Re: Building a crosscompiler for mingw

[Adam Megacz <gcj at lists dot megacz dot com>]

You need to have the Mingw headers in $PREFIX/i686-pc-mingw32/include

  - a


Lars Andersen <lars@rimfaxe.com> writes:
> In a previous post i found this for building a crosscompiler with target
> mingw
> 
> 
> >>>>>>>>>>>>>>>>>>>>>>>>
> >
> > Actually, it does work OOTB (as of 3.1). The binaries it produces are
> > native Win32 binaries which do not require the Cygwin POSIX-to-Win32
> > translation layer DLL.
> 
>   ../gcc/configure \
>                    --prefix=$PREFIX \
>                    --target=i686-pc-mingw32 \
>                    --host=i686-pc-linux-gnu \
>                    --enable-languages=c,c++,java \
>                    --disable-nls \
>                    --with-as=$PREFIX/i686-pc-mingw32/bin/as \
>                    --with-ld=$PREFIX/i686-pc-mingw32/bin/ld \
>                    --with-gnu-ld \
>                    --with-gnu-as \
>                    --enable-libgcj \
>                    --enable-gc-type=boehm \
>                    --disable-shared \
>                    --enable-threads=win32 \
>                    --disable-hash-synchronization \
>                    --disable-interpreter \
>                    --enable-sjlj-exceptions
> >
> >>>>>>>>>>>>>>>>>>>
> 
> 
> However, when i try this it produces an error.
> In particular this command from the makefile :
> 
> /home/lars/gcc_cvs/objwin/gcc/xgcc \
>      -B/home/lars/gcc_cvs/objwin/gcc/  \
>      -B/usr/local/win32/i686-pc-mingw32/bin/  \
>      -B/usr/local/win32/i686-pc-mingw32/lib/  \
>      -isystem /usr/local/win32/i686-pc-mingw32/include -O2 \
>      -I../../gcc/gcc/../winsup/include \
>      -I../../gcc/gcc/../winsup/cygwin/include  \
>      -I../../gcc/gcc/../winsup/w32api/include \
>      -DIN_GCC -DCROSS_COMPILE \
>      -W -Wall -Wwrite-strings -Wstrict-prototypes  \
>      -Wmissing-prototypes -isystem ./include \
>      -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 \
>      -D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc \
>      -I. -I. -I../../gcc/gcc -I../../gcc/gcc/. \
>      -I../../gcc/gcc/config -I../../gcc/gcc/../include \
>      -DL_muldi3 -c ../../gcc/gcc/libgcc2.c -o libgcc/./_muldi3.o
> 
> 
> produces the following error :
> 
> In file included from ../../gcc/gcc/config/i386/mingw32.h:31,
>                  from tconfig.h:17,
>                  from ../../gcc/gcc/libgcc2.c:36:
> ../../gcc/gcc/config/i386/cygwin.h:30:19: stdio.h: No such file or
> directory
> In file included from ../../gcc/gcc/config/i386/mingw32.h:31,
>                  from tconfig.h:17,
>                  from ../../gcc/gcc/libgcc2.c:36:
> ../../gcc/gcc/config/i386/cygwin.h:394: error: parse error before '*'
> token
> ../../gcc/gcc/config/i386/cygwin.h:394: warning: function declaration
> isn't a prototype
> ../../gcc/gcc/config/i386/cygwin.h:396: error: parse error before '*'
> token
> ../../gcc/gcc/config/i386/cygwin.h:396: warning: function declaration
> isn't a prototype
> 
> 
> Also i notice that the above command includes many dirs from
> gcc/winsup/, a dir absent from the source tarballs??
> 
> Same error when building using gcc3.04 and gcc3.2 (cvs), and using
> gcc3.1 source and gcc3.2(cvs) source.
> 
> 
> /Lars Andersen
> 
> 

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