How to use levigo

Question

I want to use leveldb in go,and find the levigo tool I try to build with the follow command

go get github.com/jmhodges/levigo

Then I got failed with error:

/home/fun/workspace/study/leveldb/test/libleveldb.a(env_posix.o): In function `leveldb::(anonymous namespace)::StartThreadWrapper(void*)':
env_posix.cc:(.text+0x1e): undefined reference to `operator delete(void*)'
/home/fun/workspace/study/leveldb/test/libleveldb.a(env_posix.o): In function `leveldb::(anonymous namespace)::PosixEnv::NewLogger(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, leveldb::Logger**)':
env_posix.cc:(.text+0x10c): undefined reference to `operator new(unsigned long)'
/home/fun/workspace/study/leveldb/test/libleveldb.a(env_posix.o): In function `leveldb::(anonymous namespace)::PosixEnv::NewSequentialFile(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, leveldb::SequentialFile**)':
env_posix.cc:(.text+0x1e1): undefined reference to `operator new(unsigned long)'
env_posix.cc:(.text+0x1f7): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'

then I try to run :

CGO_CFLAGS="-I/path/to/leveldb/include" CGO_LDFLAGS="-L/path/to/leveldb/lib" go get github.com/jmhodges/levigo

it does not work and report almost the same error . anybody know what happened and how to fix it? thank you.

Answer 1

Here's my installation of levigo:

$ uname -a
Linux peter 3.8.0-27-generic #40-Ubuntu SMP Tue Jul 9 00:17:05 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
$ go version
go version devel +037a28ab0725 Thu Aug 22 12:13:54 2013 +0900 linux/amd64
$ sudo apt-get install libleveldb-dev
Reading package lists... Done
Building dependency tree       
Reading state information... Done
libleveldb-dev is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
$ go get -v github.com/jmhodges/levigo
github.com/jmhodges/levigo (download)
github.com/jmhodges/levigo
$

What output do you get if you run these commands?

Answer 2

Here is my installation and it worked successfully:

• install leveldb:

  $ tar zxvf leveldb-1.12.0.tar.gz

  $ leveldb-1.12.0/

  $ make

  $ sudo cp -r include/leveldb /usr/include/

  $ sudo cp libleveldb.* /usr/lib/

• install levigo:

  $ go get github.com/jmhodges/levigo