1 files changed, 6 insertions, 0 deletions
diff --git a/pkgs/development/compilers/ocaml/4.08.nix b/pkgs/development/compilers/ocaml/4.08.nix
index 3c4cf0a712553..9ab19a612671b 100644
--- a/pkgs/development/compilers/ocaml/4.08.nix
+++ b/pkgs/development/compilers/ocaml/4.08.nix
@@ -15,4 +15,10 @@ import ./generic.nix {
     { url = "https://github.com/ocaml/ocaml/commit/17df117b4939486d3285031900587afce5262c8c.patch";
       sha256 = "sha256:1b3jc6sj2k23yvfwrv6nc1f4x2n2biqbhbbp74aqb6iyqyjsq35n"; }
   ];
+
+  # Workaround build failure on -fno-common toolchains like upstream
+  # gcc-10. Otherwise build fails as:
+  #   ld: libcamlrun.a(startup.o):(.bss+0x800): multiple definition of
+  #     `caml_code_fragments_table'; libcamlrun.a(backtrace.o):(.bss+0x20): first defined here
+  NIX_CFLAGS_COMPILE = "-fcommon";
 }