Specifying pdb symbol file path in cmake

I want to change the path of the pdb symbol file according to this doc and install /PDBALTPATH:%_PDB%

. However, if I write

set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} /DEBUG
    /OPT:REF /OPT:ICF /PDBALTPATH:%_PDB%")

      

        
        
        
      

    

and check the result in the project properties it reads /PDBALTPATH:%%_PDB%%

. Leaving the percentage, output the results to /PDBALTPATH:_PDB

.

How to achieve /PDBALTPATH:%_PDB%

?

The patterns I've tried so far (they all turn% into %%):

• /PDBALTPATH:%_PDB%
  
  
• /PDBALTPATH:_PDB
  
  
• /PDBALTPATH:%25_PDB%25
  
  
• /PDBALTPATH:%%_PDB%%