flambda does not compile on arm64 with OCaml < 4.06

[kit-ty-kate]

#9 377.8 # ../../boot/ocamlrun ../../ocamlopt -nostdlib -I ../../stdlib -shared -o unix.cmxs -I . unix.cmxa
#9 377.8 # /usr/bin/ld: unix.a(unix.o): relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `camlUnix__Pmakeblock_3569' which may bind externally can not be used when making a shared object; recompile with -fPIC
#9 377.8 # unix.a(unix.o): in function `camlUnix__anon$2dfn$5b$2fhome$2fopam$2f$2eopam$2f4$2e05$2f$2eopam$2dswitch$2fbuild$2focaml$2dvariants$2e4$2e05$2e0$2bflambda$2fotherlibs$2funix$2funix$2eml$3a96$2c4$2d$2d2598$5d_511':
#9 377.8 # /home/opam/.opam/4.05/.opam-switch/build/ocaml-variants.4.05.0+flambda/otherlibs/unix/unix.ml:96:(.text+0x110): dangerous relocation: unsupported relocation
#9 377.8 # /usr/bin/ld: unix.a(unix.o): relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `camlUnix__const_block_529' which may bind externally can not be used when making a shared object; recompile with -fPIC
#9 377.8 # /home/opam/.opam/4.05/.opam-switch/build/ocaml-variants.4.05.0+flambda/otherlibs/unix/unix.ml:167:(.text+0x154): dangerous relocation: unsupported relocation
#9 377.8 # /usr/bin/ld: unix.a(unix.o): relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `camlUnix__const_block_686' which may bind externally can not be used when making a shared object; recompile with -fPIC
#9 377.8 # /home/opam/.opam/4.05/.opam-switch/build/ocaml-variants.4.05.0+flambda/otherlibs/unix/unix.ml:97:(.text+0x190): dangerous relocation: unsupported relocation
#9 377.8 # /usr/bin/ld: unix.a(unix.o): relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `camlUnix__Pmakeblock_3569' which may bind externally can not be used when making a shared object; recompile with -fPIC

[dra27]

This should be fixable when ocaml/ocaml#11821 is merged (to and to 4.03 and 4.04) and then a glibc-style patch to opam-repository referencing the patch for those compiler packages (which I'll sort out shortly).

[MisterDA]

So this has been fixed upstream and the PR can now be closed?

[dra27]

These should build again with ocaml/opam-repository#22825, yes.