scripts/package/builddeb

   1 #!/bin/sh
   2 #
   3 # builddeb 1.3
   4 # Copyright 2003 Wichert Akkerman <wichert@wiggy.net>
   5 #
   6 # Simple script to generate a deb package for a Linux kernel. All the
   7 # complexity of what to do with a kernel after it is installed or removed
   8 # is left to other scripts and packages: they can install scripts in the
   9 # /etc/kernel/{pre,post}{inst,rm}.d/ directories (or an alternative location
  10 # specified in KDEB_HOOKDIR) that will be called on package install and
  11 # removal.
  12
  13 set -e
  14
  15 create_package() {
  16         local pname="$1" pdir="$2"
  17
  18         mkdir -m 755 -p "$pdir/DEBIAN"
  19         mkdir -p "$pdir/usr/share/doc/$pname"
  20         cp debian/copyright "$pdir/usr/share/doc/$pname/"
  21         cp debian/changelog "$pdir/usr/share/doc/$pname/changelog.Debian"
  22         gzip -9 "$pdir/usr/share/doc/$pname/changelog.Debian"
  23         sh -c "cd '$pdir'; find . -type f ! -path './DEBIAN/*' -printf '%P\0' \
  24                 | xargs -r0 md5sum > DEBIAN/md5sums"
  25
  26         # Fix ownership and permissions
  27         chown -R root:root "$pdir"
  28         chmod -R go-w "$pdir"
  29
  30         # Create the package
  31         dpkg-gencontrol $forcearch -Vkernel:debarch="${debarch}" -p$pname -P"$pdir"
  32         dpkg --build "$pdir" ..
  33 }
  34
  35 set_debarch() {
  36         # Attempt to find the correct Debian architecture
  37         case "$UTS_MACHINE" in
  38         i386|ia64|alpha)
  39                 debarch="$UTS_MACHINE" ;;
  40         x86_64)
  41                 debarch=amd64 ;;
  42         sparc*)
  43                 debarch=sparc ;;
  44         s390*)
  45                 debarch=s390$(grep -q CONFIG_64BIT=y $KCONFIG_CONFIG && echo x || true) ;;
  46         ppc*)
  47                 debarch=$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo ppc64el || echo powerpc) ;;
  48         parisc*)
  49                 debarch=hppa ;;
  50         mips*)
  51                 debarch=mips$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo el || true) ;;
  52         arm64)
  53                 debarch=arm64 ;;
  54         arm*)
  55                 if grep -q CONFIG_AEABI=y $KCONFIG_CONFIG; then
  56                     if grep -q CONFIG_VFP=y $KCONFIG_CONFIG; then
  57                         debarch=armhf
  58                     else
  59                         debarch=armel
  60                     fi
  61                 else
  62                     debarch=arm
  63                 fi
  64                 ;;
  65         *)
  66                 debarch=$(dpkg --print-architecture)
  67                 echo "" >&2
  68                 echo "** ** **  WARNING  ** ** **" >&2
  69                 echo "" >&2
  70                 echo "Your architecture doesn't have it's equivalent" >&2
  71                 echo "Debian userspace architecture defined!" >&2
  72                 echo "Falling back to using your current userspace instead!" >&2
  73                 echo "Please add support for $UTS_MACHINE to ${0} ..." >&2
  74                 echo "" >&2
  75         esac
  76         if [ -n "$KBUILD_DEBARCH" ] ; then
  77                 debarch="$KBUILD_DEBARCH"
  78         fi
  79         forcearch="-DArchitecture=$debarch"
  80
  81 }
  82
  83 # Some variables and settings used throughout the script
  84 version=$KERNELRELEASE
  85 revision=$(cat .version)
  86 if [ -n "$KDEB_PKGVERSION" ]; then
  87         packageversion=$KDEB_PKGVERSION
  88 else
  89         packageversion=$version-$revision
  90 fi
  91 sourcename=$KDEB_SOURCENAME
  92 tmpdir="$objtree/debian/tmp"
  93 fwdir="$objtree/debian/fwtmp"
  94 kernel_headers_dir="$objtree/debian/hdrtmp"
  95 libc_headers_dir="$objtree/debian/headertmp"
  96 dbg_dir="$objtree/debian/dbgtmp"
  97 packagename=linux-image-$version
  98 fwpackagename=linux-firmware-image-$version
  99 kernel_headers_packagename=linux-headers-$version
 100 libc_headers_packagename=linux-libc-dev
 101 dbg_packagename=$packagename-dbg
 102 debarch=
 103 forcearch=
 104 set_debarch
 105
 106 if [ "$ARCH" = "um" ] ; then
 107         packagename=user-mode-linux-$version
 108 fi
 109
 110 # Not all arches have the same installed path in debian
 111 # XXX: have each arch Makefile export a variable of the canonical image install
 112 # path instead
 113 case $ARCH in
 114 um)
 115         installed_image_path="usr/bin/linux-$version"
 116         ;;
 117 parisc|mips|powerpc)
 118         installed_image_path="boot/vmlinux-$version"
 119         ;;
 120 *)
 121         installed_image_path="boot/vmlinuz-$version"
 122 esac
 123
 124 BUILD_DEBUG="$(grep -s '^CONFIG_DEBUG_INFO=y' $KCONFIG_CONFIG || true)"
 125
 126 # Setup the directory structure
 127 rm -rf "$tmpdir" "$fwdir" "$kernel_headers_dir" "$libc_headers_dir" "$dbg_dir" $objtree/debian/files
 128 mkdir -m 755 -p "$tmpdir/DEBIAN"
 129 mkdir -p "$tmpdir/lib" "$tmpdir/boot"
 130 mkdir -p "$fwdir/lib/firmware/$version/"
 131 mkdir -p "$kernel_headers_dir/lib/modules/$version/"
 132
 133 # Build and install the kernel
 134 if [ "$ARCH" = "um" ] ; then
 135         mkdir -p "$tmpdir/usr/lib/uml/modules/$version" "$tmpdir/usr/bin" "$tmpdir/usr/share/doc/$packagename"
 136         $MAKE linux
 137         cp System.map "$tmpdir/usr/lib/uml/modules/$version/System.map"
 138         cp $KCONFIG_CONFIG "$tmpdir/usr/share/doc/$packagename/config"
 139         gzip "$tmpdir/usr/share/doc/$packagename/config"
 140 else
 141         cp System.map "$tmpdir/boot/System.map-$version"
 142         cp $KCONFIG_CONFIG "$tmpdir/boot/config-$version"
 143 fi
 144 # Not all arches include the boot path in KBUILD_IMAGE
 145 if [ -e $KBUILD_IMAGE ]; then
 146         cp $KBUILD_IMAGE "$tmpdir/$installed_image_path"
 147 else
 148         cp arch/$ARCH/boot/$KBUILD_IMAGE "$tmpdir/$installed_image_path"
 149 fi
 150
 151 if grep -q "^CONFIG_OF=y" $KCONFIG_CONFIG ; then
 152         # Only some architectures with OF support have this target
 153         if grep -q dtbs_install "${srctree}/arch/$SRCARCH/Makefile"; then
 154                 $MAKE KBUILD_SRC= INSTALL_DTBS_PATH="$tmpdir/usr/lib/$packagename" dtbs_install
 155         fi
 156 fi
 157
 158 if grep -q '^CONFIG_MODULES=y' $KCONFIG_CONFIG ; then
 159         INSTALL_MOD_PATH="$tmpdir" $MAKE KBUILD_SRC= modules_install
 160         rm -f "$tmpdir/lib/modules/$version/build"
 161         rm -f "$tmpdir/lib/modules/$version/source"
 162         if [ "$ARCH" = "um" ] ; then
 163                 mv "$tmpdir/lib/modules/$version"/* "$tmpdir/usr/lib/uml/modules/$version/"
 164                 rmdir "$tmpdir/lib/modules/$version"
 165         fi
 166         if [ -n "$BUILD_DEBUG" ] ; then
 167                 for module in $(find $tmpdir/lib/modules/ -name *.ko -printf '%P\n'); do
 168                         module=lib/modules/$module
 169                         mkdir -p $(dirname $dbg_dir/usr/lib/debug/$module)
 170                         # only keep debug symbols in the debug file
 171                         $OBJCOPY --only-keep-debug $tmpdir/$module $dbg_dir/usr/lib/debug/$module
 172                         # strip original module from debug symbols
 173                         $OBJCOPY --strip-debug $tmpdir/$module
 174                         # then add a link to those
 175                         $OBJCOPY --add-gnu-debuglink=$dbg_dir/usr/lib/debug/$module $tmpdir/$module
 176                 done
 177
 178                 # resign stripped modules
 179                 MODULE_SIG_ALL="$(grep -s '^CONFIG_MODULE_SIG_ALL=y' $KCONFIG_CONFIG || true)"
 180                 if [ -n "$MODULE_SIG_ALL" ]; then
 181                         INSTALL_MOD_PATH="$tmpdir" $MAKE KBUILD_SRC= modules_sign
 182                 fi
 183         fi
 184 fi
 185
 186 if [ "$ARCH" != "um" ]; then
 187         $MAKE headers_check KBUILD_SRC=
 188         $MAKE headers_install KBUILD_SRC= INSTALL_HDR_PATH="$libc_headers_dir/usr"
 189 fi
 190
 191 # Install the maintainer scripts
 192 # Note: hook scripts under /etc/kernel are also executed by official Debian
 193 # kernel packages, as well as kernel packages built using make-kpkg.
 194 # make-kpkg sets $INITRD to indicate whether an initramfs is wanted, and
 195 # so do we; recent versions of dracut and initramfs-tools will obey this.
 196 debhookdir=${KDEB_HOOKDIR:-/etc/kernel}
 197 if grep -q '^CONFIG_BLK_DEV_INITRD=y' $KCONFIG_CONFIG; then
 198         want_initrd=Yes
 199 else
 200         want_initrd=No
 201 fi
 202 for script in postinst postrm preinst prerm ; do
 203         mkdir -p "$tmpdir$debhookdir/$script.d"
 204         cat <<EOF > "$tmpdir/DEBIAN/$script"
 205 #!/bin/sh
 206
 207 set -e
 208
 209 # Pass maintainer script parameters to hook scripts
 210 export DEB_MAINT_PARAMS="\$*"
 211
 212 # Tell initramfs builder whether it's wanted
 213 export INITRD=$want_initrd
 214
 215 test -d $debhookdir/$script.d && run-parts --arg="$version" --arg="/$installed_image_path" $debhookdir/$script.d
 216 exit 0
 217 EOF
 218         chmod 755 "$tmpdir/DEBIAN/$script"
 219 done
 220
 221 # Try to determine maintainer and email values
 222 if [ -n "$DEBEMAIL" ]; then
 223        email=$DEBEMAIL
 224 elif [ -n "$EMAIL" ]; then
 225        email=$EMAIL
 226 else
 227        email=$(id -nu)@$(hostname -f 2>/dev/null || hostname)
 228 fi
 229 if [ -n "$DEBFULLNAME" ]; then
 230        name=$DEBFULLNAME
 231 elif [ -n "$NAME" ]; then
 232        name=$NAME
 233 else
 234        name="Anonymous"
 235 fi
 236 maintainer="$name <$email>"
 237
 238 # Try to determine distribution
 239 if [ -n "$KDEB_CHANGELOG_DIST" ]; then
 240         distribution=$KDEB_CHANGELOG_DIST
 241 elif distribution=$(lsb_release -cs 2>/dev/null) && [ -n "$distribution" ]; then
 242         : # nothing to do in this case
 243 else
 244         distribution="unstable"
 245         echo >&2 "Using default distribution of 'unstable' in the changelog"
 246         echo >&2 "Install lsb-release or set \$KDEB_CHANGELOG_DIST explicitly"
 247 fi
 248
 249 # Generate a simple changelog template
 250 cat <<EOF > debian/changelog
 251 $sourcename ($packageversion) $distribution; urgency=low
 252
 253   * Custom built Linux kernel.
 254
 255  -- $maintainer  $(date -R)
 256 EOF
 257
 258 # Generate copyright file
 259 cat <<EOF > debian/copyright
 260 This is a packacked upstream version of the Linux kernel.
 261
 262 The sources may be found at most Linux ftp sites, including:
 263 ftp://ftp.kernel.org/pub/linux/kernel
 264
 265 Copyright: 1991 - 2015 Linus Torvalds and others.
 266
 267 The git repository for mainline kernel development is at:
 268 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
 269
 270     This program is free software; you can redistribute it and/or modify
 271     it under the terms of the GNU General Public License as published by
 272     the Free Software Foundation; version 2 dated June, 1991.
 273
 274 On Debian GNU/Linux systems, the complete text of the GNU General Public
 275 License version 2 can be found in \`/usr/share/common-licenses/GPL-2'.
 276 EOF
 277
 278
 279 build_depends="bc, kmod, cpio "
 280
 281 # Generate a control file
 282 cat <<EOF > debian/control
 283 Source: $sourcename
 284 Section: kernel
 285 Priority: optional
 286 Maintainer: $maintainer
 287 Build-Depends: $build_depends
 288 Standards-Version: 3.8.4
 289 Homepage: http://www.kernel.org/
 290 EOF
 291
 292 if [ "$ARCH" = "um" ]; then
 293         cat <<EOF >> debian/control
 294
 295 Package: $packagename
 296 Provides: linux-image, linux-image-2.6, linux-modules-$version
 297 Architecture: any
 298 Description: User Mode Linux kernel, version $version
 299  User-mode Linux is a port of the Linux kernel to its own system call
 300  interface.  It provides a kind of virtual machine, which runs Linux
 301  as a user process under another Linux kernel.  This is useful for
 302  kernel development, sandboxes, jails, experimentation, and
 303  many other things.
 304  .
 305  This package contains the Linux kernel, modules and corresponding other
 306  files, version: $version.
 307 EOF
 308
 309 else
 310         cat <<EOF >> debian/control
 311
 312 Package: $packagename
 313 Provides: linux-image, linux-image-2.6, linux-modules-$version
 314 Suggests: $fwpackagename
 315 Architecture: any
 316 Description: Linux kernel, version $version
 317  This package contains the Linux kernel, modules and corresponding other
 318  files, version: $version.
 319 EOF
 320
 321 fi
 322
 323 # Build kernel header package
 324 (cd $srctree; find . -name Makefile\* -o -name Kconfig\* -o -name \*.pl) > "$objtree/debian/hdrsrcfiles"
 325 if grep -q '^CONFIG_STACK_VALIDATION=y' $KCONFIG_CONFIG ; then
 326         (cd $srctree; find tools/objtool -type f -executable) >> "$objtree/debian/hdrsrcfiles"
 327 fi
 328 (cd $srctree; find arch/*/include include scripts -type f) >> "$objtree/debian/hdrsrcfiles"
 329 (cd $srctree; find arch/$SRCARCH -name module.lds -o -name Kbuild.platforms -o -name Platform) >> "$objtree/debian/hdrsrcfiles"
 330 (cd $srctree; find $(find arch/$SRCARCH -name include -o -name scripts -type d) -type f) >> "$objtree/debian/hdrsrcfiles"
 331 (cd $objtree; find arch/$SRCARCH/include Module.symvers include scripts -type f) >> "$objtree/debian/hdrobjfiles"
 332 (cd $objtree; find scripts/gcc-plugins -name \*.so -o -name gcc-common.h) >> "$objtree/debian/hdrobjfiles"
 333 destdir=$kernel_headers_dir/usr/src/linux-headers-$version
 334 mkdir -p "$destdir"
 335 (cd $srctree; tar -c -f - -T -) < "$objtree/debian/hdrsrcfiles" | (cd $destdir; tar -xf -)
 336 (cd $objtree; tar -c -f - -T -) < "$objtree/debian/hdrobjfiles" | (cd $destdir; tar -xf -)
 337 (cd $objtree; cp $KCONFIG_CONFIG $destdir/.config) # copy .config manually to be where it's expected to be
 338 ln -sf "/usr/src/linux-headers-$version" "$kernel_headers_dir/lib/modules/$version/build"
 339 rm -f "$objtree/debian/hdrsrcfiles" "$objtree/debian/hdrobjfiles"
 340
 341 cat <<EOF >> debian/control
 342
 343 Package: $kernel_headers_packagename
 344 Provides: linux-headers, linux-headers-2.6
 345 Architecture: any
 346 Description: Linux kernel headers for $KERNELRELEASE on \${kernel:debarch}
 347  This package provides kernel header files for $KERNELRELEASE on \${kernel:debarch}
 348  .
 349  This is useful for people who need to build external modules
 350 EOF
 351
 352 # Do we have firmware? Move it out of the way and build it into a package.
 353 if [ -e "$tmpdir/lib/firmware" ]; then
 354         mv "$tmpdir/lib/firmware"/* "$fwdir/lib/firmware/$version/"
 355         rmdir "$tmpdir/lib/firmware"
 356
 357         cat <<EOF >> debian/control
 358
 359 Package: $fwpackagename
 360 Architecture: all
 361 Description: Linux kernel firmware, version $version
 362  This package contains firmware from the Linux kernel, version $version.
 363 EOF
 364
 365         create_package "$fwpackagename" "$fwdir"
 366 fi
 367
 368 cat <<EOF >> debian/control
 369
 370 Package: $libc_headers_packagename
 371 Section: devel
 372 Provides: linux-kernel-headers
 373 Architecture: any
 374 Description: Linux support headers for userspace development
 375  This package provides userspaces headers from the Linux kernel.  These headers
 376  are used by the installed headers for GNU glibc and other system libraries.
 377 EOF
 378
 379 if [ "$ARCH" != "um" ]; then
 380         create_package "$kernel_headers_packagename" "$kernel_headers_dir"
 381         create_package "$libc_headers_packagename" "$libc_headers_dir"
 382 fi
 383
 384 create_package "$packagename" "$tmpdir"
 385
 386 if [ -n "$BUILD_DEBUG" ] ; then
 387         # Build debug package
 388         # Different tools want the image in different locations
 389         # perf
 390         mkdir -p $dbg_dir/usr/lib/debug/lib/modules/$version/
 391         cp vmlinux $dbg_dir/usr/lib/debug/lib/modules/$version/
 392         # systemtap
 393         mkdir -p $dbg_dir/usr/lib/debug/boot/
 394         ln -s ../lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/boot/vmlinux-$version
 395         # kdump-tools
 396         ln -s lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/vmlinux-$version
 397
 398         cat <<EOF >> debian/control
 399
 400 Package: $dbg_packagename
 401 Section: debug
 402 Provides: linux-debug, linux-debug-$version
 403 Architecture: any
 404 Description: Linux kernel debugging symbols for $version
 405  This package will come in handy if you need to debug the kernel. It provides
 406  all the necessary debug symbols for the kernel and its modules.
 407 EOF
 408
 409         create_package "$dbg_packagename" "$dbg_dir"
 410 fi
 411
 412 if [ "x$1" = "xdeb-pkg" ]
 413 then
 414     cat <<EOF > debian/rules
 415 #!/usr/bin/make -f
 416
 417 build:
 418         \$(MAKE)
 419
 420 binary-arch:
 421         \$(MAKE) KDEB_SOURCENAME=${sourcename} KDEB_PKGVERSION=${packageversion} bindeb-pkg
 422
 423 clean:
 424         rm -rf debian/*tmp debian/files
 425         mv debian/ debian.backup # debian/ might be cleaned away
 426         \$(MAKE) clean
 427         mv debian.backup debian
 428
 429 binary: binary-arch
 430 EOF
 431         mv ${sourcename}.tar.gz ../${sourcename}_${version}.orig.tar.gz
 432         tar caf ../${sourcename}_${packageversion}.debian.tar.gz debian/{copyright,rules,changelog,control}
 433         dpkg-source -cdebian/control -ldebian/changelog --format="3.0 (custom)" --target-format="3.0 (quilt)" \
 434                 -b / ../${sourcename}_${version}.orig.tar.gz  ../${sourcename}_${packageversion}.debian.tar.gz
 435         mv ${sourcename}_${packageversion}*dsc ..
 436         dpkg-genchanges > ../${sourcename}_${packageversion}_${debarch}.changes
 437 else
 438         dpkg-genchanges -b > ../${sourcename}_${packageversion}_${debarch}.changes
 439 fi
 440
 441 exit 0