4 files changed, 38 insertions, 14 deletions
diff --git a/lua/flatbuffers/compat.lua b/lua/flatbuffers/compat.lua
index fbce4578..1296c33f 100644
--- a/lua/flatbuffers/compat.lua
+++ b/lua/flatbuffers/compat.lua
@@ -1,12 +1,15 @@
-local m
-if _VERSION == "Lua 5.3" then
-    m = require("flatbuffers.compat_5_3")
-else
-    local ok = pcall(require, "jit")
-    if not ok then
-        error("Only Lua 5.3 or LuaJIT is supported")
-    else
-        m = require("flatbuffers.compat_luajit")
-    end
-end
-return m
-\ No newline at end of file
+local compats = {
+    ["Lua 5.1"] = function()  
+        -- Check if Lua JIT is installed first
+        local ok = pcall(require, "jit")
+        if not ok then
+            return require("flatbuffers.compat_5_1")
+        else
+            return require("flatbuffers.compat_luajit")
+        end
+    end,
+    ["Lua 5.2"] = function() return require("flatbuffers.compat_5_1") end,
+    ["Lua 5.3"] = function() return require("flatbuffers.compat_5_3") end,
+    ["Lua 5.4"] = function() return require("flatbuffers.compat_5_3") end,
+}
+return assert(compats[_VERSION], "Unsupported Lua Version: ".._VERSION)()
+\ No newline at end of file
diff --git a/lua/flatbuffers/compat_5_1.lua b/lua/flatbuffers/compat_5_1.lua
new file mode 100644
index 00000000..8c5e4321
--- /dev/null
+++ b/lua/flatbuffers/compat_5_1.lua
@@ -0,0 +1,21 @@
+local m = {}
+local ok, bit = pcall(require, "bit32")
+assert(ok, "The Bit32 library must be installed")
+assert(pcall(require, "compat53"), "The Compat 5.3 library must be installed")
+
+m.GetAlignSize = function(k, size)
+    return bit.band(bit.bnot(k) + 1,(size - 1))
+end
+
+if not table.unpack then
+    table.unpack = unpack
+end
+
+if not table.pack then
+    table.pack = pack
+end
+
+m.string_pack = string.pack
+m.string_unpack = string.unpack
+
+return m
diff --git a/tests/LuaTest.sh b/tests/LuaTest.sh
index b6f17b54..d736a6b1 100755
--- a/tests/LuaTest.sh
+++ b/tests/LuaTest.sh
@@ -19,7 +19,7 @@ test_dir="$(pwd)"
 
 ${test_dir}/../flatc --lua -I include_test monster_test.fbs
 
-declare -a versions=(luajit lua5.3)
+declare -a versions=(luajit lua5.1 lua5.2 lua5.3 lua5.4)
 
 for i in "${versions[@]}"
 do
diff --git a/tests/luatest.lua b/tests/luatest.lua
index 952c4fae..7380d7d2 100644
--- a/tests/luatest.lua
+++ b/tests/luatest.lua
@@ -370,4 +370,4 @@ if not result then
     print("Unable to run tests due to test framework error: ",err)
 end
 
-os.exit(result or -1)
+os.exit(result and 0 or -1)