I have VM/VS2017 on an old Windows 7 box, and also on a new Win 10 box.  On my Win7 box, I can use #pragma region and #pragma endregion without generating any compiler warnings.  However, the same code on my Win10 box does generate "warning: ignoring #pragma endregion Low [-Wunknown-pragmas]" warnings.  Here's an example of usage in a project 

#pragma region LOW_POWER
	//------------------- LOW POWER OPERATION ------------------------------
	//12/03/18 added for low-power wakeup from digital pins
	/********************************************************/
	digital.pinMode(21, INPUT_PULLUP, RISING);//pin, mode, type
	digital.pinMode(22, INPUT_PULLUP, RISING);//pin, mode, type
	/********************************************************/

	/********************************************************
	 Set Low Power Timer wake up in milliseconds.
	 ********************************************************/
	timer.setTimer(5000);// milliseconds
	//------------------- LOW POWER OPERATION ------------------------------
#pragma endregion Low Power Operation Setup

 

I vaguely remember changing a compiler setting on my Win 7 box to suppress #pragma warnings, but for the life of me I cannot find where I did that.  

Anyone here have a clue where that setting is in VS2017 (community edition)?

TIA,

Frank

Can you be a little more specific?  I have no idea how or why a 'different toolchain' would affect whether or not I'm getting pragma warnings.  I've searched around quite a bit, and it seems there is a compiler option that will suppress pragma warnings, but I can't remember how I implemented that on my old machine - grrrr.

Regards,

Frank

Tim@Visual Micro wrote on Dec 12^th, 2018 at 10:40pm:


OK, that jogged my memory

Apparently I had 'Warnings for Project' UNchecked on my Win7 box, and checked on my Win10 box.  UNchecking 'Warnings for Project' suppressed the pragma (and all other) warnings.

So, I got a bit smarter (I hope) and added the '-Wno-unknown-pragmas' flag to the "extra cpp flags" line in the vMicro/Compiler/Advanced/ dialog.  This suppresses the unknown pragma warning while (hopefully) keeping other warnings enabled.

Apparently "extra cpp flags" this is a project-level setting. Any way to do this globally so all my Arduino projects have it?

TIA,

Frank