Link static xapian to a share library

[Yuan Fu]

Hi,

I’m trying to link a static libxapian.a into my shared library, so that I can ship my library standalone. I compiled xapian with

./configure --disable-shared
make CPPFLAGS=-fPIC 

And tried to link it to my shared library by

c++ mylib.o -o mylib.dylib -shared -fPIC -I/opt/local/include -Wl,-force_load /opt/local/lib/libxapian.a

-force_load is Mac’s equivalent to --whole-archive, only that it doesn’t need a --no-whole-archive.

I’m getting symbol not found error like this:

Undefined symbols for architecture x86_64:
  "_deflate", referenced from:
      ChertTable::add(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, bool) in libxapian.a(chert_table.o)
      CompressionStream::compress(char const*, unsigned long*) in libxapian.a(compression_stream.o)
     (maybe you meant: ChertTable::lazy_alloc_deflate_zstream() const, CompressionStream::lazy_alloc_deflate_zstream() )
  "_deflateEnd", referenced from:
      ChertTable::~ChertTable() in libxapian.a(chert_table.o)
      CompressionStream::~CompressionStream() in libxapian.a(compression_stream.o)
  "_deflateInit2_", referenced from:
      ChertTable::lazy_alloc_deflate_zstream() const in libxapian.a(chert_table.o)
      CompressionStream::lazy_alloc_deflate_zstream() in libxapian.a(compression_stream.o)
  "_deflateReset", referenced from:
      ChertTable::lazy_alloc_deflate_zstream() const in libxapian.a(chert_table.o)
      CompressionStream::lazy_alloc_deflate_zstream() in libxapian.a(compression_stream.o)
  "_inflate", referenced from:
      ChertTable::read_tag(Cursor*, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*, bool) const in libxapian.a(chert_table.o)
      CompressionStream::decompress_chunk(char const*, int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&) in libxapian.a(compression_stream.o)
     (maybe you meant: CompressionStream::lazy_alloc_inflate_zstream(), ChertTable::lazy_alloc_inflate_zstream() const )
  "_inflateEnd", referenced from:
      ChertTable::~ChertTable() in libxapian.a(chert_table.o)
      CompressionStream::~CompressionStream() in libxapian.a(compression_stream.o)
  "_inflateInit2_", referenced from:
      ChertTable::lazy_alloc_inflate_zstream() const in libxapian.a(chert_table.o)
      CompressionStream::lazy_alloc_inflate_zstream() in libxapian.a(compression_stream.o)
  "_inflateReset", referenced from:
      ChertTable::lazy_alloc_inflate_zstream() const in libxapian.a(chert_table.o)
      CompressionStream::lazy_alloc_inflate_zstream() in libxapian.a(compression_stream.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

It seems that libxapian.a is missing some symbols? Did I compile it wrong?

Thanks,
Yuan