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Hello,
I wish to make my .exe as small as possible.
When I load an header file with include, for example #include math.h, does the compiler compile and include inside the exe all the functions of math.h, even those not used ?
If this is the case, it should be better tor extract the needed function manually to copy them in the source .c , isn't it ?
All the best
Pierre
Header files contain only definitions, so you can include them whether you really need them or not. The only downside is increased compilation time, and later confusion wondering why you included them in the first place.
As for the size of the executable, that's really down to the quality of the libraries involved. You may only use sin() inside your code, but you can't really control whether cos() and tan() make it into the executable. That depends on how well your libary was created in the first place.
Hello Salem
Thank you for the fast answer.
>"As for the size of the executable, that's really down to the quality of
the libraries involved. You may only use sin() inside your code, but you can't really control whether cos() and tan() make it into the executable. That depends on how well your libary was created in the first place."
Sorry if this sound naive, it's very new for me :
If I want to make my own header file, Is there something I have to put to tell the compiler not to load unused functions ?
All the best
Pierre
No. Good compilers will only load the functions necessary from the libraries referenced.Quote:
Originally Posted by PierreB
Another way is to compress the exe file itself using a program such as upx.exe