我的貓是最可愛的貓 : D
clang VS gcc
when return boolean, such as:
bool Init(){
// do something
}
in gcc you can return nothing, but in clang you must return a boolean value. Or clang will throw segmentation fault
Code must be:
bool Init(){
// do something
return true; //or return false
}
How to replace gcc with clang in unix
-
first install llvm and clang:
sudo apt install llvm sudo apt insatll clang -
change default c++
for cpp:
sudo update-alternatives --config c++ There are 2 choices for the alternative c++ (providing /usr/bin/c++). Selection Path Priority Status ------------------------------------------------------------ 0 /usr/bin/g++ 20 auto mode 1 /usr/bin/clang++ 10 manual mode * 2 /usr/bin/g++ 20 manual mod Press enter to keep the current choice[*], or type selection number: 1c in the same way:
sudo update-alternatives --config cc There are 2 choices for the alternative cc (providing /usr/bin/cc). Selection Path Priority Status ------------------------------------------------------------ 0 /usr/bin/gcc 20 auto mode 1 /usr/bin/clang 10 manual mode * 2 /usr/bin/gcc 20 manual mode Press <enter> to keep the current choice[*], or type selection number: 1 update-alternatives: using /usr/bin/clang to provide /usr/bin/cc (cc) in manual modeOK, Now you use clang instead of gcc/g++
