I cut and paste a PWM project from the internet and saved it. When I go to build it, I got neither messages indicating success or errors or warnings. It just kind of hangs there. Here's a screen shot.
I don't know what you are doing. The picture is hard to read and I can't magnify it like your previous picture. The first error message is:
ArmClang: error: unsupported option '--c99'
--c99 is a armcc (Arm Compiler 5) compatible compiler directive. You are using the ArmClang (Arm Compiler 6) and the directive should read '-std=c99'. Usually, µVision automatically uses the right directive depending on the selected compiler. I assume that --c99 is specified in the µVision dialog 'Options for Target - C/C++ (AC6) - Misc Controls'. If yes, remove it from there and select c99 in the 'Language C' selection.
The second error '… Assembler.… Symbol missing..' probably comes from a wrong assembler directive. Please check the µVision dialog 'Options for Target - Asm - Assembler Option' and select 'armclang (Auto Select)'. Hope this helps.
I assume that this example was initially created for the Arm Compiler 5. There are several things to consider when such a project is converted to the Arm Compiler 6.