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path: root/tcwg-llvm-build.sh
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#!/usr/bin/env bash

# This script is an experiment on how to build LLVM in Jenkins.
# The steps here are based on the scripts currently in:
# https://git.linaro.org/toolchain/llvm/linaro-scripts.git

set -exu
set -o pipefail

BASEDIR=$(dirname "$(readlink -f "$0")")
# shellcheck source=tcwg-llvm-common.sh
. "$BASEDIR/tcwg-llvm-common.sh"

# Syntax
SYN_WORKSPACE="--workspace=/path/to/workspace"
SYN_REVISION="--revision=rNNNNN (SVN revision, def. tip)"
SYN_BUILDTYPE="--buildtype={Release|Debug} (def. Release)"
SYN_ASSERTS="--asserts={True|False} (def. True)"
SYN_BUILDJOBS="--buildjobs=N (def. CPUS)"
SYN_LINKJOBS="--linkjobs=N (def. RAM+1)"
SYN_TOOLCHAIN="--toolchain=http://url/for/tarball"
SYN_CMAKEFLAGS="--cmakeflags='cmake flags ...'"
SYN_BUILDID="--buildid=<text-to-add-to-tarball>"
SYN_TOOLCHAIN_FILE="--toolchain-file=<file-name> (file name to copy the produced toolchain file name)"
SYN_COMPILER="--compiler=clang|gcc"
SYN_REPOSITORY="--repository=http://url/for/git/repo/"
SYN_BRANCH="--branch=branchname"
SYN_PROJECTS="--projects='llvm[@sha1] clang[@sha1] etc'"
SYNTAX="$0 $SYN_WORKSPACE $SYN_REVISION $SYN_ASSERTS $SYN_LINKJOBS $SYN_BUILDJOBS $SYN_TOOLCHAIN $SYN_BUILDID $SYN_TOOLCHAIN_FILE $SYN_CMAKEFLAGS $SYN_COMPILER $SYN_REPOSITORY $SYN_BRANCH $SYN_PROJECTS"

# Environment Variables and default values
WORKSPACE=$(pwd)
REVISION=
BUILDTYPE="Release"
ASSERTS="True"
SRCDIR=""
BUILDDIR=""
INSTDIR=""
BUILDJOBS=$CPUS
TOOLCHAIN=""
TOOLCHAIN_FILE=""
CMAKEFLAGS=""
BUILDID=""
REPOSITORY="https://git-us.linaro.org/toolchain/llvm"
BRANCH="master"
PROJECTS=""

# Command line parsing
while [ "$#" -gt 0 ]; do
    ARG=$(echo "$1" | cut -d "=" -f 1)
    VAL=$(echo "$1" | cut -s -d "=" -f 2-)
    case "$ARG" in
      --workspace)
        if [ -d "$VAL" ]; then
          WORKSPACE="$VAL"
        else
          echo "ERROR: $1"
          echo "Syntax: $SYN_WORKSPACE"
          exit 1
        fi
        shift ;;
      --revision)
        if [ ! -z "$VAL" ]; then
          if echo "$VAL" | grep -q "r[0-9]\+"; then
            REVISION="$VAL"
          else
            echo "ERROR: $1"
            echo "Syntax: $SYN_REVISION"
            exit 1
          fi
        fi
        shift ;;
      --buildid)
        if [ "$VAL" != "" ]; then
          BUILDID="$VAL"
        else
          echo "ERROR: $1"
          echo "Syntax: $SYN_BUILDID"
          exit 1
        fi
        shift ;;
      --buildtype)
        if [ "$VAL" = "Debug" ]; then
          BUILDTYPE="$VAL"
        elif [ "$VAL" != "Release" ]; then
          echo "ERROR: $1"
          echo "Syntax: $SYN_BUILDTYPE"
          exit 1
        fi
        shift ;;
      --asserts)
        if [ "$VAL" = "False" ]; then
          ASSERTS="$VAL"
        elif [ "$VAL" != "True" ]; then
          echo "ERROR: $1"
          echo "Syntax: $SYN_ASSERTS"
          exit 1
        fi
        shift ;;
      --buildjobs)
        if [ "$VAL" -gt 0 ]; then
          BUILDJOBS="$VAL"
        else
          echo "ERROR: Build jobs '$VAL' not valid"
          echo "Syntax: $SYN_BUILDJOBS"
          exit 1
        fi
        shift ;;
      --linkjobs)
        if [ "$VAL" -gt 0 ]; then
          LINKJOBS="$VAL"
        else
          echo "ERROR: Link jobs '$VAL' not valid"
          echo "Syntax: $SYN_LINKJOBS"
          exit 1
        fi
        shift ;;
      --repository)
        if [ ! -z "$VAL" ]; then
          REPOSITORY="$VAL"
        else
          echo "ERROR: Git repository '$VAL' not valid"
          echo "Syntax: $SYN_REPOSITORY"
          exit 1
        fi
        shift ;;
      --branch)
        if [ ! -z "$VAL" ]; then
          BRANCH="$VAL"
        else
          echo "ERROR: Git branch '$VAL' not valid"
          echo "Syntax: $SYN_BRANCH"
          exit 1
        fi
        shift ;;
      --toolchain)
        download_toolchain "$WORKSPACE" "$VAL"
        shift ;;
      --compiler)
        set_compiler "$VAL"
        shift ;;
      --toolchain-file)
        if [ "$VAL" != "" ]; then
          TOOLCHAIN_FILE="$VAL"
        else
          echo "ERROR: Toolchain file '$VAL' not valid"
          echo "Syntax: $SYN_TOOLCHAIN_FILE"
          exit 1
        fi
        shift ;;
      --cmakeflags)
        CMAKEFLAGS="$VAL"
        shift ;;
      --projects)
        PROJECTS="$VAL"
        shift ;;
      *)
        echo "ERROR: Invalid argument '$1'"
        echo "Syntax: $SYNTAX"
        exit 1
        ;;
    esac
done

# Validate options
if [ "$BUILDID" = "" ] && [ "$REVISION" = "" ]; then
  echo "ERROR: Missing build ID and SVN revision"
  echo "$SYNTAX"
  exit 1
fi
if [ "$WORKSPACE" = "" ] || [ ! -d "$WORKSPACE" ]; then
  echo "ERROR: Missing workspace"
  echo "$SYNTAX"
  exit 1
fi
if [ "$BUILDTYPE" = "" ] || [ "$ASSERTS" = "" ]; then
  echo "ERROR: Missing build type / asserts option"
  echo "$SYNTAX"
  exit 1
fi
if [ "$LINKJOBS" = "" ] || [ "$BUILDJOBS" = "" ]; then
  echo "ERROR: Missing number of build / link jobs"
  echo "$SYNTAX"
  exit 1
fi

# Dirs
SRCDIR="$WORKSPACE/llvm"
BUILDDIR="$WORKSPACE/build"
INSTDIR="$WORKSPACE/install"
REFDIR="$HOME/llvm-reference"

# Dump
echo "REVISION = $REVISION"
echo "BUILDTYPE = $BUILDTYPE"
echo "ASSERTS = $ASSERTS"
echo "SRCDIR = $SRCDIR"
echo "BUILDDIR = $BUILDDIR"
echo "INSTDIR = $INSTDIR"
echo "REFDIR = $REFDIR"
echo "BUILDJOBS = $BUILDJOBS"
echo "LINKJOBS = $LINKJOBS"
echo "TOOLCHAIN = $TOOLCHAIN"
echo "CC = $CC"
echo "CXX = $CXX"
echo "CMAKEFLAGS = $CMAKEFLAGS"
echo "BRANCH = $BRANCH"
echo "PROJECTS = $PROJECTS"

# Logs
LOGBASE="$WORKSPACE/tcwg-llvm"
LOGEXT="txt"

# Checkout
LLVM_REVS=""
CLONE_STATUS=0
{
  flock -s 9
  for proj_ref in $LLVM_PROJECTS; do
    proj="$(echo "$proj_ref" | cut -d ":" -f 1)"
    dir="$(echo "$proj_ref" | cut -d ":" -f 2)"

    # Check if project is part of the list and get revision if defined
    build_proj=""
    sha1=""
    for p in $PROJECTS ; do
      IFS='@' read -r -a v <<< "$p"
      if [ "$proj" = "${v[0]}" ] ; then
	build_proj="ok"
	[ ${#v[@]} -eq 2 ] && sha1="${v[1]}"
	break
      fi
    done
    [ -z "$build_proj" ] && continue

    # Only clone if the branch exists
    if has_remote_branch "$REPOSITORY/$proj.git" "$BRANCH"; then
      git clone -b "$BRANCH" "$REPOSITORY/$proj.git" \
                --reference "$REFDIR/$proj" \
                "$SRCDIR/$dir" |& tee "$LOGBASE-clone.$LOGEXT"
      # Make sure we are on the right revision
      if [ ! -z "$sha1" ] ; then
	git -C "$SRCDIR/$dir" checkout --detach "$sha1"
      elif [ ! -z "$REVISION" ]; then
        # Move down to the right revision
        update_git "$SRCDIR/$dir" "$REVISION"
      else
        # Get the latest revision
        LLVM_REVS="$LLVM_REVS $(find_svn_rev "$SRCDIR/$dir")"
      fi

    # Error if we did specify projects list and branches, but not there
    else
      echo "ERROR: Project ($proj) specified in the list, but branch ($BRANCH) not found"
      CLONE_STATUS=1
      break
    fi
  done
  # Get the latest revision from all repos
  if [ -z "$REVISION" ]; then
    REVISION="r$(find_last_rev "$LLVM_REVS")"
  fi
} 9>"$REFDIR.lock"

# Make sure we unlock the flock before returning
if [ "$CLONE_STATUS" -ne 0 ]; then
  exit $CLONE_STATUS
fi

# CMake
OPTIONS="-DLLVM_BUILD_TESTS=True "
OPTIONS+="-DCMAKE_BUILD_TYPE='$BUILDTYPE' "
OPTIONS+="-DLLVM_ENABLE_ASSERTIONS='$ASSERTS' "
OPTIONS+="-DLLVM_PARALLEL_COMPILE_JOBS='$BUILDJOBS' "
OPTIONS+="-DLLVM_PARALLEL_LINK_JOBS='$LINKJOBS' "
OPTIONS+="-DCMAKE_INSTALL_PREFIX='$INSTDIR' "
OPTIONS+="$CMAKEFLAGS "
mkdir -p "$BUILDDIR"
cd "$BUILDDIR" && bash -c "cmake -G Ninja '$SRCDIR' $OPTIONS -DLLVM_LIT_ARGS='-sv -j$CPUS'" |& tee "$LOGBASE-cmake.$LOGEXT"

# Build + check
cd "$BUILDDIR" && ninja "-j$CPUS" |& tee "$LOGBASE-build.$LOGEXT"
cd "$BUILDDIR" && ninja "-j$CPUS" check-all |& tee "$LOGBASE-check.$LOGEXT"

# Install
mkdir -p "$INSTDIR"
cd "$BUILDDIR" && ninja "-j$CPUS" install |& tee "$LOGBASE-install.$LOGEXT"

# Pack & Ship
PKGTAG="$BUILDID-$REVISION"
TARGET=$("$BUILDDIR/bin/llc" -version | awk '/target:/ { print $3 }')
PKGNAME="$(push_binary_name "$PKGTAG" "$TARGET")"
PKGDIR="$WORKSPACE/$PKGNAME"
PUSHTYPE="binaries"
PUSHDIR="$(push_binary_dir "$PUSHTYPE")"

cd "$WORKSPACE" && [ ! -d "$PKGDIR" ] && mv "$INSTDIR" "$PKGDIR"
cd "$WORKSPACE" && tar cJf "$PKGNAME.$PUSHSUFFIX" "$PKGNAME"
ssh $PUSHSERVER mkdir -p $PUSHDIR
cd "$WORKSPACE" && scp "$PKGNAME.$PUSHSUFFIX" "$(push_scp_url "$PUSHTYPE")"

# Dump URL
echo "TOOLCHAIN URL: $(push_wget_url "$PKGTAG" "$TARGET" "$PUSHTYPE")"

# Create toolchain file (wget URL)
if [ "$TOOLCHAIN_FILE" != "" ]; then
  echo "toolchain=$(push_wget_url "$PKGTAG" "$TARGET" "$PUSHTYPE")" >> "$TOOLCHAIN_FILE"
  echo "revision=$REVISION" >> "$TOOLCHAIN_FILE"
fi