RE: Newlib port for new architecture

[<Varun dot Kumar at infineon dot com>]

Hello Sebastian,

Thanks for your suggestion. I moved to Ubuntu env on a VM, and I could easily build the library for arm -none-eabi  with  "--disable-newlib-supplied-syscalls" option.

Now, I am starting to add changes necessary to support tricore architecture. For basic support, my understanding is that following need to be updated:
- "newlib" configure.ac file [to add target option]
- low level code for  setjmp and longjmp.
- add configure.in/.ac @ libc/machine/"tricore target folder name"
- update ieee headers, setjmp buffer size header, /sys/config header, 
=>As I understand libgloss porting is not necessary as first step. Please correct me if I am wrong...

From community side, I have couple of questions:
- Would somebody in community, be generous enough to peer-review my changed files?
- Once build is successful, Is there any formal procedure required to push the updated code back to git-repo?    [this is needed later]

Thanks again!!!


Many Regards,

Varun Kumar

Staff Engineer IFIN ATV SW
Infineon Technologies India Pvt Ltd
Tel.: +91 80 3927 1086
varun.kumar@infineon.com

Part of your life. Part of tomorrow

-----Original Message-----
From: Sebastian Huber [mailto:sebastian.huber@embedded-brains.de] 
Sent: Monday, July 11, 2016 11:06 AM
To: Kumar Varun (IFIN ATV MC SW DEV EP); newlib@sourceware.org
Subject: Re: Newlib port for new architecture

Hello Varun,

I would not use a Windows host to do this work. Its probably much times faster if you do this on a Linux machine. I would also use a Git clone of Newlib to do the development.

On 09/07/16 10:39, Varun.Kumar@infineon.com wrote:
> Hi,
>
> I am using Cygwin to configure the newlib in windows environment [ I 
> wanted to check if build for arm is working before I start porting code for tricore arch] I am trying to use pre-built gcc image of arm [SysGCC ] for trial purpose. It is added in path variable, still not getting recognized.  Attaching the logfile also.
>
> Any help would be appreciated!!!
>
> ===============================================
> kumavaru@BLR 
> /cygdrive/c/Varun/01_Work/23_eLuaPort/newlib/newlib-m68-aout
> $ ../newlib-cygwin/configure  --target=arm-eabi checking build system 
> type... i686-pc-cygwin checking host system type... i686-pc-cygwin 
> checking target system type... arm-unknown-eabi checking for a 
> BSD-compatible install... /usr/bin/install -c checking whether ln 
> works... yes checking whether ln -s works... yes checking for a sed 
> that does not truncate output... /usr/bin/sed checking for gawk... 
> gawk checking to see if cat works as expected... yes checking for 
> gcc... no checking for cc... no checking for cl.exe... no
> configure: error: in `/cygdrive/c/Varun/01_Work/23_eLuaPort/newlib/newlib-m68-aout':
> configure: error: no acceptable C compiler found in $PATH See 
> `config.log' for more details.
> =========================================

It seems you need a native GCC installed. I would really use a Linux machine, just select the C/C++/kernel development packages and everything should be available.

--
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