Incosistent #include paths of ifort and ifx

[V-T]

Consider the following directory tree:

test.F90
b.inc
test/
├─ a.inc
└─ b.inc

With the following contents:

• `test.F90`:

#include "test/a.inc"
end

• `test/a.inc`:

#include "test/b.inc"
#include "b.inc"
#include "b.inc"

• `test/b.inc`:

print*,"Hello from test/b.inc"

• `b.inc`:

print*,"Hello from b.inc"

A similar example was already discussed here. Running the compiled code with the Intel compiler (ifort 2021.8.0 and ifx 2023.0.0 on Ubuntu 18.04.2 LTS) without any flags leads to the following output:

 Hello from test/b.inc
 Hello from test/b.inc
 Hello from test/b.inc

After the first `#include "test/b.inc"` in `a.inc` the directory is "changed" to `test` for some reason and only `test/b.inc` is included in all consequent `#include` statements.

Is it the intended behavior of the preprocessor? Or is it a bug?

[V-T]

@Barbara_P_Intel, it works now as intended, thank you!