<![CDATA[Strange External Library error]]>Hi Friends

I have been using a lot of external libraries lately, and i usually dont have a problem working with them. However, I am working with one of the IR camera's SDK and this is the problem I face :

The library for some reason runs perfectly alright on Microsoft Visual C++ Express Edition 2008, but fails to run on Qt 4.8.4. Both of them uses the same msvc compiler. I have no idea where I am going wrong.

I get LNK2019 Linker error : Unresolved external symbols

Please Help

]]>https://forum.qt.io/topic/24691/strange-external-library-errorRSS for NodeThu, 23 Apr 2026 00:19:25 GMTThu, 28 Feb 2013 09:00:12 GMT60<![CDATA[Reply to Strange External Library error on Thu, 28 Feb 2013 10:23:22 GMT]]>Did you check the 8.3 name for Program Files ? It might be something else than PROGRA~1

]]>https://forum.qt.io/post/168730https://forum.qt.io/post/168730Thu, 28 Feb 2013 10:23:22 GMT<![CDATA[Reply to Strange External Library error on Thu, 28 Feb 2013 10:16:54 GMT]]>In my case, I'm working with 4 more libraries which are put the same way into my project. I tried the way suggested by you. No change. :(

]]>https://forum.qt.io/post/168727https://forum.qt.io/post/168727Thu, 28 Feb 2013 10:16:54 GMT<![CDATA[Reply to Strange External Library error on Thu, 28 Feb 2013 09:44:53 GMT]]>From my experience, -L followed by a path with spaces (even quoted) doesn't work on Windows, use the 8.3 name in place of "Program Files" (something like PROGRA~1, you have to check what is correct).

On a side not, I think you don't want that path for unix, rather:

@unix: LIBS += -L/path_to_xeneth/lib
win32: LIBS += -LC:/PROGRA~1/Xeneth/Sdk/lib
LIBS += -lxeneth64
@

]]>https://forum.qt.io/post/168715https://forum.qt.io/post/168715Thu, 28 Feb 2013 09:44:53 GMT<![CDATA[Reply to Strange External Library error on Thu, 28 Feb 2013 09:31:42 GMT]]>I understand what you mean. But I am pretty sure I have added the libraries properly. Here is how my .pro looks

@

INCLUDEPATH += "C://Program Files/Xeneth/Sdk/Include"
DEPENDPATH += "C://-Program Files/Xeneth/Sdk/Include"

unix|win32: LIBS += -L"C://Program Files/Xeneth/Sdk/Lib" -lxeneth64

INCLUDEPATH += "C://Program Files/Xeneth/Sdk/Lib"
DEPENDPATH += "C://Program Files/Xeneth/Sdk/Lib"
@

]]>https://forum.qt.io/post/168710https://forum.qt.io/post/168710Thu, 28 Feb 2013 09:31:42 GMT<![CDATA[Reply to Strange External Library error on Thu, 28 Feb 2013 09:05:23 GMT]]>Hi,

Without more information it's difficult to help, but you seem to have a missing library somewhere, are you sure you are linking all required libraries ?

Can you show your project file ?

]]>https://forum.qt.io/post/168709https://forum.qt.io/post/168709Thu, 28 Feb 2013 09:05:23 GMT