The gcc bpf port in gcc 14 is in good shape and usable. 
It can build the bpf self tests and pass a large number of these tests.

The project wiki page is here:
https://gcc.gnu.org/wiki/BPFBackEnd

The cross-gcc bpf target (and cross-binutils bpf target) has been added to debian and also gentoo.

Would it be possible to add it to Fedora? No additional gcc patches should be needed, aside from the specfile changes.

Note that this needs cross-binutils 2.42 (I believe, David F. and Jose can correct me) (Will submit a bugzilla for that too).




Reproducible: Always




Something like this patch might be enough (note, untested!):

--- cross-gcc.spec      2024-05-17 14:31:47.699326051 -0600
+++ /home/ezannoni/cross-gcc-orcl/cross-gcc/cross-gcc.spec      2024-05-17 14:16:33.846425873 -0600
@@ -11,6 +11,7 @@
 %global build_arc              %{build_all}
 %global build_avr32            %{build_all}
 %global build_blackfin         %{build_all}
+%global build_bpf              %{build_all}
 %global build_c6x              %{build_all}
 %global build_cris             %{build_all}
 %global build_frv              %{build_all}
@@ -225,6 +233,7 @@
 %do_package arm-linux-gnu      %{build_arm}
 %do_package avr32-linux-gnu    %{build_avr32}
 %do_package bfin-linux-gnu     %{build_blackfin}
+%do_package bpf-unknown-none   %{build_bpf}
 %do_package c6x-linux-gnu      %{build_c6x}
 %do_package cris-linux-gnu     %{build_cris}
 %do_package frv-linux-gnu      %{build_frv}
@@ -318,6 +333,7 @@
     prep_target arm-linux-gnu          %{build_arm}
     prep_target avr32-linux-gnu                %{build_avr32}
     prep_target bfin-linux-gnu         %{build_blackfin}
+    prep_target bpf-unknown-none       %{build_bpf}
     prep_target c6x-linux-gnu          %{build_c6x}
     prep_target cris-linux-gnu         %{build_cris}
     prep_target frv-linux-gnu          %{build_frv}
@@ -739,7 +820,13 @@
        echo '%{_bindir}/'$arch'*-gcc-ar'
        echo '%{_bindir}/'$arch'*-gcc-nm'
        echo '%{_bindir}/'$arch'*-gcc-ranlib'
-       echo '%{_bindir}/'$arch'*-gcov*'
+       case $cpu in
+           bpf*)
+               ;;
+           *)
+               echo '%{_bindir}/'$arch'*-gcov*'
+               ;;
+       esac
        echo '%{_bindir}/'$arch'*-lto-dump'
        echo '%{_mandir}/man1/'$arch'*-cpp*'
        echo '%{_mandir}/man1/'$arch'*-gcc*'
@@ -814,6 +901,7 @@
 %do_files arm-linux-gnu                %{build_arm}
 %do_files avr32-linux-gnu      %{build_avr32}
 %do_files bfin-linux-gnu       %{build_blackfin}
+%do_files bpf-unknown-none     %{build_bpf}
 %do_files c6x-linux-gnu                %{build_c6x}
 %do_files cris-linux-gnu       %{build_cris}
 %do_files frv-linux-gnu                %{build_frv}