Replace LDF deep with native GCC Preprocessor

[ivankravets]

Related links:

• https://scons.org/doc/production/HTML/scons-user.html#idp105548894474704

[italocjs]

Hello, i have seen multiple issues (mentioned here), and the only workaround that worked for me was adding lib_ldf_mode = deep

Is this the best approach for an workaround? Is there any planning to work on this issue?