third-party/apply-quilt-patches.sh

   1 #!/bin/sh
   2 #
   3 #  Copyright (c) 2015-present, Facebook, Inc.
   4 #  All rights reserved.
   5 #
   6 #  This source code is licensed under the MIT license found in the
   7 #  LICENSE file in the root directory of this source tree.
   8 #
   9
  10 # Applies a patch series maintained with the `quilt` tool
  11 #
  12 # The format is straightforward: if you have `foo.patch` and `bar.patch`,
  13 # applied in that order, `patches/` contains:
  14 #
  15 # - bar.patch
  16 # - foo.patch
  17 # - series
  18 #
  19 # The 'series' file contains:
  20 #
  21 # ```
  22 # foo.patch
  23 # bar.patch
  24 # ```
  25 #
  26 # Quilt uses the presence of a patches/ subdir to identify the root, similar
  27 # to how Hack uses `.hhconfig` - so, to use quilt with an out-of-source patch
  28 # dir is a little bit of work:
  29 #
  30 # ```
  31 # $ cd ~/code/hhvm/build/third-party/fb-mysql/bundled_fbmysqlclient-prefix/src/bundled_fbmysqlclient/
  32 # $ ln -s ~/code/hhvm/third-party/fb-mysql/patches
  33 # $ export QUILT_PATCHES=$(pwd)/patches
  34 # ```
  35 #
  36 # The essential commands are `quilt add`, `quilt refresh`, `quilt push`, and
  37 # `quilt pop`.
  38
  39 QUILT_PATCHES="$1"
  40 if [ ! -d "$QUILT_PATCHES" ]; then
  41   echo "Usage: $0 /path/to/patches"
  42   exit 1
  43 fi
  44
  45 set -e
  46
  47 if [ -n "$HHVM_TP_QUILT" ]; then
  48   export QUILT_PATCHES
  49   echo "$0: using quilt executable: $HHVM_TP_QUILT"
  50   exec "${HHVM_TP_QUILT}" --quiltrc - push -a
  51 fi
  52
  53 echo "$0: applying patches in series, not using quilt."
  54
  55 cat "$QUILT_PATCHES/series" | while read PATCH_FILE; do
  56   echo "Applying patch '$PATCH_FILE'..."
  57   if [ -e ".quilt_$PATCH_FILE.stamp" ]; then
  58     echo "...skipping, already applied."
  59   elif patch -p1 --force < "$QUILT_PATCHES/$PATCH_FILE"; then
  60     touch ".quilt_$PATCH_FILE.stamp"
  61     echo "... applied patch $PATCH_FILE."
  62   else
  63     if patch -p1 --reverse --force --dry-run < "$QUILT_PATCHES/$PATCH_FILE"; then
  64       echo "Failed to apply, appears to have been merged upstream."
  65     else
  66       echo "Failed to apply patch '$PATCH_FILE.'"
  67     fi
  68     exit 1
  69   fi
  70 done
  71 echo "Applied all patches!"