IncrementalExecutor::executeFunction: symbol '_Z4sqrtf' unresolved

im using root 6.13
gcc Apple clang version 11.0.3 (clang-1103.0.32.62)
Python 2.7.16

recently i updated my os to the latest catalina 10.15
i then came across this error :
IncrementalExecutor::executeFunction: symbol ‘_Z4sqrtf’ unresolved while linking [cling interface function]!
You are probably missing the definition of sqrt(float)
Maybe you need to load the corresponding shared library?

is there any suggestion on how i may resolve this issue

Please read tips for efficient and successful posting and posting code

Hi @odylalalaaa,
ROOT 6.13 is quite an old version, for mac 10.15 you probably need to update to a more recent version.

Installation instructions can be found at .

I hope this helps!