Compile LedisDB with leveldb and rocksdb support on OSX using Macports

dev.sh

#!/bin/bash
# using macports install:
# port install gcc5 rocksdb leveldb
export CC=/opt/local/bin/gcc-mp-5
export CXX=/opt/local/bin/g++-mp-5
export LEDISTOP=$(pwd)
export LEDISROOT="${LEDISROOT:-${LEDISTOP/\/src\/github.com\/siddontang\/ledisdb/}}"
# LEDISTOP sanity check
if [[ "$LEDISTOP" == "${LEDISTOP/\/src\/github.com\/siddontang\/ledisdb/}" ]]; then
    echo "WARNING: LEDISTOP($LEDISTOP) does not contain src/github.com/siddontang/ledisdb"
    exit 1
fi

#default snappy and leveldb install path
#you may change yourself
SNAPPY_DIR=/opt/local
LEVELDB_DIR=/opt/local
ROCKSDB_DIR=no
LUA_DIR=/opt/local/lua

function add_path()
{
  # $1 path variable
  # $2 path to add
  if [ -d "$2" ] && [[ ":$1:" != *":$2:"* ]]; then
    echo "$1:$2"
  else
    echo "$1"
  fi
}

export GOPATH=$(add_path $GOPATH $LEDISROOT)

GO_BUILD_TAGS=
CGO_CFLAGS=-I/opt/local/include
CGO_CXXFLAGS=-I/opt/local/include
CGO_LDFLAGS=

# check dependent libray, now we only check simply, maybe later add proper checking way.

# check snappy
if [ -f $SNAPPY_DIR/include/snappy.h ]; then
    CGO_CFLAGS="$CGO_CFLAGS -I$SNAPPY_DIR/include"
    CGO_CXXFLAGS="$CGO_CXXFLAGS -I$SNAPPY_DIR/include"
    CGO_LDFLAGS="$CGO_LDFLAGS -L$SNAPPY_DIR/lib -lsnappy"
fi

# check leveldb
if [ -f $LEVELDB_DIR/include/leveldb/c.h ]; then
    CGO_CFLAGS="$CGO_CFLAGS -I$LEVELDB_DIR/include"
    CGO_CXXFLAGS="$CGO_CXXFLAGS -I$LEVELDB_DIR/include"
    CGO_LDFLAGS="$CGO_LDFLAGS -L$LEVELDB_DIR/lib -lleveldb"
    GO_BUILD_TAGS="$GO_BUILD_TAGS leveldb"
fi

# check rocksdb
if [ -f $ROCKSDB_DIR/include/rocksdb/c.h ]; then
    CGO_CFLAGS="$CGO_CFLAGS -I$ROCKSDB_DIR/include"
    CGO_CXXFLAGS="$CGO_CXXFLAGS -I$ROCKSDB_DIR/include"
    CGO_LDFLAGS="$CGO_LDFLAGS -L$ROCKSDB_DIR/lib -lrocksdb"
    GO_BUILD_TAGS="$GO_BUILD_TAGS rocksdb"
fi


#check lua
if [ -f $LUA_DIR/include/lua.h ]; then
    CGO_CFLAGS="$CGO_CFLAGS -I$LUA_DIR/include"
    CGO_LDFLAGS="$CGO_LDFLAGS -L$LUA_DIR/lib -llua"
fi

export CGO_CFLAGS
export CGO_CXXFLAGS
export CGO_LDFLAGS
export GO_BUILD_TAGS