That depends on which variant of toolchain you’re currently using. Both DWARF and SEH variants (which come starting from GCC 4.8.0) are only single-target. You can see it yourself by inspecting the directory structure of their distributions, i.e. they contain only the libraries with either 64- or 32-bit addressing, but not both. On the other … Read more
Please take a look here: RS-232 for Linux and Windows 1) Windows Serial Port Programming 2) Using the Serial Ports in Visual C++ 3) Serial Communication in Windows 1) You can use this with Windows (incl. MinGW) as well as Linux. Alternative you can only use the code as an example. 2) Step-by-step tutorial how … Read more
Here’s an authoritative answer, from a MinGW project administrator. Your problem arises because you continue to use an obsolete, (no longer maintained; no longer supported), version of GCC. Current versions of mingwrt are compiled using GCC-4.x, (I used GCC-4.8.2 for mingwrt-3.21 and its descendants), and this introduces the dependencies on __chkstk_ms, (which is provided by … Read more
With nm and dlltool from binutils, you should be able to rebuild the library for gcc: echo EXPORTS > python32.def nm python32.lib | grep ” T _” | sed “s/.* T _//” >> python32.def dlltool –input-def python32.def –dllname python32 –output-lib libpython32.a python_test.c: #include “Python.h” int main(int argc, char *argv[]) { Py_Initialize(); PyRun_SimpleString(“from time import time,ctime\n” … Read more
It’s padding the struct to fit an 8-byte boundary. So it actually is taking 40 bytes in memory – sizeof is returning the correct value. If you want it to only take 33 bytes then specify the packed attribute: struct region { public: long long int x; long long int y; long long int width; … Read more
You shouldn’t add C:\MinGw\libexec\gcc\mingw32\4.7.2 to the path. Add: c:\MinGW\bin You may need to reboot to ensure that the path is made available to all processes properly. Another suggestion is to use a different MinGW distribution. It’s been a long time since I used an ‘official’ MinGW distribution because the installation steps were so byzantine and … Read more
To the best of my knowledge, MinGW does not support yet the new c++0x concurrency features (as of GCC 4.5). I remember reading a mailing list exchange in which it was pointed out that in MinGW the following ifdef from the thread header is not satisfied: #if defined(_GLIBCXX_HAS_GTHREADS) I guess this is somehow related to … Read more
Here’s what worked for me: You need to install MSYS with mingw. This is a minimal unix-like shell environment that lets you configure/make most unix packages. Read the mingw docs on how to install that (either with mingw-get or the GUI installer). Once you have installed MSYS, you should have a shortcut in your start … Read more
Based on this error you put in a comment: error LNK2019: unresolved external symbol “int __cdecl openssl_call(struct ssl_State *,int,int,int)” (?openssl_call@@YAHPAUssl_State@@HHH@Z) referenced in function _main MyAPP.obj all other 4 errors are same only with other functions names Try putting extern “C” around your include files for openssl. For example: extern “C” { include “openssl.h” } using … Read more
The first step is to compile your program with -g to include debugging information within the executable: g++ -g -o myprog.exe mycode.cpp Then the program can be loaded into gdb: gdb myprog.exe A few commands to get you started: break main will cause the debugger to break when main is called. You can also break … Read more