I upgraded to Yosemite, and now all my compilers (from the command line—gcc and icc) are giving me errors like: cannot open source file “ctype.h"
Does anyone know how to fix this? Do I need to reinstall the compilers?
OK, not sure what’s going on here, but after updating to Xcode 6.1.1 and installing the associated command line tools, icc seems like it can now find the system headers. Now having a separate issue with gcc, will post separately…
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I just downloaded and installed Mingw. I also setup the system environment variables for C:\MinGW\bin and C:\MinGW\msys\1.0\bin. I wanted to test to see if I had installed it correctly (it seemed to be since running gcc --version worked), so I wrote hellow world in c and tried to compile with gcc main.c -o hello_world.exe. However I got the error:
"The code execution cannot proceed because libewinpthread-1.dll" was not found. Reinstalling the program may fix this problem."
I have tired reinstalling it and restarting my computer. I have also tried to see if this problem has occurred to others, and while there are a few places it is mentioned, I can't seem to find a solution mentioned. I have thought about trying to download the dll separately, but if I remember correctly, downloading dlls is a big no no.
Awhile ago I installed mingw though chocolatey and it seemed to be working. I have deleted that download from my computer and removed the paths, since I wanted to try to install it the normal way. Could this be part of the error?
Any ideas what the issue could be? Thanks!
You have built an .exe file that depends on libwinpthread-1.dll.
Solutions to make sure the .exe can run:
Add the MinGW bin path to your PATH so libwinpthread-1.dll - this would only fix it for your own system so I wouldn't recommend this if you want to use the .exe file on other systems.
Copy libwinpthread-1.dll from MinGW in the same folder as your .exe file. This is generally needed for any shared dependancy library your .exe is linked against.
Build a static .exe (--static linker flag) to avoid the shared (.dll) dependancy.
Yes! probably is an error, cause MinGW is a bit stinky when it comes to DLLs
Here are some things you have to check:
Make sure the variable helding the location of MinGW is named "path"
and its pointing at: C:\MinGW64\bin
I have been using gcc version 5.3.0. It says that it comes with openmp support. But every time when I compile a program using either gcc [by terminal] or via xCode 7, I get same error, "file omp.h not found". I have searched too much on this issue and tried almost everything I found.
First I tried to locate omp.h on my mac. I found some files; then in header file, I used that specific location of omp.h but no help [it gave me linker error].
I installed gcc version 6.0 (pre-release) but no help. I tried changing C_INCLUDE_PATH [which is now, and previously set to none] but that didn't helped me as well.
I reinstalled clang-omp but no help.
I am using llvm compiler version 7.0. Although i have installed clang-omp, there is no omp.h in my /usr/include/*
I changed the compiler and now I am able to run it. [It was issue of clang, which I couldn't solve].
I am a student and Intel is giving Intel Parallel Studio 1 year licence for free to students.
So I downloaded, and installed it.
In xCode, under build settings, I set my compiler to 'Intel C/C++ compiler' and in parallalization, I turned it to 'yes'. That was it. Then it compiled successfully. But, note that you won't be using header file 'omp.h' anymore.
By the way, I am still looking for answers, just to know what I was doing wrong.
You can install 'clang-omp' or 'gcc' (corresponds to GCC 5.3 right now) packages via Homebrew, both of which support OpenMP.
The built in GCC is based upon GCC 4.2.1 abs uses LLVM back end via Dragonegg, which is why it doesn't support OpenMP.
As noted already, Intel compilers support OpenMP on Mac.
I don't use Xcode editor so I don't know how to use any of these from there, but all will work from terminal just as they do on Linux.
the compiler on the mac is clang (based on llvm 3.5) which does not support openmp.
you can try install llvm/clang/openmp from source or using prebuild binaries, but I must admit it does not work as advertised for me…
edit unless you use the -fopenmp=libomp flag.
So, I got file "lfs.c" "lfs.h" "lfs.def" and ".gitignore". I tried installing MinGW and typing in that command: gcc lfs.c (Keep in mind that I'm a total newbie in such things), which leaves me with error "failed to include lua.h"... I don't know how to do that, can anyone please explain to me how to do that? Or at least give me the link to already compiled lfs.dll?
You are likely to be missing Lua include files; see this SO answer for details on how to set it up.
Simply getting lfs.dll may not be so easy as different DLLs may depends on different Lua DLLs on Windows. I have lfs.dll that is compiled against Lua51.dll, so if this works for your project/needs, you can get a compiled version here.
I was trying to build gdal-1.10.0
(http://trac.osgeo.org/gdal/wiki/DownloadSource) using mingw64 (from
http://sourceforge.net/projects/mingwbuilds/files/host-windows/
x64-4.8.0-release-posix-seh-rev2.7z). I have compiled gdal-1.10.0 under the
standard MinGW (32-bit) version without a problem.
The reason I have to switch to mingw64 is that the standard 32-bit MinGW distribution
does not support c++11 features like std::thread, and (I suspect) other features as
well. But I get an linking error in the end telling me something about
undefined reference to '__imp_GetACP'
(or a different decorated name if I use the 32-bit variant from
mingw64/mingw-builds). BTW, I tried different versions of mingw64, including
64-bit, 32-bit, seh, sjlj, but all gave the same error about GetACP().
I did some homework and found some instructions for a similar compilation task:
http://www.gaia-gis.it/spatialite-3.0.0-BETA/mingw64_how_to.html#env
According to the above website, it seems that they suggest the problem has to do
with WOW64 and the correct version of windows dll files cannot be used because
windows automatically determines it for you depending on whether a 32-bit or
64-bit application making the call. This is supposedly a problem for mingw64
because the compiler gcc is 64-bit but msys is hopelessly 32-bit.
But since I tried 32-bit versions as well, the above does not seem to explain
the error.
Even more, I tried in a dirty way to comment out all calls to GetACP(),
because I don't really care about code pages and all that for my purposes.
Strangely enough, compilation is OK (on a fresh source just with the GetACP()'s commented out), but the same link error is still reported. I checked that libkernel32.a, libiconv.a are in the lib folder, and also followed the instructions in the blog above to copy dll's out from
c:\windows\system32 and place them in mingw subfolders with appropriate renaming. The link error remains. This is where I stopped hacking after spending almost two days on this without success. I can't understand why the entire source-code does not contain a single call to the function and I am still getting the link error.
Can anyone explain what might have caused this issue between gdal and mingw64,
and how to fix it?
Also, a general question about mingw64 is that is it really able to support
posix functions? I see package names such as
x64-4.8.0-release-posix-seh-rev2.7z, but I remember that the MinGW people said
they will never support full posix.
P.S.
I am testing this on a Windows Server 2008 R2, 64-bit.
Update:
The complete steps for building gdal-1.10.0 under MinGW64 (mingw-builds) are:
$./configure
Then,
Edit GDALmake.opt, Find GDAL_ROOT and replace the cygwin drive format with dos/mingw format, e.g.
Change:
GDAL_ROOT = /d/temp/build/gdal-1.10.0
to
GDAL_ROOT = d:/temp/build/gdal-1.10.0
Replace
CONFIG_LIBS = $(GDAL_ROOT)/$(LIBGDAL)
with
CONFIG_LIBS = $(GDAL_ROOT)/$(LIBGDAL) -liconv
Finally,
$ make && make install && cp apps/*.exe /usr/local/bin/
I have accidentally encountered the same problem.
Maybe this is a MinGW bug or bad configuration files, but the solution is to add
-liconv to the end of linker flags, for example, replace
CONFIG_LIBS = $(GDAL_ROOT)/$(LIBGDAL)
with
CONFIG_LIBS = $(GDAL_ROOT)/$(LIBGDAL) -liconv
in GDALmake.opt file (found by searching Mingw directory for GetACP in files).
I just installed Dev C++ and I am learning C programming.
the code i used was
#include <stdio.h>
int main()
{
printf("Hello world");
getch();
}
I saved it as a .c file. When I compile it works fine, but when I compile and run it says source file not compiled. So I googled buncha things and came across this video on youtube which shows you how to fix it. I also saw other forums on google which suggest the same thing... However, after doing whats asked, Now I can't even compile my code. I get this error
Compiler: Default compiler
Executing C:\Dev-Cpp\bin\gcc.exe...
C:\Dev-Cpp\bin\gcc.exe "C:\Users\ubaid\Documents\C\Untitled1.c" -o "C:\Users\ubaid\Documents\C\Untitled1.exe" -I"C:\Dev-Cpp\include" -L"C:\Dev-Cpp\lib"
gcc.exe: Internal error: Aborted (program collect2)
Please submit a full bug report.
See <URL:http://www.mingw.org/bugs.shtml> for instructions.
Execution terminated
I have also used what is asked on this link, and still no luck..
http://learntogeek.com/miscellaneous/solved-source-file-not-compiled-error-in-dev-cpp/
I am using windows 8
I was having this issue and fixed it by going to:
C:\Dev-Cpp\libexec\gcc\mingw32\3.4.2
, then deleting collect2.exe
Install new version of Dev c++. It works fine in Windows 8. It also supports 64 bit version.
Download link is http://sourceforge.net/projects/orwelldevcpp/ .
I guess you're using windows 7 with the Orwell Dev CPP
This version of Dev CPP is good for windows 8 only. However on Windows 7 you need the older version of it which is devcpp-4.9.9.2_setup.exe
Download it from the link and use it.
(Don't forget to uninstall any other version already installed on your pc)
Also note that the older version does not work with windows 8.
This maybe because the c compiler is designed to work in linux.I had this problem too and to fix it go to tools and select compiler options.In the box click on programs
Now you will see a tab with gcc and make and the respective path to it.Edit the gcc and make path to use mingw32-c++.exe and mingw32-make.exe respectively.Now it will work.
The reason was that you were using compilers built for linux.
You can always try doing it manually from the command prompt. Navigate to the path of the file and type:
gcc filename.c -o filename
I found a solution. Please follow the following steps:
Right Click the My comp. Icon
Click Advanced Setting.
CLick Environment Variable. On the top part of Environment Variable Click New
Set Variable name as: PATH then
Set Variable Value as: (" the location of g++ .exe" )
For ex. C:\Program Files (x86)\Dev-Cpp\MinGW64\bin
Click OK
This error occurred because your settings are not correct.
For example I receive
cannot open output file Project1.exe: Permission denied
collect2.exe: error: ld returned 1 exit status
mingw32-make.exe: *** [Project1.exe] Error 1
Because I have no permission to write on my exe file.
After some investigation, and with Dr.Topaz's help, I have learned that you will want to confirm that the program set for g++ in the Compiler Options really does compile the source code. In my case, the C:\Dev-Cpp\bin\g++.exe program did not create an exe, but the C:\Dev-Cpp\bin\c++.exe program did. Either program appears to be intended to take the same arguments and options as GNU g++. I would love to find an actual doc on the Dev-C++ compiler programs, but I have not so far.
You can test the compiler program with a simple example like this:
C:\Dev-Cpp\bin\c++.exe hello.cpp -o hello.exe
Currently in 2021, the Dev-C++ site invites you to download either original Dev-C++ or a newer fork by a group named Embarcadero.
I decided to try the Embarcadero version and the experience was slightly better. The UI is still a tad dated, but the g++.exe program it came with was able to compile programs without issue. Again, take note of where the program is being installed, but in my case, the Embarcadero compiler programs were in C:\Program Files (x86)\Embarcadero\Dev-Cpp\TDM-GCC-64\bin.
Both original Dev-C++ and Embarcadero come with mingw-32 versions of the compiler programs that from what I see do work in a Git Bash console, with slight differences such as not recognizing a default locale when using the command std::cout.imbue(std::locale("")).
I faced this similar error, and none of the solutions worked.
so I tried to download the latest version from here, https://www.bloodshed.net/
I rerun the program.
and everything is now working correctly.
I was facing the same issue as described above.
It can be resolved by creating a new project and creating a new file in that project.
Save the file and then try to build and run.
Hope that helps. :)