How to set the usage requirements (includes) for current project

Code
1

Hello,

I have a library project, whose code and the main CMakeLists.txt are a src directory.
The root contains a CMakeLists.txt with some general settings and the install() stuff.

Thanks to the install() commands, the clients have to include .h as I wish (MyLib is added by the install process):
#include <MyLib/SubDir/SomeFile.h

But I’d like also the MyLib sources can include the .h in the same way (even if there is not MyLib directory). I suppose I should use ALIAS, but I am not sure how to use it.

Note my sources are defined by FILE SET, so I don’t use the target_include_directories() command.

2

I don’t think that’s possible, and it’s definitely not something CMake could do on its own. How #include directives are processed is up to the compiler (its preprocessor, to be exact). If there is a way to “fake” directories in #include directives, it will be documented in the compiler’s docs.

3

Use the same directory structure in your source tree that you want to use when installed. That is basically what the FILE_SET functionality is assuming you are doing, with the path below a BASE_DIRS controlling the header’s installed location and matching what consumers will need to #include.

4

OK, thank you !