µVISION: error: unknown Type Name

Information in this knowledgebase article applies to:

• Keil MDK 5
• Arm Compiler 6

SYMPTOM

My project is configured for Arm Compiler 6. 

Despite the project build results in 0 Error (s) - 0 Warning (s),  µVision's Dynamic Syntax Checking reports an error in a header file:

error: unknown type name ...

CAUSE

µVision's Dynamic Syntax Checking currently has two shortcomings for header files:

• The header files are analyzed like a separate C source file. Definitions may be missing which usually come from other header files that are included in the C/C++ file before.

• The header files are always analyzed as a C and not as a C++ file, even if they depend on a *.cpp file.

MORE INFORMATION

• Refer to Dynamic Syntax Checking in the µVision User's Guide.

Last Reviewed: Friday, October 16, 2020