From 76a531e143cb1ad413bd6ba2bc354bb0bbf84542 Mon Sep 17 00:00:00 2001
From: Oscar Dowson <odow@users.noreply.github.com>
Date: Fri, 20 Oct 2023 10:51:44 +1100
Subject: [PATCH] Fix zeroAllClocks usage in earlier versions

---
 src/MOI_wrapper.jl | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/MOI_wrapper.jl b/src/MOI_wrapper.jl
index e6f04a5..89ad94b 100644
--- a/src/MOI_wrapper.jl
+++ b/src/MOI_wrapper.jl
@@ -1810,8 +1810,11 @@ function MOI.optimize!(model::Optimizer)
         )
     end
     _set_variable_primal_start(model)
-    ret = Highs_zeroAllClocks(model)
-    _check_ret(ret)
+    if Highs_versionMajor() == 1 && Highs_versionMinor() >= 6
+        # Not available in earlier versions
+        ret = Highs_zeroAllClocks(model)
+        _check_ret(ret)
+    end
     # if `Highs_run` implicitly uses memory or other resources owned by `model`, preserve it
     GC.@preserve model begin
         # allow Julia to GC while this thread is in `Highs_run`