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="$2"
  17
  18         cp debian/copyright "$pdir/usr/share/doc/$pname/"
  19         cp debian/changelog "$pdir/usr/share/doc/$pname/changelog.Debian"
  20         gzip -9 "$pdir/usr/share/doc/$pname/changelog.Debian"
  21         sh -c "cd '$pdir'; find . -type f ! -path './DEBIAN/*' -printf '%P\0' \
  22                 | xargs -r0 md5sum > DEBIAN/md5sums"
  23
  24         # Fix ownership and permissions
  25         chown -R root:root "$pdir"
  26         chmod -R go-w "$pdir"
  27
  28         # Attempt to find the correct Debian architecture
  29         local forcearch="" debarch=""
  30         case "$UTS_MACHINE" in
  31         i386|ia64|alpha)
  32                 debarch="$UTS_MACHINE" ;;
  33         x86_64)
  34                 debarch=amd64 ;;
  35         sparc*)
  36                 debarch=sparc ;;
  37         s390*)
  38                 debarch=s390$(grep -q CONFIG_64BIT=y $KCONFIG_CONFIG && echo x || true) ;;
  39         ppc*)
  40                 debarch=$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo ppc64el || echo powerpc) ;;
  41         parisc*)
  42                 debarch=hppa ;;
  43         mips*)
  44                 debarch=mips$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo el || true) ;;
  45         arm64)
  46                 debarch=arm64 ;;
  47         arm*)
  48                 debarch=arm$(grep -q CONFIG_AEABI=y $KCONFIG_CONFIG && echo el || true) ;;
  49         *)
  50                 echo "" >&2
  51                 echo "** ** **  WARNING  ** ** **" >&2
  52                 echo "" >&2
  53                 echo "Your architecture doesn't have it's equivalent" >&2
  54                 echo "Debian userspace architecture defined!" >&2
  55                 echo "Falling back to using your current userspace instead!" >&2
  56                 echo "Please add support for $UTS_MACHINE to ${0} ..." >&2
  57                 echo "" >&2
  58         esac
  59         if [ -n "$KBUILD_DEBARCH" ] ; then
  60                 debarch="$KBUILD_DEBARCH"
  61         fi
  62         if [ -n "$debarch" ] ; then
  63                 forcearch="-DArchitecture=$debarch"
  64         fi
  65
  66         # Create the package
  67         dpkg-gencontrol $forcearch -Vkernel:debarch="${debarch:-$(dpkg --print-architecture)}" -p$pname -P"$pdir"
  68         dpkg --build "$pdir" ..
  69 }
  70
  71 # Some variables and settings used throughout the script
  72 version=$KERNELRELEASE
  73 revision=$(cat .version)
  74 if [ -n "$KDEB_PKGVERSION" ]; then
  75         packageversion=$KDEB_PKGVERSION
  76 else
  77         packageversion=$version-$revision
  78 fi
  79 tmpdir="$objtree/debian/tmp"
  80 fwdir="$objtree/debian/fwtmp"
  81 kernel_headers_dir="$objtree/debian/hdrtmp"
  82 libc_headers_dir="$objtree/debian/headertmp"
  83 dbg_dir="$objtree/debian/dbgtmp"
  84 packagename=linux-image-$version
  85 fwpackagename=linux-firmware-image-$version
  86 kernel_headers_packagename=linux-headers-$version
  87 libc_headers_packagename=linux-libc-dev
  88 dbg_packagename=$packagename-dbg
  89
  90 if [ "$ARCH" = "um" ] ; then
  91         packagename=user-mode-linux-$version
  92 fi
  93
  94 # Not all arches have the same installed path in debian
  95 # XXX: have each arch Makefile export a variable of the canonical image install
  96 # path instead
  97 case $ARCH in
  98 um)
  99         installed_image_path="usr/bin/linux-$version"
 100         ;;
 101 parisc|mips|powerpc)
 102         installed_image_path="boot/vmlinux-$version"
 103         ;;
 104 *)
 105         installed_image_path="boot/vmlinuz-$version"
 106 esac
 107
 108 BUILD_DEBUG="$(grep -s '^CONFIG_DEBUG_INFO=y' $KCONFIG_CONFIG || true)"
 109
 110 # Setup the directory structure
 111 rm -rf "$tmpdir" "$fwdir" "$kernel_headers_dir" "$libc_headers_dir" "$dbg_dir"
 112 mkdir -m 755 -p "$tmpdir/DEBIAN"
 113 mkdir -p  "$tmpdir/lib" "$tmpdir/boot" "$tmpdir/usr/share/doc/$packagename"
 114 mkdir -m 755 -p "$fwdir/DEBIAN"
 115 mkdir -p "$fwdir/lib/firmware/$version/" "$fwdir/usr/share/doc/$fwpackagename"
 116 mkdir -m 755 -p "$libc_headers_dir/DEBIAN"
 117 mkdir -p "$libc_headers_dir/usr/share/doc/$libc_headers_packagename"
 118 mkdir -m 755 -p "$kernel_headers_dir/DEBIAN"
 119 mkdir -p "$kernel_headers_dir/usr/share/doc/$kernel_headers_packagename"
 120 mkdir -p "$kernel_headers_dir/lib/modules/$version/"
 121 if [ "$ARCH" = "um" ] ; then
 122         mkdir -p "$tmpdir/usr/lib/uml/modules/$version" "$tmpdir/usr/bin"
 123 fi
 124 if [ -n "$BUILD_DEBUG" ] ; then
 125         mkdir -p "$dbg_dir/usr/share/doc/$dbg_packagename"
 126         mkdir -m 755 -p "$dbg_dir/DEBIAN"
 127 fi
 128
 129 # Build and install the kernel
 130 if [ "$ARCH" = "um" ] ; then
 131         $MAKE linux
 132         cp System.map "$tmpdir/usr/lib/uml/modules/$version/System.map"
 133         cp $KCONFIG_CONFIG "$tmpdir/usr/share/doc/$packagename/config"
 134         gzip "$tmpdir/usr/share/doc/$packagename/config"
 135 else
 136         cp System.map "$tmpdir/boot/System.map-$version"
 137         cp $KCONFIG_CONFIG "$tmpdir/boot/config-$version"
 138 fi
 139 # Not all arches include the boot path in KBUILD_IMAGE
 140 if [ -e $KBUILD_IMAGE ]; then
 141         cp $KBUILD_IMAGE "$tmpdir/$installed_image_path"
 142 else
 143         cp arch/$ARCH/boot/$KBUILD_IMAGE "$tmpdir/$installed_image_path"
 144 fi
 145
 146 if grep -q '^CONFIG_MODULES=y' $KCONFIG_CONFIG ; then
 147         INSTALL_MOD_PATH="$tmpdir" $MAKE KBUILD_SRC= modules_install
 148         rm -f "$tmpdir/lib/modules/$version/build"
 149         rm -f "$tmpdir/lib/modules/$version/source"
 150         if [ "$ARCH" = "um" ] ; then
 151                 mv "$tmpdir/lib/modules/$version"/* "$tmpdir/usr/lib/uml/modules/$version/"
 152                 rmdir "$tmpdir/lib/modules/$version"
 153         fi
 154         if [ -n "$BUILD_DEBUG" ] ; then
 155                 for module in $(find $tmpdir/lib/modules/ -name *.ko -printf '%P\n'); do
 156                         module=lib/modules/$module
 157                         mkdir -p $(dirname $dbg_dir/usr/lib/debug/$module)
 158                         # only keep debug symbols in the debug file
 159                         $OBJCOPY --only-keep-debug $tmpdir/$module $dbg_dir/usr/lib/debug/$module
 160                         # strip original module from debug symbols
 161                         $OBJCOPY --strip-debug $tmpdir/$module
 162                         # then add a link to those
 163                         $OBJCOPY --add-gnu-debuglink=$dbg_dir/usr/lib/debug/$module $tmpdir/$module
 164                 done
 165         fi
 166 fi
 167
 168 if [ "$ARCH" != "um" ]; then
 169         $MAKE headers_check KBUILD_SRC=
 170         $MAKE headers_install KBUILD_SRC= INSTALL_HDR_PATH="$libc_headers_dir/usr"
 171 fi
 172
 173 # Install the maintainer scripts
 174 # Note: hook scripts under /etc/kernel are also executed by official Debian
 175 # kernel packages, as well as kernel packages built using make-kpkg.
 176 # make-kpkg sets $INITRD to indicate whether an initramfs is wanted, and
 177 # so do we; recent versions of dracut and initramfs-tools will obey this.
 178 debhookdir=${KDEB_HOOKDIR:-/etc/kernel}
 179 if grep -q '^CONFIG_BLK_DEV_INITRD=y' $KCONFIG_CONFIG; then
 180         want_initrd=Yes
 181 else
 182         want_initrd=No
 183 fi
 184 for script in postinst postrm preinst prerm ; do
 185         mkdir -p "$tmpdir$debhookdir/$script.d"
 186         cat <<EOF > "$tmpdir/DEBIAN/$script"
 187 #!/bin/sh
 188
 189 set -e
 190
 191 # Pass maintainer script parameters to hook scripts
 192 export DEB_MAINT_PARAMS="\$*"
 193
 194 # Tell initramfs builder whether it's wanted
 195 export INITRD=$want_initrd
 196
 197 test -d $debhookdir/$script.d && run-parts --arg="$version" --arg="/$installed_image_path" $debhookdir/$script.d
 198 exit 0
 199 EOF
 200         chmod 755 "$tmpdir/DEBIAN/$script"
 201 done
 202
 203 # Try to determine maintainer and email values
 204 if [ -n "$DEBEMAIL" ]; then
 205        email=$DEBEMAIL
 206 elif [ -n "$EMAIL" ]; then
 207        email=$EMAIL
 208 else
 209        email=$(id -nu)@$(hostname -f)
 210 fi
 211 if [ -n "$DEBFULLNAME" ]; then
 212        name=$DEBFULLNAME
 213 elif [ -n "$NAME" ]; then
 214        name=$NAME
 215 else
 216        name="Anonymous"
 217 fi
 218 maintainer="$name <$email>"
 219
 220 # Generate a simple changelog template
 221 cat <<EOF > debian/changelog
 222 linux-upstream ($packageversion) unstable; urgency=low
 223
 224   * Custom built Linux kernel.
 225
 226  -- $maintainer  $(date -R)
 227 EOF
 228
 229 # Generate copyright file
 230 cat <<EOF > debian/copyright
 231 This is a packacked upstream version of the Linux kernel.
 232
 233 The sources may be found at most Linux ftp sites, including:
 234 ftp://ftp.kernel.org/pub/linux/kernel
 235
 236 Copyright: 1991 - 2009 Linus Torvalds and others.
 237
 238 The git repository for mainline kernel development is at:
 239 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
 240
 241     This program is free software; you can redistribute it and/or modify
 242     it under the terms of the GNU General Public License as published by
 243     the Free Software Foundation; version 2 dated June, 1991.
 244
 245 On Debian GNU/Linux systems, the complete text of the GNU General Public
 246 License version 2 can be found in \`/usr/share/common-licenses/GPL-2'.
 247 EOF
 248
 249 # Generate a control file
 250 cat <<EOF > debian/control
 251 Source: linux-upstream
 252 Section: kernel
 253 Priority: optional
 254 Maintainer: $maintainer
 255 Standards-Version: 3.8.4
 256 Homepage: http://www.kernel.org/
 257 EOF
 258
 259 if [ "$ARCH" = "um" ]; then
 260         cat <<EOF >> debian/control
 261
 262 Package: $packagename
 263 Provides: linux-image, linux-image-2.6, linux-modules-$version
 264 Architecture: any
 265 Description: User Mode Linux kernel, version $version
 266  User-mode Linux is a port of the Linux kernel to its own system call
 267  interface.  It provides a kind of virtual machine, which runs Linux
 268  as a user process under another Linux kernel.  This is useful for
 269  kernel development, sandboxes, jails, experimentation, and
 270  many other things.
 271  .
 272  This package contains the Linux kernel, modules and corresponding other
 273  files, version: $version.
 274 EOF
 275
 276 else
 277         cat <<EOF >> debian/control
 278
 279 Package: $packagename
 280 Provides: linux-image, linux-image-2.6, linux-modules-$version
 281 Suggests: $fwpackagename
 282 Architecture: any
 283 Description: Linux kernel, version $version
 284  This package contains the Linux kernel, modules and corresponding other
 285  files, version: $version.
 286 EOF
 287
 288 fi
 289
 290 # Build kernel header package
 291 (cd $srctree; find . -name Makefile\* -o -name Kconfig\* -o -name \*.pl) > "$objtree/debian/hdrsrcfiles"
 292 (cd $srctree; find arch/$SRCARCH/include include scripts -type f) >> "$objtree/debian/hdrsrcfiles"
 293 (cd $srctree; find arch/$SRCARCH -name module.lds -o -name Kbuild.platforms -o -name Platform) >> "$objtree/debian/hdrsrcfiles"
 294 (cd $srctree; find $(find arch/$SRCARCH -name include -o -name scripts -type d) -type f) >> "$objtree/debian/hdrsrcfiles"
 295 (cd $objtree; find arch/$SRCARCH/include Module.symvers include scripts -type f) >> "$objtree/debian/hdrobjfiles"
 296 destdir=$kernel_headers_dir/usr/src/linux-headers-$version
 297 mkdir -p "$destdir"
 298 (cd $srctree; tar -c -f - -T -) < "$objtree/debian/hdrsrcfiles" | (cd $destdir; tar -xf -)
 299 (cd $objtree; tar -c -f - -T -) < "$objtree/debian/hdrobjfiles" | (cd $destdir; tar -xf -)
 300 (cd $objtree; cp $KCONFIG_CONFIG $destdir/.config) # copy .config manually to be where it's expected to be
 301 ln -sf "/usr/src/linux-headers-$version" "$kernel_headers_dir/lib/modules/$version/build"
 302 rm -f "$objtree/debian/hdrsrcfiles" "$objtree/debian/hdrobjfiles"
 303
 304 cat <<EOF >> debian/control
 305
 306 Package: $kernel_headers_packagename
 307 Provides: linux-headers, linux-headers-2.6
 308 Architecture: any
 309 Description: Linux kernel headers for $KERNELRELEASE on \${kernel:debarch}
 310  This package provides kernel header files for $KERNELRELEASE on \${kernel:debarch}
 311  .
 312  This is useful for people who need to build external modules
 313 EOF
 314
 315 # Do we have firmware? Move it out of the way and build it into a package.
 316 if [ -e "$tmpdir/lib/firmware" ]; then
 317         mv "$tmpdir/lib/firmware"/* "$fwdir/lib/firmware/$version/"
 318         rmdir "$tmpdir/lib/firmware"
 319
 320         cat <<EOF >> debian/control
 321
 322 Package: $fwpackagename
 323 Architecture: all
 324 Description: Linux kernel firmware, version $version
 325  This package contains firmware from the Linux kernel, version $version.
 326 EOF
 327
 328         create_package "$fwpackagename" "$fwdir"
 329 fi
 330
 331 cat <<EOF >> debian/control
 332
 333 Package: $libc_headers_packagename
 334 Section: devel
 335 Provides: linux-kernel-headers
 336 Architecture: any
 337 Description: Linux support headers for userspace development
 338  This package provides userspaces headers from the Linux kernel.  These headers
 339  are used by the installed headers for GNU glibc and other system libraries.
 340 EOF
 341
 342 if [ "$ARCH" != "um" ]; then
 343         create_package "$kernel_headers_packagename" "$kernel_headers_dir"
 344         create_package "$libc_headers_packagename" "$libc_headers_dir"
 345 fi
 346
 347 create_package "$packagename" "$tmpdir"
 348
 349 if [ -n "$BUILD_DEBUG" ] ; then
 350         # Build debug package
 351         # Different tools want the image in different locations
 352         # perf
 353         mkdir -p $dbg_dir/usr/lib/debug/lib/modules/$version/
 354         cp vmlinux $dbg_dir/usr/lib/debug/lib/modules/$version/
 355         # systemtap
 356         mkdir -p $dbg_dir/usr/lib/debug/boot/
 357         ln -s ../lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/boot/vmlinux-$version
 358         # kdump-tools
 359         ln -s lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/vmlinux-$version
 360
 361         cat <<EOF >> debian/control
 362
 363 Package: $dbg_packagename
 364 Section: debug
 365 Provides: linux-debug, linux-debug-$version
 366 Architecture: any
 367 Description: Linux kernel debugging symbols for $version
 368  This package will come in handy if you need to debug the kernel. It provides
 369  all the necessary debug symbols for the kernel and its modules.
 370 EOF
 371
 372         create_package "$dbg_packagename" "$dbg_dir"
 373 fi
 374
 375 exit 0