Need help making minimal bare metal ARM Cortex-M D program

[Mike]

On Sunday, 1 December 2013 at 06:00:08 UTC, Mike wrote:
> On Sunday, 1 December 2013 at 05:23:19 UTC, Mike wrote:
>> On Sunday, 24 November 2013 at 18:38:19 UTC, Johannes Pfau 
>> wrote:
>>> Am Sun, 24 Nov 2013 18:18:22 +0100
>>> schrieb "jerro" <a at a.com>:
>>>
>>>> It seems languages other than C are disabled for bare metal 
>>>> builds. You could try searching for cc.ini in your 
>>>> crosstool-ng installation and commenting out the line
>>>> 
>>>> if ! BARE_METAL
>>>> 
>>>> and
>>>> 
>>>> endif # ! BARE_METAL
>>>> 
>>>
>>> Good to know. I'll prepare a patch
>>> ( I'm currently implementing cross-native builds for 
>>> crosstool-NG
>>> anyway)
>>
>> Just tried again with crosstools-ng 1.19.0.  I commented out 
>> the appropriate lines in my cc.ini file, but the build failed 
>> with...
>>
>> " The following requested languages could not be built: d "
>>
>> ... in the build.log file.
>>
>> Also, the instructions here 
>> (http://gdcproject.org/wiki/Cross%20Compiler/crosstool-NG) say:
>>
>> "If druntime & phobos do not yet compile for your target you 
>> can disable them:
>>
>> Start ct-ng menuconfig, go to "C compiler" and add 
>> "--disable-libphobos" to "Core gcc extra config" and "gcc 
>> extra config". "
>>
>> While the "Core gcc extra config" option exists, "gcc extra 
>> config" does not.
>>
>> The quest continues...
>
> Thinking about this a little more, I figured the only way GCC 
> would not no about D is if the GCC sources were not 
> patched...and sure enough, I had crosstools pointing to the 
> wrong folder.  My mistake.

I was finally able to build a GDC cross compiler using GCC 4.8.2, 
the GDC 4.8 branch, and crosstools-ng 1.19.0.  However, I found 
the following errors in the instructions located here 
(http://gdcproject.org/wiki/Cross%20Compiler/crosstool-NG)

1.  The "Other Languages" option does not appear for a bare metal 
build.  You must modify the cc.ini file to make it available per 
jerro's insructions above.  Thanks jerro
2.  The "Core gcc extra config" option exists, but the "gcc extra 
config" does not.  It doesn't appear to be necessary, but I have 
yet to test this toolchain.
3.  The "Paths and misc options, Local tarballs directory" option 
does not seem to be correct.  For me, I had to go to "C Compiler" 
-> "gcc version" and choose "Custom gcc" and point crosstools-ng 
to the folder containing the merged GCC/GDC source code.

I hope this information is useful to someone.