ELF Hello World Tutorial / Dynamic linking sections

This program did not have certain dynamic linking related sections because we linked it minimally with ld.

However, if you compile a C hello world with GCC 8.2:

some other interesting sections would appear.

Contains the path to the dynamic loader, i.e. /lib64/ld-linux-x86-64.so.2 in Ubuntu 18.10. Explained at: stackoverflow.com/questions/8040631/checking-if-a-binary-compiled-with-static/55664341#55664341

Contains a lot of different flag masks.

Seems to be a GNU Binutils extension

Determines if an executable is a position independent executable (PIE).

Seems to be informational only, since not used by Linux kernel 5.0 or glibc 2.29.

file 5.36 however does use it to display file type as explained at: stackoverflow.com/questions/34519521/why-does-gcc-create-a-shared-object-instead-of-an-executable-binary-according-to/55704865#55704865