Compiling gcc with sparc-elf target

Compiling gcc with sparc-elf target

[alsp]

Hi,

I would like to compile a version of gcc using the sparc-elf target. I have
successfully managed to compile gcc by using the --host=mingw32 and
--target=mingw32 configure flags. When I change the target to be sparc-elf
and run Make, I get this error: "/bin/sh: sparc-elf-gcc: command not found".

I am compiling under msys on Windows 7 and have installed the various
prerequisites: Binutils, Flex, Bison, GMP, MPFR and MPC.

Here is my full configure command:
../gcc_4_3_0_release_src/configure --prefix=/sparc-gcc --host=mingw32
--target=sparc-elf --program-prefix=""
--with-lib-path=/mingw/mingw32/lib:/mingw/lib:/usr/local/lib:/lib:/usr/lib
--with-gcc --with-gnu-as --with-gnu-ld --disable-nls --disable-shared
--enable-languages=c,c++

Does anyone have any ideas?

I can provide further details if that would help but wanted to start with
the basics.

Best regards,
Alan
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Re: Compiling gcc with sparc-elf target

[Andrew Haley]

On 01/06/2011 01:28 PM, alsp wrote:
>
> I would like to compile a version of gcc using the sparc-elf target. I have
> successfully managed to compile gcc by using the --host=mingw32 and
> --target=mingw32 configure flags. When I change the target to be sparc-elf
> and run Make, I get this error: "/bin/sh: sparc-elf-gcc: command not found".

When?  Early on, or when building target libraries?

Andrew.

Re: Compiling gcc with sparc-elf target

[Ian Lance Taylor]

alsp <alansparkstar@gmail.com> writes:

> I am compiling under msys on Windows 7 and have installed the various
> prerequisites: Binutils, Flex, Bison, GMP, MPFR and MPC.
>
> Here is my full configure command:
> ../gcc_4_3_0_release_src/configure --prefix=/sparc-gcc --host=mingw32
> --target=sparc-elf --program-prefix=""
> --with-lib-path=/mingw/mingw32/lib:/mingw/lib:/usr/local/lib:/lib:/usr/lib
> --with-gcc --with-gnu-as --with-gnu-ld --disable-nls --disable-shared
> --enable-languages=c,c++
>
> Does anyone have any ideas?

I think you need to add --build=mingw32.  That should at least get you
to a different problem.

Ian

Re: Compiling gcc with sparc-elf target

[alsp]

Ian Lance Taylor-3 wrote:
> 
> 
> I think you need to add --build=mingw32.  That should at least get you
> to a different problem.
> 
> 

Thanks Ian,

Sorry for the delay in responding.

I have now tried adding --build=mingw32 to my configure command. I am indeed
getting a different error now:

checking for sparc-elf-gcc... /d/Development/gcc/gcc_4_3_0_release_o
bj/./gcc/xgcc -B/d/Development/gcc/gcc_4_3_0_release_obj/./gcc/ -B/s
parc-gcc/sparc-elf/bin/ -B/sparc-gcc/sparc-elf/lib/ -isystem
/sparc-gcc/sparc-el
f/include -isystem /sparc-gcc/sparc-elf/sys-include
checking for suffix of object files... configure: error: cannot compute
suffix o
f object files: cannot compile

I'm also working through a slightly different process for compiling gcc and
noticed that it is compiling binutils with the sparc-elf target. This is not
something that I was doing and may or not be an influencing factor (mine was
compiled for mingw32)?

Alan

P.S. In response to Andrew's question. It was failing very late in the
compile and I assume that it was building the target libraries.
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Re: Compiling gcc with sparc-elf target

[Jonathan Wakely]

On 10 January 2011 14:01, alsp wrote:
>
> I have now tried adding --build=mingw32 to my configure command. I am indeed
> getting a different error now:
>
> checking for sparc-elf-gcc... /d/Development/gcc/gcc_4_3_0_release_o
> bj/./gcc/xgcc -B/d/Development/gcc/gcc_4_3_0_release_obj/./gcc/ -B/s
> parc-gcc/sparc-elf/bin/ -B/sparc-gcc/sparc-elf/lib/ -isystem
> /sparc-gcc/sparc-el
> f/include -isystem /sparc-gcc/sparc-elf/sys-include
> checking for suffix of object files... configure: error: cannot compute
> suffix o
> f object files: cannot compile

You'll need to look in the relevant config.log to see more details
about what failed.  A likely suspect is that a prerequisite lib such
as libgmp.so can't be found by the dynamic linker.

Re: Compiling gcc with sparc-elf target

[Kai Ruottu]

10.1.2011 16:01, alsp kirjoitti:

> checking for sparc-elf-gcc... /d/Development/gcc/gcc_4_3_0_release_o
> bj/./gcc/xgcc -B/d/Development/gcc/gcc_4_3_0_release_obj/./gcc/ -B/s
> parc-gcc/sparc-elf/bin/ -B/sparc-gcc/sparc-elf/lib/ -isystem
> /sparc-gcc/sparc-el
> f/include -isystem /sparc-gcc/sparc-elf/sys-include
> checking for suffix of object files... configure: error: cannot compute
> suffix o
> f object files: cannot compile
>
> I'm also working through a slightly different process for compiling gcc and
> noticed that it is compiling binutils with the sparc-elf target. This is not
> something that I was doing and may or not be an influencing factor (mine was
> compiled for mingw32)?

Is this kind of "clean room" approach really necessary?  The
alternative would be to download some existing 'sparc-elf'
targeted toolchain for MinGW host from the net, then look what
it includes and so learn what on earth to build, the toolchain
docs probably telling also how to reinvent the wheel via doing
the same build oneself... For instance :

http://www.gaisler.com/cms/index.php?option=com_content&task=view&id=147&Itemid=31

Re: Compiling gcc with sparc-elf target

[Kai Ruottu]

10.1.2011 21:43, Kai Ruottu kirjoitti:

> http://www.gaisler.com/cms/index.php?option=com_content&task=view&id=147&Itemid=31

ftp://gaisler.com/gaisler.com/bcc/bin/windows/

has the MinGW-hosted binaries, but built on Linux like :

C:\opt\sparc-elf-4.4.2-mingw\bin>sparc-elf-gcc -v
Using built-in specs.
Target: sparc-elf
Configured with: ../gcc-4.4.2/configure --target=sparc-elf 
--host=i686-mingw32 -
-build=i486-slackware-linux-gnu 
--prefix=/usr/devel/prj/bcc/toolchains/sparc-elf
-4.4.2-1.0.36b-mingw 
--with-gmp=/usr/devel/prj/bcc/gcc-4.4.2-mingw-1.0.36bgmp-4.
2.4-install 
--with-mpfr=/usr/devel/prj/bcc/gcc-4.4.2-mingw-1.0.36bmpfr-2.4.1-ins
tall --with-gnu-as --with-gnu-ld --verbose --enable-languages=c,c++ 
--disable-sh
ared --disable-nls --with-pkgversion='BCC 4.4.2 release 1.0.36b' 
--with-newlib -
-with-cpu=leon
Thread model: single
gcc version 4.4.2 (BCC 4.4.2 release 1.0.36b)

Re: Compiling gcc with sparc-elf target

[alsp]

Kai Ruottu-3 wrote:
> 
> 
> Is this kind of "clean room" approach really necessary?  The
> alternative would be to download some existing 'sparc-elf'
> targeted toolchain for MinGW host from the net, then look what
> it includes and so learn what on earth to build, the toolchain
> docs probably telling also how to reinvent the wheel via doing
> the same build oneself... For instance :
> 
> http://www.gaisler.com/cms/index.php?option=com_content&task=view&id=147&Itemid=31
> 
> 

Thanks for the suggestion. I was hoping that it would be a lot simpler to
compile a "bare-metal" version of GCC. However, I now realize that it is a
bit of a minefield of different versions and configuration options.

Will take a look.

Alan
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