Compiling for a mobile device

JRowe47 · Post by **JRowe47** » Mon Nov 09, 2009 12:43 am

I'm getting a Samsung Omnia, and I'd like to use irrlicht on it.

I installed the windows mobile SDK, I have VS 9.

After trying to compile the Irrlicht_mobile6 solution, I get these errors:

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fatal error C1083: Cannot open include file: 'signal.h': No such file or directory
fatal error C1083: Cannot open include file: 'errno.h': No such file or directory
fatal error C1083: Cannot open include file: 'io.h': No such file or directory

Pretty sure there's going to be an easy fix (I'm not including something or w/e.)

When I comment those lines out, I get 8 additional errors. Since this is literally my first attempt at building anything for a mobile device, I'm surprised my PC didn't blow up. Anyway, any help will be greatly appreciated!

hybrid · Post by **hybrid** » Mon Nov 09, 2009 8:39 am

Looks like some setup was made wrong in the first place. At least two of the includes are not used for the CE system. As I don't know if this was only fixed after the official 1.6 release, you might want to check this out with latest SVN/1.6 branch or SVN/trunk. You might also have to disable the Console device, as I don't know if this compiles with CE.
Also, make sure that you include a little more of the error log next time, makes searching ofr the cause somewhat easier.

JRowe47 · Post by **JRowe47** » Mon Nov 09, 2009 8:55 pm

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Linking...
   Creating library ..\..\lib\WinCE-visualstudio\Irrlicht.lib and object ..\..\lib\WinCE-visualstudio\Irrlicht.exp
CFileSystem.obj : error LNK2019: unresolved external symbol CreateFileA referenced in function "public: virtual bool __cdecl irr::io::CFileSystem::existFile(class irr::core::string<char,class irr::core::irrAllocator<char> > const &)const " (?existFile@CFileSystem@io@irr@@UBA_NABV?$string@DV?$irrAllocator@D@core@irr@@@core@3@@Z)
..\..\bin\WinCE-visualstudio\/Irrlicht.dll : fatal error LNK1120: 1 unresolved externals

Everything compiles til the very end, and I get the error above. From reading, I understand its a linker error, but I'm not entirely sure what that means or how to fix it. The text above is the only text dealing with errors. Should I add more?

Thanks very much!

hybrid · Post by **hybrid** » Tue Nov 10, 2009 8:27 am

The error says that CreateFileA does not exist, at least not in the libraries linked into the app. I'm not sure how to properly fix this for CE, maybe you can just remove the 'A' and use the generic function, or you have to convert the string to wchar_t and use the 'W' function.

JRowe47 · Post by **JRowe47** » Thu Nov 12, 2009 1:54 am

Both CreateFile and CreateFileA are defined to be CreateFileW by the mobile SDK. I need to convert one parameter to a wide char, but I can't wrap my head around how exactly to do this.

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error C2664: 'CreateFileW' : cannot convert parameter 1 from 'const irr::c8 *' to 'LPCWSTR'

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HANDLE hFile = CreateFileW(filename.c_str(), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);

So, I need to change the c_str method to return a wide character array instead of a 1 byte array as it is doing now (I understand the surface of it, but the actual fix is a little beyond me.)

The c_str method is:

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	const T* c_str() const
	{
		return array;
	}

Can anyone show me how to wrap that up/convert that into a w_char array?[/code]

Brainsaw · Post by **Brainsaw** » Thu Nov 12, 2009 6:17 am

Maybe

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  stringw(filename).c_str();

JRowe47 · Post by **JRowe47** » Thu Nov 12, 2009 11:21 pm

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CFileSystem.cpp
.\CFileSystem.cpp(715) : error C2440: '<function-style-cast>' : cannot convert from 'const irr::io::path' to 'wchar_t'
        No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
.\CFileSystem.cpp(715) : error C2228: left of '.c_str' must have class/struct/union

Returns that error. The Function call is in CFileSystem.cpp, and the c_str method is in irrString.h.

If anyone could walk me through what needs to be done, I'd greatly appreciate it.

JRowe47 · Post by **JRowe47** » Fri Nov 13, 2009 12:02 am

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HANDLE hFile = CreateFileW(irr::core::stringw(filename).c_str(), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);

Thanks to hybrid, brainsaw, cuteAlien and katya

Now on to testing.

hybrid · Post by **hybrid** » Fri Nov 13, 2009 9:01 am

Ok, I've comitted this. If someone knows a less involved way of checking for a file on WinCE, please tell me (why is there no access()?)

zhp0260 · Post by **zhp0260** » Thu Dec 10, 2009 9:37 am

I meet the same problem when complie it for windows Mobile6.
I forbid the define
'//#define _IRR_COMPILE_WITH_CONSOLE_DEVICE_'

but there are still two error messages.

error 1 fatal error C1083: Cannot open include file: 'errno.h': No such file or directory
error 2 fatal error C1083: Cannot open include file: 'io.h': No such file or directory

the 'io.h' just for _acess function, but I check this function in Window Mobile 6SDK, I can not find it.

hankersyan · Post by **hankersyan** » Sun Dec 13, 2009 3:43 am

In the SDK directory "\Windows Mobile 6 SDK\PocketPC\Include\" and VC8 ce directory "Microsoft Visual Studio 8\VC\ce\include", i can not find "io.h" and "errno.h".
Does WCE support them?