configure

#!/bin/bash

OUTPUT=config/make.config

show_help ()
{
   echo "$0 options:"
   echo "--compiler name    Configures BOTS for given compiler"
   echo "                   Supported compilers: GCC, ICC, SunStudio, PGI, XLC and  Mercurium"
   echo "--debug            Enables debug flags"
   echo "--warnings         Force warnings to be reported as errors"
   echo "--help             Prints this help"
}

while [ "$#" -gt 0  ]; do
   case $1 in
      --debug) debug=yes
         ;;
      --warnings) warnings=yes
         ;;
      --compiler) shift; COMPILER=$1
         ;;
      --help) 
         show_help
         exit
         ;;
      *) echo "Unknown option $1 (skipping)"
         ;;
   esac
   shift
done

GCC=`gcc -x c -c -fopenmp /dev/null -o /dev/null &>/dev/null  && echo "yes"`
MCC=`mcc --v &> /dev/null && echo "yes"`
ICC=`icc -v &> /dev/null && echo "yes"`
XLC=`xlc -qversion &> /dev/null && echo "yes"`
PGI=`pgcc &> /dev/null && echo "yes"`
SUN=`cc -xopenmp &> /dev/null && echo "yes"`

nc=0

if [ -z "$COMPILER" ]; then

   if [ "$GCC" = "yes" ]; then
      let nc=nc+1
      COMPILERS[nc]="gcc"
   fi

   if [ "$MCC" = "yes" ]; then
      let nc=nc+1
      COMPILERS[nc]="mcc"
   fi

   if [ "$ICC" = "yes" ]; then
      let nc=nc+1
      COMPILERS[nc]="icc"
   fi

   if [ "$XLC" = "yes" ]; then
      let nc=nc+1
      COMPILERS[nc]="xlc"
   fi

   if [ "$PGI" = "yes" ]; then
      let nc=nc+1
      COMPILERS[nc]="pgi"
   fi

   if [ "$SUN" = "yes" ]; then
      let nc=nc+1        
      COMPILERS[nc]="sunstudio"
   fi     

   if [ "$nc" -gt "0" ]; then
      echo "The following compilers are recognized: "
      n=1
      for comp in ${COMPILERS[*]}; do
         echo "  $n. $comp"
         let n=n+1
      done
      echo -n "Choose one to use:"
      read 
      COMPILER=${COMPILERS[$REPLY]}
   else
      echo "No suitable compiler was detected"
      echo "An empty $OUTPUT will be generated"
   fi
fi


[ "$debug" = "yes" ] && DEBUG=-DBOTS_DEBUG
[ "$warnings" = "yes" ] && WARNINGS=

if [ "$COMPILER" = "gcc" -a "$GCC" = "yes" ]; then
   CC=gcc
   CLINK=$CC
   OMPC="$CC -fopenmp"
   OMPLINK="$CC -fopenmp"
   LABEL=gcc
   [ "$debug" = "yes" ] && DEBUG=$DEBUG -g
   [ "$warnings" = "yes" ] && WARNINGS="$WARNINGS -Wall -Werror"

   OPT_FLAGS=-O3
   CC_FLAGS="$DEBUG $WARNINGS"
   OMPC_FLAGS="$DEBUG $WARNINGS"
   CLINK_FLAGS=$DEBUG
   OMPLINK_FLAGS=$DEBUG
fi

if [ "$COMPILER" = "icc" -a "$ICC" = "yes" ]; then
   CC=icc
   CLINK=$CC
   OMPC="$CC -openmp"
   OMPLINK="$CC -openmp"
   LABEL=icc
   [ "$debug" = "yes" ] && DEBUG=$DEBUG -g
   [ "$warnings" = "yes" ] && WARNINGS="$WARNINGS -Wall -Werror"

   OPT_FLAGS=-O2
   CC_FLAGS="$DEBUG $WARNINGS"
   OMPC_FLAGS="$DEBUG $WARNINGS"
   CLINK_FLAGS=$DEBUG
   OMPLINK_FLAGS=$DEBUG
fi


if [ "$COMPILER" = "mcc" -a "$MCC" = "yes" ]; then
   case $(uname -i) in
      x86_64) extras="-m32"
      ;;
   esac

   CC="mcc $extras"
   CLINK=$CC
   OMPC=$CC
   OMPLINK=$CC
   LABEL=mcc
   [ "$debug" = "yes" ] && DEBUG=$DEBUG -g
   [ "$warnings" = "yes" ] && WARNINGS="$WARNINGS -Wall -Werror"

   OPT_FLAGS=-O3
   CC_FLAGS="$DEBUG $WARNINGS --no-openmp"
   OMPC_FLAGS="$DEBUG $WARNINGS"
   CLINK_FLAGS="$DEBUG --no-openmp"
   OMPLINK_FLAGS=$DEBUG
   OMPC_FINAL_FLAGS="--serialize"

   ENABLE_OMPSS=yes

   OMPSSC=mcc
   OMPSSLINK=mcc
   OMPSSC_FLAGS=--ompss
   OMPSSLINK_FLAGS=--ompss

   supports_final_clause=yes
fi

if [ "$COMPILER" = "xlc" -a "$XLC" = "yes" ]; then
   CC=xlc_r
   CLINK=$CC
   OMPC="$CC -qsmp=omp"
   OMPLINK=$OMPC
   LABEL=xlc
   [ "$debug" = "yes" ] && DEBUG=$DEBUG -g
   [ "$warnings" = "yes" ] && WARNINGS="$WARNINGS -qflag=w:w -qhalt=w"

   OPT_FLAGS=-O3
   CC_FLAGS="$DEBUG $WARNINGS"
   OMPC_FLAGS="-qthreaded $DEBUG $WARNINGS"
   CLINK_FLAGS=$DEBUG
   OMPLINK_FLAGS="-qthreaded $DEBUG"
fi

if [ "$COMPILER" = "pgi" -a "$PGI" = "yes" ]; then
   CC=pgcc
   CLINK=$CC
   OMPC="$CC -mp -Minfo=mp"
   OMPLINK=$OMPC
   LABEL=pgi
   [ "$debug" = "yes" ] && DEBUG="$DEBUG -g"
   if [ "$warnings" = "yes" ]; then
      echo "The pgi compiler doesn't support '--warnings' option (skipping it)"
      echo "Press (Enter) to continue..."
      read 
   fi

   OPT_FLAGS=-fast
   CC_FLAGS="$DEBUG $WARNINGS"
   OMPC_FLAGS="$DEBUG $WARNINGS"
   CLINK_FLAGS=$DEBUG
   OMPLINK_FLAGS=$DEBUG
fi

if [ "$COMPILER" = "sunstudio" -a "$SUN" = "yes" ]; then
   CC=cc                         
   CLINK=$CC                     
   OMPC="$CC -xopenmp"           
   OMPLINK=$OMPC                 
   LABEL=suns
   [ "$debug" = "yes" ] && DEBUG=$DEBUG -g
   if [ "$warnings" = "yes" ]; then
      echo "The sunstudio compiler doesn't support '--warnings' option (skipping it)"
      echo "Press (Enter) to continue..."
      read 
   fi

   OPT_FLAGS=-fast
   CC_FLAGS="$DEBUG $WARNINGS"
   OMPC_FLAGS="$DEBUG $WARNINGS"
   CLINK_FLAGS=$DEBUG
   OMPLINK_FLAGS=$DEBUG
fi

if [ -z "$CC" ]; then
   echo "Wrong compiler configuration"
   exit 1
fi

if [ "$debug" = "yes" ]; then
   LABEL="$LABEL-debug"
fi

[ -f $OUTPUT ] && replacing_config=true

cat > $OUTPUT << EOF
#Automatically generated by configure
#compilers and linkers

#config name
LABEL=$LABEL

ENABLE_OMPSS=$ENABLE_OMPSS

#compilers
OMPSSC=$OMPSSC
OMPC=$OMPC
CC=$CC
OMPSSLINK=$OMPSSLINK
OMPLINK=$OMPLINK
CLINK=$CLINK

#compiler and linker flags

OPT_FLAGS=$OPT_FLAGS

CC_FLAGS=$CC_FLAGS
OMPC_FLAGS=$OMPC_FLAGS
OMPSSC_FLAGS=$OMPSSC_FLAGS
OMPC_FINAL_FLAGS=$OMPC_FINAL_FLAGS
OMPSSC_FINAL_FLAG=$OMPSSC_FINAL_FLAGS

CLINK_FLAGS=$CLINK_FLAGS
OMPLINK_FLAGS=$OMPLINK_FLAGS
OMPSSLINK_FLAGS=$OMPSSLINK_FLAGS

EOF

#check experimental features
[ "$supports_final_clause" ] && echo "USE_FINAL_CLAUSE=yes" >> $OUTPUT  

echo "make.config generated"

if [ "$replacing_config" ]; then
   echo "Configuration was changed. Cleaning up"
   make clean
fi 

[ -d bin ] || mkdir -p bin

if make -v | grep GNU &> /dev/null; then
   echo "Run make to compile the benchmarks"
elif gmake -v | grep GNU &> /dev/null; then 
   echo "Run gmake to compile the benchmarks"
else
   echo "I didn't find a GNU-compatible make. You'll need it to compile the benchmarks"
fi

echo "You can further refine your configuration in config/make.config"
echo "Use the scripts in the run directory to execute them"