ARM builds

[CRImier]

Referencing arduino/Arduino#3549 in Arduino IDE repo - this is the script that I used to compile libastyle.

[cmaglie]

LGTM, I didn't actually tried it but it should not harm anyone.

[NicoHood]

Do we have a chance that someone updates the ARM PR for arduino now?

[NicoHood]

It turns out that this "someone" is me now.

I had to compile astyle for arm now. I noticed that it gave me an error if I crosscompile the file from a linux x64 distribution. I am currently searching for a solution. We somehow need to pass the arch to the compiler. I tried -march=armv7 without success.

We should fix this, once a solution is there.

[NicoHood]

This is a solution, I just dont know how to integrate it (so linux builds dont break instead). Maybe they should add an arm folder upstream?

# The arm compiler is only required for cross compiling
sudo apt-get install gcc-arm-linux-gnueabi g++-arm-linux-gnueabi gcc-arm-linux-gnueabihf g++-arm-linux-gnueabihf

# For cross compiling change the CXX compiler flag to:
nano ./astyle-code/AStyle/build/gcc/Makefile
CXX = arm-linux-gnueabihf-g++

[cmaglie]

Adding the CXX flag here https://github.com/arduino/astyle/blob/master/arm.bash may be of any help?

Something along the line of:
http://stackoverflow.com/questions/2969222/make-gnu-make-use-a-different-compiler

[NicoHood]

I tried this, but it did not seem to overwrite the setting. Maybe I did something wrong.

[ShorTie8]

I found to be able to compile it I had to set the JAVA_HOME variable some where

JAVA_HOME=readlink -f /usr/bin/javac | sed "s:bin/javac::"

[NicoHood]

Huh? We are talking about cross compiling. What does this have to do with selecting an arm compiler?