The tools_def.txt was updated and both the -fno-pie and -fno-pic are specified when executing gcc. I don’t have access to the code at the moment but I will post the exact gcc command line as soon as I can.

On Jun 14, 2019, at 3:43 PM, Ard Biesheuvel <ard.biesheuvel@linaro.org> wrote:

On Fri, 14 Jun 2019 at 21:17, Laszlo Ersek <lersek@redhat.com> wrote:

+Ard, +devel

On 06/13/19 17:29, Russell Peterson wrote:

Hello,

We are in the process of upgrading our gcc toolchain to gcc 8.3 (from 7.3). In the process of doing that we have hit an error building edk2:

make[2]: *** [/home/x/RELEASE_GCC5/AARCH64/MdeModulePkg/Universal/Network/DpcDxe/DpcDxe/DEBUG/DpcDxe.efi] Error 1
WriteSections64(): /home/x/RELEASE_GCC5/AARCH64/MdeModulePkg/Universal/Network/DpcDxe/DpcDxe/DEBUG/DpcDxe.dll AARCH64 relative relocations require identical ELF and PE/COFF section offsets

There are multiple errors similar to this issued by GenFw. Our edk2 version is fairly recent (UDK2018 upstream branch as of commit 10318063b) but all this did build fine with gcc 7.3. Any clues?

Your Conf/tools_def.txt is probably stale, and does not contain the
-fno-pie option we added a while ago.