Failure with OCaml 4.00.x and 4.01.x about opam-repository HOT 5 CLOSED

CC: @ocaml/opam-repository

from opam-repository.

Jeremie deleted his old GitHub account - we'll need to point to a cached copy of it.

from opam-repository.

From my .opam cache (md5 faccda3b3ab092fa9ac7d5d4d8beb004)

diff --git a/configure b/configure
index d45e88f70fc..25d872b60d8 100755
--- a/configure
+++ b/configure
@@ -322,7 +322,14 @@ case "$bytecc,$target" in
     bytecccompopts="-fno-defer-pop $gcc_warnings -DSHRINKED_GNUC"
     mathlib="";;
   *,*-*-darwin*)
-    bytecccompopts="-fno-defer-pop $gcc_warnings"
+    # On recent version of OSX, gcc is a symlink to clang
+    if $bytecc --version | grep -q clang; then
+        # -fno-defer-pop is not supported by clang, and make recent
+        # versions of clang to fail
+        bytecccompopts="$gcc_warnings"
+    else
+        bytecccompopts="-fno-defer-pop $gcc_warnings"
+    fi
     mathlib=""
     mkexe="$mkexe -Wl,-no_compact_unwind"
     # Tell gcc that we can use 32-bit code addresses for threaded code

from opam-repository.

This should now be fixed.

Moreover, setup-ocaml doesn't work with older versions of OCaml (<= 3.12), but this is not new as far as I can tell.

* With 3.07, it fails with the message `Error: No OCaml base compiler packages matched the version 3.07 in the opam-repository.`, whereas `opam switch create 3.07` should work as expected (https://github.com/thierry-martinez/stdcompat/runs/7952973003?check_suite_focus=true).

* With OCaml 3.08 to 3.12, it seems to fail because it tries to install `opam-depext` which requires OCaml >= 4.00.

I think these should be fixed in setup-ocaml. Could you open a new issue there for that?

from opam-repository.

Thank you very much for the quick fix! I reposted in setup-ocaml the part of the issue relative to OCaml ≤ 3.12 (ocaml/setup-ocaml#615).

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