Re: TI compiler

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long story short, one of my first mspgcc worked because of a bug, when
later either the bug was fixed in mspgcc or fedora (don't recall which one
exactly), things broke all over, code unusable, docs I had share were
wrong.
But by then I was already married to the MSP430 chips, so I stayed for the
ride, and am generally happy with my choice, though that ESP that uses
arduino code and has full wifi at a cost of around one US dollar per has
more than once made me look again. :-) (but it eats battery power, so
again, MSP430 is better, at least for me)

On Fri, Mar 3, 2017 at 12:30 PM, DJ Delorie <[email protected]> wrote:

>
> This has come up before, and here's what's going on... the new
> msp430-elf-gcc includes all the code required by the standard, partly
> because... well, standards... and partly so that the testsuite can test
> everything.  The old msp-gcc made lots of assumptions about how the
> compiler would actually be used, and "pre-optimized" the runtime for it.
>
> So you end up with things like "argv handling" when there's no command
> line, or "exit closes files" when you never exit.  A big change is using
> a float-enabled printf when you don't need it.
>
> I put some notes here, way back when, but they're old, and IIRC it's
> been improved even more since then:
>
> http://people.redhat.com/~dj/msp430/size-optimizations.html
>
> Also, you can use "msp430-elf-gcc -mintr ..." to minimize the runtime
> support.
>
> Also, if you're REALLY constrained to size, you might consider getting
> the crt0.S source file from newlib and modifying it yourself to really
> strip out the parts you don't need.  Most embedded code really only
> needs to set up the stack and watchdog, then jump to main().
>
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