Why are some simulation library files missing when compiling for Questasim*?

Description

Due to a problem in Simulation Library Compiler in the Quartus® Prime Standard Edition Software 23.1 and later, you may see some Quartus® Simulation Library source files not included for compilation for Siemens* Questasim* Tool selection. This problem persists on both EDA Simulation Library Compiler GUI and command line versions. This problem only exists in Quartus® Prime Standard Edition and does not affect Quartus® Prime Pro Edition versions.

Resolution

To work around this problem, follow these steps:

1. Edit file: <QUARTUS INSTALLATION DIRECTORY>/quartus/common/tcl/internal/simlib_comp.tcl

2. Replace: 

set gl(primary_tool,questasim) questasim

With:

set gl(primary_tool,questasim) modelsim

 This problem is scheduled to be fixed in a future release of the Quartus® Prime Standard Edition Software.