disable printf

[kldang]

I don't know if it's the right place to post this questions. However, any help will be appreciated.

I am working on a Memory Footprint Reduction project. I came across an
idea to disable all printf statements so that less memory is required.
In addition, when there is no single printf statement, the printf
library will not be linked, so it further reduces the executable size.
Is there an easy way to disable printf in a large project? In my
project, we have thousands of C & C++ files. They don't have a common
included common header. Otherwise, I can do a #define printf(x) in the
common header. I am using GNU GCC compiler and run the program in both
Linux and VxWorks platform.

Any of you have a suggestion on disabling all printf statements?

I also think about to add a common header file into the whole project.
However, I would need to put a #include "common.h" line into each c
file. It's gonna take a while to do that. Is there any way to insert
the line automatically into each c file?

 

[kamper]

printf is in libc. I'm pretty sure you aren't going to get rid of that. And if you really want to get rid of all print statements (can you seriously do that without f'ing up logging or whatever you use it for?) the best way is probably to #ifdef them out. I'd bet large amounts of money it won't make any difference whatsoever though.

If you want to just blindly put a #include at the top of each file you could script it pretty easily.

 

[kldang]

In linux/unix, is there anyway to add the #include line to all c or cpp files automatically?

 

[Thyme]

Yes. Look up a shell scripting tutorial.