_image   kernel-image   kernel_image:   debian/stamp/build/kernel                                                                                                                            
  105     $(eval $(deb_rule))
  106     $(root_run_command)     debian/stamp/binary/pre-$(i_package)

再往下不再这样分析，直接把结果列出来：

  1 1:====== making target debian/stamp/conf/minimal_debian [new prereqs: ]======                         
  2 29:====== making target debian/stamp/conf/kernel-conf [new prereqs: ]======                                                                                                                                       
  3 48:====== making target debian/stamp/conf/full-changelog [new prereqs: ]======                        
  4 75:====== making target debian/stamp/conf/vars [new prereqs: ]======                                  
  5 77:====== making target debian/stamp/build/kernel [new prereqs: vars]======                           
  6 3197:====== making target debian/stamp/install/linux-image-5.4.232+ [new prereqs: ]======             
  7 3345:====== making target debian/stamp/binary/pre-linux-image-5.4.232+ [new prereqs: linux-image-5.4.232+]======
  8 3350:====== making target debian/stamp/binary/linux-image-5.4.232+ [new prereqs: ]======

这里编译内核：

294 debian/stamp/build/kernel: debian/stamp/conf/vars
  323 ifeq ($(DEB_HOST_ARCH_OS), linux)
  324     $(restore_upstream_debianization)
  325   ifeq ($(strip $(USE_KBUILD)),yes)
  326     $(MAKE) $(do_parallel) $(EXTRAV_ARG) $(FLAV_ARG) ARCH=$(KERNEL_ARCH) \
  327             ¦   $(CROSS_ARG) $(KPKG_KBUILD_DEFAULT_TARGET)
  328   else
  329     $(MAKE) $(do_parallel) $(EXTRAV_ARG) $(FLAV_ARG) ARCH=$(KERNEL_ARCH) \
  330             ¦   $(CROSS_ARG) $(target)
  331     ifneq ($(strip $(shell grep -E '^[^\#]*CONFIG_MODULES[^_]' $(CONFIG_FILE))),)
  332     $(MAKE) $(do_parallel) $(EXTRAV_ARG) $(FLAV_ARG) ARCH=$(KERNEL_ARCH) \
  333             ¦   $(CROSS_ARG) modules
  334     endif
  335   endif
  336   ifneq ($(strip $(shell grep -E ^[^\#]*CONFIG_LGUEST $(CONFIG_FILE))),)
  337     ifeq ($(LGUEST_SUBDIR),)
  338     $(error Cannot find lguest tools)
  339     endif
  340     $(MAKE) $(do_parallel) $(EXTRAV_ARG) $(FLAV_ARG) ARCH=$(KERNEL_ARCH) \
  341             ¦   $(CROSS_ARG) -C $(LGUEST_SUBDIR)
  342   endif
  343 else

这里将所有的东西安装到 ${SRCTOP}/debian/${package}目录中

 debian/stamp/install/$(i_package):
....
 代码太长，下面看效果～
....
zhangsong@zhangsong-ThinkPad-W541:~/work/about_kernel_any/focal/debian/linux-image-5.4.232+$ tree -L 2
.
├── boot
│   ├── config-5.4.232+
│   ├── System.map-5.4.232+
│   └── vmlinuz-5.4.232+
├── DEBIAN
│   ├── config
│   ├── control
│   ├── md5sums
│   ├── postinst
│   ├── postrm
│   ├── preinst
│   ├── prerm
│   └── templates
├── etc
│   └── kernel
├── lib
│   └── modules
└── usr
    ├── lib
    └── share

这里打包deb：

  238 debian/stamp/binary/$(i_package):
...
  309     sed -e 's/=V/$(KERNELRELEASE)/g'    -e 's/=IB/$(link_in_boot)/g'    \
  310     ¦   -e 's/=ST/$(INT_STEM)/g'  -e 's/=R/$(reverse_symlink)/g' \
  311     ¦   ¦   -e 's/=KPV/$(kpkg_version)/g'                       \
  312     ¦   -e 's/=K/$(kimage)/g'       \
  313     ¦   -e 's/=I/$(INITRD)/g'     -e 's,=D,$(IMAGEDIR),g'        \
  314     ¦   -e 's/=MD/$(initrddep)/g'                    \                                                                                                                                                          
  315     ¦   -e 's@=MK@$(initrdcmd)@g' -e 's@=A@$(DEB_HOST_ARCH)@g'   \
  316     ¦   -e 's@=M@$(MKIMAGE)@g'    -e 's@=B@$(KERNEL_ARCH)@g'     \
  317     ¦   -e 's/=S/$(no_symlink)/g' -e 's/=OF/$(AM_OFFICIAL)/g'    \
  318     ¦ $(DEBDIR)/pkg/virtual/um/postinst > $(TMPTOP)/DEBIAN/postinst
  319     chmod 755 $(TMPTOP)/DEBIAN/postinst
  320     sed -e 's/=V/$(KERNELRELEASE)/g'    -e 's/=IB/$(link_in_boot)/g'    \
  321     ¦   -e 's/=ST/$(INT_STEM)/g'  -e 's/=R/$(reverse_symlink)/g' \
  322     ¦   ¦   -e 's/=KPV/$(kpkg_version)/g'                       \
  323     ¦   -e 's/=K/$(kimage)/g'            \
  324     ¦   -e 's/=I/$(INITRD)/g'     -e 's,=D,$(IMAGEDIR),g'        \
  325     ¦   -e 's/=MD/$(initrddep)/g'                    \
  326     ¦   -e 's@=MK@$(initrdcmd)@g' -e 's@=A@$(DEB_HOST_ARCH)@g'   \
  327     ¦   -e 's@=M@$(MKIMAGE)@g'    -e 's/=OF/$(AM_OFFICIAL)/g'    \
  328     ¦   -e 's/=S/$(no_symlink)/g' -e 's@=B@$(KERNEL_ARCH)@g'     \
  329     ¦ $(DEBDIR)/pkg/virtual/um/prerm > $(TMPTOP)/DEBIAN/prerm
  330     chmod 755 $(TMPTOP)/DEBIAN/prerm
...
  335     dpkg-gencontrol -DArchitecture=$(GENCONTROL_ARCH) -isp       \
  336             -p$(package) -P$(TMPTOP)/
  337     $(create_md5sum)           $(TMPTOP)
  338     chmod -R og=rX             $(TMPTOP)
  339     test ! -e $(kimagedest)        || chmod og-rx $(kimagedest)
  340     test ! -e $(TMPTOP)/$(IMAGEDIR)/System.map-$(KERNELRELEASE)  || \
  341     ¦   ¦  chmod og-rx $(TMPTOP)/$(IMAGEDIR)/System.map-$(KERNELRELEASE) $(kimagedest)
  342     chown -R root:root         $(TMPTOP)
  343     dpkg --build               $(TMPTOP) $(DEB_DEST)

至此 deb包出来了 dpkg --build $(TMPTOP) $(DEB_DEST)展开就是
dpkg --build $(SRCTOP)/debian/$(package) DEB_DEST ?= ..

这里生成的deb名称张这样：linux-image-5.4.232+_5.4.232+-10.00.Custom_amd64.deb linux-image-5.4.232+_1.0.custom_amd64.deb linux-image-5.4.232+_1.0.zhangsong_amd64.deb，但是control中Package=linux-image-5.4.232+；探索发现包名后面的2部分分别为 revision和Architecture。

buildpackage

最终展开

DEB_BUILD_OPTIONS="$(SERIAL_BUILD_OPTIONS)" CONCURRENCY_LEVEL=1 \
dpkg-buildpackage $(strip $(int_root_cmd)) $(strip $(int_us))  $(strip $(int_uc)) \
 -j1 -k"$(pgp)"  -m"$(maintainer) <$(email)>"

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