~ruther/qmk_firmware

0d5a8b048a62aebdf5a699cae367dc0dd063d4e7 — Evan Travers 7 years ago 978fa70 
Instruct macos users to use avr-gcc@7 (#3337)

If you run `brew install avr-gcc`, you get a version that has
compatibility issues with LUFA. I updated the getting started guide for
osx, the qmk_install setup script, and added a section to the FAQ for
folks like me who accidentally updated avr-gcc past 7.
patch browse .tar.gz 
3 files changed, 16 insertions(+), 2 deletions(-)

M docs/faq_build.md
M docs/getting_started_build_tools.md
M util/macos_install.sh

M docs/faq_build.md => docs/faq_build.md +14 -0
@@ 104,3 104,17 @@ brew install dfu-programmer
brew install gcc-arm-none-eabi
brew install avrdude
```

### avr-gcc 8.1 and LUFA

If you updated your avr-gcc to above 7 you may see errors involving LUFA. For example:

`lib/lufa/LUFA/Drivers/USB/Class/Device/AudioClassDevice.h:380:5: error: 'const' attribute on function returning 'void'`

For now, you need to rollback avr-gcc to 7 in brew.

```
brew uninstall --force avr-gcc
brew install avr-gcc@7
brew link avr-gcc@7
```


M docs/getting_started_build_tools.md => docs/getting_started_build_tools.md +1 -1
@@ 56,7 56,7 @@ If you're using [homebrew,](http://brew.sh/) you can use the following commands:
    brew tap osx-cross/avr
    brew tap PX4/homebrew-px4
    brew update
    brew install avr-gcc
    brew install avr-gcc@7
    brew install dfu-programmer
    brew install gcc-arm-none-eabi
    brew install avrdude


M util/macos_install.sh => util/macos_install.sh +1 -1
@@ 22,4 22,4 @@ fi
brew tap osx-cross/avr
brew tap PX4/homebrew-px4
brew update
brew install avr-gcc gcc-arm-none-eabi dfu-programmer avrdude
brew install avr-gcc@7 gcc-arm-none-eabi dfu-programmer avrdude