Re: mingw compilation problems

[Marco Trudel <mtrudel at gmx dot ch>]

Marco Trudel wrote:
> Hello all
>
> I try to compile a build=Linux, host=mingw, target=mingw gcj and run 
> into this error:
> /bin/sh ./libtool --mode=compile 
> /home/Marco/Desktop/compile-win-win/gcc-build/gcc/gcj 
> -B/home/Marco/Desktop/compile-win-win/gcc-build/gcc/ -ffloat-store 
> -fomit-frame-pointer -fno-omit-frame-pointer -fclasspath= 
> -fbootclasspath=/usr/local/src/gcc/libjava/classpath/lib 
> --encoding=UTF-8 -Wno-deprecated -fbootstrap-classes -g -O2 -c -o 
> java/lang/Object.lo 
> -fsource-filename=/usr/local/src/gcc/libjava/java/lang/Object.java 
> /usr/local/src/gcc/libjava/classpath/lib/java/lang/Object.class
> /home/Marco/Desktop/compile-win-win/gcc-build/gcc/gcj 
> -B/home/Marco/Desktop/compile-win-win/gcc-build/gcc/ -ffloat-store 
> -fomit-frame-pointer -fno-omit-frame-pointer -fclasspath= 
> -fbootclasspath=/usr/local/src/gcc/libjava/classpath/lib 
> --encoding=UTF-8 -Wno-deprecated -fbootstrap-classes -g -O2 -c 
> -fsource-filename=/usr/local/src/gcc/libjava/java/lang/Object.java 
> /usr/local/src/gcc/libjava/classpath/lib/java/lang/Object.class -o 
> java/lang/Object.o
> ./libtool: line 1261: 
> /home/Marco/Desktop/compile-win-win/gcc-build/gcc/gcj: No such file or 
> directory
> make[3]: *** [java/lang/Object.lo] Error 1
> make[3]: Leaving directory 
> `/home/Marco/Desktop/compile-win-win/gcc-build/i686-pc-mingw32/libjava'
>
> Well, of course "/home/Marco/Desktop/compile-win-win/gcc-build/gcc/gcj" 
> does not exist because it is gcj.exe. I then tried to configure gcc with 
> "--with-gcj=i686-pc-mingw32-gcj" (which is in path) but it won't be 
> used.

Ok, as a very ugly workaround, I just linked 
/home/Marco/Desktop/compile-win-win/gcc-build/gcc/gcj to 
i686-pc-mingw32-gcj and I was able to compile gcj.

I think this problem means that all cross-compilations where build != 
host will fail because make tries to use the generated gcj which won't 
run on the build system. Also my workaround only works for Windows 
because there we have the luck that all binaries have an ending. So 
"gcj" is free to be linked to the native gcj.
I tried to track the problem in the Makefile, but I'm just not that 
experienced in Makefiles and have too little idea what happens how. So, 
for the happiness of all cross-compilers out there, I'd be very glad if 
someone could take a look at this. I'm here to test patches...


Marco

> So I run into the same error. This worked with gcc 4.2 so I guess 
> it's a regression. But of course it also might be an error from my side 
> or some newly needed configuration I miss...
>
> Can I provide more informations?
>
>
> thanks
> Marco