Hi Visual micro staff,
when I use gcc (for handling Atmel ASF code) I get informative warnings, e.g.:

int32_t a;

Warning      1      unused variable 'a' [-Wunused-variable]      

I looked in settings of the project properties but it seems VM uses its own settings so even "all warnings -Wall" do not produce warnings. 
What can we do here?

Oh, btw I used Bossac together with the output window which gave me a nice progress bar. Here too, I found no switch to tweak VM.


Joachim

Sorry for the delay I am sure it is no longer relevant but useful for other to have this information. 

I looked into this and found the problem is that the arduino 1.5 config files are hard coded to -w

Visual Micro provides menu items that normally allow you to switch on verbose compile and/or warnings (see menu 'tools>visual micro'). These menu items work for Arduino 1.0.x because Visual Micro controls the build process. Warnings are displayed in the way you describe.

However arduino 1.5 is supposed to be a process that avoids hard coding by visual micro. Instead visual micro reads the build configuration from external files supplied with the arduino ide or with 3rd part custom hardware definitions.

So in theory we can not set the warnings or verbose properties of the build processes unless the arduino team publish official 1.5 properties and implement them in their platform build definitions.

That said I have added this to the visual micro dev list for review because it's a fundamental requirement to see warnings. The solution might be for us to simply replace the static -w switch with -wall in the build commands just before running them.

In the meantime you can manually edit the platform.txt below the arduinoide\hardware\arduino\avr.. folder and replace -w with -wall

This will enable warnings in both the arduino ide and in visual micro. 

After making the change re-start atmel studio or click "tools>visual micro>reload toolchains"

Thanks