diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
new file mode 100644
index 0000000..eefe8e0
--- /dev/null
+++ b/.github/workflows/macos.yml
@@ -0,0 +1,31 @@
+name: macOS Build
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: macos-latest
+    permissions:
+      contents: write
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        submodules: 'recursive'
+
+    - name: Install premake5
+      run: brew install premake
+
+    - name: Run Premake
+      run: premake5 gmake2
+
+    - name: Build
+      run: make config=release -C .build
+
+    - name: Deploy
+      uses: softprops/action-gh-release@v0.1.7
+      if: startsWith(github.ref, 'refs/tags/v')
+      with:
+        files: .build/bin/Release/ObjEditing
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.gitignore b/.gitignore
index 30bcfa4..9f1bad9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 .build/
+*.o
diff --git a/bin/build.lua b/bin/build.lua
index 5c0616f..7e78c5f 100644
--- a/bin/build.lua
+++ b/bin/build.lua
@@ -129,6 +129,12 @@ local function generateAPI(file, name)
 end
 
 local function main(input, output)
+    if package.config:sub(1, 1) == '\\' then
+        os.execute('if not exist "' .. output:gsub('/', '\\') .. '" mkdir "' .. output:gsub('/', '\\') .. '"')
+    else
+        os.execute('mkdir -p "' .. output .. '"')
+    end
+
     local filePath = input:match('src/lua/(.+)$')
     local fileName = input:match('/([^/]+)$')
     local funcName = generateFuncName(filePath)
diff --git a/init.sh b/init.sh
new file mode 100755
index 0000000..303c562
--- /dev/null
+++ b/init.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+cd "$(dirname "$0")"
+
+if [ -f "bin/premake5" ]; then
+    bin/premake5 gmake2
+else
+    premake5 gmake2
+fi
diff --git a/premake5.lua b/premake5.lua
index 92c69cf..b7899b0 100644
--- a/premake5.lua
+++ b/premake5.lua
@@ -7,18 +7,18 @@ workspace 'ObjEditing'
     configurations { 'Debug', 'Release' }
     location '.build'
     symbols 'Full'
-    architecture 'x86'
     startproject 'ObjEditing'
     flags {
         'MultiProcessorCompile',
-        'Maps',
     }
 
     filter 'system:Windows'
+        architecture 'x86'
         systemversion 'latest'
         characterset 'MBCS'
         staticruntime 'On'
         defines { 'WIN32', '_WINDOWS' }
+        flags { 'Maps' }
     filter 'configurations:Debug'
         defines { '_DEBUG' }
     filter 'configurations:Release'
@@ -70,6 +70,10 @@ project 'ObjEditing'
 
     filter 'system:Windows'
         defines { 'PLATFORM_WINDOWS' }
+    filter 'system:macosx'
+        defines { 'PLATFORM_MACOS' }
+    filter 'system:linux'
+        defines { 'PLATFORM_LINUX' }
 
     filter 'files:**.lua'
         buildmessage 'Compiling %{file.name}'
@@ -136,7 +140,8 @@ do -- for lua
     end
 
     function generateBuildLuaCommand(_ENV)
-        local lua = path.join(cfg.buildtarget.directory, 'Lua.exe')
+        local luaExe = os.target() == 'windows' and 'Lua.exe' or 'Lua'
+        local lua = path.join(cfg.buildtarget.directory, luaExe)
         local script = path.join(_MAIN_SCRIPT_DIR, 'bin/build.lua')
         local out = getGeneratedDir(_ENV)
 
diff --git a/src/objediting.cpp b/src/objediting.cpp
index ee13715..7e43f7a 100644
--- a/src/objediting.cpp
+++ b/src/objediting.cpp
@@ -3,9 +3,9 @@
 #include "luaapi.h"
 #include "luasource.h"
 
-constexpr char* CMDLINE_MAP = "map";
-constexpr char* CMDLINE_OUTPUT = "output";
-constexpr char* CMDLINE_DUMP_TO_SCRIPT = "dump";
+constexpr const char* CMDLINE_MAP = "map";
+constexpr const char* CMDLINE_OUTPUT = "output";
+constexpr const char* CMDLINE_DUMP_TO_SCRIPT = "dump";
 
 static void RegisterTo(lua_State* L, lua_CFunction f, const char* table, const char* name)
 {
diff --git a/src/os_chdir.c b/src/os_chdir.c
index fe8a362..491a2d9 100644
--- a/src/os_chdir.c
+++ b/src/os_chdir.c
@@ -11,6 +11,8 @@
 #if PLATFORM_WINDOWS
 #include "Windows.h"
 #define PATH_MAX 4096
+#else
+#include <unistd.h>
 #endif
 
 int do_chdir(lua_State* L, const char* path)