Some of you experts tried to help me with this about a year ago (much appreciated) but I just could not get it working. So I put it aside to work on other things until now.
I have done more research and I think I understand a little more, but I still can't get it working.
Here is the situation. I have a C library I want to link to as a static library. It was built using MingW/gcc. I have both the dll and .a library files, as well as the header files. The header file contains #ifdef __cplusplus extern "C" { #endif .... #ifdef __cplusplus } #endif and the functions all have DLLEXPORTDATA extern on them.
So I looked at a lot of posts and tried all of these in my .pro file
INCLUDEPATH += "C:/development/qt_projects/hrlogger_dev_spots/debug/tqsllib/include"
//then
//this
LIBS += "C:/development/QT_Projects/HRLogger_Dev_Spots/debug/tqsllib/lib/libtqsllib.a"
//or this
LIBS += "C:/development/QT_Projects/HRLogger_Dev_Spots/debug/tqsllib/lib/libtqsllib.lib"
//or this
LIBS += "C:/development/QT_Projects/HRLogger_Dev_Spots/debug/tqsllib/lib/libtqsllib"
INCLUDEPATH += "C:/development/qt_projects/hrlogger_dev_spots/debug/tqsllib/include"
//then
//this
LIBS += "C:/development/QT_Projects/HRLogger_Dev_Spots/debug/tqsllib/lib/libtqsllib.a"
//or this
LIBS += "C:/development/QT_Projects/HRLogger_Dev_Spots/debug/tqsllib/lib/libtqsllib.lib"
//or this
LIBS += "C:/development/QT_Projects/HRLogger_Dev_Spots/debug/tqsllib/lib/libtqsllib"
To copy to clipboard, switch view to plain text mode
with the same library file named with all of those extensions on it in that directory.
All to no avail. No joy. When I include a call to a function in the library, I get an undefined reference error, which I assume means the library is not linked.
You will have to excuse me, as I am not a C/C++ expert and I may not use the correct terminology.
I can't seem to find any Qt doc that explains how to do this.
Can someone please tell me where I am going wrong? Any help greatly appreciated.
Bookmarks