I have cygwin on windows through which I run gcc. But after creating .exe files, if I run them on other computers which dont have cygwin, it says cygwin1.dll not found. Is there a way to compile them so that they run on any system?
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5 Answers
In your case, try to copy cygwin1.dll as well (but it could depend on other DLLs as well) (of course you must comply with Cygwin's license with regards to distributing cygwin1.dll)
In cygwin, you can always check the needed modules using:
objdump -p a.exe | grep 'DLL Name'
OR
cygcheck ./a.exe
or for windows in general, use something like this tool: Dependency Walker
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cygcheck says: "Error: could not find a.exe" if I write "cygcheck a.exe"– avdCommented Sep 25, 2009 at 7:28
You need to compile for MinGW (Minimal GNU Win32) mode. You do that by either installing mingw instead of (or in addition to) cygwin, or by passing the --mno-cygwin compiler option to the cygwin gcc.
answered Sep 25, 2009 at 6:23
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But i m using fork function in my program. If I use -mno-cygwin, it says fork not defined.– avdCommented Sep 25, 2009 at 6:27
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2Then you will have to provide cygwin1.dll to your users. Windows itself does not provide a fork() system call. It would be best to rewrite your code to not use fork anymore. Commented Sep 25, 2009 at 7:43
You can try compiling with the command line option -mno-cygwin.
See the Cygwin FAQ.
answered Sep 25, 2009 at 6:48
From http://cygwin.com/faq/faq.html#faq.programming.win32-no-cygwin
How do I compile a Win32 executable that doesn't use Cygwin?
The compilers provided by the mingw-gcc, mingw64-i686-gcc, and mingw64-x86_64-gcc packages link against standard Microsoft DLLs instead of Cygwin. This is desirable for native Windows programs that don't need a UNIX emulation layer.
This is not to be confused with 'MinGW' (Minimalist GNU for Windows), which is a completely separate effort.
