Re: [Mingw-w64-public] mingw And dlopen
In Microsoft Windows platform, LoadLibrary function is used to load DLLs dynamically. Some projects do like this: #ifdef _WIN32 ret = LoadLibrary(...) #else ret = dlopen(...) #endif If you want to use dlopen() in Microsoft Windows platform there is an unofficial wrapper repository here https://github.com/dlfcn-win32/dlfcn-win32.git. ___ Mingw-w64-public mailing list Mingw-w64-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
Re: [Mingw-w64-public] mingw And dlopen
Hello On Sat, Mar 6, 2021 at 8:48 AM Thomas Dineen wrote: > > Gentle People: > > Do any of you have experience with Mingw gcc and dlopen for > dynamic (under application > program control) loading of libs. Specifically I am looking at passing > externs into C functions > included in a dll library. I have been able to make this work just fine > using gcc on Solaris and > CentOS Linux by simply including extern statements in the lib (.so) > source outside the function. > Now using Mingw gcc the externs seem to be ignored and I get undeclared > variables errors. > Can any of you point me to a simple (and current) example of how to > do this? > Why is it so different from Solaris and Linux. > PS I am totally burned out from surfing the web and not finding a simple > and current > way of doing this. It's more a Windows question than mingw one basically : to load the DLL : LoadLibrary() to get the function pointer of the function in your DLL : GetProcAddress() to free resources : FreeLibrary() example attached I suggest that you download dependency walker [1] to see if your functions in your correctly exported hth Vincent Torri [1] https://dependencywalker.com/ ___ Mingw-w64-public mailing list Mingw-w64-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
[Mingw-w64-public] mingw And dlopen
Gentle People: Do any of you have experience with Mingw gcc and dlopen for dynamic (under application program control) loading of libs. Specifically I am looking at passing externs into C functions included in a dll library. I have been able to make this work just fine using gcc on Solaris and CentOS Linux by simply including extern statements in the lib (.so) source outside the function. Now using Mingw gcc the externs seem to be ignored and I get undeclared variables errors. Can any of you point me to a simple (and current) example of how to do this? Why is it so different from Solaris and Linux. PS I am totally burned out from surfing the web and not finding a simple and current way of doing this. Thomas Dineen ___ Mingw-w64-public mailing list Mingw-w64-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
