Linking Error to lib on OSX

billbonney

Hi,

I am building Qt5.4 from source (gitorious) and I having a problem linking in my project. I have built from source successfully (I think) using
@./configure -developer-build -opensource -nomake examples -nomake tests@
This assumes -system-zlib evaluated to use system version

The link error I get is
@Undefined symbols for architecture x86_64:
"_z_adler32", referenced from:
QuaAdler32::calculate(QByteArray const&) in quaadler32.o
QuaAdler32::reset() in quaadler32.o
QuaAdler32::update(QByteArray const&) in quaadler32.o
"_z_crc32", referenced from:
QuaCrc32::calculate(QByteArray const&) in quacrc32.o
QuaCrc32::reset() in quacrc32.o
QuaCrc32::update(QByteArray const&) in quacrc32.o
_unzReadCurrentFile in unzip.o
_zipWriteInFileInZip in zip.o
"_z_deflate", referenced from:
_zipWriteInFileInZip in zip.o
_zipCloseFileInZipRaw in zip.o
"_z_deflateEnd", referenced from:
_zipCloseFileInZipRaw in zip.o
"z_deflateInit2", referenced from:
_zipOpenNewFileInZip3 in zip.o
"_z_get_crc_table", referenced from:
_unzOpenCurrentFile3 in unzip.o
_zipOpenNewFileInZip3 in zip.o
"_z_inflate", referenced from:
_unzReadCurrentFile in unzip.o
"_z_inflateEnd", referenced from:
_unzCloseCurrentFile in unzip.o
"z_inflateInit2", referenced from:
_unzOpenCurrentFile3 in unzip.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [debug/apmplanner2.app/Contents/MacOS/apmplanner2] Error 1
20:38:41: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project qgroundcontrol (kit: Qt5.4 (source))
When executing step "Make"
20:38:41: Elapsed time: 02:31.@
I have LIBS += -lz in the pro file, but it fails.

Any help on how to fix this, or debug this would be awesome.

NOTE: the code can be seen at http://github.com/diydrones/apm_planner and it builds ok when using Qt5.4 pre-built binaries.

SGaist

Hi,

Looks like your are linking to a zlib not built for x86_64, are you sure you are using the right one ?

billbonney

I'm building Qt from source on OSX 10.10 64 bit. I'm not electing the sib, but expecting Qt to pull the correct one. Are you suggesting I need to explicitly state 64bit on a 64bit system?

The same code builds ok using prebuilt Qt on OSX 10.10 64bit. So I don't understand why it fails.

Thanks for any pointers in right direction

SGaist

No, you don't need to.

What are the options you gave to configure when building your own version of Qt ?

billbonney

See the first post. It was on OSX 10.10.

SGaist

Can you show the linker line that fails ?

Also, which version of Xcode are you using ?

billbonney

Xcode 6.1. It's all latest versions for 10.10.

billbonney

here's the linker line, see https://gist.github.com/billbonney/f8e6db162672078bc14d

billbonney

here's the linker line, see https://gist.github.com/billbonney/f8e6db162672078bc14d