I have a static library that I am building in C++. I have separated it into many header and source files. I am wondering if it's better to include all of the headers that a client of the library might need in one header file that they in turn can include in their source code or just have them include only the headers they need? Will that cause the code to be unecessary bloated? I wasn't sure if the classes or functions that don't get used will still be compiled into their products.
Thanks for any help.
In general, when linking the final executable, only the symbols and functions that are actually used by the program will be incorporated. You pay only for what you use. At least that's how the GCC toolchain appears to work for me. I can't speak for all toolchains.
If the client will always have to include the same set of header files, then it's okay to provide a "convience" header file that includes others. This is common practice in open-source libraries. If you decide to provide a convenience header, make it so that the client can also choose to include specifically what is needed.
To reduce compile times in large projects, it's common practice to include the least amount of headers as possible to make a unit compile.