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, have a look at ld and WIN32 (cygwin/mingw). Especially, the direct linking to a dll section for more information on the behavior of -l flag on Windows ports of LD. Extract: For instance, when ld is called with the argument -lxxx it will attempt to find, in the first directory of its search path, … 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
I have two suggestions: Do you have make in your %PATH% environment variable? On my system, I need to add %MINGW_DIR%\bin to %PATH%. Do you have make installed? Depending on your mingw installation, it can be a separate package. Last resort: Can you pass the full path to make on the commandline? cmake -D”CMAKE_MAKE_PROGRAM:PATH=C:/MinGW-32/bin/make.exe” ..\Source
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
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
Historically, MinGW has been in a bit of an odd situation, especially as far as C99 support goes. MinGW relies mostly on the msvcrt.dll runtime that’s distributed with Windows, and that runtime doesn’t support C99. So with older versions of MinGW, you can run into problems in C99 mode when using C99-specific format specifiers. Also … Read more
For gcc on Windows, two things should be considered to build a non-console Windows app: Compiler option -mwindows Have WinMain() It is possible, however, to manually specify -Wl,-subsystem,windows to the linker and include gdi32 and comdlg32 into the build. This is exactly what -mwindows automates. Reference.
Update using terminal: Run the command prompt/terminal (cmd or sh). Update the package list: mingw-get update After updating the package list, run: mingw-get upgrade When the command finishes running, all of your packages will be upgraded. Update using the GUI version: If you aren’t used to the terminal, there is also a GUI version of … Read more