VCMI build benchmark for different compilers, linkers and build systems

buildbench.sh

#!/bin/bash
# All compilation done in tmpfs
CFG_VCMI_GIT="https://github.com/vcmi/vcmi.git"
CFG_SRC_DIR="/dev/shm/vcmi_src"
CFG_BUILD_DIR="/dev/shm/vcmi_build"
CFG_BUILD_OPTIONS="-j 9"

# File size function
__check_files() {
  echo "RESULT FILE SIZES:"
  for _filename in launcher/vcmilauncher client/vcmiclient server/vcmiserver lib/libvcmi.so lib/minizip/libminizip.so AI/BattleAI/libBattleAI.so AI/EmptyAI/libEmptyAI.so AI/StupidAI/libStupidAI.so AI/VCAI/libVCAI.so
  do
    du -h $CFG_BUILD_DIR/$_filename
  done
}

# Get VCMI source
if [ ! -d "$CFG_SRC_DIR" ]; then
    mkdir $CFG_SRC_DIR
    cd $CFG_SRC_DIR
    git clone $CFG_VCMI_GIT .
fi

# bench
for _compiler in GCC Clang
do
for _linker in LD Gold
do
    # Set compiler
    if [ "$_compiler" == "GCC" ]; then
      sudo update-alternatives --set cc /usr/bin/gcc
      sudo update-alternatives --set c++ /usr/bin/g++
    elif [ "$_compiler" == "Clang" ]; then
      sudo update-alternatives --set cc /usr/bin/clang-3.7
      sudo update-alternatives --set c++ /usr/bin/clang++-3.7
    else
      echo "O_o"
      exit
    fi
    
    # Set linker
    if [ "$_linker" == "LD" ]; then
      sudo update-alternatives --set ld /usr/bin/ld.bfd
    elif [ "$_linker" == "Gold" ]; then
      sudo update-alternatives --set ld /usr/bin/ld.gold
    else
      echo "O_o"
      exit
    fi

    # Build using "make"
    rm -rf $CFG_BUILD_DIR
    mkdir $CFG_BUILD_DIR
    cd $CFG_BUILD_DIR
    cmake -q $CFG_SRC_DIR -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=/usr
    echo "Build using $_compiler + $_linker + make:"
    time make -s $CFG_BUILD_OPTIONS
    __check_files
    cd ..
    printf "\n\n\n\n\n\n"
    
    # Build using "ninja"
    rm -rf $CFG_BUILD_DIR
    mkdir $CFG_BUILD_DIR
    cd $CFG_BUILD_DIR
    cmake -q $CFG_SRC_DIR -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=/usr -G Ninja -DCMAKE_MAKE_PROGRAM=ninja
    echo "Build using $_compiler + $_linker + ninja:"
    time ninja $CFG_BUILD_OPTIONS
    __check_files
    cd ..
    printf "\n\n\n\n\n\n"
done
done