C ++使用外壳命令WINDOWS的输出定义宏/ D

Question

I am trying to define a macro that gets the output of a shell command, just like in Linux when using gcc and passing arguments like:
gcc ... -DSEED=$(date +%s)
This is what I tried just for testing purposes:
/DTEST=$(echo 5)
Is it even possible to do something like this in vs2017 ?

Answer 1

Yes/No/Maybe/I don't know.

int main() { return RET; }

is a valid program compiled with

/DRET=0

Live demo

Now you need to invoke your compiler in a way such that 0 is replaced by whatever value you want, but this is well outside the scope of C++.

What about bash for windows + CMake?