Re: Building on MinGW using MXE-built dependencies [WAS: Re: mxe-installer try 2]

[John W. Eaton]

On 06/02/2013 08:30 AM, Clemens Buchacher wrote:
> On Tue, May 28, 2013 at 05:36:21PM -0400, John W. Eaton wrote:
> > If you want to attempt a native build, edit the settings at the top
> > of the top-level Makefile.
>
> Thank you. This will be very useful. I am trying this on RHEL 5.8 with:
>
> MXE_SYSTEM := gnu-linux
> MXE_NATIVE_BUILD := yes
> USE_SYTEM_GCC := no
>
> But I get the following error while building gcc:
>
> /home/drizzd/src/mxe-octave/tmp-gcc/gcc-4.7.2.build/./gcc/xgcc 
> -B/home/drizzd/src/mxe-octave/tmp-gcc/gcc-4.7.2.build/./gcc/ 
> -B/home/drizzd/src/mxe-octave/usr/x86_64-unknown-linux-gnu/bin/ 
> -B/home/drizzd/src/mxe-octave/usr/x86_64-unknown-linux-gnu/lib/ -isystem 
> /home/drizzd/src/mxe-octave/usr/x86_64-unknown-linux-gnu/include -isystem 
> /home/drizzd/src/mxe-octave/usr/x86_64-unknown-linux-gnu/sys-include    -g -O2 
> -m32 -O2  -g -O2 -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual 
> -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition  -isystem 
> ./include   -fpic -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector   
> -fpic -I. -I. -I../../.././gcc 
> -I/home/drizzd/src/mxe-octave/tmp-gcc/gcc-4.7.2/libgcc 
> -I/home/drizzd/src/mxe-octave/tmp-gcc/gcc-4.7.2/libgcc/. 
> -I/home/drizzd/src/mxe-octave/tmp-gcc/gcc-4.7.2/libgcc/../gcc 
> -I/home/drizzd/src/mxe-octave/tmp-gcc/gcc-4.7.2/libgcc/../include 
> -I/home/drizzd/src/mxe-octave/tmp-gcc/gcc-4.7.2/libgcc/config/libbid 
> -DENABLE_DECIMAL_BID
_FORMAT -
DHAVE_CC_TLS  -DUSE_TLS -o unwind-dw2.o -MT unwind-dw2.o -MD -MP -MF 
unwind-dw2.dep -fexceptions -c 
/home/drizzd/src/mxe-octave/tmp-gcc/gcc-4.7.2/libgcc/unwind-dw2.c 
-fvisibility=hidden -DHIDE_EXPORTS
> In file included from 
> /home/drizzd/src/mxe-octave/tmp-gcc/gcc-4.7.2/libgcc/gthr.h:150:0,
>                   from 
> /home/drizzd/src/mxe-octave/tmp-gcc/gcc-4.7.2/libgcc/unwind-dw2.c:38:
> ./gthr-default.h:541:21: fatal error: windows.h: No such file or directory
> compilation terminated.
> make[7]: *** [unwind-dw2.o] Error 1
> make[7]: Leaving directory 
> `/home/drizzd/src/mxe-octave/tmp-gcc/gcc-4.7.2.build/x86_64-unknown-linux-gnu/32/libgcc'

That error happens because there are some configure options in the 
src/gcc.mk file that only make sense for Windows systems.  I'm working 
on a patch that fixes that problem, but even so, I have not been 
successful building GCC and then using it to build Octave for on any 
system other than cross MinGW.

jwe