creating a MAKE file

[jl3574]

Im having problem creating a make file in unix to run my C++ files.
i have two cpp file and 1 header file:
main.cpp main2.cpp header.h

i try to create a make file like this :
-----------------------------------------
calculate: main.cpp main2.cpp header.h
CC main.cpp main2.cpp -o myprogram
-------------------------------------------

but this does not work?
i create a make file b4 using just 1 cpp and 1 h and it works probably...
so can someone pls help me?
thx

 

[chipperMDW]

"CC" is not normally a command.

You either want to use "cc", which is a command, or "$(CC)", which is a makefile variable that expands to a command.


Also, your makefile defeats one of the purposes of using a makefile. If you only change main2.cpp, your makefile will still recompile both your source files even though only one changed.

The correct way is to have calculate depend on your two object files, and then have each of your object files depend on its respective source file and any headers that source file includes.