diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..fcf03b4
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+**/*.o
+**/*.a
+**/*.lds
+**/*.h
+zig-out/
+zig-cache/
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..e69de29
diff --git a/build-cosmo.sh b/build-cosmo.sh
new file mode 100755
index 0000000..50d2c11
--- /dev/null
+++ b/build-cosmo.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+zig build-obj ./src/main.zig -fno-PIE -fno-PIC -fno-stack-check
+ld.bfd main.o -o zig-out/bin/nmvm.com.dbg -T extern/cosmopolitan/ape.lds extern/cosmopolitan/crt.o extern/cosmopolitan/ape-copy-self.o \
+    extern/cosmopolitan/cosmopolitan.a -z common-page-size=0x1000 -z max-page-size=0x1000 --gc-sections
diff --git a/extern/cosmopolitan/get.sh b/extern/cosmopolitan/get.sh
new file mode 100755
index 0000000..dc4ee9a
--- /dev/null
+++ b/extern/cosmopolitan/get.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+wget wget https://justine.lol/cosmopolitan/cosmopolitan.tar.gz
+unzip cosmopolitan.tar.gz
diff --git a/extern/get.sh b/extern/get.sh
new file mode 100755
index 0000000..055cca6
--- /dev/null
+++ b/extern/get.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+cd ./cosmopolitan
+./get.sh
diff --git a/prepare.sh b/prepare.sh
new file mode 100755
index 0000000..a750c45
--- /dev/null
+++ b/prepare.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+cd ./extern
+./get.sh
+
+cd ../
+zig translate-c ./extern/cosmopolitan/cosmopolitan.h > ./src/cosmopolitan/cosmopolitan.zig
diff --git a/src/cosmopolitan/.getkeep b/src/cosmopolitan/.getkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/main.zig b/src/main.zig
index 2443fee..2032434 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -1,20 +1,29 @@
-const std = @import("std");
 const tolmac = @import("tolmac.zig");
+const cosmo = @import("cosmopolitan/cosmopolitan.zig");
 
 fn printInt3(int: u64, other: u32, another: u16) callconv(.SysV) void {
     @setAlignStack(16);
-    std.debug.print("test: {}, {}, {}\n", .{ int, other, another });
+    _ = cosmo.printf("%u\n", @as(c_uint, @intCast(int + other + another)));
 }
 
 fn printInt2(int: u64, other: u8) callconv(.SysV) void {
     @setAlignStack(16);
-    std.debug.print("test: {}, {}\n", .{ int, other });
+    _ = cosmo.printf("%u\n", @as(c_uint, @intCast(int + other)));
 }
 
 const opPrintInt3Zov = tolmac.generateOpZovSysvFromPrototype(printInt3) catch unreachable;
 const opPrintInt2Zov = tolmac.generateOpZovSysvFromPrototype(printInt2) catch unreachable;
 
-pub fn main() !void {
+comptime {
+    @export(cosmopolitanMain, .{ .name = "main" });
+}
+
+// todo: No cosmopolitan main.
+
+fn cosmopolitanMain(argc: c_int, argv: [*][*:0]u8) callconv(.SysV) c_int {
+    _ = argc;
+    _ = argv;
+
     const add = [_]tolmac.Word{
         @as(tolmac.Word, @intFromPtr(&tolmac.opSumWordsWithOverflow)),
         @as(tolmac.Word, @intFromPtr(&tolmac.opReturn)),
@@ -43,6 +52,8 @@ pub fn main() !void {
     };
 
     tolmac.execute(&entry, 0);
+
+    return 0;
 }
 
 test {