-mno-cygwin compiler parameter doesn't exist.
I tried to use '-static', but then compiler can't find installed -lpng
You need to cross compile it. Run x86_64-w64-mingw32-gcc, included in package mingw64-x86_64-gcc-g++, in cygwin64 to cross compile a native windows 64bit executable. It is similar if you are in cygwin or to compile a 32bit executable.
However, without cygwin compatibility layer, a program using POSIX APIs cannot be compiled. If your program needs POSIX APIs, you have to compile with cygwin dependency.
Reference Executable file generated using GCC under cygwin
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I've just build a gcc 5.2.0 on windows according to this material:
http://preshing.com/20141108/how-to-install-the-latest-gcc-on-windows/
Everything went well. But then I've tried to build Qt with this newly built gcc and I'm getting an error that there is no mingw32-make. Checked directory and no, there isn't one.
But then I checked previously installed gcc, which was work of TDM, downloaded from:
http://tdm-gcc.tdragon.net/
and yes, in his build there is mingw32-make.
So, the question is, how is it that he has that tool, and many other which are absent in my build are present in his?
if you create from the gcc5.2.0 source, a build then you've just created the gcc compiler with all its necessary files. e.g. gcc-5.2.0.exe, gcc.exe, g++.exe, etc.
NOT the MinGW runtime environment for gcc, which contains the mingw32-make.exe !
if you follow your link from your question here you build it with the cygwin make.exe.
It's better to download the mingw 32 binary runtime environment for gcc
or
MinGW64 runtime environment for gcc
Then you have all the files needed to work with QT.
if you want to create a mingw build from source, you need first a MinGW runtime environment then you can use that to build your own mingw32-make.exe.
I'm trying to compile a library (dxflib) for use in windows using cygwin.
I'm loosely following the instructions found here: http://www.ribbonsoft.com/doc/dxflib/2.5/reference/dxflib-reference-manual.pdf
I can get it to compile to make a .a library (ie a unix static library), using 'make' but obviously I'm using cygwin because I want to compile a .lib for use in windows.
When I try to use 'MinGW32-make' (or any other derivative I can think of) cygwin claims that it doesn't exist. I've reinstalled all options with mingw or gcc or g++ remotely in their name in cygwin.
Does anybody know how to get it to compile from the makefile to produce a .lib? Thanks.
I have a project written in gcc - bison -flex on Linux environment. All the project is implemented into a *.so file and is called from python-tkinter graphic surface.
There is a need to run it on windows. However I'd avoid to install all the windows equivalent of gcc - bison -flex programs.
Is it possible to force gcc IN LINUX ENVIRONMENT to compile WINDOWS DLL instead of *.so? It could make life easier to use the same technics as I do now: just do calls from python-tkinter graphic surface.
You can, of course, cross-compile it.
You'll need some packages installed, though.
Your normal project would be able to build if you use the MINGW equivalent of GCC for the target architecture.
Also, take a look at this:
Manual for cross-compiling a C++ application from Linux to Windows?
The linking can be kind of troublesome though, since it could come a time where softlinking fails due to versions. In that case you'll need to create some symbolic links to the correct version.
The output of the compilation process should be with -o DYNAMIC-LIBRARIE-NAME.dll and of course use the -shared flag.
Hope it gives you some pointers..
Regards.
I'm trying to compile Pyaudio, (a Python module) from source, since I'm using Windows, and only 32-bit binaries are available - I need 64. Following these instructions I downloaded Cygwin, and installed every component, to be safe. Installing Portaudio, another module, is required first.
When I run CFLAGS="-mno-cygwin" LDFLAGS="-mno-cygwin" ./configure, I get the error configure: error: C compiler cannot create executables. See 'config.log' for more details. config.log has an additional line below that message: gcc: The -mno-cygwin flag has been removed; use a mingw-targeted cross-compiler.
This leads me to believe that perhaps Cygwin is using the wrong compiler; the instructions are for using MinGw with Cygwin, but I never specified minigw in the process. I also wonder if there's something in the PyAudio build files that needs to be changed for 64-bit. I know nothing about C, compiling, Cygwin or MinGW, and am new to programming in general. Any ideas? Any other information I can provide?
Current versions of Cygwin gcc do not support -mno-cygwin anymore because it never really worked correctly. Instead, you should use a proper cross-compiler, which is provided by the mingw64-i686-gcc packages, then run ./configure --host=i686-w64-mingw32.
In some cases it is an antivirus that is causing problems.
I had avast and had to disable it.
While I am sure that gcc libraries (.a) are incompatible with mingw lubraries (also .a), I want to know. Can I cross-compile a windows executable with mingw using the gcc .a library generated for unix systems?
In code form, keep in mind this is a unix system:
cd mylibrarydirectory/
make #produces mylibrary.a
cd ../myprogramdirectory/
gcc -o UnixExecutable mysrc.c -L../mylibrary.a
#and I get a valid unix executable
i586-mingw32msvc-gcc -o Win32Executable.exe mysrc.c -L../mylibrary.a
#will I get a valid windows executable?
No. You have to recompile the library for Windows.
The second command should give an "incompatible library format" or something error. Or at least undefined references to whatever is linked in.