go-sqlite3 still using built-in copy despite libsqlite3 tag

[stgraber]

Building with -tags libsqlite3, while it does seem to be using the sqlite3.h from the system, still appears to be using the built-in copy of the actual code rather than linking against the system library.

stgraber@castiana:~/data/code/go/src/github.com/mattn/go-sqlite3 (master)$ go build -tags libsqlite3 _example/simple/simple.go
stgraber@castiana:~/data/code/go/src/github.com/mattn/go-sqlite3 (master)$ ldd simple | grep sqlite

Now if I actually remove the embedded copy and try again (no other changes):

stgraber@castiana:~/data/code/go/src/github.com/mattn/go-sqlite3 (master)$ rm sqlite3-binding.*
stgraber@castiana:~/data/code/go/src/github.com/mattn/go-sqlite3 (master)$ go build -tags libsqlite3 _example/simple/simple.go
stgraber@castiana:~/data/code/go/src/github.com/mattn/go-sqlite3 (master)$ ldd simple | grep sqlite
        libsqlite3.so.0 => /usr/lib/x86_64-linux-gnu/libsqlite3.so.0 (0x00007f8ba57ea000)

Any idea what's going on?

[leehambley]

I think this is a duplicate of #318 (comment) having reviewed some of the other issues related to -tag libsqlite3

[mattn]

This is related on this. #294