I have installed Dosbox to run Turbo C in it. But my graphics.h programs are not executing in it. I am getting Linker Error which says"Undefined sumbol initgraph in module..." and so on.
The problem you are facing is quite simple to solve.
Open your Turboc IDE
Click on options
click on linker
click on libraries
mark the graphics option(a cross mark usually)
now run.
You are not linking the required graphics library. It has been quite a while since I last used Turbo C, but if I remember correctly, you can simply configure the toolchain to link the graphics lib in the linker options which are easily accessible from the Turbo C "IDE".
If You are getting Error in Windows XP that Undefined symbol initgraph in module
then follow the Steps :
Go to Console
Go to Options
Go to Linker
Go to Libraries
Make "X" Mark on Graphics Library
Related
I am working on a project where in I create a C library(compiled through Makefile), then I write another C program (that uses the above C library ) and compile. I did all the above in a linux x86_64 system and it worked. Unfortunately I had to do all these things in a device that uses openwrt environment.Having not been too familiar with openwrt, what I did is placed the library that i created in linux, in openwrt's lib folder and tried to compile it, but because the architecture of linux of openwrt is not same, it threw the following error
could not read symbols: File format not recognized
Now, my question is. How can i create the above library for openwrt environment. Do I need to use a makefile, a cross compiler(if yes, which one) or use some other option?
From the wikipedia page of OpenWrt (https://en.wikipedia.org/wiki/OpenWrt):
The OpenWrt build system ...
Provides an integrated cross-compiler toolchain (gcc, ld, uClibc etc.)
so yes, you need to cross compile, please follow the instructions at:
https://wiki.openwrt.org/doc/devel/crosscompile
However, You will need to know the architecture of your OpenWrt box ...
I've been trying to run the code from https://github.com/dungtn/mpi-floyd/blob/master/floyd2d.c in my system. I'm using CodeBlocks IDE and MS-Mpi. When I try to compile the code, it says undefined reference to MPI_file_seek#12. Does this mean MS mpi does not support this function or why does this happen?
This usually happens if you are trying to link 32-bit code with 64-bit libraries. The fact that the unresolved symbol has #12 in its name means that the compiler is expecting that MPI_File_seek is an stdcall function. stdcall is mainly used for DLL functions and only on x86 (x64 uses a different calling convention similar to fastcall). If you are linking against the 64-bit import library of MS-MPI, the decorated symbol won't be found in the library and such an error will occur.
Double check what version of MS-MPI you have and also your project settings and make sure that both have the same "bitness".
Change the project settings in Code::Blocks to a C project (rather than C++ project, what you have currently). It may be easier to create a brand new C project and import the file there. Double check that Code::Blocks in running gcc and not g++ to compile your code (floyd2d.c).
If it still doesn't work, please post the full compiler and linker output of Code::Blocks, including the commands run and their output messages.
My question may completely be a noob. Sorry, for that but I have been trying to compile my first Cuda code in Xcode and I'm lost where and how I could set up the IDE to invoke NVCC.
I installed the latest CUDA toolkit CUDA 6.0 and have even installed GCC 4.8 using brew. I have XCODE 5.5
When I run my code from XCODE all the directives like global are marked as unidentified.
I don't where and to change the settings to invoke NVCC. I will be really thankful, if anyone could help me with this.
Further, when I created the XCODE project, I created it as a C project. So, I placed the CUDA code in this C file, which is what is giving me the above mentioned errors. I tried to replace this .C file with a .cu file (just change the extension), which too failed badly - XCODE didn't even know what to do with the .cu files
COuld anyone please help me?
Thanks in Advance
I have given it a try. Although I have not completely succeeded I thought I'd post my progress here in hopes of helping others. The steps I took were inspired by this page.
Create a new Xcode project
Under Build Settings add a new user defined setting CC with the value /usr/local/cuda/bin/nvcc.
Add /usr/local/cuda/include to Header Search Paths under Build Settings.
Set Enable Modules (C and Objective-C) to No.
Add /usr/local/cuda/lib/libcuda.dylib to Link Binary With Libraries under Build Phases.
For any C files you create set their extension to .cu in the File Inspector, after you have done that you have to set the type of that file to C source to get syntax highlighting, by going to Editor->Syntax Coloring->C.
Problems with this setup:
- Xcode can't run the executable, at least nog if it is compiled for debugging. However you can make it copy the executable to some reasonable location and run it in the terminal.
- Whenever you try 'Build for running' sometimes Xcode magically destroys the whole project.
I am new to C programming.
I was trying to use the pthread API to write some concurrent program.
I downloaded eclipse IDE for C/C++ Developers, MinGW. I have put all the library, header files into the corresponding location of the MinGW file.
When I tried to build the project, there is always an error "cannot find -lpthread", what happened?
I have added the "-pthread" to the GCC compiler.
I have searched a lot in Google but seems no one have similar problem as me.
The answer to this question by someone who is also missing MinGW pthread library should help you out! Essentially the issue is that the MinGW installer script might not download the lpthread library upon installation. Quoted from link:
Just run and open MinGW Installation Manager, which should be pre-installed with MinGW, select "All Packages" on the left panel, and on the right panel, search for "mingw32-pthreads-w32" packages and install them.
I downloaded eclipse IDE for C/C++ Developers, MinGW.
MingGW uses the Windows API. The Windows API does not provide PThreads.
You need to install PThreads for Win32 to have PThreads available under Windows, and with this available under MinGW.
Eclipse is not configured to put the -pthread argument in the gcc compilation. To solve this, go to the Menu:
view sourceprint?
1.Project -> Properties
From the bar on the left:
view sourceprint?
1.c/c++ build -> GCC C Compiler -> Miscellaneous
Add the “-pthread” argument into the beginning of the “Other Flags” Also go to:
view sourceprint?
1.c/c++ build -> Settings -> GCC C Linker -> Libraries
And include the “pthread”library into the other libraries. Click Apply and rebuild the project. Pthreads must work now.
See the question on mingw.org. I ended up with adding 'C:/cygwin/lib' to the settings for the "Library search path (-L)" at properties >> c/c++ build >> settings >> MinGW C Linker >> Libraries.
I've downloaded Eclipse C/C++ IDE . I need to run a simple c program in this(To print welcome).
While trying to run the program its popping up an error message like "Launch failed: Binary not found" .
Need i install any compiler package. ?
Please help me to do this.
Yes, you have to install a compiler, Eclipse is only an IDE. You can get MinGW here.
http://www.eclipse.org/cdt/
Look at the above link,you will get more idea,on how to do development using C/C++ using eclipse.
You can make use of the documentation which comes along with the IDE.
Just on the start up window in Eclipse click Tutorials and then click on c/c++ development link and then read Before you Begin part.
The program you write must be converted into respective binary which is to be run on that particular architecture.This process is carried out by the compiler as a result compiler is required for eclipse IDE to compile and link the code .
Various compilers are available such as Microsoft Visual C++ MinGW GCC or Cygwin GCC in the form of chaintools in eclipse so as to compile the code.
Eclipse is an IDE.It will help you write applications in c/++,but it will not compile your program as Eclipse does not comes with a compiler pre-configured.
You need to install a compiler to run your application.
Eclipse is capable to use many c/c++ compilers,some are:
1.Cygwin
2.MingW
3.Gross
4.Microsoft Visual C++
I would advise to install mingW OR Cygwin.
If you need more help on running a c/c++ application in Eclipse
visit http://www.ibm.com/developerworks/opensource/library/os-ecc/?S_TACT=105AGX44&S_CMP=ART