llvm/utils/docker/scripts/checkout.sh

   1 #!/usr/bin/env bash
   2 #===- llvm/utils/docker/scripts/checkout.sh ---------------------===//
   3 #
   4 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   5 # See https://llvm.org/LICENSE.txt for license information.
   6 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   7 #
   8 #===-----------------------------------------------------------------------===//
   9
  10 set -e
  11
  12 function show_usage() {
  13   cat << EOF
  14 Usage: checkout.sh [options]
  15
  16 Checkout git sources into /tmp/clang-build/src. Used inside a docker container.
  17
  18 Available options:
  19   -h|--help           show this help message
  20   -b|--branch         git branch to checkout, i.e. 'main',
  21                       'release/10.x'
  22                       (default: 'main')
  23   -r|--revision       git revision to checkout
  24   -c|--cherrypick     revision to cherry-pick. Can be specified multiple times.
  25                       Cherry-picks are performed in the sorted order using the
  26                       following command:
  27                       'git cherry-pick \$rev)'.
  28 EOF
  29 }
  30
  31 LLVM_GIT_REV=""
  32 CHERRYPICKS=""
  33 LLVM_BRANCH=""
  34
  35 while [[ $# -gt 0 ]]; do
  36   case "$1" in
  37     -r|--revision)
  38       shift
  39       LLVM_GIT_REV="$1"
  40       shift
  41       ;;
  42     -c|--cherrypick)
  43       shift
  44       CHERRYPICKS="$CHERRYPICKS $1"
  45       shift
  46       ;;
  47     -b|--branch)
  48       shift
  49       LLVM_BRANCH="$1"
  50       shift
  51       ;;
  52     -h|--help)
  53       show_usage
  54       exit 0
  55       ;;
  56     *)
  57       echo "Unknown option: $1"
  58       exit 1
  59   esac
  60 done
  61
  62 if [ "$LLVM_BRANCH" == "" ]; then
  63   LLVM_BRANCH="main"
  64 fi
  65
  66 if [ "$LLVM_GIT_REV" != "" ]; then
  67   GIT_REV_ARG="$LLVM_GIT_REV"
  68   echo "Checking out git revision $LLVM_GIT_REV."
  69 else
  70   GIT_REV_ARG=""
  71   echo "Checking out latest git revision."
  72 fi
  73
  74 # Sort cherrypicks and remove duplicates.
  75 CHERRYPICKS="$(echo "$CHERRYPICKS" | xargs -n1 | sort | uniq | xargs)"
  76
  77 function apply_cherrypicks() {
  78   local CHECKOUT_DIR="$1"
  79
  80   [ "$CHERRYPICKS" == "" ] || echo "Applying cherrypicks"
  81   pushd "$CHECKOUT_DIR"
  82
  83   # This function is always called on a sorted list of cherrypicks.
  84   for CHERRY_REV in $CHERRYPICKS; do
  85     echo "Cherry-picking $CHERRY_REV into $CHECKOUT_DIR"
  86     EMAIL="someone@somewhere.net" git cherry-pick $CHERRY_REV
  87   done
  88
  89   popd
  90 }
  91
  92 CLANG_BUILD_DIR=/tmp/clang-build
  93
  94 # Get the sources from git.
  95 echo "Checking out sources from git"
  96 mkdir -p "$CLANG_BUILD_DIR/src"
  97 CHECKOUT_DIR="$CLANG_BUILD_DIR/src"
  98
  99 echo "Checking out https://github.com/llvm/llvm-project.git to $CHECKOUT_DIR"
 100 git clone -b $LLVM_BRANCH --single-branch \
 101   "https://github.com/llvm/llvm-project.git" \
 102   "$CHECKOUT_DIR"
 103
 104 pushd $CHECKOUT_DIR
 105 git checkout -q $GIT_REV_ARG
 106 popd
 107
 108   # We apply cherrypicks to all repositories regardless of whether the revision
 109   # changes this repository or not. For repositories not affected by the
 110   # cherrypick, applying the cherrypick is a no-op.
 111   apply_cherrypicks "$CHECKOUT_DIR"
 112
 113 CHECKSUMS_FILE="/tmp/checksums/checksums.txt"
 114
 115 if [ -f "$CHECKSUMS_FILE" ]; then
 116   echo "Validating checksums for LLVM checkout..."
 117   python "$(dirname $0)/llvm_checksum/llvm_checksum.py" -c "$CHECKSUMS_FILE" \
 118     --partial --multi_dir "$CLANG_BUILD_DIR/src"
 119 else
 120   echo "Skipping checksumming checks..."
 121 fi
 122
 123 echo "Done"