summaryrefslogtreecommitdiffstats
path: root/source/k/kernel-source.SlackBuild
blob: f4b35d51f9de1d75d8c88ca0425db0c67b5c74ba (about) (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
#!/bin/sh

# Copyright 2018, 2020, 2021, 2023, 2024  Patrick J. Volkerding, Sebeka, Minnesota, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

cd $(dirname $0) ; CWD=$(pwd)

PKGNAM=${PKGNAM:-kernel-source}
BUILD=${BUILD:-1}
NUMJOBS=${NUMJOBS:-" -j$(expr $(nproc) + 1) "}
TMP=${TMP:-/tmp}
PKG=$TMP/package-$PKGNAM
# If CONFIG_PREEMPT=y and CONFIG_PREEMPT_DYNAMIC=y, then set a default preempt
# mode (none, voluntary, or full):
CONFIG_PREEMPT_DEFAULT_MODE=${CONFIG_PREEMPT_DEFAULT_MODE:-voluntary}

# If a $VERSION is not passed to this script, use the newest linux-*.tar.xz
# found in this directory:
VERSION=${VERSION:-$(/bin/ls -t linux-*.tar.?z | head -n 1 | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
if ! /bin/ls linux-*.tar.?z 1> /dev/null 2> /dev/null ; then
  echo "Error: kernel source not found. (/bin/ls linux-*.tar.?z)"
fi

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$(uname -m)" in
    # Use uname -m for all archs:
    *) ARCH=$(uname -m) ;;
  esac
fi

# This function will revert or apply patches that are present here.
# Directories that are currently supported:
# patches-revert-${VERSION} (revert patches from this directory if kernel version matches)
# patches-revert-${ARCH} (revert patches from this directory if $ARCH matches)
# patches-${VERSION} (apply patches from this directory if kernel version matches)
# patches-${ARCH} (apply patches from this directory if $ARCH matches)
# All the applied/reverted patches will be copied to the root of the kernel source tree.
apply_patches() {
  # First do patches-revert:
  if [ -d $CWD/patches-revert-${VERSION} ]; then
    if [ "$1" = "VERBOSE" ]; then
      echo "Reverting kernel patches in $CWD/patches-revert-${VERSION} and copying patches to $PKG/usr/src/linux-${VERSION}..."
      zcat $CWD/patches-revert-${VERSION}/*.gz | patch -p1 -R --backup --suffix=.orig || exit 1
    else
      zcat $CWD/patches-revert-${VERSION}/*.gz | patch -p1 -R --backup --suffix=.orig 1> /dev/null 2> /dev/null || exit 1
    fi
    cp -a $CWD/patches-revert-${VERSION}/*.gz .
  fi
  if [ -d $CWD/patches-revert-${ARCH} ]; then
    if [ "$1" = "VERBOSE" ]; then
      echo "Reverting kernel patches in $CWD/patches-revert-${ARCH} and copying patches to $PKG/usr/src/linux-${VERSION}..."
      zcat $CWD/patches-revert-${ARCH}/*.gz | patch -p1 -R --backup --suffix=.orig || exit 1
    else
      zcat $CWD/patches-revert-${ARCH}/*.gz | patch -p1 -R --backup --suffix=.orig 1> /dev/null 2> /dev/null || exit 1
    fi
    cp -a $CWD/patches-revert-${ARCH}/*.gz .
  fi
  # Then apply patches:
  if [ -d $CWD/patches-${VERSION} ]; then
    if [ "$1" = "VERBOSE" ]; then
      echo "Applying kernel patches in $CWD/patches-${VERSION} and copying patches to $PKG/usr/src/linux-${VERSION}..."
      zcat $CWD/patches-${VERSION}/*.gz | patch -p1 --backup --suffix=.orig || exit 1
    else
      zcat $CWD/patches-${VERSION}/*.gz | patch -p1 --backup --suffix=.orig 1> /dev/null 2> /dev/null || exit 1
    fi
    cp -a $CWD/patches-${VERSION}/*.gz .
  fi
  if [ -d $CWD/patches-${ARCH} ]; then
    if [ "$1" = "VERBOSE" ]; then
      echo "Applying kernel patches in $CWD/patches-${ARCH} and copying patches to $PKG/usr/src/linux-${VERSION}..."
      zcat $CWD/patches-${ARCH}/*.gz | patch -p1 --backup --suffix=.orig || exit 1
    else
      zcat $CWD/patches-${ARCH}/*.gz | patch -p1 --backup --suffix=.orig 1> /dev/null 2> /dev/null || exit 1
    fi
    cp -a $CWD/patches-${ARCH}/*.gz .
  fi
}

# If KERNEL_CONFIG (name of kernel .config file in ./kernel-configs to use)
# has not been passed to this script, then we will select one. We will prefer
# to use a generic, SMP-supporting .config with a version number exactly
# matching the kernel sources. But if there's no exact version match, we will
# start with the newest .config we can find that's of the appropriate type.
if [ -z "${KERNEL_CONFIG}" ]; then # figure out the best matching .config
  if [ "$ARCH" = "x86_64" ]; then
    CONFIG_SUFFIX=".x64"
  elif [ "$ARCH" = "i586" ]; then
    CONFIG_SUFFIX=".ia32"
  elif [ "$ARCH" = "i686" ]; then
    CONFIG_SUFFIX=".ia32"
  fi
  if [ -r "$CWD/kernel-configs/config-${VERSION}${LOCALVERSION}-generic${CONFIG_SUFFIX}" ]; then
    # Exact match!
    KERNEL_CONFIG="config-${VERSION}${LOCALVERSION}-generic${CONFIG_SUFFIX}"
  else # no exact match, so find newest with the same name:
    FIND_MATCH="$(/bin/ls -t $CWD/kernel-configs/config-*${LOCALVERSION}-generic${CONFIG_SUFFIX} 2> /dev/null | head -n 1)"
    if [ -r "${FIND_MATCH}" ]; then
      KERNEL_CONFIG="$(basename ${FIND_MATCH})"
      unset FIND_MATCH
    else
      echo "Error: no matching .config file could be found for this kernel. Tried:"
      echo "  $CWD/kernel-configs/config-${VERSION}${LOCALVERSION}-generic${CONFIG_SUFFIX} (not found)" 
      exit 1
    fi 
  fi
else # We were given a name to use:
  if [ ! -r "$CWD/kernel-configs/${KERNEL_CONFIG}" ]; then
    echo "Error: specified kernel .config $CWD/kernel-configs/${KERNEL_CONFIG} was not found."
    exit 1
  fi
fi
# Set LOCALVERSION to the value found inside the .config:
LOCALVERSION="$(cat $CWD/kernel-configs/${KERNEL_CONFIG} | grep CONFIG_LOCALVERSION= | cut -f 2 -d = | tr -d \")"

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  # We will have to extract and patch the kernel sources to find out the kernel version:
  TEMPDIR=$(mktemp -d)
  cd $TEMPDIR
  tar xf $CWD/linux-${VERSION}.tar.?z || exit 1
  cd linux*
  apply_patches
  PACKAGE_VERSION=$(grep "^VERSION = " Makefile | rev | cut -f 1 -d ' ' | rev).$(grep "^PATCHLEVEL = " Makefile | rev | cut -f 1 -d ' ' | rev).$(grep "^SUBLEVEL = " Makefile | rev | cut -f 1 -d ' ' | rev)$(grep "^EXTRAVERSION = " Makefile | rev | cut -f 1 -d ' ' | rev)
  cd $CWD
  rm -rf $TEMPDIR
  echo "kernel-source-$(echo ${PACKAGE_VERSION} | tr - _)$(echo ${LOCALVERSION} | tr - _)-noarch-$BUILD.txz"
  exit 0    
fi

echo "Using kernel config: $CWD/kernel-configs/${KERNEL_CONFIG}"

rm -rf $PKG
mkdir -p $TMP $PKG
mkdir -p $PKG/usr/src

echo "Untarring $CWD/linux-${VERSION}.tar.?z in $PKG/usr/src..."
( cd $PKG/usr/src
  tar xf $CWD/linux-${VERSION}.tar.?z || exit 1
  echo "Making /usr/src/linux symlink..." 
  ln -sf linux-* linux
  cd linux-*
  apply_patches VERBOSE
  echo "Copying $CWD/kernel-configs/${KERNEL_CONFIG} to .config..."
  cp -a $CWD/kernel-configs/${KERNEL_CONFIG} .config
  echo "Fixing permissions/ownership..."
  chown -R root:root .
  find . \
  \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
  -exec chmod 755 {} \+ -o \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
  -exec chmod 644 {} \+
) || exit 1

# Kernel is now ready to configure. We will also build this kernel so that
# the installed kernel source package is fully configured, and building an
# out-of-tree module (such as the NVIDIA driver) won't require the user
# to build the kernel sources first.
( cd $PKG/usr/src/linux-${VERSION}
  echo "Making oldconfig..."
  make oldconfig
  if [ ! -r $CWD/kernel-configs/config-${VERSION}${LOCALVERSION}-generic${CONFIG_SUFFIX} ]; then
    echo "Saving new .config as: $CWD/kernel-configs/config-${VERSION}${LOCALVERSION}-generic${CONFIG_SUFFIX}"
    cp -a .config $CWD/kernel-configs/config-${VERSION}${LOCALVERSION}-generic${CONFIG_SUFFIX}
  fi

  # If CONFIG_PREEMPT=y and CONFIG_PREEMPT_DYNAMIC=y, then set a default preempt
  # mode (none, voluntary, or full):
  if grep -wq CONFIG_PREEMPT=y .config ; then
    if grep -wq CONFIG_PREEMPT_DYNAMIC=y .config ; then
      # Sanity check:
      if ! echo $CONFIG_PREEMPT_DEFAULT_MODE | grep -wq -e none -e voluntary -e full ; then
        echo "ERROR: Invalid mode for CONFIG_PREEMPT_DEFAULT_MODE: $CONFIG_PREEMPT_DEFAULT_MODE"
        exit 1
      fi
      echo "Setting default PREEMPT mode: $CONFIG_PREEMPT_DEFAULT_MODE"
      sed -i "s/^int preempt_dynamic_mode = preempt_dynamic_.*;$/int preempt_dynamic_mode = preempt_dynamic_$CONFIG_PREEMPT_DEFAULT_MODE;/g" kernel/sched/core.c
    fi
  fi

  echo "Building kernel and modules (needed before clean for building NVIDIA to work)..."
  make ${NUMJOBS} || exit 1
  make ${NUMJOBS} modules || exit 1
  echo "Cleaning up..."
  make clean
  # Make sure header files aren't missing...
  make prepare
  # Don't package the kernel in the sources:
  find . -name "*Image" -exec rm "{}" \+
  # No need for these:
  rm -f .config.old .version
  find . -name "*.cmd" -exec rm -f "{}" \+ 
  rm .*.d
  # Still some dotfiles laying around... probably fine though
) || exit 1

cd $PKG/usr/src/linux-${VERSION}
# Use the version number found in the Makefile in the package name. This is not
# always the same as the version in the source tarball's filename. For example,
# linux-4.14.tar.xz will have 4.14.0 as the version in the Makefile:
PACKAGE_VERSION=$(grep "^VERSION = " Makefile | rev | cut -f 1 -d ' ' | rev).$(grep "^PATCHLEVEL = " Makefile | rev | cut -f 1 -d ' ' | rev).$(grep "^SUBLEVEL = " Makefile | rev | cut -f 1 -d ' ' | rev)$(grep "^EXTRAVERSION = " Makefile | rev | cut -f 1 -d ' ' | rev)

mkdir $PKG/install
cat $CWD/slack-desc/slack-desc.kernel-source > $PKG/install/slack-desc

# Make the package:
cd $PKG
/sbin/makepkg -l y -c n $TMP/kernel-source-$(echo ${PACKAGE_VERSION} | tr - _)$(echo ${LOCALVERSION} | tr - _)-noarch-$BUILD.txz