Re: GCC plugin for avr-gcc

On 29/07/14 01:15, Sandeep K Chaudhary wrote:
> Hi Jeremy !
> 
> Thanks a lot for your reply ! Please see my reply inline.
> 
Hi Sandeep,

Comments below

<snip>
> 
> Here is the output of "gcc -v" :
> 
> sandeep@ubuntu:~/ispec$ gcc -v
> Using built-in specs.
> COLLECT_GCC=gcc
> COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
> Target: x86_64-linux-gnu
> Configured with: ../src/configure -v --with-pkgversion='Ubuntu
> 4.8.2-19ubuntu1'
> --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs
> --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
> --program-suffix=-4.8 --enable-shared --enable-linker-build-id
> --libexecdir=/usr/lib --without-included-gettext
> --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8
> --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
> --enable-libstdcxx-debug --enable-libstdcxx-time=yes
> --enable-gnu-unique-object --disable-libmudflap --enable-plugin
> --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk
> --enable-gtk-cairo
> --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre
> --enable-java-home
> --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64
> --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64
> --with-arch-directory=amd64
> --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc
> --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
> --with-multilib-list=m32,m64,mx32 --with-tune=generic
> --enable-checking=release --build=x86_64-linux-gnu
> --host=x86_64-linux-gnu --target=x86_64-linux-gnu
> Thread model: posix
> gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
> 
> "--enable-shared" is configured here. Is this what you meant? Please
> let me know.

The important bit is "--enable-plugin", so you appear to have plugins
enabled.
> 
>>
>> However...
>>
>> While the interface for initializing a plugin is well defined, plugins
>> inherently use internal APIs and these are not stable. In the MAGEEC
>> plugin you'll see a lot of #ifdefs with the GCC minor version numbers.
>>
>> If you are doing this sort of work, I suggest you just use mainline GCC.
>> Then you can be sure you are using the latest version.
>>
>>> Can someone please tell me when we can expect to have the plugin
>>> support in avr-gcc? Also, is there some way to get around this problem
>>> i.e. somehow being able to use the plugin option with current avr-gcc?
>>>
>>> It would be a great help if I can get the plugin option to work with avr-gcc.
>>
>> I believe it is working. Have a look at the code for MAGEEC to see how
>> we use it. It's on GitHub:
>>
>>   https://github.com/mageec/mageec
>>
>> (I demonstrated this at the GNU Tools Cauldron last weekend. The talk
>> and video should be up in a couple of weeks).
> 
> Yes, I am looking at this code. In case of questions, will get back to you.

I'll be happy to help. There is also a mailing list for the MAGEEC
project, and feel free to ask for advice there if you wish.

Best wishes,


Jeremy

-- 
Tel:      +44 (1590) 610184
Cell:     +44 (7970) 676050
SkypeID: jeremybennett
Twitter: @jeremypbennett
Email:   [email protected]
Web:     www.embecosm.com