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Normal Topic Patching gcc (Read 3502 times)
nevereven
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Patching gcc
Mar 27th, 2015 at 4:37pm
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I hope this is the right place to ask this.
So I've been struggling with a gcc bug in several of my projects where I get the error:
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"C:\Arduino\arduino-1.6.1/hardware/tools/avr/bin/avr-gcc" -w -Os -Wl,--gc-sections -mmcu=atmega2560 -o

...

ore.a" " -lm
libc.a(isspace.o)*:In function `isspace'
(.text.avr-libc+0x2)*:relocation truncated to fit: R_AVR_13_PCREL against symbol `__ctype_isfalse' defined in .text.avr-libc section in \avr\lib\avr6\libc.a(cty_isfalse.o)
collect2.exe*:error: ld returned 1 exit status
Error creating .elf

It seems I may be running up against AVR C Runtime Library Bug 33698 http://savannah.nongnu.org/bugs/?33698.
This bug seems to have been around for a long time. Fortunately it looks like there is a patch which might help.

What I can't figure out is how to apply the patch. All my searching leads to solutions on linux, but that doesn't help me on Windows.

I have a .patch file, but don't know what to do with it. I've got software to deliver to a customer, but can't compile it.
« Last Edit: Mar 27th, 2015 at 4:38pm by nevereven »  
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Tim@Visual Micro
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Re: Patching gcc
Reply #1 - Mar 27th, 2015 at 4:42pm
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Hi,

Whatever the solution it needs to be applied to the tool chain shipped with the Arduino Ide. This means you need to patch the Arduino Ide and not Visual Micro.

Therefore I suggest asking the question in the arduino.cc/forum

Sorry I can't be of more help.
  
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nevereven
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Re: Patching gcc
Reply #2 - Mar 27th, 2015 at 7:22pm
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Thanks, half the problem is figuring out the right place and the right questions.
  
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