I'm creating a simple program to familiarize myself with Atmel Studio 6 (running on Win 7 X64), using the ASF supplied libraries/drivers for a SAM4S microcontroller. In compiling, I get several (19) undefined reference errors on the startup_sam4s.c file. I have heard that this usually implies a file missing from project/missing linker files, but I'm (reasonably) confident that I have added all required files into my solution.
The errors are all of the "undefined reference to _szero" sort, and are precisely the same as mentioned in this bug report (albeit with a different microcontroller series). I've followed the fix instructions, but to no avail. I've also tried reinstalling, upgrading to v6.1 (which is supposed to fix the aformentioned bug), and changing permissions to the linker script folder (it appeared not to be able to find the linker script locations), and commenting everything out to make sure that it was not my program that caused the issue.
I would greatly appreciate it if someone could give a few suggestions as to what might be causing this issue. Thanks in advance.
EDIT: Hmm. Rebooted machine and started Atmel Studio again, then went through the bug fix process again, and now I only get three errors: Undefined Reference To _write in Writer.c, Undefined Reference To _read in Readr.c, and one that I had before, ld returned 1 exit status.
Oddly enough, after reinstalling 6.1 on a different computer and creating a new solution with my existing main.c file, it worked perfectly: then reinstalling on previous computer and transferring solution to it fixed it permanently.
I was able to make the following error messages go away by not calling printf():
undefined reference to `_write` writer.c
undefined reference to `_read` readr.c
ld returned 1 exit status collect2.exe
Related
While I was trying to compile a linux-kernel (v. 2.6.39) in Eclipse CDT, I have a not leaving problem about my include paths. I know this is a well discussed topic in the Internet, but all these solutions didn't fix my errors.
One of the errors is: **linux/kvm_host.h: No such file or directory**
one of the marked line in the source code is: #include < linux/kvm_host.h>
What I did (and actually expect to solve this problem):
In
Project Properties
C/C++ General
Paths and Symbols
I've added in "Includes", "Library Paths" the include directories:
e.g.:
- /[path-to-kernel]/linux-2.6.39/
- /[path-to-kernel]/linux-2.6.39/include
- /[path-to-kernel]/linux-2.6.39/include/linux
Still (after another make), it hasn't changed a thing.
So what's the matter, can someone give me a hint?
[Edit: As i mentioned in the comments, with STRG+Click on a underlined library it opens in my browser, so i believe it's just a problem of the Indexer but I think i have tryed everything in its options menu]
I just try to develop a fresh Linux kernel nothing special, I can't be the first one, doing this with a fresh eclipse.
After making a new project on the same kernel for the 3rd time it's working now. But still i don't have a clue why :/, since i rebuild the project an the indexer several times. I hope this won't be going on like this.
Thanks for your support!
I 've built a C program in eclipse it was going fine with the compilation but at some point I changed a part of my code and then the console kept having the same output no matter how many times i build it or run it or change the code once more.So I erased the binary file hoping to start from new but then it keeps popping out binary not found.What should I do please help.Thanks in advance.
This is caused by a compilation or linking or make error. Check the Problems view in Eclipse (you should also see red squiggles, and red crosses, wherever there is a compilation error).
I'm running the MinGW compiler (gcc port for windows). After messing around with the paths I got it running and compiled a program. Now the executable won't open. If i run it from the command line i get access denied. If i run it from windows explorer i get the same thing but in a popup. Avg is also giving me trojan reports about my own program.
I have no idea of what might be happening with your anti-virus, but I have heard from fellow programmers that antivirus can be very annoying giving false-positives these days. Anyway, check that the program that you generated is indeed giving some sort of "Access denied" error instead of "Access violation". The most likely cause is that your program can not access certain dll's that it needs to run, like libgcc_sj.dll (not really sure about the name), or even some msvcrt??.dll . The easiest way to check for the list of dll's that your program depends upon is with an utility distributed in the Window's SDK called "depends.exe".
Good luck!
Hello all I hope I can find a solution for this,I have my project in monotouch and I have configured my AdHoc profile for test on devices, I am able to generate the apps using the standard compiler, but when I want to use the LLVM compiler this compilation process literally never ends .. I left my mac turned on all the night .. I even tried changing the linker options (I know is not recommended). In short I tried with link sdk assemblies only and with don't link. Still the process never ends. If someone is experiencing the she problems and could help me please. Thanks.
Never seen this - but that's definitively a bug and should be reported to Xamarin.
Please trying adding -v -v -v to your Additional mtouch arguments (in the project's options) so the verbosity will be at the maximum.
The rebuild and switch the the "Build Output" (it's in the Error List pad inside MonoDevelop). Once it seems stopped copy-paste the log and include it in the bug report. That should give enough information to diagnose the issue.
I am using the gethostbyname() function in the usual manner...
iaHost.s_addr = inet_addr(lpServerName);
if (iaHost.s_addr == INADDR_NONE)
{
// Wasn't an IP address string, assume it is a name
lpHostEntry = 0;
lpHostEntry = gethostbyname(lpServerName);
}
to access my web site and return information. The variable, "lpServerName", can be any host, e.g., "google.com" or the loop-back, "127.0.0.1".
My system: Windows x64 or x32 (it doesn't matter the same error occurs) running on an AMD Opteron system, XAMPP is on my machine and I use it for debugging purposes, my compiler is Microsoft Visual c++ 2005.
Here's the problem: when I use the loop-back address, the code above works fine. When I try and access a web site exterior to my computer I get the following error: "Windows has triggered a breakpoint in test_gethostbyname.exe. This may be due to a corruption of the heap, and indicates a bug in test_gethostbyname.exe or any of the DLLs it has loaded. The output window may have more diagnostic information". The program, "test_gethostbyname.exe", contains only the parts of the code from a much larger project that apply to accessing the internet. Thus, I don't think the heap is being corrupted by anything I have done. I have tried the "getaddrinfo" command with the same results. I have searched the web for any kind of information on this problem with no joy (other than segmentation faults on unix systems).
Does anyone know of any problem with this command that would cause this error to occur?
Thanks in advance,
Jay
I see you are checking for INADDR_NONE but what about the other fail state INADDR_ANY
http://msdn.microsoft.com/en-us/library/ms738563(VS.85).aspx
What string are you passing to gethostbyname()? Odds are there is something wrong with the format of lpServerName.
I have found the answer. The problem appears to be the libraries on my XP system. As I mentioned before, I compiled the program on another XP system without problem. I compiled the system on my development system with Windows 7 and Visual c++ 8 express and it worked.
Is lpServerName:
not NULL terminated
NULL
already deleted
My guess would be that it's not NULL terminated.
Perhaps inet_addr will stop even if it doens't see a NULL termination, so that's why it works when you use a normal IP dotted string.
I have played with whether or not the string is null terminated and the error has not gone away. The example I have compiled is from the Microsoft description of gethostname() which I would assume is functionally correct, but I still get the error.
This morning I recompiled the example on another machine that is using the express version of visual c++ and the error does not happen. Thus, I am beginning to suspect that there might be a problem with the libraries libraries on my development machine, so I am going to reinstall the compiler and the platform SDK and see if this corrects the problem.