Commits on Oct 5, 2021

1. build: Fix native_posix build on GNU GCC …

   Update -fno-pie to only be added when relevant. This fixes native_posix
   builds on Debian hosts.
   
   * Debian and other Linux distributions have ld with --warn-textrel as
   default.
   * The option generates a warning when linking on x86.
   * The warning make scripts/twister fail because we treat all warnings
   as error.
   * The warning is issued when no PIE objects are linked against PIE
   library.
   * PIE (Position Independent Executable) or not can be seen with the
   following command.
   * When you want to generate non PIE, link with `-no-pie.`
   
   Non PIE
   
     $ readelf -l build/zephyr/zephyr.elf | grep 'Elf file type is'
     Elf file type is EXEC (Executable file)
   
   PIE
   
     $ readelf -l /lib/x86_64-linux-gnu/libc.so.6 | \
     grep 'Elf file type is'
     Elf file type is DYN (Shared object file)
   
   Issue zephyrproject-rtos#35244
   
   Signed-off-by: Yuval Peress <peress@google.com>

   

   yperess committed Oct 5, 2021
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