if [ "$OPTIMIZATIONS" = speed ];then
  GCC_OPTIM="-O3"
  LD_OPTIM=""
fi

if [ "$OPTIMIZATIONS" = normal ];then
  GCC_OPTIM="-O2"
  LD_OPTIM=""
fi

if [ "$OPTIMIZATIONS" = size ];then
  GCC_OPTIM="-Os"
  LD_OPTIM=""
fi

GCC_OPTIM="$GCC_OPTIM -ffast-math"
GCC_OPTIM="$GCC_OPTIM -ftree-loop-distribution"
GCC_OPTIM="$GCC_OPTIM -floop-interchange"
GCC_OPTIM="$GCC_OPTIM -floop-strip-mine"
GCC_OPTIM="$GCC_OPTIM -floop-block"
GCC_OPTIM="$GCC_OPTIM -fgraphite-identity"
GCC_OPTIM="$GCC_OPTIM -fexcess-precision=fast"
GCC_OPTIM="$GCC_OPTIM -flto"

LD_OPTIM="$LD_OPTIM -fuse-linker-plugin"
LD_OPTIM="$LD_OPTIM -fuse-ld=gold"
LD_OPTIM="$LD_OPTIM -Wl,--as-needed"

if [ "$DEBUG" = yes ]; then
  TARGET_CFLAGS="$TARGET_CFLAGS -ggdb"
  TARGET_CXXFLAGS="$TARGET_CXXFLAGS -ggdb"
  TARGET_LDFLAGS="$TARGET_LDFLAGS -ggdb"
else
  TARGET_CFLAGS="$TARGET_CFLAGS -fomit-frame-pointer"
  TARGET_CXXFLAGS="$TARGET_CXXFLAGS -fomit-frame-pointer"
  TARGET_LDFLAGS="$TARGET_LDFLAGS -s"
fi

TARGET_CPPFLAGS=
TARGET_CFLAGS="$TARGET_CFLAGS -Wall -pipe $GCC_OPTIM $PROJECT_CFLAGS"
TARGET_CXXFLAGS="$TARGET_CFLAGS"
TARGET_LDFLAGS="$TARGET_LDFLAGS $GCC_OPTIM $LD_OPTIM"

HOST_CPPFLAGS=""
HOST_CFLAGS="-O2 -Wall -pipe -I$ROOT/$TOOLCHAIN/include"
HOST_CXXFLAGS="$HOST_CFLAGS"
HOST_LDFLAGS="-Wl,-rpath,$ROOT/$TOOLCHAIN/lib -L$ROOT/$TOOLCHAIN/lib"

# use -fPIC when necessary
  case "`uname -m`" in
    x86_64|ppc64|arm|armeb|armel)
    HOST_CFLAGS="$HOST_CFLAGS -fPIC"
    HOST_CXXFLAGS="$HOST_CXXFLAGS -fPIC"
    HOST_LDFLAGS="$HOST_LDFLAGS -fPIC"
    ;;
  esac