-mno-cygwin symlinks... (Was Simple hello world in C++)

-mno-cygwin symlinks... (Was Simple hello world in C++)

[Patrick Lightbody]

OK, I just kept making symlinks, it turns i only needed to do:
/usr/include/g++-3/_G_config.h --> ../_G_config.h
/usr/include/g++-3/sys --> ../sys

So now I can compile as the following shows:

[plightbo@raptor c]$ gcc test.cpp -lstdc++
[plightbo@raptor c]$ cygcheck.exe a.exe
Found: .\a.exe
.\a.exe
   C:\cygwin\bin\cygwin1.dll
     C:\WINDOWS\SYSTEM\KERNEL32.dll

Use -h to see help about each section
[plightbo@raptor c]$ gcc test.cpp -lstdc++ -lc -mno-cygwin
[plightbo@raptor c]$ cygcheck.exe a.exe
Found: .\a.exe
.\a.exe
   C:\cygwin\bin\cygwin1.dll
     C:\WINDOWS\SYSTEM\KERNEL32.dll
   C:\WINDOWS\SYSTEM\crtdll.dll

Use -h to see help about each section
[plightbo@raptor c]$

However, as you can see crtdll.dll AND cygwin1.dll shouldn't both be linked 
as is happening. When I run the app, it just locks up, which is 
understandable. So what is going on? I still think it has to do with those 
symlinks I made. What am I doing wrong? When compiling with -mno-cygwin I 
need to have both -lstdc++ (of course) but also -lc or else I get tons of 
linking errors. Yet without -mno-cygwin I no longer need -lc to compile/link.

-Pat


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Re: -mno-cygwin symlinks... (Was Simple hello world in C++)

[Earnie Boyd]

Patrick Lightbody wrote:
> 
> OK, I just kept making symlinks, it turns i only needed to do:
> /usr/include/g++-3/_G_config.h --> ../_G_config.h
> /usr/include/g++-3/sys --> ../sys
> 

You can't do that.

> So now I can compile as the following shows:
> 
> [plightbo@raptor c]$ gcc test.cpp -lstdc++
> [plightbo@raptor c]$ cygcheck.exe a.exe
> Found: .\a.exe
> .\a.exe
>    C:\cygwin\bin\cygwin1.dll
>      C:\WINDOWS\SYSTEM\KERNEL32.dll
> 
> Use -h to see help about each section
> [plightbo@raptor c]$ gcc test.cpp -lstdc++ -lc -mno-cygwin
> [plightbo@raptor c]$ cygcheck.exe a.exe
> Found: .\a.exe
> .\a.exe
>    C:\cygwin\bin\cygwin1.dll
>      C:\WINDOWS\SYSTEM\KERNEL32.dll
>    C:\WINDOWS\SYSTEM\crtdll.dll
> 
> Use -h to see help about each section
> [plightbo@raptor c]$
> 
> However, as you can see crtdll.dll AND cygwin1.dll shouldn't both be linked
> as is happening. When I run the app, it just locks up, which is
> understandable. So what is going on? I still think it has to do with those
> symlinks I made. What am I doing wrong? When compiling with -mno-cygwin I
> need to have both -lstdc++ (of course) but also -lc or else I get tons of
> linking errors. Yet without -mno-cygwin I no longer need -lc to compile/link.
> 

You need the MinGW versions of _G_config.h and libstdc++.a.  I suggest
waiting for the gcc-2.95.2-8 package to be announced.  If you can't wait
then visit http://www.mingw.org and download the MinGW version of gcc.

Earnie.

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