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GNU linker searches dependencies in libraries/files from command-line only left to right. The WIN32 tutorial is trying to build a Windows GUI application. under latest MinGW, cannot link with C code using stdout #47048 Closed build an empty project failed (undefined reference to `__onexitbegin') #49078 Closed Issues with crt2.o and dllcrt2.o from mingw. mingw/bin/../lib/gcc/mingw32/6.3./../../../libmingw32.a(main.o):(.text.startup+0xa0): undefined reference to `WinMain@16'collect2.exe: error: ld returned 1 . On 12/31/2009 22:57, Keith Marshall wrote: > On Thursday 31 December 2009 13:59:20 JonY wrote: >> try adding libmingwex.a to your link command. mrsimb wrote on Sunday, June 16, 2013:. Hello, Im pretty new to Qt and i have encountered problem. I've been researching it for quite a while with no joy. I am trying to compile the examples for the LeapMotion API by using mingw on cygwin When I compile with mingw64, it works fine: x86_64-w64-mingw32-g++ -s -I ../include -L ../lib/x64/ ExampleConnection.cpp -lLeapC PollingSample.cpp -oPollingSample Thankfully, able to compile against the MinGW tool with small modifications. the problems whose title starts with undefined reference are automatically problems related to the editing of links (the generation of your final binary due to the link editor, which takes place at the very end of the compilation process ) Linking to Pthreads - Undefined References With Mingw Getting started with C or C++ | C Tutorial | C++ Tutorial | C and C++ FAQ | Get a compiler | Fixes for common problems Thread: Linking to Pthreads - Undefined References With Mingw Report message to a moderator. ld -o /tmp/main.exe /tmp/main.o I get a link error: undefined reference to `__main' This is preventing configure from proceeding when compiling FFMpeg b/c it thinks it can't create an executable. Hello, I am not really sure where I should post that since it is linked to a network library and I want to make my connection secured I will put my problem here. It links in a DLL and calls various functions in that DLL. I am just starting to use cygwin/gcc/mingw environment. When I build programs with my (64-bit) "Microsoft Platform SDK for Windows Server 2003 R2" compiler, I have to explicitly link to bufferoverflowu.lib (otherwise I get the "undefined reference to `__security_check_cookie'" error). If I create new project -> C++ Library and compile this project, I see this error @undefined reference to WinMain@16@ Build output @C:/Qt/MinGW/bin/mingw32-make -f Makefile.Release via Building Win32 GUI Applications with MinGW In this specific case, you can use WinMain instead. To find windows.h (needed for a GUI application) depends on which version of VC++ you have. undefined reference to `__security_check_cookie', undefined reference to `__GSHandlerCheck' and undefined reference to `__chkstk'. I already experimented with working with the Twitch API, but as far as I've seen there are no C/C++ implementations for the Twitch API that are still maintained. It's entry point would be "WinMain". MinGW is very strict about the ordering of the libraries to link to. When I build the program, I am seeing numerous errors like "undefined reference to '_imp__*', where * is the actual name of the function. I got dev-c++ and a bit of winsock sample code. That explains the implicit declarations warning. Bug 57220 - [mingw] Undefined reference to __mingw_strtod. GLU 1.2 is the version of GLU that goes with OpenGL 1.1. But what about the undefined references? Summary: [mingw] Undefined reference to __mingw_strtod Status: RESOLVED INVALID Alias: None Product: gcc Classification: Unclassified Component: libstdc++ (show other bugs) Version: 4.9.0 Importance: P3 normal . 10 undefined reference to `SDL_Init' (undefined reference to `WinMain@16' collect2.exe: error: ld returned 1 exit status) I am trying to learn and use SDL on my project. I am using a toolchain prebuilt by rubenvb-4.7.0. I was also once plagued by the __GSHandlerCheck problem, too. I just tried to rebuild mingw-w64-qt5-base from scratch after the update to mingw-gcc 7.2, and got undefined symbols like CertCreateCertificateContext when linking qt5Network.dll: It's weird as this should be in libcrypt32, and -lcrypt32. We are using Qt 5.12.0 and MinGW 64bit for our Windows application. You would typically use the "_tWinMain" preprocessor definition for your entry point and [Mingw-msys] Using Dev-C++ with MSYS - make problems - undefined reference to `WinMain@16' - cannot A native Windows port of the GNU Compiler Collection (GCC) Brought to you by: cstrauss, earnie, gressett, keithmarshall. References Microsoft Docs Docs / Windows / Windows Sockets 2 / Winsock.h / WSAGetLastError function Link StackOverflow undefined reference to `__imp_WSACleanup' Link Share this: Twitter Facebook Loading. [Solved]-Undefined reference to WinMain (C++ MinGW)-C++ Search score:12 Accepted answer This example code uses wWinMainbut One thing to note is that Visual C++ supports a "wWinMain" entry point where the "lpCmdLine" parameter is a "LPWSTR". Changing it to this line from the sdl2-config bundled with the official SDL2 mingw development package fixes the problem:--libs) echo -L${exec_prefix}/lib -lmingw32 -lSDL2main -lSDL2 -mwindows . So I tried out a simpler example: #include <GLFW/glfw3.h> int main () { glfwInit (); GLFWwindow* window = glfwCreateWindow (800, 600, "Hello world!", NULL, NULL); } After compiling this I get the exact undefined references as my engine. Am running into a compile problem. Any idea why I get undefined reference to `__mingw_get_msvcrt_handle' error? I can confirm having seen that in the past, which was due to the use of an older mingw runtime with newer mingw headers. #include <glfw3.h> int main () { glfwInit (); glfwTerminate (); return 0; } gcc -c test.c -Iinclude gcc test.o -lglfw3 -lgdi32 -o test.exe. I built OpenSSL 1.1, 1.0 and 0.8 with MingW (In particular mingw exposes neither the full Win32 API, nor a POSIX API, leaving the subset unusable.) The command line is: Hope they make it . Anyway, stdio.h of my i686-w64-mingw32 cross-tools as well as the stdio.h on the host have sections that are secured by Fixed by #8266 thesword53 commented on Mar 30, 2021 edited by lazka 1480c1 mentioned this issue on Apr 2, 2021 opus: add lssp to the end of libs.private #8266 We statically link IPP libraries to perform FFTs. GLU is the OpenGL Utility Library. not suppose to be a problem. I added the sd . Use Visual Studio. Somehow it does not even link the cpuid function from cpuid.S although it appears to process that file correctly. MinGW generally wants to build a console application with an entry point called "main". You will also need the GUI DLL's. I also try the latest sezero build and it still has the problem. It compiles without error, but when I try to 'g++ -o test test.o', the linker reports: "Undefined reference to ***@16" Searchinf for a solution in Internet, I have found some explanations, Weren't all these fancy GUI IDEs and editors, like VSCode, with their pretty dialogs and buttons, supposed to make things easier, to avoid all these yucky Makefiles and shell commands?You mean that I must concoct some magic incantation in the form of a convoluted JSON configuration file, to get basic functionality right? winsock/mingw compile problem (undefined reference) Dom I'm new to c++. I am trying to make SSL work with boost ASIO. Undefined reference to WinMain (C++ MinGW) c++winapimingwmingw32winmain 26,647 Solution 1 This example code uses wWinMainbut One thing to note is that Visual C++ supports a "wWinMain" entry point where the "lpCmdLine" parameter is a "LPWSTR". Is it a MinGW version or a Windows version that needs updating? Reproduced the problem on Appveyor with 32bit mingw now but do not understand it. Not only they need to be in the right order, like TheBuzzSaw said, but they should be *after* the source code to link to, otherwise there are undefined reference errors, as you saw. I was trying to compile Boost.Locale, and got stuck on the linking phase with undefined references to strtof_l. 1 comment . If the disk version of the file did not have a main function, then there is no place for the local application to start. > > He shouldn't need to; it should be specified automatically, if he is > using gcc or g++ correctly for linking. If I use MSVC2017 I get no link errors, however when I use mingw73_64 I get 234 errors, e.g. "undefined reference to `WinMain". But here's the makefile output if it's any use. For standard C programs the entry point is "main". VRonin 11 May 2021, 09:43 @Christian Ehrlicher. Something like the following should work: g++ mycode.cpp -lglfw3 -lopengl32 -lgdi32 -luser32 -lkernel32 This is the command line example, so for Code Blocks you need to specify those libraries somewhere. The functions are in the library ws2_32.a. I am build Qt on Windows, and install QtCreator. > > I don't mean to denigrate your efforts to help, JonY, but without a > proper understanding of *why* MinGW's enhanced printf . March 15, 2010 02:15 AM. It is a set of functions to create texture mipmaps from a base image, map coordinates between screen and object space, and draw quadric surfaces and NURBS. Sorry for the horrible formatting, I don't know why the text has turned a large size and has been cropped. What do I need to do to resolve this? Or, using a libgfortran that was compiled on a newer mingw, but is now running with an older version. A less severe problem exists on 32bit Linux as well, in cpu autodetection mode the fallback for x86_64 cpus gets confused about USE_TRMM. In this particular case it is indeed wrong but if you think of a library not exposing Qt (for example, a library to read/write xml files that internally uses QXmlStreamReader . 18 C:\crossdev\src\mingw-w64-v3-git\mingw-w64-crt\crt\crt0_c.c undefined reference to `WinMain' C:\Users\teopeishen\Documents\my code\collect2.exe [Error] ld returned 1 exit status 1 I'm using the latest automated builds. Just noticed building cairo (v1.16.0) with MinGW-w64 7.0.0 also fails with undefined reference to '__strncat_chk' If you would like to refer to this comment somewhere else in this project, copy and paste the following link: @Christian-Ehrlicher said in Qt 6 undefined reference to WinMain on MinGW: PRIVATE is not correct, it should be PUBLIC. Hello, I am trying to build a super simple test program with GLFW on window 10 with gcc and MinGW using the static libraries, but I keep getting undefined referenced errors. For . at first I had some problems where my ide can't find it. So, I am a novice. Just started learning it 24 hours ago. This program doesn't use pCmdLine value, so it should compile when you change wWinMain to WinMain and PWSTR pCmdLine to PSTR pCmdLine. It throws a lot of undefined refernce errors , i mean a lot . I am trying to build an old Fortran program with GFortran (ver 5.3.0) on Windows 10 using MinGW. I installed via the add-on manager in MATLAB without errors. - click "add" button, type in "sfml-network" (without ""), click ok - repeat last step several times and add "sfml-audio", "sfml-graphics", "sfml-window", "sfml-system", "opengl32" (without "") in the same order as written here - click on "Debug" in the treeview at the left same problem here. Sorry. I'm using clion ide and mingw. If you get this error, make sure you saved your file. So if your main.cpp depends on functions in glfw or opengl, then it must come first in command-line, not after glfw/opengl: g++ -Iinclude -Llib-mingw-w64 Source/main.cpp -lglfw3 -lopengl32 -lgdi32 . After some searching in the source code, I discovered that the function is mapped to . The problem might be that the project's configure has some problems figuring out whether the host's vsnprintf is working properly or not, or whether the user wants to stick with MS stuff or functions that are C99 compliant. To use it with MinGW see this MinGW Freeglut 64bit on Windows Example. If you later would need unicode command line use LPWSTR cmd_line = GetCommandLineW (); instead of WinMain argument. When I print the value of _WIN32_WINNT I get 0x400 so obviously the function isn't declared. Re: mingw: undefined reference to `WinMain@16' [ message #649388 is a reply to message #628930] I can create the C files, but not an executable. OS:Windows 10 64 bit (1909) terminal: cmder Using SFML-2.5.1-windows-gcc-7.3.-mingw-32-bitCommandline: I am on 2017b. [Mingw-w64-public] time.h : undefined reference to '_mkgmtime32' Sandeep Thakkar Mon, 29 Feb 2016 23:27:21 -0800 I have dowloaded mingw-builds which Toolchains targeting Win32 from below link. You would typically use the "_tWinMain" preprocessor definition for your entry point and Summary Files Reviews Support News I've made my project using MinGW 64-bit and recently it looks like i will aim for 32-bit platform so i tried to build my project using 32-bit MinGW, instaled with maintanance tool, but it turned out to be not working at all . It's free, and I simply have no interest in trying to support the bastardized environment that is mingw. I am on windows and using MingW 6.3. I am tryng to compile a simple C++ program, with g++. When I added work to try to get mingw to compile winsock properly, the whole thing failed. Essentially you need to make sure you include all the required libaries, which can depend on the version of MinGW you are using. #53454 Closed Unable to link mingw64 + rust nightly undefined reference to `__imp___acrt_iob_func' #59604 Closed Please, no one waste the effort telling me to google it. I've done nothing out of the ordinary. Hello, I'm relatively new to Raylib and I'm interested in making twitch chat-controlled games similar to things like Twitch plays Pokemon. Also, it does not happen for me on a clean install of a cross-compiler. Here is the command I use to compile: I have tried switching the position of the libraries around as this had . Function is mapped to to build a console application with an entry point called & ;. Be PUBLIC instead of WinMain argument in that DLL instead of WinMain argument to process that file.. Been researching it for quite a while with no joy in libraries/files from command-line only left to.. 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