#!/bin/bash

case "$1" in
    'eh_elf')
        TARGET='eh_elf'
        LIBUNWIND='eh_elf'
        branch='eh_elf'
        ;;
    'vanilla')
        TARGET='vanilla'
        LIBUNWIND='vanilla'
        branch='vanilla_timer'
        ;;
    'vanilla-nocache')
        TARGET='vanilla-nocache'
        LIBUNWIND='vanilla'
        branch='vanilla_timer_nocache'
        ;;
    *)
        >&2 echo "Usage: $0 [ eh_elf | vanilla | vanilla-nocache ]"
        exit 1
esac

original_branch=$(git rev-parse --abbrev-ref HEAD)

if ! git checkout "$branch" ; then
    >&2 echo "Failed to checkout $branch - maybe your git isn't clean?"
    exit 2
fi

LIBUNWIND_PREFIX="$HOME/local/libunwind-$LIBUNWIND-dbg"
LIBUNWIND_LIB="$LIBUNWIND_PREFIX/lib"
PREFIX="$HOME/local/perf-$TARGET"

export CPATH=$LIBUNWIND_PREFIX/include
export LD_LIBRARY_PATH=$LIBUNWIND_LIB
export EXTRA_CFLAGS=-L$LIBUNWIND_LIB

make -j
mkdir -p $PREFIX/bin
cp "perf" "$PREFIX/bin/"

git checkout "$original_branch"