(JSON) Use Perroht by default

CMakeLists.txt

@@ -92,7 +92,7 @@ option(RUN_LARGE_SCALE_TEST "Run large scale tests" OFF)
 option(RUN_BUILD_AND_TEST_WITH_CI "Perform build and basic test with CI" OFF)
 option(BUILD_VERIFICATION "Build verification directory" OFF)
 option(USE_SORTED_BIN "Use VM space aware algorithm in the bin directory" OFF)
-option(USE_PERROHT_IN_JSON "Use Perroht in the Metall JSON" OFF)
+option(USE_PERROHT_IN_JSON "Use Perroht in the Metall JSON" ON)
 
 set(DEFAULT_VM_RESERVE_SIZE "0" CACHE STRING
         "Set the default VM reserve size (use the internally defined value if 0 is specified)")