build lua on Windows

Author: marler8997

build.zig

@@ -365,6 +365,12 @@ fn addLua(
     lua_exe.addIncludePath("inc" ++ std.fs.path.sep_str ++ "libc");
     lua_exe.linkLibrary(libc_only_std_static);
     lua_exe.linkLibrary(zig_start);
+    // TODO: should libc_only_std_static and zig_start be able to add library dependencies?
+    if (target.getOs().tag == .windows) {
+        lua_exe.addIncludePath("inc/win32");
+        lua_exe.linkSystemLibrary("ntdll");
+        lua_exe.linkSystemLibrary("kernel32");
+    }
 
     const step = b.step("lua", "build the LUA interpreter");
     step.dependOn(&lua_exe.install_step.?.step);

inc/libc/stdio.h

@@ -100,5 +100,8 @@ void perror(const char *s);
     #define FOPEN_MAX 999
 #endif
 
+#ifdef _WIN32
+    FILE *_popen(const char *command, const char *mode);
+#endif
 
 #endif /* _STDIO_H */

inc/win32/basetcsd.h

@@ -0,0 +1,6 @@
+#ifndef _BASETSD_H
+#define _BASETSD_H
+
+#include "private/types.h"
+
+#endif /* _BASETSD_H */

inc/win32/errhandlingapi.h

@@ -0,0 +1,7 @@
+#ifndef _ERRHANDLINGAPI_H
+#define _ERRHANDLINGAPI_H
+
+#include "private/types.h"
+DWORD GetLastError();
+
+#endif /* _ERRHANDLINGAPI_H */

inc/win32/io.h

@@ -0,0 +1,7 @@
+#ifndef _IO_H
+#define _IO_H
+
+// NOTE: I'm not sure if Windows even provides this header but
+//       lua wants it if compiling for windows I guess?
+
+#endif /* _IO_H */

inc/win32/libloaderapi.h

@@ -0,0 +1,8 @@
+#ifndef _LIBLOADERAPI_H
+#define _LIBLOADERAPI_H
+
+HMODULE LoadLibraryExA(LPCSTR lpLibFileName, HANDLE hFile, DWORD dwFlags);
+BOOL FreeLibrary(HMODULE hLibModule);
+DWORD GetModuleFileNameA(HMODULE hModule, LPSTR lpFilename, DWORD nSize);
+
+#endif /* _LIBLOADERAPI_H */

inc/win32/private/types.h

@@ -0,0 +1,24 @@
+#ifndef _WIN32_PRIVATE_TYPES_H
+#define _WIN32_PRIVATE_TYPES_H
+
+#include "../../libc/private/int32_t.h"
+
+#define _nullterminated
+
+typedef int BOOL;
+typedef void *PVOID;
+typedef const void *LPCVOID;
+typedef int32_t DWORD;
+typedef char CHAR;
+typedef CHAR *LPSTR;
+typedef _nullterminated const char *LPCSTR;
+typedef void *HMODULE;
+typedef PVOID HANDLE;
+
+#ifdef UNICODE
+    typedef LPWSTR LPTSTR;
+#else
+    typedef LPSTR LPTSTR;
+#endif
+
+#endif /* _WIN32_PRIVATE_TYPES_H */

inc/win32/winbase.h

@@ -0,0 +1,21 @@
+#ifndef _WINBASE_H
+#define _WINBASE_H
+
+DWORD FormatMessageA(
+    DWORD   dwFlags,
+    LPCVOID lpSource,
+    DWORD   dwMessageId,
+    DWORD   dwLanguageId,
+    LPTSTR  lpBuffer,
+    DWORD   nSize,
+    va_list *Arguments);
+
+#define FORMAT_MESSAGE_ALLOCATE_BUFFER 0x00000100
+#define FORMAT_MESSAGE_ARGUMENT_ARRAY 0x00002000
+#define FORMAT_MESSAGE_FROM_HMODULE 0x00000800
+#define FORMAT_MESSAGE_FROM_STRING 0x00000400
+#define FORMAT_MESSAGE_FROM_SYSTEM 0x00001000
+#define FORMAT_MESSAGE_IGNORE_INSERTS 0x00000200
+#define FORMAT_MESSAGE_FROM_SYSTEM 0x00001000
+
+#endif /* _WINBASE_H */

inc/win32/windef.h

@@ -0,0 +1,6 @@
+#ifndef _WINDEF_H
+#define _WINDEF_H
+
+#include "private/types.h"
+
+#endif /* _WINDEF_H */

inc/win32/windows.h

@@ -0,0 +1,12 @@
+#ifndef _WINDOWS_H
+#define _WINDOWS_H
+
+#include "private/types.h"
+
+#include "winbase.h"
+#include "errhandlingapi.h"
+#include "libloaderapi.h"
+
+#define MAX_PATH 260
+
+#endif /* _WINDOWS_H */