syclcc-ComputeCpp-0.2.0-to-0.4.0-Ubuntu.sh

#!/bin/bash

     #####################################################################
     #                                                                   #
     # Copyright (c) 2016 Paul Keir, University of the West of Scotland. #
     #                                                                   #
     #####################################################################

HOST_CXX=/usr/bin/g++    # Don't use $CXX as $CXX may reference this script.

usage() { echo syclcc: error: $2 >&2; exit $1; }

[ $# -eq 0      ] && usage 1 "no input files"
[ -z "$COMPUTECPP_DIR" ] && usage 2 "create and initialise a COMPUTECPP_DIR environment var"
  
USE_HOST=0
OFILE="a.out"

# Simpler and easier to read than the alternative but obviously the slight cost
# of looping over the arguments twice, this simply skims the arguments for the 
# driver specific option and compiles with the host compiler then early exits
for var in $@
do
case $var in
    -syclcc-use-host) USE_HOST=1; CMD="$CMD" ;;
    *)                       CMD="$CMD $var" ;;
esac
done

if ((USE_HOST)); then
  $HOST_CXX $CMD
  exit $?
fi

while [[ $# > 0 ]]; do

  case "$1" in
    -I)       INCS="$INCS $1$2";     shift ;;
    -D)     MACROS="$MACROS $1$2";   shift ;;
    -L)   LIBPATHS="$LIBPATHS $1$2"; shift ;;
    -l)    LDFLAGS="$LDFLAGS $1$2"   shift ;;
    -isystem) INCS="$INCS $1$2";     shift ;;
    -o) OFILE=$2; OFILE_NAMED=1;     shift ;;
    -I?*)         INCS="$INCS $1"          ;; # no space between; no shift
    -D?*)       MACROS="$MACROS $1";       ;;
    -L?*)     LIBPATHS="$LIBPATHS $1";     ;;
    -l?*)      LDFLAGS="$LDFLAGS $1"       ;;
    -Wl?*)     LDFLAGS="$LDFLAGS $1"       ;;
    -O?*)         OPTS="$OPTS $1";         ;; # e.g. -O3
    -f?*)       CFLAGS="$CFLAGS $1"        ;; # consider ;& for some code golf
    -v)         CFLAGS="$CFLAGS $1"        ;;
    -dM)        CFLAGS="$CFLAGS $1"        ;;
    -E) PREPROCESS_ONLY=1                  ;; # stop after preprocessing stage
    -g)          DEBUG="$1"                ;; # still doesn't work with CE 0.5
    -std=?*)    CFLAGS="$CFLAGS $1"        ;;
    -rdynamic) LDFLAGS="$LDFLAGS $1"       ;;
    -shared)   LDFLAGS="$LDFLAGS $1"       ;;
    -o?*) OFILE=${1:2}; OFILE_NAMED=1;     ;; # "-o" = the 2 dropped chars
    -c)   COMPILE_ONLY=1                   ;;
    -*)   usage -1 "flags: $1"             ;;
    *)    FILEPATHS="$1   $FILEPATHS"      ;;
  esac
  shift # $2 becomes $1; $3 becomes $2 etc.
done

if ((COMPILE_ONLY)) && ((OFILE_NAMED)) && [ $# -gt 1 ] ; then
  usage 3 "cannot specify -o with -c, with multiple files"
fi

TMP=`mktemp -d`

for FILEPATH in $FILEPATHS
do
  EXT=${FILEPATH##*.}    # Skip object/lib files; though do collect their names
  if [[ $EXT != @(h|c|i|ii|cc|cp|cxx|cpp|c++|C|hh|hp|hxx|hpp|h++|H) ]]; then
    OBJFILES="$FILEPATH $OBJFILES"   # Reverse this to match gcc/clang?
    continue
  fi

  FILENAME=_`echo $FILEPATH | tr '//' '#'`  # prepend _ and replace /s with #s
  OBJFILES="$TMP/$FILENAME.o $OBJFILES"
  $COMPUTECPP_DIR/bin/compute++ -std=c++0x -no-serial-memop $OPTS -O2 -sycl -emit-llvm -I$COMPUTECPP_DIR/include $CFLAGS $INCS $MACROS -o $TMP/$FILENAME.bc -c $FILEPATH
 # $COMPUTECPP_DIR/bin/compute++ -std=c++0x $OPTS -O2 -sycl -emit-llvm -I$COMPUTECPP_DIR/include $CFLAGS $INCS $MACROS -o $TMP/$FILENAME.bc -c $FILEPATH

  INCFLAG="-include $TMP/$FILENAME.sycl"
  $HOST_CXX -DBUILD_PLATFORM_SPIR -I$COMPUTECPP_DIR/include -I$TMP $OPTS -O2 $DEBUG $CFLAGS $INCS $MACROS $INCFLAG -std=c++1z -pthread -o $TMP/$FILENAME.o -c $FILEPATH

  if ((COMPILE_ONLY)); then            # Handle -c
    if ((OFILE_NAMED)); then
      cp $TMP/$FILENAME.o $OFILE
    else
      cp $TMP/$FILENAME.o $(basename "$FILEPATH" | cut -d. -f1).o
    fi
  fi
done

if [ -z "$COMPILE_ONLY" ]; then
  $HOST_CXX -std=c++1z -pthread $OBJFILES -o $OFILE -rdynamic $OPTS -O2 $DEBUG $CFLAGS $LIBPATHS -L$COMPUTECPP_DIR/lib/ -lComputeCpp -lOpenCL $LDFLAGS
fi