(rule
 (target byterun.exe)
 (deps
  (:main byterun.c)
  (:runtime ../runtime/runtime.a)
  mac-specific-flags.txt)
 (mode
  (promote (until-clean)))
 (action
  (run
   gcc
   %{read-lines:mac-specific-flags.txt}
   -g
   %{main}
   %{runtime}
   -o
   %{target})))

(rule
 (target mac-specific-flags.txt)
 (enabled_if
  (= %{system} "linux"))
 (action
  (write-file %{target} "")))

(rule
 (target mac-specific-flags.txt)
 (enabled_if
  (= %{ocaml-config:system} macosx))
 (action
  (write-file %{target} "-arch\nx86_64\n-ld_classic")))