diff --git a/src/PikaPlatform.c b/src/PikaPlatform.c
index f64a980c0..b328d83d3 100644
--- a/src/PikaPlatform.c
+++ b/src/PikaPlatform.c
@@ -28,7 +28,7 @@
 #include "PikaPlatform.h"
 #include <stdio.h>
 #include <stdlib.h>
-#ifdef WIN32
+#if defined(_WIN32) && !defined(CROSS_BUILD)
 #include <Windows.h>
 #endif
 
@@ -307,7 +307,7 @@ PIKA_WEAK void pika_platform_thread_delay(void) {
 PIKA_WEAK void pika_platform_sleep_ms(uint32_t ms) {
 #if defined(__linux)
     usleep(ms * 1000);
-#elif defined(_WIN32)
+#elif defined(_WIN32) && !defined(CROSS_BUILD)
     Sleep(ms);
 #else
     pika_platform_printf(
diff --git a/tools/pikaByteCodeGen/CMakeLists.txt b/tools/pikaByteCodeGen/CMakeLists.txt
index 23e680c10..0ac9c6d56 100644
--- a/tools/pikaByteCodeGen/CMakeLists.txt
+++ b/tools/pikaByteCodeGen/CMakeLists.txt
@@ -3,7 +3,10 @@ project(pikaByteCodeGen VERSION 0.1.0)
 
 include(CTest)
 enable_testing()
-ADD_DEFINITIONS(-DPIKA_CONFIG_ENABLE)
+ADD_DEFINITIONS(
+        -DPIKA_CONFIG_ENABLE
+        -DCROSS_BUILD
+)
 aux_source_directory(pikascript/pikascript-core pikascript-core)
 aux_source_directory(pikascript/pikascript-lib/PikaStdLib PikaStdLib)
 aux_source_directory(pikascript/pikascript-api pikascript-api)
diff --git a/tools/pikaCompiler/rust-msc-latest-win10.exe b/tools/pikaCompiler/rust-msc-latest-win10.exe
index dcf80a4a0..36d036a42 100644
Binary files a/tools/pikaCompiler/rust-msc-latest-win10.exe and b/tools/pikaCompiler/rust-msc-latest-win10.exe differ