Experimental option to remove oslib at build time.

Cargo.toml

@@ -23,6 +23,8 @@ system-lua54=["rlua-lua54-sys", "rlua-lua54-sys/lua54-pkg-config"]
 system-lua53=["rlua-lua53-sys", "rlua-lua53-sys/lua53-pkg-config"]
 system-lua51=["rlua-lua51-sys", "rlua-lua51-sys/lua51-pkg-config"]
 
+# Remove Lua's os lib
+lua-no-oslib=["rlua-lua54-sys/lua-no-oslib"]
 # Enabled functions from the math module that have been deprecated
 lua-compat-mathlib = []
 
@@ -32,7 +34,7 @@ libc = { version = "0.2" }
 num-traits = { version = "0.2.14" }
 bitflags = { version = "1.0.4" }
 bstr = {version = "0.2", features = ["std"], default_features = false }
-rlua-lua54-sys = { version = "0.1.2", optional = true }
+rlua-lua54-sys = { optional = true, path = "crates/rlua-lua54-sys" }
 rlua-lua53-sys = { version = "0.1.2", optional = true }
 rlua-lua51-sys = { version = "0.1.2", optional = true }
 

crates/rlua-lua54-sys/Cargo.toml

@@ -22,3 +22,4 @@ pkg-config = "0.3.24"
 default = []
 lua54-pkg-config = []
 static = []
+lua-no-oslib = []

crates/rlua-lua54-sys/build.rs

@@ -42,7 +42,6 @@ fn main() {
             .file(lua_dir.join("ldump.c"))
             .file(lua_dir.join("lfunc.c"))
             .file(lua_dir.join("lgc.c"))
-            .file(lua_dir.join("linit.c"))
             .file(lua_dir.join("liolib.c"))
             .file(lua_dir.join("llex.c"))
             .file(lua_dir.join("lmathlib.c"))
@@ -51,7 +50,6 @@ fn main() {
             .file(lua_dir.join("loadlib.c"))
             .file(lua_dir.join("lobject.c"))
             .file(lua_dir.join("lopcodes.c"))
-            .file(lua_dir.join("loslib.c"))
             .file(lua_dir.join("lparser.c"))
             .file(lua_dir.join("lstate.c"))
             .file(lua_dir.join("lstring.c"))
@@ -64,6 +62,12 @@ fn main() {
             .file(lua_dir.join("lvm.c"))
             .file(lua_dir.join("lzio.c"));
 
+        if !cfg!(feature = "lua-no-oslib") {
+            cc_config_build = cc_config_build
+                .file(lua_dir.join("loslib.c"))
+                .file(lua_dir.join("linit.c"));
+        }
+
         cc_config_build
             .out_dir(dst.join("lib"))
             .compile("liblua5.4.a");

src/lua.rs

@@ -782,6 +782,7 @@ unsafe fn load_from_std_lib(state: *mut ffi::lua_State, lua_mod: StdLib) {
     if lua_mod.contains(StdLib::IO) {
         requiref(state, cstr!("io"), Some(ffi::luaopen_io), 1);
     }
+    #[cfg(feature = "lua-no-oslib")]
     if lua_mod.contains(StdLib::OS) {
         requiref(state, cstr!("os"), Some(ffi::luaopen_os), 1);
     }