Re: Mips cross compiler for cygwin

[Bill Gatliff <bgat at billgatliff dot com>]

Steve:


In the --prefix directory, the installation process creates a directory 
called sys-include.  You want to nuke that directory after installation, 
because sometimes I have observed that gcc will get (erroneous) headers 
from _that_ directory instead of the usual place.  Haven't tracked down 
the root problem.

All GNU toolchains should nuke sys-include during the build process, as 
far as I can tell.


b.g.


Steve Sanders wrote:

> Bill,
>
> Could you elaborate about nuking sys-include after building the bootstrap
> loader? I have been trying to build a cross tool for arm7tdmi with some
> success using your article as a starting point. Is this an appropriate thing
> to do for building the arm tool chain?
>
> Steve
>
>
> -----Original Message-----
> From: crossgcc-owner@sources.redhat.com
> [mailto:crossgcc-owner@sources.redhat.com]On Behalf Of Bill Gatliff
> Sent: Tuesday, March 16, 2004 1:53 PM
> To: Harry Kaes
> Cc: crossgcc@sources.redhat.com
> Subject: Re: Mips cross compiler for cygwin
>
>
> Harry:
>
>
> [Just happened to catch me at my desk!]
>
> Make sure you nuke sys-include at the end of the bootstrap build, before
> you build newlib or the "complete" gcc.
>
>
> See if that helps,
>
>
> b.g.
>
> Harry Kaes wrote:
>
>  
>
> > Kaes Harry wrote
> >
> >
> >    
> >
> > > In the meantime I continued my attempts to build the cross compiler
> > > following the instructions by Bill Gatliff. For this build I'm using gcc
> > > sources 3.3.3, binutils 2.14 and newlib 1.12.0. I'm able to compile the
> > > binutils (well, I don't get any errors anyway), as well as the newlib
> > > library and the bootstrap cross compiler. I created a directory gcc on the
> > >
> > >
> > >      
> > c
> >
> >
> >    
> >
> > > drive and put the gcc sources in a subdirectory gcc-sources, the binutils
> > > sources in binutils-2.14 and the newlib sources in newlib-1.12.0. I made
> > > four directories (again as subdirectories of c:\gcc) to perform the builds
> > > in : build-gcc (for the bootstrap compiler), build-newlib, build-binutils
> > > and build-gcc-final (for the actual cross compiler). I compiled the
> > > different sources in this order :
> > >
> > >      
> > >
> > > from the directory build-binutils :
> >    
> >
> > >      
> > ../binutils-2.14/configure --target=mipsel-elf --host=i686-pc-cygwin --buil
> >    
> d
>  
>
> >    
> >
> > > =i686-pc-cygwin --prefix=/gcc-mips --with-gnu-as --with-gnu-ld
> > > make all install
> > >      
> > >
> > > from the directory build-gcc :
> >    
> >
> > >      
> > ../gcc-sources/configure --target=mipsel-elf --host=i686-pc-cygwin --build=
> >    
> i
>  
>
> > 686-pc-cygwin --prefix=/gcc-mips --with-gnu-as --with-gnu-ld --without-head
> >    
> e
>  
>
> >    
> >
> > > rs --with-newlib -v
> > > make all-gcc install-gcc
> > >      
> > >
> > > from the directory build-newlib :
> >    
> >
> > >      
> > ../newlib-1.12.0/configure --target=mipsel-elf --host=i686-pc-cygwin --buil
> >    
> d
>  
>
> >    
> >
> > > =i686-pc-cygwin --prefix=/gcc-mips --with-gnu-as --with-gnu-ld
> > > make all install
> > >      
> > >
> > > from the directory build-gcc-final :
> >    
> >
> > >      
> > ../gcc-sources/configure --target=mipsel-elf --host=i686-pc-cygwin --build=
> >    
> i
>  
>
> >    
> >
> > > 686-pc-cygwin --prefix=/gcc-mips --with-gnu-as --with-gnu-ld -v
> > > make all install
> > >
> > > Running this final make to build the actual cross compiler results in an
> > > error while executing the following command :
> > >
> > >
> > >
> > >
> > >      
> > /cygdrive/c/gcc/build-gcc-final/gcc/xgcc -shared-libgcc -B/cygdrive/c/gcc/b
> >    
> u
>  
>
> > ild-gcc-final/gcc/ -nostdinc++ -L/cygdrive/c/gcc/build-gcc-final/mipsel-elf
> >    
> /
>  
>
> > soft-float/libstdc++-v3/src -L/cygdrive/c/gcc/build-gcc-final/mipsel-elf/so
> >    
> f
>  
>
> > t-float/libstdc++-v3/src/.libs -B/gcc-mips/mipsel-elf/bin/ -B/gcc-mips/mips
> >    
> e
>  
>
> >    
> >
> > > l-elf/lib/ -isystem
> > >
> > >
> > >
> > >      
> > /gcc-mips/mipsel-elf/include -msoft-float -I../../../../../gcc-sources/libs
> >    
> t
>  
>
> > dc++-v3/../gcc -I../../../../../gcc-sources/libstdc++-v3/../include -I/cygd
> >    
> r
>  
>
> > ive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/mipsel
> >    
> -
>  
>
> > elf -I/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/in
> >    
> c
>  
>
> > lude -I../../../../../gcc-sources/libstdc++-v3/libsupc++ -g -O2 -msoft-floa
> >    
> t
>  
>
> >    
> >
> > > -fno-implicit-templates -Wall -Wno-format -W -Wwrite-strings -fdiagnostic
> > >
> > >
> > >      
> > s-
> >
> >
> >    
> >
> > > show-location=once -c
> > > ../../../../../gcc-sources/libstdc++-v3/libsupc++/eh_alloc.cc -o
> > >
> > >
> > >      
> > eh_alloc.o
> >
> >
> >    
> >
> > > The resulting error is :
> > >
> > > In file included from
> > > ../../../../../gcc-sources/libstdc++-v3/libsupc++/eh_alloc
> > > .cc:33:
> > >
> > >
> > >
> > >      
> > /cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
> >    
> c
>  
>
> >    
> >
> > > stdl
> > > ib:86: error: `
> > >  div_t' not declared
> > >
> > >
> > >
> > >      
> > /cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
> >    
> c
>  
>
> >    
> >
> > > stdl
> > > ib:87: error: `
> > >  ldiv_t' not declared
> > >
> > >
> > >
> > >      
> > /cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
> >    
> c
>  
>
> >    
> >
> > > stdl
> > > ib:97: error: `
> > >  div' not declared
> > >
> > >
> > >
> > >      
> > /cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
> >    
> c
>  
>
> >    
> >
> > > stdl
> > > ib:102: error: `
> > >  ldiv' not declared
> > >
> > >
> > >
> > >      
> > /cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
> >    
> c
>  
>
> >    
> >
> > > stdl
> > > ib:104: error: `
> > >  mblen' not declared
> > >
> > >
> > >
> > >      
> > /cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
> >    
> c
>  
>
> >    
> >
> > > stdl
> > > ib:105: error: `
> > >  mbstowcs' not declared
> > >
> > >
> > >
> > >      
> > /cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
> >    
> c
>  
>
> >    
> >
> > > stdl
> > > ib:106: error: `
> > >  mbtowc' not declared
> > >
> > >
> > >
> > >      
> > /cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
> >    
> c
>  
>
> >    
> >
> > > stdl
> > > ib:115: error: `
> > >  wcstombs' not declared
> > >
> > >
> > >
> > >      
> > /cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
> >    
> c
>  
>
> >    
> >
> > > stdl
> > > ib:116: error: `
> > >  wctomb' not declared
> > >
> > >
> > >
> > >      
> > /cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
> >    
> c
>  
>
> >    
> >
> > > stdl
> > > ib:122: error: syntax
> > >  error before `(' token
> > > make[6]: *** [eh_alloc.lo] Error 1
> > > make[6]: Leaving directory
> > > `/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-floa
> > > t/libstdc++-v3/libsupc++'
> > > make[5]: *** [all-recursive] Error 1
> > > make[5]: Leaving directory
> > > `/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-floa
> > > t/libstdc++-v3'
> > > make[4]: *** [all-recursive-am] Error 2
> > > make[4]: Leaving directory
> > > `/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-floa
> > > t/libstdc++-v3'
> > > make[3]: *** [multi-do] Error 1
> > > make[3]: Leaving directory
> > > `/cygdrive/c/gcc/build-gcc-final/mipsel-elf/libstdc++
> > > -v3'
> > > make[2]: *** [all-multi] Error 2
> > > make[2]: Leaving directory
> > > `/cygdrive/c/gcc/build-gcc-final/mipsel-elf/libstdc++
> > > -v3'
> > > make[1]: *** [all-recursive-am] Error 2
> > > make[1]: Leaving directory
> > > `/cygdrive/c/gcc/build-gcc-final/mipsel-elf/libstdc++
> > > -v3'
> > > make: *** [all-target-libstdc++-v3] Error 2
> > >
> > > To attempt a little debugging I concentrated on the first error : 'div_t'
> > > not declared. I found some stdlib.h files scattered over the different
> > > directories in which this define could be found. The stdlib.h file used by
> > > this last command however, was the stdlib.h file in the directory
> > > c:\gcc\build-gcc-final\gcc\include which of course did not contain a
> > > declaration of div_t.
> > >
> > > Does anyone have an idea of what goes wrong?
> > >
> > > Harry Kaes.
> > >
> > >
> > >
> > >      
> > I tried to find a solution for the problem in the archives of the mailing
> > list and luckily I found a few mails concerning this problem. In most of
> >    
> the
>  
>
> > cases, the solution is to delete the invalid stdlib.h file, so that gcc
> > automatically takes the correct one (of the newlib sources) in a 'standard'
> > directory. I found the descriptions of the solutions somewhat unclear
> > however and I found myself unable to apply them to my situtation. The
> > biggest problem is of course my lack of knowledge about the whole cross
> > compiling system.
> > If I follow the guidelines as described in
> > http://sources.redhat.com/ml/crossgcc/2003-09/msg00104.html, I arrive at
> >    
> the
>  
>
> > point where I should delete de stdlib.h file, but I am unable to find it in
> > the directory as described in that message.
> >
> > Can anyone give a clearer view on the solution for this problem?
> >
> > Harry Kaes
> >
> >
> > ------
> > Want more information?  See the CrossGCC FAQ,
> >    
> http://www.objsw.com/CrossGCC/
>  
>
> > Want to unsubscribe? Send a note to crossgcc-unsubscribe@sources.redhat.com
> >
> >
> >
> >    
>
> --
> Bill Gatliff
> GNU-based embedded development, training and consulting services.
> bgat@billgatliff.com
>
>
>
>
> ------
> Want more information?  See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/
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>
>
> ------
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>
>  

--
Bill Gatliff
Embedded GNU *is* user friendly, it just chooses its friends carefully.
bgat@billgatliff.com



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