alr fails on recent version of Fedora

[johnperry-math]

alr seems to fail in multiple ways after I updated from Fedora 35 to Fedora 37. At least some of it seems due to the gcc compiler.

• alr with gtkada gives me the following:

  ⓘ Deploying gtkada=21.0.0...
  -=O=-    #      #      #       #                                                                    
  ⓘ Running post_fetch actions for gtkada=21.0.0...
  checking build system type... x86_64-unknown-linux-gnu
  checking host system type... x86_64-unknown-linux-gnu
  checking target system type... x86_64-unknown-linux-gnu
  checking for gcc... gcc
  checking whether the C compiler works... no
  configure: error: in `/home/cantanima/common/Ada/GtkAdaQuoter/alire/cache/dependencies/gtkada_21.0.0_3c1373c0':
  configure: error: C compiler cannot create executables
  See `config.log' for more details
  

  • I don't see config.log.
  • In any case, the default C compiler (gcc) can create executables. So can clang, also installed.
• Perhaps I need to update alire toolchain? alr search --full --external-detect gnat_ indicates that I have the most recent version
• Perhaps I need to build alire anew? I clone the repository, try alr build, and get this:

  ⓘ Building xml_ez_out/xml_ez_out.gpr...
  Link
     [link]         tmeztf.adb
  /home/cantanima/.config/alire/cache/dependencies/gnat_native_11.2.4_2f37a10b/bin/../lib/gcc/x86_64-pc-linux-gnu/11.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: /lib64/libc.so.6: unknown type [0x13] section `.relr.dyn'
  /home/cantanima/.config/alire/cache/dependencies/gnat_native_11.2.4_2f37a10b/bin/../lib/gcc/x86_64-pc-linux-gnu/11.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: skipping incompatible /lib64/libc.so.6 when searching for /lib64/libc.so.6
  /home/cantanima/.config/alire/cache/dependencies/gnat_native_11.2.4_2f37a10b/bin/../lib/gcc/x86_64-pc-linux-gnu/11.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find /lib64/libc.so.6
  

  ...and a lot more like it.

Not sure where to go from here.