Link error in QT 5.1

[maaroofmoideen]

Hi

I recently migrate my QT 4.8.1 to QT 5.1, but when i am trying to run my application in QT5 i am getting link errors, but it is working fine with previous version, I am using QuaZip in my application

I am attaching the error list

Attachment 9525

Attachment 9526


but when I am building QuaZip using QT5 the error count is reduced but still Link errors are there
this error list i am getting

quaziplib.lib(zip.obj):-1: error: LNK2019: unresolved external symbol _deflate referenced in function _zipWriteInFileInZip

quaziplib.lib(zip.obj):-1: error: LNK2019: unresolved external symbol _deflateEnd referenced in function _zipCloseFileInZipRaw

quaziplib.lib(zip.obj):-1: error: LNK2019: unresolved external symbol _crc32 referenced in function _zipWriteInFileInZip

quaziplib.lib(unzip.obj):-1: error: LNK2001: unresolved external symbol _crc32

quaziplib.lib(zip.obj):-1: error: LNK2019: unresolved external symbol _deflateInit2_ referenced in function _zipOpenNewFileInZip3

quaziplib.lib(zip.obj):-1: error: LNK2019: unresolved external symbol _get_crc_table referenced in function _zipOpenNewFileInZip3

quaziplib.lib(unzip.obj):-1: error: LNK2001: unresolved external symbol _get_crc_table

quaziplib.lib(unzip.obj):-1: error: LNK2019: unresolved external symbol _inflate referenced in function _unzReadCurrentFile

quaziplib.lib(unzip.obj):-1: error: LNK2019: unresolved external symbol _inflateEnd referenced in function _unzCloseCurrentFile

quaziplib.lib(unzip.obj):-1: error: LNK2019: unresolved external symbol _inflateInit2_ referenced in function _unzOpenCurrentFile3

I am sorry for my poor english.
Please help me.
thanks.

[ChrisW67]

It seems you have also changed your Microsoft Visual C++ version from MSVC10 to 11 (VS2010 to VS2012). Quazip needs to be built with the same version of the Microsoft compiler as your Qt library and application. To build Quazip requires the zlib library which appears to be missing in your dev environment.