Add double ticks to cmake messages.
Hi,
during installation via python3.7 setup.py install
I noticed errors thrown by the cmake setup, such as
CMake Error at src/CMakeLists.txt:60 (message):
message called with incorrect number of arguments
In this PR, I added double ticks to the corresponding message
statements in src/CMakeLists.txt
, which fixes the error.
Cheers, Marcel